Method for removing HCl and HF from coal derived fuel gas
US5118480A · kind A · utility
8Cited by
23References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1990 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Jun 25, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/68
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process is provided for the removal of HCl and HF from a hot gas stream concurrently with the removal of sulfur compounds. The process involves the introduction of an HCl/HF sorbent such as nahcolite, sodium bicarbonate, sodium carbonate or Trona in powder form into the process stream at any one or all of four alternative locations in an amount sufficient to break down the HCl and HF into solid salts which are subsequently removed from the stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.