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 50 000 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： 4 kPa （表压）；2. 进料热状态： 饱和液体进料3. 回流比： 加热蒸气压强： 101.3 kPa（表压）；单板压降： ≤ 0. 7 kPa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··························································...
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