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Title: 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:
 [1];  [2]
  1. (Lakewood, CO)
  2. (Arvada, CO)
Issue Date:
Research Org.:
MIDWEST RESEARCH INSTITUTE
Sponsoring Org.:
USDOE
OSTI Identifier:
870145
Patent Number(s):
5464602
Assignee:
Midwest Research Institute (Kansas City, MO) CHO
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
sequential; pyrolysis; plastic; recover; polystyrene; hcl; terephthalic; acid; process; pyrolyzing; waste; feed; streams; containing; polyvinyl; chloride; polyethylene; terephthalate; comprising; heating; stream; temperature; adding; base; catalyst; oxide; carbonate; support; pyrolyze; separating; styrene; third; hydrocarbons; streams containing; vinyl chloride; sequential pyrolysis; polyvinyl chloride; waste feed; feed stream; plastic waste; feed streams; acid comprising; containing poly; recover polystyrene; carbonate support; polystyrene hcl; /423/585/588/

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. Sun . "Sequential pyrolysis of plastic to recover polystyrene HCL and terephthalic acid". United States. https://www.osti.gov/servlets/purl/870145.
@article{osti_870145,
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 = {1}
}

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