Process for drying and solvent-extraction of solids and sludges

Details Process for drying and solvent-extraction of solids and sludges Process for drying and solvent-extraction of solids and sludges

1991-06-10

1993-10-26

Manoharan, Virginia

Concentrating evaporators

Processes

Involving waste liquid

34 9, 34 10, 34 57R, 159 21, 159 172, 159 173, 159 201, 159901, 159DIG8, 202174, 203 14, 203 71, 203 88, 210712, 210770, 210806, B01D 126, C02F 104

Patent

active

052562514

ABSTRACT:
A continuous evaporation process for drying water-wet waste solids and sludges, using a paraffin oil solvent, until the waste is dried to a near-zero wastewater product, without experiencing sticky solids. The invention involves (1) mixing the input solids or sludges with a paraffin oil solvent, (2) feeding the mixture into two or more stages of evaporation in parallel to evaporate some of the water present in the input solids or sludges and to extract some of the indigenous solvent-soluble compounds from the solids, (3) feeding the slurry from the parallel stages of evaporation to one or more final evaporation stages in series, and (4) feeding the slurry from the final stages of evaporation to a centrifuge or other device for separating most of the solvent from the solids.

REFERENCES:
patent: Re26317 (1967-12-01), Greenfield
patent: Re26352 (1968-02-01), Greenfield
patent: Re31185 (1983-03-01), Greenfield et al.
patent: 2888449 (1959-05-01), Borck
patent: 3716458 (1973-02-01), Greenfield et al.
patent: 3855079 (1974-12-01), Greenfield
patent: 3929586 (1975-12-01), Slikkers, Jr.
patent: 3950230 (1976-04-01), Greenfield et al.
patent: 4013516 (1977-03-01), Greenfield et al.
patent: 4097378 (1987-06-01), St. Clair
patent: 4270974 (1981-06-01), Greenfield et al.
patent: 4289578 (1981-09-01), Greenfield et al.
patent: 4336101 (1982-06-01), Greenfield et al.
patent: 4422940 (1983-12-01), Cousino et al.
patent: 4495161 (1985-01-01), Cameron et al.
patent: 4662990 (1987-05-01), Bonanno
patent: 4702798 (1987-10-01), Bonanno

Affiliated with

Also associated with

Rating

Process for drying and solvent-extraction of solids and sludges does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for drying and solvent-extraction of solids and sludges, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for drying and solvent-extraction of solids and sludges will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-956384