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Class Information
Number: 585/802
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By plural serial diverse separations
Description: Subject matter wherein a feedstock containing the hydrocarbon material is subjected to a series of separation procedures which differ from each other in their mechanism, usually to separate the starting mixture into more than two components, to nullify the effect of more than one component, to free the recoverable material from a byproduct of the separation process, etc.

Sub-classes under this class:

Class Number Class Name Patents
585/803 To recover alicyclic 62
585/804 To recover aromatic 127
585/809 To recover unsaturate 284

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8692048 Method for revamping an HF or sulphuric acid alkylation unit Apr. 8, 2014
8664462 Method of processing feed streams containing hydrogen sulfide Mar. 4, 2014
8648227 Method for extracting pure styrene from a pyrolysis benzine fraction Feb. 11, 2014
8642828 Process for purifying a recycle stream from a 1,3-butadiene processing plant Feb. 4, 2014
8642827 Method for cooling in distillation and polymerisation process by absorption refrigeration 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
8558046 Aromatic alkylation process Oct. 15, 2013
8552244 Process for recovering solvent from spent oil sand solids Oct. 8, 2013
8552246 Removal of carbon dioxide from paraffins Oct. 8, 2013
8524972 Low temperature steam stripping for byproduct polymer and solvent recovery from an ethylene oligomerization process Sep. 3, 2013
RE44462 Carbon dioxide fractionalization process Aug. 27, 2013
8512660 Method and device for the absorptive removal of carbon dioxide from biogas Aug. 20, 2013
8505332 Natural gas liquid recovery process Aug. 13, 2013
8481797 Processes for maximizing high-value aromatics production utilizing stabilized crude benzene withdrawal Jul. 9, 2013
8471087 Process that utilizes combined distillation and membrane separation in the separation of an acidic contaminant from a light hydrocarbon gas stream Jun. 25, 2013
8460434 Methane recovery from a landfill gas Jun. 11, 2013
8436223 Separation of olefins from olefins/paraffins mixed gas May. 7, 2013
8431094 Selective CO oxidation for acetylene converter feed CO control Apr. 30, 2013
8431762 Production of high purity butene-1 from C4 olefins/paraffins mixed gas Apr. 30, 2013
8415520 Work-up of a 3-methyl-1-butene-containing mixture Apr. 9, 2013
8338656 Separating olefin streams Dec. 25, 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
8273938 Heavy olefin production process Sep. 25, 2012
8222474 Fractional extraction of butadiene Jul. 17, 2012
8221634 Process and apparatus for separating and recovering waste alkali from cyclohexane oxidation solution Jul. 17, 2012
8193405 Metathesis unit pretreatment process with formation of octene Jun. 5, 2012
8173855 Process for the production of low-concentration ethylene for chemical use May. 8, 2012
8158842 Production of chemicals from pyrolysis oil Apr. 17, 2012
8110023 Configurations and methods for offshore LNG regasification and BTU control Feb. 7, 2012
8093440 Process and apparatus for C.sub.2 recovery Jan. 10, 2012
8080701 Method and apparatus for treating a hydrocarbon stream Dec. 20, 2011
8071835 Process to produce polyolefins using metallocene catalysts Dec. 6, 2011
8057666 Biomass and waste plastics to neodiesel and valuable chemicals via supercritical water Nov. 15, 2011
8058498 Device for removing oxygen-containing organic compounds from mixtures of various hydrocarbon compounds Nov. 15, 2011
8053620 Guard bed for removing contaminants from feedstock to a normal paraffin extraction unit Nov. 8, 2011
8013201 High energy reduction in a propane dehydrogenation unit by utilizing a high pressure product splitter column Sep. 6, 2011
7982086 Deisobutenizer Jul. 19, 2011
7973209 Fractionation recovery processing of light olefins free of carbon dioxide Jul. 5, 2011
7960601 Heavy paraffin adsorption separation process Jun. 14, 2011
7956231 Method for separation of olefins Jun. 7, 2011
7932428 Process for preparing 1-butene from technical mixtures of C4 hydrocarbons Apr. 26, 2011
7855312 Method for processing an olefin-containing product stream Dec. 21, 2010
7847142 HF alkylation process with acid regeneration Dec. 7, 2010
7842847 Separation process for olefin production Nov. 30, 2010
7820033 Method for adjusting yields in a light feed FCC reactor Oct. 26, 2010
7803979 Method for removing water from an alkylation process system Sep. 28, 2010
7777088 Carbon dioxide fractionalization process Aug. 17, 2010
7714180 Process and apparatus for recovering olefins May. 11, 2010

1 2 3 4

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