Визначення оптимальних режимів процесу електростатичного золоочищення

• Дата: 2012
• Автор: Yatsenko V.P.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: General Energy Institute of the National Academy of Sciences of Ukraine 2012
• Теми: зола; електрофільтр; визначальний критерій; факторний простір; оптимізація.
• Онлайн доступ: https://systemre.org/index.php/journal/article/view/470
• Назва журналу: System Research in Energy

The electrostatic cleaning of flue gases is the basic method of the catching of ash particles at thermal power plants. Such a method is quite universal and suitable for numerous disperse systems over a wide range of particle sizes. About 62% of the Ukrainian pulverized-coal fired boilers are equipped with electrostatic precipitators. The search for the optimal conditions for the process of cleaning of flue gases of power-generating boilers from suspended particles (fly ash, unburned carbon, etc.) is an important ecological problem.The optimal conditions of any process can be determined by means of experimental or analytical investigations. However, in many cases, it is quite difficult to perform an adequate analytical investigation of a technical object, and the full-scale experiments require considerable expenditures of time and material resources. Hence, it is much easier to solve optimization problems by the methods of mathematical planning of extreme experiments.With the use of these methods, we have formed the determinative criteria of the electrostatic cleaning of flue gases of thermal power plants from fly ash, established their limiting values, constructed a plan of extreme experiments, obtained the regression equation describing the objective function, and performed experiments by the method of steep ascent.It is established that, for the given process, it is impossible to specify a single point in the factorial space, where the optimal efficiency of cleaning is reached. In this connection, we determined the ranges of the values of criteria, where the maximal particle sedimentation coefficients for the collecting electrode of an electrostatic precipitator are ensured. These results allow us to propose the optimal conditions of the electrostatic cleaning of flue gases from fly ash.