Method for sulfur compounds removal from contaminated gas and liquid streams
US7651550B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2003 |
| Grant date | Jan 26, 2010 |
| Priority date | — |
| Expiry date | May 24, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/40088
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A desorption process and a process for producing a catalytically deactivated formed zeolitic adsorbent, whereby both processes are suitable to improve the lifetime of a formed zeolitic adsorbent in the removal of sulfur compounds from sulfur contaminated gas and liquid feed streams. The adsorbent is in particular a synthetic 13X or LSX faujasite with a silica to alumina ratio from 1.9:1.0 to about 3.0:1.0. The cations of the faujasite include alkali and alkaline earth metals. The formed zeolite mixture is preferably catalytically deactivated due to a phosphate treatment. The desorption is carried out thermally, wherein the heat treatment is done at different temperature stages to avoid decomposition of the organic sulfur compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.