Apparatus for recovery of solvent vapor in a drying process
US4788776A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1987 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Mar 16, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/401
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The apparatus recovers solvent vapor and is used in a process for drying goods. A closed system of pipes guides an air flow through a heat exchanger comprising a condenser and an air heater. The system of pipes has a blower for providing a circulation forming this air flow and a switching means for the air flow comprising a plurality of valves and at least one pipe segment by which an adsorber is connectable in series in the circulation with a processing container. The adsorber is connectable by the blower or directly in the circulation with an outlet of the processing container. Advantageously at least one other pipe segment bypassing the heat exchanger with the switching means is provided so that the circulation only runs through the processing container, the blower and the adsorber without running through the heat exchanger. Furthermore at least one additional pipe segment and at least one additional switching means are provided bypassing the processing container. Advantageously also one device for sensing the equality of the vapor concentrations at the entrance and outlet to the adsorber can be provided as well as another associated device for control of the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.