The biomass boiler dust collector process treats the flue gas generated by each steel furnace separately. The flue gas generated by the boiler enters the cyclone dust collector through the dust collection duct. At this time, the large particles in the flue gas are separated by the centrifugal force of the cyclone dust collector and discharged by the cyclone dust collector.

Biomass boiler dust collectors have low SO2 and NO2 content. The ash content of biomass briquette is approximately 1.8%. After combustion, most of the ash forms slag, which is removed by the slag removal system, while fly ash is discharged with the flue gas. Biomass boiler dust collectors have low density and fine particle size. This can lead to boiler smoke emissions exceeding the dust emission standard, smoke emission standard, or smoke color emission standard to varying degrees. Therefore, dust removal equipment is necessary for purification.

Biomass boiler dust collectors produce relatively small, hydrophobic particles in flue gas. In the 1970s and 1980s, granite water film dust collectors were a common dust removal method, but these were inefficient and failed to meet flue gas emission standards. Biomass boiler dust collectors are typically used for primary dust removal, primarily collecting larger, heavier dust particles. Their efficiency is generally around 80%. Using cyclone dust collectors alone would have been difficult to achieve emission standards.

Biomass boiler dust collector has become a commonly used dust removal method for biomass boiler flue gas due to its dust removal and stable operation. Its dust removal can handle dust of different particle sizes, achieve the purpose of black smoke and dust recovery, so that all emission indicators meet stable emission requirements.

Biomass boiler dust collector protection measures:

1. Bypass system: When the boiler is under maintenance, the flue gas can be discharged directly from the bypass pipe, so that the boiler can be maintained without stopping.

2. Pre-spraying device: When the boiler is adding auxiliary fuel oil, there will be a lot of oil smoke in the flue gas. Since the oil smoke will be adsorbed on the surface of the bag, it will cause the bag to be blocked and affect the filtration. The pre-spraying device will spray lime powder into the flue gas pipe when the auxiliary fuel oil is sprayed into the boiler to absorb the oil smoke in the flue gas, thereby solving the bag blockage problem.

3. Cold air valve: The cold air valve is equipped with an online temperature measurement system that monitors the flue gas temperature in real time. When the flue gas temperature exceeds the temperature that the dust collector can withstand, the cold air valve will automatically open, and the dust collector will inhale some natural air to cool down and protect the dust collector bags.

4. Boiler dust collector insulation: After high-temperature combustion, the moisture in the fuel turns into water vapor and enters the bag filter together with the flue gas. When the flue gas enters the bag filter, it naturally cools down due to the large temperature difference between the inside and outside. This causes the water vapor in the flue gas to form condensed water that is adsorbed on the surface of the bag. As the wet bags filter, the moisture and dust form mud on the surface of the bags, causing the bags to become clogged and prevent the bags from filtering. After the dust collector is insulated, the flue gas will not cool down after entering the dust collector, and the water vapor will not form condensed water, thus preventing the bag from becoming clogged.