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Abstract The cement industry accounts for approximately 14.3% of the national carbon emissions, which has a significant impact on achieving the ‘double carbon’ target. Most of the existing studies on cement life cycle assessment only consider the environmental impact. In this paper, a comprehensive approach to evaluate the life cycle of cement is proposed, which takes into account the performance of the finished product and its environmental impact. First, the environmental impact assessment method of cement life cycle is designed and proposed, the boundary model and bill of materials for cement production are established, and the CML2001 method is used to calculate the environmental impact of cement life cycle. The results show that the main environmental impact is the global warming potential, and the impact of the clinker calcination stage on the environment is the greatest among all stages. Based on the results of the life cycle environmental assessment, a multi-objective optimization model of the performance and environmental impact of a unit cement product is constructed in the clinker calcination stage, which takes into account the deviation of the carbon dioxide decomposition and the three rate values, and uses the NSGA-II algorithm for simulation analysis. This model is intended to provide theoretical guidance for cement production and reduce the environmental load in the production process while maintaining good cement performance.
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Published: 31 July 2024
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2024, Vol. 0 
