【正文】 ...................4 .....................................................................4 設(shè)計(jì)方案簡(jiǎn)介 ................................................................5第二章 塔板的工藝設(shè)計(jì) .................................................................6 精餾塔全塔物料恒算 ..............................................................6 原料液及塔頂、塔底產(chǎn)品的摩爾分率 X...........................................6 原料液、塔頂、塔底產(chǎn)品的平均摩爾流量 M.......................................6 物料衡算 ....................................................................6 .....................................................................6 理論塔板數(shù)的求取 ............................................................6 實(shí)際塔板數(shù)的求取 ............................................................9 ..............................................................11 ....................................................................11 平均溫度 ...................................................................11 平均摩爾質(zhì)量 ...............................................................11 ....................................................................12 ................................................................13 ....................................................................14，液相負(fù)荷 ........................................................15 ........................................................15 ..................................................................15 ........................................................17 ..........................................................18 板上流體流程 ...............................................................18 ....................................................................18 ....................................................................20 ..............................................................21 ....................................................................21 ....................................................................22 ....................................................................23 漏液 .......................................................................2350000 噸乙醇～水篩板精餾塔及附屬設(shè)備設(shè)計(jì)1 ........................................................................23 ..................................................................24 漏液線 .....................................................................24 霧沫夾帶線 .................................................................24 液相負(fù)荷下限線 .............................................................25 液相負(fù)荷上限線 .............................................................25 液泛線 .....................................................................25第三章 板式塔的結(jié)構(gòu)與附屬設(shè)備 .......................................................28 塔體結(jié)構(gòu) .......................................................................29 塔頂空間 ...................................................................29 塔底空間 ...................................................................29 ....................................................................29 塔高 .......................................................................29 塔板結(jié)構(gòu) .......................................................................29 ........................................................................30 接管 .......................................................................30 法蘭 .......................................................................30 ......................................................................30 ........................................................................31（包括熱量衡算）的選擇 ....................................................31 ......................................................................31 ......................................................................31 ..................................................................31 再沸器（包括熱量衡算）的選擇 ...................................................32第四章 塔的機(jī)械設(shè)計(jì) ..................................................................34 ........................................................................34 ..................................................................35 ...................................................35 ................................................................35參考文獻(xiàn) .............................................................................36附錄 .................................................................................37附錄 1 AUTOCAD法求最小回流比及理論塔板數(shù) ...........................................371 最小回流比的求取 ...............................................................372 確定理論板 .....................................................................38附錄 2 精餾塔負(fù)荷性能圖的 VBA 程序 ..................................................39附錄 3 主要符號(hào)說(shuō)明 .................................................................41附錄 4 精餾塔的工藝流程圖（見(jiàn)圖紙 1） ...............................................42附錄 5 精餾塔的設(shè)備布置圖（見(jiàn)圖紙 2） ...............................................42結(jié)論與設(shè)計(jì)心得 .......................................................................42致 謝 ................................................................................4350000 噸乙醇～水篩板精餾塔及附屬設(shè)備設(shè)計(jì)2年產(chǎn) 50000噸乙醇～水篩板精餾塔及附屬設(shè)備設(shè)計(jì)作者 張紹勇 指導(dǎo)教師 蔡崇林摘 要：乙醇水是工業(yè)上最常見(jiàn)的溶劑，也是非常重要的化工原料之一，是無(wú)色、無(wú)毒、無(wú)致癌性、污染性和腐蝕性小的液體混合物。因其良好的理化性能，廣泛地應(yīng)用于國(guó)民經(jīng)濟(jì)的許多部門(mén),近些年來(lái)，由于燃料價(jià)格的上漲，乙醇燃料越來(lái)越有取代傳統(tǒng)燃料的趨勢(shì)。因此，研究和改進(jìn)乙醇水體系的精餾設(shè)備是非常必要的。關(guān)鍵詞：乙醇水；精餾塔設(shè)計(jì)；附屬設(shè)備設(shè)計(jì)； 機(jī)械設(shè)計(jì)50000 噸乙醇～水篩板精餾塔及附屬設(shè)備設(shè)計(jì)3The design of Sieve distillation tower and Ancillary equipment (Ethanol～ water is produced 50000tons/year)Abstract: Ethanolwater is one of the most mon industrial solvents and important chemical raw materials,which is colorless,nontoxic, nonpollution,noncarcinogenic,and little corrosive. Due to its good physical and chemical properties ,Ethanolwater is widely used in many national economic sectors. In recent years, because of the rising prices of fuel