CN212236529U - Flue gas processing apparatus based on sound wave is reunited - Google Patents
Flue gas processing apparatus based on sound wave is reunited Download PDFInfo
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- CN212236529U CN212236529U CN202020221949.5U CN202020221949U CN212236529U CN 212236529 U CN212236529 U CN 212236529U CN 202020221949 U CN202020221949 U CN 202020221949U CN 212236529 U CN212236529 U CN 212236529U
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Abstract
The utility model discloses a flue gas processing apparatus based on sound wave is reunited, include: the inlet of the sound wave agglomeration chamber is connected with a dust-containing flue gas inlet flue, and the outlet of the sound wave agglomeration chamber is connected with a dust remover through a connecting flue; the sound source system is at least partially arranged in the sound wave agglomeration chamber; and the atomizing nozzle is arranged between the tail end of the flue of the dust-containing flue gas inlet and the sound wave agglomeration chamber and is used for spraying water mist to the dust-containing flue gas. Compared with the prior conventional dust removal technology, the utility model has good dust removal effect, and the removal rate of PM2.5 reaches more than 80%; the structural design is simple and reasonable, and the agglomeration effect is better; the air source is convenient to obtain and the economic cost is low.
Description
Technical Field
The utility model belongs to the technical field of coal fired boiler discharges flue gas and handles in the industry, especially, relate to a flue gas processing apparatus based on sound wave reunion.
Background
Dividing atmospheric particulates into total suspended particulates, inhalable particulates and ultrafine particulates according to the aerodynamic equivalent diameter, wherein the total suspended particulates refer to all particulates with the particle size of less than 100 microns, the inhalable particulates refer to particulates with the particle size of less than 10 microns and can be represented by PM10, and the inhalable particulates with the particle size range of 2.5-10 microns are referred to as coarse particles and are represented as PM 2.5-10; inhalable particles with a particle size range smaller than 2.5 μm are called fine particles, denoted as PM 2.5.
The existing dust removal devices comprise electric dust removal and cloth bag dust removal, the total dust removal efficiency of the dust removal devices can reach more than 99%, but the dust removal capability of the dust removal devices to PM2.5 is seriously insufficient, and smoke gas still contains a large amount of inhalable particles after being treated by a dust remover. The total number of the fine particles can reach more than 90 percent of the total number of the fly ash particles, which is the reason why most cities suffer PM2.5 particle pollution under the condition that the total smoke dust emission amount in the atmosphere of China reaches the standard.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides a to fine particles thing in the flue gas, get rid of effectually, the simple effectual flue gas processing apparatus based on sound wave reunion of treatment.
The utility model provides a technical scheme that its technical problem adopted is: a flue gas treatment device based on acoustic agglomeration comprises:
the inlet of the sound wave agglomeration chamber is connected with a dust-containing flue gas inlet flue, and the outlet of the sound wave agglomeration chamber is connected with a dust remover through a connecting flue;
the sound source system is at least partially arranged in the sound wave agglomeration chamber;
and the atomizing nozzle is arranged between the tail end of the flue of the dust-containing flue gas inlet and the sound wave agglomeration chamber and is used for spraying water mist to the dust-containing flue gas.
The utility model discloses reunite the sound wave and atomizing nozzle's combination, carried out effectual reunion to the tiny granule in the flue gas, reached more than 80% to PM 2.5's the effect of getting rid of.
Furthermore, a conical flaring section is arranged between the dust-containing flue gas inlet flue and the sound wave agglomeration chamber, and the atomizing nozzle is arranged on the inclined side wall of the conical flaring section. The conical flaring section and the conical necking section increase the flow area of the sound wave agglomeration chamber, reduce the flow velocity of the flue gas and ensure the retention time of the flue gas in the sound wave agglomeration chamber.
Furthermore, the water mist spraying direction of the atomizing nozzle is vertical to the flowing direction of the flue gas in the dust-containing flue gas inlet flue.
Furthermore, the sound source system comprises an air source, a buffer tank connected with the air source and used for stabilizing the pressure, and a plurality of sound source components positioned in the sound wave reunion chamber. The buffer tank can ensure that the output air pressure of the air source is stable and effective, thereby ensuring the sound production effect of the sound production source piece.
Furthermore, the sound emitting source part comprises a first sound emitting source part arranged along the direction perpendicular to the flowing direction of the smoke, and a second sound emitting source part arranged along the direction parallel to the flowing direction of the smoke. The first sound emitting source and the second sound emitting source are matched for use, so that the time and space of sound wave action are increased, the sound wave agglomeration efficiency is improved, and the dust removal effect is ensured.
Further, the air source is compressed air. The compressed air is a common air source in the coal-fired boiler industry, the air source is convenient to obtain, and the economic cost is low.
Furthermore, the sound generating power of the sound generating source is 1-10kw, and the sound generating frequency is 0.5-3 kHz.
Further, the atomizing nozzle is connected with a storage tank for storing the agglomerating agent.
Further, the outer wall of the sound wave agglomeration chamber is coated with a sound attenuation layer.
Further, the device also comprises a switch unit for controlling the starting number of the sound-emitting source members. The opening number of the sound emitting source pieces can be adjusted in time according to the agglomeration efficiency, the agglomeration efficiency is convenient to adjust, and the final agglomeration effect is ensured.
The utility model has the advantages that: 1) the dust removal effect is good, compared with the conventional dust removal technology, the utility model can remove PM2.5 by more than 80%; 2) the structure design is simple and reasonable, the first sound-emitting source part and the second sound-emitting source part are matched for use, the time and the space of sound wave agglomeration are increased, and the agglomeration effect is better; 3) the compressed air is adopted as a sound source, so that the electric sounding frequency and the sound pressure level are more stable and the efficiency is higher than those of the conventional electric sounding, the material of the air source is convenient to obtain, and the economic cost is low; 4) the sound is little influence of the environment, and the safety performance is high; 5) the structure of the sound wave reunion chamber is optimized, the arrangement and the position selection are reasonable, the effect is good, and the original structure is not required to be greatly changed.
Drawings
Fig. 1 is a first perspective view of the present invention.
Fig. 2 is a second perspective view of the present invention.
Fig. 3 is a schematic flow chart of the present invention.
Fig. 4 is a front view of the present invention.
Fig. 5 is a top view of the present invention.
Fig. 6 is a side view of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
As shown in fig. 1-6, a flue gas treatment device based on acoustic agglomeration comprises an acoustic agglomeration chamber 1, an acoustic source system 5 and an atomizing nozzle 6; the inlet of the sound wave agglomeration chamber 1 is connected with a dust-containing flue gas inlet flue 2, the outlet of the sound wave agglomeration chamber 1 is connected with one end of a connecting flue 3, and the other end of the connecting flue 3 is connected with a dust remover 4.
The concept of acoustic agglomeration is to utilize specially designed high-intensity acoustic waves to treat fine particles (aerosol), so that collision agglomeration occurs among the particles, the number concentration of the final particles is reduced, and the average particle size is increased. In order to ensure that the smoke has enough residence time of 3-7 seconds in the sound wave agglomeration chamber 1, so as to ensure that the smoke can obtain enough time to carry out sound wave agglomeration. And calculating the flow area of the sound wave agglomeration chamber 1 according to the amount of the flue gas, reducing the flow velocity of the flue gas in the sound wave agglomeration chamber 1, and ensuring the retention time of the flue gas.
The sound wave agglomeration chamber 1 is connected with the dust-containing flue gas inlet flue 2 through a conical flaring section 71, the sound wave agglomeration chamber 1 is connected with the connecting flue 3 through a conical necking section 72, and the flow area of the sound wave agglomeration chamber 1 is greatly increased through the design of the conical flaring section 71 and the conical necking section 72, so that the flow velocity of flue gas is reduced;
the inclined side wall of the conical flaring section 71 is provided with a plurality of atomizing nozzles 6, the atomizing nozzles 6 need to be arranged at specific positions according to flow field simulation calculation results, so that the atomizing nozzles 6 and the flue gas are uniformly mixed to the maximum extent, the atomizing nozzles 6 are used for spraying water mist to the dust-containing flue gas, and in order to ensure that the water mist and the flue gas are uniformly mixed, the water mist spraying direction of the atomizing nozzles 6 is perpendicular to the flow direction of the flue gas in the dust-containing flue gas inlet flue 2.
The water smoke that erupts in the atomizing nozzle 6 has the agglomerant, and this agglomerant can be one or more combination among polyferric sulfate (PFS), carrageenan (KC), Polyacrylamide (PAM), xanthan gum (XTG), prepares the solution with water, evenly spouts the sound wave after mixing solution and compressed air through the atomizing nozzle and reunites the indoor 1 in to improve reunion efficiency, the atomizing nozzle is prior art, no longer gives unnecessary details.
In order to continuously spray the water mist, the plurality of atomizing nozzles 6 are connected to the storage tank 8 through a pipeline, and the agglomerating agent solution stored in the storage tank 8 is conveyed to the plurality of atomizing nozzles 6 through the conveying pump 81.
A plurality of sound source systems 5 are distributed on the sound wave agglomeration chamber 1, and each sound source system 5 comprises an air source 53, a buffer tank 54 and a plurality of sound source parts 55; in order to ensure that sound waves can fully act on smoke and ensure the agglomeration efficiency of sound wave clusters on fine particles, the sound-generating source part 55 comprises a first sound-generating source part 551 arranged along the direction perpendicular to the flow direction of the smoke and a second sound-generating source part 552 arranged along the direction parallel to the flow direction of the smoke, as shown in fig. 1, four first sound-generating source parts 551 and four second sound-generating source parts 552 are respectively arranged on two side walls of the sound wave agglomeration chamber 1 in parallel at intervals, and in other embodiments, the arrangement mode can be any mode such as alternate arrangement or the like; of course, the sound emitting source member 55 may further include a third sound emitting source member, and the specific number is not limited; the first and second sound emitting elements 551 and 552 have the same structure.
In this embodiment, the air source 53 is compressed air or an air compressor, and since compressed air (with a pressure of 0.4-0.6MPa) is common in the coal-fired boiler industry, compressed air is used as the air source 53, which is very convenient and low in economic cost, and compressed air ensures that the sound source 55 has high power and is stable, the agglomeration effect is good, and in addition, the layout is simple and reasonable, so that the arrangement of the sound source 55 is facilitated, and only the compressed air is guided to the position of the sound source 55.
If the air compressor is not equipped with compressed air, the air compressor is selected; in order to stabilize the output air pressure, a buffer tank 54 is connected between the air source 53 and the sound-generating source 55, compressed air is introduced into the buffer tank 54, and the buffer tank 54 is used for stabilizing the pressure and ensuring the stability of the air pressure, namely ensuring the stability of the sound-generating source 55; the buffer tank 54 leads out one or more compressed air main pipes 541 to each sound generating source part 55 of the sound wave agglomeration chamber 1 according to the requirement, and the pressure of the compressed air main pipe 541 is between 0.4 and 0.6 MPa.
The sound-generating power of the sound-generating source 55 is basically 1-10kw, the sound-generating frequency is 0.5-3kHz, which is a low frequency, and the sound pressure level is about 150 db.
Because the sound pressure level of the sound source part 55 is at high decibel, the outer wall of the sound wave reunion chamber 1 is wrapped by a silencing layer which can be a smoke-eliminating sponge, thereby greatly reducing the decibel value of sound and reducing the influence of the sound on the environment.
A switch unit for controlling the starting number of the sound source systems 5 can be further arranged, and specifically, the switch unit comprises an agglomeration efficiency measuring instrument positioned in the sound wave agglomeration chamber 1, a first pneumatic quick-closing valve connected with the first sound source part 551, a second pneumatic quick-closing valve connected with the second sound source part 552 and an adjusting system; first pneumatic fast valve is opened to initial condition for first sound source spare 551 opens and carries out the sound production, it does not reach the predetermined value to detect the reunion efficiency of sound wave reunion room 1 when reunion efficiency measuring apparatu, then governing system opens the pneumatic fast valve of second, make second sound source spare 552 also open and carry out the sound production, make first sound source spare 551 and second sound source spare 552 to come into use simultaneously, in order to improve reunion efficiency, above-mentioned reunion efficiency measuring apparatu function, the governing system function can be realized for prior art, no longer give unnecessary details.
The above detailed description is provided for illustrative purposes, and is not intended to limit the present invention, and any modifications and variations of the present invention are within the spirit and scope of the following claims.
Claims (10)
1. A flue gas treatment device based on sound wave agglomeration is characterized by comprising:
the inlet of the sound wave agglomeration chamber (1) is connected with a dust-containing flue gas inlet flue (2), and the outlet of the sound wave agglomeration chamber is connected with a dust remover (4) through a connecting flue (3);
the sound source system (5) is at least partially arranged in the sound wave agglomeration chamber (1);
and the atomizing nozzle (6) is arranged between the tail end of the dust-containing flue gas inlet flue (2) and the sound wave agglomeration chamber (1) and is used for spraying water mist to the dust-containing flue gas.
2. The flue gas treatment device based on acoustic agglomeration according to claim 1, wherein: a conical flaring section (71) is arranged between the dust-containing flue gas inlet flue (2) and the sound wave agglomeration chamber (1), and the atomizing nozzle (6) is arranged on the inclined side wall of the conical flaring section (71).
3. The flue gas treatment device based on acoustic agglomeration according to claim 2, wherein: the water mist spraying direction of the atomizing nozzle (6) is vertical to the flowing direction of the flue gas in the dust-containing flue gas inlet flue (2).
4. The flue gas treatment device based on acoustic agglomeration according to claim 1, wherein: the sound source system (5) comprises an air source (53), a buffer tank (54) connected with the air source (53) and used for stabilizing pressure, and a plurality of sound source components (55) positioned in the sound wave agglomeration chamber (1).
5. The flue gas treatment device based on acoustic agglomeration according to claim 4, wherein: the sound emitting member (55) includes a first sound emitting member (551) arranged in a direction perpendicular to a flow direction of the smoke, and a second sound emitting member (552) arranged in a direction parallel to the flow direction of the smoke.
6. The flue gas treatment device based on acoustic agglomeration according to claim 4, wherein: the air source (53) is compressed air.
7. The flue gas treatment device based on acoustic agglomeration according to claim 4, wherein: the sound generating power of the sound generating source part (55) is 1-10kw, and the sound generating frequency is 0.5-3 kHz.
8. The flue gas treatment device based on acoustic agglomeration according to claim 1, wherein: the atomizing nozzle (6) is connected with a storage tank (8) for storing the agglomeration agent.
9. The flue gas treatment device based on acoustic agglomeration according to claim 1, wherein: the outer wall of the sound wave reunion chamber (1) is coated with a sound attenuation layer.
10. The flue gas treatment device based on acoustic agglomeration according to claim 1, wherein: and the system also comprises a switch unit for controlling the starting number of the sound source system (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020221949.5U CN212236529U (en) | 2020-02-27 | 2020-02-27 | Flue gas processing apparatus based on sound wave is reunited |
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| CN202020221949.5U CN212236529U (en) | 2020-02-27 | 2020-02-27 | Flue gas processing apparatus based on sound wave is reunited |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114159918A (en) * | 2021-12-09 | 2022-03-11 | 武汉钢铁有限公司 | Converter primary flue gas fine particle sound wave agglomeration efficient dust removal system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114159918A (en) * | 2021-12-09 | 2022-03-11 | 武汉钢铁有限公司 | Converter primary flue gas fine particle sound wave agglomeration efficient dust removal system |
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