Process and equipment for the treatment and recovery of solvent vapors by recycling on active charcoal
US4859216A · kind A · utility
49Cited by
23References
12Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Mar 25, 1988 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Mar 25, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/416
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method and equipment for recovering solvent from a gaseous waste by adsorption of the solvent on active charcoal in fiber form followed by desorption with a gaseous regenerating fluid which can be hot air or a neutral fluid including nitrogen. The equipment includes one or more adsorption-desorption assemblies containing the active charcoal and a system for recovering the solvent wherein the adsorbed solvent is converted into a vapor, the solvent vapor and any water vapor present is condensed and the condensates are separated. The gaseous regenerating fluid is circulated in a closed circuit through the assembly and the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.