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Production system/production process for acrylic acid and precursors thereof

  • US 10,703,702 B2
  • Filed: 07/29/2016
  • Issued: 07/07/2020
  • Est. Priority Date: 07/31/2015
  • Status: Active Grant
First Claim
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1. A process for producing acrylic acid from a source of β

  • -propiolactone, the process comprising;

    contacting a β

    -propiolactone feed stream with a polymerization initiator in a polypropiolactone reaction zone having at least one polymerization reactor to produce a polypropiolactone outlet stream comprising polypropiolactone and β

    -propiolactone, wherein the at least one polymerization reactor is at least one of a continuous reactor or a semi-batch reactor; and

    passing at least a portion of the polypropiolactone outlet stream to an acrylic acid production zone comprising a thermolysis reactor that receives the at least a portion of the polypropiolactone outlet stream to produce an acrylic acid stream comprising acrylic acid.

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