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Carew Jinding burning stove relative to internal combustion and external combustion hot stove has a large heat storage area, a symmetric structure, high strength, high thermal efficiency, supply air temperature is high, to generate low maintenance costs and long service life. Relative to the other top burning stove, it uses a multi-to burner ring ceramic burner, gas and combustion air is fully mixed and swirl combustion, the complete elimination of combustion pulsation is an important development direction of the top burning stove a. Core top burning stove is a ceramic burner, at home and abroad Kalugin hot stove burner and also the lack of systematic and comprehensive analysis of the flow structure and combustion characteristics of the burner optimization its structure, and improve the thermal efficiency has important significance. In this paper, the establishment of a blast furnace Carew Jinding burning stove burners with prototype similar than 1:10 burner the empty gas flow, mixing and combustion of mathematics, physics simulation model with FLUENT software, at a given speed inlet boundary conditions, the choice of the RSM turbulence model (Reynolds stress model) to simulate turbulent flow within the burner, the choice of the the component transmission model simulation under cold flow structure, empty gas flow mixing characteristics of hot stove burner, burning Room different cross-section of the flow field characteristics and component uniformity, the empty the gas vents export the flow characteristics and regenerator checker bricks on the outlet flow. Optional cold modeling based on the PDF combustion model and P1 radiation model, given empty gas inlet flow conditions, simulate the thermal state of the combustion process of the burner hollow gas. Research combustion process flue gas velocity distribution, temperature distribution and composition distribution characteristic, and calculate the empty gas combustion temperature of the flue gas outlet and the combustion efficiency. Cold numerical calculation results show that: the annular ceramic burner of the multi-layer multi-orifice structure to ensure empty Gas stream sufficiently mixed and forming a swirl, swirl the air flow will be generated in the combustion chamber center and reflux, local areas to generate a small vortex, thereby effectively shorten the length of the flame. Flow the size of the the combustor different cross-section and the combustor outlet substantially no effect on flow uniformity. Four vents in the preheating chamber flow uniformity of 90%, the speed of the air vents uniformity relatively better gas vents, can improve overall airflow vents the flow uniformity by optimizing the gas nozzle arrangement. Shao Shao chamber outlet air distribution uneven edge speed, small center airflow speed, maximum speed of 2.5 times the minimum speed, but its uniformity is better than the traditional top burning stove, the uniformity of the average speed of the combustion chamber outlet for 68.74 %, the fuel component concentration uniformity of 71.76%, 74.91% oxygen species concentration uniformity, to consider the adoption of structural design optimization of the hot stove to improve the Regenerator upper airflow distribution. Thermal simulation results show that: the gas burner combustion indoor air for a typical diffusion combustion, coal gas introducing tube, the air tube in the next forming the pre-combustion chamber the air parcel gas swirl flow state, cyclonic combustor and a reflux hindered flame center development, greatly reducing the length of the flame does not impact the regenerator checker bricks, while the pre-combustion chamber a hemispherical dome space is filled with gas, combustion air spout had just started, the empty Gas burner combustion efficiency 95.44% The combustor exit flue gas at an average speed for 6.7135m / s, average temperature of the flue gas for 1534.7K. Finally, the thesis of this subject is summarized, and put forward recommendations for follow-up research and Carew Jinding burning stove burners.
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