炼厂低温热优化利用及其网络?分析评价  

Optimization and network exergy analysis for utilization of low-temperature heat in refinery

作　　者：宣根海[1] 张英[1] 厉勇[1] 邢兵[1] XUAN Gen-hai;ZHANG Ying;LI Yong;XING Bing(SINOPEC Fushun Research Institute of Petroleum and Petrochemicals,Fushun 113001,China)

机构地区：[1]中国石油化工股份有限公司抚顺石油化工研究院,辽宁抚顺113001

出　　处：《现代化工》2018年第8期193-197,共5页Modern Chemical Industry

基　　金：中国石油化工股份有限公司委托开发项目(113092)

摘　　要：从大系统的角度出发,为炼厂优化设计了全厂范围内的低温热系统,通过装置间的间接热联合,有效提高了低温热的利用率。通过详细设计和模拟计算低温热媒水网络的具体参数,有效回收利用92℃热媒458 t/h,回收热量达11.1 MW/h,该系统每月可为全厂节省低压蒸汽2 560 t。通过?效率分析评价对比,全厂低温热系统对热量的质量利用程度较高,?效率可达0.865。In the view of large scale system,a plant-wide low-temperature heat system is designed optimally for a refinery,which improves the utilization of low temperature heat through strengthening the heat integration among the units.Based on the detailed design and the simulation calculation of concrete parameters in the low-temperature hot medium water network,458 t/h of 92℃ hot medium water or 11 MW/h of low-temperature heat are recovered effectively.This system can help this refinery to save 2,560 t of low pressure steam per month. It is verified through analysis,evaluation and comparison on exergy that the plant-wide low-temperature heat system exhibits a higher efficiency in utilization of heat,with an exergy efficiency of 0. 865.

关 键 词：低温热 热媒水 [火用]效率 优化设计 

分 类 号：TE624[石油与天然气工程—油气加工工程]