New processes for recovery of acetic acid from waste water

New processes for recovery of acetic acid from waste water
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从废水中回收乙酸的新工艺

DOI:
10.1007/s10098-007-0101-z
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发表时间:
2008
影响因子:
4.3
通讯作者:
K. Sundmacher
K. Sundmacher
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
J. Gangadwala;G. Radulescu;A. K. F. Steyer;K. Sundmacher

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本文讨论了通过反应蒸馏从废水流中回收乙酸的工业重要问题。由于水相和有机相之间的液-液相分离,在塔段上存在三相状态是该方法的典型特征。提出了一种现代建模方法来检测该柱中潜在的相分裂的存在。一个很好的协议相分裂模型与文献数据已被证明。本文对正丁醇酯化法从30wt%乙酸水溶液中回收乙酸进行了理论研究。研究了替代塔结构,并鉴定了两种理论上接近100%乙酸转化率的结构。对所提出的结构进行了动态仿真,以查看瞬态响应wrt。常见的过程干扰。
This paper addresses an industrially important problem of acetic acid recovery from a waste water stream via reactive distillation. The presence of a three-phase regime on the column stages due to a liquid–liquid phase split between aqueous and organic phases is a typical characteristic of this process. A modern modeling approach is presented to detect the existence of potential phase splitting in this column. A good agreement of a phase splitting model with the literature data has been shown. A theoretical study for the recovery of acetic acid from its 30 wt% aqueous solution by esterification withn-butanol is presented. Alternate column structures were investigated and two structures rendering theoretically close to 100% conversion of acetic acid were identified. The dynamic simulations were performed on proposed structures to see transient responses wrt. to common process disturbances.
DOI: --
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期刊:
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