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Information × Registration Number 0218U006702, 0115U000166 , R & D reports Title Development of the theory and technology of pulverized coal injection and powder materials in blast furnaces and other metallurgical units. popup.stage_title Head Kharlashin Petr Stephanovich, Registration Date 23-07-2018 Organization State Higher Educational Institution "Pryazovskyi State Technical University" popup.description2 Development of theory of motion of difficult flows gazoporoshkovogo environments and creation of programmatic complexes allows to shorten time of planning, adjusting and introduction of high-tech in metallurgy in hundred one times. However, at introduction of breach technologies on меткомбінатах of Ukraine, that own a powerful metallurgical complex, there were thorny, difficult abandoned problems of the complete burning of coal, especially at the serve of fuel in high furnaces at an expense about 200 kg / of т the чавуна degree of combustion of coal powder in the tuyere zones of stoves presents ~ 70%. Only for a year on меткомбінатах of Ukraine will be blown in the high furnaces ~ of 7млн of т coal instead of natural gas. There was an urgent necessity of deeper study of conformities to law of stream flow of diphasic stream at tuyere to the zone of stoves. Worked out to the theory of motion and heat exchange of the gas-dispersed turbulent stream in the tuyere hearth of high furnace. This theory of turbulent stream includes the decision of the system of equalizations, such as equalization of unbreak of bearing environment, dispersible admixture, gaseous admixtures, equalization of maintenance of impulse of bearing environment in a projection on a longitudinal axis, impulse of dispersible admixture in projections on longitudinal and radial axes, equalizations of conservation of energy of bearing gas, energy of dispersible admixture, equalization of the state of gas mixture, equalization of transfer of pulsation energy of gas et al. At a decision did tasks take into account intensity of heat exchange, coefficient of kinematics viscidity of gas, coefficient of turbulent diffusion of particles, coefficients of turbulent diffusion and gas heat-conducting, turbulent numbers of Shmidta and Prandtlya, macroscale of turbulence, pulsation of component speeds, time of dynamic relaxation of particle, ейлерів integral spatially is a sentinel scale of turbulence along the trajectory of part, turbulent energy of gas and speed of her dissipation, empiric constants of models, intensity of heat exchange, and also the correlations related to the dispersible phase. For presentation of cross-correlation moments the known supposition is used about gradient character of turbulent transference of mass, warmth and amount of motion in an eider. The number of part was calculated on the known formula of Marshala-Ranza. The system over of equalizations was brought to the form and decided the method. The algorithm of calculation was built as follows. At first decided equalization in an arbitrary layer for х, thus all unknown sizes took from the previous crossing of stream. Then decided equalization with the help of tuning-up to the achievement of necessary exactness for to the iterations for all sought after sizes. After every iteration enumerated radial speed of gas and particles of powder. Influence of diameter of particles, concentration of fuel, form of particles is set on distribution of transversal and longitudinal speed of gas and particles and also temperature of powder on a different removal from the cut of fuel sprayer. Thus, first for a tuyere hearth a two-dimensional model is used, where the general system of equalizations is decided for свобідної diphasic turbulent at the serve of technological powders in a tuyere zone.5481 Product Description popup.authors Будаев А.М. Діденчук Данило Володимирович Заярная Т.І. Калінчак В.В. Кохан Петро Сергійович Куземко Руслан Дмитрович Михайский М.С. Сінельніков Віктор Олегович Тітікова Анастасія Віталіївна Фабричний О.О. Харлашин Петро Степанович Хлестова Ольга Анатоліївна Черненко О.С. Чиж В.В. Шаламов Юрій Микитович popup.nrat_date 2020-04-02 Close