Department of Mechanical and Aerospace Engineering, University of Uyo, Uyo, Nigeria.
Energy, Exergy and Environment Research Group (EEERG), Department of Mechanical Engineering, University of Calabar, Calabar, Nigeria.
Environ Sci Pollut Res Int. 2023 Sep;30(42):96441-96461. doi: 10.1007/s11356-023-29212-2. Epub 2023 Aug 12.
The paper presents an advanced exergoenvironmental and thermo-sustainability analysis of a dry process, 5-million-ton capacity cement plant with real-time operational data. The analysis was based on component-wise modelling by separating the exergy destruction (ED) into endogenous, exogenous, avoidable and unavoidable parts for the two production lines, L1 and L2. The result shows an exergy efficiency ([Formula: see text]) of 55.58% for L1 and 58.22% for L2. Additionally, the overall exergoenvironmental factor (EEF) was calculated at 6.47% for (L1) and 5.89% for (L2), with the rotary kiln (RK) having the highest (EEF) of 53.7%. Conversely, the advanced exergy analysis showed that the plant's mainstream ED rates are endogenous and unavoidable. The component sustainability index (SI) for L1 and L2 ranged between [Formula: see text] and [Formula: see text], respectively. Similarly, the sustainability results show that the environmental destruction coefficient (EDC) and the environmental destruction index (EDI) were high in L1. Nonetheless, the study identified components with high potential for improvement, making system design and optimization suggestions possible.
本文利用实际运行数据，对具有实时运行数据的 500 万吨产能干法水泥厂进行了先进的火用环境和热可持续性分析。该分析基于部件建模，将两个生产线（L1 和 L2）的火用损耗（ED）分为内在损耗、外在损耗、可避免损耗和不可避免损耗。结果表明，L1 的火用效率（[Formula: see text]）为 55.58%，L2 的火用效率为 58.22%。此外，（L1）的整体火用环境因子（EEF）为 6.47%，（L2）的整体火用环境因子（EEF）为 5.89%，其中回转窑（RK）的火用环境因子（EEF）最高，为 53.7%。相反，先进的火用分析表明，工厂主流的 ED 率是内在的和不可避免的。L1 和 L2 的部件可持续性指数（SI）分别在[Formula: see text]到[Formula: see text]之间。同样，可持续性结果表明，L1 的环境破坏系数（EDC）和环境破坏指数（EDI）较高。尽管如此，该研究确定了具有高改进潜力的组件，从而为系统设计和优化建议提供了可能。
