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Class Information
Number: 585/441
Name: Chemistry of hydrocarbon compounds > Aromatic compound synthesis > Having alkenyl moiety, e.g., styrene, etc. > By dehydrogenation > Plural stage or with plural separation procedures
Description: Subject matter wherein the effluent from a dehydrogenation reaction is sent to another dehydrogenation reaction or in which two or more separation steps are performed.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8710286 Oxidative coupling of hydrocarbons as heat source Apr. 29, 2014
8669406 Process for the preparation of hydrogenated hydrocarbon compounds Mar. 11, 2014
8653317 Dehydrogenation process and catalyst Feb. 18, 2014
8642826 Process for long-term operation of a continuous heterogeneously catalyzed partial dehydrogenation of a hydrocarbon to be dehydrogenated Feb. 4, 2014
8450547 Process for cooling the stream leaving an ethylbenzene dehydrogenation reactor May. 28, 2013
8350109 Production of styrene from ethylbenzene using azeotropic vaporization and low overall water to ethylbenzene ratios Jan. 8, 2013
8237000 Combined carbon dioxide and oxygen process for ethylbenzene dehydrogenation to styrene Aug. 7, 2012
8178738 Method for extending catalyst life in processes for preparing vinyl aromatic hydrocarbons May. 15, 2012
8173852 Methods and apparatuses for producing styrene from ethylbenzene May. 8, 2012
7999144 Microchannel apparatus and methods of conducting catalyzed oxidative dehydrogenation Aug. 16, 2011
7981377 Dehydrogenation of alkyl aromatics Jul. 19, 2011
7964765 Styrene monomer process based on oxidative dehydrogenation of ethylbenzene using CO.sub.2 as a soft oxidant Jun. 21, 2011
7922980 EB/SM splitter heat recovery Apr. 12, 2011
7816576 Method for catalytically dehydrating hydrocarbons Oct. 19, 2010
7728184 Process for the dehydrogenation of alkyl-aromatic hydrocarbons for the production of vinyl-aromatic monomers Jun. 1, 2010
7713498 Manufacturing plant for the dehydrogenation of an unsaturated hydrocarbon May. 11, 2010
7696394 Treatment of alkylation catalyst poisons with dehydrogenation Apr. 13, 2010
7687673 Process for reacting over two catalyst beds Mar. 30, 2010
7642390 EB/SM splitter heat recovery Jan. 5, 2010
7638664 Hydrocarbon conversion process including a staggered-bypass reaction system Dec. 29, 2009
7622620 Hydrocarbon conversion process including a staggered-bypass reaction system Nov. 24, 2009
7595427 Process for production of styrene by catalytic gas phase dehydrogenation of ethylbenzene Sep. 29, 2009
7435862 Radial reactor loading of a dehydrogenation catalyst Oct. 14, 2008
7393986 Process for the production and purification of vinyl aromatic monomers Jul. 1, 2008
7285205 Process of regenerative reforming Oct. 23, 2007
7244868 Process for the dehydrogenation of an unsaturated hydrocarbon Jul. 17, 2007
6884915 Process for producing styrene Apr. 26, 2005
6544408 Process and installation for the production of aromatic compounds in a fixed bed Apr. 8, 2003
6525232 Process and apparatus for endothermic reactions of organic compounds Feb. 25, 2003
6472577 Process for increasing the yield and selectivity of a dehydrogenation process using side-by-side reaction zones Oct. 29, 2002
6388154 Process for producing styrene May. 14, 2002
6388155 Styrene dehydrogenation reactor effluent treatment May. 14, 2002
6380450 Process for producing indene Apr. 30, 2002
6300534 Process for producing dehydrogenated compounds of m-ethyldiphenylalkane Oct. 9, 2001
6171449 Cascade reboiling of ethylbenzene/styrene columns Jan. 9, 2001
6166267 Synthesis of n-silylated cyclopentaphenanthrene compounds Dec. 26, 2000
6096937 Process for dehydrogenation of ethylbenzene to styrene Aug. 1, 2000
6031143 Process for the production of styrene Feb. 29, 2000
5965757 Synthesis of N-silylated cyclopentaphenanthrene compounds Oct. 12, 1999
5877385 Process including extractive distillation and/or dehydrogenation to produce styrene from petroleum feedstock including ethyl-benzene/xylene mixtures Mar. 2, 1999
5739071 Method and apparatus for regeneratinig and stabilizing dehydrogenation catalysts Apr. 14, 1998
5710356 Method of conducting an endothermic reaction in a packed-bed reactor with external energy addition Jan. 20, 1998
5461179 Regeneration and stabilization of dehydrogenation catalysts Oct. 24, 1995
5453177 Integrated distillate recovery process Sep. 26, 1995
5446227 Co-production of an alkenyl aromatic compound or precursor thereof and an oxygenated sulfur-containing compound Aug. 29, 1995
5401895 Process for preparing divinylbenzene Mar. 28, 1995
5118892 Preparation of a dimethylnaphthalene Jun. 2, 1992
5053572 Multistage ethylbenzene dehydrogenation process with split-flow hydrocarbon feed Oct. 1, 1991
5001291 Hydrocarbon dehydrogenation reactions Mar. 19, 1991
4973779 Hydrocarbon conversion process utilizing surface impregnated catalyst Nov. 27, 1990

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