Study on the distribution and optimization control of SCR denitration system flue gas flow field

Abstract

Abstract:

The optimization for flue gas field of international and domestic SCR denitration systems is limited to the optimizing of deflector design through numerical and physical simulations, and the results are unstable. Based on the uniformity detection for flue gas field at SCR denitration inlet during operation, and the internal inspection for denitration flue duct during shutdown, the design and numerical simulation for ammoniasmoke mixed flow spoiler at denitration inlet were executed, and the optimum flow spoiler was selected and installed. The ammonia injecting adjustment was made after the project, and the flow field of SCR denitration system was optimized.The project reduced the ammonia consumption for denitration and the production of NH4HSO4, also alleviate the blockage of air preheaters and the wear and blockage of the denitration catalyst.At the same time, it provides reference and technical support for other similar units in solving the problems above.

Key words:

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">SCR, flow field optimization, ammoniafont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">smoke mixer, NHfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">4HSOfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">4, air preheater, denitration, catalyst

LIN Qing.

Study on the distribution and optimization control of SCR denitration system flue gas flow field [J]. Huadian Technology, 2019, 41(12): 58-62.

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Study on the distribution and optimization control of SCR denitration system flue gas flow field

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