Antifoulant for acrylic acid purification
AssigneeNalco/Exxon Energy Chemical, L. P.
InventorHester A. Clever
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Abstract
The invention comprises a method of dispersing foulants, residues, gums, precipitates, polymeric tars and other highly oxidized carbonaceous tars which can be formed in the process of manufacture and recovery of acrylic acid. The method comprises adding to the liquid or gaseous phases passing through, or stored in acrylic acid process equipment, an effective antifouling amount of a dispersant which is stable in the environment within an acrylic acid process and is compatible with the equipment used for the manufacture of acrylic acid.
Claims7
A method of dispersing tars, gums, and foulants in acrylic acid monomer process equipment which comprises adding to the liquid or gaseous phases contained therein an effective antifouling amount of an antifoulant, said antifoulant having the structure:
- R(SO.sub.3).sub.n M
- wherein R is a hydrocarbonaceous group having from 1-34 carbon atoms chosen from linear or branched alkyl groups, aromatic, cyclic, alkaryl, aralkyl, or alkenyl groups, alkyl diphenyl ether groups, dialkyl naphthalene groups, or mixtures thereof;
- M is chosen from the group consisting of hydrogen, alkali metal, alkaline earth metal, ammonium cation, alkyl ammonium cation, or mixtures thereof;
- and n ranges from 1 to about 6.
Dependencies are inferred from the claim text.