Purification method by hydrogen adsorbtion with cogeneration of CO2 stream pressure
US8192527B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2007 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Nov 10, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a method of producing hydrogen of very high purity from a feed predominantly containing said hydrogen and a minor part of impurities mainly consisting of carbon dioxide, carbon monoxide, methane and heavier hydrocarbons. The purification method by hydrogen adsorption using a desorption stage at a lower pressure than the pressure of the feed, such as a PSA method for example, allows to produce the desorption stream and notably to recover the carbon dioxide under pressure and high-purity hydrogen, with a high yield. These performances are obtained by combining the successive stages of the method according to the invention with the use of a new family of adsorbent whose dynamic capacity at a high desorption pressure is greater than that of conventional adsorbents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.