Structure and composition of bag dust collector
Dust collector ash outlet, air inlet and exhaust duct, filter chamber (middle and lower boxes), clean room, filter bag and frame (bag cage bone), manual air inlet valve, pneumatic butterfly valve, pulse cleaning mechanism
etc.
Working principle of bag dust collector
Bag dust collector is based on the filtration principle The filter dust removal equipment uses organic fiber or inorganic fiber filter cloth to filter out the dust in the gas.
Dust removal process: Dust-containing gas enters the middle box from the air inlet and enters the bag from outside the bag. , the dust is blocked on the outer surface of the filter bag, and the purified air enters the bag, then enters the upper box through the upper part of the bag, and is finally discharged from the exhaust pipe.
Large Pulse The long bag dust collector is a new type of high-efficiency long bag dust collector successfully developed by drawing on advanced domestic and foreign technologies. It is a new type of high-efficiency bag type dust collector developed on the basis of the conventional short bag pulse dust collector
The dust collector not only combines the characteristics of divided chamber backflush and pulse cleaning, but also overcomes the shortcomings of ordinary divided chamber backflushing intensity and general pulse cleaning dust re-attachment. It also lengthens the filter bag and fully Give full play to the role of compressed air in powerful dust removal. It is a large-scale dust removal equipment with high dust removal efficiency, small footprint, stable operation, reliable performance, and easy maintenance
It can be widely used in metallurgy, casting, Building materials, mining, chemical industry and other industries. Performance characteristics 1. Using pulse injection dust cleaning technology, strong dust cleaning ability, high dust removal efficiency, low emission concentration, small air leakage rate, low energy consumption and steel consumption Small, small footprint, stable and reliable operation, good economic benefits. Suitable for flue gas dust removal in metallurgy, building materials, machinery, chemical industry,
electricity, light industry. 2. The box is airtight The design has good sealing performance. The inspection door is made of excellent sealing materials. Kerosene is used to detect leaks during the production process. The air leakage rate is very low
.3. The inlet and outlet air ducts are compactly arranged and the air flow resistance is small.4. Using separate chambers to stop the air and pulse jet dust cleaning, the cleaning cycle is long and the consumption is low. It can exponentially increase the life of the filter bag and valve plate
.5. It can change bags without stopping the machine, and maintenance does not affect the equipment. Normal operation. 6. The upper bag extraction method is adopted to improve the bag changing operation. The working mechanism of the bag dust collector is that the dust-containing flue gas passes through the filter material, the dust particles are filtered out, and the filter material captures The collection of coarse dust mainly relies on inertial collision, and the collection of fine dust mainly relies on diffusion and screening. The dust layer of the filter material also has a certain filtering effect. The dust removal effect of the bag dust collector is related to Many factors are related, but it mainly depends on the filter material. The filter material of the bag dust collector is cloth or felt made of synthetic fiber, natural fiber or glass fiber. The cloth or felt is sewn into pieces as needed. Cylindrical or flat filter bags. According to the properties of the flue gas, select the filter material suitable for the application conditions
. Generally, when the flue gas temperature is lower than 120°C, the filter material is required to have acid resistance and durability When dealing with high-temperature flue gas (lt; 250℃), graphitized glass silk cloth is mainly used. In some special cases, carbon fiber is used. Fiber filter material, etc. It is very important to control the speed of flue gas passing through the filter material (called filtration speed) during the operation of the bag dust collector. Generally, the filtration speed is 0.5-2m/min. For The efficiency of particles larger than 0.1μm can reach more than 99%, and the equipment resistance loss is about 980-I470Pa.