Process for treating a waste gas
US4108959A · kind A · utility
10Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1977 |
| Grant date | Aug 22, 1978 |
| Priority date | — |
| Expiry date | Jul 29, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/68
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for treating a waste gas containing SO.sub.2 and HCl which comprises determining the amount of HCl in said waste gas and supplying at least one magnesium salt selected from the group consisting of MgSO.sub.4, MgSO.sub.3, MgO, MgCO.sub.3 and Mg(HSO.sub.3).sub.2 in an amount corresponding to the amount of HCl additionally supplying CaCO.sub.3 or Ca(OH).sub.2 as an absorbent for SO.sub.2 to a column for treating said waste gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.