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US 2022/0010211 A1Published application
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
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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.
Claims20
A process for converting plastics to monomers comprising:
- heating a plastic feed stream to a temperature of about 300 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;
- recovering monomers from said gaseous pyrolysis product stream;
- and
- taking a cracking unit feed stream from said liquid pyrolysis product stream;
- and
- feeding said cracking unit feed stream to a cracking unit.
4 more elements
An apparatus for pyrolyzing plastics comprising:
- a pyrolysis reactor, a separator in downstream communication with said pyrolysis reactor, a recovery section in downstream communication with said separator and a cracking unit in downstream communication with said separator and said recovery section in downstream communication with said cracking unit.
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;
- recovering monomers from said gaseous pyrolysis product stream;
- taking a cracking unit feed stream from said liquid pyrolysis product stream;
- feeding said cracking unit feed stream to a cracking unit to produce a cracking effluent stream;
- and
- recovering monomers from said cracking effluent stream and said vapor pyrolysis stream together.
4 more elements
Dependencies are inferred from the claim text.