Method and device thereof for stably burning various fuel gases with high-low calorific values

Abstract

The invention relates to a method for stably burning various fuel gases with high-low calorific values, wherein the fuel gases are divided into four independent fuel gas channels according to high, medium and low calorific values and are arranged in a concentric mode, the nozzle orifices of the fuel gas channels are arranged in layers at intervals at the outlet of a burning device, and air ducts are arranged between the fuel gas channels and blow out air in rotational flow and direct flow modes respectively to cooperate with fuel gas jet flows to achieve highly stable burning; and multi-channel, independent type and multi-hole crossing jet flows are formed to achieve the highly stable burning of various fuel gasses with high, medium and low calorific values. The method solves the problemsof reasonably and effectively utilizing various byproduct gases generated in the smelting processes by iron and steel enterprises, and the method achieves the interchanging highly stable burning of various gasses with high, medium and low calorific values by using the principle of various orifice resistances and flow rate difference characteristics.

Description

technical field [0001] The invention relates to the technical field of coal gas combustion, in particular to methods and devices for stable combustion of various types of high and low calorific value gases. Background technique [0002] At present, iron and steel enterprises produce a variety of by-products during the smelting process, including high calorific value gas, such as coke oven gas, medium calorific value gas, such as converter gas, and low calorific value gas, such as blast furnace gas. With the continuous expansion of iron and steel scale, the production of these various types of high and low calorific value gas is also increasing, and its characteristic is that the production and gas calorific value vary with the smelting process and technology. [0003] At present, it is mainly used as fuel for industrial boilers, heating furnaces and other equipment, and it is burned and vented under special circumstances. When these smelting by-products are used as industri...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method and device for stable combustion of various types of high and low calorific value gas, to solve the problem of reasonable and effective utilization of various by-product gas produced in the iron and steel industry during the smelting process, and to utilize the differences in resistance and flow velocity of multiple types of orifices The principle of characteristics realizes high, medium and low calorific value and various types of gas interchange, efficient and stable combustion

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