氰化钠裂解炉软化水余热制冷技术的研究  

Study on Residual Heat Refrigeration Technology of Softened Water in Sodium Cyanide Cracking Furnace

作　　者：刘明贺 赵国海 周琦 LIU Ming-he;ZHAO Guo-hai;ZHOU Qi(Ynnovate Sanzheng（Yingkou）Fine Chemical Co.,Ltd.,Liaoning Yingkou 115003,China)

机构地区：[1]营创三征(营口)精细化工有限公司,辽宁营口115003

出　　处：《辽宁化工》2018年第8期802-803,共2页Liaoning Chemical Industry

摘　　要：叙述了溴化锂吸收式制冷机组利用氰化钠裂解炉循环软化水的热能,生产8℃左右冷水的工艺过程;探讨了采用余热回收制冷对整个公司的意义及经济价值。按照制冷工况下热力学综合效率最佳的原则,要求在保证氰化钠裂解炉稳定运行下,使循环软化水温度达到70℃左右。根据产生的冷水的量和温度,供公司其他工序冷量端使用,综合实际运行结果表明,该溴化锂系统完全以低品位废热作为驱动热源,其运行成本很低,一般投资在两年左右就可回收,是较理想的应用于裂解炉循环冷却水热能的制冷方式。The process principle of lithium bromide absorption refrigeration unit to prepare cold source by using natural process water as refrigerant and lithium bromide aqueous solution as absorbent was introduced. The significance and economic value of the lithium bromide absorption refrigeration unit were discussed. On the basis of the principle of optimal overall thermodynamic efficiency under refrigeration condition, it＇s required that the temperature of circulating softened water reaches about 70 ℃ under the condition of stable operation of sodium cyanide cracking furnace. According to the quantity and temperature of cold water produced, it can be used at the cold end of other processes of the company. The results of practical operation show that, due to the use of the low grade waste heat as the driving heat source and low operating cost, the investment can be recovered in about two years, and thus, this lithium bromide unit is an ideal refrigeration method for waste heat recovery in cracking furnace cycle.

关 键 词：溴化锂制冷技术 吸收式制冷 余热回收 裂解炉 

分 类 号：TQ025.3[化学工程]