Process for production of acrylic acid
First Claim
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1. A method for producing acrylic acid, comprising:
- (a) providing a feedstock stream comprising beta propiolactone;
(b) directing the feedstock stream to a reaction zone;
(c) contacting the feedstock stream with a polymerization catalyst in the reaction zone;
(d) polymerizing at least a portion of the beta propiolactone to poly(propiolactone) in the reaction zone, wherein the temperature of the reaction zone is at or above the pyrolysis temperature of poly(propiolactone);
(e) thermally decomposing the poly(propiolactone) in the reaction zone to produce acrylic acid; and
(f) withdrawing an acrylic acid product stream comprising the acrylic acid from the reaction zone;
wherein steps (b) and (e) occur in the same reaction zone.
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Abstract
Provided are integrated processes for the conversion of beta propiolactone to acrylic acid. Systems for the production of acrylic acid are also provided.
119 Citations
12 Claims
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1. A method for producing acrylic acid, comprising:
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(a) providing a feedstock stream comprising beta propiolactone; (b) directing the feedstock stream to a reaction zone; (c) contacting the feedstock stream with a polymerization catalyst in the reaction zone; (d) polymerizing at least a portion of the beta propiolactone to poly(propiolactone) in the reaction zone, wherein the temperature of the reaction zone is at or above the pyrolysis temperature of poly(propiolactone); (e) thermally decomposing the poly(propiolactone) in the reaction zone to produce acrylic acid; and (f) withdrawing an acrylic acid product stream comprising the acrylic acid from the reaction zone; wherein steps (b) and (e) occur in the same reaction zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification