Adsorptive separation process
US5015272A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1989 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | May 16, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/156
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An adsorptive separation process of the present invention relates to a process for separating hydrogen and/or helium by a pressure swing adsorption process using four or more adsorbent beds. Each adsorbent bed manipulates the individual steps of adsorption, equal depressurization, cocurrent depressurization, countercurrent depressurization, purging, equal pressurization, product pressurization and raw gas pressurization while sequentially switching them and carries out the raw gas pressurization step for applying pressure with raw gas as the final step for pressuring the adsorbent bed to the adsorbent pressure. Accordingly, a variation in pressure and flow rate can be suppressed, product can be attained stably, and the amount of product can be increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.