Patents by Inventor Jorg Schmalfeld
Jorg Schmalfeld 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: 7677788Abstract: The aim of the invention is to improve an existing mixing device in such a manner that for a predetermined reactor length, retention time is increased and the material which is to be processed is transported at essentially the same speed irrespective of the radial distance thereof from the rotational axis. As a result, at least one row of blades is arranged on each shaft and each row of blades comprises at least two individual blades and the blades are fixed to the shaft at an incidence angle ? in relation to the longitudinal axis of the shaft. The blades are curved in themselves, such that the blades form an angle of incidence ? at the fixing point on the shaft and an angle of incidence ? on the outer diameter DA.Type: GrantFiled: April 5, 2004Date of Patent: March 16, 2010Assignee: Lurgi Lentjes AGInventors: Hans-Jürgen Weiss, Udo Zentner, Burghard Neumann, Jörg Schmalfeld
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Publication number: 20060181959Abstract: The aim of the invention is to improve an existing mixing device in such a manner that for a predetermined reactor length, retention time is increased and the material which is to be processed is transported at essentially the same speed irrespective of the radial distance thereof from the rotational axis. As a result, at least one row of blades is arranged on each shaft and each row of blades comprises at least two individual blades and the blades are fixed to the shaft at an incidence angle ? in relation to the longitudinal axis of the shaft. The blades are curved in themselves, such that the blades form an angle of incidence ? at the fixing point on the shaft and an angle of incidence ? on the outer diameter DA.Type: ApplicationFiled: April 5, 2004Publication date: August 17, 2006Applicant: Lurgi Lentjes AGInventors: Hans-Jurgen Weiss, Udo Zentner, Burghard Neumann, Jorg Schmalfeld
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Patent number: 6469203Abstract: The present invention relates to a process of recovering monomeric esters of substituted or unsubstituted acrylic acid from polymer material having corresponding structural units by depolymerization by means of a fine-grained heat-transfer medium which is maintained above the depolymerization temperature of the polymer material. In a reactor, the polymer material is brought in contact with hot, mechanically fluidized heat-transfer medium. The resulting vapors are withdrawn and condensed, where the hot heat-transfer medium is continuously supplied at one end of the reactor, and cooled heat-transfer medium is discharged at the other end.Type: GrantFiled: June 21, 2001Date of Patent: October 22, 2002Assignees: Metallgesellschaft Aktiengesellschaft, Rohm GmbH Chemische FabrikInventors: Hans-Jürgen Weiss, Jörg Schmalfeld, Udo Zentner, Tobias Groschang, Udo Gropp, Werner Fuss, Ralf Goedecke, Egbert Schöla
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Patent number: 6413415Abstract: High temperature flash distillation, for treating residual oils originating from crude oil refining, natural bitumen and/or tar sands, comprises feeding the oil to a mixer with granular hot coke, which serves as a thermal transfer medium. In mixing, 60-90% of the oil is vaporized. The non-vaporized fraction includes metal-containing asphaltenes. This fraction is further converted in the mixer, to oil vapor, gas and coke. Gases and vapor are withdrawn from the mixer, separately from the coke. The vapor phase is cooled and condensed to produce product oil. The gas itself is a further product. The coke is reheated and recycled to the mixer as the thermal transfer medium.Type: GrantFiled: January 3, 2000Date of Patent: July 2, 2002Assignee: Metallgesellschaft AktiengesellschaftInventors: Hans Jürgen Weiss, Jörg Schmalfeld, Udo Zentner, Ingo Dreher, Willibald Serrano
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Patent number: 5584970Abstract: The biomass, particularly lump wood, is supplied to a shaft reactor at its top and is initially preheated to temperatures of about 150.degree. to 280.degree. C. and dried by a counterflowing hot gas. This is followed by a treatment in an underlying carbonizing zone, the upper portion of which is supplied with hot purging gas at a temperature of 250.degree. to 600.degree. C. The hot purging gas flows downwardly through the carbonizing zone co-currently with the wood. A gas mixture which contains purging gas and gas produced by carbonization is withdrawn from the lower portion of the carbonizing zone and is at least in part combusted outside the shaft reactor to produce a combustion gas, which is used at least in part as hot purging gas.Type: GrantFiled: March 7, 1995Date of Patent: December 17, 1996Assignee: Metallgesellschaft AktiengesellschaftInventors: Jorg Schmalfeld, Hans J. Eichwald, Udo Zentner
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Patent number: 4935099Abstract: Lump wood is carbonized in a shaft retort, which is flown through by hot rinse gas. The wood is charged to the retort at its top. Wood charcoal is withdrawn from the lower portion of the retort. An exhaust gas which contains gases and vapors produced by carbonization is withdrawn from the top end of the shaft retort and is directly fed to a combustion chamber. In a first section of the combustion chamber, the exhaust gas is combusted with air at an understoichiometric to stoichiometric rate at temperatures from 800.degree. to 1250.degree. C. Part of the combustion gas is withdrawn from that first section of the combustion chamber and is cooled to temperatures from about 450.degree. to 900.degree. C. and is fed as a rinse gas to the shaft retort. In a second section of the combustion chamber, the exhaust gas is completely combusted with air supplied at an overstoichiometric rate.Type: GrantFiled: June 19, 1989Date of Patent: June 19, 1990Assignee: Metallgesellschaft AktiengesellschaftInventors: Hans-Jurgen Weiss, Jorg Schmalfeld, Ingo Dreher, Johannes Arnhold
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Patent number: 4659456Abstract: Oil-containing solids are dried and heated by contacting them in a drying zone with superheated steam admitted to the zone at a temperature in excess of 200.degree. C. The heated solids may be distilled to remove hydrocarbons therefrom and the resulting proceduce and/or combustion products of the distillation or other combustion products are used to heat a mixed vapor remainder, after separation of said carbon from the vapors formed during the drying, to the temperature of 1200.degree. C. for recirculation to the drying zone.Type: GrantFiled: September 26, 1985Date of Patent: April 21, 1987Assignee: Metallgesellschaft AgInventors: Roland Rammler, Hans J. Weiss, Ingo Dreher, Jorg Schmalfeld, Karl-Heinz Bietz
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Patent number: 4408548Abstract: A burner combines air cooling and pulverized coal combustion with air for the combustion of low inflammability coals. A ceramic lining protects the cooled steel mantel of the burner while supplying heat for sustained combustion process. Air preheated in the cooling process is used to preheat the coal and to supply secondary air imparting a helical trajectory to the coal particles close to the ceramic lining. The ceramic lining is formed in situ around the flame chamber from molded plastic ceramic hardened by burner operation.Type: GrantFiled: December 8, 1980Date of Patent: October 11, 1983Inventors: Jorg Schmalfeld, Werner Bruckner, Jorn Jacobs, H. S. Greulich, A. Schlutter