//Harriot P., 2003, Chemical Reactor Design (I-Edition), Marcel Dekker, Inc., USA, pp 436. //Chapter-6 Ex6.3.a Pg No. 248 //Title:Effect of Axial dispersion on conversion //==================================================================================================================== clear clc //INPUT u=1;//Superficial velocity (cm/s) D=2*10^(-5)//Molecular Diffusivity(cm2/s) Re=30;//Reynolds No. Pe_a=0.25;//Peclet No. corresponding Re No. from Fig 6.10 dp=3*(10^-1);//Particle Size (cm) L=48;//Length of the bed (cm) X_A=0.93;//Conversion //CALCULATION Pe_dash=Pe_a*L/dp;//Refer Pg.No.247 one_minus_X_A=(1-X_A); k_rho_L_by_u1=2.65;//From Fig6.12 for given Pe_dash X_A1=1-exp(-k_rho_L_by_u1); //To increase the conversion more catalyst is needed k_rho_L_by_u2=2.85;//From Fig6.12 X_A2=1-exp(-k_rho_L_by_u2); Percentage_excess_cat=((k_rho_L_by_u2-k_rho_L_by_u1)/k_rho_L_by_u1)*100; //OUTPUT //Console Output mprintf('\n The effect of axial dispersion is significant and the percentage excess of catalyst = %.0f%%',Percentage_excess_cat ); //File Output fid= mopen('.\Chapter6_Ex3_a_Output.txt','w'); mfprintf(fid,'\n The effect of axial dispersion is significant and the percentage excess of catalyst = %.0f%%',Percentage_excess_cat ); mclose(fid); //==============================================END OF PROGRAM=========================================================