Process for the removal of ammonia from gases
US5180566A · kind A · utility
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3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1991 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | Jul 17, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In order to remove ammonia from water vapor-containing gases, in particular offgases, the gases are brought into intimate contact with warmed polyphosphoric acid, the polyphosphoric acid advantageously having a P.sub.2 O.sub.5 content of from 70 to 84% by weight and a temperature of from 120.degree. to 170.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.