By Hydropyrolysis Or Destructive Steam Gasification, E.g., Using Water And Heat Or Supercritical Water, To Effect Chemical Change (epo/jpo) Patents (Class 588/312)
  • Patent number: 9352178
    Abstract: A method of hydrothermal processing of highly toxic substances, wastes and metal powders, comprises a batch processing cycle of at least following steps i. to viii: i. preparing a batch of highly toxic waste, substances and metal powders for processing; ii. applying precision dozing to the batch to obtain a mixture of the batch with water and at least one additional reagent in preset proportions; iii. feeding the mixture into a reactor; iv. spraying the mixture inside the reactor with a mechanical spray nozzle; v. supplying an additional oxidizing agent inside the reactor; vi. adjusting a temperature inside the reactor to above 374.2° C.; vii. adjusting a pressure inside the reactor to above 21.8 MPa, thereby driving the water into supercritical condition and initiating a supercritical hydrothermal oxidation process; and viii. keeping the mixture in the reactor for a preset amount of time, and at the same time.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: May 31, 2016
    Assignee: HYDROTHERMA Swiss Ecological Technologies SA
    Inventor: Valeriy Surovtsev
  • Patent number: 9180327
    Abstract: The present invention relates to compositions and methods that are effective in the remediation of contaminants found in natural sources such as groundwater, surface water, soil and manufactured products. The disclosed compositions and methods provide a method for remediating chlorinated polyaromatic compounds by treating them under pressure and heat with concentrated acids and chloride salts. After decomposition has occurred, the resulting acid that is produced is made dermal and non-corrosive. The compositions and methods claimed herein make the product safe to be in contact with humans and animal tissue without causing injury.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: November 10, 2015
    Assignee: NBIP, LLC
    Inventors: Burt R. Sookram, John W. Veenstra
  • Patent number: 9023214
    Abstract: The invention provides a method and apparatus for creating plasma particles and applying the plasma particles to a liquid. Liquid feedstock (e.g., water and/or hydrocarbons mixed with biomass) is pumped through a pipeline; the single-phase stream is then transformed into a biphasic liquid-and-gas stream inside a chamber. The transformation is achieved by transitioning the stream from a high pressure zone to a lower-pressure zone. The pressure drop may occur when the stream further passes through a device for atomizing liquid. Inside the chamber, an electric field is generated with an intensity level that exceeds the threshold of breakdown voltage of the biphasic medium leading to a generation of a plasma state. Furthermore, the invention provides an energy-efficient highly adaptable and versatile method and apparatus for sanitizing water using plasma particles to inactivate biological agents contaminating water.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: May 5, 2015
    Assignee: AIC, LLC
    Inventor: Alfredo Zolezzi-Garreton
  • Patent number: 8969647
    Abstract: A continuous process for the thermal treatment of a refinery sludge, comprising the following operations: a. drying of the refinery sludge, possibly mixed with pet-coke, at a temperature ranging from 110 to 120° C.; b. gasification of the dried sludge, at a temperature ranging from 750 to 950° C., for a time of 30 to 60 minutes, in the presence of a gas containing oxygen and water vapour, with the associated production of synthesis gas (CO+H2) and a solid residue; c. combustion of the synthesis gas at a temperature ranging from 850 to 1,200° C. and recycling of the combustion products for the drying and gasification phases; and d. inertization of the solid residue, at a temperature ranging from 1,300 to 1,500° C., by vitrification with plasma torches.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: March 3, 2015
    Assignee: ENI S.p.A.
    Inventors: Giacomo Fernando Rispoli, Felicia Massetti, Michelangelo D'Abbieri, Medardo Pinti, Maria Ilaria Pistelli
  • Patent number: 8940949
    Abstract: A process for the conversion of biomass to hydrocarbon products such as transportation fuels, kerosene, diesel oil, fuel oil, chemical and refinery plant feeds. The instant process uses a hydrocarbon or synthesis gas co-feed and hot pressurized water to convert the biomass in a manner commonly referred to as hydrothermal liquefaction.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: January 27, 2015
    Inventor: Gary Peyton Miller
  • Publication number: 20140364676
    Abstract: A system for hydrothermal reaction comprises a heater (3) including a circulating component for fluid flowing across and a heat source for heating fluid, and a reactor (4, 5) including a heat preserving container in communication with the circulating component via pipes. A method for hydrothermal reaction comprises heating the fluid including the reactant and water for hydrothermal reaction, and feeding the heated fluid to the heat preserving container to perform the hydrothermal reaction.
    Type: Application
    Filed: February 9, 2012
    Publication date: December 11, 2014
    Applicant: Tongii University
    Inventors: Dezhen Chen, Xiaobo Ma, Lijie Yin, Lin Qiu
  • Publication number: 20140206921
    Abstract: The present invention relates to compositions and methods that are effective in the remediation of contaminants found in natural sources such as groundwater, surface water, soil and manufactured products. The disclosed compositions and methods provide a method for remediating chlorinated polyaromatic compounds by treating them under pressure and heat with concentrated acids and chloride salts. After decomposition has occurred, the resulting acid that is produced is made dermal and non-corrosive. The compositions and methods claimed herein make the product safe to be in contact with humans and animal tissue without causing injury.
    Type: Application
    Filed: August 17, 2012
    Publication date: July 24, 2014
    Applicant: NBIP, LLC
    Inventors: Burt R. Sookram, John W. Veenstra
  • Patent number: 8764975
    Abstract: The invention relates to a device and a method for the separation of solids from a biowaste slurry before heat treatment, and for heat treatment of the separated solids. The device comprises a chamber with a main inlet port for feeding slurry, and outlet ports. A unit for separating solids is adapted to an outlet port so, that liquid leaving the chamber has passed through the separation unit. A second outlet port is provided directly from the chamber to allow removal, following sterilization, of solids collected in the chamber. The sterilization is secured by temperature monitoring at representative locations.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: July 1, 2014
    Assignee: Steris Europe, Inc. Suomen Sivuliike
    Inventors: Mauri Salmisuo, Juha Mattila, Teppo Nurminen
  • Publication number: 20140051902
    Abstract: A treatment process of persistent organic pollutants contained in particles is provided. Said process includes reacting persistent organic pollutant in particles under hydrothermal conditions in the presence of Fe2+ and Fe3+. Several beneficial effects can be achieved, including 1) no other additive is needed during the reaction process; 2) Fe2+ and Fe3+ are safe, cheap and extensive sources; 3) because Fe2+ and Fe3+ are dissolved, they can fully disperse into particles, and fully contact can be achieved, thus obtaining a decomposition rate no less than 70% of the persistent organic pollutants is under subcritical conditions.
    Type: Application
    Filed: October 28, 2013
    Publication date: February 20, 2014
    Applicant: Tongji University
    Inventors: Dezhen Chen, Yuyan Hu, Pengfei Zhang, Lijie Yin
  • Patent number: 8614364
    Abstract: A method for converting renewable energy source electricity and a hydrocarbon feedstock into a liquid fuel by providing a source of renewable electrical energy in communication with a synthesis gas generation unit and an air separation unit is described. Oxygen from the air separation unit and a hydrocarbon feedstock is provided to the synthesis gas generation unit, thereby causing partial oxidation reactions in the synthesis gas generation unit in a process that converts the hydrocarbon feedstock into synthesis gas. The synthesis gas is then converted into a liquid fuel.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: December 24, 2013
    Assignee: Inentec Inc.
    Inventors: Daniel R. Cohn, Jeffrey E. Surma, Leslie Bromberg
  • Patent number: 8574506
    Abstract: Disclosed are a method and an apparatus for processing an exhaust gas, which enable to suppress decrease of pH and increase of ORP of a mixture of an aqueous solution of a reducing agent and an aqueous alkali solution circulated within a wet reactor comprising a reduction reaction region and an oxidation reaction region. The method and apparatus enable to prevent deterioration of the mixed aqueous solution, and can be continuously operated for a long time. Specifically, the ORP and pH of the mixed aqueous solution of the aqueous solution of a reducing agent and the aqueous alkali solution to be circulated within the wet reactor are measured, and a fresh aqueous solution of a reducing agent and a fresh aqueous alkali solution are supplied, if necessary, into a reservoir unit arranged in the lower part of the wet reactor so that the ORP and pH of the mixed aqueous solution are kept within predetermined ranges.
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: November 5, 2013
    Assignees: Osaka Prefecture University Public Corporation, Japan Science and Technology Ageny
    Inventors: Tomoyuki Kuroki, Masaaki Okubo, Toshiaki Yamamoto, Hidekatsu Fujishima, Keiichi Otsuka
  • Patent number: 8318104
    Abstract: An apparatus for treating waste comprises a gravity drop steam heating tower for heating the waste to the biological kill temperature using pressurized steam, a first feed member for feeding the waste to be sterilized to the gravity drop steam heating tower, and a vaporization system. The vaporization system includes a heating chamber for facilitating vaporization of liquids in the waste, a conveying member for conveying the waste from the lower end portion of the gravity drop steam heating tower into and through the heating chamber, and a vaporization chamber for receiving the waste from the heating chamber and for releasing vapor entrained in the waste into the vaporization chamber.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: November 27, 2012
    Inventors: Robert W. Lewis, Timothy Barrett
  • Publication number: 20120184797
    Abstract: A continuous process for the thermal treatment of a refinery sludge, comprising the following operations: a. drying of the refinery sludge, possibly mixed with pet-coke, at a temperature ranging from 110 to 120° C.; b. gasification of the dried sludge, at a temperature ranging from 750 to 950° C., for a time of 30 to 60 minutes, in the presence of a gas containing oxygen and water vapour, with the associated production of synthesis gas (CO+H2) and a solid residue; c. combustion of the synthesis gas at a temperature ranging from 850 to 1,200° C. and recycling of the combustion products for the drying and gasification phases; and d. inertization of the solid residue, at a temperature ranging from 1,300 to 1,500° C., by vitrification with plasma torches.
    Type: Application
    Filed: July 7, 2010
    Publication date: July 19, 2012
    Applicant: ENI S. p. A.
    Inventors: Giacomo Fernando Rispoli, Felicia Massetti, Michelangelo D'Abbieri, Medardo Pinti, Maria Ilaria Pistelli
  • Patent number: 8105562
    Abstract: The invention relates to a method and an apparatus for treating exhaust gases comprising organosilicon components or accompanying substances. The invention more specifically relates to the use of bulk regenerator materials as storage materials allowing periodic removal, purification, and redelivery to the system. The invention solves the problem of clogged regenerator-storage materials during regenerative post-combustion of exhaust gases containing organosilicon components.
    Type: Grant
    Filed: December 7, 2004
    Date of Patent: January 31, 2012
    Assignee: Clausthaler Umwelttechnik-Institut GmbH (CUTEC-Institut)
    Inventors: Otto Carlowitz, Bernd Ruskamp, Olaf Neese, Frank Kriebisch
  • Patent number: 8025848
    Abstract: Hydrogen peroxide is vaporized (20) and mixed (30) with ammonia gas in a ratio between 1:1 and 1:0.0001. The peroxide and ammonia vapor mixture are conveyed to a treatment area (10) to neutralize V-type, H-type, or G-type chemical agents, pathogens, biotoxins, spores, prions, and the lip-,e. The ammonia provides the primary deactivating agent for G-type agents with the peroxide acting as an accelerator. The peroxide acts as the primary agent for deactivating V-type and H-type agents, pathogens, biotoxins, spores, and prions. The ammonia acts as an accelerator in at least some of these peroxide deactivation reactions.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: September 27, 2011
    Assignees: Steris Inc, The United States of America, as represented by the Secretary of the Army, APG
    Inventors: Iain F. McVey, Lewis I. Schwartz, Michael A. Centanni, George W. Wagner
  • Patent number: 7968760
    Abstract: A method of treating particulate biodegradable organic waste by thermal hydrolysis. The method includes subjecting a quantity of the particulate biodegradable waste to thermal hydrolysis at a temperature above about 130° C. and a pressure at or above the saturated water vapor pressure to produce a slurry. The slurry will include solubilized organic material and unhydrolyzed residual solids. The method further includes decreasing the pressure at which the slurry is maintained. Typically, the step of decreasing slurry pressure will occur in a flash tank, which allows the separation of an organic acid-rich steam from other hydrolysis products. The method further includes capturing the steam or other condensable gases released when pressure is decreased and condensing the steam or other condensable gases into a condensate. The captured condensate may then be added to a quantity of particulate biodegradable waste prior to thermal hydrolysis. Also disclosed is an apparatus for practicing the method described above.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: June 28, 2011
    Assignee: CH2M Hill, Inc.
    Inventor: John W Lee, Jr.
  • Patent number: 7931711
    Abstract: Methods for using supercritical water to convert hydrocarbons, particularly hydrocarbon fuels such as diesel fuel, jet fuel, or gasoline, into carbonaceous gases and hydrogen. The synthesis gas stream generated by the fuel reforming reaction can then be further refined to increase hydrogen content, and the resultant hydrogen can be utilized to power fuel cells.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: April 26, 2011
    Assignee: DRS Sustainment Systems, Inc.
    Inventors: John R. Wootton, Sunggyu Lee, Asdrubal Garcia-Ortiz
  • Patent number: 7879134
    Abstract: Embodiments of the invention relate generally to systems used to measure mercury in gaseous emissions. In one aspect, the invention is directed to the use of silicon carbide as material for a thermal pyrolysis unit. In another aspect, at least one of silicon nitride, silicon boride, and/or boron nitride is used as material for a thermal pyrolysis unit. In another aspect, the invention is directed to an improved pyrolyzer design, in which a thermal pyrolysis unit comprises a tailpiece that allows water to be injected at the heated exit of the thermal pyrolysis unit. In another aspect, the invention is directed to the use of a coalescing filter in a scrubbing unit. In another aspect, the invention is directed to the use of a hydrophobic filter element in a scrubbing unit. One or more of these elements may be used in a conditioning module of a continuous emissions monitoring system, for example.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: February 1, 2011
    Assignee: Tekran Instruments Corporation
    Inventors: Frank H. Schaedlich, Daniel R. Schneeberger
  • Patent number: 7850904
    Abstract: An object of the present invention is to continuously feed an object to be treated to a high-pressure reactor which treats the object to be treated containing 10 mass % or more of water under high pressure, while preventing backflow of a high-pressure atmosphere from the high-pressure reactor. This is embodied by making a configuration such that the object to be treated is fed to the high-pressure reactor connected to a discharge port of a screw feeder which is provided with a feed unit for the object to be treated and the discharge port on one end side and the other end side respectively and forms a high-pressure atmosphere pressurized to, for example, 2 MPa or higher, while air-tightness between the high-pressure atmosphere and the one end side of the screw feeder is maintained by a sealing action of an accumulation compressed on the other end side of the screw feeder.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: December 14, 2010
    Assignee: The Japan Steel Works, Ltd.
    Inventors: Katsuaki Osato, Muneo Omura, Yoshinori Suto, Koji Tamura, Masao Tsurui, Takeshi Yamaguchi, Jin Ogawa, Yoshihiko Iwamoto, Jun Kakizaki
  • Patent number: 7837966
    Abstract: Ozone and, if necessary, water is added to an exhaust gas, such as air, containing hydrogen- and carbon-containing molecules of a pollutant. The exhaust gas is then continually flowed into one or more oxidizing reaction chamber modules. In the reaction chamber(s) the ozone- and water-containing gas is subjected to intense ultraviolet radiation (wavelength of 254 nm) to promote the formation of hydroxyl radicals to oxidize the pollutant molecules to carbon dioxide and water. The continually discharged gas is analyzed for residual ozone and hydrocarbon content and the analytical data used in feedback control of ozone addition and UV radiation intensity.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: November 23, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Kenneth B. Gross, Daniel Dziedzic, John T. Johnson
  • Patent number: 7799113
    Abstract: Embodiments of the invention relate generally to systems used to measure mercury in gaseous emissions. In one aspect, the invention is directed to the use of an inert covalently bonded material selected from silicon carbide (SiC), silicon oxides (SiOn, n=1-2), silicon nitride (e.g. Si3N4), silicon boride (e.g. SiB6), boron nitride (e.g. BN) and mixtures thereof as material for a thermal pyrolysis unit. In another aspect, the invention is directed to an improved pyrolyzer design, in which a thermal pyrolysis unit comprises a tailpiece that allows water to be injected at the heated exit of the thermal pyrolysis unit. In another aspect, the invention is directed to the use of a coalescing filter in a scrubbing unit. In another aspect, the invention is directed to the use of a hydrophobic filter element in a scrubbing unit. One or more of these elements may be used in a conditioning module of a continuous emissions monitoring system, for example.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: September 21, 2010
    Assignee: Tekran Instruments Corporation
    Inventors: Frank H. Schaedlich, Daniel R. Schneeberger, Glenn A. Norton
  • Publication number: 20100234667
    Abstract: A method for destroying asbestos in mainly organic matrix asbestos-containing waste (ACW), which includes the steps of: preparing the asbestos-containing waste; preparing a supercritical aqueous phase; allowing asbestos and the primarily organic matrix of the asbestos-containing waste to react with the aqueous phase for a time t in an appropriate reactor at predetermined pressure P and temperature T to maintain the aqueous phase in supercritical conditions; cooling and condensing the aqueous phase flowing out of the reactor; and separating said aqueous phase from any entrained solid product therein. The step in which the supercritical aqueous phase is prepared includes an additional step, in which at least one oxidizing compound is added in a predetermined concentration C1, the pressure P is in a range from 25 to 27 MPa, and the temperature T is in a range from 600° C. to 650° C., causing the asbestos and the organic binder to be simultaneously destroyed.
    Type: Application
    Filed: June 20, 2006
    Publication date: September 16, 2010
    Applicants: S SISTEMI S.A.S., UNIVERSITA' DEGLI STUDI DI GENOVA
    Inventors: Alberto Servida, Alessandro Servida, Simona Grassi, Giuseppe Nano
  • Publication number: 20100160709
    Abstract: The present invention relates to processes and apparatus for improving municipal waste treatment in autoclave processes. Improvements relate to the use of air-waste stream treatment, indirect heating with thermal fluid, forced steam transfer, autoclave design, waste treatment of contaminated air,classifiers for better separation of fibres from glass or grit and processing. The improvements allow more efficient, safer and environmentally friendly processing, and better end products.
    Type: Application
    Filed: January 1, 2008
    Publication date: June 24, 2010
    Applicant: STERECYCLE LTD.
    Inventors: Duncan John Grierson, Philip James Campion
  • Patent number: 7682514
    Abstract: A method for oxidizing an organic material includes the steps of (a) forming a preoxidation mixture comprising the organic material and water, and (b) causing the preoxidation mixture to react with a liquid oxidizer in a continuous flow reactor supercritical conditions for water, including a pressure of at least 3206 psia and a temperature of at least 705° F., to form a post-oxidation mixture containing condensible material and non-condensible material, wherein substantially all of the organic material has been oxidized.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: March 23, 2010
    Assignee: Parsons Corporation
    Inventors: John Scott, James Osterloh
  • Patent number: 7674946
    Abstract: Method of remediating a soil contaminated by polyhalogenated hydrocarbons, in particular PCBs, PCDDs and PCDFs, comprising the steps of removing and sieving the soil to free it of stones and gravel; possibly regulating the moisture content of the sieved soil to a value of 10-30%; subjecting the sieved soil to thermal treatment while it flows in the form of a thin, turbulent, dynamic layer in contact with a wall heated to at least 250° C.; separating the thermally treated soil from the steam generated following such treatment, the soil being substantially free of the aforementioned polyhalogenated hydrocarbons.
    Type: Grant
    Filed: November 16, 2005
    Date of Patent: March 9, 2010
    Assignee: Vomm Chemipharma S.r.l.
    Inventor: Giuseppina Cerea
  • Patent number: 7642394
    Abstract: Systems and methods for recycling waste and reclaiming beneficial and useful compositions such as organic solvents comprises a shredder, operating in an inerted or anaerobic atmosphere, which shreds the waste into smaller pieces that are fed into and indirectly heated in an anaerobic desorption unit so as to vaporize at least one organic compound associated with the waste. A vacuum means is used to transfer the organic compound vapors from the desorption unit to a water quench condensing unit that operates to produce a mixed organic compound liquid stream. The liquid organic compound and water stream is then processed in an oil and water separator. The water is separated and can be reused in the system for quenching gas vapors or inerting the desorption unit. The water-free mixed organic compound liquid stream is then fed into a multi-stage packed distillation column separating organic compound according to boiling points to produce products such as organic solvents.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: January 5, 2010
    Assignee: Pollution Control Industries, Inc.
    Inventors: Kenneth E. Carle, Kevin P. Prunsky
  • Patent number: 7531708
    Abstract: A mixed waste mediated electrochemical oxidation process (MEO) process and apparatus for the dissolution of transuranic elements, and/or compounds thereof in transuranic waste, low level waste (LLW), low level mixed waste, special case waste, and greater than class C LLWS, and also the destruction of the non-fluorocarbon organic component in the waste. The MEO process and apparatus operates in three different modes: dissolution, destruction, and decontamination. In the first mode, dissolution, the process runs until the transuranics such as a mixed oxide or carbide, and/or mixture of oxides or carbides of uranium and plutonium are totally dissolved into solution. The second mode, destruction, the process is operated such that the mixed waste materials are reduced to CO2, water and small amounts of inorganic salts. The third mode, decontamination, involves contaminated equipment. In the decontamination mode the MEO process destroys the mixed wastes that have contaminated the equipment.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: May 12, 2009
    Assignee: Scimist, Inc.
    Inventors: Roger W. Carson, Bruce W. Bremer
  • Patent number: 7521585
    Abstract: TNT and nitramines, such as RDX, are recovered from mixtures containing same. The present invention more particularly relates to the removal of such mixtures from munitions and the separation of components contained in the munitions.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: April 21, 2009
    Assignee: G.D.O. Inc
    Inventors: Kym B. Arcuri, Duane A. Goetsch, Steve J. Schmit, Ryan M. Smith
  • Patent number: 7399408
    Abstract: A method and device for oxidization of materials in supercritical water. The method involves a) introducing a fluid containing water and an oxidizing agent in a ring-shaped area and through a first end of a substantially tube-shaped reactor comprising an external wall and an internal tube, b) heating the fluid in the ring-shaped area, c) introducing the heated fluid into the internal tube and simultaneously introducing material to be treated into said internal tube at a second end of the reactor, d) mixing the fluid and the material to be treated in a first portion of the internal tube, followed by cooling the obtained mixture in a second portion of the internal tube, and e) isobarically discharging the fluid/oxidized material from the internal tube of the reactor.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: July 15, 2008
    Assignee: Commissariat A l'Energie Atomique
    Inventors: Christophe Joussot-Dubien, Gérard Didier, Hubert-Alexandre Turc
  • Publication number: 20080103347
    Abstract: A process of washing plastics contaminated with polychlorinated biphenyls (PCBs) is provided to reduce the concentration of the PCBs. A two-step process includes a first washing step using a selected washing solution or solvent, such as, a non-flammable solvent, and followed by a second step using thermal desorption. The two-step process enables reducing the concentration of PCBs in polymers, such as recovered from shredder residue, for example, to as low as 0.253 PPM. One of the preferred solvents is Perchloroethylene.
    Type: Application
    Filed: October 31, 2006
    Publication date: May 1, 2008
    Inventors: Bassam J. Jody, Joseph A. Pomykala,, Edward J. Daniels, Jeffrey S. Spangenberger
  • Patent number: 7329395
    Abstract: A treatment apparatus for organic waste including a reaction vessel for introducing and decomposing organic waste and pulling out decomposed organic waste as a treated fluid. The reaction vessel includes an internal vessel made of corrosion-resistant material, an external vessel made of pressure-resistant material provided for surrounding the internal vessel via a gap, and an interconnection pipe for interconnecting the gap and the internal vessel outside the external vessel, thereby to control inside the gap and inside the internal vessel to practically equal pressure. The internal vessel has a heating zone for heating the introduced organic waste to a temperature higher than a critical point of water, a reaction zone for holding and decomposing the organic waste at a temperature higher than the critical point of water, and a cooling zone for cooling the treated fluid containing a decomposition product of the organic waste to lower than 100° C.
    Type: Grant
    Filed: August 19, 2004
    Date of Patent: February 12, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshie Akai, Masahiko Oosaki, Kazuya Yamada, Takao Takada
  • Patent number: 7309808
    Abstract: A process for the low temperature, non-incineration decontamination of contaminated materials, such as chemical weapon components containing residual quantities of chemical warfare agents. The process includes the steps of (a) contacting the contaminated materials with steam at substantially ambient pressure in a substantially dry first heated vessel for a period of at least about 15 minutes, the steam being at a temperature of at least about 560° C., (b) removing condensible and non-condensible gases from the first heated vessel and heating them in a second vessel at substantially ambient pressures to temperatures of at least about 500° C. for a period of at least about one second in an atmosphere containing steam, and (c) catalytically treating non-condensible gases from the second vessel in the presence of oxygen so as to reduce the concentration of chemical warfare agents to less than about 1.0 mg/m3 at standard temperature and pressure.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: December 18, 2007
    Assignee: Parsons Corporation
    Inventors: John A. Scott, James Osterloh
  • Publication number: 20070253885
    Abstract: A steam stripping device for an inorganic processing solution is provided, which includes a steam stripping unit for heat stripping the inorganic processing solution; a heat exchanging unit coupled to the steam unit for heating the inorganic processing solution; and a desuperheating unit for decreasing the temperature of a steam when overheated before the steam is fed into the heat exchanging unit by cooling liquid. The device can be applied to the inorganic processing solution for removing organic contaminants contained therein. By the provision of the desuperheating unit, the adverse influence on the inorganic processing solution caused by partially superheating can be prevented.
    Type: Application
    Filed: March 28, 2007
    Publication date: November 1, 2007
    Applicant: China Petrochemical Development Corporation
    Inventors: Shu-Hung Yang, Shou-Li Luo
  • Patent number: 7220396
    Abstract: There are disclosed various processes, apparatuses and systems for treating a halogen-containing gas such as F2 that involve generating a plasma in order to reduce chemically the halogen-containing gas into products that are more environmentally manageable. According to a particular embodiment, a reducing agent is mixed with the halogen-containing gas to produce a feed gas mixture and a non-thermal plasma is generated in the feed gas mixture in the presence of liquid water. According to another embodiment, a vaporized portion of a liquid reducing agent is mixed with the halogen-containing gas to produce a reaction mixture and a non-thermal plasma is generated in the reaction gas mixture to reduce the halogen-containing gas.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: May 22, 2007
    Assignee: Battelle Memorial Institute
    Inventors: Christopher L. Aardahl, Rick J. Orth, Kenneth G. Rappé, Delbert L. Lessor, Gary B. Josephson
  • Patent number: 7122167
    Abstract: A supercritical oxidation process carried out in water is capable of oxidizing “organics” in precious metal organic compositions such as heterogeneous (Pt/C) or homogeneous precious metal catalysts and producing a precious metal oxide with few by-products and low losses of precious metal.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: October 17, 2006
    Assignees: Johnson Matthey Public Limited Company, Chematur Engineering AB
    Inventors: Simon Collard, Anders Gidner, Brian Harrison, Lars Stenmark
  • Patent number: 7033550
    Abstract: The catalytic exhaust gas decomposition apparatus spirals an exhaust gas containing therein a substance to be decomposed and a reactant gas, rectifies the spiral flow, and lets the substance to be decomposed contained in the exhaust gas react with the reactant gas after the spiral flow has been rectified. This arrangement rectifies the spiral flow of the exhaust gas and the reactant gas with a plate-like baffle wall having therein a through hole at a portion near the center thereof. The spiral flow is allowed to pass through the through hole so as to be centralized temporarily. The spiral flow then passes through an enlarged section of a flow path downstream of the through hole before being introduced into the catalyst bed.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: April 25, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Shuichi Kanno, Shin Tamata, Kazuyoshi Irie, Kenji Yamamoto, Masayuki Taniguchi, Osamu Ito, Hironobu Kobayashi
  • Patent number: 7005117
    Abstract: A method of removing harmful components of a perfluorocarbon gas or a perfluorocompound including the step of mixing at least one of a hydrocarbon gas and NH3 gas with an exhaust gas containing a perfluorocarbon or a perfluorocompound discharged from manufacturing equipment. The method also includes the step of thermally decomposing the resulting mixed gas in a non-oxidizing atmosphere.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: February 28, 2006
    Assignee: Kanken Techno Co., Ltd.
    Inventor: Hiroshi Imamura
  • Patent number: 6958428
    Abstract: A process for the low temperature, non-incineration decontamination of contaminated materials, such as chemical weapon components containing residual quantities of chemical warfare agents. The process includes the steps of (a) contacting the contaminated materials with steam at substantially ambient pressure in a substantially dry first heated vessel for a period of at least about 15 minutes, the steam being at a temperature of at least about 560° C., (b) removing condensible and non-condensible gases from the first heated vessel and heating them in a second vessel at substantially ambient pressures to temperatures of at least about 500° C. for a period of at least about one second in an atmosphere containing steam to convert 99.99 wt. % of the chemical warfare agents to non-chemical warfare agents, and (c) treating non-condensible gases from the second vessel with a chemical absorbent, so as to reduce the concentration of chemical warfare agents to less than about 1.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: October 25, 2005
    Assignee: Parsons Corporation
    Inventors: John A. Scott, James Osterloh