Injection equipment for blast furnace in metallurgical industry

Abstract

The invention discloses injection equipment for a blast furnace in the metallurgical industry. The injection equipment comprises a distributor, wherein the distributor comprises a header pipe and branch pipes, a spherical cavity is arranged in the intersection between the header pipe and the branch pipes, and the included angle between the header pipe and each branch pipe is larger than 90 degrees. The distributor is provided with the two branch pipes, and the two branch pipes are distributed on two sides of the center line of the header pipe respectively. The injection equipment can resolve the problems that because airflow resistance loss of a bend is high, unbalanced branch pipe airflow and uneven coal powder distribution exist in practical production, tempering phenomena are produced, and safety products are not facilitated; the combustion ratio of coal powder is relatively low, blast furnace coal injection is relatively low, production efficiency is reduced, and production cost is improved. According to the technical scheme, the problems of resistance loss and airflow balancing of the branch pipes are fully considered in design of the novel double-gun distributor, and the requirement of the blast furnace for double-gun injection is met. Meanwhile airflow balancing of the branch pipes is facilitated, and the coal powder is uniformly injected.

Description

technical field [0001] The invention belongs to the technical field of manufacturing equipment for blast furnaces in the metallurgical industry, and in particular relates to injection equipment for blast furnaces in the metallurgical industry. Background technique [0002] In the technical field of blast furnace production equipment manufacturing in the metallurgical industry, pulverized coal injection technology is mostly used in smelting furnace equipment such as steelmaking and ironmaking at home and abroad. At present, one of the keys to the application of pulverized coal injection technology in blast furnace equipment is the uniform distribution of pulverized coal injection on the hearth circumference, as well as the convenience and thoroughness of cleaning the powder accumulation in each injection pipe during use. [0003] On the development road of applying pulverized coal injection technology in blast furnace equipment, the single-gun injection technology and equipme...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is that the distributor main pipe and the branch pipe in the prior art injection equipment are designed to be vertical, resulting in a large loss of airflow resistance at the elbow. In actual production, there are branch pipe airflow imbalances, coal powder The problem of uneven distribution, resulting in tempering phenomenon, is not conducive to safe production; the combustion rate of pulverized coal is low, and the blast furnace coal injection is relatively low, which reduces production efficiency and increases production costs and other technical problems, and provides a kind of Injection equipment for blast furnace in metallurgical industry

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