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Class Information
Number: 585/809
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By plural serial diverse separations > To recover unsaturate
Description: Subject matter wherein an unsaturated hydrocarbon, e.g., an olefin, an alkyene, etc., is purified or separated out from a mixture.










Sub-classes under this class:

Class Number Class Name Patents
585/810 Diolefin 75
585/811 Including treatment with s-containing agent 22


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8704021 Process for increasing weight of olefins Apr. 22, 2014
8686212 Process for treatment of ethylene Apr. 1, 2014
8669407 Method of isolating linear butenes from a mixed hydrocarbon feed Mar. 11, 2014
8642828 Process for purifying a recycle stream from a 1,3-butadiene processing plant Feb. 4, 2014
8618344 Process for recovery of propylene and LPG from FCC fuel gas using stripped main column overhead distillate as absorber oil Dec. 31, 2013
8598402 Butane absorption system for vent control and ethylene purification Dec. 3, 2013
8563793 Integrated processes for propylene production and recovery Oct. 22, 2013
8552245 Method for treating a cracked gas stream from a hydrocarbon pyrolysis installation and installation associated therewith Oct. 8, 2013
8524972 Low temperature steam stripping for byproduct polymer and solvent recovery from an ethylene oligomerization process Sep. 3, 2013
8507396 Regeneration of acidic catalysts Aug. 13, 2013
8492605 Microbial derived isoprene and methods for making the same Jul. 23, 2013
8492604 Method for preparing linear alpha-olefins with removal of aromatic by-products and reactor system therefor Jul. 23, 2013
8436223 Separation of olefins from olefins/paraffins mixed gas May. 7, 2013
8431762 Production of high purity butene-1 from C4 olefins/paraffins mixed gas Apr. 30, 2013
8431094 Selective CO oxidation for acetylene converter feed CO control Apr. 30, 2013
8420879 Process for workup of a stream comprising butene and/or butadiene Apr. 16, 2013
8415520 Work-up of a 3-methyl-1-butene-containing mixture Apr. 9, 2013
8388828 Recovery and use of conjunct polymers from ionic liquid catalysts Mar. 5, 2013
8361280 Process for distillatively obtaining pure 1,3-butadiene from crude 1,3-butadiene Jan. 29, 2013
8338656 Separating olefin streams Dec. 25, 2012
8324442 Microbial derived isoprene and methods for making the same Dec. 4, 2012
8309776 Method for contaminants removal in the olefin production process Nov. 13, 2012
8283509 Thermal-separation process with absorption heat pump Oct. 9, 2012
8237005 Method for separating and producing cyclohexene Aug. 7, 2012
8203028 Processes for olefin/paraffin separation utilizing porous, hydrophobic poly(ether ether ketone) membranes Jun. 19, 2012
8193405 Metathesis unit pretreatment process with formation of octene Jun. 5, 2012
8188327 Isooctene/isooctane process May. 29, 2012
8178061 Propylene recovery during regeneration of an oxygenate removal unit May. 15, 2012
8178741 Method and apparatus for regenerating catalyst during oxygenates to olefins reaction May. 15, 2012
8173855 Process for the production of low-concentration ethylene for chemical use May. 8, 2012
8143470 Method of purifying olefins using pyrrolidinium-based or piperidinium-based ionic liquids comprising copper (I) halide Mar. 27, 2012
8129577 Process and system for providing acetylene Mar. 6, 2012
8083951 Method for purifying quench water and scrubbing water from MTO by mini-hydrocyclone and apparatus used for same Dec. 27, 2011
8076526 Extractive distillation of conjugated diene Dec. 13, 2011
8071835 Process to produce polyolefins using metallocene catalysts Dec. 6, 2011
8062599 Oxygenate conversion reactor catalyst coolers Nov. 22, 2011
8058498 Device for removing oxygen-containing organic compounds from mixtures of various hydrocarbon compounds Nov. 15, 2011
8048295 Process for decreasing bromine-reactive contaminants in hydrocarbon feeds Nov. 1, 2011
8048294 Process for reducing bromine index of hydrocarbon feedstocks Nov. 1, 2011
8013201 High energy reduction in a propane dehydrogenation unit by utilizing a high pressure product splitter column Sep. 6, 2011
7994378 Process of butadiene-1, 3 extraction Aug. 9, 2011
7989669 Recycle of DME in an oxygenate-to-olefin reaction system Aug. 2, 2011
7981256 Splitter with multi-stage heat pump compressor and inter-reboiler Jul. 19, 2011
7982086 Deisobutenizer Jul. 19, 2011
7973209 Fractionation recovery processing of light olefins free of carbon dioxide Jul. 5, 2011
7968758 Process for the dissociation of MTBE Jun. 28, 2011
7959766 Method for obtaining cyclododecatriene by evaporation Jun. 14, 2011
7956231 Method for separation of olefins Jun. 7, 2011
7935650 Neutralization of quench stream in a process for handling catalyst from an oxygenate-to-olefin reaction May. 3, 2011
7923595 Process for the treatment of a product stream Apr. 12, 2011

1 2 3 4 5 6










 
 
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