Pulverized coal furnace natural gas igniter

Abstract

The invention relates to the field of ignition of heat supply devices using pulverized coal as combustion medium, in particular to a pulverized coal furnace natural gas igniter which can be ignited remotely. The pulverized coal furnace natural gas igniter comprises a hand-held protecting tube, a front fixing end, a fuel gas conveying unit, a direct-current pulse circuit unit and a rear fixing end. A threaded gas inlet hole is formed in the hand-held protecting tube. An air hole is formed in the front fixing end. Multi-stage insulating ceramic tubes for fixing and insulating are disposed outside each power supply wiring terminal from an igniting end to the end connected with wiring nuts. The front fixing end is slidably connected with both the first-stage insulating ceramic tube and the hand-held protecting tube. The rear fixing end is connected with the last-stage insulating ceramic tube in a threaded manner through tightening screws. The hand-held protecting tube is connected with the rear fixing end in a threaded manner. The pulverized coal furnace natural gas igniter has the advantages that the pulverized coal furnace natural gas igniter is high in capability of continuous combustion and capable of remote and long-term ignition, application cost is lowered, no pollutant gases are generated after fuel is combusted, and environments are protected.

Description

technical field [0001] The invention relates to the field of ignition of heating equipment using coal powder as the combustion medium, in particular to a natural gas pilot burner for pulverized coal furnace capable of remote ignition. Background technique [0002] Most of the existing heating equipment using coal powder as the combustion medium uses heavy oil as the ignition fuel. Not only is the cost of ignition with heavy oil high, but also the structure of the ignition equipment using heavy oil as fuel is complicated, and the cost of use and maintenance is high; In the heating equipment with powder as the combustion medium, the combustion process has the characteristics of strong wind, large oxygen supply, sufficient coal powder combustion, less residue, rapid combustion, and large heat, which requires that the ignition source must have a long The function of long-distance ignition, and natural gas is used as the ignition fuel. With the rise of oil prices, the cost of usi...

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Problems solved by technology

[0002] Most of the existing heating equipment using coal powder as the combustion medium uses heavy oil as the ignition fuel. Not only is the cost of ignition with heavy oil high, but also the structure of the ignition equipment using heavy oil as fuel is complicated, and the cost of use and maintenance is high; In the heating equipment with powder as the combustion medium, the combustion process has the characteristics of strong wind, large oxygen supply, sufficient coal powder combustion, less residue, rapid combustion, and large heat, which requires that the ignition source must have a long The function of long-distance ignition, and natural gas is used as the ignition fuel. With the rise of oil prices, the cost of using fuel oil for ignition will increase. Ignition and stable combustion are necessary. As a pilot fuel, natural gas can not only meet long-distance long-distance ignition, but also has the advantages of low cost and environmental protection

[0003] Some ignition equipment using natural gas as the ignition fuel also appeared in the existing pulverized coal furnace, but the ignition equipment has more or less shortcomings of one kind or another, such as the poor insulation protection effect of the ignition unit, which is easy to cause ignition Equipment damage, combustion-supporting gas does not enter smoothly, resulting in poor ignition or stable combustion effects, etc., which limit the use of natural gas pilot burners in pulverized coal furnaces

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