【正文】 ................................................ 6 選擇塔型 ................................................................................................................... 6 精餾方式 ................................................................................................................... 7 操作壓力 ................................................................................................................... 7 加熱方式 ................................................................................................................... 7 工藝流程 ................................................................................................................... 7 第二章 篩板式精餾塔的工藝設(shè)計(jì) ..................................................................................................... 9 精餾塔的工藝計(jì)算 ............................................................................................................... 9 苯和甲苯的汽液平 衡組成 ........................................................................................... 9 .................................................................................................... 10 回流比及理論塔板的確定 ................................................................................................... 11 ............................................................................................... 13 ................................................................................................................. 13 精餾段物性數(shù)據(jù)計(jì)算 ......................................................................................................... 14 ................................................................................................................ 17 ............................................................................................................ 17 ................................................................................................................ 17 . 精餾段液體表面張力 ............................................................................................ 18 . 液體平均粘度 ....................................................................................................... 18 . 氣液體積流率的計(jì)算 ............................................................................................ 19 提留段物性數(shù)據(jù)計(jì)算 ......................................................................................................... 19 ................................................................................................................ 20 ............................................................................................................ 20 ................................................................................................................ 20 段液體表面張力 .............................................................................................. 21 ......................................................................................................... 22 . 氣液體積流率的計(jì)算 ............................................................................................ 22 第三章 塔和塔板主要工藝尺寸計(jì)算 .............................................................................................. 23 塔板橫截面的布置計(jì)算 ...................................................................................................... 23 .................................................................................................................... 23 課程設(shè)計(jì)內(nèi)頁(yè)說明書 3 塔板負(fù)荷性能圖 ................................................................................................................. 28 過量液沫夾帶線 ....................................................................................................... 28 ............................................................................................................. 29 ............................................................................................................. 30 （氣相負(fù)荷下限線） ..................................................................................... 31 ............................................................................................................. 31 .................................................................................................................... 32 ............................................................................................................................... 32 ........................................................................................................ 38 ............................................................................................................. 39 ............................................................................................................. 40 （氣相負(fù)荷下限線） ..................................................................................... 40 ............................................................................................................. 41 .................................................................................................................... 41 第四章 精餾塔的附屬設(shè)備及選型 .................................................................................................. 42 ． 輔助設(shè)備 ....................................................................................................................... 42 ． 輔助設(shè)備的選型 ............................................................................................................ 43 塔頂冷凝器的選型 .................................................................................................... 43 塔底冷卻器的選擇 .................................................................................................... 44 再沸器的選型 ........................................................................................................... 46 管路計(jì)算 .............