A Computer Model of the Evaporator for the Development of an Automatic Control System

7th International Scientific Practical Conference "Innovative Technologies in Engineering"

Kozin, K.A.^1 ; Efremov, E.V.^1 ; Kabrysheva, O.P.^1 ; Grachev, M.I.^1

Institute of Physics and Technology, Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk

634050, Russia^1

关键词: Computer modeling;    Control channels;    Evaporation process;    Mathematic simulations;    Nuclear fuel cycles;    Phase equilibriums;    Spent nuclear fuel reprocessing;    Technological process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/142/1/012043/pdf
DOI  :  10.1088/1757-899X/142/1/012043

来源: IOP

【 摘 要 】

For the implementation of a closed nuclear fuel cycle it is necessary to carry out a series of experimental studies to justify the choice of technology. In addition, the operation of the radiochemical plant is impossible without high-quality automatic control systems. In the technologies of spent nuclear fuel reprocessing, the method of continuous evaporation is often used for a solution conditioning. Therefore, the effective continuous technological process will depend on the operation of the evaporation equipment. Its essential difference from similar devices is a small size. In this paper the method of mathematic simulation is applied for the investigation of one-effect evaporator with an external heating chamber. Detailed modelling is quite difficult because the phase equilibrium dynamics of the evaporation process is not described. Moreover, there is a relationship with the other process units. The results proved that the study subject is a MIMO plant, nonlinear over separate control channels and not selfbalancing. Adequacy was tested using the experimental data obtained at the laboratory evaporation unit.