Conference publications


XXIV conference

Application of Matlab-7 for model operation chemical processes

Veliyeva F.M., Ragimova N.M., Aliyev V.F.

National Academy of Sciences of Azerbaijan Azerbaijan, AZE 1025, ave. of Khojali 30, ph. (994 12) 490-24-76,

1 pp. (accepted)

Scientific and technical progress of chemical industry became possible thanks to simultaneous development of the theory and practice of a catalysis and engineering chemistry. Application of methods of mathematical model operation marked new approach to problems of the production catalysis. The MATLAB program is intended for realization of scientific calculations and high-quality visualization of the received results. The Statistics Toolbox package allows to carry out statistical calculations and data interpretation for creation of regression model of process. The optimization toolbox expansion is used for the solution of optimizing tasks by methods of non-linear programming when finding optimum conditions of carrying out process. Teams and the graphic interface of a Partial differential equations toolbox package can be used for mathematical model operation of processes in the conditions of a stationary and not stationary, calculation warm and a mass transfer. The Control System package is intended for model operation of systems of automatic control of the continuous and discrete. The package allows to construct a transfer function on an entrance and at the exit and to solve a problem of stability of process. The graphic interface allows constructing two and three-dimensional functioning graphs.

In the report results of kinetic researches of process of an oxidizing dehydrogenation 4 vinyltetrahydrobenzenes are given to EB ethyl benzene and ST styrene. The key kinetic parameters are calculated on Matlab-7 by a variation of initial fractional pressure 4-VTsG and O2 at various temperatures and rates of volume flow. The received results demonstrate formation of ET and ST as main products of reaction. The mathematical model of process was added with the equation of the mass and heat balance which allowed to receive variety of the concentration and temperature changes happening in the reactor by means of the graphic interface. Calculations for theoretical optimization came down to definition of an optimum temperature profile of reaction of W(t) =f (P) providing the maximal exit of ethyl benzene and styrene with the greatest selectivity from catalyst unit volume. The received results showed that carrying out process in the two-unit isentropic reactor allows to receive the maximal removal of a main product from unit of a surface of the catalyst.

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