Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

OP-III-19chemisorption heat and probability of bond dissociation, have been investigated. The resultsof this investigation permit to aggregate certain components used during construction of themathematical model. The proposed model contains material and heat balances equations:G∂C ∂C ∂Cϑ∂z ∂r ∂li i i⋅ =−u⋅ − ⋅ +см ∂T см ∂T k ∂Tρ⋅Cp ⋅G⋅ =−u⋅Cp ⋅ρ⋅ −ϑ⋅Cp⋅ρ⋅ + ∑Qj ⋅Wj∂z ∂r ∂lt=0 T=T0; r=0 Т=Т вх ; l=0 T=T вхWwhere j is the reaction number according to the process mechanism, i is the number of anindividual component or a hydrocarbon group, Z is the quantity of raw material processedafter last regeneration, V is the catalyst volume, G is the unit flow rate of crude oil, Ci is theconcentration of the i-th individual hydrocarbon or hydrocarbon group, C is the hydrogenconcentration, Lj is the hydrogen reaction order of the j-th reaction, T is the reactortemperature, Cp is the mixture heat capacity, Hj is the enthalpy of the j-th reaction, Wj is therate of the j-th reaction, l is a length of reactor.Experimental data for an industrial reforming process obtained on the Omsk refinery(Russia) were used for computation. The refinery has three reforming units: L-35-11/1000.Technological schemes contain three reactors for each unit. A block of computer programsbased on the proposed model for calculation of the industrial reforming unit works dependingon technological conditions.128