Method and apparatus for drying a solid material wetted with a solvent or solvent mixture
US4621437A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 12, 1984 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Dec 12, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B21/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a method of drying a solid wetted with a solvent or solvent mixture by causing superheated vapour of the solvent or solvent mixture as a carrier medium to flow through the material to be dried in an evaporation room, the solvent or solvent mixture evaporating and being carried along with the carrier medium, and by then causing the evaporated solvent or solvent mixture to condense from the carrier medium, if desired after compression thereof, in a cooling device. During this drying process a sub-ambient pressure is provided in the evaporation room and the temperature in the evaporation room is controlled by adjusting the sub-ambient pressure, if desired, in combination with an additional temperature controlling means. The inventiona also relates to a device for using the above method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.