Patents by Inventor Claus Flockenhaus
Claus Flockenhaus has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4950473Abstract: Apparatus and method for reducing nitrogen oxides in flue gas within a flue gas duct includes a number of distributor tubes for the injection of a reducing agent into the flue gas within the duct. Each distributor tube includes a control valve to be able to set an appropriate injection of the reducing agent to respond to different concentrations of the nitrogen oxides within the flue gas over the cross section of the flue gas duct. Each distributor tube comprises at least two parallel distributor tube segments which extend from opposite sides of the flue gas duct to the center of the flue gas duct. The two parallel distribution tube segments include a plurality of openings along the lengths thereof to supply the reducing agent generally evenly throughout their aligned portions of the cross section.Type: GrantFiled: October 27, 1988Date of Patent: August 21, 1990Assignees: Didier Engineering GmbH, Didier-Werke AGInventors: Claus Flockenhaus, Manfred Galow, Klaus Merkel, Hans-Eugen Buhler, Hartmut Kainer
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Patent number: 4935392Abstract: This invention relates to a process for the manufacture of catalysts for the reduction of oxides of nitrogen from exhaust gases and in chemical air cleaning processes in which a catalytically active material containing iron ores, chromium ores and/or zeolite is placed in contact with a carrier means having a series of openings; e.g., wire mesh, expanded or perforated metal or any type of grid-like structure to form a catalytic member. The carrier means is etched with an acid etchant before forming the catalytic member or, instead, the catalytic member is etched with an acid etchant. The catalytic member is bonded by a thermal treatment; e.g., drying, tempering and/or fixing. This invention also relates to catalytic members or products produced by the process. This invention proposes the use of pressure bonding to obtain a catalytic member product which has significantly improved catalytic activity, greater mechanical strength and higher resistance to chipping.Type: GrantFiled: March 29, 1989Date of Patent: June 19, 1990Assignees: Didier-Werke AG, Didier Engineering GmbHInventors: Hartmut Kainer, Bernhard Vedder, Daniel Grimm, Wilfried Schnelle, Albert Kleinevoss, Hans-Eugen Buhler, Klaus Merkel, Claus Flockenhaus, Karl-Heinrich Laue, Manfred Galow
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Patent number: 4914073Abstract: A process for the manufacture of catalysts for the reduction of nitrogen oxides in exhaust gases or for chemical air cleaning processes, in which catalyst moldings are produced from a mixture of solid primary materials which include iron oxide or mixtures of iron oxide and chromium oxide and/or manganese oxide, which are reduced to grain sizes less than 2 mm, with the use of inorganic binders and sulfuric acid, and with the possible addition of activating additives, wherein:(a) either the mixture of the solid primary materials is reacted with sulfuric acid, a mixture of sulfuric acid and phosphoric acid or mixtures of sulfuric acid and phosphoric acid containing sulfate, hydrogen sulfate, phosphate or hydrogen phosphate of ammonium, aluminum, iron, vanadium, manganese, molybdenum, chromium, copper and/or cobalt, and moldings are formed from this mixture, or the mixture of the solid primary materials is formed into moldings after the addition of fluid and/or phosphoric acid and/or phosphates, and these moldingType: GrantFiled: August 12, 1988Date of Patent: April 3, 1990Assignees: Didier-Werke AG, Didier Engineering GmbHInventors: Daniel Grimm, Hartmut Kainer, Albert Kleinevoss, Karl-Heinrich Laue, Claus Flockenhaus, Klaus Merkel
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Patent number: 4895821Abstract: This invention relates to a process for the manufacture of catalysts for the reduction of nitrogen oxides in exhaust gases or for chemical air cleaning processes, in which catalyst moldings are produced from iron oxide or mixtures of iron oxide and chromium oxide and/or manganese oxide, which are reduced to grain sizes less than 2 mm, with the use of inorganic binders and sulfuric acid, and with the possible addition of activating additives.Type: GrantFiled: August 12, 1988Date of Patent: January 23, 1990Assignees: Didier-Werke AG, Didier Engineering GmbHInventors: Hartmut Kainer, Eugen Buhler, Daniel Grimm, Wilfried Schenelle, Claus Flockenhaus, Karl-Heinrich Laue, Klaus Merkel
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Patent number: 4828806Abstract: In a process for cleaning a waste gas containing various pollutants, the exhaust gas with the pollutants is introduced directly into a reduction reactor. In the reactor, the pollutants are reduced by ammonia. The catalyst used is iron oxide material or a mixed oxide material of iron oxide and chromium oxide, or a mixture of the mixture material of the mixed oxide material and the iron oxide material.Type: GrantFiled: November 30, 1987Date of Patent: May 9, 1989Assignees: Didier Werke AG, Didier Engineering GmbHInventors: Claus Flockenhaus, Karl H. Laue, Theo Sander, Erich Hackler, Blagoje Levkov, Daniel Grimm, Hartmut Kainer, Hermann Stein
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Patent number: 4771026Abstract: The invention relates to a catalyst in the form of a plate for nitrogen oxide reduction in exhaust gases manufactured by molding granular Cr.sub.2 O.sub.3 or a mixture of granular Fe.sub.2 O.sub.3 with Cr.sub.2 O.sub.3 with phosphoric acid or sulphuric acid as binder, characterized by the fact that a combination is molded of separately prepared mixtures of Cr.sub.2 O.sub.3 or (Fe.sub.2 O.sub.3 +Cr.sub.2 O.sub.3) with phosphoric acid as binder, and of Cr.sub.2 O.sub.3 or (Fe.sub.2 O.sub.3 +Cr.sub.2 O.sub.3) with sulphuric acid as binder.Type: GrantFiled: September 1, 1987Date of Patent: September 13, 1988Assignees: Didier-Werke AG, Didier Engineering GmbHInventors: Hartmut Kainer, Daniel Grimm, Claus Flockenhaus, Karl-Heinrich Laue
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Patent number: 4751212Abstract: The invention relates to a process for the manufacture of a catalyst for the reduction of nitrogen oxides in exhaust gases. The catalyst contains a metal oxide. The catalyst is preferably used for catalytic reduction with ammonia. The process comprises screening a natural goethite iron ore to the required grain size and then treating the ore with sulfuric acid. Subsequently, the goethite iron ore is heated to a temperature which approximately equals the temperature at which it will be used in the catalytic reaction.Type: GrantFiled: December 5, 1986Date of Patent: June 14, 1988Assignees: Didier Engineering GmbH, Didier-Werke AGInventors: Claus Flockenhaus, Erich Hackler, Karl H. Laue, Klaus Merkel, Arnold Max, Werner Stender, Johann Jansen, Hartmut Kainer, Daniel Grimm, Blagoje Levkov
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Patent number: 4746483Abstract: In a process for the manufacture of catalyst moldings a natural raw material containing Fe.sub.2 O.sub.3, Cr.sub.2 O.sub.3 or another such catalyst component such as TiO.sub.2, NbO.sub.2, WO.sub.3, V.sub.2 O.sub.5 or MoO.sub.3 is screened to a grain size equal to or less than approximately 0.25 mm. This screened base mixture is thoroughly blended, and then preferably a concentrated sulphuric acid is added. This mixture of material is then pressed into a molding in a hydraulic press with a pressure of approximately 500 bar to produce the molding.Type: GrantFiled: September 9, 1986Date of Patent: May 24, 1988Assignees: Didier Engineering GmbH, Didier Werke AGInventors: Claus Flockenhaus, Karl-Heinz Laue, Klaus Merkel, Erich Hackler, Johann Jansen, Arnold Max, Werner Stender, Reinhard Kruse, Hartmut Kainer, Daniel Grimm, Blagoje Levkov
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Patent number: 4742036Abstract: The invention relates to catalyst plates for reducing nitrogen oxide in exhaust gases. These plates are molded of granular Fe.sub.2 O.sub.3 catalyst material and a binder. To achieve high activity and strength in the plates, these are molded of a combination of a first mixture comprised of Fe.sub.2 O.sub.3 catalyst material and phosphoric acid as binder, and a second, separately-produced mixture comprised of Fe.sub.2 O.sub.3 catalyst material and sulphuric acid as binder. The plates can also be a molding having layers, which layers have alternate layers of the first and second mixtures.Type: GrantFiled: September 5, 1986Date of Patent: May 3, 1988Assignee: Didier-Werke AGInventors: Claus Flockenhaus, Daniel Grimm, Hartmut Kainer, Karl H. Laue
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Patent number: 4721699Abstract: A structure made from catalyst for use in the separation of nitrogen oxides from combustion exhaust gases which contain dust. The catalytic structure has plates with spaces therebetween to carry a flow of the exhaust gas therethrough. The catalyst is constructed of individual ceramic plates. The abrasion or wear resistance of the plates is chosen such that the dust in the exhaust gases flowing through the spaces abrades the plate surface at a rate which is at least equivalent to the deactivation of the catalyst surface by action of the nitrogen oxides, which constantly provides a fresh catalyst surface for reaction with the nitrogen oxides. The movement of the exhaust gas through the catalytic structure carries the dust and abraded material along with it and out of the structure.Type: GrantFiled: August 27, 1986Date of Patent: January 26, 1988Assignees: Didier-Werke AG, Didier Engineering GmbHInventors: Dietrich Wagener, Karl H. Laue, Egmar Wunderlich, Theo Sander, Claus Flockenhaus, Erich Hackler, Blagoje Levkov, Daniel Grimm, Hartmut Kainer, Hermann Stein
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Patent number: 4720376Abstract: A process for the removal of nitrogen oxides and soot from exhaust gases from machines and combustion installations burning heavy fuel oil by means of free-passage catalysts at increased temperatures with the addition of ammonia into the exhaust gas stream ahead of the catalysts. To make the process mre effective, the soot adhering to the catalyst surfaces is removed by burning it off and/or by friction resulting from the admixture of sand, ash or similar abrasive mixtures into the exhaust gas stream ahead of the catalysts.Type: GrantFiled: May 6, 1986Date of Patent: January 19, 1988Assignees: Didier Engineering GmbH, Didier-Werke AGInventors: Karl H. Laue, Claus Flockenhaus, Erich Hackler, Blagoje Levkov, Daniel Grimm, Hartmut Kainer, Hermann Stein, Hans-Eugen Buhler
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Patent number: 4695559Abstract: A catalyst for use with ammonia for the selective reduction of nitrogen oxides in waste gases. The catalyst comprises a mixture of substances which has high activity and selectivity with regard to nitrogen oxide conversion and high sorption capabilities with regard to ammonia, but low oxidation capabilities with regard to sulfur dioxide, ammonia, or similar substances. The invention also provides a process for the manufacture and use of such catalysts.Type: GrantFiled: February 19, 1986Date of Patent: September 22, 1987Assignees: Didier-Werke AG, Didier Engineering GmbHInventors: Dietrich Wagener, Karl H. Laue, Egmar Wunderlich, Theo Sander, Claus Flockenhaus, Erich Hackler, Biagoje Levkov, Daniel Grimm, Hartmut Kainer, Hermann Stein, Hans-Eugen Buhler, Horst Kalfa, Johann Jansen, Werner Stender, Arnold Max
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Patent number: 4672052Abstract: A catalyst for use in a process for the removal of nitrogen oxides from exhaust gases contaminated with dust in which the process uses ammonia. The catalyst is made of a material which is easily disposable. Furthermore, the catalyst should be completely used up in the catalysis. The catalyst comprises individual ceramic bricks with a porous surface, and passages therethrough for the flow of the exhaust gases. The bricks exhibit a resistance to abrasion which is designed so that the dust of the exhaust gas which flows through the passages erodes the catalyst surface, thereby reactivating the catalyst. The exhaust gas carries the dust and the eroded material along with it.Type: GrantFiled: August 22, 1985Date of Patent: June 9, 1987Assignees: Didier-Werke AG, Didier Engineering GmbHInventors: Dietrich Wagener, Karl H. Laue, Egmar Wunderlich, Theo Sander, Claus Flockenhaus, Erich Hackler, Blagoje Levkov, Daniel Grimm, Hartmut Kainer, Hermann Stein
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Patent number: 4539016Abstract: In methanizing CO and H.sub.2 containing charge gases, the charge gas is passed upwardly through a vertically extending fluidized bed reactor flowing, in turn, through a fluidized bed zone, a dust bed zone and a separation zone. From the separation zone, the gas is conveyed out of the reactor to a point of use. Coolant tubes are positioned in the reactor passing vertically through the fluidized bed zone, the dust bed zone and the separation zone for removing the heat generated in the reaction. An evaporable coolant, preferably water, is circulated through the coolant tubes. In a separate steam drum, the vapor pressure of the coolant is set for maintaining constant the temperature of the vaporizing coolant.Type: GrantFiled: April 24, 1981Date of Patent: September 3, 1985Assignees: Thyssengas G.m.b.H., Didier EngineeringInventors: Claus Flockenhaus, Erich Hackler, Werner Lommerzheim
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Patent number: 4468288Abstract: Moist bulk coal is supplied into a fluidized bed drier into which is introduced a first heat carrier gas to thereby dry the moist coal to form dried coal. The dried coal is discharged from the drier and is transferred to a generally horizontal bulk material conveyor. A second heat carrier gas is injected through the bottom of the bulk material conveyor, thereby transporting the coal generally horizontally and preheating the coal to form preheated coal. The preheated coal is then discharged from the bulk material conveyor and is filled into a selected charging opening of a coke oven battery.Type: GrantFiled: March 16, 1982Date of Patent: August 28, 1984Assignee: Didier Engineering GmbHInventors: Manfred Galow, Claus Flockenhaus, Joachim Meckel, Horst G. Joseph, Gunter Gabriel
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Patent number: 4433066Abstract: A method for the production of high-caloric content gases is disclosed wherein feed gases containing CO and H.sub.2 are passed through at least two consecutive catalytic fluidized bed stages having cooling elements wherein, the feed gases being introduced to the first stage under pressure and to the subsequent stages under a pressure which is less than the pressure of the next preceding stage, and the gas produced from each preceding stage is fed to the next stage as a diluting gas. As a result of using the method of the present invention, one can avoid the necessity of compression of the feed gases in the subsequent reaction stages, thereby decreasing the cost as well as the technical difficulties encountered in the process.Type: GrantFiled: January 19, 1982Date of Patent: February 21, 1984Assignee: Didier Engineering GmbHInventors: Erich Hackler, Claus Flockenhaus, Werner Lommerzheim
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Patent number: 4407699Abstract: A process and apparatus for the dry cooling of coke involves the provision of a vessel having therein first and second zones in full communication with each other. Hot coke from a coking operation is introduced into the first zone and is passed through the first and second zones. Raw coke oven gas from the coking operation is introduced into the first zone, thereby reducing the temperature of the coke, while cleaning the raw coke oven gas to form cleaned coke oven gas. The cleaned coke oven gas is removed from the first zone, cooled, and then directly or indirectly utilized as a heat carrier gas introduced into the second zone to therein further reduce the temperature of the coke. The thereby further cooled coke is removed from the second zone.Type: GrantFiled: November 12, 1981Date of Patent: October 4, 1983Assignee: Didier Engineering GmbHInventors: Claus Flockenhaus, Dietrich Wagener, Erich Hackler, Stefan Smieskol, Manfred Galow, Joachim Meckel, Dieter Breidenbach
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Patent number: 4407974Abstract: A method of catalytic conversion of feed gases, particularly of a low-sulphur gas mixture rich in carbon monoxide and hydrogen, into a product gas mixture containing methane and/or higher hydrocarbons under high pressure includes the step of removing heat of reaction from the catalytic conversion from a reaction zone by feeding both water and steam to form a cooling medium through a pipe coil in the reaction zone. This forms superheated steam in the pipe coil and the superheated steam is then converted into another form of energy, for example in a turbo-generator. Preferably the reaction zone is a fluidized bed. For carrying out this method a reactor is used, which is preferably a fluidized bed reactor and in this reactor the piping system forming the superheater is disposed in the lower part of the reaction zone. The superheater is connected to a feedwater line and to a steam inlet line and a steam turbine is connected to a steam output line leading from the superheater.Type: GrantFiled: April 23, 1982Date of Patent: October 4, 1983Assignees: Thyssengas GmbH, Didier Engineering GmbHInventors: Claus Flockenhaus, Erich Hackler, Werner Lommerzheim
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Patent number: 4373997Abstract: In the process of transferring coke from a coke oven chamber in a battery of coke ovens to a quenching car, the coke is quenched by a water spray from above. The resulting steam is collected in a hood located above and movable with the quenching car and is either exhausted from the hood and conveyed to a condenser or is condensed in the hood with the condensate being collected, cooled and recirculated to provide the water for the quenching and condensing sprays. The apparatus and method of this invention provides for transferring and quenching the coke without emitting harmful gases and dust to the atmosphere.Type: GrantFiled: January 23, 1981Date of Patent: February 15, 1983Assignee: Didier Engineering GmbHInventors: Claus Flockenhaus, Manfred Galow, Joachim F. Meckel, Horst G. Joseph
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Patent number: 4369094Abstract: Superheated steam is continuously made to flow through the housing of a device which conveys coal from a bunker to the charging holes of coke ovens. While no charging takes place, the steam is vented from the housing and condensed. When charging does take place, the steam enters the coke oven with the coal, is then discharged from the coke oven, and thereupon condensed. The pressure of the steam in the housing may be greater than ambient atmospheric pressure and/or the pressure of the coking gas in the oven, to reliably prevent the entry of the air and/or the gas into the housing and thus to avoid the formation of dangerous gas mixtures therein.Type: GrantFiled: December 10, 1981Date of Patent: January 18, 1983Assignees: Bergwerksverband GmbH, Didier Engineering GmbHInventors: Claus Flockenhaus, Gunter Gabriel, Gunter Ziolkowski, deceased, Paul-Heinz Heesen, Joachim F. Meckel, Manfred Galow