Blast furnace tuyere raceway test simulation technology and method

Abstract

The invention discloses a blast furnace tuyere raceway test simulation technology and method, and relates to the technical field of ferrous metallurgy. The blast furnace tuyere raceway test simulationtechnology and method comprise the following step that S1, using gas is added into a tube furnace of a porous ceramic tube for operation through a flowmeter and valve control, wherein the using gas is mixed gas of air and one or more of steam, hydrogen or natural gas. The blast furnace tuyere raceway test simulation technology and method are a test detection technology and method capable of detecting the pulverized coal combustion rate and the tuyere raceway thermal state, simulation parameters are truly provided for blast furnace production, the conveying characteristics and the blowing characteristics of different fuels are detected, the blast furnace tuyere raceway test simulation technology and method are closer to the technical characteristics of blast furnace production, the fuel blowing characteristics and the combustion characteristics under the conditions of different fuels, different oxygen enrichment rates and different air humidity and the change condition of the tuyere raceway are simulated, and oxygen enrichment, pressure and air temperature control, fuel matching and the like of hot air are better guided.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular to a test simulation technology and method for a blast furnace tuyere swirl zone. Background technique [0002] Blast furnace coal injection is to directly inject pulverized anthracite or bituminous coal or a mixture of the two into the furnace from the tuyeres of the blast furnace to replace coke and provide heat and reducing agents, thereby reducing coke ratio and reducing pig iron. cost. By increasing the coal injection ratio to increase the oxygen enrichment, the production of blast furnace pig iron is indirectly increased. In 1963, my country began the experiment, research and development of coal injection technology, in 1964, it carried out industrial experiments, and in 1965, it was formally produced. In 1990, Anshan Iron and Steel Co., Ltd. succeeded in the experiment of injecting bituminous coal, which ended the history of injecting single anthracite in ...

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Problems solved by technology

[0009] Aiming at the deficiencies of the prior art, the present invention provides a test simulation technology and method for the tuyere swirl area of ​​a blast furnace, which solves the problem that the detection device in the prior art only detects the combustibility, and there is no technical means for detecting the size and shape of the tuyere swirl area. It is difficult to comprehensively consider the pyrolysis volatilization of fuel particle volatiles, water evaporation, combustion of particles and oxygen and other gases, chemical reactions between gases, and the thermal radiation between gases and particles, and between particles

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