Recovery of cracking feed and asphalt
United States Patent 2882219

Inventors:
Johnson, Paul H.
Publication Date:
04/14/1959
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Assignee:
PHILLIPS PETROLEUM CO
Primary Class:
208/86
Other Classes:
208/315, 208/334, 208/338, 208/327, 208/87, 208/335, 208/309, 208/96
International Classes:
C10G21/00
US Patent References:
2681301Process for removal of complex high molecular weight aromatic constituents from high boiling oils
2700637Process for the removal of asphaltic constituents from residual oils
2727853Process for refining of petroleum, shale oil, and the like