Removal of ammonia from fuel cell power plant water system
US4801356A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 15, 1987 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Oct 15, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/21
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Ammonia which is present in fuel cell power plant water in free form, in ionic form, and in forms combined with carbon dioxide, is removed from the power plant water by steam stripping. Water which has been used to cool the fuel reformer effluent, and thus has become contaminated with ammonia, is fed to a first steam stripper wherein a first portion of the ammonia contaminant is removed. The partially stripped water is then fed to a second steam stripper wherein further amounts of ammonia are removed from the water with steam. The ammonia laden steam from the two strippers is combined and vented through a single vent thus conserving the amount of water lost from the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.