Exergy, economic and environmental analysis of an integrated pressure-swing reactive distillation process for the isobutyl acetate production via methyl acetate transesterification

This paper provides a multi-aspect comparison of selected methods of ethyl acetate production and shows the possibility of further reactive distillation process integration and sophisticated intensification including process stream regeneration. The production pathways were selected with respect to their practical applicability and sufficient experimental and feasibility studies already published. A total of four case studies were designed and compared: conventional process set-up (ethyl acetate is produced in a chemical reactor) is designed as a base case study; reactive distillation with a separation unit is derived from the conventional process set-up. The mechanical and chemical approach to reactive distillation process intensification and integration were assumed: reactive distillation column with a stripper and reactive distillation column with an auxiliary chemical reaction (ethylene oxide hydration). Process models were compiled in the Aspen Plus software. Complex process flowsheets of selected case studies including separation and regeneration were designed and optimized. Three different points of view were applied to evaluate the selected process benefits and drawbacks. Process energy, economy, and safety were assessed. As a result, a reactive distillation column with an auxiliary chemical reaction has been proven to be the most suitable pathway for ethyl acetate production assuming all three evaluated aspects.

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Reactive distillation for methyl acetate production

Computers & Chemical Engineering ◽

10.1016/s0098-1354(03)00156-x ◽

2003 ◽

Vol 27 (12) ◽

pp. 1855-1866 ◽

Cited By ~ 43

Author(s):

Robert S. Huss ◽

Fengrong Chen ◽

Michael F. Malone ◽

Michael F. Doherty

Keyword(s):

Methyl Acetate ◽

Reactive Distillation ◽

Acetate Production

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Non-square open-loop dynamic model of methyl acetate production process by using reactive distillation column

MATEC Web of Conferences ◽

10.1051/matecconf/201815401008 ◽

2018 ◽

Vol 154 ◽

pp. 01008 ◽

Cited By ~ 1

Author(s):

Ahmad Misfa Kurniawan ◽

Renanto Handogo ◽

Hao-Yeh Lee ◽

Juwari Purwo Sutikno

Keyword(s):

Production Process ◽

Dynamic Model ◽

Methyl Acetate ◽

Distillation Column ◽

Reactive Distillation ◽

Open Loop ◽

Feed Ratio ◽

Reflux Ratio ◽

Acetate Production ◽

Real Process

The development of mathematics model especially non-square open-loop dynamic model has grown rapidly since four decades. Because of the need of simplicity and accuracy, industrial world is demanding a dynamic mathematical model as simple as possible but it still can represent the whole real process. Therefore, to meet those needs, an open-loop dynamic model of methyl acetate production process by using reactive distillation column has been built. Feed ratio, reflux ratio and reboiler duty were chosen to be the manipulated variables to make a better performance rather than only reflux flowrate and reboiler duty. Methyl acetate fraction in distillate and water fraction in bottom were still be selected as controlled variables, so a non-square open-loop dynamic model was formed.

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