求助,求详细解题过程? 根据全混流反应器公式v r /q 0 =(c a0 -c a )/kc a 将相关数据带入公式可得v r =0.8x a /(1-x a ) l=aq 0 c p -bv r =40x a -1.6x a /(1-x a ) 对上式求导可得dl/dx a =40-1.6/(1-x a ) 2 当dl/dx a =40-1.6/(1-x a ) 2 =0时,l有最大值 解得x a =0.8 因此v r =0.8x a /(1-x a )=3.2m 3 l=40x a -1.6x a /(1-x a )=25.6元/h 查看更多