篩孔板式塔設計

1、摘要篩板塔是化工生產(chǎn)中主要的氣液傳質(zhì)設備。為完成苯甲苯二元物系的精餾進行了相關塔設備的設計，本次設計的任務為分離進料量50000噸年，質(zhì)量分數(shù)為40%的苯甲苯溶液，使塔頂產(chǎn)品苯的質(zhì)量分數(shù)達到96%，塔底釜液質(zhì)量分數(shù)為2%。我們對此塔進行了工藝設計，按照梯級圖解法算求得理論板數(shù)為15，實際板數(shù)為27，加料位置在第13塊板。進行了塔板結構的設計，塔徑1.2m，精餾段板間距0.35m，提餾段板間距為0.4m對塔板進行了校核，均在安全操作范圍內(nèi)

2、，確定了操作點，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。最后進行輔助設備及塔高計算。本次設計包括設備分析、選取、計算、核算、繪圖等，是較完整的精餾設計過程，其設計結果滿足設計任務要求，結構合理，是一次較理想的設計。關鍵詞：篩板塔；苯甲苯；精餾；負荷性能圖；塔設備；結構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化學性質(zhì)....

6、...................................................................................61.2.3基本用途.......................................................................................6第二章第二章確定設計方案確定設計方案.....................

7、.....................................................................7第三章工藝計算..................................................................................................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實際塔板數(shù)...........................................................................14PN3.4塔的氣液負荷計算...............................................................................163.4.1操作壓力..............................

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