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Class Information
Number: 585/263
Name: Chemistry of hydrocarbon compounds > Adding hydrogen to unsaturated bond of hydrocarbon, i.e., hydrogenation > With temperature or concentration gradient in reactor or specified provision for heating, cooling, or reactor control
Description: Subject matter wherein the temperature or concentration of reactants or composition of a catalyst changes gradually from one point to another in a hydrogenation reactor, wherein procedures for heating or cooling the reactor, reactants, catalyst, etc., are specified, wherein a test or measurement is made, or wherein a synthesis condition is varied in response to a change in a diverse condition.

Patents under this class:

Patent Number Title Of Patent Date Issued
8664459 Process for hydrogenating olefins Mar. 4, 2014
8637425 Process for preparing a Ni/Sn supported catalyst for the selective hydrogenation of polyunsaturated hydrocarbons Jan. 28, 2014
8471082 Process for converting methane to ethylene Jun. 25, 2013
8383872 Multiphase reaction process using microchannel technology Feb. 26, 2013
8314276 Liquid phase hydroprocessing with temperature management Nov. 20, 2012
8293959 Purification of an aromatic fraction containing acetylenes by selective hydrogenation of the acetylenes Oct. 23, 2012
8188327 Isooctene/isooctane process May. 29, 2012
8008534 Liquid phase hydroprocessing with temperature management Aug. 30, 2011
7988919 Laboratory scale continuous flow hydrogenation process Aug. 2, 2011
7776277 Polymerization method and polymerization apparatus Aug. 17, 2010
7514387 Reformer and method of making the same Apr. 7, 2009
7193120 Colloid-catalyzed gas transfer in supercritical phases Mar. 20, 2007
6822128 Flow control in a three-phase monolithic catalyst reactor Nov. 23, 2004
6365791 Process for converting hydrocarbons by treatment in a distillation zone comprising extracting a hydrocarbon cut as a side stream, associated with a reaction zone, and its use for hydrogenating Apr. 2, 2002
6238549 Process for converting hydrocarbons by treatment in a distillation zone associated with a reaction zone, comprising re-contacting a vapor distillate with the feed, and its use for hydrogenatin May. 29, 2001
6194623 Hydrogenation of organic compounds with the use of the NEMCA effect Feb. 27, 2001
6156933 Supercritical hydrogenation Dec. 5, 2000
6118034 Process for the selective hydrogenation of dienes in reformate flows Sep. 12, 2000
6084141 Hydrogenation process comprising a catalytic distillation zone comprising a reaction zone with distribution of hydrogen Jul. 4, 2000
6037510 Catalytic gas-phase hydrogenation of olefins Mar. 14, 2000
6011188 Multi-bed selective hydrogenation of acetylenes Jan. 4, 2000
5962755 Process for the isomerization of benzene containing feed streams Oct. 5, 1999
5817901 Selective hydrogenation of hydrocarbon cuts containing monounsaturated and polyunsaturated hydrocarbons Oct. 6, 1998
5763713 Process for the isomerization of benzene containing feed streams Jun. 9, 1998
5731485 Method of controlling a heater using heat flux ratios Mar. 24, 1998
4617110 Control of a hydrofining process for hydrocarbon-containing feed streams which process employs a hydrodemetallization reactor in series with a hydrodesulfurization reactor Oct. 14, 1986
4472264 Process for converting solid carbonaceous materials to methane Sep. 18, 1984
4367354 Temperature control of a selective hydrogenation process Jan. 4, 1983
4345915 Mixed feed evaporator Aug. 24, 1982
4251674 Method and apparatus for improving the selectivity of a process for hydrogenating acetylene to ethylene Feb. 17, 1981
4249907 Temperature control of exothermic reactions Feb. 10, 1981
4249908 Temperature control of exothermic reactions Feb. 10, 1981
4241230 Control system for the selective hydrogenation of acetylene present in ethylene product streams Dec. 23, 1980
4234314 Guard-bed vapor bypass to overcome pressure drop in mixed-phase reactions Nov. 18, 1980
4132530 Temperature control in exothermic/endothermic reaction systems Jan. 2, 1979
4129606 Temperature control of integrated fractionation column and reaction zone Dec. 12, 1978
4032591 Preparation of alpha-olefin oligomer synthetic lubricant Jun. 28, 1977
3947509 Method for preparation of hydrocarbon liquid polymers Mar. 30, 1976

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