Work

Purpose. Improvement of thermal and gas dynamic of "dry" and the peripheral zones of the furnace through the effective use of heat and reduction potential of the gas flow and its distribution, taking into account the value of external heat loss profile of the mine and construction of the cooling properties of charge materials, energy and cost efficiency furnace. Patterns refined and quantitative assessment of the impact parameters of coal gas, of mines, construction of the cooling system, pressure blast furnace gas, and fractional void volume size piece of the charge on the development of heat, gas-dynamic processes in the mine and the external heat loss is given, thereby the prediction of technical and economic indices of blast-furnace is refined. A method of defining the boundaries of the peripheral zone of heat power parameters of its operation is implemented, its impact on thermal and repair of gas flow in the furnace is developed. Influence of residual thickness of the lining, costs and temperature coal gas fractional void volume and size piece of the charge, temperature and water flow in the cooling system at temperatures in the peripheral zone and the possibility of there phenomena inversion temperature field, which causes distortion of the profile of the mine and the formation of cooling is studied. Warm-gas-dynamic regime zaduvky that provides favorable conditions for heating the charge material in height and radius of the furnace is developed and implemented on BF № 9 "AMKR". Subsystem "Control of external heat loss and the consumption of coke in its coverage" by which the effectiveness of selected thermal and gas-dynamic mode tracking disorders in the oven is evaluated is developed and implemented in the control system BF № 9 PSC "AMKR". The technology of joint injection into the furnace № 1 PAT "AMK" pulverized coal, natural gas and oxygen, which provides the increase in the intensity and efficiency of smelting furnace reliability of 3000 m3 is implemented. The scientific novelty. The criterion and the method of determining the boundaries of the peripheral zone, subject to thermal representations of the thermal boundary layer, which allowed to clarify the laws of heat transfer processes and their impact on technical and economic indices of blast-furnace. Patterns specified and quantitative assessment of the impact of thermal gas-dynamic "dry" area on the parameters characterizing the thermal performance of the blast furnace as a whole, using the proposed method, which fully takes into account the parameters of gas flow, its distribution, status protections, thermal cooling system performance and properties of charge materials is given. The conformity of the inversion temperature field in the Wall area furnace and specifies the factors that lead to distortion of the profile of the mine and the deterioration of technical and economic indices of the furnace. Advanced thermal engineering basics and a method of sharing information about the external heat losses in the cooling system, and the jacket temperature furnace lining for the detection and prevention of disorders of the blast furnace in the early stages for 2 - 8 hours is developed. The practical significance of the results. On the basis of complex gas-dynamic and thermal heat energy models thermal gas-dynamic regime blowing blast furnace №9 "AMKR" using blast enriched hot nitrogen was reasonably implemented. Subsystem "Control of external heat loss and the consumption of coke in their coverage" by which it’s possible to evaluate the effectiveness of selected thermal and gas-dynamic mode tracking disorders in the oven is developed and implemented in the control system BF № 9 PSC "AMKR". Use of the temperature forecast and heat of the mine and its peripheral areas within CAM furnace allows to control wear profile of the mine, to make scientifically-informed decisions, using the counselor, to change the thermal gas-dynamic regime of the furnace to reduce the specific consumption of coke to cover external heat loss and prevent disorders thermal gas-dynamic regime of the furnace. The method of analysis of the peripheral zone of the blast furnace allows to generate recommendations for improving the design of fences, the choice of lining for different areas of the mine, coordination of gas dynamic and heat of the bottom and top of the furnace. The technology of joint injection into the furnace № 1 DP PJSC "AMK" pulverized coal, natural gas and oxygen, which will provide an increase of the intensity and efficiency of smelting furnace reliability of 3000 m3 is implemented together with technologists of JSC "AMC".