Synthesis of an optimal control system for a primary oil refining process

✍ Scribed by G.M. Bakan; V.M. Kuntsevich

• Publisher: Elsevier Science
• Year: 1973
• Tongue: English
• Weight: 870 KB
• Volume: 9
• Category: Article
• ISSN: 0005-1098
• DOI: 10.1016/0005-1098(73)90077-0

✦ Synopsis

As confirmed by experimental results, a simple mathematical model of a complex oil refining column may be used to determine the controls whieh maximize the production of a specified petroleum product or a group of byproducts.

Summary--A brief description of the engineering process of a primary oil refining in complex columns is given. The fundamental perturbations and controls are selected. It is shown, that when the optimality criterion is the requirement to obtain the maximum amount of a specified petroleum product or of a group of adjacent petroleum products, the optimal control problem reduces to the problem of stabilizing the separation boundary conditions. Using the results of [3,5], static models of simple columns are obtained in the form of functional relations containing vectors of the unknown parameters. On the basis of the detailed analysis carried out, the possibility of linearizing the model equations with respect to its parameters has been established in the neighborhood of some reference point. Thus, the problem of synthesizing an optimal control law is reduced to seeking optimal strategies minimizing the risk for a linear control plant containing random parameters. Certain results of an experimental test of the performance of the synthesized algorithms when the operating column is controlled by a digital computer are presented in conclusion.