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Article · КазУТБ · January 1, 2019

DEVELOPMENT OF MATHEMATICAL MODELS OF THE MAIN UNITS OF THE SULFUR PRODUCTION UNIT BASED ON SYSTEM ANALYSIS

Batyr Orazbayеv, N.N. Seitova, Kulman Orazbayeva, Б.А. Серимбетов, V.E. Мakhatova

Batyr Orazbayev
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Abstract

A methodology has been proposed for constructing a package of models for technological systems composed of interconnected units, based on diverse available information. This methodology is demonstrated through the development of models for the main units of the sulfur production block. The models describing the relationship between sulfur yield at the reactor outlets and their input and operating parameters were identified as a system of multiple regression equations, using aggregated experimental, statistical, and expert data, along with the sequential inclusion of regressors approach. Models assessing the sulfur quality at the Claus reactor outlet were constructed as fuzzy regression equations. Parametric identification of the regression coefficients was performed using the least squares method in the REGRESS software package, while fuzzy regression coefficients were determined using modified least squares and α-level sets within the framework of fuzzy set theory. As a result, mathematical models of the thermoreactor and Claus reactor at the Atyrau refinery’s sulfur production unit were developed.

Control Systems and IdentificationFault Detection and Control SystemsFuzzy Logic and Control Systemsmathematical modelingmultiple regression modelfuzzy regression

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