直接接触式低温烟气余热回收塔设计参数优化研究  

Design optimization study on direct contact tower used for low temperature flue gas waste heat recovery

作　　者：潘晓伟 王绍民 李硕 周贤[2] 王长军[1] 刘峻 王瑞元 彭烁[2] PAN Xiaowei;WANG Shaomin;LI Shuo;ZHOU Xian;WANG Changjun;LIU Jun;WANG Ruiyuan;PENG Shuo(Huaneng Beijing Thermal Power Co.,Ltd.,Beijing 102209,China;State Key Laboratory of Coal-Based Clean Energy,Beijing 102209,China)

机构地区：[1]华能北京热电有限责任公司,北京100023 [2]中国华能集团清洁能源技术研究院有限公司,北京102209

出　　处：《热科学与技术》2022年第6期609-614,共6页Journal of Thermal Science and Technology

基　　金：中国华能集团有限公司总部科技资助项目(HNKJ18-H14).

摘　　要：烟气余热回收塔能通过塔内气-水换热过程、回收烟气显热和水蒸气汽化潜热降低机组排烟温度,并且回收大量冷凝水。基于燃机电厂拟开展燃机烟气余热利用工程,对填料式余热回收塔进行换热模型构建,并对填料式余热吸收塔主要参数进行了研究与优化。研究结果表明:随着填料塔塔径的增大,填料层压降随之减小,填料静持液量和总持液量均随之减小;随着冷却水流量的增大,填料层压降随之增大,填料层高度随之减小,填料静持液量和总持液量均随之增大;随着填料比表面积的增大,填料层压降随之增大。The packed waste heat recovery tower can recover the sensible heat of the flue gas and latent heat of vaporization through the gas-water heat exchange in the tower.Then the unit exhaust temperature is reduced,and a large amount of condensed water is recovered.Based on the gas turbine power plant waste heat utilization project,the heat exchange model for the packed waste heat recovery tower is constructed and the main parameters of the tower are studied.The results show that as the tower diameter of the packing tower increases,the packing lamination decreases,and the static holding capacity and the total holding capacity of the packing decrease.With the increase of cooling water flow,the packing lamination increases,the height of the packing layer decreases,and the static liquid holding capacity and the total liquid holding capacity increase.As the specific surface area of the filler increases,the lamination of the filler increases.

关 键 词：填料塔 余热回收 节水 换热模型 

分 类 号：TK470[动力工程及工程热物理—动力机械及工程]