Electric Power ›› 2021, Vol. 54 ›› Issue (4): 213-220.DOI: 10.11930/j.issn.1004-9649.202011080

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Study on the Adaptability of Rotary Atomization Evaporation Technology to Desulfurization Wastewater and Flue Gas

LI Fei1,2,3   

  1. 1. Datang Environmental Science and Technology Research Institute, Beijing 100097, China;
    2. Datang Environment Industry Group Co., Ltd., Beijing 100097, China;
    3. Datang Electric Power Design and Research Institute, Beijing 100097, China
  • Received:2020-11-18 Revised:2021-01-28 Published:2021-04-23
  • Supported by:
    This work is supported by the Key Scientific and Technological Project of China Datang Corporation Ltd. (Demonstration and Research on Rotary Atomization and Evaporation of Desulfurization Wastewater, No.DTEG-KY-2018-022, Research on the Efficient Pretreatment Technology of Desulfurization Wastewater, No.DTEG-KY-2018-007)

Abstract: In this study, the experiments on rotary atomization evaporation of desulfurization wastewater were conducted. The adaptability of this technology to wastewater quality and flue gas parameters were studied, and the methods to optimize the performance of evaporation were analyzed. The results show that the rotary atomization evaporation technology for desulfurization wastewater are highly adaptable to the total dissolved solids (TDS) and suspended substance (SS) of wastewater, as well as the temperature and dust concentration of flue gas. Under appropriate experimental conditions, it shows great evaporation effect in which the moisture contents of dusts from both the outlet and bottom of the evaporation tower can be reduced to below 2%, no matter whether TDS reaches as much as 200000 mg/L, SS reaches 6%, temperature≥300 ℃, or dust concentration reaches as much as 30 g/m3. In addition, increasing the gas liquid ratio or the sprayer rotate speed can effectively lower down the moisture contents, which makes it feasible to be applied for the optimization of wastewater evaporation.

Key words: desulfurization wastewater, rotary atomization, adaptability, zero discharge, wastewater quality, flue gas parameter