Sodium-based dechlorinating agent and waste treatment equipment
US6949226B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 25, 2001 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | May 8, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23J2215/60
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A sodium-based dechlorinating agent is added to a flue gas; hydrogen chloride contained in this flue gas is removed as residue of dechlorination; the thus removed residue of dechlorination is dissolved by adding water; water-insoluble constituents are separated from the resulting aqueous solution; and after adjusting pH of the aqueous solution remaining after separation of the water-insoluble constituents, mercury, dioxin, and the like are removed and discharged. The sodium-based dechlorinating agent is mixed with a hydrophilic anti-caking agent, with an angle of repose of 40° or more, a dispersibility of less than 50, and a floodability index value of less than 90. This permits inhibition of occurrence of a pressure drop and leakage in the filter cloth of the dust collector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.