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However, in the past two years, high-temperature dust bag application area uses a large number of high temperature dust bag composite materials, such as high temperature resistant dust bag Metas, pps high temperature resistant corrosion dust filter bag, P84 high temperature resistant needle filter filter dust bag, Kevlar heat-resistant dust filter bag, flmemet needle felt high temperature dust bag, because it is not only high temperature resistance, and resistance to a certain degree of acidity and alkali resistance, bending resistance is also relatively good, the filter speed is generally selected as 1.0-1.2 m/min, a wide range of applications, reasonable prices, with superior market advantages. Therefore, it is very important to control the speed of the smoke passing through the filter material (called the filtering speed) during operation of the bag filter. High-temperature dust filter bag generally take the filter speed of 0.5-2m/min, for more than 0.1μm particle efficiency up to 99%, the device resistance loss is about 980-I470Pa.
P84 high temperature resistant needle filter mat dust bag, needle felt high temperature filter bag, aramid high temperature dust collector bag, needle felt high temperature filter bag, glass fiber high temperature dust filter bag is high temperature dust filter bag The most widely used type, glass fiber filter high temperature dust bag has more than 20 years of history, it's low cost, high temperature performance, is the main high temperature filter, filtration speed of 0.5-0.9m/min .
Glass fiber woven cloth dust bag: strong filter material, smooth surface, easy to peel dust, temperature can be used at 280 °C for a long time, corrosion resistance, high dust removal efficiency. However, its resistance to abrasion and abrasion is poor, and the wind speed should not exceed 0.5 m/min. Generally used in carbon black, iron making, cement, ceramics, power generation and other industries.
The description of dust bag cleaning is as follows:
1. Testing: The physical indicators of the cleaned filter bag are tested by the instrument to ensure that the cleaning quality meets the requirements.
2. Dust cleaning: The use of high-frequency vibration will remove all the large dust particles that enter the wall of the filter bag, and will not affect the tangling of the fibers, and maintain the goodness of the filter bag and the easy peelability of the dirt.
3, drug soaking: use appropriate chemicals to soak the dust filter bag, remove grease stains in the filter bag gap, to maximize the permeability of the filter bag.
4. Cleaning: Use proper washing materials and strictly match. Low-temperature water washing, uniform water flow, moderate strength, no mechanical damage to the filter bag.
5, quality inspection packaging: fully cleaned up to the dust filter accessories bag after undergoing rigorous quality testing, packaging, packing, paste inspection certificate, shipped to the designated warehouse waiting for shipment.
6, chemical experiment processing: extract bag samples, using a professional instrument to test the filter bag oil composition, so as to select the appropriate washing raw materials, to maximize the cleaning of the filter bag without causing any damage to the filter bag.
The method and working principle of high temperature dust bag cleaning
High-temperature dust bags are widely used in bag dust collectors. Usually, when the flue gas temperature is lower than 120°C and the filter material is required to have acid resistance and durability, polyester fleece dust bag and polyester needle punch felt are often used. Precipitator filter bag; when dealing with high-temperature flue gas (160 °C -280 °C), the main selection of glass fiber needle felt and graphitized glass fiber cloth or silicone oil treatment of glass fiber cloth; in some special cases, the use of carbon fiber filter Material and so on.