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Class Information
Number: 585/264
Name: Chemistry of hydrocarbon compounds > Adding hydrogen to unsaturated bond of hydrocarbon, i.e., hydrogenation > With preliminary treatment of feed or plural separation procedures
Description: Subject matter wherein a reactant to the process is treated, e.g., by heating, purification, etc., before the hydrogenation reaction or wherein more than one separation procedure is applied to the hydrogenerator effluent.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8648227 Method for extracting pure styrene from a pyrolysis benzine fraction Feb. 11, 2014
8598394 Manufacture of low viscosity poly alpha-olefins Dec. 3, 2013
8487151 Process and apparatus for filtration and pre-distribution of gas and liquid phases in a down-flow catalytic reactor Jul. 16, 2013
8440871 Tetramer production apparatus and process relating thereto May. 14, 2013
8431094 Selective CO oxidation for acetylene converter feed CO control Apr. 30, 2013
8395002 Use of catalytic distillation for benzene separation and purification Mar. 12, 2013
8216450 Removal of bromine index contaminants from aromatic streams Jul. 10, 2012
8048295 Process for decreasing bromine-reactive contaminants in hydrocarbon feeds Nov. 1, 2011
8013197 Absorption and conversion of acetylenic compounds Sep. 6, 2011
7988919 Laboratory scale continuous flow hydrogenation process Aug. 2, 2011
7960599 Method for making industrial chemicals Jun. 14, 2011
7935855 Process and apparatus for treating a feed comprising butadiene May. 3, 2011
7927480 Process for desulfurization of cracked naphtha Apr. 19, 2011
7888540 Integrated system and method for producing fuel composition from biomass Feb. 15, 2011
7744750 Process for reducing Bromine Index of hydrocarbon feedstocks Jun. 29, 2010
7393993 Method for removal of acetylenes from hydrocarbon streams Jul. 1, 2008
7368618 Process for removal of oxygenates from a paraffin stream May. 6, 2008
7351327 Process for the selective desulfurization of a mid range gasoline cut Apr. 1, 2008
7329787 Process for transforming hydrocarbons into a fraction having an improved octane number and a fraction with a high cetane index Feb. 12, 2008
7250106 Flexible process for the production of oil bases and middle distillates with a converting pretreatment stage followed by a catalytic dewaxing stage Jul. 31, 2007
7223894 Process for total hydrogenation using a catalytic reactor with a hydrogen-selective membrane May. 29, 2007
7175754 Process for the production of low benzene gasoline Feb. 13, 2007
7090766 Process for ultra low sulfur gasoline Aug. 15, 2006
7074971 Recovery of ethylene and propylene from a methanol to olefin reaction system Jul. 11, 2006
7060865 Recovery of C4 olefins from a product stream comprising C4 olefins, dimethyl ether and C5+ hydrocarbons Jun. 13, 2006
6855853 Process for the production of low benzene gasoline Feb. 15, 2005
6835301 Production of low sulfur/low aromatics distillates Dec. 28, 2004
6830678 Process of desulphurizing gasoline comprising desulphurization of the heavy and intermediate fractions resulting from fractionation into at least three cuts Dec. 14, 2004
6824676 Process for the selective desulfurization of a mid range gasoline cut Nov. 30, 2004
6781023 Decreasing Br-reactive contaminants in aromatic streams Aug. 24, 2004
6740787 Process for treatment of C4 hydrocarbons that comprise butadiene and acetylene compounds that comprise stages for distillation and selective hydrogenation May. 25, 2004
6632414 Mini-structured catalyst beds for three-phase chemical processing Oct. 14, 2003
6620982 Method of producing purified cyclopentane Sep. 16, 2003
6495030 Process for the desulfurization of FCC naphtha Dec. 17, 2002
6486369 Process for selective hydrogenation of an olefinic feed stream containing acetylenic and diolefinic impurities Nov. 26, 2002
6468399 Process for isolating cyclopentane and/or cyclopentene Oct. 22, 2002
6451198 Process for transforming a gas oil cut to produce a dearomatized and desulphurized fuel with a high cetane number Sep. 17, 2002
6444118 Process for sulfur reduction in naphtha streams Sep. 3, 2002
6414205 Process for the removal of MAPD from hydrocarbon streams Jul. 2, 2002
6410811 Selective hydrogenation process comprising partial separation of hydrogen by a membrane upstream of a reactive column Jun. 25, 2002
6376735 Process to remove reaction by-products from a selective hydrogenation effluent stream Apr. 23, 2002
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
6316646 Process for the continuous catalytic transformation of organic compounds Nov. 13, 2001
6264799 Process for isolating cyclopentane and/or cyclopentene Jul. 24, 2001
6261442 Process for converting hydrocarbons by treatment in a distillation zone comprising withdrawing a stabilized distillate, associated with a reaction zone, and its use for hydrogenating benzene Jul. 17, 2001
6221239 Process for transforming a gas oil cut to produce a dearomatised and desulphurised fuel with a high cetane number Apr. 24, 2001
6217749 Process for hydrotreating a hydrocarbon feedstock and apparatus for carrying out same Apr. 17, 2001
6210561 Steam cracking of hydrotreated and hydrogenated hydrocarbon feeds Apr. 3, 2001
6194626 Process for the purification of a diolefin hydrocarbon stream from a naphtha steam cracker Feb. 27, 2001
6156946 Biological activation of aromatics for chemical processing and/or upgrading of aromatic compounds, petroleum, coal, resid, bitumen and other petrochemical streams Dec. 5, 2000

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