太阳能辅助垃圾焚烧发电系统及其性能研究  

Performance Analysis of a Solar-aided Waste-to-Energy Power Generation System

作　　者：吴芸芸 王义函 陈衡[1] 郝勇[2] WU Yunyun;WANG Yihan;CHEN Heng;HAO Yong(Beijing Key Laboratory of Emission Surveillance and Control for Thermal Power Generation,North China Electric Power University,Beijing 102206,China;Laboratory of Distributed Energy System and Renewable Energy,Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]华北电力大学热电生产过程污染物监测与控制北京市重点实验室,北京102206 [2]中国科学院工程热物理研究所分布式供能与可再生能源实验室,北京100190

出　　处：《动力工程学报》2023年第7期858-868,共11页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金创新研究群体资助项目(51821004);国家自然科学基金资助项目(51806062);中央高校基本科研业务费资助项目(2020MS006)。

摘　　要：为了促进太阳能热能技术和生活垃圾能源转化技术的发展,提出了一种太阳能辅助的垃圾焚烧发电系统。该系统由槽式集热器收集的太阳能提供外热源,利用该热源对垃圾焚烧电站的蒸汽进行再热,以提高蒸汽参数。以某垃圾处理量550 t/d、净发电功率8.97 MW的垃圾焚烧电站作为案例机组,耦合5.91 MW太阳能辅助再热系统,并进行热力学分析和敏感性分析,评价了系统在不同太阳辐射条件下的性能表现,揭示了其性能提升机理。结果表明:新系统在设计点工况下,理论循环效率相比于案例机组提高了0.96个百分点,净发电功率增加了1.36 MW,光电效率可达22.91%;太阳能辅助垃圾焚烧发电系统在全年大部分时间表现良好,其年均光电效率可达17.45%,度电成本为0.757元/(kW·h),具备经济可行性。A solar-aided municipal solid waste incineration power generation system has been proposed for advancing the waste-to-energy and solar thermal energy technologies.This system could use the heat obtained by the parabolic trough collectors to reheat the working steam in the incineration plant and improve the steam parameters.A waste-to-energy power plant with the waste treatment capacity of 550 t/d and net generating power of 8.97 MW was used as a reference unit,coupled with solar assisted reheat system with input of 5.91 MW solar energy.Thermodynamic and sensitive analyses were conducted to examine the performance of the proposed system under various solar conditions and reveal the performance enhancement mechanism.Results show that compared with the reference system,the proposed system improves the ideal steam cycle efficiency by 0.96% and net generating power by 1.36 MW with solar-to-electricity efficiency of 22.91% under the design condition.The proposed system performs well for most of the year.And the annual solar-to-electricity efficiency of 17.45% is achieved.The levelized cost of electricity of the proposed system is 0.757 Yuan/(kW h),which is economically feasible.

关 键 词：垃圾焚烧 太阳能辅助发电 再热循环 热力学分析 系统集成 

分 类 号：TK514[动力工程及工程热物理—热能工程]