【正文】 ...............................................................................................5 ...................................................................................................6 逐板計算： .....................................................................................................................................6 全塔效率的估算 .............................................................................................................................7 實際塔板數(shù) PN ..............................................................................................................................8 ...............................................................................................................8 .............................................................................................................................................8 六 .精餾塔主體尺寸的計算 ......................................................................................... 9 ...........................................................................................................9 ........................................................................................................................................9 ..................................................................................................................................... 12 選擇 ............................................................................................................................. 12 （出口堰）的設(shè)計 ............................................................................................................ 13 (1).堰長 Wl : ............................................................................................................. 13 lW =(～ )D=1600=1120mm ..................................................................... 13 (2).堰上液層高度 hOW ： ....................................................................................... 13 .......................................................................................................................................... 14 塔板尺寸 ...................................................................................................................................... 15 降液管底隙高度 h0..................................................................................................................... 15 板結(jié)構(gòu)的選擇 .............................................................................................................................. 16 板材料的選擇 .............................................................................................................................. 16 板基本結(jié)構(gòu)的選擇 ...................................................................................................................... 16 篩孔數(shù) n ....................................................................................................................................... 16 ............................................................................................. 17 氣體通過塔板的壓強(qiáng)降 : ph ,m液柱 .................................................................................. 17 課程設(shè)計 第 2 頁 共 23 頁 降液管內(nèi)液體高度 (液泛 or 淹塔 ).......................................................................................... 19 霧沫夾帶 ...................................................................................................................................... 20 漏液點氣速 uOW ........................................................................................................................... 20 八 .篩板塔的輔助設(shè)備 ..................................................................................