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Class Information
Number: 585/825
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By contact with solid sorbent > With fractional or linear desorption, e.g., chromatography, etc.
Description: Subject matter in which a desorption step removes only part of the sorbate from the sorbent or in which during at least the desorption step the sorbent material is held in a relatively fixed arrangement and the desorption creates a more or less distinct boundary or "front" between that part of the sorbent mass which still contains sorbate and that part of the sorbent mass from which sorbate has been wholly or partially removed.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8704031 Adsorptive process for separation of C.sub.8 aromatic hydrocarbons Apr. 22, 2014
8673312 Method for one-step purification of recombinant Helicobacter pylori neutrophil-activating protein Mar. 18, 2014
8658848 Highly flexible process and apparatus for the simulated counter-current production of para-xylene Feb. 25, 2014
8404916 Process for separating and/or introducing a flush material in an adsorption separation system Mar. 26, 2013
8350114 Separation system and method Jan. 8, 2013
8323581 Apparatus for separating para-xylene from a mixture of C8 and C9 aromatic hydrocarbons Dec. 4, 2012
8283511 Ethylene production by steam cracking of normal paraffins Oct. 9, 2012
8273938 Heavy olefin production process Sep. 25, 2012
8198502 Process for separating para-xylene from a mixture of C8 and C9 aromatic hydrocarbons Jun. 12, 2012
8168845 Separation process May. 1, 2012
8158843 Deep desulfurization of hydrocarbon fuels Apr. 17, 2012
8123950 Process and apparatus for simulated moving bed separation comprising bypass lines in every other bed and with a modulated bypass fluid flow rate Feb. 28, 2012
8123951 Process and apparatus for simulated moving bed separation comprising bypass lines in every other bed and with controlled flushing flow rates during injections and withdrawals Feb. 28, 2012
8123952 Process and device for simulated moving bed separation with a modulated by-pass fluid flow Feb. 28, 2012
8021889 Chromatographic material for the absorption of proteins at physiological ionic strength Sep. 20, 2011
8008536 Simulated moving bed adsorptive separation process for handling multiple feedstocks Aug. 30, 2011
8003842 Hydrocarbon separation Aug. 23, 2011
7972568 Apparatus for separating para-xylene from a mixture of C8 and C9 aromatic hydrocarbons Jul. 5, 2011
7960601 Heavy paraffin adsorption separation process Jun. 14, 2011
7951970 Process for recycling cyclopentadienyl derivatives and preparing metallocenes from recycled, substituted cyclopentadienyl derivatives May. 31, 2011
7897829 Olefinic feedstock treatment processes Mar. 1, 2011
7838713 Process for separating para-xylene from a mixture of C8 and C9 aromatic hydrocarbons Nov. 23, 2010
7838714 Process and device for improved separation of metaxylene in a simulated moving bed Nov. 23, 2010
7777089 Hydrocarbon separation Aug. 17, 2010
7759534 Process and device for improved separation of paraxylene in a simulated moving bed Jul. 20, 2010
7750198 Olefinic feedstock treatment processes Jul. 6, 2010
7592499 Process for co-producing para-xylene and styrene Sep. 22, 2009
7468468 Process for separating meta-xylene from a feed of aromatic hydrocarbons by liquid phase adsorption Dec. 23, 2008
7435865 Method for separating hydrocarbons and use of a zeolite therefor Oct. 14, 2008
7396973 Simulated moving bed adsorptive separation process for handling multiple feedstocks Jul. 8, 2008
7390412 Method of managing the valves of a simulated moving bed separation system Jun. 24, 2008
7304124 Process for stripping volatile substances from dispersion comprising polymer particles and process for producing toner Dec. 4, 2007
7148392 Separation of 1-butene from C.sub.4 feed streams Dec. 12, 2006
6924406 Process for separating mixtures of hydrocarbon isomers in gas phase on molecular sieves Aug. 2, 2005
6888039 Purification process May. 3, 2005
6884918 Agglomerated zeolitic adsorbents, method for obtaining same uses thereof Apr. 26, 2005
6870073 Process for separating normal paraffins from hydrocarbons and applications for the separated hydrocarbons Mar. 22, 2005
6843907 Process for removal of carbonyl sulfide from hydrocarbons Jan. 18, 2005
6841714 Process for co-production of paraxylene, metaxylene and/or orthoxylene Jan. 11, 2005
6838588 Process for co-producing para-xylene and metaxylene, comprising two separation steps Jan. 4, 2005
6828470 Coproduction process for para-xylene and ortho-xylene comprising two separation steps Dec. 7, 2004
6784334 Process for separating multibranched paraffins using a zeolitic adsorbent with a mixed structure Aug. 31, 2004
6706938 Adsorptive separation process for recovery of para-xylene Mar. 16, 2004
6696616 Process for co-production of metaxylene and paraxylene Feb. 24, 2004
6696615 Method of separating polycyclic aromatic hydrocarbons by means of chromatography Feb. 24, 2004
6689929 Process for the production of para-xylene using toluene feeds and pressure swing adsorption Feb. 10, 2004
6670519 Monomethyl paraffin adsorptive separation process Dec. 30, 2003
6627783 Pressure swing adsorption process for separating para-xylene and ethylbenzene from mixed C8 aromatics Sep. 30, 2003
6600083 Para-xylene production process integrating pressure swing adsorption and crystallization Jul. 29, 2003
6573418 Process for production of para-xylene incorporating pressure swing adsorption and simulated moving bed adsorption Jun. 3, 2003

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