Apparatus and method for measuring two-dimensional gas-phase Na concentration field and temperature field of boiler

Abstract

The invention discloses an apparatus and method for measuring a two-dimensional gas-phase Na concentration field and a temperature field of a boiler. The apparatus comprises a mirror bar, a camera protection shell and a color CCD camera, wherein a first end of the mirror bar is provided with a cooling air outlet, and a second end of the mirror bar is provided with a cooling air inlet; a high-temperature-resistant lens, three optical imaging lenses and a narrow-waveband three-channel optical filter are successively arranged from the first end to the second end of the mirror bar; the camera protection shell is connected with the second end of the mirror bar; the color CCD camera is arranged in the camera protection shell, the color CCD camera is provided with a power supply interface for powering the color CCD camera and a network interface for transmitting data and a control signal, when the first end of the mirror bar enters the boiler, the radiation light of flame in the boiler successively passes by the high-temperature-resistant lens, the three optical imaging lenses and the narrow-waveband three-channel optical filter to enter a sensor of the color CCD camera so as to generatethree single-color flame images with different wavelengths.

Description

technical field [0001] The invention relates to the technical field of boiler detection, in particular to a device for measuring two-dimensional gas phase Na concentration field and temperature field of a boiler and a method for measuring two-dimensional gas phase Na concentration field and temperature field of a boiler. Background technique [0002] Xinjiang Zhundong coal is an important coal resource discovered in recent years, with an estimated reserve of 390 billion tons. It is currently the largest proven coal field in China. The Zhundong coalfield has the advantages of low mining cost, good coal reactivity, low sulfur content, and easy burnout. But on the other hand, the Zhundong coalfield is a marine sedimentary type, and the content of K and Na in the primary minerals of the coal is relatively high, especially the content of Na. Studies have shown that the overall content of Na in the ash is more than 2%, and the Na in the coal is water-soluble. Mainly. Water-solub...

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Problems solved by technology

Water-soluble Na easily enters the gas phase during the combustion process, and the gas-phase Na is prone to condensation when the high-temperature flue gas flows through the heating surface of the boiler, which in turn causes slagging, which affects the safe and economical operation of the boiler and seriously restricts the use of Zhundong Coal in power plant boilers. large-scale use of

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