Chemical Reaction Engineering T-万=A0en-cA7 绝热温升 A7。=7-Iam-Acn pcp 含义 A7=(-A1,C8= 反应物全部转化放出的热量 VoP.CP 物系升温1℃所需热量
Chemical Reaction Engineering 绝热温升 含义 物系升温 ℃所需热量 反应物全部转化放出的热量 1 ( ) 0 0 0 = − = P A a d v C H v C T
Chemical Reaction Engineering 二、理想间歇反应器计算 号会-会 dt →t=n⅓0JkoV(-tA) 恒容时: =c 简单反应:A→P(-r)=kC 解法:(①)解析解(2)图解法
Chemical Reaction Engineering 二、理想间歇反应器计算 n A A 简单反应: A ⎯k →P (−r ) = kC 解法:⑴ 解析解 ⑵ 图解法 − = Af A x x A A A V r dx t n 0 ( ) 0 − = Af A x x A A A r dx t C 0 ( ) 0 − = − Af A C C A A r dC t 0 ( ) 恒容时: dt dc dt dx V n r A A A − A = = − 0 ( )
Chemical Reaction Engineering (①)解析解 恒容时: 一级反应 )=kC 1=CAn-x)R1-w kt=In C
Chemical Reaction Engineering A A 一级反应 (−r ) = kC A f x A A A A kC x k x d x t C Af − = − = 1 1 ln 1 (1 ) 0 0 0 Af A C C kt 0 = ln kt Af A C C e − = 0 ⑴ 解析解 − = Af A x x A A A r dx t C 0 ( ) 0 − = − Af A C C A A r dC t 0 ( ) 恒容时:
Chemical Reaction Engineering (2)图解法 恒容时: -c A 0 A CA
Chemical Reaction Engineering ⑵ 图解法 − = Af A x x A A A r dx t C 0 ( ) 0 − = − Af A C C A A r dC t 0 ( ) 恒容时:
Chemical Reaction Engineering 双组分反应aA+bB>pP (-)=kC CB 若B大大过量,即CBo>C40 则 ()=kC 称为拟-级反应,k'=kCB
Chemical Reaction Engineering A A CB (−r ) = kC •双组分反应 aA+ bB→ pP 若B大大过量,即 则 称为拟一级反应, CB0 CA0 A CA (−r ) = k' B k' = kC