Process for rapidly drying a wet, porous gel monolith
US5243769A · kind A · utility
22Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1992 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Jun 26, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B21/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process and apparatus are described for rapidly drying a wet, porous gel monolith of glass or ceramic, at subcritical temperatures without inducing any cracking of the gel. The wet gel in immersed in a liquid solvent in a chamber, and the liquid solvent is then heated and expelled from the chamber. Further heating, with or without the presence of a flowing inert gas, fully dries the wet gel. When an inert gas is used, the gas is delivered to the chamber with a controlled solvent partial vapor pressure, to correspondingly control the driving force for drying the gel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.