热力发电2024，Vol.53Issue(12)：102-111,10.DOI:10.19666/j.rlfd.202405101
煤电饱和烟气余热集中供暖系统特性分析
Characteristics analysis for centralized heating system using saturated flue gas waste heat in coal-fired power plants
摘要
Abstract
Direct discharging of saturated flue gas from coal-fired utility boiler can lead to significant low-grade waste heat loss.The saturated flue gas waste heat recovery and utilization for centralized heating system is constructed,the operating parameters of the heating system in coal-fired power plant are analyzed,and the feasibility that the saturated flue gas waste heat can be used to heat the return water of the heating system is verified.Finally,the economic efficiency of the centralized heating system is investigated for operation with different targets,and the influence characteristics of the operating parameters are revealed for the thermal performance of the centralized heating system.The research results show that,the temperature of flue gas waste heat can be increased by 30～40℃by absorption heat pump.With the 350 MW coal-fired heating unit as an example,the absorption heat pump recovers the saturated flue gas waste heat with 50.23 MW for re-utilization.The economic benefits brought by enhancing the heating capacity are significantly better than those corresponding to the increase in power generation,and the heating capacity of the coal-fired power plant is increased by 13.4%,and the annual heating revenue is increased by 19 752 000～34 423 200 yuan.The research provides technical references for the saturated flue gas waste heat recovery and utilization in coal-fired power plants.关键词
湿饱和烟气/余热回收/吸收式热泵/供暖抽汽/集中供暖/热力分析Key words
wet saturated flue gas/waste heat recovery/absorption heat pump/heating vapor extraction/centralized heating/thermodynamic analysis引用本文复制引用
陈鸥,滕达,路光杰,刘向辉,毕冬雪,韵潇..煤电饱和烟气余热集中供暖系统特性分析[J].热力发电,2024,53(12):102-111,10.基金项目
国家重点研发计划项目(2022YFC3701503) （2022YFC3701503）
龙源环保科技项目(LYHB-23-02) （LYHB-23-02）
科环集团科技项目(KH-2023-15)National Key Research and Development Program of China(2022YFC3701503) （KH-2023-15）
Technology Program of Longyuan Environmental(LYHB-23-02) （LYHB-23-02）
Technology Program of Technology&Environment Limited(KH-2023-15) （KH-2023-15）
