Introduction
Bimonthly, started in 1957
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
Administrator
Shanxi Provincial Education Department
Sponsor
Taiyuan University of Technology
Publisher
Ed. Office of Journal of TYUT
Editor-in-Chief
SUN Hongbin
ISSN: 1007-9432
CN: 14-1220/N
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Process Simulation and Techno-economic Analysis of Dimethyl Oxalate Synthesis from LDG
DOI:
10.16355/j.cnki.issn1007-9432tyut.2020.04.009
Received:
Accepted:
| Corresponding author | Institute | |
| DONG Jinxiang | College of Chemistry and Chemical Engineering, Taiyuan University of Technology |
abstract:
Converter gas(LDG) is a by-product gas produced by steel mills with 60% CO, it is usually directly emitted or used as fuel for captive power plant. In this paper a process for the synthesis of dimethyl oxalate(DMO) from LDG was proposed, which mainly includes hydrodesulfurization unit, catalytic deoxidation unit, low temperature methanol washing unit and DMO synthesis unit. At the same time, by using Aspen Plus V10 chemical simulation software, the process simulation, mass and energy analyses, and technical economic analysis were performed. The results show that the sales price of DMO produced by this process was 5 309.74 RMB/ton, lower than the current market price(10 000 RMB/ton), and the internal rate of return was 35.56%, higher than the basic discount rate(12%). Breakeven analysis shows that when the production load exceeded 24.94%, the project startd to make profit. The process designed in this paper has great economic benefits, providing suggestions and options for the utilization of converter gas and energy saving and emission reduction in iron and steel enterprises.
Keywords:
converter gas; dimethyl oxalate; process design; techno-economic analysis; resource utilization;