Process and apparatus for removal of ammonia in a liquid ammonia fabric treating system
US4189847A · kind A · utility
1Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1977 |
| Grant date | Feb 26, 1980 |
| Priority date | — |
| Expiry date | Dec 15, 1997 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06B19/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process and apparatus are disclosed for removing ammonia from fabric which has been previously treated with liquid ammonia, by subjecting the fabric to a solution of water saturated with ammonia maintained at a temperature level high enough to vaporize ammonia in the fabric without requiring commercially uneconomical input of heat energy. Subsequent steps remove the remainder of the ammonia and water trapped in the fabric, the system providing essentially complete recovery of all ammonia at substantially reduced heat energy expenditure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.