目录中文摘要...............................................................1英文摘要...............................................................21引言................................................................31.1氨的基本用途.....................................................31.2合成氨技术的发展趋势.............................................41.3合成氨常见工艺方法...............................................41.3.1高压法........................................................51.3.2中压法........................................................51.3.3低压法........................................................51.4设计条件.........................................................51.5物料流程示意图...................................................62物料衡算............................................................82.1合成塔入口气组成.................................................82.2合成塔出口气组成.................................................82.3合成率计算.......................................................92.4氨分离器出口气液组成计算........................................102.5冷交换器分离出的液体组成........................................132.6液氨贮槽驰放气和液相组成的计算..................................132.7液氨贮槽物料衡算................................................152.8合成循环回路总物料衡算..........................................173能量衡算...........................................................283.1合成塔能量衡算..................................................283.2废热锅炉能量衡算.................................................303.3热交换器能量衡算................................................313.4软水预热器能量衡算..............................................323.5水冷却器和氨分离器能量衡算......................................333.6循环压缩机能量衡算..............................................353.7冷交换器与氨冷器能量衡算........................................363.8合成全系统能量平衡汇总..........................................384设备选型及管道计算..................................................404.1管道计算........................................................404.2设备选型........................................................42结论..................................................................43致谢..................................................................44参考文献..............................................................45年产五万吨合成氨合成工段工艺设计摘要：本次课程设计任务为年产五万吨合成氨工厂合成工段的工艺设计，氨合成工艺流程一般包括分离和再循环、氨的合成、惰性气体排放等基本步骤，上述基本步骤组合成为氨合成循环反应的工艺流程。其中氨合成工段是合成氨工艺的中心环节。新鲜原料气的摩尔分数组成如下：H273.25%，N225.59%，CH41.65%,Ar0.51%合成操作压力为31MPa，合成塔入口气的组成为NH3(3.0%),CH4+Ar(15.5%),要求合成塔出口气中氨的摩尔分数达到17%。通过查阅相关文献和资料，设计了年产五万吨合成氨厂合成工段的工艺流程，并借助CAD技术绘制了该工艺的管道及仪表流程图和设备布置图。最后对该工艺流程进行了物料衡算、能量衡算，并根据设计任务及操作温度、压力按相关标准对工艺管道的尺寸和材质进行了选择。关键词：物料衡算，氨合成，能量衡算TheDesignof50kt/aSyntheticAmmoniaProcessAbstract:TherearemanytypesofAmmoniasynthesistechnologyandprocess,Generally,theyincludesammoniasynthesis,separationandrecycling,inertgasesEmissionsandotherbasi...
