CN111982771A - Device and method for detecting cloth bag dust removal performance in coal-fired power plant - Google Patents
Device and method for detecting cloth bag dust removal performance in coal-fired power plant Download PDFInfo
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- CN111982771A CN111982771A CN202010610335.0A CN202010610335A CN111982771A CN 111982771 A CN111982771 A CN 111982771A CN 202010610335 A CN202010610335 A CN 202010610335A CN 111982771 A CN111982771 A CN 111982771A
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- 239000000428 dust Substances 0.000 title claims abstract description 132
- 239000004744 fabric Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 239000007789 gas Substances 0.000 claims abstract description 31
- 230000006835 compression Effects 0.000 claims abstract description 25
- 238000007906 compression Methods 0.000 claims abstract description 25
- 230000003068 static effect Effects 0.000 claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 22
- 238000007664 blowing Methods 0.000 claims abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims abstract description 12
- 239000003546 flue gas Substances 0.000 claims abstract description 12
- 238000005086 pumping Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 57
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 230000032683 aging Effects 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 238000007791 dehumidification Methods 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 claims 4
- 239000000779 smoke Substances 0.000 abstract description 6
- 238000004887 air purification Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/084—Testing filters
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Abstract
The invention discloses a device and a method for detecting the bag-type dust removal performance in a coal-fired power plant. The first air pump and the second air pump which are provided with the frequency converters can provide stable pumping force and can adjust the output force in real time. And secondly, a temperature control system is arranged, so that the temperature of the flue gas in the cloth bag dust remover device of the power plant can be simulated, and the detected result is more similar to the actual result. And then a dust generating device, a static electricity removing premixing device and an optical concentration detection device are configured, so that the accuracy of the dust concentration in the gas can be ensured. Finally, the compression cylinder provides the back-blowing rapping power for the device, so that the device can test both the static dust removal efficiency and the dynamic dust removal efficiency. The invention optimizes the detection working condition, provides the temperature field condition, has more rigorous and accurate detection result, improves the accuracy of detecting the smoke concentration, and has more diversified parameters of the dust removal efficiency measured by the device.
Description
Technical Field
The invention relates to a device and a method for detecting cloth bag dust removal performance in a coal-fired power plant.
Background
At present, the domestic environmental protection situation is severe, and the standard of environmental protection of the smoke is provided for large coal-fired power plants and the chemical energy industry. The bag-type dust removal is one of several common methods for removing dust from flue gas, wherein heavy flue gas flows through a bag, the windward side of the bag can block a large amount of dust, and the clean and dedusted flue gas can flow out of the bag. And for the quality of the dust removal performance of the new cloth bag and whether the dust removal efficiency of the cloth bag in operation can reach the standard, a clear device and a method are needed for relevant detection, which are beneficial to the control of the quality of the new dust removal cloth bag and can give suggestions on whether the cloth bag in operation needs to be replaced in time.
Disclosure of Invention
The invention aims to solve the problems that the cloth bag dust removal efficiency is not accurately measured in the prior art, and the flue gas containing dust in the actual working condition is carried out at a certain temperature in the cloth bag dust removal process, but the existing detection equipment does not take the situation into consideration, so that the device and the method for detecting the cloth bag dust removal performance in the coal-fired power plant are provided.
The technical scheme adopted by the invention for solving the problems is as follows: a device for detecting the cloth bag dust removal performance in a coal-fired power plant is characterized by comprising a temperature control system, a detection device and an intelligent control feedback system;
the temperature control system comprises a filtering device and a heating device;
the detection device comprises a dust generator, a static electricity removal premixing device, an optical concentration detection device, a vertical dirty air pipeline, a dust container, a transverse air purifying pipe, a compression cylinder, an absolute filter material device, a first electromagnetic valve, a first air pump, a dirty air backup filter material device, a second electromagnetic valve, a second air pump and a tested filter material device;
the intelligent control feedback system comprises an intelligent control device and connecting wires connected with each device;
the filter device is connected with the heating device, the heating device is connected with the static-removing premixing device, the static-removing premixing device is arranged at the upper end of a vertical dirty air pipeline, the dust generator is connected with the static-removing premixing device, the optical concentration detection device is arranged in the vertical dirty air pipeline and is positioned below the static-removing premixing device, the transverse air purifying pipe is connected to the middle of the vertical dirty air pipeline, the tested filter material device is arranged at the joint of the transverse air purifying pipe and the vertical dirty air pipeline, the compression cylinder is connected with the transverse air purifying pipe, the absolute filter material device is arranged at the end of the transverse air purifying pipe, the first air pump is connected to the end of the transverse air purifying pipe, and the first electromagnetic valve is installed between the first air pump and the absolute filter material device; the dust container is arranged at the lower end of the vertical dirty gas pipeline, the dirty gas backup filter material device is connected to the side wall of the vertical dirty gas pipeline above the dust container, the second air pump is connected with the dirty gas backup filter material device, and the second electromagnetic valve is installed between the second air pump and the dirty gas backup filter material device;
the dust generator, the optical concentration detection device, the compression cylinder, the first electromagnetic valve, the first air pump, the second electromagnetic valve and the second air pump are connected with the intelligent control device through connecting wires.
Further, the vertical dirty air pipeline is arranged on the supporting device.
Furthermore, the dust generator is connected with a weighing sensor.
Further, the temperature control system firstly feeds high-purity nitrogen into the filtering device for dehumidification and impurity filtration, then feeds the high-purity nitrogen into the heating device for preheating, and after the high-purity nitrogen reaches the preheating temperature, the high-purity nitrogen enters the static-removing premixing device to be mixed with dust emitted by the dust generator; and the vertical dirty air pipeline and the transverse air purifying pipe are both provided with heat tracing devices.
Furthermore, the intelligent control feedback system provides input, output and feedback signals for the detection device, the intelligent control device can send starting and stopping instructions for the first electromagnetic valve, the first air pump, the second electromagnetic valve, the second air pump, the dust generator and the heating device, and the smoke temperature in the vertical dirty air pipeline and the transverse clean air pipeline is detected by the temperature detection devices such as the thermocouples and fed back to the intelligent control device.
Furthermore, the first air pump and the second air pump provide power for pumping the smoke, and the first air pump and the second air pump are both provided with frequency converters to conveniently adjust the output of the air pumps.
Furthermore, the optical concentration detection device detects the concentration of dust in the gas, the detection value of the optical concentration detection device is fed back to the intelligent control device, and the detection value is compared with a set value in the intelligent control device, so that the dust output amount of the dust generator is adjusted in real time.
Furthermore, the first air pump provides a suction force from left to right for the transverse air purification pipe, and the compression cylinder provides a reverse blowing and vibrating force from right to left for the transverse air purification pipe.
The working method of the device for detecting the bag-type dust removal performance in the coal-fired power plant is characterized by comprising the following steps of: firstly, aging a filter material to be detected, placing the filter material to be detected in a tested filter material device, and placing a standard absolute filter material in an absolute filter material device; secondly, the intelligent control device sets the gas temperature and the gas flow rate, then starts detection, the heating device is started for preheating, after preheating is completed, the first electromagnetic valve, the first air pump, the second electromagnetic valve and the second air pump are started for stable flow rate work, then the intelligent control device is used for starting the dust generator, dust and high-purity nitrogen are premixed in the static-removing premixing device, the optical concentration detection device detects the concentration of the mixed dust and feeds the concentration of the mixed dust back to the intelligent control device in real time, and the dust concentration is adjusted by adjusting the opening degree of the dust generator; after stable extraction for a period of time, starting a compression cylinder to perform back-blowing vibration, blowing and vibrating dust on the windward side of the tested filter material, then closing the compression cylinder to stop blowing and vibrating, and repeating the steps for many times; during the process, dust falling off due to vibration falls into the dust container, the second air pump also provides pumping force, dirty air is purified in the dirty air backup filter material device, and clean air is discharged out of the device; after the aging is finished, performing conventional detection, closing a second electromagnetic valve and a second air pump, and measuring the static dust removal efficiency without compressing the air cylinder to work, wherein only the first air pump is required to provide stable suction force to continuously extract gas with dust, most of dust is filtered by the tested filter material, the rest dust is absorbed by the absolute filter material, and the static dust removal efficiency can be obtained by weighing and calculating the absolute filter material; and (3) starting the compression cylinder once at a certain interval to measure the dynamic dust removal efficiency, keeping the rest steps consistent with the static dust removal efficiency measurement, and finally weighing the absolute filter material to calculate the dynamic dust removal efficiency.
Compared with the prior art, the invention has the following advantages and effects: first, a first air pump and a second air pump of a frequency converter are arranged, so that stable pumping force can be provided, and output force can be adjusted in real time. Secondly, the device is provided with a temperature control system, so that the temperature of the flue gas in the cloth bag dust remover device of the power plant can be simulated, and the detected result is more similar to the actual result. And then the dust generating device, the static electricity removing premixing device and the optical concentration detection device can ensure the accuracy of the dust concentration in the gas. Finally, the compression cylinder provides the back-blowing rapping power for the device, so that the device can test both the static dust removal efficiency and the dynamic dust removal efficiency.
The invention optimizes the detection working condition and provides the temperature field condition, so that the detection result is more rigorous and accurate; in addition, a dust generating device and a static electricity removing premixing device are used in the detection process, so that the accuracy of the smoke concentration is improved, and the smoke concentration can be detected by an optical concentration detection device and adjusted in real time; the compression cylinder provides the power for back flushing and rapping, so that the parameters of the device for measuring the dust removal efficiency become more diversified. Provides a new device and a method for ensuring the dust removal performance of a new cloth bag and detecting the dust removal performance of the cloth bag in operation.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
In the figure: the device comprises a filtering device 1, a heating device 2, a dust generator 3, a static-removing premixing device 4, an optical concentration detection device 5, a vertical dirty air pipeline 6, a supporting device 7, a dust container 8, a transverse air purifying pipe 9, a compression cylinder 10, an absolute filtering device 11, a first electromagnetic valve 12, a first air pump 13, a dirty air backup filtering device 14, a second electromagnetic valve 15, a second air pump 16, an intelligent control device 17, a connecting line 18 and a tested filtering device 19.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Examples are given.
Referring to fig. 1, in this embodiment, a device for detecting the dust removal performance of a cloth bag in a coal-fired power plant is characterized by comprising a temperature control system, a detection device and an intelligent control feedback system;
the temperature control system comprises a filtering device 1 and a heating device 2;
the detection device comprises a dust generator 3, a static electricity removal premixing device 4, an optical concentration detection device 5, a vertical dirty air pipeline 6, a dust container 8, a transverse air purification pipe 9, a compression cylinder 10, an absolute filtering device 11, a first electromagnetic valve 12, a first air pump 13, a dirty air backup filtering device 14, a second electromagnetic valve 15, a second air pump 16 and a tested filtering device 19;
the intelligent control feedback system comprises an intelligent control device 17 and a connecting line 18 connected with each device;
the filter device 1 is connected with the heating device 2, the heating device 2 is connected with the static electricity removing premixing device 4, the static electricity removing premixing device 4 is arranged at the upper end of the vertical dirty air pipeline 6, the dust generator 3 is connected with the static electricity removing premixing device 4, the optical concentration detection device 5 is arranged in the vertical dirty air pipeline 6, the optical concentration detection device 5 is located below the static electricity removing premixing device 4, the transverse air purifying pipe 9 is connected to the middle of the vertical dirty air pipeline 6, the tested filter material device 19 is arranged at the joint of the transverse air purifying pipe 9 and the vertical dirty air pipeline 6, the compression air cylinder 10 is connected with the transverse air purifying pipe 9, the absolute filter material device 11 is arranged at the end of the transverse air purifying pipe 9, the first air pump 13 is connected to the end of the transverse air purifying pipe 9, and the first electromagnetic valve 12 is arranged between the first air pump 13 and the absolute filter material device 11; the dust container 8 is arranged at the lower end of the vertical dirty gas pipeline 6, the dirty gas backup filter material device 14 is connected to the side wall of the vertical dirty gas pipeline 6 above the dust container 8, the second air pump 16 is connected with the dirty gas backup filter material device 14, and the second electromagnetic valve 15 is installed between the second air pump 16 and the dirty gas backup filter material device 14;
the dust generator 3, the optical concentration detection device 5, the compression cylinder 10, the first electromagnetic valve 12, the first air pump 13, the second electromagnetic valve 15 and the second air pump 16 are connected with the intelligent control device 17 through a connecting line 18.
In this embodiment, the vertical dirty air duct 6 is arranged on the support means 7.
In this embodiment, the dust generator 3 is connected to a load cell.
In the embodiment, the temperature control system firstly feeds high-purity nitrogen into the filtering device 1 for dehumidification and impurity filtration, then feeds the high-purity nitrogen into the heating device 2 for preheating, and after the high-purity nitrogen reaches the preheating temperature, the high-purity nitrogen enters the static electricity removal premixing device 4 to be mixed with dust emitted by the dust generator 3; the vertical dirty air pipeline 6 and the transverse air purifying pipe 9 are both provided with heat tracing devices.
In this embodiment, the intelligent control feedback system provides input, output, and feedback signals for the detection device, and the intelligent control device 17 can send start and stop instructions to the first electromagnetic valve 12, the first air pump 13, the second electromagnetic valve 15, the second air pump 16, the dust generator 3, and the heating device 2, and detect the flue gas temperature in the vertical dirty air pipe 6 and the horizontal clean air pipe 9 through temperature detection devices such as thermocouples and feed back the flue gas temperature to the intelligent control device 17.
In this embodiment, the first air pump 13 and the second air pump 16 provide power for pumping the flue gas, and the first air pump 13 and the second air pump 16 are both provided with a frequency converter to conveniently adjust the output of the air pumps.
In this embodiment, the optical concentration detection device 5 detects the concentration of dust in the gas, and the detected value is fed back to the intelligent control device 17 and compared with a set value in the intelligent control device 17, thereby adjusting the dust discharge amount of the dust generator 3 in real time.
In this embodiment, the first air pump 13 provides a suction force from left to right for the transverse clean air pipe 9, and the compression cylinder 10 provides a reverse blowing and vibrating force from right to left for the transverse clean air pipe 9.
The working method comprises the following steps: firstly, aging a filter material to be detected, placing the filter material to be detected in the current time in a tested filter material device 19, and placing a standard absolute filter material in an absolute filter material device 11; secondly, the gas temperature and the gas flow rate are set through the intelligent control device 17, then the detection is started, the heating device 2 is started for preheating, after the preheating is finished, the first electromagnetic valve 12, the first air pump 13, the second electromagnetic valve 15 and the second air pump 16 are started for stable flow rate work, then the dust generator 3 is started through the intelligent control device 17, the dust and high-purity nitrogen are premixed in the static electricity removal premixing device 4, the optical concentration detection device 5 detects the concentration of the mixed dust and feeds the concentration of the mixed dust back to the intelligent control device 17 in real time, and the dust concentration is adjusted through the opening adjustment of the dust generator 3; after stable extraction for a period of time, starting the compression cylinder 10 to perform back-blowing vibration, blowing and vibrating dust on the windward side of the tested filter material, then closing the compression cylinder 10 to stop blowing and vibrating, and repeating the steps for many times; during the period, the falling dust falls into the dust container 8 due to rapping, the second air pump 16 also provides pumping force, and dirty air is purified in the dirty air backup filter material device 14, so that clean air is discharged out of the device; after the aging is finished, performing conventional detection, closing the second electromagnetic valve 15 and the second air pump 16, and measuring the static dust removal efficiency without compressing the air cylinder 10 to work, wherein only the first air pump 13 is needed to provide stable suction force to continuously extract gas with dust, most of dust can be filtered by the tested filter material, the rest dust can be adsorbed by the absolute filter material, and the static dust removal efficiency can be obtained by weighing and calculating the absolute filter material; the dynamic dust removal efficiency is measured by starting the compression cylinder 10 once at intervals during measurement, the rest steps are consistent with the measurement of the static dust removal efficiency, and finally, absolute filter materials are weighed to calculate the dynamic dust removal efficiency.
Those not described in detail in this specification are well within the skill of the art.
Although the present invention has been described with reference to the above embodiments, it should be understood that the scope of the present invention is not limited thereto, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (9)
1. A device for detecting the cloth bag dust removal performance in a coal-fired power plant is characterized by comprising a temperature control system, a detection device and an intelligent control feedback system;
the temperature control system comprises a filtering device (1) and a heating device (2);
the detection device comprises a dust generator (3), a static-removing premixing device (4), an optical concentration detection device (5), a vertical dirty air pipeline (6), a dust container (8), a transverse air purifying pipe (9), a compression cylinder (10), an absolute filter material device (11), a first electromagnetic valve (12), a first air pump (13), a dirty air backup filter material device (14), a second electromagnetic valve (15), a second air pump (16) and a tested filter material device (19);
the intelligent control feedback system comprises an intelligent control device (17) and connecting wires (18) connected with all equipment;
the filter device (1) is connected with the heating device (2), the heating device (2) is connected with the static-removing premixing device (4), the static-removing premixing device (4) is arranged at the upper end of the vertical dirty air pipeline (6), the dust generator (3) is connected with the static-removing premixing device (4), the optical concentration detection device (5) is arranged in the vertical dirty air pipeline (6), the optical concentration detection device (5) is positioned below the static-removing premixing device (4), the transverse air purifying pipe (9) is connected to the middle of the vertical dirty air pipeline (6), the tested filter material device (19) is arranged at the joint of the transverse air purifying pipe (9) and the vertical dirty air pipeline (6), the compression air cylinder (10) is connected with the transverse air purifying pipe (9), the absolute filter material device (11) is arranged at the end of the transverse air purifying pipe (9), the first air pump (13) is connected to the end part of the transverse air purifying pipe (9), and the first electromagnetic valve (12) is installed between the first air pump (13) and the absolute filter material device (11); the dust container (8) is arranged at the lower end of the vertical dirty gas pipeline (6), the dirty gas backup filter material device (14) is connected to the side wall of the vertical dirty gas pipeline (6) above the dust container (8), the second air pump (16) is connected with the dirty gas backup filter material device (14), and the second electromagnetic valve (15) is arranged between the second air pump (16) and the dirty gas backup filter material device (14);
the dust generator (3), the optical concentration detection device (5), the compression cylinder (10), the first electromagnetic valve (12), the first air pump (13), the second electromagnetic valve (15) and the second air pump (16) are connected with the intelligent control device (17) through a connecting line (18).
2. The device for detecting the bag house dust removal performance in a coal fired power plant as set forth in claim 1, characterized in that the vertical dirty air duct (6) is provided on a support device (7).
3. The device for detecting the bag dust removal performance in a coal-fired power plant as defined in claim 1, wherein the dust generator (3) is connected with a weighing sensor.
4. The device for detecting the bag-type dust removal performance in the coal-fired power plant as recited in claim 1, wherein the temperature control system firstly feeds high-purity nitrogen into the filtering device (1) for dehumidification and impurity filtration, then feeds the nitrogen into the heating device (2) for preheating, and feeds the nitrogen into the static-removing premixing device (4) to be mixed with dust emitted by the dust generator (3) after reaching the preheating temperature; and the vertical dirty air pipeline (6) and the transverse air purifying pipe (9) are both provided with heat tracing devices.
5. The device for detecting the bag dust removal performance in the coal-fired power plant as recited in claim 1, wherein the intelligent control feedback system provides input, output and feedback signals for the detection device, the intelligent control device (17) sends start and stop instructions to the first electromagnetic valve (12), the first air pump (13), the second electromagnetic valve (15), the second air pump (16), the dust generator (3) and the heating device (2), and the temperature detection device detects the temperature of the flue gas in the vertical dirty gas pipeline (6) and the transverse clean gas pipeline (9) and feeds the temperature of the flue gas back to the intelligent control device (17).
6. The device for detecting the bag dedusting performance in the coal-fired power plant as recited in claim 1, wherein the first air pump (13) and the second air pump (16) provide power for extracting flue gas, and the first air pump (13) and the second air pump (16) are both provided with frequency converters.
7. The device for detecting the bag dust removal performance in a coal fired power plant as set forth in claim 1, wherein the optical concentration detection device (5) detects the concentration of dust in the gas, the detected value is fed back to the intelligent control device (17), and the detected value is compared with a set value in the intelligent control device (17) to adjust the dust output of the dust generator (3) in real time.
8. The device for detecting the bag house dust removal performance in a coal fired power plant as set forth in claim 1, characterized in that the first air pump (13) provides a suction force from left to right to the transverse clean air pipe (9), and the compression cylinder (10) provides a reverse blowing and vibrating force from right to left to the transverse clean air pipe (9).
9. A method of operating an apparatus for measuring the bag house dust removal performance in a coal fired power plant according to any of claims 1-8, characterized by the following procedure: firstly, aging a filter material to be detected, placing the filter material to be detected in a tested filter material device (19), and placing a standard absolute filter material in an absolute filter material device (11); secondly, the gas temperature and the gas flow rate are set through an intelligent control device (17), then the detection is started, a heating device (2) is started for preheating, after the preheating is finished, a first electromagnetic valve (12), a first air pump (13), a second electromagnetic valve (15) and a second air pump (16) are opened for stable flow rate work, then a dust generator (3) is opened through the intelligent control device (17), the dust and high-purity nitrogen are premixed in a static electricity removing premixing device (4), an optical concentration detection device (5) detects the concentration of the mixed dust and feeds the concentration of the mixed dust back to the intelligent control device (17) in real time, and the concentration of the dust is adjusted through adjusting the opening degree of the dust generator (3); after stable extraction for a period of time, starting the compression cylinder (10) to perform back blowing vibration, blowing and vibrating dust on the windward side of the tested filter material, then closing the compression cylinder (10) to stop blowing and vibrating, and repeating the steps repeatedly; during the process, the falling dust falls into the dust container (8) due to vibration, the second air pump (16) also provides pumping force, dirty air is purified in the dirty air backup filter material device (14), and clean air is discharged out of the device; after the aging is finished, performing conventional detection, closing a second electromagnetic valve (15) and a second air pump (16), measuring the static dust removal efficiency without compressing the work of an air cylinder (10), only providing stable suction by a first air pump (13), continuously extracting gas with dust, filtering most of dust by a tested filter material, adsorbing the rest dust by an absolute filter material, and weighing and calculating the absolute filter material to obtain the static dust removal efficiency; the dynamic dust removal efficiency is measured by starting the compression cylinder (10) once at intervals during measurement, the rest steps are consistent with the static dust removal efficiency measurement, and finally, absolute filter materials are weighed to calculate the dynamic dust removal efficiency.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116256301A (en) * | 2023-05-15 | 2023-06-13 | 四川航天拓达玄武岩纤维开发有限公司 | Basalt fiber filter bag filtering experiment device and method |
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