CN213903247U - High temperature flue gas single tube filter core test platform - Google Patents
High temperature flue gas single tube filter core test platform Download PDFInfo
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- CN213903247U CN213903247U CN202022684115.0U CN202022684115U CN213903247U CN 213903247 U CN213903247 U CN 213903247U CN 202022684115 U CN202022684115 U CN 202022684115U CN 213903247 U CN213903247 U CN 213903247U
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Abstract
The utility model provides a high-temperature flue gas single-tube filter element test platform, which comprises a fuming working section (2), an upstream test working section (3), a visual monitoring working section (4), a downstream test working section (5) and a back flushing system (12) which are connected in sequence; the device is characterized in that the side wall of the upstream testing working section (3) is connected with an upstream particle counter (8), the side wall of the downstream testing working section (5) is connected with a downstream particle counter (9), a filter element (10) is arranged in the visual monitoring working section (4), and a differential pressure transmitter is further arranged between the downstream testing working section (5) and the upstream testing working section (3). The testing platform can continuously carry out on-line automatic detection on the filtering efficiency, and can visually observe the actual conditions of filtering and back-blowing ash removal regeneration through the visual monitoring section (4), and the particle counter is selected to carry out the filtering efficiency test, so that the filtering efficiency test meets the standard requirements better.
Description
Technical Field
The utility model relates to a high temperature flue gas purification handles technical field, especially relates to a high temperature flue gas single tube filter core test platform.
Background
Most of high-temperature flue gas purification treatment uses filter bags for dedusting and filtering, but most of bag-type dust collectors are made of textiles or organic polymers and cannot be used at high temperature for a long time. The prior art personnel develop a ceramic filter element or a metal filter element to replace a bag type dust collector for high-temperature flue gas purification treatment. Therefore, before the construction project of the large-scale filtering system is started, the relevant filtering performance of the filter element is required to be tested, and the selection of the relevant filter element is ensured to meet the technical and engineering application requirements.
Aiming at the performance of a ceramic filter element or a metal filter element, no device capable of rapidly and massively detecting is available, and the filter efficiency, the initial pressure drop and the back flushing effect of the filter element can be detected at the same time. Chinese patent CN209167072U discloses a multipurpose ceramic filter tube testing device, which controls the relative position of a nozzle and a ceramic filter tube through a screw rod and a fine-tuning crosshead shoe, finds out the optimal position relation of the nozzle and the ceramic filter tube according to the reading of a pressure gauge, simulates the back flushing process of the ceramic filter tube of a high-temperature flue gas filtering system, and is additionally provided with a dust concentration meter and a smoke generator to test the filtering efficiency of the ceramic filter tube.
However, in practical use, the filter tube is vertically arranged in the high-temperature flue gas purification system, and because the device is horizontally arranged, the flow condition of the high-temperature flue gas in practical use cannot be simulated, the detection data of the filtering efficiency, the initial pressure drop and the back flushing condition are not accurate enough, and the higher engineering design requirements cannot be met. In addition, when the high-precision filtering tube is detected, a particle counter with higher precision is selected to replace a dust concentration meter, and the test result meets the new standard requirement.
In view of the above, there is a need for an improved testing device in the prior art to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to disclose a high temperature flue gas single tube filter core test platform and usage thereof, this test platform pass through particle counter and calculate filtration efficiency, accord with high efficiency filter's test standard requirement more, simultaneously, has set up visual monitoring workshop section in test platform, can be more audio-visual sees the effect of filtering, blowback process.
In order to achieve the purpose, the high-temperature flue gas single-tube filter element testing platform comprises a fuming working section (2), an upstream testing working section (3), a visual monitoring working section (4), a downstream testing working section (5) and a back flushing system (12) which are sequentially connected; the device is characterized in that an air inlet nozzle (21) is arranged at the bottom of the fuming working section, a dust generator (7) is connected to the side wall of the fuming working section (2), an upstream particle counter (8) is connected to the side wall of the upstream testing working section (3), a downstream particle counter (9) is connected to the side wall of the downstream testing working section (5), a filter element (10) is arranged in the visual monitoring working section (4), and a differential pressure transmitter is further arranged between the downstream testing working section (5) and the upstream testing working section (3).
In some embodiments, the smoking device further comprises a base (6) arranged below the smoking section (2), and the air inlet nozzle (21) is positioned in the base (6) and is connected with the air inlet pipe (1).
In some embodiments, a flower disc is arranged on the top of the visual monitoring section (4), and the filter element (10) is fixedly arranged on the flower disc.
In some embodiments, the back flushing system (12) includes an electromagnetic three-way valve (121), an air outlet pipe (122) and a back flushing air inlet pipe (123) connected to two ends of the electromagnetic three-way valve (121), the air outlet pipe (122) is provided with a pulse electromagnetic valve (14), the back flushing air inlet pipe (123) is provided with a quick-opening electromagnetic valve (13), and the lower end of the electromagnetic three-way valve (121) is further provided with a back flushing nozzle (11).
In some embodiments, the blowback nozzle (11) extends vertically into the downstream test section (5) and to the upper end of the filter cartridge (10).
In some embodiments, the distance between the blowback nozzle (11) and the top of the filter element (10) is 20-50 mm.
In some embodiments, the fuming section (2) is also provided with a digital display hot wire anemometer for measuring the flow speed and the flow rate of the air fed by the air inlet nozzle (21).
In some embodiments, the fuming section (2), the upstream testing section (3), the visual monitoring section (4), the downstream testing section (5) and the blowback system (12) are detachably connected through flanges.
In some embodiments, the visual monitoring section (4) is made of a transparent material.
In some embodiments, the visual monitoring section (4) is made of plexiglas or tempered glass.
Compared with the prior art, the beneficial effects of the utility model are that: (1) the high-temperature flue gas single-tube filter element test platform can continuously perform online automatic detection on the filtering efficiency and can visually observe the actual conditions of filtering and back-flushing ash removal regeneration; (2) the test platform has the function of manually adjusting parameters, and is convenient to operate; (3) the test platform is convenient to disassemble and assemble, and the whole test platform is easy to move and transport; (4) and a multi-channel particle counter is selected to carry out a filtering efficiency test, so that the filtering efficiency test meets the standard requirement.
Drawings
FIG. 1 is a schematic structural view of a high-temperature flue gas single-tube filter element test platform shown in the utility model;
FIG. 2 is a schematic view of the filter element of the present invention;
FIG. 3 is a schematic view of a blowback system according to the present invention;
description of reference numerals: 1. an air inlet pipe; 2. a smoke generation section; 21. an air inlet nozzle; 3. an upstream test section; 4. a visual monitoring section; 5. a downstream testing section; 6. a base; 7. a dust generator; 8. an upstream particle counter; 9. a downstream particle counter; 10. a filter element; 101. a filter element body; 102. a venturi; 11. a blowback nozzle; 12. a blowback system; 121. an electromagnetic three-way valve; 122. an air outlet pipe; 123. back flushing the air inlet pipe; 13. quickly opening the electromagnetic valve; 14. pulse electromagnetic valve.
Detailed Description
The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that the functions, methods, or structural equivalents or substitutions made by these embodiments are within the scope of the present invention.
As shown in fig. 1-3, a high-temperature flue gas single-tube filter element test platform comprises a fuming section (2), an upstream test section (3), a visual monitoring section (4), a downstream test section (5) and a back flushing system (12) which are connected in sequence; the device is characterized in that an air inlet nozzle (21) is arranged at the bottom of the fuming working section (2), the side wall of the fuming working section (2) is connected with a dust generator (7), the side wall of the upstream testing working section (3) is connected with an upstream particle counter (8), the side wall of the downstream testing working section (5) is connected with a downstream particle counter (9), a filter element (10) is arranged in the visual monitoring working section (4), and a differential pressure transmitter is further arranged between the downstream testing working section (5) and the upstream testing working section (3).
The test platform further comprises a base (6) arranged below the fuming section (2), the air inlet nozzle (21) is located in the base (6) and connected with an air inlet pipe (1), and the air inlet pipe (1) is externally connected with an air source, preferably nitrogen.
The top of the visual monitoring working section (4) is provided with a flower disc, and the filter element (10) comprises a filter element body (101) and a venturi tube (102) arranged at an opening at the upper part of the filter element (10). The filter element (10) is made of ceramic fibers or metal wire fibers which are integrally formed. The top end of the filter element (10) is provided with a flange which can be placed on a flower disc, and the flanges of the visual monitoring working section (4) and the downstream testing working section (5) are compressed and fixed on the flower disc to keep good sealing, so that the testing platform is divided into an upstream testing space and a downstream testing space. The upstream test space is arranged below the outer side of the filter element body (101), and the downstream test space is arranged above the inner side of the filter element body (101).
The back flushing system (12) comprises an electromagnetic three-way valve (121), an air outlet pipe (122) and a back flushing air inlet pipe (123) which are connected to two ends of the electromagnetic three-way valve (121), wherein a pulse electromagnetic valve (14) is arranged on the air outlet pipe (122), a quick-opening electromagnetic valve (13) is arranged on the back flushing air inlet pipe (123), and a back flushing spray pipe (11) is further arranged at the lower end of the electromagnetic three-way valve (121).
The back-blowing spray pipe (11) vertically extends into the downstream testing section (5) and extends to the upper end of the filter element (10). The distance between the back flushing spray pipe (11) and the top of the filter element (10) is 20-50 mm, and the distance can be manually adjusted.
And a digital display hot wire anemoscope is also arranged on the fuming section (2) and is used for measuring the flow speed and the flow of the air intake nozzle (21).
The fuming working section (2), the upstream testing working section (3), the visual monitoring working section (4), the downstream testing working section (5) and the back blowing system (12) are detachably connected through flanges, and the test platform is convenient to detach and transport.
The visual monitoring section (4) is made of transparent materials, preferably organic glass or toughened glass, preferably organic glass in the embodiment.
The working principle of the test platform is as follows: nitrogen enters a fuming working section (2) through an air inlet pipe (1), a DUST generator is opened, the DUST generator adopts ISO 12103-1, A2 FINE TEST DUST standard DUST, smoke containing a large amount of small-particle DUST is generated in the fuming working section (2), the smoke is filtered by a filter element (10), the DUST is intercepted on the outer wall of the filter element (10), and clean air is discharged from an air outlet pipe (122) of a downstream testing working section (6) and a back blowing system (12).
Due to the arrangement of the visual monitoring working section (4), the generation and the falling of filter cakes on the outer side of the filter element (10) can be clearly observed in the filtering process and the back flushing process.
After the filtering process is finished, the air inlet nozzle (2) and the pulse electromagnetic valve (14) are closed, and the quick-opening electromagnetic valve (13) is opened to start the back flushing process. Because the quick-opening electromagnetic valve (13) can be opened and closed quickly, compared with a common electromagnetic valve, the quick-opening electromagnetic valve is shorter in opening and closing time and better in back flushing effect. The filter cake on the outer side of the filter element body (101) is easy to fall off through multiple blowback.
The utility model provides an utilize high temperature flue gas single tube filter core test platform to carry out filter core filtration efficiency test method:
the method comprises the following steps: starting an upstream particle counter (8), recording data and setting continuous sampling time to be 60 s;
step two: opening the air inlet pipe (1) and introducing 25mL/min of nitrogen for repeatedly cleaning until the total number of particles with the particle diameter less than 0.5 mu m in the upstream counter (8) is less than 140 particles;
step three: the air inflow is adjusted to 60m3H, keeping the air inlet for 10 min;
step four: starting a digital display hot wire anemometer, and adjusting the air inlet flow to 4-8 m3/h；
Step five: starting a dust generator (7) to generate a plurality of dust particles with the particle size of 0.3-10 mu m;
step six: adjusting the air inlet flow to 1-3 m3H, and recording data of an upstream particle counter (8) and a downstream particle counter (9);
step seven: and when the value of the downstream particle counter (9) is 0 for 5min continuously, stopping air inflow, and calculating the filtering efficiency of the filter element according to the data recorded in the step six.
TABLE 1 upstream and downstream particle counter and Filter efficiency recording sheet of filter element (10)
As can be seen from the test data in Table 1, the filter cartridge (10) of this test is able to provide 100% filtration performance for particles having a particle size of 1 μm or greater within the first 5 minutes of continuous filtration of a dusty gas stream using the cleaning cartridge (10) of this test bench test.
The utility model also provides an utilize high temperature flue gas single tube filter core test platform to carry out the initial pressure drop test method of filter core:
the method comprises the following steps: starting an upstream particle counter (8), recording data and setting continuous sampling time to be 60 s;
step two: opening the air inlet pipe (1) and introducing 25mL/min of nitrogen for repeatedly cleaning until the total number of particles with the particle diameter less than 0.5 mu m in the upstream counter (8) is less than 140 particles;
step three: the air inflow is adjusted to 60m3H, keeping the air inlet for 10 min;
step four: starting a digital display hot wire anemometer, and adjusting the air inlet flow to 4-8 m3/h；
Step five: adjusting the air inlet flow to 2-4 m3The data of the differential pressure transmitter and the digital display hot wire anemoscope under different flow rates are recorded, and the test time is 30 s;
step six: and (5) stopping air inflow after the test is finished, and calculating the initial pressure drop of the filter element according to the data recorded in the step five.
TABLE 2 initial pressure drop recording chart of filter element (10) at different wind speeds
Can learn from table 1 and table 2, this test platform can test the filtration efficiency and the initial pressure drop of filter core (10) simultaneously, and data are more accurate, can satisfy the filter core capability test of higher design requirement.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A high-temperature flue gas single-tube filter element test platform is characterized by comprising a fuming working section (2), an upstream test working section (3), a visual monitoring working section (4), a downstream test working section (5) and a back flushing system (12) which are sequentially connected;
the device is characterized in that an air inlet nozzle (21) is arranged at the bottom of the fuming working section, a dust generator (7) is connected to the side wall of the fuming working section (2), an upstream particle counter (8) is connected to the side wall of the upstream testing working section (3), a downstream particle counter (9) is connected to the side wall of the downstream testing working section (5), a filter element (10) is arranged in the visual monitoring working section (4), and a differential pressure transmitter is further arranged between the downstream testing working section (5) and the upstream testing working section (3).
2. The single tube filter test platform for high-temperature flue gas according to claim 1, further comprising a base (6) disposed below the fuming section (2), wherein the air inlet nozzle (21) is located in the base (6) and connected to the air inlet tube (1).
3. The test platform for the single-tube filter element for the high-temperature flue gas according to claim 1, wherein a faceplate is arranged at the top of the visual monitoring section (4), and the filter element (10) is fixedly arranged on the faceplate.
4. The high-temperature flue gas single-tube filter element test platform as claimed in claim 3, wherein the back-flushing system (12) comprises an electromagnetic three-way valve (121), and an air outlet pipe (122) and a back-flushing air inlet pipe (123) connected to two ends of the electromagnetic three-way valve (121), the air outlet pipe (122) is provided with a pulse electromagnetic valve (14), the back-flushing air inlet pipe (123) is provided with a fast-opening electromagnetic valve (13), and the lower end of the electromagnetic three-way valve (121) is further provided with a back-flushing nozzle (11).
5. The test platform for the single-tube filter element of the high-temperature flue gas according to claim 4, wherein the blowback nozzle (11) vertically extends into the downstream test section (5) and extends to the upper end of the filter element (10).
6. The high-temperature flue gas single-tube filter element test platform as claimed in claim 5, wherein the distance between the back-blowing nozzle (11) and the top of the filter element (10) is 20-50 mm.
7. The high-temperature flue gas single-tube filter element test platform as claimed in claim 2, wherein the fuming section (2) is further provided with a digital display hot wire anemometer for measuring the flow speed and flow of the inlet air of the inlet nozzle (21).
8. The high-temperature flue gas single-tube filter element test platform as claimed in claim 1, wherein the fuming section (2), the upstream test section (3), the visual monitoring section (4), the downstream test section (5) and the back-blowing system (12) are detachably connected through flanges.
9. A high temperature flue gas single tube filter test platform according to claim 1, wherein the visual monitoring section (4) is made of transparent material.
10. The single-tube filter element test platform for high-temperature flue gas according to claim 9, wherein the visual monitoring section (4) is made of organic glass or toughened glass.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022684115.0U CN213903247U (en) | 2020-11-19 | 2020-11-19 | High temperature flue gas single tube filter core test platform |
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| CN202022684115.0U CN213903247U (en) | 2020-11-19 | 2020-11-19 | High temperature flue gas single tube filter core test platform |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557073A (en) * | 2020-11-19 | 2021-03-26 | 飞潮（无锡）过滤技术有限公司 | High-temperature flue gas single-tube filter element test platform and application thereof |
| CN115501710A (en) * | 2022-09-05 | 2022-12-23 | 上海市机电设计研究院有限公司 | Performance evaluation device for catalytic ceramic fiber filter tube |
-
2020
- 2020-11-19 CN CN202022684115.0U patent/CN213903247U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557073A (en) * | 2020-11-19 | 2021-03-26 | 飞潮（无锡）过滤技术有限公司 | High-temperature flue gas single-tube filter element test platform and application thereof |
| CN115501710A (en) * | 2022-09-05 | 2022-12-23 | 上海市机电设计研究院有限公司 | Performance evaluation device for catalytic ceramic fiber filter tube |
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