皂化废碱液蒸发浓缩技术的改进  

Improvement on Evaporation and Concentration Technology of Saponification Waste Alkali Liquor

作　　者：张家森 姜雨土 

机构地区：[1]巨化集团公司锦纶厂,浙江衢州324004

出　　处：《化工生产与技术》2006年第3期59-61,共3页Chemical Production and Technology

摘　　要：分析了环己酮生产环己烷皂化废碱液焚烧排放烟气时有臭味及蒸发器列管严重结垢的原因和机理。对皂化废碱液蒸发浓缩技术进行了改进:将外加热式管内沸腾升膜蒸发器改造为外加热式管外沸腾强制循环蒸发器,并在皂化废碱液中添加蒸发助剂。实施后明显抑制了蒸发器列管结垢趋势,焚烧炉烟气臭气消除,运行周期达到1个月以上;清洗蒸发器时,只需用稀碱液和水循环清洗,避免了频繁打开蒸发器机械清洗。Smells caused from the burning of cyclohexane saponification waste alkali liquor in the cyclohexanone production and fouling of the evaporator are analyzed. Improvement is made on evaporation and concentration technology of saponification waste alkali liquor:exterior heating inner pipe boiling rising membrane evaporator is innovated into an exterior heating boiling forcefully recycling evaporator,and an evaporation assistant is added in the saponification waste alkali liquor. After the innovation, it can greatly restrain fouling of the evaporator pipes,eliminate smoke and bad smell,lengthen the operation life to over 1 month; Evaporators only need alkali liquor and water for recycling cleaning.

关 键 词：皂化废碱液 焚烧 蒸发 强制循环 

分 类 号：TQ234.2[化学工程—有机化工]