Process for the continuous separation of maleic acid from...

Details Process for the continuous separation of maleic acid from... Process for the continuous separation of maleic acid from...

C - Chemistry, Metallurgy

07

D

31/1, 260/374.4

C07D 307/60 (2006.01) C07C 51/42 (2006.01) C07C 51/573 (2006.01)

Patent

CA 1137096

PROCESS FOR THE CONTINUOUS SEPARATION OF MALEIC ACID FROM PROCESS GASES ABSTRACT Process for the continuous separation of maleic anhydride from process gases from the catalytic oxidation of hydrocarbons, e.g., n-butane, in the steam phase. The process gases are treated with a solvent, which is a cycloaliphatic acid ester. Typically, the cycloaliphatic acid ester is a dialkyl ester, having 4 to 8 carbon atoms in each alkyl group, of hexahydrophthalic acid, tetradhydrophthalic acid, methyl- tetrahydrophthalic acid or methylhexahydrophthalia acid.

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