Blast Furnace Dust Removal Filtration System

The filtration system is mainly composed of filter bag, keel and flower plate components.
(1) Flower board
The material of the plate is Q235-B, the thickness of the plate is more than 12mm, and the lower part is provided with beam support parts and reinforcing bars to prevent load-bearing deformation. The aperture deviation of the flower plate is not more than 0.1mm, the hole distance deviation is not more than 0.5mm, and the flatness deviation of the overall formation of the flower plate is not more than 0.5mm. The maximum differential pressure of the flower plate is designed according to 40kPa, and the flower plate should have sufficient stiffness, and the deflection is not more than 5mm under the most unfavorable working condition. The opening of the flower plate should be smooth and smooth, no burrs and other defects, and after the installation of the filter bag, it must be tight, firm and convenient to install and disassemble.
The mouth of the flower plate and the hanging cap have enough strength to ensure no deformation and durability at 280 ° C. The vertical deviation between the center of the flower plate and the hanging is not more than 1mm.
The filter bag and its frame are loaded into the hole of the flower plate and fixed on the flower plate through the mounting mechanism of the bag mouth. The flower plate is fixed by the steel member bracket inside the box, and is fully welded in the box.
(2) Filter bag
Material: P84 glass fiber composite needle felt (P84 content is not less than 30%), filter material weight of 800g/m. The bottom of the filter bag is double reinforced at 100mm, and the expansion ring of the filter bag adopts a high-strength elastic expansion ring, which is firmly fixed on the flower plate.
Filter bag sewing: filter bag mouth three layers of thickening and strengthening sewing process, the mouth with two reinforced seals.
Filter bag service life of more than three years.
The working temperature of the filter bag is 90 ~ 260℃, and the working limit temperature is 300℃ (30min).
(3) Cage bones
Cage bone specification: Matching with filter bag. It adopts the combined structure, easy to disassemble, and adopts the piecewise plug-in technology and the non-obstructing filter bag combination component technology between each section, and the concentricity deviation is less than 5mm. The cage bone is made of carbon steel, and the joint is not exposed to the surface of silicone spraying treatment. The longitudinal bars and backstay rings of the bag cage are evenly distributed, the number of longitudinal bars is not less than 14, and the spacing of backstay rings is less than 250mm. The top of the keel is provided with a special high-efficiency Wenckeel tube.
The keel adopts a cage structure with a diameter of not less than 4mm round steel and round steel support group welded and galvanized to prevent the filter bag from squishing and affecting the flow through.