8.4.1 Equation of rate for mass transfer with convection I Individual coefficient in LP N L Pi-pi A p1)= H Individual coefficient in GP N pG-p A 总传质系数 Overall coefficient 11H 令 G G 总传质推动力(两相) Then K.(PG-pr Overall driving force8.4.1 Equation of rate for mass transfer with convection G G L 1 1 H = + K k k 令： * Then : N = K (p - p ) A G G L G i A G p - p N = 1 k * L i L * A i L L k p - p N = (p - p ) = H H k 总传质系数 Overall coefficient 总传质推动力（两相） Overall driving force Individual coefficient in GP Individual coefficient in LP