CN109395884B - Be applied to exhaust purification advanced treatment's device - Google Patents
Be applied to exhaust purification advanced treatment's device Download PDFInfo
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- CN109395884B CN109395884B CN201811253649.9A CN201811253649A CN109395884B CN 109395884 B CN109395884 B CN 109395884B CN 201811253649 A CN201811253649 A CN 201811253649A CN 109395884 B CN109395884 B CN 109395884B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/16—Plant or installations having external electricity supply wet type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/49—Collecting-electrodes tubular
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/66—Applications of electricity supply techniques
- B03C3/68—Control systems therefor
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention relates to a device applied to advanced treatment of waste gas purification, which relates to the technical field of fine particle purification, and has low dust removal efficiency due to the existing waste gas dust removal device. The scheme comprises an anode electrode tube used for connecting the anode of an external power supply or grounding, and a cathode electrode mesh tube which is positioned in the anode electrode tube and used for connecting the cathode of the external power supply, wherein the upper end of the cathode electrode mesh tube is closed, the lower end of the cathode electrode mesh tube is provided with an air inlet tube, and the upper end of the air inlet tube penetrates into the lower end of the cathode electrode mesh tube in a clearance way; the lower end opening of the anode electrode tube is arranged, and the upper end of the anode electrode tube is connected with an air outlet tube. In the process that the waste gas passes through the negative electrode mesh pipe, the negative electrode mesh pipe can intercept particles in the waste gas, then an electric field between the negative electrode mesh pipe and the positive electrode tube can generate electrons, the electrons can adhere to dust and move to the positive electrode tube, and the dust removal efficiency is improved through the two procedures.
Description
Technical Field
The invention relates to the technical field of fine particle purification, in particular to a device applied to deep treatment of waste gas purification.
Background
Atmospheric environmental pollution is becoming more and more the problem of people's concern, and the national degree of attention to atmospheric environment is also higher and higher, constantly improves the standard of corresponding environmental protection law, and especially to the emission requirement of power plant extremely strict, require to reach the ultra-clean emission. The absorption and purification of smoke and dust in the exhaust emission of power plants is also an extremely important part.
The existing power plant is usually additionally provided with an electrostatic dust removal device after the desulfurizing tower so as to reduce dust particles in the waste gas. But the existing electrostatic dust removal device is often low in dust removal efficiency.
Disclosure of Invention
The invention aims to provide a device applied to the purification advanced treatment of waste gas, which has higher smoke purification effect and obvious effect on the purification and separation of fine particles.
The above object of the present invention is achieved by the following technical solutions:
a device applied to the advanced treatment of waste gas purification comprises an anode electrode tube used for connecting the anode of an external power supply or grounding, and a cathode electrode mesh tube which is positioned in the anode electrode tube and used for connecting the cathode of the external power supply, wherein the anode electrode tube and the cathode electrode mesh tube are arranged in parallel, the upper end of the cathode electrode mesh tube is arranged in a closed manner, the lower end of the cathode electrode mesh tube is provided with an air inlet tube, and a gap at the upper end of the air inlet tube penetrates into the lower end of the cathode electrode mesh tube; the lower end opening of the anode electrode tube is arranged, and the upper end of the anode electrode tube is connected with an air outlet tube.
By adopting the technical scheme, the air inlet pipe can be communicated to the air outlet end of the desulfurizing tower. Mainly comprises two steps of dust removal, wherein the second step is as follows: the positive electrode tube and the negative electrode mesh tube jointly form a strong electric field, and continuously ionize gas between the positive electrode tube and the negative electrode mesh tube, so that electrons are generated, and the electrons move towards the positive electrode tube. At the moment, the ultrafine particles and the fog drops in the negative electrode mesh pipe pass through the negative electrode mesh pipe and further reach between the positive electrode and the negative electrode mesh pipe, electrons can be attached to the surfaces of the particles and the liquid drops in the waste gas and drive the particles and the liquid drops to move towards the positive electrode mesh pipe, so that the particles and the liquid drops are attached to the inner wall of the positive electrode mesh pipe, and the liquid drops drive the particles to flow downwards and separate from the inner wall of the positive electrode mesh pipe as the liquid drops gather more and more. Through the process, most of the micro particles in the waste gas can be separated.
The first step is as follows: when the waste gas passes through the negative electrode mesh pipe, the negative electrode mesh pipe can isolate large-particle dust in the negative electrode mesh pipe, so that the waste gas is pretreated firstly, and the dust removal burden of the second step is reduced.
It is worth to be noted that, when the electric field intensity between the anode electrode tube and the cathode electrode tube is constant, the total amount of electrons generated in unit time is also constant, and since the volume and the mass of the large-particle dust are both large, the number of electrons required for transporting the large-particle dust needs to be larger, which may cause that the number of electrons generated in unit time is not enough to transport most of the dust (including the large-particle dust and the small-particle dust) to the anode electrode tube, that is, the separation and dust removal efficiency is not high. In the scheme, through two-step dust removal, large-particle dust can be isolated on the wall of the negative electrode mesh pipe, so that the dust entering between the positive electrode tube and the negative electrode mesh pipe tends to be small particles, and the dust which can be conveyed to the positive electrode tube in unit time is larger and more thorough in the same electric field intensity. And finally, the dust removal efficiency can be improved.
And moreover, the negative electrode mesh tube can directly charge the particles and liquid drops in the waste gas, namely, part of electrons are transferred to the particles and the liquid drops, and finally, the particles and the liquid drops which are attached with the electrons can more directly and more quickly reach the inner wall of the positive electrode tube, so that the particle separation efficiency is improved.
The invention is further configured to: the box body is also included, the anode electrode tube and the cathode electrode mesh tube are arranged in the box body, a plurality of anode electrode tubes and cathode electrode mesh tubes are arranged in the box body, and the anode electrode tubes and the cathode electrode mesh tubes are in one-to-one correspondence.
By adopting the technical scheme, the box bodies are arranged outside the anode electrode tube and the cathode electrode mesh tube, so that the anode electrode tube and the cathode electrode mesh tube can be protected, and meanwhile, dust separated from each group of anode electrode tube and cathode electrode mesh tube can be conveniently collected in a centralized manner.
The invention is further configured to: the box body is connected with a cleaning main pipe, the peripheral wall of the cleaning main pipe is connected with a plurality of groups of spray heads, each group of spray heads corresponds to one anode electrode pipe, and the spray heads are positioned in the air outlet pipes and aligned to the anode electrode pipes.
Through adopting above-mentioned technical scheme, the shower nozzle can spray positive electrode tube to improve the efficiency that the dust breaks away from positive electrode tube, because the dust is attached to on the positive electrode tube inner wall, can lead to the electric field to be weakened, and above-mentioned setting can reduce the degree that the electric field is weakened.
The invention is further configured to: and a sound source part is arranged at the top of the box body.
By adopting the technical scheme, the sound source part can form sound wave soot blowing to remove dust adhered to the pipe wall of the anode electrode pipe and the pipe wall of the cathode electrode pipe network, so that the efficiency of separating the dust from the anode electrode pipe or the cathode electrode pipe network is improved, the electric field is weakened when the dust is adhered to the inner wall of the anode electrode pipe or the pipe wall of the cathode electrode pipe network, and the arrangement can reduce the degree of weakening the electric field.
The invention is further configured to: and the box body is provided with an adjusting circuit for controlling the electric field intensity between the anode electrode tube and the cathode electrode tube according to the concentration of particulate matters in the air outlet tube or the air inlet tube.
Through adopting above-mentioned technical scheme, when the particulate matter concentration of outlet duct and intake pipe department is on the large side, but regulating circuit control power to control the electric field intensity between anodal electrode pipe and the negative pole electrode network management, make it strengthen, thereby the improvement particulate matter separation rate of adaptability prevents that the outlet duct from continuously discharging the waste gas that particulate matter concentration is on the high side. Namely, through the arrangement, the particle separation speed is adaptively adjusted by the adjusting circuit, so that the exhaust gas with higher particle concentration is prevented from being continuously discharged by the exhaust pipe.
In conclusion, the beneficial technical effects of the invention are as follows:
1. the smoke dust purification effect of the scheme is higher, and the effect of purifying and separating fine particles is very obvious;
2. the adjustable circuit in this scheme is the regulation particulate matter separation speed of adaptability to prevent that the outlet duct from continuously discharging the waste gas that particulate matter concentration is on the high side.
Drawings
Fig. 1 is a schematic structural diagram of the first embodiment.
Fig. 2 is a schematic structural diagram of the second embodiment.
Fig. 3 is a block diagram of a regulating circuit in the third embodiment.
In the figure, 1, an outer tube; 11. a feeding port; 12. a valve; 2. a positive electrode tube; 3. a negative electrode mesh tube; 31. an air inlet pipe; 32. an air outlet pipe; 33. a main air inlet pipe; 34. an air outlet main pipe; 4. cleaning the main pipe; 41. a spray head; 5. a regulating circuit; 51. a detection module; 52. and a control module.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows: referring to fig. 1, the apparatus for advanced purification treatment of waste gas disclosed by the present invention comprises a tank 1, wherein an inlet main pipe 33 and an outlet main pipe 34 are connected in the tank 1, the inlet main pipe 33 is located below the outlet main pipe 34, and the inlet main pipe 33 can be communicated to an outlet end of a desulfurization tower to receive waste gas.
Two groups of anode tubes 2 and cathode tube nets 3 are arranged in the box body 1, each group comprises an anode tube 2 which is vertically arranged and a cathode tube net 3 which is vertically arranged, the cathode tube net 3 is positioned in the anode tube 2, and the anode tubes 2 and the cathode tube net 3 are coaxially arranged. The anode electrode tube 2 is used for grounding, and the cathode electrode network tube 3 is used for connecting the cathode of an external power supply. A strong electric field can be formed between the positive electrode tube 2 and the negative electrode mesh tube 3 and ionizes the air in the space to form electrons for transporting the dust to the inner wall of the positive electrode tube 2.
The upper end of the negative electrode mesh pipe 3 is closed, the lower end of the negative electrode mesh pipe is provided with a vertically arranged air inlet pipe 31, the upper end of the air inlet pipe 31 penetrates into the negative electrode mesh pipe 3 in a clearance mode, and the lower end of the air inlet pipe 31 is communicated with the air inlet main pipe 33. The dust and liquid droplets adhered to the inner wall of the cathode electrode mesh tube 3 may flow down from the gap between the cathode electrode mesh tube 3 and the air inlet tube 31. The upper end and the lower end of the anode electrode tube 2 are both provided with openings, the upper end of the anode electrode tube 2 is communicated with an air outlet tube 32, and the upper end of the air outlet tube 32 is communicated with the inside of an air inlet and outlet mother tube 34.
The waste gas can enter the air inlet pipe 31 from the air inlet main pipe 33, pass through the negative electrode mesh pipe 3, enter a gap between the negative electrode mesh pipe 3 and the positive electrode tube 2, rise into the air outlet pipe 32, finally converge in the air outlet main pipe 34 and be discharged.
The box body is penetrated with a cleaning main pipe 4, two groups of spray heads 41 are connected to the peripheral wall of the cleaning main pipe 4, each group of spray heads 41 corresponds to one anode electrode tube 2, the spray heads 41 are positioned in the air outlet pipe 32 and aligned to the anode electrode tubes 2, two spray heads 41 are arranged in each group, and the spray heads 41 can spray and clean the inner wall of the anode electrode tube 2.
The specific implementation principle is as follows: mainly comprises two steps of dust removal, wherein the second step is as follows: the anode electrode tube 2 and the cathode electrode mesh tube 3 jointly form a strong electric field, and continuously ionize gas between the anode electrode tube 2 and the cathode electrode mesh tube 3, so that electrons are generated, and the electrons move towards the anode electrode tube 2. At this time, the ultrafine particles and the fog drops in the negative electrode mesh tube 3 pass through the negative electrode mesh tube 3 and reach between the positive electrode tube 2 and the negative electrode mesh tube 3, electrons can be attached to the surfaces of the particles and the liquid drops in the waste gas and drive the particles and the liquid drops to move towards the positive electrode tube 2, so that the particles and the liquid drops are attached to the inner wall of the positive electrode tube 2, and the liquid drops drive the particles to flow downwards and separate from the inner wall of the positive electrode tube 2 as the liquid drops are more and more gathered. Through the process, most of the micro particles in the waste gas can be separated.
The first step is as follows: when the waste gas passes through the negative electrode mesh pipe 3, the negative electrode mesh pipe 3 can isolate large-particle dust inside the negative electrode mesh pipe 3, so that the waste gas is pretreated first, and the dust removal burden of the second step is reduced.
It is worth to be noted that, when the electric field intensity between the anode electrode tube 2 and the cathode electrode mesh tube 3 is constant, the total amount of electrons generated in unit time is also constant, and since the volume and the mass of the large-particle dust are both large, the amount of electrons required for transporting the large-particle dust needs to be larger, which may cause that the amount of electrons generated in unit time is not enough to transport most of the dust (including the large-particle dust and the small-particle dust) to the anode electrode tube 2, that is, the separation and dust removal efficiency is not high. In the scheme, large-particle dust can be isolated on the wall of the negative electrode mesh pipe 3 by two steps of dust removal, so that the dust entering between the positive electrode tube 2 and the negative electrode mesh pipe 3 tends to be small in particle size, and the dust which can be conveyed to the positive electrode tube 2 in unit time is larger and more thorough in amount under the same electric field intensity. And finally, the dust removal efficiency can be improved.
In addition, the negative electrode mesh tube 3 can directly charge the particles and liquid drops in the waste gas, namely, part of electrons are transferred to the particles and the liquid drops, and finally, the particles and the liquid drops which are attached with the electrons can more directly and more rapidly reach the inner wall of the positive electrode tube 2, so that the particle separation efficiency is improved.
Second embodiment, referring to fig. 2, the difference from the first embodiment is that the cleaning main pipe 4 and the spray head 41 (see fig. 1) are not provided, and the sound source 13 is installed on the top of the case 1, and the sound source 13 can generate sound wave soot blowing to remove dust adhered to the pipe walls of the positive electrode pipe 2 and the negative electrode mesh pipe 3, thereby improving the efficiency of dust separation from the positive electrode pipe 2 or the negative electrode mesh pipe 3, because the dust adhered to the inner wall of the positive electrode pipe 2 or the pipe wall of the negative electrode mesh pipe 3 can weaken the electric field, and the above arrangement can reduce the degree of electric field weakening.
The specific implementation principle is as follows: the same as the first embodiment, but the second embodiment replaces the spraying dust discharging manner with the sound wave dust blowing manner, so as to better discharge the dust adhered to the inner wall of the anode electrode tube 2 and the cathode electrode mesh tube 3.
Example three: referring to fig. 2 and 3, the difference from the second embodiment is that an adjusting circuit 5 is additionally provided, and the adjusting circuit 5 is used for controlling the electric field intensity between the positive electrode tube 2 and the negative electrode tube 3 according to the concentration of the particulate matter in the air outlet tube 32 or the air inlet tube 31.
When the concentration of the particulate matters at the air outlet pipe 32 and the air inlet pipe 31 is larger, the adjusting circuit 5 can control the power supply to control the electric field intensity between the anode electrode tube 2 and the cathode electrode mesh tube 3 to be stronger, so that the particulate matter separation speed is improved adaptively, and the air outlet pipe 32 is prevented from continuously discharging the waste gas with higher particulate matter concentration. That is, with the above arrangement, the particulate matter separation speed is adaptively adjusted by the adjusting circuit 5 to prevent the outlet duct 32 from continuously discharging the exhaust gas having a relatively high particulate matter concentration.
The adjusting circuit 5 comprises a detection module 51 and a control module 52, wherein the detection module 51 is a particulate matter concentration sensor and is used for detecting the particulate matter concentration at the air pipe 32 and the air inlet pipe 31 and outputting a concentration detection value. The control module 52 is coupled to the detection module 51 and receives the concentration detection value, so as to control the external power supply according to the concentration detection value, so as to adjust the electric field intensity between the anode electrode tube 2 and the cathode electrode tube 3.
The specific implementation principle is as follows: the second embodiment is the same as the second embodiment, wherein the additional content includes that the adjusting circuit 5 is provided, and the adjusting circuit 5 can adaptively adjust the particulate matter separation speed to prevent the air outlet pipe 32 from continuously discharging the exhaust gas with higher particulate matter concentration.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (4)
1. The utility model provides a be applied to exhaust purification advanced treatment's device which characterized in that: the cathode electrode comprises an anode electrode tube (2) used for connecting the anode of an external power supply or grounding and a cathode electrode mesh tube (3) located in the anode electrode tube (2) and used for connecting the cathode of the external power supply, wherein the anode electrode tube (2) and the cathode electrode mesh tube (3) are arranged in parallel, the upper end of the cathode electrode mesh tube (3) is arranged in a closed manner, an air inlet tube (31) is arranged at the lower end of the cathode electrode mesh tube (3), and the upper end of the air inlet tube (31) penetrates into the lower end of the cathode electrode mesh tube (3) in a clearance manner; the lower end of the anode electrode tube (2) is provided with an opening, and the upper end of the anode electrode tube (2) is connected with an air outlet tube (32);
the box body (1) is further included, the anode electrode tubes (2) and the cathode electrode mesh tubes (3) are installed in the box body (1), the anode electrode tubes (2) and the cathode electrode mesh tubes (3) in the box body (1) are respectively provided with a plurality of anode electrode tubes, and the anode electrode tubes (2) correspond to the cathode electrode mesh tubes (3) one by one.
2. The device applied to the advanced treatment of the purification of the exhaust gas according to claim 1, wherein: the cleaning box is characterized in that a cleaning main pipe (4) is connected onto the box body (1), a plurality of groups of spray heads (41) are connected onto the peripheral wall of the cleaning main pipe (4), each group of spray heads (41) corresponds to one anode electrode pipe (2), and the spray heads (41) are located in the air outlet pipe (32) and aligned to the anode electrode pipes (2).
3. The device applied to the advanced treatment of the purification of the exhaust gas according to claim 2, wherein: a sound source piece (13) is installed at the top of the box body (1).
4. The device applied to the advanced treatment of the purification of the exhaust gas according to claim 1, wherein: the box body (1) is provided with an adjusting circuit (5) for controlling the electric field intensity between the anode electrode tube (2) and the cathode electrode network tube (3) according to the concentration of particles in the air outlet tube (32) or the air inlet tube (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811253649.9A CN109395884B (en) | 2018-10-25 | 2018-10-25 | Be applied to exhaust purification advanced treatment's device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811253649.9A CN109395884B (en) | 2018-10-25 | 2018-10-25 | Be applied to exhaust purification advanced treatment's device |
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| Publication Number | Publication Date |
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| CN109395884A CN109395884A (en) | 2019-03-01 |
| CN109395884B true CN109395884B (en) | 2020-11-10 |
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| CN201811253649.9A Active CN109395884B (en) | 2018-10-25 | 2018-10-25 | Be applied to exhaust purification advanced treatment's device |
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| CN109395884A (en) | 2019-03-01 |
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