Patents by Inventor Stephen R. Dunne
Stephen R. Dunne 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: 8936727Abstract: The systems and processes disclosed herein relate generally to multi bed temperature controlled adsorption for use in the recovery of sorbates that are removed from process streams by adsorption. Multi bed temperature controlled adsorber systems can include three or more temperature controlled adosrbers that operate in parallel. Each temperature controlled adsorber through a series of steps including an adsorption step, a first bed to bed interchange, a regeneration step, and a second bed to bed interchange.Type: GrantFiled: March 6, 2009Date of Patent: January 20, 2015Assignee: UOP LLCInventors: Stephen R. Dunne, David A. Wegerer
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Patent number: 8323747Abstract: The present invention provides a process for applying a coating on a heat exchanger or a temperature controlled adsorber surface. This coating comprises a zeolite, an organic solvent, an organic siloxane resin that constitutes a binder and a plasticizing agent.Type: GrantFiled: June 14, 2011Date of Patent: December 4, 2012Assignee: UOP LLCInventors: Stephen R. Dunne, Pamela J. Dunne, legal representative, Alexander M. Bershitsky, Mariola J. Proszowski
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Patent number: 8226746Abstract: Systems and processes are provided that relate to the recovery of sorbates in processes utilizing temperature controlled adsorption. Sorbate recovery can include providing a temperature controlled adsorber that is undergoing a regeneration cycle after undergoing an adsorption cycle. The temperature controlled adsorber can have one or more adsorption flow passages and one or more heat transfer flow passages. The one or more adsorption flow passages can contain an adsorptive material coating with a sorbate adsorbed thereto. A heating fluid can be provided to the one or more heat transfer flow passages of the temperature controlled adsorber. A regeneration stream can be provided to the one or more adsorption flow passages of the temperature controlled adsorber. The adsorptive material coating can be regenerated by removing the sorbate from the temperature controlled adsorber to produce a regeneration effluent stream.Type: GrantFiled: September 8, 2009Date of Patent: July 24, 2012Assignee: UOP LLCInventors: Stephen R. Dunne, David A. Wegerer
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Patent number: 8227648Abstract: Systems and processes for dehydration of a process stream in the production of motor fuel grade ethanol (MFGE) can include temperature controlled adsorption of water in the process stream, and heat pumping to transfer heat from the process stream to a heat sink using one or more stages of heat pumping. One stage of heat pumping can be achieved during the regeneration process of a temperature controlled adsorber by desorbing the adsorbed water at a thermal condition enabling useful heat recovery. Another stage of heat pumping can be achieved during the adsorption process of a temperature controlled adsorber by transferring the heat of water adsorption to a heat sink. The heat sink with respect to each stage of heat pumping can be a solids separation unit, such as a beer column.Type: GrantFiled: September 8, 2009Date of Patent: July 24, 2012Assignee: UOP LLCInventors: David A. Wegerer, Stephen R. Dunne
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Publication number: 20110319673Abstract: The present invention provides a process for applying a coating on a heat exchanger or a temperature controlled adsorber surface. This coating comprises a zeolite, an organic solvent, an organic siloxane resin that constitutes a binder and a plasticizing agent.Type: ApplicationFiled: June 14, 2011Publication date: December 29, 2011Applicant: UOP LLCInventors: Stephen R. Dunne, Pamela J. Dunne, Alexander M. Bershitsky, Mariola J. Proszowski
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Publication number: 20110290111Abstract: The present invention provides a process for treating a natural gas stream comprising sending a natural gas stream to at least one membrane unit to produce a permeate stream containing a higher concentration of carbon dioxide and a retentate stream containing a lower concentration of carbon dioxide. Then the retentate stream is sent to an adsorbent bed to remove carbon dioxide and other impurities to produce a natural gas product stream. The regeneration gas stream is sent through the molecular sieve adsorbent bed to desorb the carbon dioxide. In one process flow scheme, the regeneration stream is combined with the permeate stream from the membrane unit. Then the combined stream is sent to an absorbent column to remove carbon dioxide from the permeate stream to produce a second natural gas product stream. In the alternative flow scheme, a second membrane unit is used to improve efficiency.Type: ApplicationFiled: May 3, 2011Publication date: December 1, 2011Applicant: UOP LLCInventors: Stephen R. Dunne, Pamela J. Dunne, Lubo Zhou, Peter K. Coughlin
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Patent number: 8067646Abstract: Systems and processes for dehydration of a process stream in the production of motor fuel grade ethanol (MFGE) can include temperature controlled adsorption of water in the process stream, and heat pumping of the associated heat of adsorption. The process can include providing a process stream (110) including ethanol and water to a first temperature controlled adsorber (102) where water is removed by adsorption to produce an MFGE product stream (114) and an associated heat of adsorption. A cooling fluid can be provided to the first temperature controlled adsorber (102) to remove heat of adsorption and produce a heated cooling fluid (120). Heat from the heated cooling fluid can be provided to a heat sink.Type: GrantFiled: December 17, 2008Date of Patent: November 29, 2011Assignee: UOP LLCInventors: David A. Wegerer, Stephen R. Dunne
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Patent number: 7795479Abstract: Systems and processes for dehydration of a process stream in the production of motor fuel grade ethanol (MFGE) can include temperature controlled adsorption of water in the process stream, and heat pumping of the associated heat of adsorption. The process includes providing a process stream including ethanol and water to a first temperature controlled adsorber where water is removed by adsorption to produce a MFGE product stream and an associated heat of adsorption. A cooling fluid is provided to the first temperature controlled adsorber to remove heat of adsorption and produce a heated cooling fluid. Heat from the heated cooling fluid is provided to a heat sink. A multiple step regeneration cycle is provided that allows for increased recovery of MFGE product.Type: GrantFiled: December 15, 2009Date of Patent: September 14, 2010Assignee: UOP LLCInventors: David A. Wegerer, Stephen R. Dunne
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Publication number: 20100224565Abstract: The systems and processes disclosed herein relate generally to multi bed temperature controlled adsorption for use in the recovery of sorbates that are removed from process streams by adsorption. Multi bed temperature controlled adsorber systems can include three or more temperature controlled adosrbers that operate in parallel. Each temperature controlled adsorber through a series of steps including an adsorption step, a first bed to bed interchange, a regeneration step, and a second bed to bed interchange.Type: ApplicationFiled: March 6, 2009Publication date: September 9, 2010Inventors: Stephen R. Dunne, David A. Wegerer
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Publication number: 20100150812Abstract: Systems and processes are provided that relate to the recovery of sorbates in processes utilizing temperature controlled adsorption. Sorbate recovery can include providing a temperature controlled adsorber that is undergoing a regeneration cycle after undergoing an adsorption cycle. The temperature controlled adsorber can have one or more adsorption flow passages and one or more heat transfer flow passages. The one or more adsorption flow passages can contain an adsorptive material coating with a sorbate adsorbed thereto. A heating fluid can be provided to the one or more heat transfer flow passages of the temperature controlled adsorber. A regeneration stream can be provided to the one or more adsorption flow passages of the temperature controlled adsorber. The adsorptive material coating can be regenerated by removing the sorbate from the temperature controlled adsorber to produce a regeneration effluent stream.Type: ApplicationFiled: September 8, 2009Publication date: June 17, 2010Applicant: UOP LLCInventors: Stephen R. Dunne, David A. Wegerer
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Publication number: 20100132254Abstract: Systems and processes for dehydration of a process stream in the production of motor fuel grade ethanol (MFGE) can include temperature controlled adsorption of water in the process stream, and heat pumping of the associated heat of adsorption. The process can include providing a process stream (110) including ethanol and water to a first temperature controlled adsorber (102) where water is removed by adsorption to produce an MFGE product stream (114) and an associated heat of adsorption. A cooling fluid can be provided to the first temperature controlled adsorber (102) to remove heat of adsorption and produce a heated cooling fluid (120). Heat from the heated cooling fluid can be provided to a heat sink.Type: ApplicationFiled: December 17, 2008Publication date: June 3, 2010Inventors: David A. Wegerer, Stephen R. Dunne
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Publication number: 20100137657Abstract: Systems and processes for dehydration of a process stream in the production of motor fuel grade ethanol (MFGE) can include temperature controlled adsorption of water in the process stream, and heat pumping to transfer heat from the process stream to a heat sink using one or more stages of heat pumping. One stage of heat pumping can be achieved during the regeneration process of a temperature controlled adsorber by desorbing the adsorbed water at a thermal condition enabling useful heat recovery. Another stage of heat pumping can be achieved during the adsorption process of a temperature controlled adsorber by transferring the heat of water adsorption to a heat sink. The heat sink with respect to each stage of heat pumping can be a solids separation unit, such as a beer column.Type: ApplicationFiled: September 8, 2009Publication date: June 3, 2010Applicant: UOP LLCInventors: David A. Wegerer, Stephen R. Dunne
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Publication number: 20100132548Abstract: A process for dehydration of a water rich stream, the process comprising providing a process stream to a first temperature controlled adsorber that is undergoing adsorption, where the first temperature controlled adsorber has one or more adsorption flow passages containing an adsorptive material coating and one or more heat transfer flow passages and producing a dehydrated effluent stream. The process stream is passed through the one or more adsorption flow passages, where water is adsorbed by the adsorptive material coating, and a heat of adsorption is generated. The heat of adsorption is removed by passing a cooling fluid through the one or more heat transfer flow passages. The process stream can be a process stream for producing motor fuel grade ethanol.Type: ApplicationFiled: December 17, 2008Publication date: June 3, 2010Inventors: Stephen R. Dunne, David A. Wegerer
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Patent number: 7326277Abstract: The invention comprises a temperature swing adsorption system for providing dry air to an air brake system. More particularly, there is provided a desiccant wheel upstream of the air compressor to dry air prior to its compression.Type: GrantFiled: April 14, 2004Date of Patent: February 5, 2008Assignee: UOP LLCInventors: Alan P. Cohen, Stephen R. Dunne, Rustam H. Sethna
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Publication number: 20080023181Abstract: An adsorption heat exchanger may comprise a stack of alternating adsorption layers and heat transfer layers. Separator plates may separate the adsorption layers from the heat transfer layers. The adsorption layer may include a first corrugated sheet positioned between and brazed to the adsorption zone facing side of two separator sheets. The first corrugated sheet and the exposed portions of the adsorption zone facing side of the separator sheets may be coated with an adsorptive material. The heat transfer layer may include a second corrugated sheet positioned between and brazed to the heat transfer zone facing side of two separator sheets. The second corrugated sheet may be oriented about 90° to the first corrugated sheet.Type: ApplicationFiled: July 31, 2006Publication date: January 31, 2008Applicant: HONEYWELL INTERNATIONAL INC.Inventors: STEPHEN R. DUNNE, ALEXANDER M. BERSHITSKY
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Patent number: 7166149Abstract: Using a high pressure rotary adsorbent wheel, a high value compressed gas feed can be purified by concentrating the impurity such as water, condensing it out, before final purification. Instead of exhausting gas from the system, the effluent can be put back into the feed at a point prior to condensation of the high value gas feed, and therefore the entire feed is purified without any high value gas feed going into a waste stream.Type: GrantFiled: January 12, 2004Date of Patent: January 23, 2007Assignee: UOP LLCInventors: Stephen R. Dunne, Peter K. Coughlin, Rustam H. Sethna
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Patent number: 7033421Abstract: A device is disclosed for cooling motors that generate heat during operation. The device is more specifically directed to handheld power tools where long operation can lead to overheating of the handheld tool.Type: GrantFiled: January 17, 2003Date of Patent: April 25, 2006Assignee: UOP LLCInventors: Suzanne E. Smith, Gavin P. Towler, Stephen R. Dunne, Anil R. Oroskar, Kurt M. Vanden Bussche, Lin Li
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Patent number: 7022229Abstract: An apparatus is presented for separating chemicals using adsorption separation methods. The apparatus uses a plurality of adsorption units holding adsorbent, where the adsorption units are serially connected and are moved to shift the relative position of the feeds and drawoffs to the apparatus.Type: GrantFiled: December 19, 2003Date of Patent: April 4, 2006Assignee: UOP LLCInventors: Gavin P. Towler, Stephen R. Dunne, Robert T. Sprague
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Patent number: 6973963Abstract: This invention provides a compact heat exchanger that has an effective geometry for heat transfer operations regardless of the heat conductivity of the material chosen for the fin materials. It has further been found that the use of adsorbent coated anodized aluminum for fin materials provides for a very efficient heat exchanger.Type: GrantFiled: November 15, 2004Date of Patent: December 13, 2005Assignee: UOP LLCInventors: Stephen R. Dunne, Steven A. Bradley
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Publication number: 20040231828Abstract: This invention provides a compact heat exchanger that has an effective geometry for heat transfer operations regardless of the heat conductivity of the material chosen for the fin materials. It has further been found that the use of adsorbent coated anodized aluminum for fin materials provides for a very efficient heat exchanger.Type: ApplicationFiled: May 22, 2003Publication date: November 25, 2004Inventors: Stephen R. Dunne, Steven A. Bradley