摘要
为烟气消白的同时实现脱硫塔后烟气废热与凝结水的协同高效回收利用,采用填料喷淋换热和热泵技术,在某小区供热锅炉上进行了热态实验,获得了烟气与喷淋水在塔内的传热传质特性。在大型燃煤供热(冷)机组上进行了工程实验。结果表明:与直接接触式空塔喷雾换热器相比,喷淋填料换热器进出口压差降低55%,风机功耗降低50%,水泵功耗降低57%,废热回收能力提高30%,消白效果提高20%,烟气废热与凝结水协同回收效果好。
To achieve simultaneous recovery of flue gas waste heat and condensation water after the desulfurization tower during white smoke elimination process,hot-state experiments were conducted in a certain heating boiler using the spray packed heat exchanger and heat pump technology,following which,the heat and mass transfer characteristics in the tower were investigated.The system proposed was then applied to large coal-fired heating(cooling)units.Results show that compared with the direct contact heat exchanger of empty-tower spray type,the pressure drop between inlet and outlet of the spray packed heat exchanger could be reduced by 55%,with a reduction in power consumption of fan by 50%,a reduction in power consumption of pump by 57%,an improvement on the ability of flue gas waste heat recovery by 30%and an improvement on the effect of white-smoke elimination by 20%,showing good effectiveness in the recovery of flue gas waste heat and condensation water.
作者
汪霞
吴凯
朱晓磊
孟继安
WANG Xia;WU Kai;ZHU Xiaolei;MENG Ji'an(Xinchang Power Generation Branch,Jiangxi Electric Power Co.,Ltd.,State Power Investment Corporation,Nanchang 330000,China;Shanghai Power Equipment Research Institute Co.,Ltd.,Shanghai 200240,China;School of Aerospace Engineering,Tsinghua University,Beijing 100084,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2020年第1期76-81,共6页
Journal of Chinese Society of Power Engineering
基金
上海发电设备成套设计研究院青年基金“烟气低温氧化脱硝方案”资助项目(201705068Q).
关键词
填料
烟气
流动
废热利用
凝结水回收
packing
flue gas
flow
waste heat utilization
condensation water recovery
