为保证最终出口浓度≤0.205kmol/m3,应需7个反应釜串联。
VRCB0xBV(?r)?qV?RBq?rB,CB0xB 12、VqV?VR(?rB)VRk1?CA0?CB0xB?CB0?1?xB??CB0xBCB0xB0.12?0.2?1.4?0.8?0.75??1?0.75?m3??0.00640.75min
qVA?qVBqV0.0064m3???0.003222min
VSxA?qkS(1?xA) ,V13、
VP11?lnqVkp1?xAVP?VP与VS的关系:
kSkPVS(1?xA)lnxA11?xA
11xA?lnk(1?xA)kp1?xA
若VP=VS,则,SkS?∴,
xAkP1(1?xA)ln1?xA?0.6kP1(1?0.6)ln1?0.6?1.64kP 求反应温度,
?ERT2?ERT1A??E/RT∵,k?Ae
kPe?ERT1?kSe?ERT2,kS=1.64kP,∴,e?1.64e
?E?E?83740?ln1.64??0.495???23.3RT2RT18.314?423
T2?∴,
?83740?432K8.314?(?23.3)