烟气冷凝法处理湿法脱硫烟气数值模拟与应用研究  

Numerical Simulation and Application Research of Wet Desulfurization Flue Gas Treated by Flue Gas Condensation

作　　者：李健 张莉 LI Jian;ZHANG Li(Shanghai Power Equipment Research Institute Co.,Ltd.,Shanghai 200240,China;College of Energy and Mechanical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海发电设备成套设计研究院有限责任公司,上海200240 [2]上海电力大学能源与机械工程学院,上海200090

出　　处：《动力工程学报》2024年第11期1741-1749,共9页Journal of Chinese Society of Power Engineering

摘　　要：采用数值计算方法,对烟气冷凝法的烟气流动、传热、水蒸汽冷凝及SO_(2)、NO脱除等过程进行数值模拟。在额定工况下,对烟气冷凝法的效果进行测试,验证该技术对烟气温降、烟气阻力、水蒸气冷凝、粉尘脱除以及SO_(2)和NO脱除的效果。结果表明:在烟气超净排放的基础上,烟气冷凝法不仅能够回收烟气中的水分,还对烟气中SO_(2)、NO、粉尘等污染物具有一定的脱除效果,能够进一步提升火电机组的环保性能;对比数值模拟结果和测试结果,烟气冷凝器出口温度、水蒸气凝结率、NO的脱除率偏差的数值模拟结果与测试数据基本一致,烟气流动压损数据偏差约9.9%,SO_(2)脱除率数据偏差约14.7%,偏差在工程可接受范围内。The processes of flue gas flow,heat transfer,water vapor condensation,and SO_(2)and NO removal of the flue gas condensation method were all numerically simulated.To confirm the impact of the technology on flue gas temperature reduction,flue gas resistance,water vapor condensation,and removal of dust,SO_(2)and NO,performance test of the flue gas condensation method was carried out under the rated working condition.Results show that,based on ultra-clean flue gas emission,the flue gas condensation method can effectively remove SO_(2),NO,dust,and other pollutants from flue gas in addition to recovering water from flue gas,further enhancing the environmental performance of thermal power plants.Compared with the performance test results,the numerical simulation results of flue gas condenser outlet temperature,water vapor condensation rate,and NO removal rate are basically consistent with the performance test data,and the deviation of flue gas flow pressure loss data is about 9.9%,and the deviation of SO_(2)removal rate data is about 14.7%,which are within the acceptable range for engineering.

关 键 词：烟气冷凝法 SO_(2) NO 脱除 数值模拟 

分 类 号：X701[环境科学与工程—环境工程]