Zero-carbon fuel substitution and CO2 capture will play a crucial role in the decarbonization of cement plants. This paperproposes an integration scheme that combines the calcium looping process with the chemical looping hydrogen generation process (CaL-CLHG). The CaL-CLHG scheme offers the advantage of recovering waste heat from the cement production process for hydrogengeneration. Besides, the CaL-CLHG scheme avoids the power consumption associated with air separation in the traditional calciumlooping process (CaL-Oxy). Results indicate that the specific primary energy consumption for CO2 avoided can be achieved at 2.68 GJ/tin the CaL-CLHG scheme. This represents a reduction of 33.5% compared to the CaL-Oxy scheme. Economic analysis indicates that thecost of CO2 avoided can be reduced from 56.6 $/t in the CaL-Oxy scheme to the range of 34.2-41.6 $/t in the CaL-CLHG scheme. Inconclusion,adopting the CaL-CLHG process for the decarbonization of existing cement plants presents a techno-economically feasibleoption.
System assessment of integrating calcium looping and chemical loopinghydrogen generation processes for cement plants decarbonization
2024 No. 12
173
67
Authors:
- HE Song
- WANG Dan
- ZHENG Yawen
- GAO Lifan
- WANG Junyao
- YANG Zhi
- ZENG Xuelan
Unit:
- Collaborative Innovation Institute of Carbon Neutrality and Green Development,Guangdong University of Technology
- State Power Investment Group Hydrogen Energy Technology Development Co.,Ltd.
- School of Material and Energy,Guangdong University of Technology
- China Shenzhen Gas Corporation Ltd.
Abstract:
Keywords:
- calcium looping
- chemical looping hydrogen production
- cement decarbonization
- CO2 capture
Citation format:
何松(1994—),男,江西丰城人,博士。Email:hesong@gdut.edu.cn
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Citation format:
HE Song, WANG Dan, ZHENG Yawen, et al. System assessment of integrating calcium looping and chemical looping hydrogen generation processes for cement plants decarbonization[J].Clean Coal Technology,2024,30(12):180−191.
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