CN218890686U - Secondary purification device for outlet flue gas of dust remover - Google Patents
Secondary purification device for outlet flue gas of dust remover Download PDFInfo
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- CN218890686U CN218890686U CN202222911275.3U CN202222911275U CN218890686U CN 218890686 U CN218890686 U CN 218890686U CN 202222911275 U CN202222911275 U CN 202222911275U CN 218890686 U CN218890686 U CN 218890686U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The utility model relates to the technical field of flue gas emission treatment, in particular to a secondary flue gas purification device at an outlet of a dust remover, which comprises the dust remover, an ash conveyer, a dust removing fan, a smoke dust on-line monitor with the model of QIA < + > and a chimney, wherein the output end of an ash bucket at the bottom of the dust remover is connected with the input end of the ash conveyer, the output end of the dust removing fan is connected with the input end of the chimney, the smoke dust on-line monitor is arranged on the chimney to detect smoke dust in the chimney, a secondary purification device is arranged between the dust removing fan and the dust remover, the input end of the secondary purification device is connected with the output end of the dust remover, and the output end of the secondary purification device is connected with the input end of the dust removing fan; aiming at the requirements of standard lifting and transformation of a dust removal system, the existing dust remover does not need to be transformed, the implementation is more convenient, and the investment is saved. In addition, the secondary purification device adopts a low-voltage power supply to supply power, and the operation power consumption is low.
Description
Technical Field
The utility model relates to the technical field of flue gas emission treatment, in particular to a secondary flue gas purifying device at an outlet of a dust remover.
Background
The common dust remover is provided with a bag type dust remover, an electric dust remover and the like, and is used for treating dust-containing flue gas in industries of metallurgy, electric power, building materials and the like, filtering and purifying the dust-containing flue gas and then discharging the dust after reaching the standard, and recycling the dust collected by the dust remover;
the environment-friendly policy of ultralow emission of flue gas not only requires to reduce the emission concentration of smoke and dust, but also requires that the production enterprises meet the requirement of the ultralow emission concentration limit value in more than 95 percent of time periods, and when the requirement is not met, the existing dust removal facilities are required to be upgraded and modified, so that the processing capacity and the efficiency are improved. The upgrade and reconstruction can adopt measures such as overall replacement of filter materials, reconstruction of the structure of the dust remover body and the like, which means larger investment;
some enterprises dedusting facilities are close to the standard emission or do not meet the standard reaching rate of 95% of the time period, if conventional reconstruction measures are adopted, the reconstruction difficulty is high, the investment funds are large, the emission reduction of the deduster after reconstruction is not obvious, the waste of funds and equipment is caused to a certain extent, and some enterprises have ultralow emission, but the emission concentration is expected to be further reduced and the emission concentration is autonomously controllable due to the consideration of autonomous emission reduction.
The technical problems existing in the prior art are therefore: for enterprises with dust removal facilities approaching standard emission, the conventional reconstruction measures are too complex, the investment is too high, and the technical measures of simplicity, easiness in implementation and flexibility in control are lacked.
The above information disclosed in the background section is only for enhancement of understanding of the background of the disclosure and therefore it may include information that does not form the prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
The utility model aims to provide a device which is arranged at the outlet of a dust remover and is matched with the dust remover to operate, so that the dust removal efficiency of a dust removal system is improved, and the discharge concentration can be flexibly adjusted, so as to solve the defects in the technology.
In order to achieve the above object, the present utility model provides the following technical solutions: the secondary purification device comprises a dust remover, an ash conveyer, a dust removing fan, a smoke dust on-line monitor and a chimney, wherein the output end of an ash hopper at the bottom of the dust remover is connected with the input end of the ash conveyer, the output end of the dust removing fan is connected with the input end of the chimney, the smoke dust on-line monitor is arranged on the chimney to detect smoke dust in the chimney, the secondary purification device is arranged between the dust removing fan and the dust remover, the input end of the secondary purification device is connected with the output end of the dust remover, and the output end of the secondary purification device is connected with the input end of the dust removing fan;
the secondary purification device comprises an outer shell, a flue gas inlet is formed in one side of the outer shell, a flue gas outlet is formed in the other side of the outer shell, a plurality of cathodes and anodes distributed at equal intervals are arranged in the outer shell, an ash removing device is arranged at the top of the inner cavity, a power supply is arranged at the top of the inner cavity, an ash bucket is arranged at the bottom of the inner cavity, an ash discharging port is arranged at the bottom of the ash bucket, the ash discharging port is connected with an input end of an ash conveyer through a pipeline, the cathodes and the anodes are electrically connected with the power supply, the flue gas outlet is connected with the input end of a dust removing fan through a pipeline, and the ash removing device is arranged as a mechanical vibrator.
Preferably, the plurality of cathodes and the plurality of anodes are spaced from each other by a distance of 20 to 80mm, and the plurality of cathodes and the plurality of anodes are combined to form the gas channel.
Preferably, the anodes are metal surfaces parallel or symmetrical to each other, and the cross-sectional shape includes rectangular, circular or polygonal.
Preferably, a valve is arranged in the middle of a pipeline connected between the output end of the dust remover and the flue gas inlet and in the middle of a pipeline connected between the flue gas outlet and the input end of the dust removing fan.
Preferably, the secondary purification device is arranged in a plurality, and the input end and the output end of the secondary purification device are respectively connected with the dust remover and the dust removal fan through the multi-way pipe.
In the technical scheme, the utility model has the technical effects and advantages that:
1. the existing dust remover is not required to be modified, so that the dust remover is more convenient to implement, and meanwhile, the investment is saved. In addition, the device adopts a low-voltage power supply to supply power, has low running power consumption, and simultaneously shows energy-saving significance when reaching the standard of environmental protection;
2. through setting up different dust collection subregion operation quantity, can nimble regulation and control smoke and dust emission concentration, under the prerequisite that satisfies the environmental protection standard, secondary purification device can partly collect dust subregion operation, has embodied energy-conserving meaning simultaneously.
3. The adoption of the device not only avoids the large-scale reconstruction of the original dust remover and the investment waste, but also can accurately adjust and control the emission concentration. The technology has the dual value of environmental protection and investment economy.
Drawings
For a clearer description of embodiments of the present application or of the solutions in the prior art, the drawings that are needed in the embodiments will be briefly described, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and that other drawings can be obtained according to these drawings by a person having ordinary skill in the art.
FIG. 1 is a top plan view of a secondary purification device of the present utility model;
FIG. 2 is an installed elevation view of the secondary purifying device of the present utility model;
FIG. 3 is a block diagram of a secondary purifying apparatus according to the present utility model;
FIG. 4 isbase:Sub>A first view of the A-A section of the present utility model;
FIG. 5 isbase:Sub>A second view of the A-A section of the present utility model;
FIG. 6 isbase:Sub>A third view of the A-A section of the present utility model;
FIG. 7 is a schematic view of section B-B of the present utility model;
FIG. 8 is a first view of a cathode form of the present utility model;
fig. 9 is a second view of the cathode form of the present utility model.
Reference numerals illustrate:
1. a dust remover; 2. an ash conveyer; 3. a secondary purifying device; 301. a flue gas inlet; 302. an outer housing; 303. an anode; 304. a cathode; 305. an ash removal device; 306. a flue gas outlet; 307. an ash bucket; 308. an ash discharge port; 309. a power supply; 4. a valve; 5. a dust removal fan; 6. a chimney; 7. smoke on-line monitor.
Detailed Description
In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
The utility model provides a secondary purification device for flue gas at the outlet of a dust remover, which is shown in figures 1-9, and comprises a dust remover 1, an ash conveyer 2, a dust removing fan 5, a smoke dust on-line monitor 7 and a chimney 6, wherein the output end of an ash hopper 307 at the bottom of the dust remover 1 is connected with the input end of the ash conveyer 2, the output end of the dust removing fan 5 is connected with the input end of the chimney 6, the smoke dust on-line monitor 7 is arranged on the chimney 6 to detect smoke dust in the chimney 6, a secondary purification device 3 is arranged between the dust removing fan 5 and the dust remover 1, the input end of the secondary purification device 3 is connected with the output end of the dust remover 1, and the output end of the secondary purification device 3 is connected with the input end of the dust removing fan 5;
the secondary purification device 3 comprises an outer shell 302 which is similar to the whole shell of the dust remover 1, one side of the outer shell 302 is provided with a flue gas inlet 301, the other side is provided with a flue gas outlet 306, a plurality of cathodes 304 and anodes 303 which are distributed at equal intervals are arranged in the outer shell, an ash removing device 305 is arranged at the top of an inner cavity, a power supply 309 is arranged at the top of the inner cavity, an ash bucket 307 is arranged at the bottom of the inner cavity, an ash discharging port 308 is arranged at the bottom of the ash bucket 307, the ash discharging port 308 is connected with the input end of the ash conveyer 2 through a pipeline, the cathodes 304 and the anodes 303 are electrically connected with the power supply 309, the flue gas outlet 306 is connected with the input end of the dust removing fan 5 through a pipeline, and the ash removing device 305 is arranged as a mechanical vibrator;
the secondary purification device 3 is a closed cavity, dust-containing flue gas is purified in the device, a flue gas inlet 301 of the secondary purification device is connected with an outlet of the dust remover 1, a flue gas outlet 306 of the secondary purification device is connected with the dust removing fan 4, and an ash discharge port 308 of the secondary purification device is connected with the ash conveyor 2.
The flue gas enters the secondary purification device 3 along the flue gas inlet 301, a series of gas channels formed by the anode 303 and the cathode 304 are arranged in the device, the device is powered by the power supply 309, an atmosphere with static electricity is formed in a plurality of channels between the anode 303 and the cathode 304, and the flue gas is filtered by the front-end dust remover and then enters the secondary purification device, so that the flue gas has low dust concentration and small dust particle size, the anode 303 and the cathode 304 can adopt a smaller electrode distance design, the dust particles are charged and adsorbed on the polar plates when passing through an electric field, the trapping efficiency is high, the flue gas is filtered and purified, and the flue gas is discharged from the flue gas outlet 306. In practice, the pole pitch may be designed to be 20mm-80mm, in which case the power supply 309 may use a lower operating voltage.
The internal space where the anode 303 and the cathode 304 of each secondary purification device 3 are located forms a dust collection partition, and each secondary purification device 3 can be controlled independently. The effect of designing multiple partitions is that: according to the change of the inlet flue gas concentration, the number of the dust collection partitions is selected, and then the smoke dust concentration of the outlet of the secondary purification device 3 is adjusted. In addition, during actual operation, a certain dust collection partition can be independently off-line, and overhauling or ash cleaning can be performed on the dust collection partition without affecting the operation of other partitions.
Figure 5 shows only 3 dust collection zones, arranged in parallel along the flue gas flow direction, each passing only a portion of the flue gas. The dust collection partition can be any number according to engineering requirements.
The secondary purification device 3 continuously works, dust particles are continuously adsorbed, the top of the anode 303 and the top of the cathode 304 are provided with a dust removing device 305, when a certain dust collection partition is started to remove dust, the valve 4 on a smoke inlet and outlet pipeline of the partition is closed first, then the dust removing device 305 is started, at the moment, dust on the anode and the cathode is shaken off and falls into a dust hopper 307, and dust is discharged to the dust conveyer 2 through the valve 4 on the dust conveying pipeline and is discharged in a concentrated mode. The specific implementation mode of the ash removing device 305 can be a mechanical vibrator, compressed gas disturbance blowing and the like.
The cathode 304 may take a variety of forms, such as a plurality of discrete discharge pins or racks, etc., as shown in fig. 8 and 9.
The device is applicable to different types of dust collectors, and the difference is only limited by the difference of the number, dust collection area and external dimension of the cathode and anode inside the secondary purification device when the concentration of smoke dust at the outlet of the dust collector is different.
Application example: dust removing system for industrial furnace with smoke amount of 12 x 10 4 m 3 And/h, adopting a pulse bag type dust collector, and displaying the smoke emission concentration of 6-13mg/m by a smoke on-line monitor 3 Range fluctuation, certain periods of time exceed ultra low emission standards by 10mg/m 3 Is not limited. Because the dust remover is built earlier, the equipment is carried mark and is reformed transform and have the degree of difficulty. The device is arranged at the outlet of the dust remover by adopting the reconstruction measure of additionally arranging a secondary flue gas purifying device, and is designed according to 4 parallel dust collection partitions, the polar distance is 30mm, and the working voltage of the device is 380V.
When all 4 dust collection partitions are put into operation, the smoke dust on-line monitor shows that the smoke dust emission concentration is obviously reduced and is stabilized at 3-8mg/m 3 The range meets the requirements of ultra-low emission limit and 95% time period standard rate.
When the discharge concentration is 3-5mg/m in a certain period 3 When the device is in operation, only 2 or 3 dust collection partitions can be put into operation, so that the power consumption of the device is reduced, and the electric energy is saved. By setting different dust collection partition operation quantity, the smoke emission concentration can be flexibly adjusted and controlled.
While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.
The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;
secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;
the previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein;
finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (5)
1. The utility model provides a dust remover export flue gas secondary purification device, includes dust remover (1), ash conveyor (2), dust removal fan (5), smoke and dust on-line monitoring appearance (7) and chimney (6), the output of dust remover (1) bottom ash bucket (307) is connected with the input of ash conveyor (2), and the output of dust removal fan (5) is connected with the input of chimney (6), and smoke and dust on-line monitoring appearance (7) are installed and are detected the smoke and dust in chimney (6) on chimney (6), its characterized in that: a secondary purification device (3) is arranged between the dust removal fan (5) and the dust remover (1), the input end of the secondary purification device (3) is connected with the output end of the dust remover (1), and the output end of the secondary purification device (3) is connected with the input end of the dust removal fan (5);
the secondary purification device (3) comprises an outer shell (302), a flue gas inlet (301) is formed in one side of the outer shell (302), a flue gas outlet (306) is formed in the other side of the outer shell, a plurality of cathodes (304) and anodes (303) which are distributed at equal intervals are arranged in the outer shell, a dust removing device (305) is arranged at the top of an inner cavity, a power supply (309) is arranged at the top of the inner cavity, a dust hopper (307) is arranged at the bottom of the inner cavity, a dust discharging port (308) is arranged at the bottom of the dust hopper (307), the dust discharging port (308) is connected with the input end of the dust conveyer (2) through a pipeline, the cathodes (304) are electrically connected with a power supply (309), and the flue gas outlet (306) is connected with the input end of a dust removing fan (5) through a pipeline, and the dust removing device (305) is arranged as a mechanical vibrator.
2. The secondary purification device for flue gas at the outlet of a dust remover according to claim 1, wherein: the distance between the cathodes (304) and the anodes (303) is 20-80mm, and the cathodes (304) and the anodes (303) are combined to form a gas channel.
3. The secondary purification device for flue gas at the outlet of a dust remover according to claim 1, wherein: the anodes (303) are metal surfaces which are parallel or symmetrical to each other, and the cross-sectional shape comprises a rectangle, a circle or a polygon.
4. The secondary purification device for flue gas at the outlet of a dust remover according to claim 1, wherein: the middle part of a pipeline connected between the output end of the dust remover (1) and the flue gas inlet (301) and the middle part of a pipeline connected between the flue gas outlet (306) and the input end of the dust removing fan (5) are provided with valves (4).
5. The secondary purification device for flue gas at the outlet of a dust remover according to claim 1, wherein: the secondary purification device (3) is arranged in a plurality, and the input end and the output end of the secondary purification device (3) are respectively connected with the dust remover (1) and the dust removal fan (5) through a multi-way pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222911275.3U CN218890686U (en) | 2022-11-02 | 2022-11-02 | Secondary purification device for outlet flue gas of dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222911275.3U CN218890686U (en) | 2022-11-02 | 2022-11-02 | Secondary purification device for outlet flue gas of dust remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218890686U true CN218890686U (en) | 2023-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222911275.3U Active CN218890686U (en) | 2022-11-02 | 2022-11-02 | Secondary purification device for outlet flue gas of dust remover |
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| CN (1) | CN218890686U (en) |
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- 2022-11-02 CN CN202222911275.3U patent/CN218890686U/en active Active
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