Method for controlling a concentration of slurry in wet flue gas desulfurization apparatus
US4618482A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1984 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | Aug 23, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F11/464
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for controlling the concentration of a slurry in an absorption tower in which a flue gas comprising SO.sub.2 is brought into contact with a slurry containing suspended Ca compounds therein to absorb the SO.sub.2 with the compounds. The method comprises withdrawing the slurry from the absorption tower in such a way that the slurry is divided into at least two groups with different concentrations, one group being a slurry having a higher concentration of the Ca compound, the other group being a slurry having a lower concentration of the Ca compound, and regulating rates of the slurries being withdrawn from the absorption tower whereby the concentration of the Ca compound in the slurry being contacted with the flue gas is controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.