Sequential pyrolysis of plastic to recover polystyrene, HCl and terephthalic acid
Abstract
A process of pyrolyzing plastic waste feed streams containing polyvinyl chloride, polyethylene terephthalate, polystyrene and polyethylene to recover polystyrene HCl and terephthalic acid comprising: heating the plastic waste feed stream to a first temperature; adding an acid or base catalyst on an oxide or carbonate support; heating the plastic waste feed stream to pyrolyze polyethylene terephthalate and polyvinyl chloride; separating terephthalic acid or HCl; heating to a second temperature to pyrolyze polystyrene; separating styrene; heating the waste feed stream to a third temperature to pyrolyze polyethylene; and separating hydrocarbons.
- Inventors:
- Issue Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 131903
- Patent Number(s):
- 5464602
- Application Number:
- 08/370,470
- Assignee:
- Midwest Research Institute (Kansas City, MO)
- DOE Contract Number:
- AC02-83CH10093
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 1995 Jan 09; Other Information: PBD: 7 Nov 1995
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; PLASTICS; PYROLYSIS; POLYSTYRENE; MATERIALS RECOVERY; HYDROCHLORIC ACID; TEREPHTHALIC ACID; CATALYSTS; PVC; POLYETHYLENES; SEPARATION PROCESSES; WASTE PROCESSING
Citation Formats
Evans, Robert J., and Chum, Helena L. Sequential pyrolysis of plastic to recover polystyrene, HCl and terephthalic acid. United States: N. p., 1995.
Web.
Evans, Robert J., & Chum, Helena L. Sequential pyrolysis of plastic to recover polystyrene, HCl and terephthalic acid. United States.
Evans, Robert J., and Chum, Helena L. Tue .
"Sequential pyrolysis of plastic to recover polystyrene, HCl and terephthalic acid". United States.
@article{osti_131903,
title = {Sequential pyrolysis of plastic to recover polystyrene, HCl and terephthalic acid},
author = {Evans, Robert J. and Chum, Helena L.},
abstractNote = {A process of pyrolyzing plastic waste feed streams containing polyvinyl chloride, polyethylene terephthalate, polystyrene and polyethylene to recover polystyrene HCl and terephthalic acid comprising: heating the plastic waste feed stream to a first temperature; adding an acid or base catalyst on an oxide or carbonate support; heating the plastic waste feed stream to pyrolyze polyethylene terephthalate and polyvinyl chloride; separating terephthalic acid or HCl; heating to a second temperature to pyrolyze polystyrene; separating styrene; heating the waste feed stream to a third temperature to pyrolyze polyethylene; and separating hydrocarbons.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {11}
}
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