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Enhancing the Separation Efficiency in Acetic Acid Manufacturing by Methanol Carbonylation
Chemical Engineering & Technology ( IF 2.1 ) Pub Date : 2021-07-27 , DOI: 10.1002/ceat.202100230
Alexandre C. Dimian 1 , Anton A. Kiss 2, 3
Affiliation  

Acetic acid is an essential chemical used in the production of many chemical products. Using methanol as bio-building block, the acetic acid produced may be incorporated in bio-based products. This study deals with enhancing the efficiency of separations in a process using a homogeneous catalyst, which is the most applied today industrially. Several configurations for downstream processing by distillation are investigated using effective combinations of fully thermally coupled columns, namely, dividing-wall columns, alone or combined with heat pumps. The results indicate that the three-column direct sequence may be effectively replaced by a two-column sequence. Overall, the total annual cost is reduced by 34 %. The cost of compressor may be paid back in 1.5 years by the saved energy. Low energy intensity is achieved by tight integration with the reaction section.

中文翻译:

提高甲醇羰基化制乙酸的分离效率

乙酸是用于生产许多化学产品的基本化学品。使用甲醇作为生物构建块,生产的乙酸可以加入生物基产品中。这项研究涉及在使用均相催化剂的过程中提高分离效率,这是当今工业上应用最多的。使用完全热耦合塔的有效组合,即分隔壁塔,单独或与热泵组合,研究了通过蒸馏进行下游处理的几种配置。结果表明,三列直接序列可以有效地被两列序列取代。总体而言,每年的总成本降低了 34%。节省的能源可在1.5年内收回压缩机成本。
更新日期:2021-09-20
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