With Heat Conservation Or Using Solid Inert Heat Carrier, E.g., Regenerative Furnace, Etc. Patents (Class 585/602)
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Patent number: 11458458Abstract: An OCM catalyst composition characterized by general formula AaLabEcDdOx; wherein A is an alkaline earth metal; wherein E is a first rare earth element; wherein D is a redox agent or a second rare earth element; wherein the first rare earth element and second rare earth element are different; wherein a is 1.0; wherein b is 0.01-10.0; wherein c is 0-10.0; wherein d is 0-10.0; and wherein x balances the oxidation states. The alkaline earth metal is selected from the group consisting of Mg, Ca, Sr, Ba, and combinations thereof. The first rare earth element and the second rare earth element can each independently be selected from the group consisting of Sc, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Y, Tb, Dy, Ho, Er, Tm, Yb, Lu, and combinations thereof. The redox agent is selected from the group consisting of Mn, W, Bi, Sb, Sn, Ce, Pr, and combinations thereof.Type: GrantFiled: March 21, 2018Date of Patent: October 4, 2022Assignee: Sabic Global Technologies, B.V.Inventors: Wugeng Liang, David West, Luanyi Li, Vidya Sagar Reddy Sarsani, Hector Perez, James W. Kauffman
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Patent number: 11446625Abstract: A reaction unit for catalytic conversion of a hydrocarbon or hydrocarbon containing feedstock to a petrochemical mixture, includes a housing; a fluid bed distributor plate located at a bottom of the housing; a regeneration zone and a stripping zone located above the fluid bed distributor plate, in which catalytic particles are housed; a reaction zone located above the stripping zone; and a condensation zone located above the reaction zone, in which a petrochemical product fluid is condensed.Type: GrantFiled: October 24, 2019Date of Patent: September 20, 2022Assignees: KING ABDULLAH UNIVERSITY OF SCIENCE AND TECHNOLOGY, SAUDI ARABIAN OIL COMPANYInventors: Jorge Gascon, Youssef Saih, Jullian Vittenet, Lieven Gevers, Wei Xu, Isidoro Morales, Ola Salah Ali
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Publication number: 20150080627Abstract: Butadiene is formed by dehydrogenation of butenes which are mixed with steam and oxygen then converted to butadiene by oxidative dehydrogenation over a ferritic oxide catalyst, wherein the sensible heat in the oxidative dehydrogenation reaction product is utilized along with heat produced by thermal oxidation of low value volatile products formed to reduce energy requirements and CO2 emissions. Sensible heat is utilized at high temperature for purposes of superheating feed and at somewhat lower temperatures for purposes of vaporizing feed at sequential locations in the process.Type: ApplicationFiled: March 28, 2013Publication date: March 19, 2015Inventors: Liana Caciula, Joseph G. Duff, Elizabeth Ballard, Sirisha Chada, Mark J. Potter
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Patent number: 8754276Abstract: A reverse flow regenerative reactor having first and second zones, each having first and second ends, the first zone having a plurality of channels capable of separately conveying at least two components of a combustible gas mixture, a gas distributor configured for injecting the components of the combustible gas mixture into first zone, a combustion zone including a selective combustion catalyst disposed at or downstream of the second end of said channels for catalyzing combustion, wherein the second zone is positioned and situated to receive a combusted gas mixture. Processes usefully conducted in the reactor are also disclosed.Type: GrantFiled: August 10, 2012Date of Patent: June 17, 2014Assignee: ExxonMobil Research and Engineering CompanyInventors: John Scott Buchanan, Stephen Mark Davis, Frank Hershkowitz, John Slocum Coleman, Seth McConkie Washburn
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Patent number: 8188328Abstract: The present invention is an improved cyclic, endothermic hydrocarbon conversion process and a catalyst bed system for accomplishing the same. Specifically, the improved process comprises reacting a hydrocarbon with a multi-component catalyst bed in such a manner that the temperature within the catalyst bed remains within controlled temperature ranges throughout all stages of the process. The multi-component catalyst bed comprises a reaction-specific catalyst physically mixed with a heat-generating material.Type: GrantFiled: June 27, 2011Date of Patent: May 29, 2012Assignee: Sud-Chemie Inc.Inventors: Vladimir Fridman, Michael A. Urbancic
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Publication number: 20120078026Abstract: There is provided a method for production of a conjugated diene from a monoolefin having four or more carbon atoms by a fluidized bed reaction. The method for production of a conjugated diolefin includes bringing a catalyst in which an oxide is supported on a carrier into contact with a monoolefin having four or more carbon atoms in a fluidized bed reactor in which the catalyst and oxygen are present, wherein the method satisfies the following (1) to (3): (1) the catalyst contains Mo, Bi, and Fe; (2) a reaction temperature is in the range of 300 to 420° C.; and (3) an oxygen concentration in a reactor outlet gas is in the range of 0.05 to 3.0% by volume.Type: ApplicationFiled: September 29, 2010Publication date: March 29, 2012Inventors: Hideo Midorikawa, Hiroyuki Yano, Takashi Kinoshita
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Patent number: 7973207Abstract: The present invention is an improved cyclic, endothermic hydrocarbon conversion process and a catalyst bed system for accomplishing the same. Specifically, the improved process comprises reacting a hydrocarbon with a multi-component catalyst bed in such a manner that the temperature within the catalyst bed remains within controlled temperature ranges throughout all stages of the process. The multi-component catalyst bed comprises a reaction-specific catalyst physically mixed with a heat-generating material.Type: GrantFiled: October 16, 2007Date of Patent: July 5, 2011Assignee: Sud-Chemie Inc.Inventors: Vladimir Fridman, Michael A. Urbancic
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Patent number: 7622623Abstract: An improved dehydrogenation catalyst bed system for olefin production utilizing classical processing techniques is disclosed.Type: GrantFiled: September 2, 2005Date of Patent: November 24, 2009Assignee: Sud-Chemie Inc.Inventors: Vladimir Fridman, Jay S. Merriam, Michael A. Urbancic
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Patent number: 5599510Abstract: Dual-flow chemical reactor cores containing catalytic heat-transfer walls comprising both a gas-impervious material and a suitable catalyst which allows oxidative coupling of methane into higher hydrocarbons, dual-flow reactors having these catalytic heat-transfer walls to control and facilitate simultaneously coupling of methane and cracking of hydrocarbon compounds in separate gas streams, and chemical processes which combine coupling of methane and cracking of hydrocarbon compounds to make olefins in a dual-flow reactor having catalytic heat-transfer walls.Type: GrantFiled: May 23, 1995Date of Patent: February 4, 1997Assignee: Amoco CorporationInventors: Mark P. Kaminsky, George A. Huff, Jr., Narasimhan Calamur, Michael J. Spangler
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Patent number: 5254781Abstract: An olefins process is described which combines cracking of a hydrocarbon feedstock with the coupling of methane using an oxygen-affording gas such that the heat evolved in the exothermic methane coupling reaction is effectively transferred to the endothermic cracking process in a manner which does not allow the non-hydrocarbon products in the effluent of the methane coupling reaction to mix with the effluent of the cracking process. By combining the cryogenic requirements of the two processes, the refrigeration used in air liquifaction to separate oxygen for the methane coupling process can provide refrigerant nitrogen to liquify one or more of methane, ethylene and propylene which can be used in the cryogenic separation of the C.sub.2 + hydrocarbon products in the cracking process effluent.Type: GrantFiled: December 31, 1991Date of Patent: October 19, 1993Assignee: Amoco CorporationInventors: Narasimhan Calamur, George A. Huff, Jr., Harold A. Lindahl
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Patent number: 4321130Abstract: Combustion air, prior to being introduced into the cracking furnace in a hydrocarbon pyrolytic conversion and separation system, is preheated by employing bottom pumparound, top pumparound and/or quench water streams diverting from the primary fractionator externally connected to the pyrolysis reactor in order to optimize the thermal efficiency of the overall process.Type: GrantFiled: December 5, 1979Date of Patent: March 23, 1982Assignee: Exxon Research & Engineering Co.Inventor: George J. Bacsik