EXPERIMANTAL STUDY OF TWO-CAMERA ELECTRIC ARC PLASMATRON OF LINEAR SCHEME AND CHOISE OF ITS OPTIMAL TECHNOLOGICAL PARAMETERS
Keywords:
plasma-fuel systems, plasma torch, current-voltage characteristic, sustainable combustion, electric dischargeAbstract
This paper presents the results of experimental studies dual-chamber DC arc plasma torch of linear circuit in bench and industrial conditions. This arc plasma torch is designed for plasma ignition of pulverized coal flame, its stabilization and fuel oil free start up boilers of thermal power plants. Power of the plasma torch according to the process parameters can vary from 80 to 230 kW. The plasma torch is characterized by stable high power air plasma torch. The measured current-voltage characteristics of the plasma torch allowed determining the area of sustainable arc 350-475 A. The parameters of the plasma torch at its rated capacity of 200 kW and a plasma gas flow of 1000 l/min are achieved at currents less than 450 A. Application of the azimuthal and axial scanning cathode spot plasma torch was applied. It can increase the life of the cathode up to 200 hours at a resource of the massive anode more than 500 hours.
References
(1) Messerle V.E., Karpenko E.I., Ustimenko A.B., Lavrichshev O.A. Plasma preparation of coal to combustion in power boilers // Fuel Processing Technology, 2013. V. 107. P. 93–98. https://doi.org/10.1016/j.fuproc.2012.07.001
(2) Messerle V.Е., Ustimenko А.B. Plasma technologies for fuel сonversion // High Temperature Material Processes. 2012. V.16 (2). P. 97– 107.
(3) Мессерле В.Е., Карпенко Е.И., Устименко А.Б., Тютебаев С.С., Карпенко Ю.Е., Еремина Т.В. Моделирование и испытания плазменно-топливных систем на котле БКЗ-420 Алматинской ТЭЦ-2 // Вестник Восточно-Сибирского государственного университета технологий и управления, Научный журнал. 2012. № 2 (37). С. 21-27.
(4) Перегудов В.С., Урюков Б.А. Область устойчивой работы плазмотрона большой длины // Изв. СО АН СССР. – Сер. техн. наук. 1980. Вып. 1. № 3. С. 71-73.
