Distribution matrix designing method for increasing utilizing rate of large blast furnace gas

Abstract

The invention relates to the field of blast furnaces, in particular to a distribution matrix designing method for increasing the utilizing rate of large blast furnace gas. According to the distribution mode, in the blast furnace material loading process, by changing the tilting angle of a chute, the distribution ring number and the opening degree of a throttle valve, distribution of ore and coke in a surface is changed; and distribution of the coal gas at the edge and in the center is controlled, a coal gas flow is made to be reasonably distributed, the furnace condition is stabilized, the utilization rate of carbon monoxide is increased, and fuel consumption is reduced. Through the distribution mode adopting a platform with the proper width and the funnel depth, the utilizing rate of theblast furnace carbon monoxide is greatly increased while meeting blast furnace performance, the fuel ratio is remarkably decreased, and the production cost is reduced; and therefore, the problems of ore coke drop point positions and the ore coke numbers of all the positions are solved, the reasonably distributed and stable coal gas flow is achieved, and the furnace condition is stably performed.

Description

technical field [0001] The invention relates to the field of blast furnaces, in particular to a material distribution matrix design method for improving the gas utilization rate of large blast furnaces. Background technique [0002] Large-scale new distribution matrix: during the charging process of the blast furnace, by changing the tilting angle of the chute, the number of distribution rings and the opening of the throttle valve, the distribution of ore and coke in the furnace can be changed, and the distribution of edge and center gas can be controlled, so that The gas flow is reasonably distributed to achieve stable furnace conditions, improve the utilization rate of carbon monoxide, and reduce fuel consumption. [0003] Which material distribution matrix to use in the blast furnace is mainly determined by factors such as the production status of the blast furnace itself and the conditions of raw materials and fuels. At present, affected by factors such as changes in th...

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Problems solved by technology

At present, due to factors such as changes in the quality of raw materials and fuels, it is difficult to ensure a high carbon monoxide utilization rate of the blast furnace during the production process of the blast furnace while meeting the requirements of the blast furnace, resulting in an increase in the high fuel consumption cost of the blast furnace

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