Patents by Inventor Volker Hessel
Volker Hessel 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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Publication number: 20100136699Abstract: A sample plate, portable analysis apparatus and method of analysing sulphur and/or nitrogen compounds in a sample fluid, the method comprising feeding a sample fluid to a sample plate having a sample inlet, a reaction zone, an analysis zone, and at least one separation zone, the sample plate being adapted to allow; (a) a sample fluid to be fed to the sample plate through the inlet to the reaction zone or optionally to a separation zone, which separation zone separates the sample fluid into two or more fractions at least one of which is fed to the reaction zone; (b) a reactant to be fed to the reaction zone; (c) the reaction zone to be maintained under conditions that enable reaction to occur between the reactant and the sample fluid or fraction thereof to produce a product fluid; and (d) transfer of the product fluid to the analysis zone or optionally to a separation zone in which the product fluid is separated into two or more fractions, at least one of which is transferred to the analysis zone.Type: ApplicationFiled: June 26, 2008Publication date: June 3, 2010Applicant: BP OIL INTERNATIONAL LIMITEDInventors: Klaus-Stefan Drese, Volker Hessel, Christian Hofmann, Tobias Illg, Maria Gabriele Menges, David Tiemann, Athanassios Ziogas
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Patent number: 7097347Abstract: A novel mixing apparatus and process for mixing at least two fluids are disclosed. Excellent mixing and superior pressure drop characteristics are achieved in a device comprising at least two supply channels to feed a mixing chamber and create a vortex. The alignment of the supply channels is such that fluids are introduced into the chamber at both tangential and radial directions. In the case of gas/liquid mixing, particularly advantageous is the injection of the liquid stream tangentially and the gas stream radially. When two liquid streams are mixed, it is desirable to distribute them into fine, interdigitated channels prior to introduction into a supply channel and finally into the chamber. The mixed stream is generally withdrawn from the center of the swirling vortex and in a direction perpendicular to the plane of the vortex.Type: GrantFiled: November 19, 2003Date of Patent: August 29, 2006Assignee: UOP LLCInventors: Kurt M. Vanden Bussche, Suheil F. Abdo, Volker Hessel, Holger Löwe, Steffen Hardt
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Patent number: 6935768Abstract: The invention relates to a procedure and a micromixer for mixing at least two fluids. The aim of the invention is to reduce the mixing time of the micromixer compared to micromixers known to the art while maintaining high mixing quality and small structural dimensions. The inventive procedure is characterized by the following steps: a plurality of separated fluid currents of both fluids are brought together and alternately adjacent fluid lamellae of both fluids are formed: the combined fluid currents are carried away and a focused total fluid current is formed; the focused total fluid current is fed as fluid jet into an expansion chamber; and the resulting mixture is drawn off. The micromixer comprises a plurality of alternately adjacent fluid channels which open into an inlet chamber. A focusing channel is in fluid connection with said inlet chamber and opens into an expansion chamber.Type: GrantFiled: August 23, 2001Date of Patent: August 30, 2005Assignees: Institut fur Mikrotechnik Mainz GmbH, Mikroglas Chemtech GmbHInventors: Holger Löwe, Jōrg Schiewe, Volker Hessel, Thomas Dietrich, Andreas Freitag
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Patent number: 6863867Abstract: A novel apparatus for mixing and reacting at least two fluids are disclosed. Excellent mixing and superior pressure drop characteristics are achieved in a device comprising at least two supply channels to feed a mixing chamber and create a vortex. The alignment of the supply channels is such that fluids are introduced into the chamber at both tangential and radial directions. In the case of gas/liquid mixing, particularly advantageous is the injection of the liquid stream tangentially and the gas stream radially. Reaction of the fluids can take place within the mixing chamber or in a separate reactor in fluid communication with the mixing chamber outlet. The mixer/reactor apparatus is especially useful for reactions where rapid diffusion is critical.Type: GrantFiled: May 7, 2001Date of Patent: March 8, 2005Assignee: UOP LLCInventors: Kurt M. Vanden Bussche, Suheil F. Abdo, Volker Hessel, Holger Löwe, Steffen Hardt
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Publication number: 20040100861Abstract: A novel mixing apparatus and process for mixing at least two fluids are disclosed. Excellent mixing and superior pressure drop characteristics are achieved in a device comprising at least two supply channels to feed a mixing chamber and create a vortex. The alignment of the supply channels is such that fluids are introduced into the chamber at both tangential and radial directions. In the case of gas/liquid mixing, particularly advantageous is the injection of the liquid stream tangentially and the gas stream radially. When two liquid streams are mixed, it is desirable to distribute them into fine, interdigitated channels prior to introduction into a supply channel and finally into the chamber. The mixed stream is generally withdrawn from the center of the swirling vortex and in a direction perpendicular to the plane of the vortex.Type: ApplicationFiled: November 19, 2003Publication date: May 27, 2004Inventors: Kurt M. Vanden Bussche, Suheil F. Abdo, Volker Hessel, Holger Lowe, Steffen Hardt
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Publication number: 20040027915Abstract: The invention relates to a procedure and a micromixer for mixing at least two fluids. The aim of the invention is to reduce the mixing time of the micromixer compared to micromixers known to the art while maintaining high mixing quality and small structural dimensions. The inventive procedure is characterized by the following steps: a plurality of separated fluid currents of both fluids are brought together and alternately adjacent fluid lamellae of both fluids are formed: the combined fluid currents are carried away and a focused total fluid current is formed; the focused total fluid current is fed as fluid jet into an expansion chamber; and the resulting mixture is drawn off. The micromixer comprises a plurality of alternately adjacent fluid channels (2, 3) which open into an inlet chamber (4). A focusing channel (5) is in fluid connection with said inlet chamber and opens into an expansion chamber (6).Type: ApplicationFiled: July 28, 2003Publication date: February 12, 2004Inventors: Holger Lowe, Jorg Schiewe, Volker Hessel, Thomas Dietrich, Andreas Freitag
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Patent number: 6655829Abstract: A novel mixing apparatus and process for mixing at least two fluids are disclosed. Excellent mixing and superior pressure drop characteristics are achieved in a device comprising at least two supply channels to feed a mixing chamber and create a vortex. The alignment of the supply channels is such that fluids are introduced into the chamber at both tangential and radial directions. In the case of gas/liquid mixing, particularly advantageous is the injection of the liquid stream tangentially and the gas stream radially. When two liquid streams are mixed, it is desirable to distribute them into fine, interdigitated channels prior to introduction into a supply channel and finally into the chamber. The mixed stream is generally withdrawn from the center of the swirling vortex and in a direction perpendicular to the plane of the vortex.Type: GrantFiled: May 7, 2001Date of Patent: December 2, 2003Assignee: UOP LLCInventors: Kurt M. Vanden Bussche, Suheil F. Abdo, Volker Hessel, Holger Löwe, Steffen Hardt
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Publication number: 20030100792Abstract: Process for preparing arylboron and alkylboron compounds of the formulae (II) and (III) by reacting arylmagnesium and alkylmagnesium halides of the formula (I) with boron compounds in microreactors in accordance with equation I or equation II, 1Type: ApplicationFiled: August 1, 2002Publication date: May 29, 2003Applicant: Clariant GmbHInventors: Manfred Koch, Detlef Wehle, Stefan Scherer, Klaus Forstinger, Andreas Meudt, Volker Hessel, Bernd Werner, Holger Lowe
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Publication number: 20030039169Abstract: Micromixers constitute a main component of microreactors that have three-dimensional microstructures in a fixed matrix, in which chemical reactions take place. In said micromixer, fluids from their respective supply chambers are divided into spatially separated fluid streams using a network of microchannels allocated to the respective streams. Said streams then emerge as jets with identical volumetric flows for each fluid into a mixing chamber. The invention aims to ensure that identical volumetric flows are achieved for each fluid at the respective microchannel outflow and to produce a micromixer with a simple, compact construction. Wedge-shaped plates can be used as the supply elements (2a-d). Said plates can be assembled to form at least one ring sector which surrounds the mixing chamber (5) in the form of a curve.Type: ApplicationFiled: August 27, 2002Publication date: February 27, 2003Inventors: Wolfgang Ehrfeld, Volker Hessel
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Publication number: 20020187090Abstract: A novel apparatus for mixing and reacting at least two fluids are disclosed. Excellent mixing and superior pressure drop characteristics are achieved in a device comprising at least two supply channels to feed a mixing chamber and create a vortex. The alignment of the supply channels is such that fluids are introduced into the chamber at both tangential and radial directions. In the case of gas/liquid mixing, particularly advantageous is the injection of the liquid stream tangentially and the gas stream radially. Reaction of the fluids can take place within the mixing chamber or in a separate reactor in fluid communication with the mixing chamber outlet. The mixer/reactor apparatus is especially useful for reactions where rapid diffusion is critical.Type: ApplicationFiled: May 7, 2001Publication date: December 12, 2002Inventors: Kurt M. Vanden Bussche, Suheil F. Abdo, Volker Hessel, Holger Lowe, Steffen Hardt