Oxygen-enriched igniting and firing stabilizer without oil

Abstract

There is disclosed an oxygen-enriched oil-free ignition smooth combustion device, which consists of a ignition smooth combustion nozzle or smooth combustion recirculation region oxygen-enriched nozzle of the ignition smooth combustion nozzle and the adjacent upper or lower deck coal nozzle and a connection control pipeline.

Description

technical field [0001] The invention relates to an ignition and stable combustion device for igniting and burning pulverized coal in the energy utilization process of power station boilers, industrial furnaces, etc. Oil ignition and stable combustion device. Background technique [0002] At present, there are two technical methods that can be used as the ignition burner and the main burner at the same time: plasma oil-free ignition and stable combustion, and high-temperature air oil-free ignition and stable combustion. [0003] Plasma oil-free ignition and stable combustion device is composed of ignition combustion nozzle, cathode, anode, water cooling system, high-power power supply, etc. A high-power power supply of about 150-400KW is used to ignite a plasma arc with a temperature of tens of thousands of degrees, thereby realizing heating of pulverized coal, reliable ignition and stable combustion. It has many characteristics such as fast ignition, stability and reliabil...

AI Technical Summary

Problems solved by technology

Its shortcoming is that, as a result of high power and tens of thousands of degrees of high temperature, even if water cooling measures are taken, the cathode and anode will be severely burned, the life of the tungsten cathode is only tens of hours, and the life of the anode is only hundreds of hours, and the cathode and anode need to be replaced frequently. It is quite troublesome, once it fails, it will affect the safe and reliable operation of power station boilers and industrial furnaces, and consume more strategic materials such as precious tungsten

Its disadvantage is that the temperature of air heating itself is limited by the allowable wall temperature of the metal, and the heat capacity of the air itself is low. The worse the coal quality and the higher the water content, the greater the heat capacity, and the high-temperature air may not be able to dissipate the coal powder at any time. Heating to the ignition point and igniting it, the probability of ignition failure is high

The application is greatly affected by coal quality, and the adaptability of coal types is poor

Images