Pigment Or Carbon Black Producer Patents (Class 422/150)
With means injecting quench stream into reaction chamber downstream of reaction site (Class 422/151)
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Patent number: 4503027Abstract: The tint residual of produced carbon black appears to go through a maximum value at a toluene photelometer of between about 65 and about 75. A process is disclosed for maximizing the tint residual of carbon black product at constant reactor volume and combustion gas flow by measuring the photelometer of the produced carbon black and changing the feedstock rate so that the photelometer of the carbon black being produced falls within the range of 65 to about 75.Type: GrantFiled: July 29, 1983Date of Patent: March 5, 1985Assignee: Phillips Petroleum CompanyInventor: Paul J. Cheng
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Patent number: 4501720Abstract: A counter-rotational flow of combustion gas within a carbon black reactor is created by a baffle, such as an axially aligned helix-shaped fin, to promote the mixing of combustion gas and feedstock.Type: GrantFiled: June 24, 1982Date of Patent: February 26, 1985Assignee: Phillips Petroleum CompanyInventor: Paul J. Cheng
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Patent number: 4500491Abstract: A carbon black reactor is equipped with multiple feedstock nozzles which revolve into axial alignment with the reactor throat.Type: GrantFiled: June 13, 1983Date of Patent: February 19, 1985Assignee: Phillips Petroleum CompanyInventor: Willie Tillman
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Patent number: 4490346Abstract: In the production of carbon black, low BTU content gases are combusted in a compact combustion zone with near stoichiometric amounts of oxidant gases, tempered to the desired temperature and volume with a diluent gas stream which can be selected from air and filter off-gases, and introduced into a reactor for the pyrolysis of a carbonceous feedstock to form carbon black.Type: GrantFiled: July 12, 1982Date of Patent: December 25, 1984Assignee: Phillips Petroleum CompanyInventor: Paul J. Cheng
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Patent number: 4483841Abstract: A carbon black reactor having tangential entry of combustion gases is provided with semicircular ramps to smoothly guide the flow of each tangentially introduced stream of combustion gases toward the reactor outlet enough to avoid turbulent impact with other tangentially introduced combustion gas streams.Type: GrantFiled: April 29, 1983Date of Patent: November 20, 1984Assignee: Phillips Petroleum CompanyInventor: William R. King
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Patent number: 4447401Abstract: A carbon black reactor to produce non-uniform gas flow patterns utilizes(a) a precombustion chamber skewed at an angle of 30-60 degrees from the reactor axis with(1) offset tangential hot gas entries,(2) axial or offset multiple oil feed entries,(b) an optional venturi which can be offset from the reactor axis and/or asymmetric in form.Type: GrantFiled: February 22, 1982Date of Patent: May 8, 1984Assignee: Phillips Petroleum CompanyInventors: John R. Casperson, Paul D. Hann
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Patent number: 4447400Abstract: A device for metering liquid yellow phosphorus into a rotating ball mill for the production of red phosphorus therein includes a stationary outer tubular structure surrounding an inner tubular structure rotatably mounted therein. A valve having a valve rod associated with it is installed within the inner tubular structure near its end close to the ball mill. A plug provided with a central bore receiving the valve rod is installed within the inner tubular structure near its end remote from the ball mill. A bellows surrounds a portion of the valve rod inside the inner tubular structure, the bellows being tightly connected to the plug and valve rod.Type: GrantFiled: March 29, 1982Date of Patent: May 8, 1984Assignee: Hoechst AktiengesellschaftInventors: Hans-Werner Stephan, Hermann Klein, Klaus Lehr
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Patent number: 4439400Abstract: Carbon black reactors have dual fluid injectors whereby liquid hydrocarbonaceous feedstock atomized by discharging the feedstock through a dual fluid injector with an atomizing fluid. A method for cleaning coke deposits from such dual fluid injectors comprises interrupting the supply of atomizing fluid thereto a cleaning interval effective to remove the coke deposits.Type: GrantFiled: January 29, 1982Date of Patent: March 27, 1984Assignee: Phillips Petroleum CompanyInventors: Paul J. Cheng, King L. Mills
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Patent number: 4439401Abstract: Carbon black is produced in a flow reaction by spraying a hydrocarbon containing liquid feedstock with the aid of a propellant gas into a stream of hot reaction gases produced by burning a fuel, the feedstock-propellant gas-jet enters the reaction zone with a spraying angle that is greater than the spreading angle of a free jet. There is also described an apparatus for carrying out the process which comprises a binary injector supporting an atomizing nozzle whose head has several channels which are adjusted from zero degrees to different angles to the longitudinal axis of the nozzle.Type: GrantFiled: March 19, 1982Date of Patent: March 27, 1984Inventors: Manfred Voll, Lothar Rothbuhr, Gerhard Kuhner
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Patent number: 4436698Abstract: Carbon black process control system wherein in the preferred embodiment responsive to a determination of the humidity or water content in the free oxygen-containing gas flowing into the carbon black reactor two separate modes of control are calculated and a selection between the modes is made depending upon the influence each of the modes has on further properties of the overall operation. For example, the iodine number of the carbon black is controlled by either manipulating the air flow or the oil flow into the carbon black reactor to maintain the iodine number constant despite changes in the humidity and the selection between the two control modes (air flow control or oil flow control) is made in accordance with a determination of the respective conversion achieved.Type: GrantFiled: July 23, 1982Date of Patent: March 13, 1984Assignee: Phillips Petroleum CompanyInventors: Galen D. Stacy, Merle R. Likins, Jr.
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Patent number: 4434135Abstract: A gas black burner is described which is used normally in connection with a rotating cooling roller as a deposition surface, so that its discharge openings for the operating gas containing the raw material for the carbon black are directed against the cooled deposition surface. The burner is characterized by the fact that it is formed as a pipe shaped chamber provided with at least one supply line and disposed in parallel relationship to the deposition surface, which chamber has slit shaped discharge openings in its jacket.The invention relates to a gas black burner with openings to be directed against a cooled deposition surface.Type: GrantFiled: February 26, 1982Date of Patent: February 28, 1984Assignee: Degussa AktiengesellschaftInventors: Peter Kleinschmit, Manfred Voll, Richard Engel
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Patent number: 4431607Abstract: A pipe, containing a multiplicity of spray ports spaced longitudinally along the pipe so that carbonaceous feedstock can be simultaneously ejected from the ports outwardly from the pipe, is adapted for concentric longitudinal, axial alignment in a carbon black reactor. Preferably the pipe is jacketed so that coolant fluid can be circulated through the annulus formed between the pipe and the jacket and conduit means provide a connection from the pipe to spray ports located in the jacket wall thereby providing means for ejecting carbonaceous feedstock outwardly from the jacketed pipe. A carbon black reactor containing a feedstock nozzle as described above with the nozzle adapted to eject hydrocarbon feedstock into either a precombustion or a combustion zone of the reactor. A method for producing carbon black in which hydrocarbon feedstock is introduced into either a precombustion or a combustion zone of a carbon black reactor through a feedstock nozzle as described above.Type: GrantFiled: June 16, 1981Date of Patent: February 14, 1984Assignee: Phillips Petroleum CompanyInventor: John R. Casperson
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Patent number: 4431624Abstract: A carbon black feedstock nozzle in which a central pipe with a diverging nozzle outlet is surrounded by at least one concentric annulus having a diverging nozzle outlet with a spray angle different from that of the central pipe and with means for supplying a separate controlled flow of inlet material to the central pipe and concentric annulus. In the preferred embodiment multiple concentric annuli surround the central pipe with the outermost annulus supplied with a coolant fluid as inlet material, and the other annuli supplied with hydrocarbon suitable as carbon black reactor feedstock. In a preferred embodiment means are provided for a seriatim cycling of flow through the various hydrocarbon feedstock annuli. A carbon black reactor in which a feedstock nozzle as described above discharges in a portion of the reactor that is either a precombustion section or a combustion section.Type: GrantFiled: September 29, 1982Date of Patent: February 14, 1984Assignee: Phillips Petroleum CompanyInventor: John R. Casperson
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Patent number: 4418049Abstract: A carbon black reactor is equipped with multiple feedstock nozzles which revolve into axial alignment with the reactor throat.Type: GrantFiled: May 28, 1982Date of Patent: November 29, 1983Assignee: Phillips Petroleum CompanyInventor: Willie Tillman
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Patent number: 4404178Abstract: Combustion gases containing free oxygen and a carbonaceous feed are introduced into a carbon black reactor, with the combustion gases being at a temperature sufficient to pyrolyze the feed hydrocarbon to produce combustion products containing particulate carbon black. The combustion products are cooled by quenching to form a gaseous effluent containing particulate carbon black. The effluent is discharged from the reactor to an indirect heat exchange means for further cooling the effluent. Carbon black is introduced into the effluent inlet of the indirect heat exchange means for removing carbon black which has become deposited on surfaces defining the flow path or flow paths for the effluent flowing through the heat exchange means. The effluent after cooling in the indirect heat exchange means is passed to separating means for separating the effluent into a gaseous portion and a particulate carbon black portion. Thereafter, the particulate carbon black portion can be pelleted.Type: GrantFiled: February 15, 1980Date of Patent: September 13, 1983Assignee: Phillips Petroleum CompanyInventors: Paul H. Johnson, Harwell E. Benjamin
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Patent number: 4402929Abstract: Carbon black having a high diphenylguanidine (DPG) value and a low pH value is produced in a reactor by separating the combustion gases into a plurality of streams by means of a perforate partition. This partition has a tubular portion or a conical portion which is surrounded by a plurality of through apertures at the downstream end. The hot combustion gases contact the make-hydrocarbon downstream of the partition. The combustion gases are introduced into the reactor upstream of the partition in a generally tangential direction for vortex flow while the make-hydrocarbon is introduced generally axially into the reactor.Type: GrantFiled: December 30, 1981Date of Patent: September 6, 1983Assignee: Phillips Petroleum CompanyInventor: Harold R. Hunt
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Patent number: 4394350Abstract: A method and apparatus for producing carbon black in which combustion gas is introduced into a precombustion or combustion zone of a carbon black reactor in a manner to produce a vortex of combustion gases traveling axially through said reactor and a flow of fluid which contains feedstock is introduced into the reactor in a manner to produce another axially moving vortex internal to the combustion gas vortex with both of these vortices passed through a combustion zone to produce carbon black. In embodiments of the invention, method and apparatus for producing a vortex of feedstock, a vortex of cooling air interfaced with axially flowing feedstock, or combined vortices of feedstock and cooling air.Type: GrantFiled: November 6, 1981Date of Patent: July 19, 1983Assignee: Phillips Petroleum CompanyInventor: Paul J. Cheng
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Patent number: 4391789Abstract: Disclosed is a method of making a carbon black product having a controllable aggregate particle size distribution comprising forming in a first zone of the carbon black reactor combustion gases at a high temperature and having a gradient of increasing turbulence in the downstream direction, injecting substantially radially into the first zone a carbon black feedstock into more than one of the "zones of increasing turbulence" before the gases reach maximum turbulence, cracking the feedstock to carbon black in a second (reaction) zone, quenching the carbon black reaction, and collecting the carbon black product. Also discussed is a method for making a carbon black product having varying physical characteristics as a result of modifying reaction kinetics at any position of oil injection into the "zones of turbulence".Type: GrantFiled: April 15, 1982Date of Patent: July 5, 1983Assignee: Columbian Chemicals CompanyInventor: Earl J. Estopinal
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Patent number: 4360497Abstract: A carbon black feedstock nozzle in which a central pipe with a diverging nozzle outlet is surrounded by at least one concentric annulus having a diverging nozzle outlet with a spray angle different from that of the central pipe and with means for supplying a separate controlled flow of inlet material to the central pipe and concentric annulus. In the preferred embodiment multiple concentric annuli surround the central pipe with the outermost annulus supplied with a coolant fluid as inlet material, and the other annuli supplied with hydrocarbon suitable as carbon black reactor feedstock. In a preferred embodiment means are provided for a seriatim cycling of flow through the various hydrocarbon feedstock annuli. A carbon black reactor in which a feedstock nozzle as described above discharges in a portion of the reactor that is either a precombustion section or a combustion section.Type: GrantFiled: April 24, 1981Date of Patent: November 23, 1982Assignee: Phillips Petroleum CompanyInventor: John R. Casperson
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Patent number: 4355016Abstract: A carbon black process control is described wherein in the preferred embodiment responsive to a determination of the humidity or water content in the free oxygen-containing gas flowing into the carbon black reactor two separate modes of control are calculated and a selection between the modes is made depending upon the influence each of the modes has on further properties of the overall operation. For example, the iodine number of the carbon black is controlled by either manipulating the air flow or the oil flow into the carbon black reactor to maintain the iodine number constant despite changes in the humidity and the selection between the two control modes (air flow control or oil flow control) is made in accordance with a determination of the respective conversion achieved.Type: GrantFiled: October 9, 1980Date of Patent: October 19, 1982Assignee: Phillips Petroleum CompanyInventors: Galen D. Stacy, Merle R. Likins, Jr.
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Patent number: 4348361Abstract: A process and apparatus for recovering carbon black from hot smoke which comprises passing the smoke through a cyclone separation zone following cooling, then through aggregate filter beds and regeneration of filter beds with clean off-gas which is recycled to the carbon black reaction zone as quench.Type: GrantFiled: May 18, 1981Date of Patent: September 7, 1982Assignee: Phillips Petroleum CompanyInventor: Paul H. Johnson
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Patent number: 4320090Abstract: Carbon black having a high diphenylguanidine (DPG) value and a low pH value is produced in a reactor by separating the combustion gases into a plurality of streams by means of a perforate partition. This partition has a tubular portion or a conical portion which is surrounded by a plurality of through apertures at the downstream end. The hot combustion gases contact the make-hydrocarbon downstream of the partition. The combustion gases are introduced into the reactor upstream of the partition in a generally tangential direction for vortex flow while the make-hydrocarbon is introduced generally axially into the reactor.Type: GrantFiled: February 5, 1980Date of Patent: March 16, 1982Assignee: Phillips Petroleum CompanyInventor: Harold R. Hunt
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Patent number: 4315902Abstract: Carbon black is produced in a process comprising prequenching with hollow cone prequench having an included angle effective to produce high tint residual carbon black. Iodine number and tint strength number are changed by changing the included angle of the prequench.Type: GrantFiled: February 7, 1980Date of Patent: February 16, 1982Assignee: Phillips Petroleum CompanyInventor: Meredith N. Dilbert
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Patent number: 4311672Abstract: In a carbon black manufacturing process in which an off-specification rerun carbon black is mixed with the carbon black flowing from a carbon black reactor to produce a combined carbon black stream, method and apparatus is provided for controlling the carbon black process so as to insure that the combined carbon black stream will meet predetermined specifications. The feed flow to the carbon black reactor is controlled in response to a comparison of a prediction of the actual surface area of the combined carbon black stream with the desired surface area of the combined carbon black stream so as to provide a combined carbon black stream made up of carbon black particles which have a desired surface area.Type: GrantFiled: November 5, 1980Date of Patent: January 19, 1982Assignee: Phillips Petroleum CompanyInventor: Robert H. Kallenberger
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Patent number: 4294814Abstract: Stoichiometric combustion conditions are provided at a location remote from reactor walls in a carbon black process and apparatus by injecting radially inwardly hot combustion gases of a complementary composition with respect to the hot combustion gases introduced tangentially into the reactor.Type: GrantFiled: March 28, 1980Date of Patent: October 13, 1981Assignee: Phillips Petroleum CompanyInventor: Paul J. Cheng
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Patent number: 4272487Abstract: In the usual elongated carbon black furnace which is provided at one end with a combustion gas entry section, usually of diameter larger than the remainder of the reactor, in lieu of the usual entry port or ports providing hot combustion gases with which to decompose the make oil or gas to carbon black, there are provided independent, double-entry port or pipes. At each double entry there is an outer port and an inner port or pipe. Usually, the pipe approaches the enlarged section or precombustion chamber somewhat tangentially and at a substantial right angle to the longitudinal axis of the elongated reactor or furnace. Thus, viewing the furnace end-on, the outer port or entry will spew its fluid near and onto the walls of the precombustion chamber while the inner port or entry will deliver its gases to a point nearer the longitudinal axis.Type: GrantFiled: December 3, 1979Date of Patent: June 9, 1981Assignee: Phillips Petroleum CompanyInventor: Oliver K. Austin
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Patent number: 4260583Abstract: Deposits in a carbon black reactor are reduced by passing feed oil, quench water and/or liquid fuel to the reactor through a magnetic field prior to introduction into the reactor.Type: GrantFiled: April 8, 1976Date of Patent: April 7, 1981Assignee: Phillips Petroleum CompanyInventor: Amaury Sanclemente
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Patent number: 4256720Abstract: In a carbon black manufacturing process in which an off-specification rerun carbon black is mixed with the carbon black flowing from a carbon black reactor to produce a combined carbon black stream, method and apparatus is provided for controlling the carbon black process so as to insure that the combined carbon black stream will meet predetermined specifications. The feed flow to the carbon black reactor is controlled in response to a comparison of a prediction of the actual surface area of the combined carbon black stream with the desired surface area of the combined carbon black stream so as to provide a combined carbon black stream made up of carbon black particles which have a desired surface area.Type: GrantFiled: March 12, 1979Date of Patent: March 17, 1981Assignee: Phillips Petroleum CompanyInventor: Robert H. Kallenberger
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Patent number: 4251221Abstract: A method and apparatus for producing carbon black under fine-tuned conditions which comprises measuring a property of the black produced in a tangential introduction of hot gases to produce a vortex operation and adjusting introduction of the hot gases and/or the make oil or gas responsive to said property until it has a desired value. In one embodiment, the adjustment is made manually. In another embodiment, it can be made by a computerized operation. The point of introduction of hot gases can be adjusted by providing at least one movable orifice-carrying element in the conduit supplying the hot combustion gases. The discharge end of the make oil or gas supply pipe can also be relocated according to the measured property.Type: GrantFiled: May 30, 1979Date of Patent: February 17, 1981Assignee: Phillips Petroleum CompanyInventor: Oliver K. Austin
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Patent number: 4247530Abstract: Combustion gases containing free oxygen and feed hydrocarbon are introduced into a carbon black reactor, with the combustion gases being at a temperature sufficient to pyrolyze the feed hydrocarbon to produce particulate carbon black. The combustion products are cooled by quenching to form a gaseous effluent containing particulate carbon black. The quenched effluent is discharged from the reactor to an indirect heat exchange means for further cooling the effluent. Control means is provided for producing a signal representative of the rate of heat transfer in the indirect heat exchange means. When the heat transfer rate falls below a predetermined level, the control means closes a valve in the feed hydrocarbon input line to terminate flow of the feed hydrocarbon to the reactor. In the absence of feed hydrocarbon, hot combustion gases flowing through the reactor and the indirect heat exchange means contain sufficient free oxygen to burn out carbon black deposits in the indirect heat exchange means.Type: GrantFiled: April 19, 1978Date of Patent: January 27, 1981Assignee: Phillips Petroleum CompanyInventors: Paul J. Cheng, King L. Mills
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Patent number: 4237092Abstract: In a carbon black manufacturing process a method and apparatus is provided whereby the off-gas from at least one carbon black manufacturing process is utilized both to lower the temperature of the hot combustion gases and to provide some heat to the hot combustion gases by being burned in the combustion tunnel of a carbon black reactor. A portion of the off-gas is utilized while still holding the total volume of the hot combustion gases substantially constant at a preselected substantially constant temperature to insure a substantially constant quality of carbon black.Type: GrantFiled: October 2, 1978Date of Patent: December 2, 1980Assignee: Phillips Petroleum CompanyInventor: Robert J. Lewis
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Patent number: 4234543Abstract: A high-temperature, fluid-wall chemical reactor can be equipped with a variable profile, counterflow heat exchanger and a reaction product control system. The heat exchanger includes two tubular walls, positioned concentric of one another, and a spiral baffle disposed between the two walls to define a spiral, annular coolant channel. The walls and baffle are made of a refractory material. The heat exchanger has an inlet and an outlet to permit a coolant to be circulated through the coolant channel. The reaction product control system includes a reaction product analyzer and means for withdrawing and transferring samples of reaction product exiting the reactor. The reaction product analyzer can receive samples of reaction product and generate a signal corresponding to deviations between the chemical composition of the product and a preselected composition.Type: GrantFiled: October 30, 1978Date of Patent: November 18, 1980Assignee: Thagard Technology CompanyInventor: Edwin Matovich
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Patent number: 4222987Abstract: The calciner is an elongated, insulated chamber, in which material is fed to counter-rotating screw conveyors. The material is calcined by heat radiating from a muffle plate interposed between the conveyors and gas-fired burners. This radiant heating, applied evenly to material having a constantly-exposed fresh surface, results in increased production, lower fuel cost per pound of product, and higher quality product.Type: GrantFiled: June 26, 1978Date of Patent: September 16, 1980Assignee: Cities Service CompanyInventor: David P. Keller
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Patent number: 4220624Abstract: In the usual elongated carbon black furnace which is provided at one end with a combustion gas entry section, usually of diameter larger than the remainder of the reactor, in lieu of the usual entry port or ports providing hot combustion gases with which to decompose the make oil or gas to carbon black, there are provided independent, double-entry port or pipes. At each double entry there is an outer port and an inner port or pipe. Usually, the pipe approaches the enlarged section or precombustion chamber somewhat tangentially and at a substantial right angle to the longitudinal axis of the elongated reactor or furnace. Thus, viewing the furnace end-on, the outer port or entry will spew its fluid near and onto the walls of the precombustion chamber while the inner port or entry will deliver its gases to a point nearer the longitudinal axis.Type: GrantFiled: November 3, 1978Date of Patent: September 2, 1980Assignee: Phillips Petroleum CompanyInventor: Oliver K. Austin
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Patent number: 4208373Abstract: A reactor-tube assembly for a high-temperature, fluid-wall reactor comprises a reactor tube made of a fabric of a fibrous, refractory material, two support rings positioned at the ends of the reactor tube, and means for securing the ends of the reactor tube to the support rings. Carbon or graphite cloth is a preferred fibrous refractory material out of which to make the reactor tube.Type: GrantFiled: August 20, 1975Date of Patent: June 17, 1980Assignee: Thagard Technology CompanyInventor: Edwin Matovich
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Patent number: 4206175Abstract: In an aspiration chamber of a carbon black reactor, the discharge end of a hydrocarbon inlet and the aspiration inlet of a hydrocarbon reaction section are arranged in such a proximate relationship that the hydrocarbon feed entering from said inlet into said reaction section aspirates surrounding hot combustion gases. The aspiration chamber has a wall converging from the end to which the reaction section is attached towards the end to which the hydrocarbon inlet is attached. Inlets for the combustion gases comprising coal are provided for the tangential feed of the combustion gases into the annulus formed between the reaction section and the converging wall of the aspiration chamber. At least one ash outlet for discharging the ash from the chamber is arranged upstream of the discharge end of the hydrocarbon feed means.Type: GrantFiled: December 15, 1977Date of Patent: June 3, 1980Assignee: Phillips Petroleum CompanyInventor: Paul J. Cheng
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Patent number: 4199545Abstract: A fluid-wall reactor for high temperature chemical reactions is described, the reactor comprising (A) a porous reactor tube, at least a portion of the interior of which defines a reaction zone, the tube being made of a fabric of a fibrous refractory material; (B) a pressure vessel enclosing the reactor tube to define an inert fluid plenum, the pressure vessel having at least one inlet for admitting the inert fluid which is directed under pressure through the porous tube wall to provide a protective blanket for the inside surface of the reactor tube; (C) means for introducing at least one reactant into the reaction zone, the reactants being directed in a predetermined path axially of the reactor tube and being confined by the protective blanket substantially centrally within the reaction zone; (D) means disposed within the plenum for heating the reactor tube to the temperature level at which it emits sufficient radiant energy to initiate and sustain the desired chemical reaction, the radiant energy being direcType: GrantFiled: May 2, 1977Date of Patent: April 22, 1980Assignee: Thagard Technology CompanyInventor: Edwin Matovich
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Patent number: 4195068Abstract: Carbon black low in coke and grit is produced at a higher hourly rate and higher yield per unit of oil employed in a furnace black reactor using a burner-injector combination for the production of heat energy and for the injection of very fine drops of carbon forming material (feed/stock) by a process which uses a reactor with a restriction mixing the liquid carbon black forming material supplied through an inner tube of the burner-injector combination with a gaseous atomizing medium supplied from a jacket tube surrounding this inner tube, the jacket tube being conically tapered before an exit nozzle, said mixing occurring just before the exit nozzle, the outermost fuel gas jacket being so provided with relatively few gas openings that the fuel gas pressure at the burner amounts to over 1.5 atmospheres absolute and the fuel gas exit speed is over 320 meters per second.Type: GrantFiled: December 27, 1978Date of Patent: March 25, 1980Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals RoesslerInventors: Lothar Rothbuhr, Gehard Kuhner, Gunther Dittrich
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Patent number: 4179494Abstract: Furnace black is produced by a thermal splitting of a carbon black forming oil by oxidation of a fuel in a combustion chamber with production of a stream of hot combustion gases, introduction of this stream in a constricted mixing chamber narrower than the fuel chamber, inserting the carbon black forming material into the mixing chamber and conveying the mixture into an enlarged reaction chamber compared to the mixing chamber as well as quenching the carbon black containing reaction mixture, the stream of hot combustion gases being introduced into the mixing chamber via an annular channel or introducing the stream into an annular channel shaped mixing chamber and spraying in the carbon black forming material into the mixing chamber or ring conduit from within outwardly.Type: GrantFiled: June 25, 1976Date of Patent: December 18, 1979Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals RoesslerInventors: Lothar Rothbuhr, Manfred Voll
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Patent number: 4138217Abstract: A carbon black reactor is comprised of a housing which defines a precombustion zone, a reaction zone and a quench zone which are in flow communication. Inlet means open into the precombustion zone or the reaction zone and is operable to introduce make hydrocarbon into the reactor. Also, inlet means open into the precombustion zone and is operable for the introduction of hot combustion gases into the precombustion zone. The make hydrocarbon is pyrolyzed by contact with the hot combustion gases as same flow along the reaction zone. After a predetermined time as determined by the length of flow along the reaction zone, the effluent produced by the pyrolysis of the make hydrocarbon by contact with the combustion gases is quenched to stop the reaction.Type: GrantFiled: February 1, 1977Date of Patent: February 6, 1979Assignee: Phillips Petroleum CompanyInventors: John E. Slagel, Allen C. Howard