Mineral oils: processes and products – Fractionation – Deasphalting
Patent
1991-06-20
1993-01-12
Morris, Theodore
Mineral oils: processes and products
Fractionation
Deasphalting
208311, 208314, 208315, 208318, C10G 2100, C10G 2102
Patent
active
051787504
ABSTRACT:
An improvement has been found in a process for producing Bright Stock from petroleum residuum by propane deasphalting and solvent refining. The extract of solvent refining is cooled to yield an aromatics-lean secondary raffinate which is recycled to propane deasphalting. An improved yield of Bright Stock is achieved over recycling extract to propane deasphalting.
REFERENCES:
patent: 4328092 (1982-05-01), Sequeira, Jr.
patent: 4592832 (1986-06-01), Bristow et al.
patent: 5039399 (1991-08-01), Sequeira, Jr.
Griffin Walter D.
Morgan Richard A.
Morris Theodore
Park Jack H.
Priem Kenneth R.
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