Apparatus for use in pressure and temperature swing adsorption processes
US6293998A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1998 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Dec 11, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus for pressure and temperature swing adsorption processes is described. Such processes include pressure swing adsorption, temperature swing adsorption, and sorption cooling. The apparatus, a spirally wound module, provides high efficiency gas separations by reducing the differential pressure required between the adsorption pressure and the desorption pressure. The apparatus comprises an adsorption zone containing at least one adsorbent paper layer containing a selective adsorbent and an adsorbent spacer spirally wound about a hollow mandrel and in intimate thermal contact with a heat transfer zone. For pressure and temperature swing processes, the adsorption zone is disposed on the outside of the heat transfer zone, and for sorption cooling processes, the heat transfer zone is disposed on the outside of the adsorption zone and the adsorption zone is contained in an envelope-like leaf. The apparatus provides an opportunity to de-couple a purge step from the heating step in thermal swing adsorption with a resulting improvement in efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.