一种用于生产72%片碱的新装置  

A kind of new devices for 72%(wt) flake caustic soda production

作　　者：李庆生[1] 贺小华[1] 尹侠[1] 

机构地区：[1]南京工业大学,江苏南京210009

出　　处：《氯碱工业》2004年第7期21-23,共3页Chlor-Alkali Industry

摘　　要：介绍了一种生产质量分数为72%片碱的新装置,采用旋转薄膜蒸发器将质量分数为30%的碱浓缩至50%的液碱,再采用外热式蒸发器将50%的碱浓缩生产至72%的片碱。在1m2旋转薄膜蒸发器装置上进行了烧碱浓缩试验,考察了流量、转速、黏度等对传热系数的影响。生产实践表明,一套50m2装置生产72%片碱能力为1万t a(折100%为7000t a)。A kind of new devices for 72%(wt) flake caustic soda production is introduced.Caustic soda is concentrated from 30%(wt) to 50%(wt) by rotary film-evaporator,and then from 50%(wt) to 72%(wt,flake) in the devices by external-heating evaporator.The experiment for caustic soda concentrating is carried out in the test device of 1 m^2 rotary film-evaporator,and the effect of flow,rotating speed,viscosity on coefficency of heat transfer is studied.The actual production application shows that the production capacity of a set of 50 m^2 device is 10 kt/a(equal to 7 kt/a of 100% caustic soda).

关 键 词：片碱生产 外热式蒸发器 旋转薄膜蒸发器 烧碱 流量 转速 黏度 传热系数 

分 类 号：TQ114.268[化学工程—无机化工]