【正文】 ............................................................12 .............................................................................................................12 （ 1）氣相平均密度 由理想氣體狀態(tài)方程計算，即 ..........................................12 （ 2）液相平均密度 ...........................................................................................12 ............................................................................................13 6．液體平均粘度計算 .........................................................................................13 五、精餾塔的塔體工藝尺寸計算 .....................................................................14 1．塔徑的計算 ......................................................................................................14 （ 1）最大空塔氣速和空塔氣速 .........................................................................14 （ 2）塔徑 .........................................................................................................15 2．精餾塔總有效高度的計算 .............................................................................15 六、 塔板主要工藝尺寸的計算 .......................................................................15 ........................................................................................15 （ 1) 溢流堰長 wl ： ..........................................................................................15 4 （ 2) 溢流堰高度 Wh .........................................................................................15 （ 3) 弓形降液管的寬度 dW 與降液管的面積 fA ： ............................................16 (4) 降液管底隙高度 oh .....................................................................................16 ............................................................................17 七、 塔板流體力學(xué)驗算 .....................................................................................18 .....................................................................................................18 （ 1） 干板阻力的計算 ......................................................................................18 （ 2） 板上充液層阻力 1h ..................................................................................19 （ 3） 克服表面張力所造成的阻力 0h ................................................................19 .....................................................................................................................19 （ 1） 與氣體通過塔板的壓降相當(dāng)?shù)囊褐?mhp ? ....................................19 （ 2） 液體通過降液管的壓頭損失 : ...................................................................19 （ 3） 板上液層高度 : ........................................................................................20 .............................................................................................................20 (1)霧沫夾帶 .....................................................................................................20 八、 塔板負荷性能圖 ..........................................................................................21 .........................................................................................................21 .................................................................................................................22 3. 液相負荷上限線 ..............................................................................................23 .................................................................................................................23 5. 液相負荷下限線 ..............................................................................................24 九、 塔板負荷性能圖 ..........................................................................................24 十、 塔附件及總高度的計算 ............................................................................24 DH ......................................................................................................24 FH ..................................................................................................25 wH ......................................................................................................25 1H .......................................................................................................25 2H .......................................................................................................25 .........................................................................................................25 5 .............................................................................................................25 十一、 熱平衡確定熱換器 .................................................................................25 Qc(以 1秒鐘計算 ) .......................................................................25 A.........................................................................................26 ............................................................................................26 QB (以 1 秒鐘來算 ) ......................................................................26 A.........................................................................................27 ........................................................................................27 .........................................................................................................27 （ 1） 求原料預(yù)熱所需的熱量 (以 1 秒鐘來算 ) ....................................................27 （ 2）塔底產(chǎn)品能給的熱量及其換熱面積 ...........................................................27 （ 3）柴油預(yù)熱器 (以 1 秒鐘來算 ) ......................................................................28 （ 4）塔釜產(chǎn)品冷卻器 (以 1 秒鐘來算 ) ...............................................................28 十二、 設(shè)備費用計算 ..........................................................................................28 .............................................................................................................28 ..................................................................