摘要
为建立一套低温余热发电技术指标评价体系,实现对低温余热发电工程项目设计的合理性、科学性进行定量定性评价的目的。本文根据低温余热发电系统的结构,提出了余热发电效率、余热利用效率、换热器效率等性能评价指标,分析了各评价指标的影响因素。通过建立ORC有机朗肯循环低温余热发电技术工程模型,以延长油田某伴生气发电站产生的废弃烟气和缸套水作为热源进行了研究。研究结果表明,余热发电功率随着热源(烟气、缸套水)初始温度的上升逐步增加,且上升幅度大于热源温度的增加幅度。当模型边界条件为某一固定数值时,理论余热利用效率为10%,电站自用电率为12.5%,内部收益率8.9%,能够取得较好的经济效益和社会效益,具有一定的应用价值。
In order to realize the quantitative and qualitative evaluation of the rationality and scientificity of the design of low temperature waste heat power generation project,it is necessary to establish a set of technical index evaluation system of low temperature waste heat power generation.According to the structure of low temperature waste heat power generation system,the waste heat power generation efficiency,waste heat utilization efficiency and heat exchanger efficiency are taken as evaluation indexes,and the influencing factors of each evaluation index are analyzed.By establishing the engineering model of ORC organic Rankine cycle low temperature waste heat power generation technology,the waste flue gas and cylinder water produced by an associated gas power station in Yanchang oilfield are studied as heat sources.The results show that the power of waste heat power generation increases gradually with the increase of the initial temperature of heat sources(flue gas and cylinder water),and the increase range is greater than that of heat source temperature.When the boundary condition of the model is a fixed value,the theoretical waste heat utilization efficiency is 10%,the self utilization rate of the power station is 12.5%,and the internal rate of return is 8.9%,which can achieve better economic and social benefits,and has certain application value.
作者
杨阳
高炜
白平
陈康
刘利军
YANG Yang;GAO Wei;BAI Ping;CHEN Kang;LIU Lijun(Shaanxi Yanchang Petroleum Power Sales Co.,Ltd.,Xi’an 710000,China)
出处
《陕西煤炭》
2021年第S02期64-68,共5页
Shaanxi Coal
关键词
ORC有机朗肯循环
低温余热发电
换热器效率
ORC organic Rankine cycle
low-temperature waste heat generation
heat exchanger efficiency
