化学工程基础习题答案（武汉大学 第二版）(6)

（2）

qn,Cqn,B??Y1?Y2X1?X20.0526?0.0026369?2.46980.02023

qn,C=2.4698?21.602=53.35mol.s-1XA1?n

53.35?3600n=0.02023×53.35×3600=3885.37mol m=58×3885.37=225.4kg （1）另解：

qn,Cqn,B??Y1?Y2X1?X20.0526?0.0026369?2.46980.02023

气相传质单元数：

NOG??mqY?mX2mqn,B?1ln?(1?n,B)1??mqn,B?qY?mYq??n,C22n,C?1?qn,C11?20.0526?02? ?ln?(1?)?2.46980.0026372.4698????22.4698?8.028HOG?H6??0.7474m NOG8.028qn,BKY2?SKY2?qn,BHOG?s?21.6020.7474??57.5mol.m3.s1又HOG??d42

（3）若填料层增加3m，则：

'NOG?H'9??12.042m HOG0.747421

NOG?11?22.4698Y2'?0.0011?20.05262?ln?(1?)???2.4698Y'2.46982??

又 液气比一定，则：

Y1?Y2'?2.4698,X1'?4004.45molm?58n'?232.26kg则：

?m?232.26?225.4?6.9kgX1'?0.02085n'?X1'qn,B?0.02085?53.35?3600

13解：（1）

100?22.432Y1??0.07531001000??22.432

Y2?0.0753?(1?0.98)?0.0015X1?0.0196X2?00.278?1000?12.41mol.s?122.4qn,B(Y1?Y2)?qn,C(X1?X2)qn,B?12.41?(0.0753?0.0015)?qn,C(0.0196?0)qn,C?46.72mol.s?1?0.84kg.s?1

（2）

H?HOG?NOG

Y1=0.073 Y2=0.0015 X1=0.0196 X2=0

Y1*=1.15X1=0.0225 Y2*=1.5X2=0

22

??Ym?(Y1?Y1*)Y1?Y1*lnY2?Y2*

?0.073?0.0025?0.0015?0.0180.073?0.0025ln0.0015NOG?Y1?Y2?Ym

?0.0753?0.0015?4.10.0180.5?1000HOG?22.4?0.845m

26.41H?4.1?0.845?3.46m 14解： （1）HOG?H NOGY1=0.025 Y2=0.0045 X1=0.008 X2=0

Y1*=1.5X1=0.012 Y2*=1.5X2=0

??Ym?(Y1?Y1*)*Y1?Y1lnY2?Y2*

?0.025?0.012?0.0045?0.0080.025?0.012ln0.0045 23

NY1?Y2OG??Ym

?0.025?0.00450.008?2.56H10OG?2.56?3.91m （2）当Y2'?0.003时

qn,Cq?Y1?Y2?Y1?Y?2n,BX1X? 1

0.025?0.00450.0.008?025?0.003X?1X?1?0.0086

?Y1?Y1?Y1

?0.025?1.5?0.0086?0.0121?Y2?Y2?Y2?0.003 ?Y??Y2m??Y1ln?Y1?Y2

?0.0121?0.003?0.ln0.012100650.003NY1?Y2OG??Ym

?0.025?0.0030.0065?3.38H??HOG?NOG?3.91?3.38?13.2m H?13.2?10?3.2m

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第六章 精馏

P244 ex2.(1)

??qn,F?qn,D?qn,W? ??qn,FxF?qn,Dxd?qn,Wxw100?qn,D?qn,W100?0.3?qn,D?095?qn,W?0.05qn,D?27.78?kmol?h?1qn,W?72.22?kmol?h?1

(2)qn,L??qn,L??qn,F

qn,L?R?D?27.78?3.5?97.23kmol?h?1 ??1

qn,L??97.23?100?197.23kmol.h?1

qn,V?qn,L?qn,D?97.23?27.78?125.01Kkmol.h?1 qn,V??qn,V?125.01kmol.h?1

??qn,F?qn,D?qn,W(3)?

qx?qx?qx?n,DD n,Ww?n,FF

235?qn,D?qn,W235?0.84?0.98qn,D?0.002qn,Wkmol.h?1

qn,D?201.4qn,W?33.6R?1, ??1

qn,L?201.4

qn,L??qn,L?qn,F?436.4?kmol.h?1

qn,V?qn,L?qn,D?402.8

qn,V?qn,V??402.8?kmol.h?1

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