Comparative techno-economic analysis of oil-based and coal-based ethylene glycol processes

Yang, Qingchun; Zhu, Shuangdong; Huang, Weiqing; Yu, Peijing; Zhang, Dawei; Wang, Zhongbing

doi:10.1016/j.enconman.2019.111814

Cited by 53 publications

(16 citation statements)

References 36 publications

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“…The transportation energy consumption and proportion are shown in Table . The production of 1 ton of EG consumes 3.17 tons of coal (heat value: 16.82 MJ/kg), 47.3 GJ of fuel coal, and 3.16 GJ of electricity . The process flowsheet of the CtEG process is shown in Figure .…”

Section: Life Cycle Modelmentioning

confidence: 99%

“…31 The production of 1 ton of EG consumes 3.17 tons of coal (heat value: 16.82 MJ/kg), 47.3 GJ of fuel coal, and 3.16 GJ of electricity. 8 The process flowsheet of the CtEG process is shown in Figure 3. The main process of a typical oxalate method CtEG process is described as follows.…”

Section: ■ Life Cycle Modelmentioning

confidence: 99%

“…He et al 7 analyzed the techno-economic performance of the direct catalytic hydration to ethylene glycol process by simulations, showing that the catalytic method can effectively reduce the investment cost and energy consumption. Yang et al 8 conducted an economic and environmental comparative analysis on CtEG and OtEG technologies. Yang et al 9 conducted an exergy analysis and optimized the design of the BtEG route.…”

Section: ■ Introductionmentioning

confidence: 99%

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Comparative Life Cycle Assessment of Energy Consumption, Pollutant Emission, and Cost Analysis of Coal/Oil/Biomass to Ethylene Glycol

Yang

et al. 2021

ACS Sustainable Chem. Eng.

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The industrialized coal-to-ethylene glycol (CtEG) route has become a potential competitor for the conventional oil-to-ethylene glycol (OtEG) route, and the emerging biomass-to-ethylene glycol (BtEG) route is also recognized because of its good environmental performance. In this study, life cycle assessment (LCA) is used to compare and analyze the life cycle energy consumption, pollutant emissions, and life cycle costs (LCC) of CtEG, OtEG, and BtEG routes. According to the results, the ethylene glycol production process is the main contributor to energy consumption and pollutant emissions. Compared with the OtEG route, the BtEG route has lower environmental costs but high direct production costs. The CtEG route provides a viable alternative for coal-rich and oil-deficient countries. However, as a promising production route for ethylene glycol, the CtEG route has the disadvantages of high energy consumption and high pollutant emissions, resulting in large environmental costs and not in line with the concept of sustainable development. Therefore, how to reduce energy consumption and pollutant emissions in the production process, especially carbon emissions, is an urgent problem to be solved. This research provides an important basis for improving the production of ethylene glycol and helps decision makers choose the most suitable production route for ethylene glycol based on actual conditions.

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Section: Life Cycle Modelmentioning

confidence: 99%

Section: ■ Life Cycle Modelmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

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Comparative Life Cycle Assessment of Energy Consumption, Pollutant Emission, and Cost Analysis of Coal/Oil/Biomass to Ethylene Glycol

Yang

et al. 2021

ACS Sustainable Chem. Eng.

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“…As Figure shows, the CtEG process is mainly composed of eight units: an air separation unit (ASU), CG, WGS, acid gas removal (AGR), hydrogen and carbon monoxide separation (HCS), dimethyl oxalate synthesis (DMOS), EGS, and an ethylene glycol refining (EGR) unit, respectively . However, a large amount of valuable CO is converted to CO 2 in the WGS unit to increase the H 2 /CO ratio of syngas, which causes large amounts of CO 2 emissions and a lower carbon utilization efficiency of the CtEG process.…”

Section: System Description and Modelingmentioning

confidence: 99%

“…The total global production capacity of ethylene glycol is expected to reach a level above 60 million tons by 2025. According to the different raw material routes, the ethylene glycol production routes are mainly divided into oil-based and coal-based routes . Although the former technology is mature, it has disadvantages such as high cost, high water consumption, and high energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Process Development and Technoeconomic Analysis of Different Integration Methods of Coal-to-Ethylene Glycol Process and Solid Oxide Electrolysis Cells

Yang

Chu

Zhang

et al. 2021

Ind. Eng. Chem. Res.

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The conventional coal-to-ethylene glycol (CtEG) process is criticized for its high CO 2 emissions. Because most CtEG projects are located in areas rich in renewable energy such as wind energy and solar energy, two novel green hydrogen-assisted CtEG processes are proposed and analyzed by the integration of solid oxide electrolysis cell (SOEC) technology: the CtEG process integrated with the SOEC technology of only steam electrolysis (SOEC-CtEG) and that of steam and carbon dioxide electrolysis (CoSOEC-CtEG). The effects of the operating temperature, current density, and inlet gas composition on the electrochemical performance of the solid oxide steam electrolytic and coelectrolytic processes are investigated and compared based on their electrochemical and flowsheet-based models. The thermodynamic and technoeconomic advantages of the two proposed processes are manifested by comparison with a conventional process. The results show that the two proposed processes are promising because they increase the carbon utilization efficiency by 26.13 and 22.48%, increase the exergy efficiency by 14.82 and 17.34%, decrease the total capital investment by 23.60 and 19.38%, decrease the levelized production cost by 20.55 and 27.47%, and increase the internal rate of return by 8.85 and 9.18%. In addition, the sensitivity analysis results show that the two proposed processes have stronger antirisk ability than the conventional process.

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Simulation of ethanol recovery and economic analysis of pectin production on an industrial scale

Freitas

Júnior

Martins

et al. 2021

Bioprocess Biosyst Eng

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Comparative techno-economic analysis of oil-based and coal-based ethylene glycol processes

Cited by 53 publications

References 36 publications

Comparative Life Cycle Assessment of Energy Consumption, Pollutant Emission, and Cost Analysis of Coal/Oil/Biomass to Ethylene Glycol

Comparative Life Cycle Assessment of Energy Consumption, Pollutant Emission, and Cost Analysis of Coal/Oil/Biomass to Ethylene Glycol

Process Development and Technoeconomic Analysis of Different Integration Methods of Coal-to-Ethylene Glycol Process and Solid Oxide Electrolysis Cells

Simulation of ethanol recovery and economic analysis of pectin production on an industrial scale

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