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分離甲醇——乙醇浮閥精餾塔化工原理課程設(shè)計(jì)畢業(yè)論文-文庫吧資料

2025-07-02 08:12本頁面
  

【正文】 時(shí)間以使氣體從液相中分離出。L??3 塔徑的確定,需求 = C ,C 由下式計(jì)算:???????????????????????????20C由 Smith 圖查取。39。39。 TE奧—康奈爾關(guān)聯(lián)式: )(9.??LT?式中: ——塔內(nèi)液體在塔底和塔頂平均溫度下的揮發(fā)度? ——塔內(nèi)液體在塔底和塔頂平均溫度下的粘度 L?(其中 為加料中 i 組分的摩爾分?jǐn)?shù), 為液相中 i 組分的粘度)ix??ix i?查得甲醇的粘度 乙醇的粘度smPaAL?? smPaBL?? ?????? 365)(.)1(?相對(duì)揮發(fā)度 78.?%.)04(. ????TE由 ,則 ?三 精餾塔的結(jié)構(gòu)設(shè)計(jì) 塔的結(jié)構(gòu)設(shè)計(jì) 精餾塔塔徑的計(jì)算:甲醇: 得: ???TPA? 乙醇: 得: 650B?將 , 代入 進(jìn)行試差,求塔頂、進(jìn)料板、及塔釜的壓力和溫?APBxA???度:1)塔頂: = + = 102kPa, = = , 試差得 = ??1 ???? DxDt℃2)進(jìn)料板位置:11精餾段實(shí)際板層數(shù): = 10/ % 18??精 ≈每層塔板壓降: = ???進(jìn)料板壓力: = + 18=, = =, 試差得 = ???? ???? ???? ???? ℃3 提餾段實(shí)際板層數(shù): = 38-18=20??提 塔釜壓力: = + 37 = ???? 塔釜: = = , 試差得 = ???????? ???? ℃求得精餾段及提餾段的平均壓力及溫度:精餾段: = ℃???? ??FDt = kPa???? 108FP提餾段: = ℃??,?? ??FWt = kPa??,?? .10FP:塔頂: = +(1 ) =???????? ? = +(1 ) = ???????? ? 進(jìn)料板: = +(1 ) = kg/kmol???????? ? = +(1 ) = kg/kmol???????? ? 塔釜: = +(1 ) = kg/kmol???????? ? = +(1 ) = kg/kmol???????? ? 精餾段平均摩爾質(zhì)量: = = ??????????????+????????2 = =??????????????+????????2 提餾段平均摩爾質(zhì)量: = = kg/kmol ??,????????????+????????2 = = kg/kmol??,????????????+????????2:1)汽相平均密度計(jì)算:??????= ????????精餾段汽相平均密度: = = ??????= ?????????????? )(????3提餾段汽相平均密度: = = = ??,???? ??,????,????????, )(????32)液相平均密度計(jì)算: = 1????∑????????塔頂: = kg/ , = kg/???? ??3 ???? ??3 得 : = = = kg/????????1????????+???????? ???3進(jìn)料板: = , = kg/???? ??3 ???? ??3 得: = = = kg/????????1????????+???????? ???3塔釜: = , = kg/???? ??3 ???? ??3得: = = = kg/????????1????????+???????? ???3精餾段液相平均密度: = = kg/?????? 28674??3提餾段液相平均密度: = = kg/??,???? .. ??3液體平均表面張力按下式計(jì)算: Lmix???塔頂: = ,由《化工原理》 (第三版,化學(xué)工業(yè)出版社,陳敏恒)附錄??1 ℃= , = ???? ????得: = +(1 ) = +() = ??????????1???? ??1 ???? 進(jìn)料板: = ,查手冊(cè): = , = ???? ℃ ???? ???? 得: = +(1 ) = +() = mN/m???????????????? ???? ???? 塔釜: = ,查附錄: = mN/m, = ???? ℃ ???? ????得: = +(1 ) = +() = mN/m???????????????? ???? ???? 精餾段液體表面平均張力: = = ??????????????+????????2提餾段液體表面平均張力: = = mN/m??,????????????+????????2 : 液體平均黏度按下式計(jì)算: = ??????????∑????????????塔頂: = ℃??1查由《化工原理》 (第三版,化學(xué)工業(yè)出版社,陳敏恒)附錄= mPa , = mPa???? ??? ???? ??? 得: = = ????????10∑???????????? ?
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