Three-dimensional vortex burner

Abstract

The invention relates to a three-dimensional vortex burner and belongs to the technical field of thermal power engineering. The three-dimensional vortex burner is primarily characterized by being provided with an air inlet and a coal gas inlet entering tangentially, a catenary convoluted rectifying room, a primary air nozzle and a secondary air nozzle which are arranged in layers and different indirection and a diversion trench reinforcing throat, so that air is supplied to form conical spiral vortexes to inject the coal gas to fit an extremely low coal gas pressure and staged burning and thick and light burning are achieved to reduce emission of nitric oxide. The three-dimensional vortex burner is full in burning and small in resistance loss, and is particularly suitable for various industrial kilns which are high in power, low in coal gas calorific value, low in coal gas pressure, great in pressure fluctuation and high in demand on emission of nitric oxide. Energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention relates to the technical field of thermal energy engineering, in particular to a device for converting gaseous fuel into high-temperature flue gas. Background technique [0002] A burner is a device that converts chemical energy into thermal energy through the chemical reaction of burning fuel. It is widely used in smelting furnaces, hot blast furnaces, heat treatment furnaces, heating furnaces, flue gas furnaces, boilers and other heat-related industries. [0003] Existing technologies and current status: Industrial gas burners have various structural forms such as sleeve burners, swirl burners, and rotary cutting burners. The disadvantages of the above-mentioned burners are: a. The layout is unreasonable and the airflow organization effect is poor, resulting in uneven mixing of air and gas, insufficient combustion, large excess coefficient of air, and CO, O in the flue gas 2 , high NOx content, low combustion temperature, poor heat uti...

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Problems solved by technology

[0003] Existing technologies and current status: Industrial gas burners have various structural forms such as sleeve burners, swirl burners, and rotary cutting burners. The disadvantages of the above-mentioned burners are: a. The layout is unreasonable and the airflow organization effect is poor, resulting in uneven mixing of air and gas, insufficient combustion, large excess coefficient of air, and CO, O in the flue gas 2 , high NOx content, low combustion temperature, poor heat utilization rate, b combustion produces a large amount of NOx, polluting the environment; c burner resistance loss is large, and requires high and stable gas pressure to work normally; d burner structure is unreasonable , the air inlet, gas inlet, and gas nozzle bricks are easy to fall off and damage during operation; the structure of the e burner is complex, the design of the brick type is difficult, and the manufacturing quality is difficult to guarantee

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