Multi-spectral infrared imaging system for flare combustion efficiency monitoring

摘要

The multi-spectral imaging system for real-time measurement of combustion efficiency of an industrial flare is provided. The system includes four spectral bands, one for a hydrocarbon group (fuel), one for carbon dioxide (CO2), product of complete combustion), one for carbon monoxide (CO, product of partially completed combustion), and one for background reference. More spectral bands can be added to measure combustion efficiency of specific compounds or enhance the background reference adjustment. The analysis apparatus includes a machine readable storage medium, which provides instructions that cause the analysis apparatus to perform operations to obtain the combustion efficiency of the flare. The operations includes acquiring at least three spatially and temporally synchronized intensities from an imaging unit capturing images of the flare, and producing the combustion efficiency of the flare from said at least three intensities, and absorption coefficients of materials contained in the flare.

主权项

1. A multi-spectral imaging system for measurement of combustion efficiency of a flare, comprising:
an imaging unit capturing images of the flare, the imaging unit producing at least three spatially and temporally synchronized intensities from the images of the flare, a first intensity of said at least three intensities representing an amount of a first material contained in the flare, a second intensity of said at least three intensities representing an amount of a second material contained in the flare, a third intensity of said at least three intensities representing an amount of a third material contained in the flare, the first material including fuel, the second material including carbon dioxide; and an analysis apparatus coupled to the imaging unit, the analysis apparatus including a machine readable storage medium which provides instructions that cause the analysis apparatus to perform operations to obtain the combustion efficiency of the flare, the operations comprising:
acquiring said at least three intensities from the imaging unit;retrieving a first absorption coefficient, a second absorption coefficient and a third absorption coefficient, which are stored in the machine readable storage medium, the first absorption coefficient being an absorption coefficient of the first material, the second absorption coefficient being an absorption coefficient of the second material, the third absorption coefficient being an absorption coefficient of the third material;retrieving a weighted average carbon number of the fuel, which is stored in the machine readable storage medium; andproducing the combustion efficiency of the flare from said at least three intensities, the first absorption coefficient, the second absorption coefficient, the third absorption coefficient and the weighted average carbon number of the fuel.