A multi-dimensional feasibility analysis of coal to methanol assisted by green hydrogen from a life cycle viewpoint

Zhao, Yingjie; Liu, Qian; Duan, Yuanyuan; Zhang, Yu-ke; Huang, Yi; Shi, Lijuan; Wang, Jiancheng; Yi, Qun

doi:10.1016/j.enconman.2022.115992

Cited by 25 publications

(3 citation statements)

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“…Because the GHCtPGA process is proposed to convert carbon effectively and reduce CO 2 emissions of the CtPGA process, the carbon utilization efficiency (φ C ) is analyzed and compared in this study. It is defined as the ratio of effective output and input carbon content as written in eq where F MG denotes the molar flowrate of MG and F coal and F CH 3 OH denote the molar flowrate of carbon in coal and methanol, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…Shi et al 11 proposed a novel green hydrogenassisted coal-to-ethylene glycol process and found that the novel process increases the exergy efficiency by 7.6% and reduces CO 2 emission intensity by 63.95%. Zhao et al 12 designed a green hydrogen-assisted coal-to-methanol process, which can improve the carbon, hydrogen, and exergy efficiencies by 28.91, 19.65, and 4.03%, respectively. Wang et al 13,14 also demonstrated that the coal gasification process coupled with green H 2 can significantly improve the overall performance of the traditional process.…”

Section: ■ Introductionmentioning

confidence: 99%

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Conceptual Design and Techno-Economic Analysis of a Novel Coal-to-Polyglycolic Acid Process Considering Wind–Solar Energy Complementary Features for Green H₂ Production and CO₂ Reduction

Chu

Yang

Zhao

et al. 2023

ACS Sustainable Chem. Eng.

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The production of degradable polyglycolic acid from coal is a promising route for converting coal to high-end chemicals and can availably alleviate the problem of excess ethylene glycol. However, the traditional coal-to-polyglycolic acid (CtPGA) process wastes a lot of precious CO gases to adjust the H 2 /CO ratio, simultaneously producing a large amount of CO 2 emissions. To address this issue, this work proposes a novel coal-to-polyglycolic acid process integrated with green hydrogen from complementary wind and solar power (GHCtPGA). The complementary characteristics of solar and wind energy are investigated to generate green hydrogen. It is found that the hybrid power of wind−solar energy for the green hydrogen production process can significantly affect the capacity of the energy and hydrogen storage systems. After the modeling and simulation of the whole flowsheet of the CtPGA and GHCtPGA processes, the techno-economic and environmental performance of these processes is analyzed in detail. Compared with the CtPGA process, the GHCtPGA process reduces CO 2 emissions by 68.85% and improves carbon and exergy efficiencies by 11.57 and 2.72%, respectively. Furthermore, the economic performance of the GHCtPGA process is more satisfactory because its total capital investment is reduced by 11.32%, the total production cost is saved by 3.59%, and the internal rate of return is improved by 2.83%. Finally, a sensitivity analysis is conducted to explore the effect of coal price, electricity price, power consumption, and carbon tax on the economic advantages of the proposed GHCtPGA process. It indicates that the proposed GHCtPGA process has considerably stronger market risk resistance than the CtPGA process. Therefore, the proposed process provides a valuable PGA production route with low carbon, high efficiencies, and optimal economic trade-offs.

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Section: Methodsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Conceptual Design and Techno-Economic Analysis of a Novel Coal-to-Polyglycolic Acid Process Considering Wind–Solar Energy Complementary Features for Green H₂ Production and CO₂ Reduction

Chu

Yang

Zhao

et al. 2023

ACS Sustainable Chem. Eng.

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“…They also stated that by implementing a CO 2 tax, the cost of synthesized methanol would potentially compete with the conventional one. Zhao et al [27] evaluated a coal-to-methanol process where H 2 was produced from three different pathways of water electrolysis driven by wind, solar or wind-solar hybrid energy. They also compared the hybrid system with the traditional coal-to-methanol process based on techno-economic and life cycle assessments.…”

Section: Introductionmentioning

confidence: 99%

Economic Assessment and Optimization of Low-Carbon Biomass-Based Power, Methane and Methanol Production

Eisavi¹,

Nami

Ranjbar³

2023

Preprint

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Green Hydrogen and Its Supply Chain. A Critical Assessment of the Environmental Impacts

Sola,

Rosa,

Ferrari

2024

Advanced Sustainable Systems

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Green hydrogen produced via electrolysis powered by renewables can greatly contribute to achieving carbon neutrality. The analysis of 35 papers reporting the life cycle assessment (LCA) of green hydrogen supply chains confirms the lower greenhouse gas (GHG) emissions with respect to other hydrogen forms and conventional fossil fuel and carbon systems. However, the global warming potential of green hydrogen worsens if grid electricity is used to back up renewable sources. Green hydrogen is also responsible for water consumption and for land use, while offshore platforms may be responsible for the loss of marine biodiversity. Another potential environmental hotspot is the depletion of rare metals and critical materials employed in the electrolyzer and in the power generation plants. This issue is exacerbated by the lack of information about the management of the end‐of‐life stage of this equipment. Notably, the delivery along the supply chain is responsible for hydrogen leaks, whose environmental consequences are still uncertain.

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A multi-dimensional feasibility analysis of coal to methanol assisted by green hydrogen from a life cycle viewpoint

Cited by 25 publications

References 50 publications

Conceptual Design and Techno-Economic Analysis of a Novel Coal-to-Polyglycolic Acid Process Considering Wind–Solar Energy Complementary Features for Green H₂ Production and CO₂ Reduction

Conceptual Design and Techno-Economic Analysis of a Novel Coal-to-Polyglycolic Acid Process Considering Wind–Solar Energy Complementary Features for Green H₂ Production and CO₂ Reduction

Economic Assessment and Optimization of Low-Carbon Biomass-Based Power, Methane and Methanol Production

Green Hydrogen and Its Supply Chain. A Critical Assessment of the Environmental Impacts

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A multi-dimensional feasibility analysis of coal to methanol assisted by green hydrogen from a life cycle viewpoint

Cited by 25 publications

References 50 publications

Conceptual Design and Techno-Economic Analysis of a Novel Coal-to-Polyglycolic Acid Process Considering Wind–Solar Energy Complementary Features for Green H2 Production and CO2 Reduction

Conceptual Design and Techno-Economic Analysis of a Novel Coal-to-Polyglycolic Acid Process Considering Wind–Solar Energy Complementary Features for Green H2 Production and CO2 Reduction

Economic Assessment and Optimization of Low-Carbon Biomass-Based Power, Methane and Methanol Production

Green Hydrogen and Its Supply Chain. A Critical Assessment of the Environmental Impacts

Contact Info

Product

Resources

About

Conceptual Design and Techno-Economic Analysis of a Novel Coal-to-Polyglycolic Acid Process Considering Wind–Solar Energy Complementary Features for Green H₂ Production and CO₂ Reduction

Conceptual Design and Techno-Economic Analysis of a Novel Coal-to-Polyglycolic Acid Process Considering Wind–Solar Energy Complementary Features for Green H₂ Production and CO₂ Reduction