Ammonia stripper
US8939676B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2012 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Feb 14, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2209/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for removing ammonia from landfill leachate comprising an economizer for producing high pressure hot water in a hot water circuit from heat exchange with a hot gas stream carrying waste heat; a boiler which is heated by the high pressure hot water to produce steam; and an ammonia stripper. The ammonia stripper has a leachate inlet connected to a leachate flow path, and an ammonia containing gas outlet. A leachate discharge outlet is connected to a leachate discharge flow path, and a steam inlet is provided which is connected to the boiler by a conduit. At a lower end of the ammonia stripper there is a forced air inlet. A randomly packed bed located between the upper end and the lower end. In use there is a flow of steam and air in one direction and of leachate in the opposite direction which releases ammonia from the leachate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.