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Simulation and Optimization of the Phosgenation Reactive Distillation Process for Producing Toluene Diisocynate
  • Rong Bi,
  • Xiaoyang Sun
Rong Bi
Qingdao University of Science and Technology

Corresponding Author:[email protected]

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Xiaoyang Sun
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Toluene diisocyanate (TDI) is an important chemical intermediate prepared by phosgenation reaction between toluene diamine and phosgene with two steps name cold and thermal phosgenation respectively. In this paper, the reactive distillation model for the thermal phosgenation reaction based the kinetics equations was established for an industrial installation, and the effects of the different parameters on the process performance were studied firstly; then based on the analysis results, a thermal coupling process between the towers of reactive distillation and phosgene purification was presented and investigated; finally, the optimal operation scheme was simulated and the results showed that the proposed process can save the heat and cold energy with 7.29% and 32.78%, respectively, and reduce the total annual cost about 17.11%. The result of the paper can be used to guide the operation configuration or the revampment of the TDI production equipment.
30 Sep 2021Submitted to AIChE Journal
07 Oct 2021Submission Checks Completed
07 Oct 2021Assigned to Editor
24 Oct 2021Reviewer(s) Assigned
09 Nov 2021Editorial Decision: Revise Major
20 Dec 20211st Revision Received
26 Dec 2021Assigned to Editor
26 Dec 2021Submission Checks Completed
27 Dec 2021Reviewer(s) Assigned
16 Jan 2022Editorial Decision: Revise Major
28 Jan 20222nd Revision Received
30 Jan 2022Submission Checks Completed
30 Jan 2022Assigned to Editor
31 Jan 2022Reviewer(s) Assigned
10 Feb 2022Editorial Decision: Accept