Hydrogen manufacture using pressure swing reforming
US7914764B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2004 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Nov 12, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention provides a method for generating high pressure hydrogen at improved thermal efficiencies. First a synthesis gas stream at a first pressure is produced in a pressure swing reformer. Next the synthesis gas stream is subjected to a high temperature water gas shift process to produce a hydrogen enriched stream from which high pressure hydrogen is obtained. Specific embodiments of the invention involve: regenerating the reformer at a pressure lower than the synthesis gas generation; operating the synthesis gas generation step at conditions sufficient to provide a syn gas stream at a temperature in the range used in the water gas shift reaction; and using pressure swing adsorption to separate the hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.