毕业论文日产5500吨水泥熟料新型干法生产线回转窑工艺设计.doc

摘 要 水泥是社会经济发展最重要的建筑材料之一，在今后几十年甚至是上百年之内仍然是无可替代的基础材料，对人类生活文明的重要性不言而喻。 现代最先进的水泥生产技术就是新型干法预分解窑。预分解窑是在悬浮预热器与回转窑之间增设分解炉，在分解炉中加入占总用量50%-60%的燃料，使燃料燃烧的过程与生料碳酸盐分解的吸热过程在悬浮状态或沸腾状态下迅速进行，从而使入窑生料的分解率从悬浮预热窑的30%-40%提高到85%-90%，使窑的热负荷大为减轻，窑的寿命延长，而窑的产量却可成倍增长。与悬浮预热器窑相比，在单机产量相同的条件下，预分解窑具有:窑的体积小，占地面积减小，制造、运输和安装较易，基建投资较低，且由于一半以上的燃料是在温度较低的分解炉内燃烧，，产生有害气体NOｘ较少，减少了对大气的污染。 本设计内容为日产5500吨水泥熟料新型干法生产线回转窑工艺设计，根据配方比例和原燃料的数据分析，计算三大平衡，并进行了烧成工艺设计，参照其它国内外的水泥厂进行了回转窑工艺设计，确定回转窑规格，最终符合生产实际要求。 关键字： 回转窑 三大平衡 工艺设计 Abstract Cement is one of the most important building materials of the social and economic development, within the coming decades or even a century, Cement is still no substitute for basic materials, the importance of human civilization is self-evident. Modern most advanced cement production technology is NSP kiln advance decomposition. Pre decomposition kiln is in suspension perheater between decomposing furnace with rotary kiln added, join in calciner in total amount 50% - 60% of fuel, to make the fuel burning process and raw in the absorption process decompose carbonate state of suspension or boiling condition, thus make rapid decomposition rate of kiln raw from suspension preheater kiln 30 to 40 percent of the increased to 85 percent to 90 percent, the heat load of kiln is reduced greatly.Compared with suspension preheater kiln individual output, in the same conditions, the decomposition furnace with: small size, covers an area of reduced, manufacturing, transportation and installation easier, low investment in infrastructure, and because more than half of fuel is in the lower temperature burning in precalciner,, produce harmful gases, and reduced the rate of less NOx atmospheric pollution The design of the content of Nissan 5500 tons dry process rotary kiln cement production line process design ,According to the original ,the fuel of data analysis ,I work out the calculation of the three balance and the calculation for the firing process. Refer to other state-of-the-art cement plant for r