Polymer cracking

Details Polymer cracking Polymer cracking

1993-04-08

1996-01-02

McFarlane, Anthony

Chemistry of hydrocarbon compounds

Production of hydrocarbon mixture from refuse or vegetation

From synthetic resin or rubber

585648, 585653, 208 49, 208 50, 208 51, 208 52R, 208 59, 208 60, 208 61, 208 67, 208 68, 208 69, 208 70, 208 72, 208106, 208107, 208108, C07C 108, C07C 400

Patent

active

054810523

ABSTRACT:
This invention relates to a process for cracking waste polymers in a fluidized bed reactor to produce vaporous products comprising primary products which can be further processed, eg in a steam cracker to produce olefins, characterized in that the vaporous products are treated to generate a primary product substantially free of a high molecular weight tail having molecular weights >700 prior to further processing. The removal of the high molecular weight tail minimizes fouling and prolongs the lifetime of the reactors used for further processing.

REFERENCES:
patent: 3901951 (1975-08-01), Nishizaki
patent: 4147593 (1979-04-01), Frischmuth
patent: 4151216 (1979-04-01), Smith
patent: 4740270 (1988-04-01), Roy
patent: 4822573 (1989-04-01), Timmann
patent: 4851601 (1989-07-01), Fukuda et al.
patent: 5136117 (1992-08-01), Paisley et al.
patent: 5364995 (1994-11-01), Kirkwood et al.

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