Abstract
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.
Original language | English |
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Pages (from-to) | 1792-1802 |
Number of pages | 11 |
Journal | Chemical Engineering and Technology |
Volume | 44 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2021 |
Bibliographical note
Accepted Author ManuscriptKeywords
- Acetic acid manufacturing
- Chemical process design
- Energy efficiency
- Process simulation
- Sustainable chemical process