Research and modeling of oil refining technological processes operating in the condition of stochastic uncertainty

Abstract

As it is known, one of the initial and important stages in the creation of optimal control systems of oil refining technological units is the development of a mathematical model that can adequately record the processes at any time.
 The operative and accurate measurement of all input and output variables is one of the important conditions in the development of a mathematical model of technological processes.
 Studies have shown that the lack of information about the state of complex oil refining processes in many cases reduces their efficiency and effectiveness. On the other hand, the wide range of both quality and quantity of raw materials for processing makes their efficiency even more unsatisfactory. Under these conditions, it is difficult to develop mathematical models that can adequately describes the static modes of technological processes; the development of mathematical models is relevant both in scientific and practical terms.
 A priori information required on input and output variables during normal operation of the technological complex in order to implement mathematical models identification for the vacuum block of the oil refining process unit is provided in the article. On the basis of this static information, mathematical dependencies were constructed between the variables characterizing the static mode of technological processes and the adequacy of the obtained mathematical models was confirmed through the statistical apparatus
 In order to solve the problems, the research was determined to be able adequately describe the current technological conditions, which can quickly adapt to current technological situations and ensure the production of oil fractions with relatively stable quality, regardless of the disturbing effects of the system

Development of adaptive control system for technological facility of primary oil refining

“…The experience of operating the optimal control systems of complex petrochemical and oil refining technological processes showed that the lack of information on the course of processes in many cases reduces their efficiency and productivity. On the other hand, the change in a wide range of quality indicators and consumption of raw materials for processing makes their efficiency even more unsatisfactory [1]. In some cases, this is due to the nonlinear and non-stationary dynamic characteristics of these systems [2].…”