Chemistry of hydrocarbon compounds – Production of hydrocarbon mixture from refuse or vegetation – From synthetic resin or rubber
Patent
1998-05-28
2000-05-09
Griffin, Walter D.
Chemistry of hydrocarbon compounds
Production of hydrocarbon mixture from refuse or vegetation
From synthetic resin or rubber
201 25, 201 25, 208 49, 208400, 208415, C10G 100
Patent
active
060606312
ABSTRACT:
A process for the conversion of plastic to produce a synthetic crude oil by means of separating a liquefied plastic into a lower boiling fraction and a higher boiling fraction containing non-distillable particulate matter which is admixed with a hydrocarbonaceous recycle stream and filtered. The filtered stream having a reduced concentration of finely divided particulate matter and the distillable lower boiling stream together with hydrogen is contacted with a hydro-demetallization catalyst in a hydro-demetallization zone. The effluent from the hydro-demetallization zone is contacted with a hydrocracking catalyst in a hydrocracking zone to produce lower boiling hydrocarbons suitable for use as a synthetic crude oil and to produce gaseous, water-soluble inorganic compounds. A recovered hydrogen-rich gaseous stream is preferably recycled to the hydro-demetallization zone. The gaseous, water-soluble inorganic compounds are removed by scrubbing the hydrocracking zone effluent with an aqueous stream. A portion of the hydrocarbons recovered from the hydrocracking zone effluent is recycled to aid in filtration.
REFERENCES:
patent: 4818368 (1989-04-01), Kalnes et al.
patent: 5969201 (1999-10-01), Kalnes et al.
James, Jr. Robert B.
Kalnes Tom N.
Cutts, Jr. John G.
Griffin Walter D.
Preisch Nadine
Spears Jr. John F.
Tolomei John G.
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