n1(y)1+S=Ln(x,)+D(x,) 3-36) Vn+(ys)m+=Ln(xs) S,=L,(xs) Sn=S+Vn(ys) (3-38) Ln=I+S+S Cps(T-T)/AH Vnl=l +D-s L=ln+S+S·Cs(Tm-TH, (3-41) L +s 3-43) Bx y (B-1)x xs (3-45) (1-)L B ys x,+x2 (3-46) aist x2 B>0.05 x 3-47 (1-B)L x 或 (1-B)L 若B=0,,当进料为饱和蒸汽时,则x。=x x <x ()w=S/w( ) ( ) ( )s D V + S = L + D x n+1 s n+1 n s n y x (3-36) ( ) ( ) n 1 s n 1 n s n V y + S = L x + + (3-37) ( ) n n s n S = L x ( ) n n 1 s n 1 y + + S = S +V (3-38) ( ) n S S C Tn Ts Hv Ln = l + + • P,S −  (3-39) Vn+1 = Ln + D − S (3-40) ( ) m S S C Tm Ts Hv Lm  = l + + • P,S −  (3-41) V = L − (W + S) m +1 m (3-42) Vys + S = Lxs (3-43) ( ) s s s 1 1 x x y + − =   (3-44) ( )         − − − = s s 1 1 x D L S x   (3-45) 1s 1 2s 2 1 2 s 2 2s s 1 1s s 1 2 s s s s 1 x x x x x x x x x x x 1 x x 1 y y      + + = + • + = − − = (3-46)   0.05 ( )         − −  + = s s 1 1 x W L S x   (3-47) ( ) L S x L S x   −  s = 或 s 1  s s L x   当进料为 则 s s 若  = 0，， 饱和蒸汽时， x = x s s x  x (xs )W = S W