Q: How to determine the size of dust filter bag?
A: Firstly, talk about the length of the bag dust bag, and in the case of flue gas treatment capacity, the same filter dust bag and speed bag diameter and increase the length of the bag dust bag can reduce the number of bags, thereby reducing the footprint, reducing cleaning system solenoid valve, pulse valve, injection pipe and other components, saving investment, but also shorten the cleaning cycle. On the other hand, extended filter bag, the cleaner body also extends upward, which means you have to increase the intensity, so that the cost of equipment increases; From the pulse injection perspective, the total length of the bag to make the dust bag is effectively cleared ash, it is necessary at one end of the application is sufficiently large injection energy, dust bag bag longer, the greater the energy requirements, bag blowing end the more fragile; Dust bag bag lengthened, plus the weight of the media supported large, also increase the tension. While if the top of the bag with too much tension, the seam may pull broken; when online cleaning, bag longer, the greater the possibility of dust from the bag filter bag is returned; if off-line cleaning , the longer the bag dust bag after cleaning pause time should be extended, compartment filter cleaning recovery slower; In addition, the bag is too long, the installation, maintenance, inspection will be inconvenient; Filter if installed indoors, dust bag bag length is also subject to building height restrictions. According to the past developments, the mid-1950s to the mid-1970s, the pulse dust collector bag length is generally not more than 3.6mm, 20 in the 1980s up to close to $ 5m, 90 years has increased to 6m, in recent years, increased to more 8-10m, mainly because of power plant boilers such as large gas processing project led to increased pulse dust collector bag length direction. As dust bag bag diameter, it is related with the filter meterial. Due to various media have their width dimension, to make full use of the filter, bag diameter should be determined according to the width of the filter. For example, the width of 990mm fabric, leaving the seam must take the head, it can be made into two 152mm diameter filter bag. Dust bag diameter of size is also affected. For example, at about 7.5m2 ground, with a diameter of 152mm, length of 3m bag filter area of about 163m2, if the diameter of 305mm instead of the bag, you need to get the same length of 4.3m in the same area of the ground filter area. The thickness of the bag is also aligned with the needs of the energy and pulse cleaning valve related. Commonly used in long pulse dust collector bag, the diameter is usually 152mm; short bag, diameter is generally 120 or 130mm.
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