Journal
PROCESSES
Volume 7, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/pr7060377
Keywords
MMA; double-effect distillation; energy conservation; MAL; purity
Categories
Funding
- National Natural Science Foundation of China [21805014]
- scientific and technological research program of the Chongqing Municipal Education Commission [KJQN201801424]
- Young Scientist Growth Support Project of Yangtze Normal University [2018QNRC10]
- Research Project of Yangzte Normal University [2015XJXM02]
- Guangxi Natural Science Foundation [2016GXNSFBA380216]
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Methyl methacrylate (MMA) plays a vital role in national productions with broad application. Herein, the production of MMA is realized by the improved eco-friendly direct methylation method using Aspen Plus software. Three novel kinds of energy-saving measures were proposed in this study, including the recycle streams of an aqueous solution, methacrolein (MAL), and methanol, the deployment of double-effect distillation instead of a normal one, and the design of a promising heat-exchange network. Moreover, MMA with a purity of 99.9% is obtained via the design of a MAL absorber column with an optimal stage number of 11 and a facile chloroform recovery process by using the RadFrac model. Thus, the proposed green process with energy-conservation superiority is the vital clue for developing MMA, and provides a reference for the production of MMA-ramifications with excellent prospects.
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