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US 12,012,553 B2Granted
Conversion of plastics to monomers with integrated recovery with a cracking unit
AssigneeUop LLC
InventorsMichael S. Allegro, II, Andrea Bozzano, Joseph A. Montalbano
Life of this patent
Estimating the term…
Abstract
A plastic pyrolysis process produces light olefin product and heavier products. The light olefin products are separated in a recovery process while the heavier product can be sent to a cracking unit to be further cracked to desired products. The cracked effluent stream may be subjected to the recovery process along with the light olefin product.
Claims15
A process for converting plastics to monomers comprising:
- heating a plastic feed stream to a temperature of about 300° C. to about 1100° C. to pyrolyze the plastic feed stream to a pyrolysis product stream including monomers;
- separating said pyrolysis product stream into a gaseous pyrolysis product stream and a liquid pyrolysis product stream;
- taking a cracking unit feed stream from said liquid pyrolysis product stream;
- fractionating said liquid pyrolysis product stream to provide a fractionated overhead stream and a fractionated bottoms stream;
- feeding said cracking unit feed stream to a cracking unit;
- and
- recovering monomers from said fractionated overhead stream with said gaseous pyrolysis product stream.
4 more elements
A process for converting plastics to monomers comprising:
- heating a plastic feed stream to a temperature of about 600 to about 1100° C. to pyrolyze the plastic feed stream to a pyrolysis product stream including monomers;
- separating said pyrolysis product stream into a gaseous pyrolysis product stream and a liquid pyrolysis product stream;
- taking a cracking unit feed stream from said liquid pyrolysis product stream;
- fractionating said liquid pyrolysis product stream to provide a fractionated overhead stream and a fractionated bottoms stream;
- feeding said cracking unit feed stream to a cracking unit to produce a cracking effluent stream;
- and
- recovering monomers from said fractionated overhead stream, said cracking effluent stream and said gaseous pyrolysis product stream together.
4 more elements
Dependencies are inferred from the claim text.