【正文】 ............................ 9 第 三 章 工藝計(jì)算 .................................................................................................................. 10 物料組成及設(shè)計(jì)方案 ..................................................................................................... 10 精餾塔的物料衡算 ......................................................................................................... 10 原料液、塔頂及塔底產(chǎn)品的摩爾分率 ...................................................................... 10 原料液及塔頂、塔底產(chǎn)品的平均摩爾質(zhì)量 .............................................................. 10 物料衡算 ...................................................................................................................... 11 塔板數(shù)的確定 ................................................................................................................. 11 泡點(diǎn)進(jìn)料溫度 .............................................................................................................. 11 最小回流比及操作回流比 .......................................................................................... 12 精餾塔氣液相負(fù)荷 ...................................................................................................... 13 操作線方程 .................................................................................................................. 13 圖解法求理論板數(shù) ...................................................................................................... 13 實(shí)際板層數(shù) .................................................................................................................. 14 精餾塔的工藝條件及有關(guān)物性數(shù)據(jù)的計(jì)算 ................................................................. 15 操作壓力計(jì)算 .............................................................................................................. 15 操作溫度計(jì)算 .............................................................................................................. 15 平均摩爾質(zhì)量計(jì)算 ...................................................................................................... 15 平均密度計(jì)算 .............................................................................................................. 16 液體平均表面張力計(jì)算 .............................................................................................. 16 液體平均粘度計(jì)算 ...................................................................................................... 17 精餾塔的塔體工藝尺寸的計(jì)算 ..................................................................................... 17 塔徑的計(jì)算 .................................................................................................................. 17 精餾塔有效高度的計(jì)算 .............................................................................................. 19 III 塔板主要工藝尺寸的計(jì)算 ............................................................................................. 20 溢流裝置計(jì)算 .............................................................................................................. 20 塔板布置 ...................................................................................................................... 22 篩板的流體 力學(xué)驗(yàn)算 ..................................................................................................... 23 塔板壓降 ...................................................................................................................... 23 液面落差 ...................................................................................................................... 24 液沫夾帶 ...................................................................................................................... 24 漏液 .............................................................................................................................. 25 液泛 .............................................................................................................................. 25 塔板負(fù)荷性能圖 ............................................................................................................. 25 漏液線 .......................................................................................................................... 25 液沫夾帶線 .................................................................................................................. 26 液相負(fù)荷下限線 .......................................................................................................... 27 液相負(fù)荷上限線 .......................................................................................................... 27 液泛線 .......................................................................................................................... 27 第 四 章 塔及其它設(shè)備的選型 .......................................................................................... 31 塔管徑計(jì)算 ..................................................................................................................... 31 進(jìn)料管計(jì)算 .................................................................................................................. 31 塔頂出料管計(jì)算 .......................................................................................................... 31 塔底出口管徑計(jì)算 ...................................................................................................... 31 塔頂蒸汽出口管徑 ...................................................................................................... 31 塔高計(jì)算 ......................................................................................................................... 32 孔徑 .............................................................................................................................. 32 塔頂空間 ...................................................................................................................... 32 塔底空間 ...................................................................................................................... 32 裙座 ....................................................