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US 10,099,989 B2Granted
Distillation process for production of acrylic acid
AssigneeNovomer, Inc.
InventorSadesh H. Sookraj
Life of this patent
Estimating the term…
Abstract
Provided are integrated processes for the conversion of beta propiolactone to acrylic acid. Systems for the production of acrylic acid are also provided.
Claims16
A method for producing acrylic acid, comprising:
- (a) providing a feedstock stream comprising beta propiolactone and a solvent;
- (b) directing the feedstock stream to a reaction zone, wherein the feedstock stream is contacted with a polymerization catalyst and wherein at least a portion of the beta propiolactone is converted to poly(propiolactone);
- (c) maintaining the reaction zone at a temperature at or above the pyrolysis temperature of poly(propiolactone);
- (d) thermal decomposing the poly(propiolactone) in the reaction zone to produce acrylic acid;
- (e) withdrawing a distillation stream of the solvent from the reaction zone;
- and
- (f) withdrawing an acrylic acid product stream from the reaction zone;
- wherein steps (b) to (d) occur in the same reaction zone.
5 more elements
Dependencies are inferred from the claim text.