乙醇预热器的设计.doc

辽宁科技学院
课程设计
课程名称:
化工原理
课程设计题目:
乙醇液预热器的设计
系部:
生物医药与化学工程学院
专业:
应用化学
学生姓名:
杨亚雄
班级:
应化BG101
学号:
6414110123
指导教师姓名:
田景利
职称:
设计完成时间:
2012年1月10日
化工原理课程设计任务书
设计题目:
乙醇液预热器的设计
设计条件:
某有机合成厂的乙醇车间在节能改造中,为回收系统内第一萃取塔釜液的热量,用其釜液将原料液从95℃预热至128℃,原料液及釜液均为乙醇,水溶液,其操作条件列表如下:
设计条件数据
物料
流量 kg/h
组成(含乙醇量)mol%
温度℃
操作压力 MPa
进口
出口
釜液
109779

145


原料液
102680
7
95
128

处理能力:6000m3/h(标准状况);
设备型式:列管换热器;
允许压强降:管程压强降小于10kPa;壳程总压强降小于60kPa。
设计计算内容:
传热面积、换热管根数;
确定管束的排列方式、程数、挡板、隔板的规格和数量;
壳体的内径;
冷、热流体进、出口管径;
核算总传热系数
管壳程流体阻力校核。
设计成果:
设计说明书一份;
换热器工艺条件图。
设计时间:
兩周。
参考文献
姚玉英等《化工原理》天津大学出版社
柴城敬等《化工原理课程设计指导》天津大学出版社
设计人:学号:
设计进程
指导教师布置设计题目
设计方案确定
工艺计算
设备计算
绘图
编写实践说明书
答辩
应用化学教研室
2011年12月20日
目录
任务书说明··································································4
概述···································································5
二、确定设计方案····························································6
参数的计算·····························································6
换热器型号的选取·························································9
3、传热排列方法及壳体内径··················································· 11
折流挡板··································································12
接管·····································································12
三、总传热系数的核算·······················································13
管程核算··································································13
壳程核算·································································13
3、管壳程压力降核算··························································14
4、总传热系数核算对··························································16
四、设计结果一览表···························································18
设计者心得体会···························································19
六、主要参考文献····························································20
七、主要符号说明····················································