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Volume 40 Issue 10
Oct.  2022
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Article Navigation >  ENVIRONMENTAL ENGINEERING  > 2022  >  40(10): 156-161
Zhang Lihua, Dai Xuefang, Bao Yuhai, Wu Jiechun, Yu Changshui. INVERSION OF CHLOROPHYLL-A CONCENTRATION BASED ON TM REMOTESENSING IMAGE IN WULIANGSUHAI LAKE[J]. ENVIRONMENTAL ENGINEERING , 2015, 33(6): 133-138. doi: 10.13205/j.hjgc.201506030
Citation: FENG Lizhong, CONG Riqiang, LIU Yi, QI Yanfang. MICROMIXER IMPROVEMENT AND VERIFICATION FOR AN SCR DENITRATION SYSTEM OF A 330 MW COAL-FIRED POWER UNIT BASED ON CFD[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(10): 156-161. doi: 10.13205/j.hjgc.202210021
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MICROMIXER IMPROVEMENT AND VERIFICATION FOR AN SCR DENITRATION SYSTEM OF A 330 MW COAL-FIRED POWER UNIT BASED ON CFD

doi: 10.13205/j.hjgc.202210021

  • 1. Hebei Cleaner Production Technology Service Center, Shijiazhuang 072550, China;

  • 2. Shenyang Shanshuiyuan Environmental Tech Co., Ltd, Shenyang 110013, China;

  • 3. Central Research Institute of Building & Construction, Beijing 100088, China;

  • 4. Hebei Bide Environmental Tech Co., Ltd, Shijiazhuang 050090, China

  • Received Date: 2021-01-28
    Abstract
  • In this paper, the flow velocity, temperature, ammonia concentration, and flow direction of flue gas in the SCR denitration system of a 330 MW coal-fired power unit were simulated by three-dimensional numerical simulation, and then the numerical simulation results were verified by a physical model. The results showed that the trapezoidal micromixer had the advantages of simple processing, large disturbance range, large pressure loss, and great influence on the downstream velocity field; the twisted vane micromixer had lower resistance and effect on the downstream velocity field, but smaller disturbance range and higher requirements on the installation angle. The comprehensive performance of hexagonal micromixer was between trapezoidal micromixer and twisted vane micromixer. The hexagonal micromixer could better realize the mixing of NH3 and flue gas, and the uniformity of downstream velocity field and NH3 concentration met the design requirements.
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    • References(14)
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