According to the dust bag filter bag filter bag filter selection method is the correct choice of filter cloth another important factor that must be considered, that is, different cleaning methods of bag filter cleaning ash energy, filtration Bag-shaped deformation of the different, should use different structures, varieties of filter cloth.
One-compartment anti-blowing cleaning method Branch-cleaning cleaning bag filter is the use of sub-chamber structure, the valve switch from room to room, forming a reverse air flow, forcing the bag shrinkage or bulging and cleaning. This cleaning method also belongs to the low kinetic energy cleaning, with the help of the working pressure of the bag filter as the cleaning power, repacking the airflow force in special occasions. Chamber bled cleaning dust bag filter requires the use of soft texture, easy deformation and stable size of the thin filter cloth, because the bag filter with the filter outside the filter points, so the selection of the filter slightly different .
Second vibration backflushing and cleaning with the way of cleaning the backflush cleaning and cleaning with the bag-type dust collector means both the vibration and reverse the dual role of dust bag filter, the vibration so that the dust loosening, against the air so that Dust off. Two ways to cooperate with each other, so that the cleaning effect can be improved, especially for fine particles of viscous dust filter. Such bags of dust filter cloth selection, in principle, with the sub-room cleaning bag cleaning dust the same way.
Three mechanical vibration cleaning method Mechanical vibration cleaning bag filter is the use of mechanical devices (including manual, electromagnetic vibration and pneumatic) so that the filter bag to produce vibration, vibration frequency from several times per second to hundreds of times. In addition to this type of bag filter mixers outside the small, mostly used within the filter round bag form. It is characterized by less kinetic energy applied to the dust layer and a greater number of actions, requiring the filter cloth thin and smooth, soft texture, is conducive to the transmission of vibration waves in order to form enough in all the filter surface vibration force.
How to choose the correct dust removal parts?
The first is dust-proof, dust-free power. Such as loading and unloading, belt transfer when adding a runner, you can greatly reduce the amount of dust and soot handling; Bulk material handling, the partial airtight should be used to produce dust, soot in which the cycle of consumption to make its kinetic energy, dust It is basically a natural settlement. This mechanical dust dust removal accessories in foreign countries known as powerless dust removal, in most places are suitable for the use of non-powered dust removal; or to use non-power dust pretreatment, prevention is always more cost-effective than treatment.
The second is to assist the use of spray fog, or foam dust. Direct spray on the one hand, the higher the temperature of flue gas, direct spray to achieve evaporative cooling can use a small amount of water to flue gas cooling, volume contraction, speed reduction is also conducive to dust removal. On the other hand, dust particles can be wetted, bonded to each other, agglomeration, growth, and then easily separated from the atmosphere; so from the emission reduction, energy saving and cost reduction point of view, we must first consider the power of dust and direct spray Dust.
The third is ventilation and dust removal. The use of ventilation and dust removal system also consider the low energy consumption of electric dust, and finally consider the bag filter. Almost the vast majority of our use of ventilation and dust removal, and dust removal parts, appeared to solve the problem of emission reduction, but operating costs are high. Of course, some dust removal efficiency is unstable instability is also a practical problem that must be solved
(Addtime：2018-1-16)
