分離苯一甲苯篩板式精餾塔設(shè)計(jì)
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- 分離苯-甲苯篩板式精餾塔設(shè)計(jì)目錄
第一部分 概述
一、設(shè)計(jì)題目...........................................................................................3
二、設(shè)計(jì)任務(wù)...........................................................................................3
三、設(shè)計(jì)條件...........................................................................................3
四、工藝流程圖………………………………………………………...3
第二部分 工藝設(shè)計(jì)計(jì)算
一、設(shè)計(jì)方案的確定..............................................................................4
二、精餾塔的物料衡算..........................................................................4
1.原料液及塔頂、塔底產(chǎn)品的摩爾分?jǐn)?shù)........................................................4
2.原料液及塔頂、塔底產(chǎn)品的平均摩爾質(zhì)量................................................4
3.物料衡算原料處理量....................................................................................4
三、塔板數(shù)的確定.................................................................................4
1.理論板層數(shù)的求取.................................................................................4
2.實(shí)際板層數(shù)的求取.......................................................................................6
四、精餾塔的工藝條件及有關(guān)物性數(shù)據(jù)的計(jì)算.................................6
1.操作壓力計(jì)算................................................................................................6
2.操作溫度計(jì)算................................................................................................6
3.平均摩爾質(zhì)量計(jì)算........................................................................................6
⑴塔頂摩爾質(zhì)量計(jì)算.........................................6
⑵進(jìn)料板平均摩爾質(zhì)量計(jì)算...................................6
⑶提餾段平均摩爾質(zhì)量.......................................7
4.平均密度計(jì)算...............................................................................................7
⑴氣相平均密度計(jì)算.........................................7
⑵液相平均密度計(jì)算.........................................7
5.液相平均表面張力計(jì)算...............................................................................7
⑴塔頂液相平均表面張力計(jì)算.................................7
⑵進(jìn)料板液相平均表面張力計(jì)算...............................7
6.液相平均粘度計(jì)算.......................................................................................8
⑴塔頂液相平均粘度計(jì)算.....................................8
⑵進(jìn)料板液相平均粘度計(jì)算...................................8
五、精餾塔的塔體工藝尺寸計(jì)算.........................................................8
1.塔徑的計(jì)算...................................................................................................8
2.精餾塔有效高度計(jì)算...................................................................................9
六、塔板主要工藝尺寸的計(jì)算...........................................................9
1.溢流裝置計(jì)算..............................................................................................9
⑴堰長..................................................9
⑵溢流堰高度...........................................9
⑶弓形降液管寬度和截面積..........................9
2.塔板布置....................................................................................................9
⑴塔板的分塊.............................................9
⑵邊緣區(qū)寬度確定.........................................9
⑶ 開孔區(qū)面積計(jì)算........................................9
⑷篩孔計(jì)算及其排列.......................................10
七、篩板的流體力學(xué)驗(yàn)算..................................................................11
1.塔板壓降....................................................................................................11
⑴干板阻力計(jì)算........................................11
⑵氣體通過液層的阻力計(jì)算..............................11
⑶液體表面張力的阻力計(jì)算..............................11
2.液面落差...................................................................................................12
3.液沫夾帶...................................................................................................12
4.漏液...........................................................................................................12
5.液泛...........................................................................................................12
八、塔板負(fù)荷性能圖.........................................................................13
1.漏液線.......................................................................................................13
2.液沫夾帶線...............................................................................................13
3.液相負(fù)荷下限線.......................................................................................14
4.液相負(fù)荷上限線.......................................................................................14
5.液泛線.......................................................................................................14
九、設(shè)計(jì)一覽表.................................................................16
十、參考文獻(xiàn)……………………………………………17...
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