Indirect gas species monitoring using tunable diode lasers
US6859766B2 · kind B2 · utility
3Cited by
17References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2003 |
| Grant date | Feb 22, 2005 |
| Priority date | — |
| Expiry date | Feb 11, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for indirect gas species monitoring based on measurements of selected gas species is disclosed. In situ absorption measurements of combustion species are used for process control and optimization. The gas species accessible by near or mid-IR techniques are limited to species that absorb in this spectral region. The absorption strength is selected to be strong enough for the required sensitivity and is selected to be isolated from neighboring absorption transitions. By coupling the gas measurement with a software sensor gas, species not accessible from the near or mid-IR absorption measurement can be predicted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.