System assessment of integrating calcium looping and chemical looping hydrogen generation processes for cement plants decarbonization
HE Song
WANG Dan
ZHENG Yawen
GAO Lifan
WANG Junyao
YANG Zhi
ZENG Xuelan
Abstract：Zero-carbon fuel substitution and CO2 capture will play a crucial role in the decarbonization of cement plants.This paper proposes 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 hydrogen generation.Besides,the CaL-CLHG scheme avoids the power consumption associated with air separation in the traditional calcium looping process(CaL-Oxy).Results indicate that the specific primary energy consumption for CO2 avoided can be achieved at 2.68 GJ/t in the CaL-CLHG scheme.This represents a reduction of 33.5％compared to the CaL-Oxy scheme.Economic analysis indicates that the cost 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.In conclusion,adopting the CaL-CLHG process for the decarbonization of existing cement plants presents a techno-economically feasible option.
Keywords：calcium loopingchemical looping hydrogen productioncement decarbonizationCO2 capture
Publication Date：2024-12-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：12( 180-191 )