反应工程课件ppt
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a =2, b = 1, c = 2, B = 5/2 = 2.5, C = 1/2 = 0.5, I = 10/2 = 5
例2.1
2A + B → 2C 在一间歇反应器中进行 CA0 = 2 kmolm-3，CB0 = 5 kmolm-3，CC0 =1 kmolm-3， CI0 = 10 kmolm-3。其中I为溶剂，不参与反应。 假定反应液的密度不变，试求xA = 80 %时各组分的浓度 和摩尔分率。
A b aB c aC d aD
1. In the Batch Reactor
Suppose that nA0 is the initial amount of A in the reactor at
time t=0, and that nA is the amount of A at time t . Then the
yD
yA0[ D (d / a)xA ] 1 A xA
yI
yA0 I 1 A xA
(2.15) (2.16) (2.17) (2.18) (2.19)
例2.1
2A + B → 2C 在一间歇反应器中进行 CA0 = 2 kmolm-3，CB0 = 5 kmolm-3，CC0 =1 kmolm-3， CI0 = 10 kmolm-3。其中I为溶剂，不参与反应。 假定反应液的密度不变，试求xA = 80 %时各组分的浓度 和摩尔分率。
a =2, b = 1, c = 2, B = 5/2 = 2.5, C = 1/2 = 0.5, I = 10/2 = 5
教材和讲义
1. 王安杰，周裕之，赵蓓. 化学反应工程学. 化学工业出版社
2. O. Levenspiel Chemical Reaction Engineering. John Wiley & Sons, Inc. 1999.
3. I. Chorkendorff, J.W. Niemantsverdriet. Concepts of Modern Catalysis and Kinetics. WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2003.
Reaction rate
2 . 1 Conversion and Molar Fraction
Conversion
In the Batch Reactor In the Steady-State Flow Reactor
Molar Fraction
2 . 1. 1 Conversion
2. Chemical Reaction Kinetics
2.1 Conversion and Molar Fraction 2.2 Rate equation 2.3 The reaction order 2.4 Temperature Dependence of Reaction Rate 2.5 Kinetic theory 2.6 Autocatalytic Reactions
催化反应工程
Catalytic Reaction Engineering
李翔 西部校区化工实验楼B325 Xiang Li B-325, Chemical Engineering
Laboratory, Western Campus Tel： 84986124 E-mail: lixiang@dlut.edu.cn
C nC0 / nA0
(2.4)
nD nA0 D d / axA
D nD0 / nA0
(2.5)
2 . 1. 1 Conversion
Suppose that I is an inert, then ：
nI nI 0 nA0I
(2.6)
nt0 is the initial amount of A in the reactor at time zero, nt is the
xA FA0 FA FA0
xAf FA0 FAf FA0
(2.11) (2.12)
2 . 1. 2 Molar Fraction
Batch Reactor： Steady-State Flow Reactor：
yA nA / nt yA FA / Ft
(2.13) (2.14)
amount of all components at time t :
Байду номын сангаас
nt nt0 a b c d a nA0xA
(2.7)
nt nt0 1 A yA0 xA nt0 1 AxA
(2.8)
Expansion Factor： A a b c d a
(2.9)
yA0 nA0 / nt0
Expansion Ratio： A A yA0
(2.10)
2 . 1. 1 Conversion
The Steady-State Flow Reactor
Since the composition in steady-state reactor is uniform throughout, the conversion is given by：
conversion of A in constant volume system is given by
xA nA0 nA nA0
(2.1)
nA nA0 1 xA
(2.2)
nB nA0 B b / axA
B nB0 / nA0
(2.3)
nC nA0 C c / axA
The expressions of molar fraction for he two systems are same
yA
yA0 (1 xA )
1 A xA
yB
yA0[ B (b / a) xA ] 1 A xA
yC
yA0[C (c / a) xA ] 1 A xA
例2.1
2A + B → 2C 在一间歇反应器中进行 CA0 = 2 kmolm-3，CB0 = 5 kmolm-3，CC0 =1 kmolm-3， CI0 = 10 kmolm-3。其中I为溶剂，不参与反应。 假定反应液的密度不变，试求xA = 80 %时各组分的浓度 和摩尔分率。
A b aB c aC d aD
1. In the Batch Reactor
Suppose that nA0 is the initial amount of A in the reactor at
time t=0, and that nA is the amount of A at time t . Then the
yD
yA0[ D (d / a)xA ] 1 A xA
yI
yA0 I 1 A xA
(2.15) (2.16) (2.17) (2.18) (2.19)
例2.1
2A + B → 2C 在一间歇反应器中进行 CA0 = 2 kmolm-3，CB0 = 5 kmolm-3，CC0 =1 kmolm-3， CI0 = 10 kmolm-3。其中I为溶剂，不参与反应。 假定反应液的密度不变，试求xA = 80 %时各组分的浓度 和摩尔分率。
a =2, b = 1, c = 2, B = 5/2 = 2.5, C = 1/2 = 0.5, I = 10/2 = 5
教材和讲义
1. 王安杰，周裕之，赵蓓. 化学反应工程学. 化学工业出版社
2. O. Levenspiel Chemical Reaction Engineering. John Wiley & Sons, Inc. 1999.
3. I. Chorkendorff, J.W. Niemantsverdriet. Concepts of Modern Catalysis and Kinetics. WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2003.
Reaction rate
2 . 1 Conversion and Molar Fraction
Conversion
In the Batch Reactor In the Steady-State Flow Reactor
Molar Fraction
2 . 1. 1 Conversion
2. Chemical Reaction Kinetics
2.1 Conversion and Molar Fraction 2.2 Rate equation 2.3 The reaction order 2.4 Temperature Dependence of Reaction Rate 2.5 Kinetic theory 2.6 Autocatalytic Reactions
催化反应工程
Catalytic Reaction Engineering
李翔 西部校区化工实验楼B325 Xiang Li B-325, Chemical Engineering
Laboratory, Western Campus Tel： 84986124 E-mail: lixiang@dlut.edu.cn
C nC0 / nA0
(2.4)
nD nA0 D d / axA
D nD0 / nA0
(2.5)
2 . 1. 1 Conversion
Suppose that I is an inert, then ：
nI nI 0 nA0I
(2.6)
nt0 is the initial amount of A in the reactor at time zero, nt is the
xA FA0 FA FA0
xAf FA0 FAf FA0
(2.11) (2.12)
2 . 1. 2 Molar Fraction
Batch Reactor： Steady-State Flow Reactor：
yA nA / nt yA FA / Ft
(2.13) (2.14)
amount of all components at time t :
Байду номын сангаас
nt nt0 a b c d a nA0xA
(2.7)
nt nt0 1 A yA0 xA nt0 1 AxA
(2.8)
Expansion Factor： A a b c d a
(2.9)
yA0 nA0 / nt0
Expansion Ratio： A A yA0
(2.10)
2 . 1. 1 Conversion
The Steady-State Flow Reactor
Since the composition in steady-state reactor is uniform throughout, the conversion is given by：
conversion of A in constant volume system is given by
xA nA0 nA nA0
(2.1)
nA nA0 1 xA
(2.2)
nB nA0 B b / axA
B nB0 / nA0
(2.3)
nC nA0 C c / axA
The expressions of molar fraction for he two systems are same
yA
yA0 (1 xA )
1 A xA
yB
yA0[ B (b / a) xA ] 1 A xA
yC
yA0[C (c / a) xA ] 1 A xA