化工原理课程设计-苯-甲苯筛板精馏塔设计精选.doc

化工原理课程设计-苯-甲苯筛板精馏塔设计精选.doc

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化工原理课程设计-苯-甲苯筛板精馏塔设计精选

化工原理课程设计 设计题目: 苯-甲苯筛板精馏塔设计 学 生 姓 名: ? 班级: 学 号: 指导教师: 设计时间: 年月日 ~?月日 : 年 月 日 于徐州 ? 目 录 任务书·····························································1 摘 要·····························································2 ABSTRACT···························································2 第1章 绪论························································3 1.1 塔设备的分类···················································3 1.2 塔设备在化工生产中的作用和地位 ·······························3 1.3 设计条件····················································· 3 1.4 问题研究 ·····················································3 第2章 板式塔的设计 ··············································3 2.1 工业生产对塔板的要求 2.2 设计方案的确定 ················································4 2.2.2 操作压力的选择 ··············································4 2.2.3 进料热状况的选择 ············································4 2.2.4 加热方式的选择 ··············································4 2.2.5 回流比的选择 ················································4 第3章 工艺流程图 ··················································4 第4章 工艺计算及主体设备的计算···································· 5 4.1 精馏塔的物料衡算·············································· 5 4.1.1 原料液及塔顶、塔底产品的摩尔分率····························5 4.1.2 原料液及塔顶、塔底产品的平均摩尔质量······················5 4.1.3 物料衡算····················································5 4.2 塔板数的确定 ··················································5 4.2.1理论板层数NT的求取···········································5 4.2.2 实际板层数的求解 ···········································8 4.3 精馏塔的工艺条件及有关物性数据计算 ···························8 4.3.1 操作压力的计算··············································8 4.3.2 操作温度计算················································8 4.3.3 平衡摩尔质量的计算··········································9 4.3.4 平均密度的计算············································· 9 4.3.5 液体平均表面张力计算······································· 10 4.3.6 液体平均粘度计算··········································· 11 4.4 精馏塔的塔体工艺尺寸计算·······

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