Patents by Inventor Dietrich Wagener
Dietrich Wagener 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: 5259932Abstract: According to the invention the heating system for regenerative coke oven batteries that can be heated with rich gas and/or lean gas or mixed gas is provided comprising vertical flues cooperating in pairs, each vertical flue being connected to a regenerator for preheating the air and, in the case of lean gas operation, for preheating the lean gas or mixed gas. High and low combustion stages, as well as structure defining an internal flue gas return at levels above a flue base are provided. Discharge openings are provided at at least three levels for supplying each flue. A base discharge opening is provided at the flue base directly connected to regenerators. Hollow communicating channels are defined for connecting the regenerators to discharge openings located above the flue base. The hollow communicating channels are preferably formed in each communicating wall connected to a discharge opening leading only to one adjacent flue.Type: GrantFiled: November 22, 1991Date of Patent: November 9, 1993Assignees: Didier Ofu Engineering GmbH, Krupp Koppers GmbH, Still Otto GmbHInventors: Manfred Blase, Ulrich Kochanski, Dietrich Wagener, Gunther Meyer, Heinz Durselen, Dieter Stalherm, Joachim Hoitz, Ludwig Offermann, Jurgen Tietze
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Patent number: 4734165Abstract: Coke is produced from coal by coking the coal, and optionally by drying and/or preheating the coal prior to coking, and further optionally by dry cooling the coke subsequent to coking. At least the coking step is achieved in a pressure tight container which may be a transportable or tippable container. The coking step is performed in the container by conducting a gas through the container in direct or indirect heat exchange relationship with the coal and forming coke. The coking step includes a phase of lump coke formation achieved by heating the coal in a temperature range of between approximately 250.degree. and 600.degree. C. by indirect heat exchange only.Type: GrantFiled: May 6, 1986Date of Patent: March 29, 1988Assignee: Didier Engineering GmbHInventors: Hartmut Bauer, Dietrich Wagener, Egmar Wunderlich
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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: 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: 4512080Abstract: The amount of flexure of a heating wall of a coke oven is determined during operation of the coke oven by providing an observation hole through the oven roof into a heating flue, the observation hole having an axis. On at least one of the binder walls defining the heating flue is formed a vertical measuring strip extending throughout substantially the entire height of the binder wall at a position to be visible through the observation hole. The measuring strip defines, prior to heating during operation of the coke oven, a rectilinear reference line extending parallel to and spaced from the axis of the observation hole. Upon operation of the coke oven, during which time the heating wall is heated and flexes, the degree of such flexure is determined by measuring through the observation hole the extent of deviation of the measuring strip from the reference line.Type: GrantFiled: November 3, 1983Date of Patent: April 23, 1985Assignee: Didier Engineering GmbHInventors: Dietrich Wagener, Manfred Blase
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Patent number: 4447333Abstract: A process for the elimination of ammonia in waste waters from a coke oven battery wherein ammonia-containing waste water or ammonia-containing vapor obtained by means of ammonia separation from the waste water are mixed with flue gas from the coke oven battery and sprayed into a NO.sub.x reactor at an elevated temperature with the resulting mixture being subjected to a catalytic redox reaction.Type: GrantFiled: January 12, 1983Date of Patent: May 8, 1984Assignee: Didier Engineering GmbH.Inventors: Dietrich Wagener, Theo Sander, Karl H. Laue
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Patent number: 4444532Abstract: Small, pourable particles of comminuted coal for coking purposes are gravity-discharged into a stream of hot gas flowing upwardly in a flight stream tube, in a direction inclined and generally opposite to the gas flow direction. Just prior to entry into the gas stream the particles are fluidized so that, on being entrained by the gas stream, they will become uniformly distributed throughout the cross-section of the same. A method and an apparatus are disclosed.Type: GrantFiled: September 20, 1982Date of Patent: April 24, 1984Assignees: Bergwerksverband GmbH, Didier Engineering GmbHInventors: Erich Hackler, Joachim Meckel, Dietrich Wagener, Manfred Galow
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Patent number: 4407701Abstract: Apparatus for treating gases produced from the conversion of coal, e.g., from carbonization of coal, to remove the undesirable constituents thereof is disclosed. The method involves passing the hot raw gases from the coal conversation process over a coke bed at a temperature of more than 1100.degree. K. The coke bed is located in the coal gasification reactor and is provided with an ordinary air supply. The subject method achieves a significant reduction in undesirable constituents in the gas and eliminates the need for auxiliary gas treatment systems, oxygen production systems and the like.Type: GrantFiled: August 2, 1982Date of Patent: October 4, 1983Assignee: Didier Engineering GmbHInventors: Dietrich Wagener, Horst Fach, Peter Sauder, Otto Abel
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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: 4360976Abstract: A method and apparatus for the dry cooling of coke is disclosed wherein a cooling gas is routed through a coke charge by means of a distributor or manifold disposed in the bottom of a vertical cooling chamber. The gas passing upwardly through the coke charge is heated by the hot coke. A temperature sensor is provided in the discharge line for the heated gas from the coke cooling chamber, and the distribution and flow rate of the cooling gas introduced at the bottom of the chamber is controlled thereby to maintain a predetermined temperature of the discharged gas. A further embodiment includes multiple gas discharge lines located at different levels of the coke charge. Since the temperature of the gas discharged varies with the level from which the gas is withdrawn, controlled combination of the various discharge flows provides an additional means for producing and maintaining the predetermined temperature of the combined gas discharge.Type: GrantFiled: January 12, 1981Date of Patent: November 30, 1982Assignee: Didier Engineering GmbHInventors: Joachim Meckel, Horst Joseph, Dietrich Wagener
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Patent number: 4336229Abstract: Apparatus for the production of ammonia synthesis gas by the catalytic cracking of coke oven gas in the presence of water vapor and air is disclosed. The apparatus includes concentric inner and outer pipes, a first annular reaction zone between the pipes and a second reaction zone inside the inner pipe, both zones containing a catalyst. The purified coke oven gas along with air and water vapor is introduced into the interior of the outer pipe, i.e., into the first reaction zone at one end. The gas flows along the length of the pipes and then into the inner pipe, i.e., the second reaction zone, through a number of openings in the end of the inner pipe opposite the end of the outer pipe where the coke oven gas was initially introduced. The gas then flows along the length of the inner pipe to the opposite end where the cracked gas is removed.Type: GrantFiled: October 22, 1980Date of Patent: June 22, 1982Assignee: Didier Engineering GmbHInventors: Egmar Wunderlich, Joachim Meckel, Dietrich Wagener, Stefan Smieskol
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Patent number: 4322269Abstract: A method and apparatus for the wet quenching of coke is disclosed wherein hot coke is sprayed from above with quenching water, the steam generated by the heat of the coke is condensed by a spray of condensation water from the top of the quenching tower, and the hot condensate-water mixture is collected at the bottom of the quenching tower and recirculating to the top of the tower where it is sprayed between quenching operations to be cooled by a counterflowing stream of air. The cooled condensate-water mixture is suitable for reuse as the condensation spray water.Type: GrantFiled: May 14, 1981Date of Patent: March 30, 1982Assignee: Didier Engineering GmbH.Inventors: Dietrich Wagener, Claus Flockenhaus, Manfred Blase
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Patent number: 4308102Abstract: Flue gas discharged from a recuperator or regenerator of a coke oven battery has the steam thereof removed by means of a direct or indirect cooling and condensation operation. After the steam is removed from the flue gas it is then passed through a coke dry cooling plant in direct contact with hot coke therein to form dry cooled coke while simultaneously increasing the temperature of the flue gas. The flue gas is then passed through a coal preheating plant to directly contact and dry and preheat moist coking coal contained therein. The entire system is open, such that a given quantity of the flue gas passes only once through the system. When the temperature of the flue gas as received from a coke oven battery is extremely high, then the flue gas may be subjected to a partial cooling operation prior to the cooling and condensation operation.Type: GrantFiled: February 21, 1980Date of Patent: December 29, 1981Assignee: Didier Engineering GmbHInventors: Dietrich Wagener, Claus Flockenhaus, Joachim F. Meckel
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Patent number: 4289585Abstract: A method and apparatus for the wet quenching of coke is disclosed wherein hot coke is sprayed from above with quenching water, the steam generated by the heat of the coke is condensed by a spray of condensation water from the top of the quenching tower, and the hot condensate-water mixture is collected at the bottom of the quenching tower and recirculating to the top of the tower where it is sprayed between quenching operations to be cooled by a counterflowing stream of air. The cooled condensate-water mixture is suitable for reuse as the condensation spray water.Type: GrantFiled: January 16, 1980Date of Patent: September 15, 1981Assignee: Didier Engineering GmbHInventors: Dietrich Wagener, Claus Flockenhaus, Manfred Blase
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Patent number: 4284476Abstract: A heat carrier gas is passed through a coke dry cooling plant in direct contact with hot coke therein to form dry cooled coke while simultaneously increasing the temperature of the heat carrier gas. The heat carrier gas is then passed through a coal preheating plant to directly contact and dry and preheat moist coking coal contained therein. The entire system is open, such that a given quantity of the heat carrier gas passes only once through the dry cooling plant and the coal drying and preheating plant. The heat carrier gas may be a flue gas which is passed directly to the coke dry cooling plant without any preliminary pretreatment, and preferably is a flue gas which is supplied directly from a regenerator or recuperator of a coke oven battery. Alternatively, the heat carrier gas may be in the form of a fuel gas which is inert with respect to the hot coke, for example a waste gas or stack gas supplied from an adjacent metallurgical installation, such as a steel mill.Type: GrantFiled: February 21, 1980Date of Patent: August 18, 1981Assignee: Didier Engineering GmbHInventors: Dietrich Wagener, Claus Flockenhaus, Joachim F. Meckel
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Patent number: 4282066Abstract: Coal, either as coal fines or as coal briquettes, is introduced into a coking chamber and is thereat exposed to microwave radiation to transform the coal into hot coke. Preferably, the microwave radiation is at a frequency of from twenty to 3000 MHz. The hot coke is then passed to a cooling zone whereat photocells absorb radiant energy from the hot coke and transform the thus absorbed radiant energy into electricity.Type: GrantFiled: March 22, 1979Date of Patent: August 4, 1981Assignee: Didier Engineering GmbHInventors: Dietrich Wagener, Horst Fach, Hayri Ergun
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Patent number: 4280033Abstract: Coal, particularly ground coal, is thermally treated at a treatment zone by exposing the coal to microwave radiation, preferably at a frequency of from 20 to 3,000 MHz. The treatment zone may be a system for forming the coal into pellets or briquettes. The treatment zone may also be an area between a coal supply bin and a furnace or oven for utilization of the coal, whereby the coal is dried and/or preheated before use in the furnace or oven.Type: GrantFiled: March 22, 1979Date of Patent: July 21, 1981Assignee: Didier Engineering GmbHInventors: Dietrich Wagener, Fach Horst, Hayri Ergun
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Patent number: 4246071Abstract: This invention is directed to a process for making coke and recovering the heat therefrom for preheating the firing gas to the coke oven. The process involves the use of the coke oven firing gas to extract the sensible heat from the hot coke from the coking oven to both preheat the firing gas for the coke oven and cool the hot coke. Significant economies are achieved in the two-fold function of coke production and heat recovery in accordance with the method disclosed.Type: GrantFiled: April 16, 1979Date of Patent: January 20, 1981Assignee: Didier Engineering GmbHInventors: Dietrich Wagener, Claus Flockenhaus, Joachim F. Meckel
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Patent number: 4235624Abstract: Hot coke oven gas is subjected, immediately after the discharge thereof from coke ovens, and without any preliminary cooling operation, to partial oxidation and cracking with an oxygen-containing gas, thereby forming a hot cracked gas rich in carbon monoxide and hydrogen. The hot coke oven gas may be subjected to a desulfurization operation prior to the partial oxidation and cracking. Alternatively, the hot cracked gas may be subjected to a desulfurization operation after the partial oxidation and cracking. When the coke ovens are part of an overall metallurgical installation which includes an air separation and dissociation plant for obtaining substantially pure oxygen, the oxygen-containing gas employed in the partial oxidation and cracking may comprise oxygen enriched gas which is taken from an intermediate stage of the air separation and dissociation plant.Type: GrantFiled: July 27, 1978Date of Patent: November 25, 1980Assignee: Didier Engineering GmbHInventors: Dietrich Wagener, Claus Flockenhaus, Joachim F. Meckel