| 羰基化合成醋酸过程废液的回收工艺研究 |
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| 引用本文： | 白芳,华超,迪建东. 羰基化合成醋酸过程废液的回收工艺研究[J]. 天然气化工, 2012, 37(6): 26-28,36 |
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| 作者姓名： | 白芳 华超 迪建东 |
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| 作者单位： | 中国科学院过程工程研究所,北京,100190 |
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| 基金项目： | 松花江重污染行业清洁关键技术及工程示范 |
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| 摘 要： | 针对羰基化生产醋酸过程中产生的重组分残液难以回收的现状,首次提出了采用刮膜蒸发器富集醋酸废液中的醋酸、乙二醇二乙酸酯(EGDA)和乙酰氧基乙酸(AAA)馏分,其后减压间歇精馏分离富集馏分,实现羰基化醋酸废液的回收利用。试验表明该方法是切实可行的,并获得了纯度为99%以上的醋酸产品和95%以上的EGDA和AAA副产品。研究了精馏操作对EGDA和AAA纯度的影响,获得了最佳实验条件。
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| 关 键 词： | 醋酸 废液 刮膜蒸发器 间歇精馏 |
Study on a process for recovering residual liquid from production of acetic acid by carbonylation of methanol |
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| BAI Fang , HUA Chao , DI Jian-dong. Study on a process for recovering residual liquid from production of acetic acid by carbonylation of methanol[J]. Natural Gas Chemical Industry, 2012, 37(6): 26-28,36 |
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| Authors: | BAI Fang HUA Chao DI Jian-dong |
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| Affiliation: | (Institute of Process Engineering,Chinese Academy Of Sciences,Beijing 100190,China) |
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| Abstract: | To solve the existing difficulties in recovering and utilizing the heavy residual liquid from the production of acetic acid by carbonylation of methanol,a new process was proposed,in which first using a wiped-film evaporator to obtain the concentrated acetic acid,ethylene glycol diacetate(EGDA) and acetoxyacetic acid(AAA) distillates from the residual liquid,then the distillates were further purified by a vacuum batch distillation process to obtain the pured products.The experimental results showed that the proposed process was feasible,and the purification of the recovered products was over 99% for acetic acid and over 95% for EDGA and AAA.The effects of operation conditions were investigated,and the optimum experimental operation conditions were determined. |
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| Keywords: | acetic acid production residual liquid recovery wiped-film evaporator batch distillation |
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