Method of and apparatus for the removal of gaseous contaminants from flue gas or reduction of the content of gaseous contaminants in a flue gas
US5112588A · kind A · utility
Inventors
Key dates
| Filing date | Jul 24, 1990 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Jul 24, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/68
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Gaseous contaminants, especially sulfur dioxide, sulfur trioxide, hydrogen chloride or hydrogen fluoride are removed from flue gases by chemisorption. A solid finely divided sorbent, before being brought into contact with the flue gas, is treated in a reactor with dry steam. The sorbent before introduction into the reactor is brought to a temperature of 10.degree. to 50.degree. C. below the dewpoint temperature of the steam in the reactor and the steam injected into the reactor is introduced at a temperature not more than 60.degree. C. above the dewpoint temperature, preferably 10.degree. to 40.degree. C. above the dewpoint temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.