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+//Harriot P.,2003,Chemical Reactor Design (I-Edition) Marcel Dekker,Inc.,USA,pp 436.
+//Chapter-9 Ex9.2 Pg No.389
+//Title: Model II-Fraction unconverted naphthalene
+//===========================================================================================================
+clear
+clc
+//INPUT
+D=2.13 ;//Reactor Diameter(m)
+L=7.9;//Reactor length (m)
+dp_bar= 53*10^(-6);//Particle size (m)
+u_mf=0.077;//Minimum fluidzation velocity(cm/s)
+u_mb=0.5;//Minimum bubbling velocity(cm/s)
+rho_bulk=770;//Bulk density (kg/m3)
+rho_b=350;//Density (kg/m3)
+Epsilon_m=0.44;//Porosity of bed
+T_K=636;//Reaction Temperature (K)
+P=266;//Reaction Pressure (kPa)
+k_1=1.8;//Reaction rate constant (sec-1)
+k_2=k_1;
+u0=0.43;//Velocity (m/sec)
+C0=2*10^(-2);//Initial concentration (%)
+
+//CALCULATION
+k=k_1+k_2;
+one_minus_epsilon=(1-Epsilon_m)*(rho_b/rho_bulk);
+k_corrected=k*one_minus_epsilon;//based on bed volume
+Nr=k_corrected*L/u0;
+K=0.8;//From figure 9.12 at u0=0.43m/sec Pg No.376
+Nm=K*L/u0;//Refer equation 9.21 Pg No.371
+N=1/((1/Nm)+(1/Nr));//Refer equation 9.22 Pg No.371
+X=(1-exp(-N));//Refer equation 9.23 Pg No.371
+C_out=(1-X)*C0;
+C_out_ppm=C_out*(10^6);
+
+//OUTPUT
+mprintf('\nThe fraction of naphthalene unconverted is %0.0f ppm ',C_out_ppm);
+
+//FILE OUTPUT
+fid= mopen('.\Chapter9-Ex2-Output.txt','w');
+mfprintf(fid,'\nThe fraction of naphthalene unconverted is %0.0f ppm ',C_out_ppm);
+mclose(fid);
+
+
+//===========================================END OF PROGRAM=================================================
+
+
+