Bag filter bag filter is to determine the efficiency and operating temperature of the key components, the cost of bag filter replacement bag filter is the main maintenance costs. Therefore, the working life of the filter bag is related to the operating status and cost of the precipitator!
To extend the life of dust filter bag method :
1 use the appropriate filter
Selection of filter material should be based on the gas temperature and chemical properties; particle size, weight, shape, whether pecking and dust concentration, filtration speed, cleaning methods, emission concentration and bag filter work system and other factors considered .
Under normal circumstances, the choice of pulse jet bag filter needle felt; sub-chamber anti-blowing bag filter or mechanical vibration bag filter use woven cloth.
2 well-designed structure
The structure of the filter bag should meet the filter and cleaning requirements of the bag filter which is matched with the filter bag. The utility model has the advantages of convenient installation, reliable sealing, pursuing the corresponding filtering area and good filtering state, is easy to clean and avoids the wear as far as possible. Matched with the relevant components.
Such as outside filter synthetic fiber filter bag and the frame should be loose with the outside filter glass fiber filter bag should be closely spaced with the vertical spacing of the small frame; filter bag filter bag should be considered and set the force.
3 superb sewing technology
Advanced technology, sewing size to meet the design requirements, and by filter type and temperature, reserve shrinking size; fully equipped, suture needle spacing reasonable, no jumper, broken line, suture to meet the requirements; Accessories quality, with Reasonable, no burr or fracture damage to the filter bag; The entire filter bag no holes, jump yarns, fouling and other defects, and have the appropriate packaging, storage or transport on the way not damaged or damp. Fiberglass bag should not be heavy pressure, storage period is too long, otherwise it will affect the service life.
4 the correct method of use
External filter bag installation
Pocket mouth and porous plate reliable seal and fixed;
The filter bag is vertically suspended below the perforated plate;
Adjacent filter bags do not collide with each other;
Bag with the frame with the right, straight frame without burrs.
Internal filter bag installation
The upper end of the filter bag is provided with a bag cap and is hung on the beam of the precipitator through a hanging device so that the lower end and the lower bag are reliably sealed and fixed;
Filter bag installation should adjust the tension to achieve the specified value, so that the filter bag filter and blowback does not loosen and fall off, and use the first week and the first month and then adjusted once;
Bag filter parts (deflated collars) with the correct, all parts should not have burrs or broken.
Reliable and effective cleaning
Bag in use, grey dust area gradually increased ash, pressure rise, should be effective cleaning, dust isolation, so that the pressure inside and outside the filter bag to maintain within the set range.
Prevent sudden abnormalities
Bag filter in operation, should prevent unexpected abnormalities, such as a sudden increase in gas temperature, or corrosive gases into, or gas temperature suddenly dropped below the dew point and so on, subject to temperature, humidity, chemical corrosion, mechanical wear and tear Or impact and other factors beyond the tolerance of the bag damaged.
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