Comprehensive description of the structure and performance of the filter material for dust bag
Bag filter material and bag processing technology determine the key conditions for bag filter efficiency. Do not look at the cost of the bag is not high, but the bag replacement cost accounts for the main bag filter, so the operating status of the bag is related to the service life and cost.
The best-selling product in the environmental protection market (dust bag)
METAS high temperature dust bag, FMS fluoride high temperature dust bag, P84 high temperature dust bag, PPS high temperature dust bag, polypropylene needle felt dust bag, easy dust removal polyester needle felt dust bag, antistatic polyester needle Prickly felt dust bag, water and oil resistant needle felt dust bag, acrylic needle dust felt bag.
Dust bag material: material is selected according to the actual conditions, including: the temperature of the flue gas, the filter wind speed, the nature of the dust, the bag itself breathable performance.
Dust bag production: During the processing, some manufacturers use a little knowledge on the line, or a small number of sewing cycles, resulting in powder leakage.
Dust bag is generally divided into pulse dust filter bags, vibratory dust bag and counter-blowing dust bag according to the cleaning method.
In accordance with the shape is not the same, there are round-type bag, flat bag type, envelope type.
Dust bag structure types are:
1, according to the shape of the filter bag is divided into: flat bag (trapezoid and flat) and hole-type bag (cylindrical).
2. According to the way of entering and exiting the wind, it can be divided into: under the wind on the air inlet and under the wind on the long air inlet and DC type (only for flat flat bags).
3, according to the bag purification method is divided into: external filter type and inner filter type. Fibers for filter media include cotton fibers, wool fibers, synthetic fibers, and glass fibers. Filter media made of different fibers have different functions. The conventional filter material has 208 or 901 polyester wheels. The glass fiber filter bag with the temperature not exceeding 120°C, which is treated with silicon germanium turpentine, adopts a common air temperature not exceeding 250°C. The common use of cotton wool fabric is not corrosive; the temperature is 80-90 °C below the dusty gaseous state.
Filter bag structure and application
Bag mouth with elastic ring --- pulse bag dust collector (upper cover type) - Chamber backflush dust collector (bag-type) - bag strapping type - pulse bag filter (top or bottom of the top Type)--Belt wire loop--pulse bag filter--mechanical rotary blow bag filter
Bag mouth rope
Chamber reverse blow bag filter
Bag mouth seal
Side-plug bag filter
Bag mouth hanging
Dust filter bag cleaning
→ 1. Dust removal: Use high-frequency vibration to remove as much dust particles as possible from the wall of the filter bag.
→ 2, chemical experimental treatment: extraction bag sample, using professional equipment to detect the filter bag oil 圬 component, so as to select the appropriate washing raw materials, to maximize the filter bag without causing any damage to the filter bag
→ 3, cleaning: use suitable washing raw materials and strict ratio, low-temperature water cleaning, water flow, moderate strength, no mechanical damage to the filter bag
→ 4, Drying: Use hot air drying at about 110°C to maintain the stability of the filter bag. After the drying, the filter bag will not be deformed or retracted.
→ 5. Repair: Repair of damaged filter bags due to corrosion, holes, etc.
→ 6, detection: the use of the instrument after the cleaning of the filter bag physical indicators to ensure that the quality of cleaning to meet the requirements!
Found that the bag is worn or gray, check or replace the bag. Pay more attention to the operation status of the bag filter, observe its pressure difference, and check the ash system and the ash discharge system.
If the insulation measures of the bag filter are not properly performed, the phenomenon of air leakage will occur. If the outside air flows into the interior of the dust filter, it will also change the internal temperature. The leakage of cold air will greatly reduce the temperature of the dust collector. It will cause the filter bag paste bag.
(Addtime：2018-4-10)
