Principle of ignition rod for biomass boiler


Release time:

2023-04-11

The principle of the ignition rod of the biomass boiler is very simple, that is, to intercept the sparks in the flue gas and prevent it from entering the bag filter, so as to prevent the bag filter from being burned. The flue gas generated during boiler combustion and the flue gas generated during normal combustion are treated by a bag filter. Flue gas dust from the dust removal pipe into the cyclone dust collector or (flame arrester). At this time, the large particles in the dust are separated under the centrifugal force of the cyclone dust collector. Large particle dust settles through the cyclone dust collector, and fine particle dust is discharged from the pipeline into the bag filter. The dust attached to the surface of the cloth bag is filtered by the high temperature cloth bag, settled by pulse jet, concentrated in the dust hopper of the dust collector, and recovered or utilized by the automatic cleaning controller. The clean air treated by the bag filter is discharged into the atmosphere through the chimney by the fan. Boiler dust containing flue gas by bag filter treatment, can reduce the pollution of soot on the surrounding environment, to achieve the purpose of clean production, then, the following together to understand the principle of biomass boiler ignition rod!

The basic treatment process of biomass boiler flue gas is: the flue gas dust generated by boiler combustion first enters the cyclone dust collector or flame arrestor through the dust suction pipe. At this time, the large particles in the flue gas are separated under the centrifugal force of the cyclone dust collector, the large particles are discharged from the cyclone dust collector, the unburned sparks in the flue gas are captured by the flame arrestor, and the fine particles enter the bag filter. After the dust attached to the surface of the bag is filtered by the dust bag, it is concentrated in the ash hopper of the dust collector by pulse soot blowing, and is recycled or utilized by the emission controller. The flue gas treated by the bag filter is discharged into the atmosphere through the chimney by the fan.

Material boiler bag dust collector particle fuel is currently mainly processed from sweet sorghum stalks, corn stalks, cotton stalks, wheat stalks or rice stalks, branches, reeds and other stalks as raw materials to replace biomass energy. After the raw materials are burned, the powder is very fine and non-corrosive. The S02 and NOz components in industrial biomass boiler dust are low, and the ash content of biomass briquette fuel is about 1.8%. Most of the ash is formed after combustion, which is removed by the slag removal system, and the fly ash is discharged with the flue gas. It has low density and fine grain size. Features. Therefore, the spark is lighter when burning, and it is not easy to burn completely. It is easy to enter the pipeline with the suction of the fan, causing the bag to burn and damage. Therefore, the pipeline between the biomass boiler and the dust collector needs to install a flame arrester. The function of the flame arrester is to prevent the open flame or normal light from entering the gas system and causing combustion and explosion accidents. Its working principle is: when the flame passes through the narrow pores, due to the sudden increase in heat loss, the combustion cannot continue and the flame is extinguished.

Since the ignition rod of the biomass boiler is composed of many small channels and gaps, when the flame enters these small channels, many small flame flows will be formed. At this time, the heat transfer area of the channel is very large, and the flame cools down through the heat exchange of the channel wall. When the temperature drops to a certain temperature, the flame will naturally extinguish. According to the experiment, whenever the thermal conductivity of the flame arrester material is increased to 460 times, the extinction diameter of the flame only changes by 216, which mainly indicates that the material is secondary. Viewed from the side, heat transfer is one of the reasons for the flame extinguishing, but not the main reason. The main structure of biomass boiler ignition rod:

1. Upper box body: including flip cover (or fastening cover) and air outlet.

2. Middle box: including perforated plate, access door, ladder, etc.

3. Lower box: ash unloading valve, etc.

4. Injection system: including pulse controller, electromagnetic pulse valve, injection pipe and air bag.

Installation of ignition rod for biomass boiler

1. The ground foundation needs to be leveled and fixed with cement

2. Put down the box first, then stack the upper box on it, find a fixing point, align it with the screw hole and fix it.

3. The pipe inlet is connected with the ash hopper and is the dust inlet.

4. The outlet of the upper box is connected with the inlet of the bag filter by a pipeline.

5. The signal line of the pulse valve is connected to the power distribution cabinet (we will provide the installation diagram)

6. The ladder guardrail is welded on the flame arrester.

7. After all installations are completed, you can start the machine and use it.

The above is the principle of biomass boiler ignition rod, if you need to know more knowledge, you can contact us at any time!