脱硫废水低温烟气蒸发零排放系统平衡计算  

Balance calculation for zero discharge system of desulfurization wastewater using low temperature flue gas evaporation method

作　　者：许甲清 叶春松[2] 李清 操容 朱文瑜 郑伟 梁巍 XU Jiaqing;YE Chunsong;LI Qing;CAO Rong;ZHU Wenyu;ZHENG Wei;LIANG Wei(Hubei Energy Group Co,Ltd.,Wuhan 430000,China;School of Power and Mechanical Engineering,Wuhan University,Wuhan 430000,China;Chengdu Raise Environmental Technology Co,Ltd,Chengdu 610000,China)

机构地区：[1]湖北能源集团股份有限公司,湖北武汉430000 [2]武汉大学动力与机械学院,湖北武汉430000 [3]成都锐思环保技术股份有限公司,四川成都610000

出　　处：《热力发电》2021年第2期97-103,共7页Thermal Power Generation

摘　　要：2019年7月在湖北鄂州发电厂投运了一套利用低温烟气余热蒸发脱硫废水的零排放处理系统。为了优化该系统运行操作参数,在投运初期调整试验过程中采用系统水平衡、盐平衡和热量平衡等计算方法进行了平衡试验研究。结果表明:在系统稳定运行条件下,处理脱硫废水能力达到16.19 m3/h;系统烟气放热和浆液吸热基本达到平衡;排泥量(泥与废水质量比)控制在0.165可维持系统盐平衡。A zero discharge treatment system using residual heat from low-temperature flue gas to evaporate desulfurization wastewater was put into operation in Ezhou Power Plant in Hubei province in July 2019.To optimize the operating parameters of this system, a balance test was carried out during the adjustment test at the initial stage of operation. The calculation methods and results of water balance, salt balance and heat balance of the system were introduced. The test results show that, under stable operating conditions, the system’s ability to treat desulfurized wastewater reaches 16.19 m~3/h, the system’s flue gas heat release and slurry heat absorption basically reaches equilibrium, and the sludge discharge ratio is controlled at 0.165(mass ratio of sludge to wastewater) to maintain the system salt balance.

关 键 词：脱硫废水 低温烟气蒸发 零排放 热平衡 水平衡 盐平衡 

分 类 号：TM628[电气工程—电力系统及自动化]