Steam boiler dust collectors are now in accordance with the national environmental protection discharge requirements most of the use of bag Dust Removal Equipment Bureau, in practical applications bag filter dust removal effect is good, stable operation and is not widely affected by the effects of combustion, but some bag filter is in In the course of the operation, there will also be a phenomenon that the bag is stuck. Why?
(1) Pulse bag filter cleaning time is short and cleaning cycle is too long The dust on the dust bag can not be cleaned, and the dust filter will be switched to the filter state, which will increase the running resistance quickly. For the pulse bag filter, the time used for the cleaning process (that is, the pulse valve injection time) is the cleaning time and can be adjusted within the range of 0.05 to 0.5 s. The interval between the two cleaning intervals is the cleaning cycle, which is generally 0 to 30 minutes. Adjust the cleaning system of pulse bag filter, extend the cleaning time appropriately, increase the amount of compressed air injected into the filter bag, and increase the amount of induced air. At the same time, shorten the cleaning cycle and even use a continuous cleaning method to clean the filter bag. To be thorough and effectively reduce operational resistance.
(2) When a pulse bag filter is used to treat high temperature and high humidity gas, if the gas temperature is lower than the dew point during operation, the water vapor will condense and dew, so that the filter bag will be damp, a large amount of dust will adhere to the surface of the dust bag, and the filter bag will be clogged. The pores, and the compressed air that is blown, cannot be removed, resulting in a bag of filter bags. The dust removal function of the dust bag produced by the paste bag is invalid, the resistance is too large, and the operating condition is deteriorated. To prevent the baghouse from condensing the bag, it is necessary to maintain the processing gas temperature at 25 to 35°C above its dew point. When the dust collector is used to process high-temperature and high-humidity gases, a temperature detection and alarm device shall be installed at the entrance to monitor it, and thermal insulation material such as rock wool shall be installed outside the casing for heat preservation. Before the dust removal system stops running, the wet gas in the dust collector must be completely discharged and replaced with dry air to prevent condensation. That is, after the production equipment stops operating, the dust removal fan must be extended for a period of time before stopping.
(3) The pulsed bag filter is usually operated under negative pressure. If the device leaks, it will inhale a large amount of outside air and rain, so that the dust bag is dampened and the running resistance is increased. Therefore, the dust collector is required to be tightly sealed and the air leakage rate is less than 3%. Welding quality is critical during the installation of the equipment. All welding must be carried out in accordance with the relevant specifications and standards. After the welding is completed, kerosene, phosphor, etc. shall be used for leakage inspection, and the leakage must be re-welded. The inspection door of the dust collector must be sealed with a rubber strip and checked and replaced frequently. Carefully inspect the unloaders and flanges and seal them. Reducing the amount of air leakage from the dust collector can effectively protect the filter bag from the occurrence of paste bags and ensure the smooth operation of the equipment under low resistance.
(4) Pulsed bag dust remover uses compressed air for cleaning and cleaning. The compressed air contains more oil, water and impurities. If it is directly injected into the filter bag without purification, it will cause the dust bag to be contaminated and damp to cause condensation. . If the precipitator treats high-temperature, high-humidity gases, once the cold compressed air is injected, the cold and hot intersection will cause dew condensation on the surface of the filter bag if it reaches the dew point temperature, resulting in the formation of compaction after adhering to a large amount of dust. In order to avoid the contaminants of the compressed air and lead to sticking, it is necessary to formulate and implement a working system, and insist on the daily opening of the gas storage tank, triple supply of gas source, and the discharge valve of the pulse valve manifold to exclude oil and water contaminants. The freeze dryer and heater can be installed in front of the pulse valve manifold, so that the compressed air can be further dehydrated and heated before being sprayed into the filter bag for cleaning.
The above article on "causes of straw scraping of hospital waste straw steam boiler dust collectors" was sorted by Botou City Chunhui Environmental Protection Equipment Co., Ltd. and declined to be reproduced. If you want to know more about the selection of dust collectors, you can call our professionals. The phone qq Shang manager, we have many years of experience in the production of environmental protection equipment, will be based on your operating conditions for the drawings of the design, production, installation and after-sales professional solutions.
(1) Pulse bag filter cleaning time is short and cleaning cycle is too long The dust on the dust bag can not be cleaned, and the dust filter will be switched to the filter state, which will increase the running resistance quickly. For the pulse bag filter, the time used for the cleaning process (that is, the pulse valve injection time) is the cleaning time and can be adjusted within the range of 0.05 to 0.5 s. The interval between the two cleaning intervals is the cleaning cycle, which is generally 0 to 30 minutes. Adjust the cleaning system of pulse bag filter, extend the cleaning time appropriately, increase the amount of compressed air injected into the filter bag, and increase the amount of induced air. At the same time, shorten the cleaning cycle and even use a continuous cleaning method to clean the filter bag. To be thorough and effectively reduce operational resistance.
(2) When a pulse bag filter is used to treat high temperature and high humidity gas, if the gas temperature is lower than the dew point during operation, the water vapor will condense and dew, so that the filter bag will be damp, a large amount of dust will adhere to the surface of the dust bag, and the filter bag will be clogged. The pores, and the compressed air that is blown, cannot be removed, resulting in a bag of filter bags. The dust removal function of the dust bag produced by the paste bag is invalid, the resistance is too large, and the operating condition is deteriorated. To prevent the baghouse from condensing the bag, it is necessary to maintain the processing gas temperature at 25 to 35°C above its dew point. When the dust collector is used to process high-temperature and high-humidity gases, a temperature detection and alarm device shall be installed at the entrance to monitor it, and thermal insulation material such as rock wool shall be installed outside the casing for heat preservation. Before the dust removal system stops running, the wet gas in the dust collector must be completely discharged and replaced with dry air to prevent condensation. That is, after the production equipment stops operating, the dust removal fan must be extended for a period of time before stopping.
(3) The pulsed bag filter is usually operated under negative pressure. If the device leaks, it will inhale a large amount of outside air and rain, so that the dust bag is dampened and the running resistance is increased. Therefore, the dust collector is required to be tightly sealed and the air leakage rate is less than 3%. Welding quality is critical during the installation of the equipment. All welding must be carried out in accordance with the relevant specifications and standards. After the welding is completed, kerosene, phosphor, etc. shall be used for leakage inspection, and the leakage must be re-welded. The inspection door of the dust collector must be sealed with a rubber strip and checked and replaced frequently. Carefully inspect the unloaders and flanges and seal them. Reducing the amount of air leakage from the dust collector can effectively protect the filter bag from the occurrence of paste bags and ensure the smooth operation of the equipment under low resistance.
(4) Pulsed bag dust remover uses compressed air for cleaning and cleaning. The compressed air contains more oil, water and impurities. If it is directly injected into the filter bag without purification, it will cause the dust bag to be contaminated and damp to cause condensation. . If the precipitator treats high-temperature, high-humidity gases, once the cold compressed air is injected, the cold and hot intersection will cause dew condensation on the surface of the filter bag if it reaches the dew point temperature, resulting in the formation of compaction after adhering to a large amount of dust. In order to avoid the contaminants of the compressed air and lead to sticking, it is necessary to formulate and implement a working system, and insist on the daily opening of the gas storage tank, triple supply of gas source, and the discharge valve of the pulse valve manifold to exclude oil and water contaminants. The freeze dryer and heater can be installed in front of the pulse valve manifold, so that the compressed air can be further dehydrated and heated before being sprayed into the filter bag for cleaning.
The above article on "causes of straw scraping of hospital waste straw steam boiler dust collectors" was sorted by Botou City Chunhui Environmental Protection Equipment Co., Ltd. and declined to be reproduced. If you want to know more about the selection of dust collectors, you can call our professionals. The phone qq Shang manager, we have many years of experience in the production of environmental protection equipment, will be based on your operating conditions for the drawings of the design, production, installation and after-sales professional solutions.
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