The main feature of the explosion-proof bag dust collector is that it does not choose the equipment to clean the dust, but relies on the dust accumulated on the filter bag to a certain thickness, and uses the self-weight of the dust, or the filter bag deformation when the fan is used for parking, or the filter bag is knocked and vibrated manually to make the dust fall. Its advantages are high dust removal power, reliable operation, simple management, less investment costs, long service life of the filter cloth, but the filter bag of low specific load, the initial construction of more cloth, cover an area of large.
Explosion-proof bag filter type has two kinds of progressive gas and lower intake gas. Progress gas explosion-proof bag dust collector airflow direction and dust direction together, dust removal effect is better, it is more than a gas distribution chamber structure, make the height of the dust collector added. The height of explosion-proof bag dust collector with lower intake is lower, but because the airflow direction is opposite to the dust direction, it is bad for dust drop and dust removal is poor.
Explosion-proof bag dust collector generally uses positive pressure operation, which is low to its own structure. Because the dust-containing gas should pass through the fan, the fan blade and shell wear is severe. It can also be operated under negative pressure because of the tight request for its own construction and less use.
Features and advantages of explosion-proof bag dust collector:
(1) Dust removal efficiency can be up to 99.99%.
(2) The dust removal efficiency is not affected by the dust specific resistance, concentration and particle size, and the change of boiler load and the fluctuation of smoke volume have little influence on the discharge concentration at the outlet of explosion-proof bag dust collector.
(3) The general explosion-proof bag dust collector adopts compartment structure, and has a margin in the design, so that the dust collector can be repaired in rotation without affecting the operation of the boiler.
④ The explosion-proof bag dust collector can effectively collect fine dust and remove more heavy metal particles in fly ash than electrostatic precipitator.
⑤ Ancillary equipment is less, technical requirements are not as high as electrostatic precipitator.
⑥ Combined with spray drying equipment, can solve the problem of FLUE gas S02 pollution.
Precautions during installation and preparations before installation:
1, in addition to the civil engineering foundation for the school team, but also to check the quality of the foundation, qualified after the installation.
2. The dust hopper, box and air chamber of the explosion-proof bag dust collector should have good sealing performance, and the joints between the parts should be inspected by penetration method after the assembly of each part.
3, the pipe and the connection of each component of the injection system should do the air tightness test, no air leakage phenomenon.
4. Check all the parts and components, and complete the required parts for installation.
5, check the quality of each part is qualified, whether there is deformation and corrosion, if not qualified should be repaired or replaced, external parts must have a quality certificate and no obvious appearance of wear, before assembly.
6, the installation of color steel and galvanized sheet must be first down, first inside and outside the construction principle, to prevent rain into, at the same time the appearance to be beautiful.
7. Before the filter bag is installed, it is necessary to remove the debris on the air chamber and flower board, and then remove all the installation in the box body and ash hopper, such as lifting lugs, tools, small parts, welding rod, welding slag, etc.