There are several reasons why baghouse emissions exceed the standard, and here are some of the common ones:
First of all, the material and processing quality of the dust collector bag are important factors affecting emissions. If the material of the bag is not resistant to high temperature, corrosion or poor processing quality, it will cause the bag to be damaged or the filtration efficiency will be reduced, which will cause the discharge to exceed the standard.
Secondly, the design and configuration of the dust collector is also a key factor. If the design of the dust collector is not reasonable or the configuration is improper, such as the filtration area is too small, the filtration air speed is too high, the number of bags is insufficient, etc., it will lead to excessive emissions.
In addition, the operation and maintenance of the dust collector is also an important link. If the operating parameters of the dust collector are not set properly or the maintenance is not in place, such as the cleaning system does not work or the ash is overcleaned, the bag is not cleaned or replaced in time, etc., it will lead to excessive emissions.
Finally, the nature of the dust is also a factor that cannot be ignored. If the particle size of the dust is small, the specific surface area is large, the adhesion is strong or the humidity is high, it will cause the bag to clog or the resistance will increase, so that the emission will exceed the standard.
In order to solve the problem of excessive emissions of bag filters, it is necessary to start from many aspects, including selecting the appropriate bag material and processing quality, optimizing the design and configuration of the dust collector, reasonably setting the operating parameters and maintaining the dust collector, and taking corresponding measures for different dust properties. Only in this way can we ensure that the emission of the bag filter meets the standard requirements and protect the environment and human health.