Mineral oils: processes and products – By treatment of solid mineral – e.g. – coal liquefaction – etc. – Specified procedure to improve separation of solids from...
Patent
1988-12-14
1991-02-19
Davis, Curtis R.
Mineral oils: processes and products
By treatment of solid mineral, e.g., coal liquefaction, etc.
Specified procedure to improve separation of solids from...
208425, C10G 100
Patent
active
049941755
ABSTRACT:
A method for dedusting synthetic oil is disclosed. A feed of dust-laden synthetic oil is dissolved in a non-polar solvent of at least one alkane containing from 4 to 7 carbon atoms and aggregates of dust material are formed. The dissolved dust-laden synthetic oil is then gravitationally separated into a substantially dedusted stream in a dust-enriched stream including aggregates formed in the dissolution step. The dissolution and gravitational separation steps are conducted at a temperature and pressure greater than about 150.degree. F. and about ambient pressure and less than about the critical point temperature and pressure of the solvent and the aggregates provide acceptable settling and sludge compression rates. Methods for producing and dedusting oil from synthetic fuel stock are also disclosed.
REFERENCES:
patent: 3661774 (1972-05-01), Masologites
patent: 4077881 (1978-03-01), Snell
patent: 4536277 (1985-08-01), O'Grady et al.
patent: 4544477 (1985-10-01), Taylor
Hargreaves Jay T.
Taylor James L.
Amoco Corporation
Davis Curtis R.
Kottis Nick C.
Magidson William H.
Medhurst Ralph C.
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