Self-stable combustion low-cost W-shape flame boiler tiny-oil ignition device

Abstract

The invention relates to a self-stable combustion low-cost W-shape flame boiler tiny-oil ignition device, belongs to the technical field of W-shape flame boilers, and aims at solving the problems that in the prior art, a tiny-oil gun suffers serious abrasion, and the improvement cost for tiny-oil ignition and the cost for equipment maintenance are high. The self-stable combustion low-cost W-shape flame boiler tiny-oil ignition device comprises tiny-oil guns, flame detectors, a high-energy igniter, an ignition cable, and an ignition rod. Each thick powdered coal pipeline and each thin powdered coal pipeline are both provided with a tiny-oil gun. A flame detector is arranged below each tiny-oil gun. Each tiny-oil gun comprises a main oil gun and an auxiliary oil gun. A combustion chamber of each main oil gun is communicated with a combustion chamber of an adjacent main oil gun through a connecting pipe. The combustion camber of any main oil gun serves as a main combustion chamber on which the ignition rod is arranged, and the ignition rod is connected with the high-energy igniter through the ignition cable. According to the self-stable combustion low-cost W-shape flame boiler tiny-oil ignition device, each combustor is only provided with one high-energy igniter, one ignition rod and one ignition cable, and therefore the improvement cost and the equipment maintenance cost are low. The connecting pipe is capable of resisting sharp changes of temperature and staying unchanged, and the abrasion problem of the tiny-oil guns is avoided.

Description

technical field [0001] The invention belongs to the technical field of W-flame boilers, and relates to a combustion device, in particular to a micro-oil ignition device for self-stable combustion and low-cost W-flame boilers. Background technique [0002] Under the background of national energy conservation and emission reduction, most of the power plants using bituminous coal and lean coal have been retrofitted with micro-oil ignition to achieve the purpose of saving oil when starting and stopping the boiler and stable combustion at low load. Due to the low volatile content and high coke content of anthracite, it is difficult to ignite and burn out. In the early stage of micro-oil ignition, the heat release of volatile matter is small, which makes it difficult to retrofit micro-oil ignition to power plants that use anthracite as fuel. W-flame boiler is the main type of furnace for burning anthracite. There are two levels of W-flame boilers in service, 300MW and 600MW, with ...

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Problems solved by technology

[0005] The purpose of the present invention is to propose a self-stable combustion low-cost W-flame boiler micro-oil ignition device to solv

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