Baghouse dust bag called the heart, generally referred to as dust bag or dust bag, bag filter dust bag is a key part of the process of running, usually cylindrical bag hanging vertically precipitator. Dust bag fabrics and design should be the pursuit of high efficiency filter, easy to peel off the dust and durable effect. Dust bag selection is critical, and it directly affects the effect of dust precipitator, select select select from the following aspects with dust bag: gas temperature, moisture and chemical resistance, particle size, dust concentration, filtration velocity, clear The main steps of dust and other factors 1. How to clean dust bag dust bag cleaning: a, cleaning: use of high-frequency vibration, will enter the larger dust particles inside the bag as possible to clear the wall, will not have the fiber tangles prison the degree of impact, adhere to bag a good peeling resistance. b, chemical experiments disposal: bag sample extraction, a professional laboratory testing equipment bag oil component, which conform to the selection phase of washing raw materials, maximize bag wash bag but not to form any damage. c, cleaning: use appropriate cleaning materials and strict ratio, low temperature water cleaning, water average, moderate intensity, no mechanical damage to the bag. d, Drying: using about 110 ℃ hot air drying, maintain dimensional stability of the bag, the bag does not deform after drying, no retraction. e, repair: the bag due to abrasion damage, holes, etc. produced by stopping the use of repair to ensure a high rate of return. f, detection: the use of equipment for cleaning bag after stopping physical indicators of testing to ensure the quality of cleaning reach request. After the disposal of the above step, after cleaning the bag to reach the full use request. 2. For a longer life span of a dust bag) new technology should not be mixed bag of old, damaged at different times to avoid the impact of dust removal equipment is working properly. 2) bag of aging. Mainly due to the following reasons, the reasons for the investigation to be carried out, to take measures to eliminate and replace the dust bag. ① due to abnormal high temperature curing shrinkage; ② reaction due to contact with acid, alkali or organic solvent vapors; ③ reacts with moisture. 3), the cloth should not hang too loose or too tight, too loose easy to dust, easy to pull tight and bad. 4), replace the bag down, first blowing with compressed air, and then check for holes, there are holes left to be replaced after repaired. If they are living in the dust bag paste, rinse with water, leave it to dry after the replacement. 5), dust bag blockage. When the bag clogging, so the resistance increased by increasing the pressure gauge readings show. Toi Toi wear is the main cause blockage, perforation, loss and other phenomena. Cause clogging dust bag causes the table to check and repair. General to take the following measures: ① temporarily strengthen cleaning to eliminate clogging bag; ② replace part or all of the bag; ③ adjust the installation and operating conditions. 3. Advantages and disadvantages of the advantages dust bag dust bag: 1. High dust removal efficiency, capturing more than 0.3nm dust, so dusty gas purification to 15mg / m3 even less. 2. ESP can be difficult to recycle trap dust; and at a certain level nitro compounds, sulfur compounds and other compounds can be collected. 3. Good compliance to changes in load, especially for capturing subtle and boring dust, dry dust collected to facilitate the disposal and recycling applications. 4. Enron is high baghouse dust collection containing gas explosion risk, or with a spark. Dust bag defects: 1. About the different types of gas, you should choose the appropriate type of bag; and needs often change bag, a large bag consumption amount. 2. When collecting dust gas high humidity, moisture should take measures to prevent the formation of condensation due to "paste bag" and therefore dust bag air humidity of the gas have some requests. 3. Greater resistance, ordinary pressure loss 1000 ~ 1500Pa. Utilization rate of domestic dust bag progress from time to time, also increasing the use of life to reach more than four or five years. In addition, R & D PTEF film composite filter media and some other advanced information technology, nor when new break. 4. How to make dust bag to play maximum effectiveness? Such as timely maintenance and use of the scientific method dust bag can not only play the greatest performance, but also to extend the 3-5 months of use, dust bag in use to prevent the gas in the bag interior is cooled to below the dew point, especially in the negative By using a baghouse should pay attention. Dust bag in use to prevent gas in the bag interior is cooled to below the dew point, particularly the use of bag filters under negative pressure should pay attention. Dust bag in use to prevent gas in the bag interior is cooled to below the dew point, particularly the use of bag filters under negative pressure should pay attention. To prevent condensation, must remain within the dust and gas in the system throughout its dew point temperatures are higher than 25 ~ 35 ℃ (such as kiln grinding machine dew point temperature of 58 ℃, operating temperature should be above 90 ℃), to bag to ensure good use of effects. Because the shell often have air leakage into, so that the bag chamber gas temperature below the dew point, the bag will be exposed to moisture, resulting in dust than loosely, but slimy attached to the bag, the fabric perforations blocked, resulting in clear Gray failure, so dust drop too large to continue to run, and some can not generate dust bag paste, so good and reasonable use of scientific and standardized care is the most practical approach. 5. Dust bag main cause of damage generally have the following one, baghouse filtration velocity of filtration velocity is too high, the main reason is the dust bag is damaged. In recent years, some units blind reduce equipment costs, increase profits, in the design of the bag When the dust collector, the filtration velocity increase, short user no obvious response, but shorten the life of the bag. This way the customer has not only save money, but to bring a very large economic burden and wasted time. Second, the use of temperature for the correct selection of the appropriate temperature, dust dust bag, bag is the key. If the temperature is too high, the choice of dust bag to exceed the normal operating temperature, ranging from shortening the life of the bag, will be in serious short burn. Therefore, in the selection of the bag must calculate precipitator inlet temperature was measured, in the selection of appropriate dust bag. Third, choose medium dust cloth dust bag dust depends on the nature of the dust, and to take into account the dust if they contain acid, alkali or corrosive substances. According to the nature of the choice of the dust filter for it, so you can make the normal absorption dust bag, and does not affect their life. Fourth, product quality bag processing particularly important in recent years, a number of small manufacturers in small sewing machine for the processing equipment and the processing line with inferior materials, real ones, and processing levels are far behind. In the use of the bag will occur not long open line, rip, off end of such phenomena. Although smaller size bag can also be used, but a large proportion of the adsorption of dust, there will be out of use for some time bag phenomenon.