Low NOx cyclone micro-oil coal powder burner

Abstract

Aiming at the disadvantages that the prior cyclone pulverized coal burner can not effectively reduce the emission amount of NOx, the invention provides a low-NOx cyclone micro-oil pulverized coal burner which reduces mass NOx in the igniting and burning process. The low-NOx cyclone micro-oil pulverized coal burner comprises a burner body and a primary pulverized coal burning chamber arranged inside the burner body; an inlet of the burner body is connected with an elbow piece; an inlet of the primary pulverized coal burning chamber is provided with an oil burning chamber which is inserted into the primary pulverized coal burning chamber from the elbow piece; the burner body is provided inside with a pulverized coal concentrated ring; an outlet of the burner body is provided with a secondary wind port inside the cyclone and a secondary wind port outside the cyclone; an outlet of the oil burning chamber and an inlet of the primary pulverized coal burning chamber are provided with a pulverized coal distributor. The burner can use a small quantity of fuel to ignite the pulverized coal in the burning chamber; the pulverized coal in the burning chamber has large concentration in order that the burning is in reducing atmosphere and mass NOx is deacidized, thereby reducing the emission of pollutant.

Description

A low NOx swirling micro-oil pulverized coal burner technical field The invention belongs to a pulverized coal burner, in particular to a pulverized coal burner with low NOx swirling flow and fine oil. Background technique In the pulverized coal boiler, the thick-lean combustion technology is often used, that is, the pulverized coal flow into the furnace is inertially separated, divided into two streams of thick and thin, and then sent to the furnace respectively. It has been significantly improved, and its ignition characteristics have been significantly improved. However, when the pulverized coal is burned in the burner, it will produce atmospheric pollutants NOx, which will cause serious harm to environmental pollution and human health, especially for poor-quality combustion. For difficult-to-combust fuels such as bituminous coal and lean coal, it is more difficult to meet the requirements of low NOx emissions. In the existing swirl pulverized coal burner, an internal ...

AI Technical Summary

Problems solved by technology

In order to solve the defects of the prior art, the present invention provides a low-NOx swirling micro-oil pulverized coal burner in which a large amount of NOx is reduced during ignition and combustion

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