| 增压富氧燃烧回收烟气水分潜热的分析 |
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| 引用本文： | 阎维平,刘郑芳,董静兰.增压富氧燃烧回收烟气水分潜热的分析[J].热力发电,2012,41(7):9-12. |
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| 作者姓名： | 阎维平 刘郑芳 董静兰 |
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| 作者单位： | 华北电力大学教育部电站设备状态监测与控制重点实验室,河北保定,071003 |
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| 基金项目： | 国家高技术研究发展863计划专项经费资助项目(2009AA05Z310) |
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| 摘 要： | 增压富氧燃烧发电机组具有在较高烟气温度下回收烟气水分潜热的独特优势.以某300 MW汽轮机组为研究对象,基于汽轮机变工况热力计算方法,计算分析了高压烟气中水分潜热加热凝结水对汽轮机热耗率与出力的影响,并与常压富氧燃烧进行了比较.结果表明,在增压富氧燃烧系统中采用排烟冷凝器,使汽轮机凝结水吸收烟气中水分的凝结放热和烟气的显热,随着烟气温度由190℃降至90℃,可使烟气水分含量由12.38％降至1.17％,回收了全部水分潜热的90.5％；与常压富氧燃烧相比,在机组额定功率下,汽轮机热耗率降低约5.8％；在汽轮机额定进汽量下,汽轮机功率增加约6.1％.
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| 关 键 词： | 300 MW机组 汽轮机 增压富氧燃烧 排烟余热 烟气水分 汽化潜热回收 热耗率 |
ANALYSIS OF RECYCLING LATENT HEAT OF MOISTURE IN FLUE GAS DURING THE PRESSURIZED OXYFUEL COMBUSTION |
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| YAN Weiping
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LIU Zhengfang
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DONG Jinglan.ANALYSIS OF RECYCLING LATENT HEAT OF MOISTURE IN FLUE GAS DURING THE PRESSURIZED OXYFUEL COMBUSTION[J].Thermal Power Generation,2012,41(7):9-12. |
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| Authors: | YAN Weiping LIU Zhengfang DONG Jinglan |
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| Affiliation: | Key Laboratory of Condition Monitoring and Control for Power Plant Equipment,Ministry of Education,School of Energy, Power and Mechanical Engineering,North China Electric Power University,Baoding 071003,Hebei Province,PRC |
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| Abstract: | The Ggenerating unit with a pressurized oxyfuel combustion has the an unique advantage of recycling latent heat of moisture in flue gas under a relatively high flue gas temperature.Taking a 300 MW unit with steam turbine as the object for example,based on the variable condition thermal calculation method of steam turbine,the influence of heating condensed water by latent heat of moisture in flue gas on the heat rate and output of steam turbine was analyzed,and the results were compared with that of an atmospheric pressure unit.Results showed that,in the pressurized oxyfuel combustion system,by using an exhaust gas condenser,making condensed water to absorb the heat released by moisture condensation,as well asand the sensible heat of flue gas,could can reduce the moisture content from 12.38% to 1.17% when the flue gas temperature dropped from 190 ℃ to 90 ℃,and make 90.5% |
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| Keywords: | 300MW unit steam turbine pressurized oxyfuel combustion exhaust heat recovery latent heat vaporization heat rate |
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