Process for the separation or purification of mixtures by the use of a solid adsorption
US4324566A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1980 |
| Grant date | Apr 13, 1982 |
| Priority date | — |
| Expiry date | Jul 2, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/401
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for continuously separating the constituents of a mixture characterized in that it consists in introducing the gaseous mixture in an enclosure containing a selective adsorption agent or adsorbent, and subjecting the said mixture to a cyclical series of hot and cold steps induced by sudden variations of temperature between a temperature T.sub.c called the "hot temperature" and a temperature T.sub.F called the "cold temperature" in order to create in the cold steps three distinct zones moving in the flow-direction at different speeds: PA0 a zone of low-speed propagation comprising a sorption front in which the concentration of gas having the most adsorbable constituents decreases; PA0 a zone called the "thermal wave" induced at times determined by the sudden cooling of the load mixture; PA0 a desorption zone where the mixture is enriched in the most adsorbable constituents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.