Quenching Char With An Inert Material Patents (Class 201/39)
  • Patent number: 11220644
    Abstract: Disclosed is a method for reducing the tar content in pyrolysis gas generated in a pyrolysis reactor (1). The method comprises the steps of: guiding the pyrolysis gas through a filter (2) to remove at least 90% of all the particles in the pyrolysis gas having a particle size down to 7? and preferably down to 4? from the pyrolysis gas, partially oxidizing the pyrolysis gas in a partial oxidation reactor (3) to remove tar from the pyrolysis gas, and guiding the pyrolysis gas through a coke bed (4) to further remove tar from the pyrolysis gas. Furthermore, a two-stage gasifier (6) is disclosed.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: January 11, 2022
    Assignee: Danmarks Tekniske Universitet
    Inventors: Ulrik Birk Henriksen, Jesper Ahrenfeldt
  • Patent number: 10927303
    Abstract: The present technology describes methods and systems for an improved quench tower. Some embodiments improve the quench tower's ability to recover particulate matter, steam, and emissions that escape from the base of the quench tower. Some embodiments improve the draft and draft distribution of the quench tower. Some embodiments include one or more sheds to enlarge the physical or effective perimeter of the quench tower to reduce the amount of particulate matter, emissions, and steam loss during the quenching process. Some embodiments include an improved quench baffle formed of a plurality of single-turn or multi-turn chevrons adapted to prevent particulate matter from escaping the quench tower. Some embodiments include an improved quench baffle spray nozzle used to wet the baffles, suppress dust, and/or clean baffles. Some embodiments include a quench nozzle that can fire in discrete stages during the quenching process.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: February 23, 2021
    Assignee: SUNCOKE TECHNOLOGY AND DEVELOPMENT LLC
    Inventors: Chun Wai Choi, Rajat Kapoor, John Francis Quanci
  • Patent number: 9862888
    Abstract: The present technology is generally directed to systems and methods for improving quenched coke recovery. More specifically, some embodiments are directed to systems and methods utilizing one or more of a screen, barrier, or reflector panel to contain or redirect coke during or after quenching. In a particular embodiment, a quench car system for containing coke includes a quench car having a base, a plurality of sidewalls, and a top portion. The system can further include a permeable barrier covering at least a portion of the top of the quench car, wherein the permeable barrier has a plurality of apertures therethrough.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: January 9, 2018
    Assignee: SUNCOKE TECHNOLOGY AND DEVELOPMENT LLC
    Inventors: John Francis Quanci, Bradley Thomas Rodgers, Khambath Vichitvongsa, Chun Wai Choi, Matt William Gill
  • Patent number: 9321965
    Abstract: A method and apparatus for quenching metallurgical coke made in a coking oven. The method includes pushing a unitary slab of incandescent coke onto a substantially planar receiving surface of an enclosed quenching car so that substantially all of the coke from the coking oven is pushed as a unitary slab onto the receiving surface of the quenching car. The slab of incandescent coke is quenched in an enclosed environment within the quenching car with a plurality of water quench nozzles while submerging at least a portion of the slab of incandescent coke by raising a water level in the quenching car. Subsequent to quenching the coke, the planar receiving surface is tilted to an angle sufficient to slide the quenched coke off of the planar receiving surface and onto a product collection conveyer and sufficient to drain water from the quenched coke.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: April 26, 2016
    Assignee: SunCoke Technology and Development LLC.
    Inventor: Michael P. Barkdoll
  • Patent number: 9235820
    Abstract: Systems for analyzing a benefit or detriment of (1) changing an operational condition or parameter, or (2) adding a coke drum to an existing coking system are disclosed. Contemplated systems can increase the cost effectiveness of coking systems by providing valuable analysis data.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: January 12, 2016
    Assignee: Fluor Technologies Corporation
    Inventors: Leslie P. Antalffy, Kenneth D. Kirkpatrick, George Miller, Barry Millet, Charles Maitland
  • Publication number: 20150122629
    Abstract: A wet quenching tower for quenching hot coke, including a quenching chamber, having a quenching spray device above the quenching chamber for dispensing quenching water, having a flue placed on the quenching chamber, and having at least one separating device which is arranged horizontally or at a slanted angle relative to the vertical, which can be vertically permeated, and which has a plurality of lamellae. Each of the lamellae has a non-branching cross-section, flow paths being formed between each two adjacent lamellae. The flow paths formed between each two lamellae change direction multiple times and correspondingly have a serpentine shape. A method for quenching coke using the aforementioned wet quenching tower is also disclosed.
    Type: Application
    Filed: July 19, 2012
    Publication date: May 7, 2015
    Applicant: THYSSENKRUPP INDUSTRIAL SOLUTIONS GMBH
    Inventors: Bodo Freimuth, Klaus Freimuth, Sabine Stebel
  • Patent number: 8869425
    Abstract: An apparatus (100) for processing waste material is provided which comprises a heat proof chamber (102), a hot gas inlet (106, 112) for heating the interior of the heat proof chamber (102), and a rotatable drum (118) for containing waste to be processed. The drum (118) has gaps (120) therein, is located within the heat proof chamber (102), and separated therefrom around its edge by a gap. The apparatus (100) is also provided with a drive (126, 128) for rotating the drum (118) at a speed such that, in use, waste material that is heat softened is centrifugally separated from the remainder of the waste and passes through the gaps (120) in the drum (118).
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: October 28, 2014
    Assignee: Chinook End-Stage Recycling Limited
    Inventors: Ophneil Henry Perry, Rifat Al Chalabi
  • Publication number: 20140311885
    Abstract: Processes for quenching coke in a coke drum of a delayed coker unit that more thoroughly cool the coke, eliminate hot spots in the coke bed, and remove residual hydrocarbons from the coke prior to venting the coke drum may comprise a ramp quench phase and a pressure quench phase after the ramp quench phase. During the ramp quench phase, the coke drum internal pressure may rise to a maximum pressure level and then fall to a transitional pressure level. At least one control valve may be actuated at the transitional pressure level to increase the coke drum internal pressure from the transitional pressure level to a pulsed pressure level of the pressure quench phase.
    Type: Application
    Filed: April 23, 2013
    Publication date: October 23, 2014
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Dale William Wilborn, Eileen Imelda Love, Mark Anthony Alvarado
  • Publication number: 20140251784
    Abstract: A process for dry cooling of coke with carbon dioxide with subsequent use of the carbon monoxide produced, in which the coal is cyclically converted to coke and the coke, after the coking oven has been unloaded, is introduced into a cooling apparatus, and carbon dioxide is introduced in the cooling apparatus for dry cooling, such that a Boudouard reaction gives rise to carbon monoxide, and the carbon monoxide produced is used to heat the coking oven. The process allows utilization of the heat which arises in the course of coking for production of carbon monoxide, which in turn is used in the heating, such that a very balanced heat budget of the overall process can be achieved overall.
    Type: Application
    Filed: September 21, 2012
    Publication date: September 11, 2014
    Applicant: THYSSENKRUP INDUSTRIAL SOLUTIONS AG
    Inventor: Holger Thielert
  • Publication number: 20140110240
    Abstract: This invention provides processes and systems for converting biomass into high-carbon biogenic reagents that are suitable for a variety of commercial applications. Some embodiments employ pyrolysis in the presence of an inert gas to generate hot pyrolyzed solids, condensable vapors, and non-condensable gases, followed by separation of vapors and gases, and cooling of the hot pyrolyzed solids in the presence of the inert gas. Additives may be introduced during processing or combined with the reagent, or both. The biogenic reagent may include at least 70 wt %, 80 wt %, 90 wt %, 95 wt %, or more total carbon on a dry basis. The biogenic reagent may have an energy content of at least 12,000 Btu/lb, 13,000 Btu/lb, 14,000 Btu/lb, or 14,500 Btu/lb on a dry basis. The biogenic reagent may be formed into fine powders, or structural objects. The structural objects may have a structure and/or strength that derive from the feedstock, heat rate, and additives.
    Type: Application
    Filed: April 13, 2012
    Publication date: April 24, 2014
    Applicant: BIOGENIC REAGENTS LLC
    Inventors: James A. Mennell, Daniel J. Despen
  • Publication number: 20130306462
    Abstract: A method and a device for breaking up a fresh and hot coke charge in a receiving trough having mobile plate segments, the coke charge being conveyed to a quenching tower in the receiving trough of a flatbed transport car in which the coke charge is cooled down to ambient temperatures by mobile plate segments so that the coke structure is broken up and crevice-type cavities are formed in the compacted coke charge. These crevice-type cavities then allow an increased amount of water to flow into the interior of the coke charge during the subsequent quenching step, resulting in a high profitability of the method, a higher coke quality and a reduced burden on the environment due to reduced quenching times and lower water consumption. A device for carrying out the method is also disclosed.
    Type: Application
    Filed: December 8, 2011
    Publication date: November 21, 2013
    Applicant: THYSSENKRUPP UHDE GMBH
    Inventors: Ronald Kim, Franz-Josef Schuecker
  • Patent number: 8236142
    Abstract: A method and apparatus for transporting and quenching coke, useful in quenching a batch of coke produced in one of a plurality of coke ovens forming a coke oven battery, is disclosed. A hot car defining a substantially planar receiving surface is positioned adjacent a coke oven of the coke oven battery, and a unitary cake of unquenched coke is placed onto the hot car receiving surface. The hot car and unquenched coke are transported to a transfer station having a dust collection system. A quenching car is positioned at the transfer station adjacent the hot car, under the dust collection system. The unitary cake of unquenched coke is dumped into the quenching car receptacle, thereby separating the unitary cake. At least a portion of the dust generated by separation is collected. The quench car is then transported to a quenching station, where the separated coke is quenched.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: August 7, 2012
    Assignee: Westbrook Thermal Technology, LLC
    Inventor: Richard Westbrook
  • Patent number: 8152970
    Abstract: A method and apparatus for quenching metallurgical coke made in a coking oven. The method includes pushing a unitary slab of hot coke onto a substantially planar receiving surface of a hot car. The hot car containing the coke is then transported to a quench car station. The unitary slab of hot coke is pushed onto a substantially planar receiving surface of a quench car at the quench car station. Quenching of the slab of hot coke is conducted in the quench car with a predetermine amount of water. After quenching, the quenched coke is dumped onto a receiving pad for collection thereof.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: April 10, 2012
    Assignee: SunCoke Technology and Development LLC
    Inventors: Michael P. Barkdoll, Donald M. Watkins, Richard C. Retort, Richard W. Westbrook, Jerome A. Karnowski, Mark A. Ball
  • Publication number: 20120024688
    Abstract: A method and apparatus for quenching metallurgical coke made in a coking oven. The method includes pushing a unitary slab of incandescent coke onto a substantially planar receiving surface of an enclosed quenching car so that substantially all of the coke from the coking oven is pushed as a unitary slab onto the receiving surface of the quenching car. The slab of incandescent coke is quenched in an enclosed environment within the quenching car with a plurality of water quench nozzles while submerging at least a portion of the slab of incandescent coke by raising a water level in the quenching car. Subsequent to quenching the coke, the planar receiving surface is tilted to an angle sufficient to slide the quenched coke off of the planar receiving surface and onto a product collection conveyer and sufficient to drain water from the quenched coke.
    Type: Application
    Filed: August 9, 2011
    Publication date: February 2, 2012
    Applicant: SUNCOKE TECHNOLOGY AND DEVELOPMENT CORP.
    Inventor: Michael P. BARKDOLL
  • Patent number: 8057641
    Abstract: A method and apparatus for effective pyrolysis of a biomass utilizing rapid heat transfer from a solid heat carrier or catalyst. Particularly, various embodiments of the present invention provide methods and apparatuses which incorporate progressive temperature quenching and rapid disengagement of the heat carrier material and reaction product.
    Type: Grant
    Filed: July 19, 2010
    Date of Patent: November 15, 2011
    Assignee: Kior Inc.
    Inventors: Robert Bartek, Ronald Lee Cordle
  • Patent number: 7998316
    Abstract: A method and apparatus for quenching metallurgical coke made in a coking oven. The method includes pushing a unitary slab of incandescent coke onto a substantially planar receiving surface of an enclosed quenching car so that substantially all of the coke from the coking oven is pushed as a unitary slab onto the receiving surface of the quenching car. The slab of incandescent coke is quenched in an enclosed environment within the quenching car with a plurality of water quench nozzles while submerging at least a portion of the slab of incandescent coke by raising a water level in the quenching car. Subsequent to quenching the coke, the planar receiving surface is tilted to an angle sufficient to slide the quenched coke off of the planar receiving surface and onto a product collection conveyer and sufficient to drain water from the quenched coke.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: August 16, 2011
    Assignee: Suncoke Technology and Development Corp.
    Inventor: Michael P. Barkdoll
  • Patent number: 7785447
    Abstract: Closed apparatus and processes by which carbon feedstock is composed of a mixture of non-coking coal fines and another carbonaceous material, such as waste coke fines, are described. The coal and coke fines are mixed together and may be formed into solid pieces. The mixture alone or as solid pieces is fired through pyrolyzation into solid pieces of coke, with solid and gaseous by-products of pyrolyzation being recycled for use within the coke-producing closed system, thereby reducing or eliminating release of undesirable substances to the environment. A char-forming binder may or may not be added to the carbon mixture prior to pyrolyzation.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: August 31, 2010
    Assignee: Combustion Resources, LLC
    Inventors: Craig N. Eatough, Jon S. Heaton, Steven R. Eatough
  • Publication number: 20090139851
    Abstract: The present invent provides improved rapid thermal conversion processes for efficiently converting wood, other biomass materials, and other carbonaceous feedstock (including hydrocarbons) into high yields of valuable liquid product, e.g., bio-oil, on a large scale production. In an embodiment, biomass material, e.g., wood, is feed to a conversion system where the biomass material is mixed with an upward stream of hot heat carriers, e.g., sand, that thermally convert the biomass into a hot vapor stream. The hot vapor stream is rapidly quenched with quench media in one or more condensing chambers located downstream of the conversion system. The rapid quenching condenses the vapor stream into liquid product, which is collected from the condensing chambers as a valuable liquid product. In one embodiment, the liquid product itself is used as the quench media.
    Type: Application
    Filed: November 20, 2007
    Publication date: June 4, 2009
    Inventor: Barry Freel
  • Patent number: 6264797
    Abstract: A method is provided for cooling coke drum deheading devices, thereby extending the life of same. The method calls for spraying water or other coolant on the devices when they are in operation.
    Type: Grant
    Filed: September 1, 1999
    Date of Patent: July 24, 2001
    Assignee: Hahn & Clay
    Inventors: Charles Schroeder, Jinyang James Lu
  • Patent number: 6193837
    Abstract: A process for producing a brightness stabilization mixture of water-soluble organic compounds from biomass pyrolysis oils comprising: a) size-reducing biomass material and pyrolyzing the size-reduced biomass material in a fluidized bed reactor; b) separating a char/ash component while maintaining char-pot temperatures to avoid condensation of pyrolysis vapors; c) condensing pyrolysis gases and vapors, and recovering pyrolysis oils by mixing the oils with acetone to obtain an oil-acetone mixture; d) evaporating acetone and recovering pyrolysis oils; e) extracting the pyrolysis oils with water to obtain a water extract; f) slurrying the water extract with carbon while stirring, and filtering the slurry to obtain a colorless filtrate; g) cooling the solution and stabilizing the solution against thermally-induced gelling and solidification by extraction with ethyl acetate to form an aqueous phase lower layer and an organic phase upper layer; h) discarding the upper organic layer and extracting the aqueous
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: February 27, 2001
    Assignee: Midwest Research Institute
    Inventors: Foster A. Agblevor, Serpil Besler-Guran
  • Patent number: 6143137
    Abstract: A rotary drum cooler for cooling particulate material (e.g. coke particles) having at least one cooling pocket which, in turn, includes a flexible vent pipe assembly which can slide in relation to the shell of the cooler. By making the vent pipe slidable, it can move in response to the expansion and contraction of the pocket within the shell. The vent pipe assembly is comprised of (a) a tube which is connected to the pocket and which slidably extends through an aperture in the shell and (b) a flexible means for sealingly connecting the outer end of the tube to the shell.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: November 7, 2000
    Assignee: Atlantic Richfield Company
    Inventors: Ralph Gerstenkorn, Robert William Biederstadt, Jack Richard Highlander, Jr., John William Daly
  • Patent number: 6077399
    Abstract: The present invention deals with a method to produce uniform quality coke for a blast furnace by quenching coke at a pre-determined rate to produce coke with essentially uniform moisture; further, this invention possesses specific features to produce coke of uniform stability (strength) by equilibrating the temperature of the coke prior to its being quenched. Uniform moisture and uniform stability are very important factors that contribute to the efficient operation of the blast furnace to result in lowering the cost of making a ton of iron. This method is carried out under pressure, in a closed system, and in an environmentally acceptable manner with minimum formation of CO.sub.2. Further, the method possesses additional features which lead to the production of coke of higher stability than obtained conventionally.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: June 20, 2000
    Assignee: Calderon Energy Company of Bowling Green, Inc.
    Inventors: Albert Calderon, Terry James Laubis
  • Patent number: 5968320
    Abstract: A system for transporting and burning under negative pressure in a boiler a raw coke oven gas to produce steam energy. The system has the usual battery of coke ovens and corresponding ascension pipes connected to a collector main. Flushing liquor is sprayed into the hot coke oven gases to effect cooling in the collector main. A transport main delivers the cooled raw coke oven gases and flushing liquor to a burner of a steam producing boiler where the transport main includes a downcomer for separating the raw coke oven gas from the flushing liquor. The coke oven gas is burned in the boiler where a suction fan is provided at the exhaust of the boiler to develop a negative pressure in the system where the boiler has reinforced walls to withstand the negative pressure. A change in negative pressure in the system is detected and monitored by a controller system which varies draw of the suction fan in response to a detected change in negative pressure in the system.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: October 19, 1999
    Assignee: Stelco, Inc.
    Inventor: Hugh H. Sprague
  • Patent number: 5932089
    Abstract: A method is provided for cooling prior to decoking a petroleum coke drum having a substantially solidified mass of petroleum coke by initiating the injection of water into the coke drum while the average temperature of the coke within the coke drum is greater than about 500.degree. F., wherein the average flow rate of water injected into the coke drum over the initial 10 minute period of water injection is from about 0.0033 to about 0.01 gpm per cubic foot of coke in the coke drum; and thereafter continuing the injection of water into the drum for a total injection time of at least about 60 minutes, at a flow rate during the 50 minute period immediately following the initial 10 minute period less than about 0.0036 to about 0.011 gpm per cubic foot of coke in the coke drum.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: August 3, 1999
    Assignee: Atlantic Richfield Company
    Inventor: David E. Moore
  • Patent number: 5827403
    Abstract: A method of manufacturing a delayed coker drum as used in a refining process to receive coke feedstock as a hot liquid and in which the coke feedstock is cooled and quenched to produce solid coke, the hot liquid causing the drum to initially expand circumferentially and laterally and upon quenching to shrink due to thermal contraction, the circumferential shrinking serving to crush solidified coke and the lateral shrinking causing interface frictional contact between the solidified coke and the vessel sidewall that must be overcome, inducing high level stresses in the drum, including the steps of selecting a plurality of metal plates configured for assembling the drum, and welding the plates together creating welded seams and in which the metal plates are selected to have metallurgical characteristics and thicknesses such that their elastic limits exceed the stress introduced in the plates during the quenching process and employing welding materials and techniques such that the elastic limits of the welded se
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: October 27, 1998
    Assignee: Citgo Petroleum Corporation
    Inventors: Richard S. Boswell, Thomas D. Farraro
  • Patent number: 5804038
    Abstract: The metal stresses in a delayed coke drum are reduced by externally cooling the coke drum near the junction of the drum shell and the supporting skirt thereof during the quench step. This reduces the metal stresses at the area around the welds of the drum skirt.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: September 8, 1998
    Assignee: Conoco Inc.
    Inventor: David K. Nelsen
  • Patent number: 5795445
    Abstract: A method of controlling the rate of quench of coke in a coke drum to reduce deterioration of the coke drum sidewall in which water is admitted into the coke drum filled with hot coke to cool the coke includes the steps of determining the stress imposed on the coke drum sidewall by means of at least one strain gauge affixed to the sidewall and controlling the rate of admission of water into the coke drum in response to the determined stress so that the rate of water admission keeps the stress below a preselected maximum level.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: August 18, 1998
    Assignee: Citgo Petroleum Corporation
    Inventors: Richard S. Boswell, Thomas D. Farraro
  • Patent number: 5711769
    Abstract: A continuous process for treating coal to form stable coal char by passivating the coal and then rehydrating and cooling the product thereof to prevent spontaneous ignition. The process includes the steps of pyrolyzing the coal to vaporize and remove low end volatile materials and to mobilize high end volatile materials and cooling to demobilize the high end volatile materials within the at least partially collapsed micropores of the coal char to pyrolytically passivate the coal char and form a char having about 14-22 wt % high end volatiles. The pyrolytically passivated coal char is then conveyed to a reaction vessel wherein a process gas having about 3%-21% by volume oxygen flows through the reaction vessel to at least partially fluidize the coal char and oxidatively passivate the coal by chemisorption of oxygen. The passivated coal char is then substantially simultaneously rehydrated and cooled to form a stable coal char having about 5-10 wt % moisture.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: January 27, 1998
    Assignee: Tek-Kol Partnership
    Inventors: Franklin George Rinker, Deane Avent Horne, Dennis Wayne Coolidge, Ernest Peter Esztergar
  • Patent number: 5628878
    Abstract: A method of reducing the airburning tendency of petroleum coke and carbon anodes made therefrom includes calcining the coke and spray quenching the calcined coke with an additive-containing water. The additive includes an effective amount of a compound of aluminum which is soluble in the quench water. The additive is deposited on the quenched coke product surface and protects the coke from oxidation or premature combustion when in contact with the atmosphere at high temperatures. The additive-coated coke can then be formed into an anode which also has a reduced tendency to airburn during use in a high temperature environment such as an aluminum reduction cell or an electric furnace operation.
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: May 13, 1997
    Assignee: Reynolds Metals Company
    Inventors: Euel R. Cutshall, Nolan E. Richards
  • Patent number: 5622604
    Abstract: A rotary coke cooling drum is formed of plural opposed folded plates welded together and having spaced apart openings for receiving an array of tubular cooling pockets which are separately formed and are insertable in the openings to provide heat transfer surfaces and auger flights for traversing material through the drum. The cooling pockets are formed by opposed trapezoidal shaped plate members which are welded to each other along mating edges leaving one end of the cooling pocket substantially open and the opposite end is closed over a major portion by an end cap and a short section of drain conduit adapted to project through the wall of the drum shell. The cooling pockets may each have a locating and mounting flange or doubler plate secured at the open end of the pockets and adapted to be welded to the wall of the drum shell. The pockets are easily inserted in and removed from the drum shell for repair or replacement as needed.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: April 22, 1997
    Assignee: Atlantic Richfield Company
    Inventors: Ralph Gerstenkorn, Leslie J. Okonek
  • Patent number: 5609730
    Abstract: A dry quenching apparatus for hot coke is operated by collecting data on preceding operations. The heat balance is calculated based on the collected data to determine the heat content of the charged hot coke, and an optimal operating schedule is calculated based on the calculated heat content. Optimal operating conditions are calculated based on the optimal operating schedule, and the dry quenching apparatus is operated in accordance with the optimal operating conditions.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: March 11, 1997
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Takeshi Shimooka, Isamu Minamisawa, Kosaku Sunouchi, Michitake Takahashi
  • Patent number: 5601692
    Abstract: A continuous process for treating a noncaking coal to form stable char. The process includes the sequential steps of drying the coal to remove moisture therefrom and form a dry coal; pyrolyzing the dry coal by progressively heating substantially all of the coal to a temperature sufficient to vaporize and remove low end volatile materials from the coal to form char and sufficient to mobilize at least a portion of high end volatile materials within the char and at least partially collapse micropores within the char. The char is then cooled to a temperature sufficient to demobilize the volatile materials within the at least partially collapsed micropores of the char to pyrolytically passivate the char. The char is then conveyed to a reaction vessel wherein a process gas having about 3%-21% by volume oxygen flows through the reaction vessel to oxidatively passivate the coal by chemisorption of oxygen.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: February 11, 1997
    Assignee: Tek-Kol Partnership
    Inventors: Franklin G. Rinker, Deane A. Horne, Dennis W. Coolidge, Ernest P. Esztergar
  • Patent number: 5584970
    Abstract: The biomass, particularly lump wood, is supplied to a shaft reactor at its top and is initially preheated to temperatures of about 150.degree. to 280.degree. C. and dried by a counterflowing hot gas. This is followed by a treatment in an underlying carbonizing zone, the upper portion of which is supplied with hot purging gas at a temperature of 250.degree. to 600.degree. C. The hot purging gas flows downwardly through the carbonizing zone co-currently with the wood. A gas mixture which contains purging gas and gas produced by carbonization is withdrawn from the lower portion of the carbonizing zone and is at least in part combusted outside the shaft reactor to produce a combustion gas, which is used at least in part as hot purging gas.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: December 17, 1996
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Jorg Schmalfeld, Hans J. Eichwald, Udo Zentner
  • Patent number: 5547548
    Abstract: A method for reducing the undesirable contaminants in process water produced in pyrolysis of low rank coal. The method uses the process water to quench and rehydrate a char produced by pyrolysis with the contaminants in the waster water being absorbed by the char.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: August 20, 1996
    Assignee: Tek-Kol
    Inventor: Mark A. Siddoway
  • Patent number: 5376262
    Abstract: Selenium and other non-volatile inorganic contaminants in refinery waste water are removed from said waste water and disposed of by a process comprising subjecting the contaminated waste water stream to a non-chemical concentration process producing a contaminants concentrate stream and a clean water stream and passing the contaminants concentrate stream to a coker unit wherein it is used as coker elutriant to quench the coke.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: December 27, 1994
    Assignee: Exxon Research and Engineering Company
    Inventor: David P. Perry
  • Patent number: 5194069
    Abstract: A method and an apparatus for the refinement of organic material is disclosed. Converting and processing organic material is achieved with or without organic and inorganic additions. The base material uses waste material, i.e. forest industry waste and slaughter-house waste. The method and apparatus produce a packeted end product, specifically carbon powder/granulate as full and charcoal for grilling/smoking, as well as active coal and additives for steel production.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: March 16, 1993
    Assignee: Productcontrol Limited
    Inventor: George E. Someus
  • Patent number: 5039379
    Abstract: A preferred method of dry cooling coke includes the steps of removing the coke from the coke oven, crushing the coke with a crushing device to increase a surface area thereof, transporting the coke after crushing to a dry cooling apparatus, and dry cooling the coke by the transfer of heat at the surface area which has been increased by the crushing.
    Type: Grant
    Filed: November 25, 1988
    Date of Patent: August 13, 1991
    Assignee: Ruhrkohle AG
    Inventor: Gerd Nashan
  • Patent number: 4997527
    Abstract: An improved coke handling and quenching method utilizes a coke box for receiving, cooling and carrying a coke charge from a coke oven in a pollution-free manner and employs a highly maneuverable self-propelled carrier vehicle for transporting and maneuvering the coke box. The coke in the box is indirectly cooled by directing a cooling medium over the external surface of the box. In the preferred method the trapped hot gasses are circulated within the coke box for enhancing the cooling of the coke charge. The method may also include exhausting the combustible gasses from the coke box and burning them in a burner tube.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: March 5, 1991
    Assignee: Kress Corporation
    Inventors: Edward S. Kress, Gene C. Carpenter
  • Patent number: 4935099
    Abstract: Lump wood is carbonized in a shaft retort, which is flown through by hot rinse gas. The wood is charged to the retort at its top. Wood charcoal is withdrawn from the lower portion of the retort. An exhaust gas which contains gases and vapors produced by carbonization is withdrawn from the top end of the shaft retort and is directly fed to a combustion chamber. In a first section of the combustion chamber, the exhaust gas is combusted with air at an understoichiometric to stoichiometric rate at temperatures from 800.degree. to 1250.degree. C. Part of the combustion gas is withdrawn from that first section of the combustion chamber and is cooled to temperatures from about 450.degree. to 900.degree. C. and is fed as a rinse gas to the shaft retort. In a second section of the combustion chamber, the exhaust gas is completely combusted with air supplied at an overstoichiometric rate.
    Type: Grant
    Filed: June 19, 1989
    Date of Patent: June 19, 1990
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Hans-Jurgen Weiss, Jorg Schmalfeld, Ingo Dreher, Johannes Arnhold
  • Patent number: 4867848
    Abstract: An apparatus and process for producing coke in a vertical furnace having an upper part for preheating and devolitalizing raw ovoids of coal, an electrically heated median part for carbonizing and coking the ovoids and a lower part for partially cooling the coked ovoids by counter current flow of recycled product gases recovered from the upper part of the furnace. A cooling chamber is connected to the lower part of the furnace for further cooling the coked ovoids by countercurrent flow of a portion of the recycled product gases which are withdrawn after flowing through the partially cooled coked ovoids and introduced into the upper part of the furnace to prevent condensation of condensibles contained in the product gases. The median part of the furnace may be electrically heated by electrodes, induction coils or a combination of electrodes and induction coils.
    Type: Grant
    Filed: June 15, 1987
    Date of Patent: September 19, 1989
    Assignee: Usinor Aciers
    Inventors: Jean A. G. Cordier, Bernard E. A. Dussart, Pierre H. Rollot
  • Patent number: 4842695
    Abstract: A dry cooling installation for coke includes an upright cooling shaft having an upper inlet for coke to be cooled and a lower inlet for a recirculating counterstream of cooling gas. Two gas discharge ducts are connected at two opposite points to the cooling shaft and communicate respectively with dust separators. A waste gas heat boiler is arranged between the separator and communicates with the same so as to receive clean gas in a direction which is substantially perpendicular to the movement of separated dust particles.
    Type: Grant
    Filed: March 2, 1984
    Date of Patent: June 27, 1989
    Assignee: Krupp Koppers GmbH
    Inventors: Karl Schmid, Friedrich Jokisch, Dieter H. W. Heese, Bruno Hillinger, Georg Beckmann, Norbert Heger
  • Patent number: 4832795
    Abstract: The invention relates to a coke dry cooling chamber with vertical outer walls constructed as cooling walls and parallel vertical cooling walls positioned in the cooling chamber, with supporting walls running crosswise to them. Pursuant to the invention, the cooling walls and supporting walls taper as they descend and the different coke cooling shafts created by them correspondingly broaden as they descend. A particular embodiment of the invention provides that diaphragm pipe walls constructed as cooling walls are equipped with flat outer abrasion plates. The space between the diaphragm walls, embodied in a pipe-stay-pipe construction, and the abrasion plates is filled with a highly heat-conductive material, graphite, for example.
    Type: Grant
    Filed: December 31, 1987
    Date of Patent: May 23, 1989
    Assignee: Firma Carl Still GmbH & Co. KG
    Inventors: Kurt Lorenz, Horst Dungs, Manfred Rudel, Klaus-Dieter Kemper
  • Patent number: 4802573
    Abstract: Wet quenching of coke with low vapor emissions is provided when the quenching vapors are bunkered before delivery to the atmosphere and subsequently or immediately a condensate is drawn off and cooled further. The bunkered vapors are intermittently mixed with air to prevent the development of explosive carbon monoxide concentrations. The condensate obtained is again distributed, cooled and subsequently recycled for further condensation. The apparatus for performing this process includes a quenching tower connected with a condensor separator and having a buffer space for the quenching vapors. The buffer space has a closable fresh air valve and the condensor separator has a condensor return with an intermediately connected water purifier and the condensor separator and buffer space are connected with each other. A twin cooling system can be connected with a by-pass for feed back which receives fluid from the water purifier.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: February 7, 1989
    Assignee: Heinz Holter
    Inventors: Heinz Holter, Heinrich Igelbuscher, Heinrich Gresch, Heribert Dewert
  • Patent number: 4792382
    Abstract: The invention concerns a process for removing dust from coke cooled by a dry method after the coke has left the cooling zone of a cooling chamber, and a device for carrying out the process. A dust-free flushing gas is injected below the cooling zone, preferably parallel to the direction in which the coke moves when it has been cooled to below 200.degree. C., to draw the gas off above the discharge lock together with the stirred-up coke dust, and to recirculate the gas after the dust is removed from it. As an alternative, compressed air is blown through the coke after it has left the lock and while it is being transported through a vibrating machine. The coke is cooled in a dry cooling unit to below 200.degree. C. and preferably 130.degree. to 180.degree. C. The coke is then cooled outside the dry cooling unit by means of air at about 50.degree. to 90.degree. C. and preferably 70.degree. to 80.degree. C.
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: December 20, 1988
    Assignee: Firma Carl Still GmbH & Ko. KG
    Inventors: Kurt Lorenz, Horst Dungs, Klaus Mrongowius, Jost-Wilfried Gehrhardt
  • Patent number: 4718984
    Abstract: An internally-fired vertical shaft kiln for calcining coke wherein a downwardly moving coke bed has a co-current preheat gas stream in the upper portion of the kiln and a counter-current combustion gas stream in the lower portion of the kiln. Both gases are removed at the midportion of the kiln. Combustion air is introduced to the kiln through an inclined grate at the bottom of the kiln which retains a layer of coke thereon for internal combustion. The calcined coke moves over the combusting coke layer on the grate and then through a passage to a cooling chamber where a gas stream is passed through the calcined coke for cooling. The gas stream heated in the cooling chamber can be used as the co-current gas preheat stream in the upper section of the kiln.
    Type: Grant
    Filed: July 18, 1986
    Date of Patent: January 12, 1988
    Assignee: Conoco Inc.
    Inventors: James R. McConaghy, Jr., Charles J. Swartz
  • Patent number: 4708196
    Abstract: A shaft cooler for dry quenching of coke includes an inner masonry ring that is an independent structure suspended on the top edge of the outer masonry of the shaft cooler. The weight of the inner masonry ring is carried by stays which bear on the top edge of the outer masonry. The tubular stays are disposed in one embodiment inside the masonry ring and in another embodiment outside the masonry ring. The tubular stays are connected to ring mains for conducting a coolant medium. When the tubular stays are disposed outside the masonry ring, parallel tubes are interconnected along their entire length by webs to form a closed steel ring. Ring tubes are welded to the top and bottom ends to serve as a heat exchanger and are connected to the evaporator section of a waste-heat boiler of the shaft cooler. Flue-gas passages are formed at the bottom edge of the masonry ring by radially, spaced-apart webs.
    Type: Grant
    Filed: March 23, 1984
    Date of Patent: November 24, 1987
    Inventors: Jurgen Tietze, Wilhelm Danguillier, Heinz Thubeaville, Siegfried Pohl, Friedrich Muller
  • Patent number: 4701243
    Abstract: A method of cooling and dedusting coke after leaving the coke dry cooling system comprises directing the coke at a temperature of approximately 150.degree. to 200.degree. C. into an immersion tank which has a liquid temperature of approximately 100.degree. C., thereafter conveying the coke out of the immersion tank at a selected variable speed so as to free it of fine dust. The water content of the coke after leaving the immersion tank and after an adequate evaporation time is controlled by the speed of the conveyor which is located in the immersion tank and the water content is advantageously kept below 5%, preferably from 0 to 3%. The immersion tank comprises a closed housing overlying a box-shaped tank with a continuously revolving chain conveyor located so as to extend through the tank at its upper reach for conveying the coke into the tank and which has a lower return reach which is directed outside of the tank below the tank itself.
    Type: Grant
    Filed: February 21, 1986
    Date of Patent: October 20, 1987
    Assignee: Firma Carl Still GmbH & Co. KG
    Inventors: Kurt Lorenz, Horst Dungs, Karl-Hans Auge
  • Patent number: 4668344
    Abstract: A waste heat boiler system includes a vertically elongated waste heat boiler having an upper portion with a waste gas inlet and a lower portion with an exhaust line connection which in addition to its vapor generating tubes includes evaporator tube nests and a water preheater. The waste gases are received from a dry coke cooling vessel and they are delivered through a separator by a blower to the lower end of the coke cooling vessel for flow upwardly through the hot coke. The superheater is mounted over the waste heat boiler and has a connection through a controllable valve to the top of the waste heat boiler. The superheater includes its own burner and air and external gas supply are supplied to the combustion chamber for the superheater along with bypass portion of the circulated waste gases. The steam generated by the boiler is delivered from a steam cylinder or drum in the superheated tubes of the superheater.
    Type: Grant
    Filed: October 11, 1985
    Date of Patent: May 26, 1987
    Assignee: Firma Carl Still GmbH & Co. KG
    Inventors: Kurt Lorenz, Horst Dungs, Gerd Nashan, Dieter Breidenbach, Josef Volmark
  • Patent number: 4668343
    Abstract: A method of dry cooling red-hot coke in a vessel having an antechamber with a small discharge leading to a vertically elongated cooling chamber which is of larger dimension than the discharge and with both the cooling chamber and the antechamber having fluid cooling tubes in one or more walls and the ceiling thereof and also having cooling tube bank diverging downwardly from the discharge of the antechamber into the cooling chamber, comprises directing the red-hot coke to be cooled downwardly through the antechamber and into the cooling chamber so as to maintain a charge of coke in the cooling chamber to the conical charge cone of the cooling tubes adjacent the top of the cooling chamber which extends downwardly below the discharge, thereafter circulating a coolant through the cooling tubes to effect transfer of sensible heat from the coke to the fluid and directing a cooling gas from the bottom of the cooling upwardly through the coke and above the entire area of the coke charging cone and then into an exhau
    Type: Grant
    Filed: September 10, 1984
    Date of Patent: May 26, 1987
    Assignee: Firma Carl Still GmbH & Co. KG
    Inventors: Gerd Nashan, Josef Volmari, Horst Dungs, Dieter Breidenbach, Kurt Lorenz
  • Patent number: 4664750
    Abstract: Hot coke 3 expelled from a coking chamber is conveyed in a quenching car 2 to a quenching tower 4 past an infra-red detector 6 which provides a signal to initiate supply of the quenching water. It is a problem to control the amount of quenching water supplied to achieve adequate quenching without adding excess humidity. To solve this, the detector produces an analogue signal dependent on the surface temperature of the passing coke, and the duration of supply of quenching water is determined from this signal. The signal may also be used to control variation of the degree of quenching at different parts of the car and also to control the heating of the coking chamber.
    Type: Grant
    Filed: September 17, 1980
    Date of Patent: May 12, 1987
    Assignee: Estel Hoogovens B.V.
    Inventors: Adrian A. Biesheuvel, Rudolf F. van Luik, Rudolf H. Meijer