Deodorization and cleaning of medium temperature wet off-gases derived from burning of wet waste sludge
US4901654A · kind A · utility
11Cited by
4References
6Claims
0Family size
Inventors
Key dates
| Filing date | Jul 15, 1988 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Jul 15, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/40
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Medium temperature (500.degree. F.-1100.degree. F.) wet off-gases from the final drying zone of counterflow incineration of waste sludge are scrubbed and cooled before heating to final high temperature in an afterburner and the resulting hot dry gases are used to preheat the scrubbed and cooled gases prior to entry of said gases into the afterburner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.