Gas mixed burner with three-way

Abstract

The invention is a three-gas mixed burner. And blast-furnace gas circuit, combustion supporting air circuit and coke-oven gas circuit, which are formed by isolation of furnace walls and inner walls, are arranged at the bottom of the burner, flow guide columns are in the center of the circuit; furnace walls and inner isolating walls compose blast-furnace gas channel, combustion supporting air channel and coke-oven gas channel, which are radiation in shape and staggered mutually, the blast-furnace gas channel communicates with the blast-furnace gas circuit, the combustion supporting air channel communicates with the combustion support air circuit, the coke-oven gas channel communicates with the coke-oven gas circuit, three channels at the upper part of the furnace wall are provided with annular channels communicating with them, and the annular channels are equipped with communicating sector jet holes. The advantages are full combustion, high thermal value, low CO content, low cost.

Description

1. Technical field [0001] The invention relates to a three-gas mixing burner for a blast furnace hot blast stove for iron and steel smelting. 2. Background technology [0002] With the sustained and rapid development of my country's economy, my country's steel production has made great progress, but as far as the current situation is concerned, the quality of my country's steel production is far inferior to that of developed countries. The improvement of the air temperature of the steelmaking blast furnace is determined by the ceramic burner. Therefore, in order to increase the furnace temperature, the ceramic burner must be innovated. However, most of the burners currently used are mixing devices of two gases. Due to the unreasonable structure, low furnace temperature and poor quality of steelmaking, the burners cannot meet the needs of high-quality steel in the rapid economic development. Therefore, the innovation of burners for blast furnaces is imperative. 3. Contents of...

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Problems solved by technology

[0003] In view of the above situation and the actual needs of smelting high-quality steel, the purpose of this invention is to provide a three-gas mixed burner for blast furnace hot blast stove, which can effectively increase the furnace temperature and solve the problem of poor steel quality caused by low furnace temperature in iron and steel smelting. The technical solution to the problem is that the lower part of the burner is separated by the furnace wall and the inner wall to form a blast furnace gas ring, a combustion-supporting air ring and a coke oven gas ring. There is a guide column in the center of the ring, and the furnace wall The blast furnace gas channel, the combustion air channel and the coke oven gas channel are formed radially between the inner partition wall, and the channels are arranged in a staggered manner. The channel communicates with the coke oven gas ring channel, the upper part of the furnace wall is equipped with an annular channel connected with the three channels, and the annular channel is equipped with connected fan-shaped spray holes. The structure of the invention is unique, novel and fully combustible. , high calorific value, uniform gas mixing, low CO content, fast heating speed of the hot blast furnace, high temperature of the air sent into the blast furnace, good quality (high quality) steel produced, low cost, and greatly reduced environmental pollution. Integrating energy saving and environmental protection, it has broad development and application prospects

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