【正文】 ion, pyrolysis gasoline, coking benzene as raw materials in. The design of the main equipment of pure benzene tower is calculated in detail. On the other, and the auxiliary equipment selection, and draw the layout and facade, pure benzene tower equipment, process flow diagram, figure, finally calculated simple economy. The design of the products are benzene, toluene, xylene, non aromatic hydrocarbons, the main products are benzene, toluene and xylene. Key words benzene hydrogenation distillation III 目 錄 摘要 .............................................................................................................................. I Abstract ....................................................................................................................... II 第 1 章 緒論 ............................................................................................................ 1 設(shè)計(jì)的目的和意義 .................................................................................... 1 畢業(yè)設(shè)計(jì)的目的和 意義 ................................................................ 1 本設(shè)計(jì)的目的和意義 .................................................................... 1 產(chǎn)品的組成和成分及物性參數(shù) ................................................................ 1 產(chǎn)品的質(zhì)量指標(biāo) 價(jià)格 供需關(guān)系 ............................................................ 3 設(shè)計(jì)地點(diǎn)，氣候參數(shù) ................................................................................ 5 第 2 章 工藝論證 ...................................................................................................... 6 國(guó)內(nèi)外工藝流線論證 ................................................................................ 6 粗苯加氫精制原理 ........................................................................ 6 粗苯加氫精制工 藝 ........................................................................ 6 粗苯加氫精制工藝特點(diǎn) .............................................................. 10 主要設(shè)備論證 類(lèi)型的確定 .................................................................... 12 填料萃取塔 .................................................................................. 12 篩 板萃取塔 .................................................................................. 12 脈沖篩板萃取塔 .......................................................................... 13 往復(fù)篩板萃取塔 .......................................................................... 13 轉(zhuǎn)盤(pán)萃取塔及偏心轉(zhuǎn)盤(pán)萃取塔 ................................................. 14 萃取劑選擇的依據(jù) .................................................................................. 14 結(jié)論 ........................................................................................................... 15 第 3 章 工藝詳述 .................................................................................................... 16 本設(shè)計(jì)選擇的工藝 .................................................................................. 16 工藝原理 ....................................................................................... 16 工藝流程 ....................................................................................... 16 工藝參數(shù)列表 ........................................................................................... 17 第 4 章 工藝計(jì)算 .................................................................................................... 19 IV 總物料衡算 ............................................................................................... 19 純苯塔的設(shè)計(jì)計(jì)算 .................................................................................. 20 計(jì)算數(shù)據(jù) ....................................................................................... 20 塔的物料衡算 .............................................................................. 23 氣液負(fù)荷計(jì)算 .............................................................................. 28 精餾塔塔體尺寸計(jì)算 .................................................................. 33 塔的工藝結(jié)構(gòu)尺寸的設(shè)計(jì)與計(jì)算 ............................................. 34 塔板布置及浮閥數(shù)目與排列 ...................................................... 36 塔板流動(dòng)性能校核 ...................................................................... 38 塔板負(fù)荷性能圖 .......................................................................... 43 純苯塔熱量衡算 ........................................................................ 48 塔的機(jī)械設(shè)計(jì) ............................................................................ 51 設(shè)備一覽表 ............................................................................................... 53 第 5 章 設(shè)備布置 .................................................................................................... 57 設(shè)備布置原則 ........................................................................................... 57 滿足生產(chǎn)工藝要求 ...................................................................... 57 符合經(jīng)濟(jì)原則 .............................................................................. 57 符合安全生產(chǎn)要求 ...................................................................... 57 良好的生產(chǎn)操作 .......................................................................... 58 便于安裝與檢修 .......................................................................... 58 幾種設(shè)備布置的具體方式 ...................................................................... 58 塔的布置 ....................................................................................... 58 反應(yīng)器的布置 .............................................................................. 59 冷換設(shè)備的布置 .......................................................................... 59 第 6 章 非工藝部分 ................................................................................................ 61 車(chē)間布置（土建要求） .......................................................................... 61 廠址選擇的基本原則 .................................................................. 61 擬定選廠指標(biāo) .............................................................................. 62 總平面布置的要求 ........................