“Giprosintez” LLC, Volgograd, Russia:

F. P. Sokolov, Chief Executive Officer, e-mail: info@giprosintez.ru
A. V. Sukhova, Deputy Chief Engineer of Project
V. A. Samsonov, Technical Director

This article gives the results of technological process modeling of trichlorosilane production with the help of software package Aspen ONE, calculating the example of trichlorosilane synthesis reactor. The block diagram of the calculation algorithm for fluidized-bed reactor was developed. The calculation procedure for reactor synthesis consists of five stages: reactor productivity and fineness of powdered technical silicon; determination of basic hydrodynamic parameters; choice of internal diameter of cylindrical part of reactor; determination of fluidized bed height and separation space height above the layer; determination of the height of cylindrical part of reactor; determination of required heat exchange surface. A new model of reactor was developed for modeling of TCS synthesis process in fluidized bed module with the help of Aspen Custom Modeler software of Aspen ONE complex. Mathematical model for simulation of reactor fluidized bed was implemented as software and was added to the Aspen Plus library. The software set Aspen ONE and system of three-dimensional design AVEVA PDMS were used for creation of process flow chart. The practical experience of trichlorosilane production design showed that the Aspen Plus program set ensures the consistency of data for modeling of chemical processes, reduces the time for the project, and makes the designing process more convenient. Application of modern computer technologies for plants designing is an urgent task. The useful model of the reactor and approach to trichlorosilane production were patented.

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