There are several reasons for the combustion of dust bags in boiler dust collectors

There are several reasons for the combustion of dust removal bags in boiler dust collectors. Check the material of the dust removal bags used to see if it is due to improper bag selection, low temperature burning, insufficient oil dust injection pressure, and the application of coal economizers and cooling systems.

Why does the dust bag burn in the boiler dust collector

1. Check the material of the dust removal bag used to see if it was burned due to improper bag selection and low temperature? When selecting a bag filter for a boiler bag dust collector, it is generally necessary to choose a dust removal filter bag with high temperature resistance, taking into account the ability of the filter bag to withstand temperature increases caused by the system. For example, when using a filter bag with a temperature resistance of over 260 degrees Celsius, it is only suitable for flue gas below 200 degrees Celsius.

2. The spraying pressure of oily dust is insufficient. Check the main components of the dust removal flue gas and whether there are oily particles present, as they will adhere to the surface of the dust removal bag. When they adhere to a certain degree, it will not only affect the dust removal effect, but also ignite the filter bag when the high-temperature flue gas passes through. In this case, the "pre coating ash" process can be considered to reduce its adhesion ability.

3. When the exhaust temperature of the boiler is too high, adjust the size of the air flow entering the dust collector, or use a re inlet air duct with a thermocouple, or install a cold air valve, etc. If the temperature is too high, open the cold air valve to reduce the flue gas temperature, which should lower the flue gas temperature and reduce the chance of burning the bag. Generally, the flue gas temperature is normal when it is not more than 180 degrees. When it exceeds 180 degrees, a coal economizer and cooling system should be installed.