羰基化制备乙酸工艺副产物-重组分残液回收的研究  

Recovery of residue liquid from the process for carbonylation of methanol to acetic acid

作　　者：荆延[1] 华超 校逸[1] 白芳 

机构地区：[1]北京科技大学化学与生物工程学院,北京100083 [2]中科院过程与工程研究所,北京100080

出　　处：《天然气化工—C1化学与化工》2011年第4期1-3,共3页Natural Gas Chemical Industry

摘　　要：通过刮膜蒸发器脱重和高精密精馏的方法对羰基化制备乙酸工艺副产物-重组分残液回收进行了实验。实验中首先采用刮膜蒸发器对甲醇羰基化制备乙酸后的废液进行初步刮膜蒸发,再进行精密精馏处理最终制得3种高纯度产品—乙酸,乙酰氧基乙酸和乙二醇二乙酸酯。采用气相色谱对分离的各组分进行定量分析。优化了操作参数,并验证了工艺可行性,为工业化放大提供可靠的基础数据。Recovery of the residue liquid from the process for carbonylation of methanol to acetic acid was studied experimentally.The residue liquid firstly was evaporated by the Pope wiped-film molecular still and evaporator,then separated by precise rectification to obtain three high pure products—acetic acid,acetoxyacetic acid and ethylene glycol diacetate.Gas chromatography method was used to determine the separated components quantitatively.The optimized operation parameters of the whole recovery process were obtained and the process feasibility was verified,which provided reliable foundation data for its commercialization.

关 键 词：羰基化 乙酸 残液回收 精馏 蒸发 

分 类 号：TQ225.1[化学工程—有机化工]