化工原理课程研发设计水吸收氨.doc

吉林化工学院 化 工 原 理 课 程 设 计 题目 处理量为7600m3/h氨气吸收塔的工艺设计 教 学 院 专业班级 学生姓名 学生学号 指导教师 课程设计任务书 1、设计题目：处理量为　　m3/h氨气吸收塔的工艺设计； 试设计一座填料吸收塔，用于脱除混于空气中的氨气。混合气体的处理量为7600（m3/h），其中含空气为96％，氨气为4％（体积分数），要求塔顶排放气体中含氨低于0.01％（体积分数），采用清水进行吸收，吸收剂的用量为最小用量的1.5倍。（20C°氨在水中的溶解度系数为H＝0.725kmol/m3.kPa） 2、工艺操作条件： （1）操作平均压力 常压 （2）操作温度 t=20℃ （3）每年生产时间：7200h。 （4）选用填料类型及规格自选。 3、设计任务： 完成吸收的工艺设计与计算，有关附属设备的设计和选型，用2号图纸手绘吸收系统的工艺流程图和工艺条件图，编写设计说明书（用电子版）。 目录 摘要································································1 第1章 绪 论············································2 1.1 吸收技术的概况··············································2 （1）根据给定的分离任务，确定吸收方案；·····························2 1.2 吸收设备的发················································2 1.3 吸收在工业生产中的应用······································4 第2章 设计方案···········································6 2.1 吸收剂的选择················································6 2.2 吸收流程的选择··············································6 2.2.1 吸收工艺流程的选择·····································6 2.2.2 工艺流程简图···········································7 2.3 吸收塔设备及填料的选择·······································7 2.3.1 吸收塔设备的选择·······································7 2.3.2填料的选择··············································8 2.4操作参数的选择···············································8 2.4.1操作温度的选择··········································8 2.4.2操作压力的选择··········································9 2.4.3吸收因子的选择··········································9 第3章 吸收塔的工艺计算···································11 3.1 基础物性数据·················································11 3.1.1 液相物性数据···········································11 3.1.2 气相物性数据···········································11 3.2 物料衡算·····················································11 3.3.1塔径的计算··············································13 3.3.2泛点率校核·········································