低温余热发电在己内酰胺项目中的应用  

Application of low-temperature waste heat power generation in caprolactam project

作　　者：徐浩 XU Hao(SINOPEC Hunan Petrochemical Co.,Ltd.,Yueyang 414000)

机构地区：[1]中石化湖南石油化工有限公司,湖南岳阳414000

出　　处：《合成纤维工业》2024年第4期96-99,共4页China Synthetic Fiber Industry

摘　　要：基于当前己内酰胺装置蒸汽消耗大,蒸汽凝液余热未完全利用的现状,以600 kt/a己内酰胺装置为例,介绍了低温余热发电在己内酰胺装置中的应用及节能效果。结果表明:600 kt/a己内酰胺装置蒸汽消耗量约1020 t/h,蒸汽凝液回收总量约870 t/h,在保证装置冷冻水对蒸汽凝液需求的同时,充分利用蒸汽凝液作为热源,采用有机朗肯循环(ORC)低温余热发电系统,以1,1,1,3,3-五氟丙烷作为有机工质进行低温余热发电,发电系统运行稳定、安全,每年净发电量达1.784×10^(7)kW·h,相当于减少标煤消耗5607 t,减少CO_(2)减排量10601 t,同时可节约循环水量1.440×10^(7)t,节能和经济效果显著。Based on the current situation of high steam consumption and incomplete utilization of waste heat from steam condensate in caprolactam units,taking a 600 kt/a caprolactam unit as an example,the application and energy-saving effect of low-temperature waste heat power generation were introduced in caprolactam units.The results showed that the steam consumption of the 600 kt/a caprolactam unit was about 1020 t/h and the total amount of steam condensate recovery was about 870 t/h,so an organic Rankine cycle(ORC)low-temperature waste heat power generation system was adopted using 1,1,1,3,3-pentafluoropropane as the organic working medium in order to fully utilize the steam condensate as heat source while ensuring the demand for steam condensate from the unit′s chilled water;and the power generation system operated stably and safely and provided significant energy-saving and economic effects,which produced an annual net power generation of 1.784×10^(7)kW·h,equivalent to reducing the consumption of standard coal by 5607 t and CO_(2)emissions by 10601 t and saving circulating water by 1.440×10^(7)t.

关 键 词：低温余热发电 有机朗肯循环 己内酰胺 蒸汽 节能 

分 类 号：TQ340.42[化学工程—化纤工业]