Process for generating heat to reduce the emission of oxides of sulphur and reduce adsorbent consumption
US6817304B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2001 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | May 12, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23J2219/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
For reducing emissions of oxides of sulphur:a) a sulphur-containing fuel is burned in a combustion zone comprising a heat exchange zone in which at least a portion of the heat is extracted, and effluents or combustion fumes are recovered at a temperature in the range 800° C. to 1200° C.;b) the fumes resulting from said combustion, charged with oxides of sulphur, traverse a space for supplying and distributing the fumes to a desulphurisation apparatus functioning with an internal recycle of a solid oxide of sulphur adsorbent;c) the adsorbent is injected into said space;d) the fumes are caused to enter said apparatus;e) the fumes are caused to penetrate into a convection exchange zone and at least a portion of the heat is extracted from said fumes;f) the mixture resulting from steps b) and c) is separated in a gas/solid separation zone and a portion of the gaseous effluent that has been freed of the major portion of the oxides of sulphur and at least partially cooled is evacuated, and said adsorbent particles comprising said sulphur-containing compounds are evacuated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.