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Class Information
Number: 585/814
Name: Chemistry of hydrocarbon compounds > Purification, separation, or recovery > By cooling of liquid to obtain solid, e.g., crystallization, etc. > With treatment of mother liquor after crystal separation
Description: Subject matter wherein solids are removed from a remaining liquid and the liquid is given a further treatment, usually to remove further components from the liquid by another crystallization.










Patents under this class:

Patent Number Title Of Patent Date Issued
8558048 Stabilized protein crystals, formulations comprising them and methods of making them Oct. 15, 2013
8530716 Melt-crystallization separation and purification process Sep. 10, 2013
8431763 Separation method of aromatic compounds comprising simulated moving bed xylene mixture pre-treatment process and additional xylene isomerization process Apr. 30, 2013
8232442 Separation method of aromatic compounds comprising simulated moving bed xylene mixture pre--treatment process and additional xylene isomerization process Jul. 31, 2012
8211319 Solid-liquid separation process Jul. 3, 2012
8030533 Method for combined production of paraxylene and benzene with improved productivity Oct. 4, 2011
7812206 Apparatus and process for the separation of solids and liquids Oct. 12, 2010
7795489 Method for obtaining 2,6-dimethylnaphthalene using isomerization and crystallization processes Sep. 14, 2010
7605296 Method for separating and purifying 2,6-dimethylnaphthalene Oct. 20, 2009
6894202 Method for producing 2,6-dimethylnaphthalene May. 17, 2005
6737558 Process for the separation of 2,6-dimethylnaphthalene from mixtures containing it May. 18, 2004
6600083 Para-xylene production process integrating pressure swing adsorption and crystallization Jul. 29, 2003
6525235 Method for manufacturing 2,6-dimethylnaphthalene Feb. 25, 2003
6399846 Process for production of paraxylene comprising a high-temperature crystallization with at least one stage and a partial melting of the crystals Jun. 4, 2002
6147272 Process for separating paraxylene comprising at least two crystallization stages at high temperature Nov. 14, 2000
6111161 Process for production of paraxylene comprising a high-temperature crystallization with at least one stage and a partial melting of the crystals Aug. 29, 2000
6072098 Process for producing highly pure 2,6-dimethylnaphthalene Jun. 6, 2000
6063978 Process for separating paraxylene comprising at least one crystallization stage at high temperature and at least one clay treatment upstream from the adsorption zone May. 16, 2000
6060634 Production of para-xylene from an effluent from paraselective toluene disproportionation using a crystallization process combined with simulated moving bed adsorption May. 9, 2000
6057487 Method for producing 2,6-DMN from mixed dimethylnaphthalenes by crystallization, adsorption and isomerization May. 2, 2000
5948949 Process for producing 2,6-dimethylnaphthalene Sep. 7, 1999
5922924 Process for the separation of p-xylene in C.sub.8 aromatic hydrocarbons with a simulated moving bed adsorption and a crystallization Jul. 13, 1999
5866740 Production of para-xylene from an effluent from paraselective toluene disproportionation using a crystallization process combined with simulated moving bed adsorption Feb. 2, 1999
5811629 Crystallization process for purification of paraxylene Sep. 22, 1998
5629467 Process and apparatus for the separation of p-xylene in C.sub.8 aromatic hydrocarbons with a simulated moving bed adsorption and a crystallization May. 13, 1997
5329061 Crystallization process for para-xylene recovery using two-stage recovery section Jul. 12, 1994
5284992 Process and apparatus for the separation of p-xylene in C.sub.8 aromatic hydrocarbons with a simulated moving bed absorption and a crystallization Feb. 8, 1994
5055630 Process for making p-xylene with a purity of more than 99.8% by weight Oct. 8, 1991
5004860 Filter system Apr. 2, 1991
4946560 Process for separating alpha and internal olefins Aug. 7, 1990
4915794 Process for converting internal olefins to alpha olefins Apr. 10, 1990
4914257 Method and apparatus for recovering high purity toluene, hexane, titanium tetrachloride and tetrahydrofuran from mixtures Apr. 3, 1990
4654450 Inhibiting polymerization of vinyl aromatic monomers Mar. 31, 1987
4524227 Coproduction of durene and gasoline from synthesis gas and alcohols and separation of durene-gasoline mixtures Jun. 18, 1985
4524228 Production of durene and gasoline from synthesis gas Jun. 18, 1985
4524231 Production of durene from alcohols and ethers Jun. 18, 1985
4025573 Separation process May. 24, 1977
3959978 Separation process by fractional crystallization Jun. 1, 1976
3939221 Xylenes separation process Feb. 17, 1976











 
 
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