Bag filter is a common equipment for industrial dust control. It is a consensus that the function and indispensability of dust filter bag for bag filter is also known to the general public. However, how to calculate the number of bags and how to calculate the number of bags Determine how the material chooses how much you know. For the duster bag to have a basic understanding and familiarity before they can use and purchase detours, today Chunhui small standard will take you into the world of dust collector bag.
How to calculate the number of dust bags:
According to the area of ​​a single circular filter bag in the filter bag processing process, due to the filter bag to be fixed in the flower board or short tube, and some also hanging up and fixed on the bag cap, so the two ends of the filter bag need double, medium-sized anti In the air blower, the length of the filter bag is 10m and the diameter is 0.292m. The nominal filter area is 0.0292×10=925m. If the area without the filter effect is 0.75m, the net filter area is 8.25-0.75=7.5m. It can be seen that the useless filter area of ​​the filter bag accounts for 5% to 10% of the filter bag area. Therefore, the size of the net filter area should be specified in the specifications of the large and medium dust collectors.
After obtaining the total filter area and the area of ​​a single dust bag, the number of filter bags can be calculated. If the number of filter bags in each filter bag room is determined, the number of chambers for the entire filter can also be calculated. Although the number of rooms is determined as needed in the design or selection of the precipitator, the number of rooms for more than six rooms is often set to double in consideration of site layout and maintenance convenience. The chambers of a dust collector with less than 5 chambers were designated as a single row.
The filter area of ​​the bag filter is determined, then the size of the air flow to be treated depends on the selection of the filter speed. The formula is: Q = v × s × 60 (m3/h)
In the formula: Q — Process air volume v — Filter wind speed (m/min) s — Total filter area (m2)
Indication: Filtration area (m2) = Air flow (m3/h)/(Filter speed (m/min) x 60)
Dust bag processing air volume refers to the volume of gas that the dust removal equipment can purify in unit time. Units are cubic meters per hour (m3/h) or standard cubic meters per hour (Nm3/h). It is one of the important factors in the design of bag filter. When the bag filter is designed or selected according to the air flow rate, the filter cannot be operated under the specified air flow rate. Otherwise, the filter bag is easily blocked, the service life is shortened, the pressure loss is greatly increased, and the dust removal efficiency is also reduced; however, If the air volume is too large, it will increase equipment investment and floor space. Reasonable choice of processing air volume is often determined based on process conditions and experience.
Calculate the total filter area: According to the total gas passing through the precipitator and the pre-determined filtration rate, the total filtration area is calculated by the following formula: After the total filtration area is obtained, the overall size and size of the bag filter can be determined.
The bag is the key component to determine the dust removal efficiency and working temperature of the bag filter. Superb sewing technology and high-quality filter media are the key to the filter bag! The cost of replacing the bag is the main maintenance cost of the bag filter. Therefore, the working life of the bag relates to the operating status and cost of the dust collector. When choosing a dust bag (filter bag), note that:
1, choose the right filter
The choice of filter media should be based on the temperature, temperature, and chemical characteristics of the gas; particle size, weight, shape, whether it is honed, and the dust concentration, filtration rate, cleaning method, emission concentration, and working conditions of the bag filter. Considering. Under normal circumstances, the needle jet bag filter is selected for needle jet felt, and the chamber-reversed bag filter or mechanical bag filter is made of woven cloth. The dust filter bag and the frame are the main parts of the filter part, and its structure, material surface quality and matching clearance are the main factors that guarantee the filter accuracy, the cleaning effect and the service life.
The filter material is divided into three structures: two-dimensional filter material, three-dimensional filter material, and film-covered filter material: (1) The two-dimensional filter material is a plane-crossed warp and weft yarn woven fabric, which has a large porosity and a high dust penetration rate. The primary dust layer formed on the windward side of the filter is retained during the dust filtration process and plays a major role in filtering, such as "729", "208" and fiberglass cloth. Fiberglass cloth is treated with silicone oil, graphite or Teflon to improve wear resistance and resistance to acid and alkali corrosion. (2) The three-dimensional filter material penetrates loosely arranged fibers in a woven fabric to form a spatially intersecting and dense fiber layer. In the work with the load of the filter material, the dust is retained inside the filter material, forming a dust-containing gradient, in an equilibrium state, and the dust and the filter material are intermingled into a whole. Together play a role in filtration. The dust layer retained on the surface of the filter must be completely removed during cleaning. The surface of the filter material is treated with singeing, calendering, coating, impregnation, etc., and it has waterproof and oil-repellent properties, and can improve and increase the filtering efficiency and the cleaning effect. (3) Film-covered filter media: Using PTFE as raw material to expand into a three-dimensional network structure, a smooth and stable microporous film is laminated on the substrate of the two-dimensional filter three-dimensional filter material to form a micropore. Film laminate filter. In the work with the load of the filter material, the dust is all retained on the outer surface of the film, and all the dust is removed when the dust is removed. The film plays a major role in filtering. After being coated, the filter material is widely used because of its small aperture, high air permeability, low resistance, high filtration accuracy, and comprehensive chemical stability.
2, design a reasonable structure
The structure of the bag should meet the requirements of the filter and dust removal of the bag filter matched with it, and the installation is convenient, the sealing is reliable, the corresponding filtering area and the good filtering state are pursued, and the cleaning is easy and the abrasion is avoided as much as possible. Coordination with relevant parts is reasonable. For example, the outer filter type synthetic fiber cloth bag and the frame should be loosely fitted, and the outer filter type glass fiber cloth bag should be closely matched with the small distance vertical reinforcement frame; the inner filter type bag should consider and set the bag tension.
3, superb sewing technology
(1) The technology is advanced, the sewing size meets the design requirements, and the heat shrinkage size is reserved according to the fabric type and the use temperature.
(2) Completely equipped, reasonable stitch length, no skipping stitches, broken stitches, and sutures meet requirements.
(3) The accessories are of high quality, with reasonable, no burr or broken and damage the bag.
(4) The whole bag is free from defects such as pinholes, skipping yarns, and stains, and has proper packaging. It is not damaged or damp during storage and transportation. Fiberglass bags should not be heavily stressed and the storage period is too long, otherwise it will affect the service life.
Dust bag (filter bag) short life, easy to damage and other defects occurred, from the use of the dust bag (filter bag) to analyze the consequences, most of the situation is in the more than the dust bag (filter bag) under the premise of working conditions The use of formed, especially because of the impact of high temperature to form a dust bag (filter bag) examples of short life, because of the governance bias, the gas temperature tends to spend more time in excess of the dust temperature of the bag (filter bag) Since frequent changes occur, it is advisable to use dust-removing bags (filter bags) with a higher heat resistance.
Accurately choose the main point of filtering bag filter speed, the first is to clarify the nature of dust and dust gas, it is not necessary to accurately understand and view the relationship between filtration speed and dust removal efficiency, filtration resistance, cleaning function. The requirements for the safe use of dust bags (filter bags) for other conditions such as temperature, humidity, and chemical erosion are very careful. Therefore, the accurate choice of dust bag (filter bag) will become the main part of the bag filter to fully promote its performance. Should be based on the following criteria to choose. The first analysis is based on the analysis of the properties of the filtered gas and the dust, and refers to the function selection of various types of dust bag (filter bag). In addition, the design of the filter should be compatible with the function of the dust bag (filter bag) fiber used. In order to promote the function of the dust bag (filter bag) better and more fully, it is necessary to consider the auxiliary equipment such as designing gas cooling installation and pre-dusting installation.
The above is for you to introduce in detail the "6 tons of IF furnace dust collector selected more flomsse dust bag more appropriate" details, to learn more about the hotline 15343174995 0317-5660219 QQ 3406358895 still manager. The company specializes in the production of pulse bag filter, cyclone dust collector, wet desulfurization dust collector, electrostatic precipitator, filter dust collector, exhaust gas purification and deodorization equipment, as well as dust collector bag, precipitator skeleton, pulse electromagnetic valve, pulse controller, cylinder , bag hanging, Venturi tube, screw conveyor, unloader, flapper valve and other dust collector accessories, the company can provide on-site survey, to help customers design selection! Provide structural drawings, working principles, technical parameters, pre-sales, after-sales service intimate! The company in good faith-oriented, quality of survival, reputation and development. Our company has always established long-term friendly trade relations with customers both at home and abroad on the basis of equality and mutual benefit, and warmly welcomes Chinese and foreign customers to call us for business negotiation.
How to calculate the number of dust bags:
According to the area of ​​a single circular filter bag in the filter bag processing process, due to the filter bag to be fixed in the flower board or short tube, and some also hanging up and fixed on the bag cap, so the two ends of the filter bag need double, medium-sized anti In the air blower, the length of the filter bag is 10m and the diameter is 0.292m. The nominal filter area is 0.0292×10=925m. If the area without the filter effect is 0.75m, the net filter area is 8.25-0.75=7.5m. It can be seen that the useless filter area of ​​the filter bag accounts for 5% to 10% of the filter bag area. Therefore, the size of the net filter area should be specified in the specifications of the large and medium dust collectors.
After obtaining the total filter area and the area of ​​a single dust bag, the number of filter bags can be calculated. If the number of filter bags in each filter bag room is determined, the number of chambers for the entire filter can also be calculated. Although the number of rooms is determined as needed in the design or selection of the precipitator, the number of rooms for more than six rooms is often set to double in consideration of site layout and maintenance convenience. The chambers of a dust collector with less than 5 chambers were designated as a single row.
The filter area of ​​the bag filter is determined, then the size of the air flow to be treated depends on the selection of the filter speed. The formula is: Q = v × s × 60 (m3/h)
In the formula: Q — Process air volume v — Filter wind speed (m/min) s — Total filter area (m2)
Indication: Filtration area (m2) = Air flow (m3/h)/(Filter speed (m/min) x 60)
Dust bag processing air volume refers to the volume of gas that the dust removal equipment can purify in unit time. Units are cubic meters per hour (m3/h) or standard cubic meters per hour (Nm3/h). It is one of the important factors in the design of bag filter. When the bag filter is designed or selected according to the air flow rate, the filter cannot be operated under the specified air flow rate. Otherwise, the filter bag is easily blocked, the service life is shortened, the pressure loss is greatly increased, and the dust removal efficiency is also reduced; however, If the air volume is too large, it will increase equipment investment and floor space. Reasonable choice of processing air volume is often determined based on process conditions and experience.
Calculate the total filter area: According to the total gas passing through the precipitator and the pre-determined filtration rate, the total filtration area is calculated by the following formula: After the total filtration area is obtained, the overall size and size of the bag filter can be determined.
The bag is the key component to determine the dust removal efficiency and working temperature of the bag filter. Superb sewing technology and high-quality filter media are the key to the filter bag! The cost of replacing the bag is the main maintenance cost of the bag filter. Therefore, the working life of the bag relates to the operating status and cost of the dust collector. When choosing a dust bag (filter bag), note that:
1, choose the right filter
The choice of filter media should be based on the temperature, temperature, and chemical characteristics of the gas; particle size, weight, shape, whether it is honed, and the dust concentration, filtration rate, cleaning method, emission concentration, and working conditions of the bag filter. Considering. Under normal circumstances, the needle jet bag filter is selected for needle jet felt, and the chamber-reversed bag filter or mechanical bag filter is made of woven cloth. The dust filter bag and the frame are the main parts of the filter part, and its structure, material surface quality and matching clearance are the main factors that guarantee the filter accuracy, the cleaning effect and the service life.
The filter material is divided into three structures: two-dimensional filter material, three-dimensional filter material, and film-covered filter material: (1) The two-dimensional filter material is a plane-crossed warp and weft yarn woven fabric, which has a large porosity and a high dust penetration rate. The primary dust layer formed on the windward side of the filter is retained during the dust filtration process and plays a major role in filtering, such as "729", "208" and fiberglass cloth. Fiberglass cloth is treated with silicone oil, graphite or Teflon to improve wear resistance and resistance to acid and alkali corrosion. (2) The three-dimensional filter material penetrates loosely arranged fibers in a woven fabric to form a spatially intersecting and dense fiber layer. In the work with the load of the filter material, the dust is retained inside the filter material, forming a dust-containing gradient, in an equilibrium state, and the dust and the filter material are intermingled into a whole. Together play a role in filtration. The dust layer retained on the surface of the filter must be completely removed during cleaning. The surface of the filter material is treated with singeing, calendering, coating, impregnation, etc., and it has waterproof and oil-repellent properties, and can improve and increase the filtering efficiency and the cleaning effect. (3) Film-covered filter media: Using PTFE as raw material to expand into a three-dimensional network structure, a smooth and stable microporous film is laminated on the substrate of the two-dimensional filter three-dimensional filter material to form a micropore. Film laminate filter. In the work with the load of the filter material, the dust is all retained on the outer surface of the film, and all the dust is removed when the dust is removed. The film plays a major role in filtering. After being coated, the filter material is widely used because of its small aperture, high air permeability, low resistance, high filtration accuracy, and comprehensive chemical stability.
2, design a reasonable structure
The structure of the bag should meet the requirements of the filter and dust removal of the bag filter matched with it, and the installation is convenient, the sealing is reliable, the corresponding filtering area and the good filtering state are pursued, and the cleaning is easy and the abrasion is avoided as much as possible. Coordination with relevant parts is reasonable. For example, the outer filter type synthetic fiber cloth bag and the frame should be loosely fitted, and the outer filter type glass fiber cloth bag should be closely matched with the small distance vertical reinforcement frame; the inner filter type bag should consider and set the bag tension.
3, superb sewing technology
(1) The technology is advanced, the sewing size meets the design requirements, and the heat shrinkage size is reserved according to the fabric type and the use temperature.
(2) Completely equipped, reasonable stitch length, no skipping stitches, broken stitches, and sutures meet requirements.
(3) The accessories are of high quality, with reasonable, no burr or broken and damage the bag.
(4) The whole bag is free from defects such as pinholes, skipping yarns, and stains, and has proper packaging. It is not damaged or damp during storage and transportation. Fiberglass bags should not be heavily stressed and the storage period is too long, otherwise it will affect the service life.
Dust bag (filter bag) short life, easy to damage and other defects occurred, from the use of the dust bag (filter bag) to analyze the consequences, most of the situation is in the more than the dust bag (filter bag) under the premise of working conditions The use of formed, especially because of the impact of high temperature to form a dust bag (filter bag) examples of short life, because of the governance bias, the gas temperature tends to spend more time in excess of the dust temperature of the bag (filter bag) Since frequent changes occur, it is advisable to use dust-removing bags (filter bags) with a higher heat resistance.
Accurately choose the main point of filtering bag filter speed, the first is to clarify the nature of dust and dust gas, it is not necessary to accurately understand and view the relationship between filtration speed and dust removal efficiency, filtration resistance, cleaning function. The requirements for the safe use of dust bags (filter bags) for other conditions such as temperature, humidity, and chemical erosion are very careful. Therefore, the accurate choice of dust bag (filter bag) will become the main part of the bag filter to fully promote its performance. Should be based on the following criteria to choose. The first analysis is based on the analysis of the properties of the filtered gas and the dust, and refers to the function selection of various types of dust bag (filter bag). In addition, the design of the filter should be compatible with the function of the dust bag (filter bag) fiber used. In order to promote the function of the dust bag (filter bag) better and more fully, it is necessary to consider the auxiliary equipment such as designing gas cooling installation and pre-dusting installation.
The above is for you to introduce in detail the "6 tons of IF furnace dust collector selected more flomsse dust bag more appropriate" details, to learn more about the hotline 15343174995 0317-5660219 QQ 3406358895 still manager. The company specializes in the production of pulse bag filter, cyclone dust collector, wet desulfurization dust collector, electrostatic precipitator, filter dust collector, exhaust gas purification and deodorization equipment, as well as dust collector bag, precipitator skeleton, pulse electromagnetic valve, pulse controller, cylinder , bag hanging, Venturi tube, screw conveyor, unloader, flapper valve and other dust collector accessories, the company can provide on-site survey, to help customers design selection! Provide structural drawings, working principles, technical parameters, pre-sales, after-sales service intimate! The company in good faith-oriented, quality of survival, reputation and development. Our company has always established long-term friendly trade relations with customers both at home and abroad on the basis of equality and mutual benefit, and warmly welcomes Chinese and foreign customers to call us for business negotiation.
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--- PRODUCT SPECIFICATIONS---
Material
Hole patterns
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HEBEI KAYI BUILDING MATERIAL TECHNOLOGY CO.,LTD , https://www.kayimesh.com