DISTILLATION PROCESS FOR PRODUCTION OF ACRYLIC ACID
3 Assignments
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Accused Products
Abstract
Provided are integrated processes for the conversion of beta propiolactone to acrylic acid. Systems for the production of acrylic acid are also provided.
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Citations
31 Claims
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1-17. -17. (canceled)
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18. A system for converting beta propiolactone to acrylic acid, comprising:
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(a) a reaction zone comprising beta propiolactone, a solvent, and a polymerization catalyst, wherein the reaction zone is a reactive distillation column configured to (i) operate at or above the pyrolysis temperature of poly(propiolactone), (ii) concurrently polymerize the beta propiolactone to poly(propiolactone) in the presence of the polymerization catalyst and thermally decompose the poly(propiolactone) to acrylic acid, and (iii) output a distillation stream comprising the solvent; and (b) a return loop configured to return a portion of the acrylic acid to the reaction zone. - View Dependent Claims (19)
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20. A system for producing acrylic acid, comprising:
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a beta propiolactone source; a polymerization catalyst source; and a reactor comprising; at least one inlet to receive beta propiolactone in a solvent from the beta propiolactone source and a polymerization catalyst from the polymerization catalyst source, at least one outlet to output an acrylic acid stream and a distillation stream comprising the solvent, wherein the reactor is configured to (i) polymerize the beta propiolactone to produce poly(propiolactone) in the presence of the polymerization catalyst at or above the pyrolysis temperature of poly(propiolactone), (ii) concurrently thermally decompose the poly(propiolactone) to produce acrylic acid in situ, (iii) output the acrylic acid stream, and (iv) output the distillation stream. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A system for producing acrylic acid, comprising:
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a beta propiolactone source; and a reactor comprising; a fixed bed of polymerization catalyst, an inlet to receive beta propiolactone in a solvent from the beta propiolactone source, at least one outlet to output an acrylic acid stream and a distillation stream comprising the solvent, wherein the reactor is configured to (i) polymerize the beta propiolactone to produce poly(propiolactone) in the presence of the polymerization catalyst, at or above the pyrolysis temperature of poly(propiolactone), (ii) concurrently thermally decompose the poly(propiolactone) to produce acrylic acid in situ, (iii) output the acrylic acid stream, and (iv) output the distillation stream. - View Dependent Claims (28, 29, 30, 31)
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Specification