天津大学仁爱学院化工系化工原理课程设计板式连续精馏塔设计任务书一、设计题目：分离苯—甲苯系统的板式精馏塔设计试设计一座分离苯—甲苯系统的板式连续精馏塔，要求原料液的年处理量为50000吨，原料液中苯的含量为35%，分离后苯的纯度达到98%，塔底馏出液中苯含量不得高于1%（以上均为质量百分数）二、操作条件1.塔顶压强：4kPa（表压）；2.进料热状态：饱和液体进料3.回流比：加热蒸气压强：101.3kPa（表压）；单板压降：≤0.7kPa三、塔板类型：浮阀塔板四、生产工作日每年300天，每天24小时运行。五、厂址厂址拟定于天津地区。六、设计内容1.设计方案的确定及流程说明2.塔的工艺条件及有关物性数据的计算3.精馏塔的物料衡算4.塔板数的确定5.塔体工艺尺寸的计算6.塔板主要工艺尺寸的设计计算7.塔板流体力学验算8.绘制塔板负荷性能图9.塔顶冷凝器的初算与选型10.设备主要连接管直径的确定天津大学仁爱学院化工系化工原理课程设计11.全塔工艺设计计算结果总表12.绘制生产工艺流程图及主体设备简图13.对本设计的评述及相关问题的分析讨论目录一、绪论········································································1二、设计方案的确定及工艺流程的说明····································22.1设计流程··································································22.2设计要求··································································32.3设计思路··································································32.4设计方案的确定·························································4三、全塔物料衡算·······························································53.2物料衡算··································································5四、塔板数的确定·······························································64.1理论板数的求取·························································64.2全塔效率实际板层数的求取··········································7五、精馏与提馏段物性数据及气液负荷的计算···························95.1进料板与塔顶、塔底平均摩尔质量的计算························95.2气相平均密度和气相负荷计算······································10天津大学仁爱学院化工系化工原理课程设计5.3液相平均密度和液相负荷计算······································105.4液相液体表面张力的计算············································115.5塔内各段操作条件和物性数据表···································11六、塔径及塔板结构工艺尺寸的计算······································146.1塔径的计算······························································146.2塔板主要工艺尺寸计算···············...
