Apparatus for melting and cracking amorphous polyolefin

Details Apparatus for melting and cracking amorphous polyolefin Apparatus for melting and cracking amorphous polyolefin

1975-12-08

1976-12-21

Wolk, Morris O.

Chemistry: physical processes

Physical processes

Crystallization

23263, 23280, B01J 100, C07C 326

Patent

active

039985954

ABSTRACT:
Melting and cracking of amorphous polyolefin are carried out with a relatively small quantity of heat consumption and also with easiness in separating sludge, in converting it into oil by maintaining amorphous polyolefin at a high temperature of about 130.degree. - 300.degree. C for a relatively long time alone or together with a petroleum hydrocarbon oil to reduce the viscosity of the resultant melt to 5 - 250 CP, spraying the resultant melt upon lumps of amorphous polyolefin, separating impurities in the lumps as sludge, cracking the resultant molten mixture at a temperature of about 250.degree. - 450.degree. C and recovering oily products. For that purpose an apparatus comprising a combination of a holding tank for melt of amorphous polyolefin, a vessel for melting amorphous polyolefin equipped with a perforated plate or a wire-netting, a revolving shaft, a stirrer, etc., and a thermally cracking vessel equipped with a stirrer, a distillation means, and auxiliary means such as heating furnaces, pumping means for the melt and heating medium, is used.

REFERENCES:
patent: 2395829 (1946-03-01), King
patent: 2461004 (1949-02-01), Soday
patent: 2470361 (1949-05-01), Miller et al.
patent: 2998395 (1961-08-01), Ablert et al.
patent: 3441628 (1969-04-01), Ratzsch et al.

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