Monomer recovery from polymeric materials

Details Monomer recovery from polymeric materials Monomer recovery from polymeric materials

1993-02-08

1994-07-05

Pal, Asok

Chemistry of hydrocarbon compounds

Production of hydrocarbon mixture from refuse or vegetation

From synthetic resin or rubber

585648, C07C 422

Patent

active

053269195

ABSTRACT:
A method is described for the recovery of high yields of monomers from waste and scrape polymeric materials with minimal amounts of char and tar. The process involves heating the polymer at a heating rate of at least 500.degree. C./sec in a flow-through reactor. Heating is accomplished by contacting the polymer with a heat transfer material such as hot incandescent sand. A flow-through reactor is used to provide the high heating rates and short reactor residence times for the monomer product. The flow through reactor may be a circulating fluidized bed reactor, an entrainment reactor, a cyclonic reactor or a gravity reactor.

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