ЗАДАЧІ ОПТИМІЗАЦІЇ ЗНЕВОДНЕННЯ ТА ГРАНУЛЮВАННЯ МІНЕРАЛЬНИХ ДОБРИВ У ПСЕВДОЗРІДЖЕНОМУ ШАРІ

Анотація

Розглянуто задачу статичної оптимізації зневоднення та гранулювання мінеральних добрив у псевдозрідженому шарі за квадратичним критерієм якості. Одержано оптимальні значення витрат вихідного розчину й теплоносія – повітря.


Commercial operation of pellet fluidized bed shows that the reliable operation of such a technological system affects a large number of factors. Their impact on the stability of a technological system for the production of fertilizers with desired properties is still not investigated in full. Despite the fact that some production work for over 25 years, the optimal regime of granulation and drying processes to be found.

The aim of the paper is to investigate the process of obtaining continuous granulated product of a given dispersion composition. The results of static optimization of the process of dehydration and granulation with water solutions of ammonium sulfate using fluid bed granulator are considered.

There are many approaches to the optimization problem. Given the nature of the process optimization is feasible by changing the air flow and discharge of the product from the apparatus to maintain a given pressure drop in the reservoir. Chance of a different formulation of the optimization problem is show. It is proposed to consider air flow control actions and the cost of the initial solution.

In the analysis of processes involving phase transition, in terms of optimization, a material effect on the kinetics of the process with energy performance. Minimizing temperature deviation layer and spending power to carry out the process, was chosen as a quadratic criterion.

The application of static optimization by quadratic quality criterion to determine the effect of temperature on energy efficient process parameters is considered. To ensure the sustainability of the load for a working solution must adequately increase the temperature of the coolant at the inlet to the machine. Increasing the mass flow of liquid agent – coolant spending limit at which the rate of coolant in the machine is equal to the minimum rate of removal of particles.

Solution of the problem connected static optimization by quadratic quality criterion. Temperature dependence of the layer of control actions showed the presence of pronounced local minima. Optimum values of the original cost of the solution and coolant – air.


КОРНІЄНКО Б. Я., к.т.н., доцент


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