高级检索

    BECCS对水泥行业实现碳中和的潜在贡献

    Potential contributions of BECCS for carbon neutrality in cement industry

    • 摘要: 技术创新是推动水泥行业低碳转型的必然选择。生物质能碳捕集与封存(Bioenergy with Carbon Capture and Storages, BECCS)是促进水泥行业实现碳中和的重要技术措施。量化分析水泥行业应用BECCS的技术潜力与经济成本具有重要意义。基于中国生物质−排放源−封存汇匹配模型(C-BESMM)评估了水泥行业到2060年的BECCS可能应用潜力。结果表明:现有水泥厂实现净零排放,2060年生物质掺混量可达0.29亿t/a,CO2捕集与封存量可达5.35亿t/a,同时掺混生物质且配备碳捕集设施的水泥厂形成的负排放量约0.42亿t/a;生物质掺混在2040年之前是主要减排贡献来源,2040年之后减排主要依靠碳捕集实现,能效提升有一定贡献,在整个周期基本保持稳定;生物质掺混量较高的区域主要在广东、山东、云南、河南,CO2捕集量较高的区域主要在河北、河南、辽宁、广西;98%的单位CO2减排成本介于−100~800元/t,其中负成本约4%,主要分布于河北、山东;提高生物质掺混率、提高可能源化利用率、扩充可利用的生物质资源类型,有利于提高水泥行业的生物质利用量,从而更有利于水泥厂减少剩余排放,实现“净零”。

       

      Abstract: Technical innovation is indispensable for driving the low-carbon transition of the cement industry. Bioenergy with carbon capture and storage (BECCS) emerges as a critical technology to facilitate carbon neutrality. Quantifying the technical potential and economic costs of BECCS application in the cement industry is of significant importance. Based on the china biomass-emission-sink matching model (C-BESMM), the potential application of BECCS in the cement industry by 2060 was assessed. The results show that to achieve net-zero emissions in existing cement facilities, the biomass consumption could reach 29 million tons/year and the volume of CO2 storage could reach 535 million tons/year by 2060, with cement plants integrating biomass blending and carbon capture generating approximately 42 million tons/year of negative emissions. Biomass consumption plays a crucial role in emission reduction before 2040, while carbon capture becomes the primary driver after 2040, with energy efficiency improvements contributing steadily throughout the period. Regions with high biomass consumption include Guangdong, Shandong, Yunnan, and Henan. Hebei, Henan, Liaoning, and Guangxi lead in CO2 capture. 98% of the unit emission reduction costs are between −100−800 yuan/ton of CO2. Among them, about 4% can achieve negative costs. Provinces with relatively large amounts of negative-cost emission reductions include Hebei, Shandong. Improving the biomass blending ratio, enhancing the biomass utilization rate as energy, and expanding the types of available biomass are conducive to increasing the biomass utilization volume in the cement industry, which is more beneficial for cement plants in reducing residual emissions and achieving “net zero”.

       

    /

    返回文章
    返回