华电技术 ›› 2020, Vol. 42 ›› Issue (9): 82-87.

• 节水与废水零排放 • 上一篇    下一篇

机械雾化蒸发脱硫废水的理论研究与实践

  

  1. 1.国家能源费县发电有限公司,山东 临沂 273425; 2.华北电力大学 环境科学与工程系,河北 保定 071003
  • 出版日期:2020-09-25

Theoretical study and practice of desulfurization wastewater vaporization by mechanical atomization

  1. 1.National Energy Feixian Power Generation Company Limited,Linyi 273425, China; 2.Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China
  • Published:2020-09-25

摘要: 以燃煤电厂生产过程中产生的脱硫废水为研究对象,探讨采用机械雾化蒸发技术处理脱硫废水。通过理论研究,找出影响蒸发的主要因素包括液滴直径、温度、风速等,针对现有自然蒸发技术的不足,将自然蒸发技术与加装雾化装置、增加水体热量以及增加蒸发过程中风的流速等强化蒸发技术相结合,由此形成了机械雾化蒸发技术。目前,机械雾化蒸发技术在燃煤电厂脱硫废水处理、煤化工废水处理等领域均有应用,取得了一定的成效,但使用过程中要注意防范可能造成的环境污染。这一技术依旧存在一些不足,今后可以采取多能耦合等方法进行改进,使机械雾化蒸发真正成为低成本的零排放技术。

关键词: 脱硫废水, 机械雾化蒸发, 自然蒸发, 强制蒸发, 多能耦合

Abstract: Taking the desulfurization wastewater produced from the operation of coal-fired power plants as the research object, the mechanical atomization evaporation technology applied for treating desulfurization wastewater is discussed.To make theoretical study, the main factors affecting evaporation are found out, which includes droplet diameter, temperature and wind speed. Then,based on the shortcomings of the existing natural evaporation technology,this technology is improved by installing atomization devices, increasing the heat of water body, and accelerating the wind velocity during the evaporation process, which integrates and turns out to be the mechanical atomization evaporation technology.At present,the mechanical atomization evaporation technology can effectively treat the desulfurization wastewater in coal-fired power plants and the wastewater from coal chemical industry, and has achieved favorable outcomes. However, application of this technology might lead to environmental pollution.To overcome these shortcomings, the mechanical atomization evaporation technology can be improved by adopting multi-energy coupling,which can realize its low-cost zero-emission operation.

Key words: desulfurization wastewater, mechanical atomization evaporation, natural evaporation, mandatory evaporation, multi-energy coupling