Hydrogen and carbon dioxide coproduction
US6500241B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2000 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Dec 19, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A gas production plant has a first separator receiving a feed gas and produces a first offgas stream and a first product stream, and a second separator receives the first offgas stream and produces a second product stream and a second offgas stream. A liquefaction unit receives at least part of the first product stream and at least part of the second offgas stream, and produces a third product stream and a third offgas stream. A first portion of the third offgas stream is combined with the first offgas stream, and a second portion of the third offgas stream is used as a non-waste gas. In a method of removing a first and a second gaseous component from a feed gas, a PSA unit produces a first product stream and a first offgas stream. The first offgas stream is fed into a liquefaction unit that produces a second product stream and a second offgas stream, and at least part of the second offgas stream is recycled into the PSA unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.