Method for regenerating used absorbents derived from treatment of thermal generator fumes
US6960548B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2001 |
| Grant date | Nov 1, 2005 |
| Priority date | — |
| Expiry date | Nov 11, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J20/3483
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process and device for regeneration of a used absorbent from a desulfurization zone or from the desulfurization of a gas containing sulfur oxides, comprising regeneration simultaneously with filtering of the absorbent, in a reducing atmosphere, wherein partial combustion of a regeneration gas is also carried out upstream from regeneration, the products of the partial combustion being mixed with the used absorbent prior to the regeneration-filtration stage. The absorbent may be, e.g., solid absorbents based on magnesium oxide. The regeneration gas may be hydrogen sulfide and/or a hydrocarbon. For example, H2S can be partially combusted and the products of the partial combustion, including H2S, H2, SO2 and sulfur, mixed with the used absorbent prior to the regeneration-filtration stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.