Hydrogen sulfide analyzer
US5981289A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1998 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Oct 13, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/25875
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A hydrogen sulfide analyzer that continuously samples waste water from a waste stream or reservoir and measures the concentration of purgeable H.sub.2 S present (H.sub.2 SP) This information, when combined with the volume of water present, provides a control quality signal that regulates the feed rate of the destructor chemical into the waste stream. This results in chemical savings for the user. A second result is the reduction in odor complaints and the corrosion problems associated with H.sub.2 S emissions. The analyzer measures only the purgeable H.sub.2 S contained in the liquid sample. The analyzer violently agitates the sample containing dissolved H.sub.2 S in solution to simulate actual conditions at points of agitation in the waste water stream. It also provides nearly optimal partial pressure conditions for the H.sub.2 S to exit the solution as a free gas. Any H.sub.2 S that does not come out of solution in the analyzer is not of interest to the user since it will most likely not come out of solution in the treatment process either. The analyzer controls the feed of the destructor chemical based upon the measured quantity and concentration of H.sub.2 S that is likely to c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.