篩孔板式塔設(shè)計(jì)

1、摘要篩板塔是化工生產(chǎn)中主要的氣液傳質(zhì)設(shè)備。為完成苯甲苯二元物系的精餾進(jìn)行了相關(guān)塔設(shè)備的設(shè)計(jì)，本次設(shè)計(jì)的任務(wù)為分離進(jìn)料量50000噸年，質(zhì)量分?jǐn)?shù)為40%的苯甲苯溶液，使塔頂產(chǎn)品苯的質(zhì)量分?jǐn)?shù)達(dá)到96%，塔底釜液質(zhì)量分?jǐn)?shù)為2%。我們對(duì)此塔進(jìn)行了工藝設(shè)計(jì)，按照梯級(jí)圖解法算求得理論板數(shù)為15，實(shí)際板數(shù)為27，加料位置在第13塊板。進(jìn)行了塔板結(jié)構(gòu)的設(shè)計(jì)，塔徑1.2m，精餾段板間距0.35m，提餾段板間距為0.4m對(duì)塔板進(jìn)行了校核，均在安全操作范圍內(nèi)

2、，確定了操作點(diǎn)，精餾段彈性操作為5.04，提餾段彈性操作為5.30，符合操作要求。最后進(jìn)行輔助設(shè)備及塔高計(jì)算。本次設(shè)計(jì)包括設(shè)備分析、選取、計(jì)算、核算、繪圖等，是較完整的精餾設(shè)計(jì)過程，其設(shè)計(jì)結(jié)果滿足設(shè)計(jì)任務(wù)要求，結(jié)構(gòu)合理，是一次較理想的設(shè)計(jì)。關(guān)鍵詞：篩板塔；苯甲苯；精餾；負(fù)荷性能圖；塔設(shè)備；結(jié)構(gòu)目錄目錄第一章概述................................................................

3、..........................................31.1苯的性質(zhì)..................................................................................................31.1.1物理性質(zhì)..............................................................

4、.........................31.1.2化學(xué)性質(zhì).......................................................................................41.13基本用途......................................................................................41.

5、2甲苯..........................................................................................................51.2.1物理性質(zhì).......................................................................................51.2.2化學(xué)性質(zhì)....

6、...................................................................................61.2.3基本用途.......................................................................................6第二章第二章確定設(shè)計(jì)方案確定設(shè)計(jì)方案.....................

7、.....................................................................7第三章工藝計(jì)算..................................................................................................93.1物料衡算.....................................

8、............................................................93.1.1原料液及塔頂、塔底產(chǎn)品的摩爾分率......................................93.1.2全塔物料衡算...............................................................................93.2確定回流比

9、.............................................................................................93.2.1q線方程......................................................................................103.2.2Rmin和R的確定...............

10、..........................................................123.3確定理論塔板數(shù)和實(shí)際塔板數(shù)...........................................................133.3.1精餾段操作線方程的確定........................................................133.3.2精餾段和

11、提餾段氣液流量的確定............................................133.3.3提餾段操作線方程的確定........................................................133.3.4塔板數(shù)的確定.............................................................................13

12、3.3.5實(shí)際塔板數(shù)...........................................................................14PN3.4塔的氣液負(fù)荷計(jì)算...............................................................................163.4.1操作壓力..............................

13、.......................................................163.4.2操作溫度.....................................................................................163.4.3平均摩爾質(zhì)量計(jì)算......................................................