基于多级碳捕集和废渣回收设计的新型煤基电石-乙炔系统工艺：多目标优化评价视角,Industrial & Engineering Chemistry Research

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基于多级碳捕集和废渣回收设计的新型煤基电石-乙炔系统工艺：多目标优化评价视角
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2022-12-27 , DOI: 10.1021/acs.iecr.2c03947
Hongxia Wang ₁ , Pengfei Zhu ₁ , Min Dai ₁ , Xiaomei Wu ₁ , Fusheng Yang ₁ , Zaoxiao Zhang ₁

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原料消耗大、能耗高、污染重一直是制约煤制电石行业稳定发展的关键因素。因此，本文提出了一种新型的煤基电石-乙炔生产（CCAP）工艺碳捕集与利用与固废回收联合系统，以改善这些不足。这套改进后的CCAP系统由气化炉、电石炉、乙炔炉、新设计的再碳化炉和煅烧炉耦合模块以及矿化单元组成。开发了 CCAP 系统的热力学模型以计算有效原子产率、碳消耗、CO ₂排放等来评估性能。改进后的系统表现更好，有效原子产率（98.50%）、CO ₂捕获率（69.57%）、CO ₂排放量（1.1064 t CO ₂ ·（t ^–1 C ₂ H ₂））、CO ₂ e排放量（7.2092 t CO ₂ e·(t ^–1 C ₂ H ₂ ))和碳消耗量(3.2101 t Coal·(t ^–1 C ₂ H ₂ ))比参考系统低64.57%, 0, 2.25 t CO ₂ ·( t ^–1 C ₂ H ₂ ), 20.4122 吨 CO ₂e·(t ^–1 C ₂ H ₂ ), 和 5.43 t 煤·(t ^–1 C ₂ H ₂ ), 分别。火用分析表明，改进后的系统在高效能源利用方面表现更好，大规模化学过程的火用效率为 48.97%。此外，通过多目标优化在最大有效原子产率、最小碳消耗、CO ₂当量排放和总年成本（TAC）之间进行权衡。通过三目标优化，改进后的系统可实现较低的TAC 8.51×10 ⁶ $/年，CO ₂ e排放量为4.1573 t CO ₂ e·(t ^–1C ₂ H ₂ )，碳消耗量为1.9874 t Coal·(t ^–1 C ₂ H ₂ )，分别比参照系统降低38.78%、79.63%和63.40%。改进后的CCAP系统经过多目标优化后的综合性能得到显着提升，使其在节能减排和资源回收方面更具竞争力。

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A Novel Coal-Based Calcium Carbide-Acetylene System Process Based on Multistage Carbon Capture and Waste Slag Recycling Design: A Multiobjective Optimization Evaluation Perspective

Large amounts of raw material consumption, high energy consumption, and severe pollution have always been the key factors restricting the stable development of the coal-to-calcium carbide industry. Therefore, this paper presents a novel combined carbon capture and utilization and solid waste recycling system of the coal-based calcium carbide-acetylene production (CCAP) process to improve these deficiencies. This improved CCAP system consists of a gasifier, carbide furnace, acetylene furnace, the newly designed coupling module of a recarbonization furnace and calciner, and mineralization units. The thermodynamic model of the CCAP system is developed to calculate the effective atomic yield, carbon consumption, CO₂ emission, etc. to evaluate the performance. The improved system performed better with the effective atomic yield (98.50%), CO₂ capture rate (69.57%), CO₂ emission (1.1064 t CO₂·(t^–1C₂H₂)), CO₂e emission (7.2092 t CO₂e·(t^–1C₂H₂)), and carbon consumption (3.2101 t Coal·(t^–1C₂H₂)) than the referenced system with 64.57%, 0, 2.25 t CO₂·(t^–1C₂H₂), 20.4122 t CO₂e·(t^–1C₂H₂), and 5.43 t Coal·(t^–1C₂H₂), respectively. The exergy analysis shows that the improved system performed better for efficient energy utilization with an exergy efficiency of 48.97% for a large-scale chemical process. Besides, the trade-off between the maximum effective atomic yield, minimum carbon consumption, CO₂ equivalent emission, and total annual cost (TAC) is conducted through multiobjective optimization. By three-objective optimization, the improved system could achieve a lower TAC of 8.51 × 10⁶ $/year, CO₂e emission of 4.1573 t CO₂e·(t^–1C₂H₂), and carbon consumption of 1.9874 t Coal·(t^–1C₂H₂) simultaneously, which decreased by 38.78%, 79.63%, and 63.40%, respectively, than that of the referenced system. The all-around performance of the improved CCAP system after multiobjective optimization has been dramatically improved, making it more competitive in energy conservation, emission reduction, and resource recovery.

更新日期：2022-12-27

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