Optimization of a Reactive Distillation Process for the Synthesis of Dialkyl Carbonate Considering Side Reactions

Jongchan Hur, Jinwoo Park, Robert Stephen Landon, Il Moon

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Dimethyl carbonate (DMC) is an environment-friendly chemical, widely used as a solvent, reagent, and fuel additive. It is produced commercially via transesterification, an equilibrium reaction in which ethylene carbonate (EC) and methanol (MeOH) react to produce DMC and a useful coproduct, monoethylene glycol (MEG). However, side reactions occur, such as the reaction of EC with MEG to produce diethylene glycol and CO2. These reactions must be considered to simulate the DMC process accurately. Reported theoretical results without considering the side reactions differed by 1.7% from industrial results. Here, side reactions were considered to improve the simulation accuracy; a relative error of only 0.1% was obtained. The optimal EC:MeOH feed ratio was changed (from 8.1 to 8.5) to increase the profit to 0.2 USD per kmol of EC. Thus, herein we show how to increase the profit by process modification, which will be useful for studies involving commercial plant simulation.

Original languageEnglish
Pages (from-to)17898-17905
Number of pages8
JournalIndustrial and Engineering Chemistry Research
Volume58
Issue number38
DOIs
Publication statusPublished - 2019 Sep 25

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Carbonates
Distillation
Ethylene Glycol
Ethylene
Glycols
Profitability
Fuel additives
Transesterification
Methanol
ethylene carbonate
methyl carbonate

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Cite this

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title = "Optimization of a Reactive Distillation Process for the Synthesis of Dialkyl Carbonate Considering Side Reactions",
abstract = "Dimethyl carbonate (DMC) is an environment-friendly chemical, widely used as a solvent, reagent, and fuel additive. It is produced commercially via transesterification, an equilibrium reaction in which ethylene carbonate (EC) and methanol (MeOH) react to produce DMC and a useful coproduct, monoethylene glycol (MEG). However, side reactions occur, such as the reaction of EC with MEG to produce diethylene glycol and CO2. These reactions must be considered to simulate the DMC process accurately. Reported theoretical results without considering the side reactions differed by 1.7{\%} from industrial results. Here, side reactions were considered to improve the simulation accuracy; a relative error of only 0.1{\%} was obtained. The optimal EC:MeOH feed ratio was changed (from 8.1 to 8.5) to increase the profit to 0.2 USD per kmol of EC. Thus, herein we show how to increase the profit by process modification, which will be useful for studies involving commercial plant simulation.",
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Optimization of a Reactive Distillation Process for the Synthesis of Dialkyl Carbonate Considering Side Reactions. / Hur, Jongchan; Park, Jinwoo; Landon, Robert Stephen; Moon, Il.

In: Industrial and Engineering Chemistry Research, Vol. 58, No. 38, 25.09.2019, p. 17898-17905.

Research output: Contribution to journalArticle

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