y - JOUR A2 - Zhou, Guobing AU - John, John P. PY - 2020 DA - 2020/02/15 TI -水泥生产过程的参数化研究SP - 4289043 VL - 2020 AB -水泥工业是工业部门中最密集的能源消耗之一。能源消耗占生产成本的40% - 60%。此外,水泥行业贡献了大约5%到8%的人造CO2排放。由于其复杂性,水泥窑中涉及的物理化学和热化学反应仍然没有很好地了解。这些反应对能源消耗、环境恶化和水泥生产成本有着决定性的影响。在窑炉系统中实现对关键工艺变量的直接测量存在技术上的困难。在实验测试难以进行的情况下,利用过程模拟进行过程的设计、开发、分析和优化。此外,有几个模型用于研究替代燃料的使用,水泥熟料燃烧过程,相化学和物理参数。尽管如此,他们中的大多数都没有解决流程、设备和整个系统中的实际低效问题。本文介绍了带行星冷却器的四级预热干燥回转窑系统的参数化研究结果。坦桑尼亚Mbeya水泥公司(MCC)的RKS是一个案例研究。该研究调查了RKS参数的变化对系统行为、过程操作、环境和能源消耗的影响。 Necessary data for the modelling of the RKS at the MCC plant were obtained either by daily operational measurements or laboratory analyses. The steady-state simulation model of the RKS was carried out through the Aspen Plus software. The simulation results were successfully validated using real operating data. Predictions from parametric studies suggest that monitoring and regulating exhaust gases could improve combustion efficiency, which, in turn, leads to conserving fuels and lowering production costs. Composition of exhaust gases also depends both on the type of fuel used and the amount of combustion air. The volume of exit flue gases depends on the amount of combustion air and infiltrating air in the RKS. The results obtained from the study suggest a potential of coal saving at a minimum of about
米
̇
煤炭
=
1263
公斤
·
h
−
1
以目前窑炉进料5.8万kg·h计算,年进料量约为76126吨-1.因此,具体节能约为1849.12 kJ·kgcl-1,具有较高的熟料产量。在这种情况下,过程建模为评估RKS的性能提供了有效、安全、经济的方法。SN - 2356-735X UR - https://doi.org/10.1155/2020/4289043 DO - 10.1155/2020/4289043 JF - Journal of Energy PB - Hindawi KW - ER -