Configurations and methods of acid gas removal
US7637987B2 · kind B2 · utility
50Cited by
9References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 2003 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Jun 14, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A plant includes a vacuum stripper (118) that receives a lean hydrogen sulfide-containing physical solvent (32) and in which substantially hydrogen sulfide-free stripping gas (51,52) is provided by at least one of a high-pressure flash vessel (110) and a medium pressure flash vessel (112). Contemplated configurations advantageously extend the range of use for physical solvents to treat sour gas comprising carbon dioxide and hydrogen sulfide, and can be used to meet most pipeline specification of 4 ppm hydrogen sulfide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.