Solvent recovery process
US4432837A · kind A · utility
3Cited by
9References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1982 |
| Grant date | Feb 21, 1984 |
| Priority date | — |
| Expiry date | Jul 13, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process of recovering organic solvent from a liquid waste product which waste product is heat convertible by the steps of: PA1 (a) dispersing the liquid waste product in particulate form in water, in the presence of a bentonite or hectorite clay; PA1 (b) heating the dispersion to boiling point to strip off steam and organic solvent vapor; PA1 (c) condensing the evolved steam and orgnic vapor and separating the water therefrom; and PA1 (d) recovering the residue as an aqueous free-flowing slurry of solid granule particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.