In situ apparatus for furnace off-gas constituent and flow velocity measurement
US11921036B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Sep 9, 2019 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Mar 19, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optically based combustion off-gas stream velocity sensor assembly is provided for detecting in real-time off-gas flow velocity and/or volume as it moves through a flue duct. The sensor assembly includes two paired coherent light emitters and optic sensors, positioned in a spaced orientation in the flow path direction. The light emitter/optic sensor pairs operate to emit and detect across the off-gas stream coherent light beam energy having a wavelength component corresponding to an absorption profile of an off-gas species component. The detection of non-absorbed portions of the emitted beam is used to identify and detect the movement of a flow species signature at different locations along the flue duct.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.