1、 Classification of Dust Removal Bags by Temperature 1. High Temperature Dust Removal Bags: High Temperature Dust Removal Bags; It should be processed from expanded glass fiber, glass fiber and other fibers through textile and non-woven techniques, with characteristics such as good thermal stability, filtration, and long service life. To be applied for dust removal in various high-temperature flue gas situations. 2. Room temperature dust removal bag: Room temperature dust removal bags should be made of fibers such as polyester, polypropylene, acrylic, etc. through non-woven and textile techniques, with excellent functions such as good breathability, flat and smooth appearance, good dimensional stability, and simple dust removal. To be used for occupational dust removal and ambient temperature flue gas treatment in typical industrial enterprises with dust pollution. 3. Medium temperature dust removal bag: With the increasing emphasis on environmental protection, especially the development of bag type dust removal skills in recent years, China has begun to use synthetic fibers as high-performance filtering materials that can adapt to harsh working conditions and have a long service life. The commonly used medium temperature dust bag filter materials currently include aramid fiber and PPS series fiber, which are processed through immersion, dyeing, and other techniques to achieve the desired effect. 2、 Some tips when purchasing dust removal bags: China is currently in a wave of environmental protection, especially with the increasingly strict emission standards and air pollution control. The emergence of dust removal bags has promoted the development of the filter industry, and the development of aramid and polysulfide in high temperatures is vast. The correct selection of dust removal bags suitable for the corresponding dust temperature is the key to the bag. If the temperature is too high, the selected dust collector bag will exceed the normal operating temperature. If the bag is light, it will shorten the service life, and if it is serious, it will burn out in a short period of time. Therefore, when selecting a bag, it is necessary to measure and calculate the temperature of the dust collector before choosing the corresponding dust bag. During the installation process of dust removal bags, there may be some issues of bag dropping. One important component in bag dust collectors is the diameter of the perforated plate, which is what we call the perforated plate. The function of the flower board is actually very important, mainly to separate the clean air from the turbid air chamber and the clean air chamber, and it serves as a work partition. The expansion ring of the dust removal bag tightly clamps the mouth of the flower plate hole to isolate the two parts, with almost no gap in the middle. This is the relationship between the dust removal bag and the flower board. Whether the dust removal bag falls off during use or installation is mainly due to two reasons: 1. The wrong size of the dust removal bag expansion ring is used, which rarely occurs and generally has a low probability. Nowadays, many enterprises have begun to implement reasonable disposal of waste dust removal bags. There are two ideal disposal methods, one is physical disposal method, and the other is chemical disposal method. The physical disposal method is to crush the waste dust bag and synthesize it into insulation products. The chemical disposal method involves decomposing the fibers of discarded dust removal bags and then reassembling them. But these two methods are costly, how many companies are willing to invest in environmental protection? However, in the current domestic situation, the work of avoiding secondary pollution of dust removal bags cannot be neglected. Therefore, filter material enterprises should consider this matter first and strive to develop low-cost and effective methods for disposing of waste dust removal bags. The rise of the filter industry is a boost to environmental protection, but how to make the filter industry grow and develop is a question that should be considered more. However, we believe that as long as we find the right methods, are willing to work hard and practice more, the level of our dust bag industry will eventually reach its peak. 2. Bag Dust Collector Flower Plate Holes: The flower plate holes of bag dust collectors are punched using molds. Large bag dust collector flower plates are made with high precision by CNC equipment, but some manufacturers use manual cutting, which is far from the equipment's precision. The edges of the holes are not as round as the holes punched out by the equipment, and there are no marks in the circle. The regularity of the circle is also the main reason why the dust bag expansion ring cannot be opened or opened excessively, or if the circle is irregular and opens into an elliptical shape when the expansion ring is formed, it is the main reason for bag dropping. According to the research on dust collectors, the dust layer established on the dust bag is an important factor affecting the dust removal efficiency. In this case, the appropriate filter material should be selected according to the cleaning method of the bag filter to avoid the dust layer on the surface of the filter material during operation. In addition, it is necessary to choose reasonable spraying parameters and filtering wind speed to avoid a sharp decrease in dust removal efficiency. The dust removal efficiency of the same filter material varies depending on its state. Generally speaking, new or cleaned filter materials have lower dust removal efficiency at the beginning of use compared to those after dust collection, higher after dust accumulation, and lower after dust cleaning. Both of the above situations are related to the establishment of a dust layer on the filter material. When using new filter media, the pores are large, dust is easy to pass through and leak, various effects are not obvious, and the efficiency of the filter media is low. After dust accumulation, a dust layer is established on the surface of the dust removal bag, which plays an important filtering role compared to the filter material, improving efficiency. After cleaning, although there is some dust, there is still a considerable amount of dust on the surface and inside of the filter material, which can maintain the filtration efficiency. Generally speaking, the efficiency of velvet filter material after dust cleaning is higher than that of plain cloth, because it does not rely solely on the dust layer to maintain it. 3、 The installation of dust removal bags is generally made of polyester, fiberglass, or P84 fiber materials. Dust removal bags gradually wear out during the operation of bag filters, causing damage to the bags. When the cloth bag experiences minor wear or damage, we can use old cloth bags or the same new material filter material for repair. But when most of the cloth bags are damaged, they need to be replaced completely. The detailed steps for correctly replacing and installing the dust removal cloth bag are as follows: 1. Open the inspection door above and remove the old cloth bag and skeleton from the drawing board; Unpack the dust bag and take out a bag from it. 2. Open the dust bag and insert it into the flower board hole, ensuring that the seam is in the position of the elliptical straight section. 3. After opening the folded part of the bag under the dust collector flower board, place the dust bag mouth flat on the flower board. 4. Then pinch the spring coil on the upper part of the bag into a concave shape and place it into the perforated plate of the box. 5. Align the spring coil with the flower plate, then restore the spring coil and insert the groove of the spring coil into the flower plate hole exactly. 6. Gently insert the bag cage into the bag opening until the protective cover on the upper part of the bag cage is firmly pressed against the flower board hole inside the box.
