rB=2400cA[kmol/(m3·h)]
式中,cA为液相中氧气的浓度,单位为kmol/m3。空气加入量为理论用量的1.25倍。要求邻二甲苯氧化率为16%,试计算反应体积。
数据:氧在邻二甲苯中的扩散系数DAL=1.44×10-5cm2/s,氧的溶解度系数HA=7.875×10-8kmol/(m3·Pa),气含率εG=0.2293,液相传质分系数kL=0.07702cm/s,比相界面积a=8.574cm-1,液相密度ρL=0.75g/cm3。气膜阻力可以忽略。
第1题
Peter is experiencing a difficult time in his life.
A.going into
B.going out of
C.going over
D.going through
第2题
A.physically
B.psychologically
C.emotionally
D.intelligently
第3题
Peter is experiencing a difficult period in his life.
A.going into
B.going out of
C.going over
D.going through
第4题
A.physically
B.psychologically
C.emotionally
D.intelligently
第5题
Peter is experiencing a difficult period in his life.
A.going into
B.going out of
C.going over
D.going through
第6题
Peter is experiencing a difficult period in his life.
A.going into
B.going out of
C.going over
D.going through
第7题
Peter is experiencing a difficult period in his life.
A.going into
B.going out of
C.going over
D.going through
第8题
His father’s death gives him a whole new ______ on life.
A、motivation
B、perspective
C、impact
D、impression
第9题
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