Mineral oils: processes and products – Phenolic or toxic oils
Patent
1980-12-30
1982-08-03
Sadowski, David R.
Mineral oils: processes and products
Phenolic or toxic oils
208 8LE, 208177, 210769, 210770, 210772, 210774, 210806, 585800, 585833, C10G 104
Patent
active
043426387
ABSTRACT:
An apparatus arrangement and method of operation for treatment of the residue from a coal liquifaction and hydrogenation reactor, which residue contains 5% to 10% solids and is at elevated temperature (f.i. above 700.degree. F.) and pressure of 150-200 psi. Said apparatus comprising a continuous pressure precoat filter sealed against pressure loss, a sealed repulper associated with said pressure filter for repulping filter cake in relatively cooler solvent while maintaining the pressure thereon at about 150-200 lbs/in..sup.2 to yield a slurry, then utilizing the pressure to force the slurry into and through a second pressure filter wherein to effect liquid solids separation; and separately discharging the filtrate and cake from the second filter.
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patent: 2561812 (1951-07-01), Morell et al.
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patent: 3598717 (1971-08-01), Sunagel et al.
Envirotech Corporation
Finch Robert R.
Sadowski David R.
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