CN210631838U - High-precision dust remover for treating high-humidity, high-temperature and high-dust smoke - Google Patents
High-precision dust remover for treating high-humidity, high-temperature and high-dust smoke Download PDFInfo
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- CN210631838U CN210631838U CN201920854643.0U CN201920854643U CN210631838U CN 210631838 U CN210631838 U CN 210631838U CN 201920854643 U CN201920854643 U CN 201920854643U CN 210631838 U CN210631838 U CN 210631838U
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Abstract
A high-precision dust remover for treating high-humidity, high-temperature and high-dust flue gas drives a sealing bowl array to move up and down by using an air cylinder, seals or opens each air outlet of the filter array, and works in a filtering and dust removing state in turn; the hydrophilic hollow fiber membrane is used as a main filter material to obtain the capability of resisting high humidity, high temperature and high dust; the ultrahigh precision processing effect of less than 1ug/m is obtained by the advantages of the materials; and point-to-point sampling and measuring methods are adopted to realize the detection of each filter element. Realizes the fine treatment of high pollution of the large industry.
Description
Technical Field
A high-precision dust remover for treating high-humidity high-dust flue gas.
Background
The term "high humidity" as used herein means that the moisture in the flue gas reaches a saturated state, even a dew condensation state; the high temperature means that the temperature in the flue gas reaches 150-250 ℃; the high dust refers to the dust content in the flue gas reaching more than 100g/m through heavy cultivation; the high precision refers to that the dust content of the flue gas treated by the device is reduced to below 10ug/m through cultivation.
The treatment of high temperature flue gases with a large amount of moisture mixed with a large amount of dust is a complicated and difficult technique. Only dust with larger particles can be separated by a centrifugal method, so that high filtering precision is difficult to obtain; at present popular sack cleaner or folding membrane tube-shape dust remover, when faced dry flue gas, its filter fineness can only reach 1-3 mg/m to high, when faced the flue gas that the moisture content is high, the operating temperature that needs to guarantee the dust remover is higher than the dew point of flue gas, when the temperature reduces to a certain degree, vapor can condense into liquid, moistens the dust, leads to the dust remover to block up, consequently if the flue gas temperature is low excessively, need install the heater, and is costly, is difficult to operate. In view of this difficulty, in industrial production, a water washing method is generally adopted for the treatment of high-humidity and high-dust flue gas. The water washing method has the defects of consuming a large amount of water and electric resources, and having more equipment, field and maintenance investment, and the highest filtering precision is not a successful precedent better than 1-3 mg/m cultivation. The common filter cartridge and cloth bag have poor high temperature resistance.
Disclosure of Invention
The invention aims to provide a high-precision dust remover for treating high-humidity, high-temperature and high-dust flue gas, which is characterized in that: the box body (14) of the dust remover is divided into an upper bin and a lower bin by a large pattern plate (29), the lower bin is connected with an air inlet main pipe (12) through an air inlet branch pipe (11), the upper bin is connected with an air outlet main pipe (28) through an air outlet branch pipe (27), and an air outlet valve (26) is arranged between the air outlet branch pipe (27) and the air outlet main pipe (28);
the large pattern plate (29) is provided with a membrane module array formed by a series of hollow fiber membrane modules (24), the upper part of each hollow fiber membrane component (24) respectively faces a sealing bowl (25), the front section of each sealing bowl (25) is made of flexible materials, the middle section is made of steel, the rear section is an air outlet pipe, the air outlet pipe of the rear section of each sealing bowl (25) is connected with an air pipe frame (23) to form an array of the sealing bowls (25) fixed on the air pipe frame (23), four corners of the air pipe frame (23) are respectively provided with a sealing bowl array driving air cylinder (22) with the stroke of 1-3 cm, and the air pipe frame (23) is a hollow pipe, one end of the hollow pipe is connected with a pulse air valve (20) outside the dust remover box body (14) through a section of hose (21) and a pipe joint, and the other end of the pulse air valve (20) is connected to a high-pressure air storage tank (19);
the outlet end of each hollow fiber membrane module (24) is provided with a sampling tube (16) corresponding to the hollow fiber membrane module, the sampling tube (16) is connected with a dust measuring instrument (18) through a switcher (17), and the working effect of each hollow fiber membrane module (24) is monitored;
under the drive of a fan, the negative pressure in the air outlet main pipe (28) attracts the flue gas in the air inlet main pipe (12) to enter a dust remover box body (14), dust in the flue gas is filtered by membrane wires (15) in an array of hollow fiber membrane components (24), clean gas enters the outlet end of the hollow fiber membrane components (24), a gas pipe frame (23) is positioned at an upper position under the action of a sealing bowl array driving cylinder (22), the distance of 1-3 cm is reserved between the edge of a sealing bowl (25) and the outlet end of the hollow fiber membrane components (24), and clean air can smoothly enter an upper chamber and is sent out through an air outlet branch pipe (27) and the air outlet main pipe (28);
dust can form powder cakes on the outer surface of the membrane wire (15), when the powder cakes are excessively accumulated, the air resistance of the membrane wire can be caused to rise, at the moment, the sealing bowl array drives the air cylinder (22) to start to move downwards, the air pipe frame (23) and the sealing bowls (25) are pushed to move downwards, the edge of each sealing bowl (25) is in contact with and seals the outlet end of the corresponding hollow fiber membrane assembly (24), the pulse air valve (20) is opened, high-pressure back-blowing air flow in the high-pressure air storage tank (19) is flushed into the inner cavity of the membrane wire (15), the powder cakes attached to the outer surface of the membrane wire (15) are blown down, the original air resistance is recovered, then the pulse air valve (20) is closed, the sealing bowl array drives the air cylinder (22) to move upwards, and the hollow fiber membrane assembly (24) array enters the filtering working condition again;
because the specific surface area of hollow fiber membrane filter core is big, and length is only 0.5-1.5 m, is far less than the length of dust removal sack 2.5-8 m, therefore dust remover box (14) also are different with the structure of traditional sack cleaner, characterized by: the dust remover box body (14) is composed of a left box body (30), a right box body (34) and a middle channel (31), wherein an air inlet main pipe (12) and an air outlet main pipe (28) are arranged in the middle channel (31), the lower half parts of the left box body (30) and the right box body (34) are made into slopes of 30-45 degrees, a dust outlet (32) is arranged at the bottom, and accumulated dust is discharged into the middle channel (31) and is discharged through a main dust outlet (33).
Because the total height of the dust collector box body (14) is far lower than that of the traditional bag-type dust collector, a plurality of layers of dust collector box bodies (14) are overlapped, and the occupied area can be saved. The method is characterized in that: 3-5 layers of the dust collector box bodies (14) are overlapped and arranged in the vertical direction to form a dust removing tower (40) in a three-dimensional layout, and 2-100 dust removing towers (40) are continuously arranged in the horizontal direction to form a dust removing tower array.
In order to realize that the high dust flue gas can still be reliably filtered under the condition of high humidity and even dewing, the device is characterized in that: the membrane filaments (15) of the adopted hollow fiber membrane component are hydrophilic polytetrafluoroethylene hollow fiber membrane filaments.
In order to accurately detect the working state and the precision of the dust remover and find the accurate position of a fault, the device adopts a sensor itinerant detection structure. The method is characterized in that: the outlet end of each hollow fiber membrane module (24) is provided with a sampling tube (16), all the sampling tubes (16) penetrate out of the dust remover box body (14) and are connected with the inlet end of the switcher (17), the outlet end of the switcher (17) is connected to the dust measuring instrument (18), under the respective and selective conditions of the switcher (17), the dust measuring instrument (18) alternately monitors samples taken from each hollow fiber membrane module (24) and judges the working effect of each hollow fiber membrane module (24);
the proper material is selected to bear the high temperature of 150-250 ℃, and the method is characterized in that: the membrane filaments adopted by the hollow fiber membrane module (24) are polytetrafluoroethylene hollow fiber membranes; the resin or plastic for casting the hollow fiber membrane module (24) is resin or silicon rubber with the working temperature of more than 150 ℃, and the shell of the hollow fiber membrane module (24) is made of resin or silicon rubber or metal material with the working temperature of more than 150 ℃.
In order to achieve the purpose of sealing the back-blowing airflow under the high-temperature condition, the device is characterized in that: the front sealing part of the sealing bowl (25) is made of silicon rubber, the middle section is made of stainless steel, and the rear section is an air outlet pipe.
Drawings
FIG. 1 is a schematic diagram of the core part of an example of a high-precision dust collector for processing high-humidity high-dust flue gas. FIG. (14) dust catcher case; (29) a large pattern plate; (24) a hollow fiber membrane module; (25) sealing a bowl; (22) a hose; (20) a pulse air valve; (19) a high pressure gas storage tank; (11) an intake branch pipe; (12) an intake manifold; (27) an air outlet branch pipe; (28) a gas outlet header pipe; (26) an air outlet valve; (15) membrane silk; (16) a sampling tube; (17) a switch; (18) and (5) a dust measuring instrument.
FIG. 2 is a schematic view showing the structure of an example of the dust separator case (14). In the figure: (30) a left box body; (34) a right box body; (31) a middle channel; (32) a dust outlet; (33) a dust outlet.
FIG. 3 is a schematic view of an example of the dust removal tower (40).
Detailed description of the invention
According to the small experimental device, 50m of air volume, 680pa of air pressure and 0.3Mp of blowback pressure are respectively subjected to online experimental operation for one month in a certain zinc oxide production line and a certain coke preheating working section, upstream dust concentration is 10-100 g/m of thin film dry powder, humidity is 100%, and precision after filtration is less than 1ug/m of thin film dry powder.
According to the medium-sized experimental device, air volume is 3800 m/h, air pressure is 680pa, and blowback pressure is 0.3Mp, the medium-sized experimental device runs on line in a sintering section of a certain lead smelting plant, upstream dust concentration is 50-100 g/m for thin film plantation, the temperature is 99 ℃, the humidity is 63%, and the precision after filtration is less than 1ug/m for thin film plantation. Wherein, the number of pm0.3u particles was 3640 and pm2.5 cases was 0.
Claims (6)
1. The utility model provides a handle high accuracy dust remover of high humidity, high temperature, high dust flue gas, its essence lies in: the box body (14) of the dust remover is divided into an upper bin and a lower bin by a large pattern plate (29), the lower bin is connected with an air inlet main pipe (12) through an air inlet branch pipe (11), the upper bin is connected with an air outlet main pipe (28) through an air outlet branch pipe (27), and an air outlet valve (26) is arranged between the air outlet branch pipe (27) and the air outlet main pipe (28);
the large pattern plate (29) is provided with a membrane component array formed by a series of hollow fiber membrane components (24), the upper part of each hollow fiber membrane component (24) respectively faces to a sealing bowl (25), the front section of each sealing bowl (25) is made of flexible materials, the middle section of each sealing bowl is made of steel, the rear section of each sealing bowl is an air outlet pipe, the air outlet pipe of the rear section of each sealing bowl (25) is connected with an air pipe frame (23), and the array of the sealing bowls (25) fixed on the air pipe frame (23) is formed;
four corners of the air pipe frame (23) are respectively provided with a sealing bowl array driving air cylinder (22) with the stroke of 1-3 cm, the air pipe frame (23) is a hollow pipe, one end of the hollow pipe is connected with a pulse air valve (20) positioned outside the dust remover box body (14) through a section of hose (21) and a pipe joint, and the other end of the pulse air valve (20) is connected to a high-pressure air storage tank (19);
the outlet end part of each hollow fiber membrane module (24) is provided with a sampling tube (16) corresponding to the hollow fiber membrane module, the sampling tube (16) is connected with a dust measuring instrument (18) through a switcher (17), and the working effect of each hollow fiber membrane module (24) is monitored in turn in a time-sharing manner;
under the drive of a fan, the negative pressure in the air outlet main pipe (28) attracts the flue gas in the air inlet main pipe (12) to enter a dust remover box body (14), dust in the flue gas is filtered by membrane wires (15) in an array of hollow fiber membrane modules (24), clean gas enters the outlet end of the hollow fiber membrane modules (24), a gas pipe frame (23) is positioned at an upper position under the action of a sealing bowl array driving cylinder (22), the distance of 1-3 cm is reserved between the edge of a sealing bowl (25) and the outlet end of the hollow fiber membrane modules (24), and clean air can smoothly enter an upper chamber and is sent out through an air outlet branch pipe (27) and the air outlet main pipe (28);
dust can form powder cakes on the outer surfaces of the membrane wires (15), when the powder cakes are accumulated too much, the air resistance of the membrane wires can be caused to rise, at the moment, the sealing bowl arrays drive the air cylinders (22) to start to move downwards, the air pipe frames (23) and the sealing bowls (25) are pushed to move downwards, the edge of each sealing bowl (25) is in contact with and seals the outlet ends of the corresponding hollow fiber membrane assemblies (24), the pulse air valves (20) are opened, high-pressure reverse blowing air flow in the high-pressure air storage tanks (19) is flushed into the inner cavities of the membrane wires (15), the powder cakes attached to the outer surfaces of the membrane wires (15) are blown down, the original air resistance is recovered, then the pulse air valves (20) are closed, the sealing bowl arrays drive the air cylinders (22) to move upwards, and the hollow fiber membrane assemblies (24) enter the filtering working condition again.
2. The high-precision dust remover for treating high-humidity, high-temperature and high-dust flue gas as claimed in claim 1, wherein: dust remover box (14) are by left box (30), right box (34), and well passageway (31) triplex constitutes, are equipped with air inlet manifold (12) and air outlet manifold (28) in well passageway (31), and the slope is made to the latter half of left box (30) and right box (34), and dust outlet (32) are equipped with to the bottom, excrete the laying dust in well passageway (31), discharge through total dust outlet (33).
3. The high-precision dust remover for processing high-humidity, high-temperature and high-dust flue gas as claimed in claim 1, wherein: 3-5 layers of the dust collector box bodies (14) are overlapped and arranged in the vertical direction to form a dust removing tower (40) in a three-dimensional layout, and 2-100 dust removing towers (40) are continuously arranged in the horizontal direction to form a dust removing tower array.
4. The high-precision dust remover for processing high-humidity, high-temperature and high-dust flue gas as claimed in claim 1, wherein: the membrane filaments (15) of the adopted hollow fiber membrane component are hydrophilic polytetrafluoroethylene hollow fiber membrane filaments.
5. The high-precision dust remover for processing high-humidity, high-temperature and high-dust flue gas as claimed in claim 1, wherein: the outlet end of each hollow fiber membrane module (24) is provided with a sampling pipe (16), all the sampling pipes (16) penetrate out of the dust remover box body (14) and are connected with the inlet end of the switcher (17), the outlet end of the switcher (17) is connected to the dust measuring instrument (18), under the respective and selective conditions of the switcher (17), the dust measuring instrument (18) alternately monitors samples taken from each hollow fiber membrane module (24) in a time-sharing mode, and the working effect of each hollow fiber membrane module (24) is judged; the membrane filaments adopted by the hollow fiber membrane module (24) are polytetrafluoroethylene hollow fiber membranes; the resin or plastic for casting the hollow fiber membrane module (24) is resin or silicon rubber with the working temperature of more than 150 ℃, and the shell of the hollow fiber membrane module (24) is made of resin or silicon rubber or metal material with the working temperature of more than 150 ℃.
6. The high-precision dust remover for processing high-humidity, high-temperature and high-dust flue gas as claimed in claim 1, wherein: the front section sealing part of the sealing bowl (25) is made of high-temperature silicon rubber, the middle section is made of stainless steel, and the rear section is an air outlet pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920854643.0U CN210631838U (en) | 2019-06-08 | 2019-06-08 | High-precision dust remover for treating high-humidity, high-temperature and high-dust smoke |
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| CN201920854643.0U CN210631838U (en) | 2019-06-08 | 2019-06-08 | High-precision dust remover for treating high-humidity, high-temperature and high-dust smoke |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064261A (en) * | 2019-06-08 | 2019-07-30 | 郭绍华 | It is a kind of processing high humility, high temperature, high-dust flue gas high-precision deduster |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064261A (en) * | 2019-06-08 | 2019-07-30 | 郭绍华 | It is a kind of processing high humility, high temperature, high-dust flue gas high-precision deduster |
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Effective date of registration: 20220407 Address after: 518000 b801, platform building of Key Laboratory of Virtual University Park, No. 1, Yuexing Second Road, high tech Zone community, Yuehai street, Nanshan District, Shenzhen, Guangdong Province Patentee after: Fenghe clean (Shenzhen) new material technology Co.,Ltd. Address before: 518000 Building C 1001, Xiamengyuan, 2075 Lianhua West Road, Futian District, Shenzhen City, Guangdong Province Patentee before: Guo Shaohua |
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Effective date of registration: 20230720 Address after: B608, Shenzhen Industry University Research Base Building, Huazhong University of Science and Technology, No. 9, Yuexing Third Road, High tech Zone Community, Yuehai Street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: GUANGDONG FENGHE PURIFICATION ENGINEERING Co.,Ltd. Address before: 518000 b801, platform building of Key Laboratory of Virtual University Park, No. 1, Yuexing Second Road, high tech Zone community, Yuehai street, Nanshan District, Shenzhen, Guangdong Province Patentee before: Fenghe clean (Shenzhen) new material technology Co.,Ltd. |
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