Back to results
US 4,851,601 AGranted
Processing for producing hydrocarbon oils from plastic waste
AssigneeMobil Oil Corporation
InventorsTakashi Fukuda, Kiyoshi Saito, Satoru Suzuki, Hideki Sato, Toshio Hirota
Life of this patent
Estimating the term…
Abstract
Plastic scrap, especially of polyolefin plastics, is converted to low pour point oils by thermal cracking in the liquid phase followed by catalytic conversion of the vaporous cracking products over an intermediate pore size zeolite such as ZSM-5.
Claims8
A process for producing a hydrocarbon oil of low pour point from plastic waste material, which comprises:
- (i) thermally cracking molten plastic waste material in the liquid phase and
- (ii) contacting the thermal cracking products from (i) with an intermediate pore size zeolite at a temperature from 200.degree. to 340.degree. C. in the vapour phase to effect a catalytic cracking of the thermal cracking products.
Dependencies are inferred from the claim text.