Swirl less-gas pulverized coal burner

Abstract

The invention discloses a swirl less-gas pulverized coal burner. The swirl less-gas pulverized coal burner comprises a fuel gas burner, a pre-burning chamber, a burning chamber, an inner secondary air device, an outer secondary air device, and an air bellow. The axis of the burning chamber, the axis of the pre-burning chamber, the axis of the inner secondary air device, the axis of the outer secondary air device, and the axis of the air bellow are all superposed. The inner secondary air device is arranged outside the burning chamber; the outer secondary air device is arranged outside the inner secondary air device; all the previous three devices are arranged inside the air bellow. In the swirl less-gas pulverized coal burner, the pulverized coal can be ignited by consuming little gas without consuming fuel oil. The swirl less-gas pulverized coal burner is simple in structure and convenient in maintenance. The gas is easily ignited and is of a high burning temperature for igniting various types of coals, accordingly the swirl less-gas pulverized coal burner has a wider application range on the coals. The fractional combustion can be achieved with a low nitric oxide production.

Description

technical field [0001] The invention discloses a low-gas combustion device for promoting the rotary combustion of pulverized coal, in particular to a burner capable of realizing micro-gas ignition and low-nitrogen combustion. Background technique [0002] my country is a big country that consumes and imports oil. The state encourages the promotion of fuel-saving technology and the technology of replacing oil with coal. and alternative fuel oil target is 38 million tons. Reducing fuel consumption has become a top priority. In recent years, the power industry has made a lot of technological improvements to the conventional ignition methods of power plant boilers, such as plasma ignition, micro-oil ignition and other technologies have emerged. However, due to various reasons, each of the above technologies has certain limitations in practical application. [0003] Such as plasma burner: poor coal applicability, poor combustion stability, low burnout rate, short service life, ...

AI Technical Summary

Problems solved by technology

However, due to various reasons, the above-mentioned technologies have certain limitations in practical application.

[0003] Such as plasma burner: poor coal applicability, poor combustion stability, low burnout rate, short service life, complex system, high maintenance cost

[0004] Such as micro-oil burner: the output of the burner is small, the ignition energy is low, and the applicability of coal is poor

[0005] To sum up, the above technology is suitable for large-capacity and high-parameter boilers in the electric power industry, and there are great limitations in the use of industrial boilers

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