化工原理(第四版)習(xí)題解 第六章 蒸餾

1、86第六章第六章蒸餾相平衡相平衡【61】苯】苯(A)和甲苯和甲苯(B)的飽和蒸氣壓數(shù)據(jù)如下。的飽和蒸氣壓數(shù)據(jù)如下。溫度溫度℃苯飽和蒸氣壓苯飽和蒸氣壓()BpkPa?甲苯飽和蒸氣壓甲苯飽和蒸氣壓()BpkPa?溫度溫度℃苯飽和蒸氣壓苯飽和蒸氣壓()BpkPa?甲苯飽和蒸氣壓甲苯飽和蒸氣壓()BpkPa?80.184889296101.33113.59127.59143.72160.5238.844.4050.6057.6065.55100

2、104108110.6179.19199.32221.19234.6074.5383.3393.93101.33根據(jù)上表數(shù)據(jù)繪制總壓為根據(jù)上表數(shù)據(jù)繪制總壓為101.33kPa時(shí)苯一甲苯溶液的時(shí)苯一甲苯溶液的圖及圖及圖。此溶液服從拉烏圖。此溶液服從拉烏tyx?yx?爾定律。爾定律。解計(jì)算式為計(jì)算式為0000BAABpppxyxppp????計(jì)算結(jié)果見下表計(jì)算結(jié)果見下表苯甲苯溶液的甲苯溶液的計(jì)算數(shù)據(jù)計(jì)算數(shù)據(jù)txy??溫度溫度()t℃000B

3、ABppxpp???0Apyxp?80.184889296100104108110.61.0.....10133444082311359444???.....10133506065912759506???.....10133576050814372576???.....1013365660376160526566???.....1013374530256179197453???.....1013383330155199328333???

4、.....1013393930058221199393???01.0....113590823092310133??....127590659083010133??....143720508072110133??....160520376059610133??....179190256045310133??....199320155030510133??....221190058012710133??088的溶液加熱到的溶液加熱到118

5、℃時(shí)，全部汽化為飽和蒸氣。時(shí)，全部汽化為飽和蒸氣。.035x?習(xí)題習(xí)題62附圖附圖正庚烷正庚烷正辛烷正辛烷tyx圖【63】甲醇甲醇(A)丙醇丙醇(B)物系的汽液平衡服從拉烏爾定律。物系的汽液平衡服從拉烏爾定律。(1)試求溫度試求溫度、液相組成、液相組成（摩爾分?jǐn)?shù)）時(shí)的汽相平衡組成與總壓。（摩爾分?jǐn)?shù)）時(shí)的汽相平衡組成與總壓。80℃t?.05x?(2)試求總壓為試求總壓為、液相組成、液相組成（摩爾分?jǐn)?shù)）時(shí)的汽液相平衡溫度與汽相組成。（摩爾分

6、數(shù)）時(shí)的汽液相平衡溫度與汽相組成。.10133kPa.04x?(3)試求液相組成試求液相組成、汽相組成、汽相組成時(shí)的平衡溫度與總壓。組成均為摩爾分?jǐn)?shù)。時(shí)的平衡溫度與總壓。組成均為摩爾分?jǐn)?shù)。.06x?.084y?用Antoine方程計(jì)算飽和蒸氣壓方程計(jì)算飽和蒸氣壓(kPa)甲醇甲醇.lg..15749971973623886Apt????丙醇丙醇.lg.137514674414193Bpt????式中式中t為溫度，為溫度，℃。解(1))時(shí)

7、，時(shí)，80℃t?..1811，5093ABpkPapkPa????BABppxpp??????總壓總壓????....18115093055093116ABBpppxpkPa???????????汽相組成汽相組成...1811050781116Apxyp?????(2)已知已知..10133，04，求、pkPaxxy??時(shí)，甲醇沸點(diǎn)為時(shí)，甲醇沸點(diǎn)為64.7℃，丙醇沸點(diǎn)為，丙醇沸點(diǎn)為97.2℃，所求汽液相平衡溫度必在，所求汽液相平衡溫度必