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Deep filter material: such as needle-punched felt filter bag, its pores are the same as the particle size of the dust material. During the filtering process, the dust needs to form a layer of porous dust on the surface of the filter material to achieve better filtering performance, and the dust is easy to filter. Embedded in the pores of the filter material, the air permeability of the filter bag of the dust collector is reduced, which leads to an increase in the filtration resistance, but the efficiency of the filter cloth is significantly improved in a cleaner state. filter performance.
Surface filter material: The surface is an ultra-fine fiber layer or an ultra-fine porous membrane, and the micropore diameter is smaller than the particle size of the flue gas and dust. When the flue gas passes through the filter cloth, the dust is trapped on the surface of the filter material, and the dust of the surface filter material is trapped. High efficiency and good cleaning effect. All types of membrane filters belong to this category. However, the membrane filtration capacity and the adhesion between the membrane and the base cloth directly affect the performance of the filter cloth. Once the membrane is damaged, the performance of the dust bag will drop sharply.
Surface filter material: It adopts gradient fiber layer structure, also known as gradient filter material. Its radial cross section shows that the front layer is ultra-fine fiber, and the rear layer is coarse fiber layer. The fibers are in a gradually expanding tubular trapezoid structure according to the airflow direction. Experiments show that this material has high efficiency, low resistance and good cleaning effect. Spunlace cloth and gradient fiber composite filter material belong to this category. At present, this kind of filter material is developing rapidly. The fineness of the spunlace fiber is several times different from that of other fibers, and the filtration performance of the filter material is worth looking forward to. Its biggest advantage is that the effect of capturing fine particles is obvious.
Using the filter bag with the deep filter mechanism, the dust is easily embedded in the deep layer of the filter material. The filter material improves the filtration performance under the action of the initial layer of dust, and also increases the power loss of the system. Therefore, the adhesion of the dust on the surface of the filter material is greatly increased. The ash regeneration process requires a stronger reverse force. Taking the pulse cleaning method as an example, the cleaning gas volume and cleaning pressure of the deep filter material are significantly higher than those of the other two types of filter materials. In contrast, the filter media of surface filtration and surface filtration have better filtration performance.
To sum up, the weaving form of dust removal filter material is the main method to improve and improve the technology of dust removal bag filter material at present. Bag filter performance and the effect of use.
Deep filter material: such as needle-punched felt filter bag, its pores are the same as the particle size of the dust material. During the filtering process, the dust needs to form a layer of porous dust on the surface of the filter material to achieve better filtering performance, and the dust is easy to filter. Embedded in the pores of the filter material, the air permeability of the filter bag of the dust collector is reduced, which leads to an increase in the filtration resistance, but the efficiency of the filter cloth is significantly improved in a cleaner state. filter performance.
Surface filter material: The surface is an ultra-fine fiber layer or an ultra-fine porous membrane, and the micropore diameter is smaller than the particle size of the flue gas and dust. When the flue gas passes through the filter cloth, the dust is trapped on the surface of the filter material, and the dust of the surface filter material is trapped. High efficiency and good cleaning effect. All types of membrane filters belong to this category. However, the membrane filtration capacity and the adhesion between the membrane and the base cloth directly affect the performance of the filter cloth. Once the membrane is damaged, the performance of the dust bag will drop sharply.
Deep filter material: such as needle-punched felt filter bag, its pores are the same as the particle size of the dust material. During the filtering process, the dust needs to form a layer of porous dust on the surface of the filter material to achieve better filtering performance, and the dust is easy to filter. Embedded in the pores of the filter material, the air permeability of the filter bag of the dust collector is reduced, which leads to an increase in the filtration resistance, but the efficiency of the filter cloth is significantly improved in a cleaner state. filter performance.
Surface filter material: The surface is an ultra-fine fiber layer or an ultra-fine porous membrane, and the micropore diameter is smaller than the particle size of the flue gas and dust. When the flue gas passes through the filter cloth, the dust is trapped on the surface of the filter material, and the dust of the surface filter material is trapped. High efficiency and good cleaning effect. All types of membrane filters belong to this category. However, the membrane filtration capacity and the adhesion between the membrane and the base cloth directly affect the performance of the filter cloth. Once the membrane is damaged, the performance of the dust bag will drop sharply.
Deep filter material: such as needle-punched felt filter bag, its pores are the same as the particle size of the dust material. During the filtering process, the dust needs to form a layer of porous dust on the surface of the filter material to achieve better filtering performance, and the dust is easy to filter. Embedded in the pores of the filter material, the air permeability of the filter bag of the dust collector is reduced, which leads to an increase in the filtration resistance, but the efficiency of the filter cloth is significantly improved in a cleaner state. filter performance.
Surface filter material: The surface is an ultra-fine fiber layer or an ultra-fine porous membrane, and the micropore diameter is smaller than the particle size of the flue gas and dust. When the flue gas passes through the filter cloth, the dust is trapped on the surface of the filter material, and the dust of the surface filter material is trapped. High efficiency and good cleaning effect. All types of membrane filters belong to this category. However, the membrane filtration capacity and the adhesion between the membrane and the base cloth directly affect the performance of the filter cloth. Once the membrane is damaged, the performance of the dust bag will drop sharply.
Deep filter material: such as needle-punched felt filter bag, its pores are the same as the particle size of the dust material. During the filtering process, the dust needs to form a layer of porous dust on the surface of the filter material to achieve better filtering performance, and the dust is easy to filter. Embedded in the pores of the filter material, the air permeability of the filter bag of the dust collector is reduced, which leads to an increase in the filtration resistance, but the efficiency of the filter cloth is significantly improved in a cleaner state. filter performance.
Surface filter material: The surface is an ultra-fine fiber layer or an ultra-fine porous membrane, and the micropore diameter is smaller than the particle size of the flue gas and dust. When the flue gas passes through the filter cloth, the dust is trapped on the surface of the filter material, and the dust of the surface filter material is trapped. High efficiency and good cleaning effect. All types of membrane filters belong to this category. However, the membrane filtration capacity and the adhesion between the membrane and the base cloth directly affect the performance of the filter cloth. Once the membrane is damaged, the performance of the dust bag will drop sharply.
