Charge electromagnetic composite field condensation device

Abstract

The invention discloses a charged electromagnetic composite field coagulation device, comprising a pipeline for transmitting dust gas, wherein the pipeline is provided with a group of charged mechanisms at both sides of the dust gas flow direction, each group of charged mechanisms comprises a high-voltage corona electrode and a grounding electrode arranged in sequence toward the center of the pipeline, the two high-voltage corona electrodes are respectively connected with high-voltage alternating current of opposite phase and the same frequency, a first passage is formed between the high-voltage corona electrode and the grounding electrode of each group of charged mechanisms, a second passage is formed between the grounding electrodes of the two groups of charged mechanisms, the grounding electrodes comprise a plurality of holes, a magnetic field is further arranged between the two high-voltage corona electrodes, and the magnetic lines of induction of the magnetic field are parallel to the electric field directions of the two groups of charged mechanisms. Compared with conventional charged coagulation devices, the present invention has a smaller volume, can effectively improve the charge depletion effect, and the magneto-electric coagulation improves the coagulation efficiency and reduces the energy consumption.

Description

Technical Field

[0001] The invention relates to the field of dust removal, in particular to a charged electromagnetic composite field condensation device. Background Art

[0002] In haze weather, inhalable particulate matter is the main pollutant, namely PM2.5. PM2.5 refers to particles with a particle size of less than or equal to 2.5. Compared with larger particles, PM2.5 is more active and has a smaller particle size. It generally carries harmful and toxic substances (such as bacteria, viruses, etc.), and moves a long distance in the atmosphere and stays for a long time, so it has a greater impact on air quality and human health. Due to the small particle size of fine particles (PM10, PM2.5), it is more difficult to remove. An effective solution is to change the particle size distribution of dust particles in the air through a charge-coagulation device, so that fine particles adhere to large particles or fine particles adhere to each other so that they can be condensed into large particles, so that they can be more easily separated and removed from the air.

[0003] Existing particle coagulation technology generally includes chemical coagulation technology, acoustic coagulation technology, electric field coagulation technology, turbulent coagulation technology, etc., among which the electric field coagulation technology has a relatively high coagulation efficiency. At present, there is a dust charge coagulation device realized by using electric field coagulation technology in the prior art, which mainly includes a pipeline for gas to pass through, and a charging mechanism and an electric field coagulation mechanism are sequentially arranged in the pipeline along the gas flow direction, wherein the charging mechanism includes a positive high-voltage corona electrode, a negative high-voltage corona electrode and a grounding electrode, based on the principle that the positive high-voltage corona electrode emits positive ions toward the grounding electrode when energized, and the negative high-voltage corona electrode emits negative ions toward the grounding electrode when energized, so that dust particles are partly positively charged when passing through the charging mechanism, and partly negatively charged, to form charged particles of opposite polarity. When these charged particles of opposite polarity pass through the electric field coagulation mechanism, they move in the opposite direction under the action of the electric field force, and then can collide with each other and condense to form large particles.

[0004] The existing charge coagulation device has the following defects:

[0005] 1) The charging mechanism and the condensing mechanism operate independently, and the gas needs to pass through the charging device and the condensing device in sequence for charging and condensing, which makes the entire charging and condensing device bulky and occupies a lot of space;

[0006] 2) After charged particles of opposite polarities collide and condense with each other, the charges they carry will be neutralized, resulting in a charge depletion effect, which is not conducive to subsequent dust removal.

[0007] 3) Electric field coagulation consumes a lot of electrical energy, and the coagulation efficiency needs to be further improved. Summary of the invention

[0008] In view of the deficiencies of the prior art, the present invention provides a charge-electromagnetic composite field coagulation device which has a smaller volume, higher coagulation efficiency and can effectively improve the charge depletion effect.

[0009] In order to achieve the above-mentioned object, the present invention provides a charged electromagnetic composite field coagulation device, comprising a pipeline for transmitting dust gas, wherein a group of charging mechanisms are respectively arranged at both sides of the pipeline in the flow direction of the dust gas, each group of charging mechanisms includes a high-voltage corona electrode and a grounding electrode arranged in sequence toward the center direction of the pipeline, the two high-voltage corona electrodes are respectively connected to high-voltage alternating currents with opposite phases and the same frequency, a first passage is formed between the high-voltage corona electrode and the grounding electrode of each group of charging mechanisms, a second passage is formed between the grounding electrodes of the two groups of charging mechanisms, the grounding electrode includes a plurality of holes for positive and negative ions and oppositely polar charged particles to pass between the first passage and the second passage, a magnetic field is also arranged between the two high-voltage corona electrodes, and the magnetic flux lines of the magnetic field are parallel to the electric field directions of the two groups of charging mechanisms.

[0010] The beneficial effect of the present invention is that the present invention combines the charging part and the coagulation part in the traditional charged coagulation device together, thereby reducing the overall volume of the charged coagulation device. When the two high-voltage corona electrodes are supplied with high-voltage alternating current of opposite phase and the same frequency, positive and negative ions can be continuously and alternately generated. A part of the ions are attached to the dust particles flowing through the first passage in the process of moving toward the grounding electrode, and the other part of the ions will pass through the holes of the grounding electrode into the second passage and attach to the dust particles flowing through the second passage. These charged particles with opposite polarities with positive and negative charges make reverse spiral motion under the combined action of the magnetic field Lorentz force and the electric field force, and then can collide with each other and coagulate into dust particles with large particle size, thereby improving the coagulation efficiency of the dust particles. Since the charging and coagulation of the dust particles are carried out simultaneously, the dust particles after treatment are still attached with electric charges, and no recharging is required in the subsequent dust removal process, which is convenient for subsequent dust removal.

[0011] Furthermore, the high-voltage corona electrode comprises a high-voltage electrode plate and a plurality of thorns evenly distributed on the high-voltage electrode plate, and the hole of the grounding electrode is arranged at a position aligned with the thorns.

[0012] The advantage brought by the further arrangement is that when high voltage alternating current is passed through the high voltage plate, a corona discharge effect will be generated at the tip of the thorn. Since the hole of the grounding electrode is arranged at a position aligned with the thorn, some ions generated during the corona discharge can pass through the hole and enter the second path.

[0013] Furthermore, the thorns and holes of the two groups of charging mechanisms are arranged to be aligned with each other.

[0014] The advantage of further configuration is that the positive and negative ions can move to a greater distance, thereby improving the charging effect.

[0015] Furthermore, the grounding electrode includes two parallel supporting rods and a plurality of connecting rods connected between the two supporting rods, the plurality of connecting rods are evenly distributed along both ends of the supporting rods, and the holes are formed by the plurality of connecting rods being spaced apart from each other.

[0016] The advantages brought about by the further arrangement are: making the structure of the grounding electrode simpler and convenient for processing and manufacturing, and fence-like holes can be formed between the multiple connecting rods between the two support rods, with larger pores, so that positive and negative ions and oppositely charged particles can pass through the holes more easily, thereby facilitating the charging of dust particles in the second passage and facilitating the collision and coagulation of oppositely charged particles. At the same time, the fence-like holes also have a certain turbulent effect, which can improve the coagulation effect.

[0017] Furthermore, the connecting rod is perpendicular to the gas flow direction in the pipeline.

[0018] The advantage brought by the further configuration is that the spoiler effect can be further improved.

[0019] Furthermore, the magnetic field is formed between two permanent magnets.

[0020] The advantage brought by the further arrangement is that the magnetic field is provided by permanent magnets, no electric energy is consumed, energy consumption can be saved, and the use cost can be reduced.

[0021] Furthermore, the two permanent magnets are respectively arranged on the side of the two high-voltage corona electrodes facing away from the ground electrode.

[0022] The advantage brought by the further arrangement is that the permanent magnet is not easy to interfere with the corona, thereby improving the stability of the charge coagulation process.

[0023] Furthermore, the high voltage plate is made of brass.

[0024] The advantages of further configuration are: brass has better electrical conductivity, and since brass is a non-magnetic material, magnetic flux lines can pass through them unimpeded and will not affect the magnetic field.

[0025] Furthermore, the thorns are made of stainless steel.

[0026] The advantages brought by the further configuration are: the stainless steel material has the advantages of being rust-resistant and corrosion-resistant, and can also improve the corona generation effect.

[0027] Furthermore, the grounding electrode is made of stainless steel.

[0028] The advantages brought by the further arrangement are: the stainless steel material has the advantages of being rust-resistant and corrosion-resistant. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a structural diagram of an embodiment of the present invention;

[0030] Figure 2 A side view of an embodiment of the present invention;

[0031] Figure 3 A top view of an embodiment of the present invention;

[0032] Figure 4 A side view of another embodiment of the present invention;

[0033] Figure 5 The diagram is a schematic diagram of the movement principle of charged particles in the magneto-electric composite field in the present invention. DETAILED DESCRIPTION

[0034] The embodiment of the electromagnetic composite field coagulation device of the present invention is as follows: Figure 1-3As shown: it includes a pipeline 1 for transmitting dust gas, and the two ends of the pipeline 1 respectively include an inlet 11 and an outlet 12. The dust gas can enter the pipeline 1 along the inlet 11 and flow out from the outlet 12. The cross-section of the pipeline 1 in the width direction is rectangular, but in other examples, it can also be other polygons or circles. The pipeline 1 is provided with a group of charging mechanisms at both sides of the dust gas flow direction. The two groups of charging mechanisms are preferably fixedly arranged at two opposite inner side walls (13, 14) of the pipeline 1. Such an arrangement is used for charging. The mechanism has a certain hiding and shielding effect, and improves the aesthetics. Each group of charging mechanisms includes a high-voltage corona electrode 21 and a grounding electrode 22 arranged in sequence toward the center direction of the pipeline 1. The high-voltage corona electrodes 21 and the grounding electrodes 22 of the two groups of charging mechanisms are arranged along the same straight line direction. The high-voltage corona electrode 21 can produce a corona effect when high-voltage electricity is applied, and the positive or negative ions generated by the corona effect can move toward the grounding electrode 22 under the attraction of the grounding electrode 22. The two high-voltage corona electrodes 21 are respectively passed with high-voltage alternating currents of opposite phase and the same frequency, and the high-voltage current is It can be provided by two high-voltage reverse-phase AC power supplies 3 respectively connected to the two charging mechanisms, a first passage 41 is formed between the high-voltage corona electrode 21 and the ground electrode 22 of each group of charging mechanisms, and a second passage 42 is formed between the ground electrodes 22 of the two groups of charging mechanisms. When the dust gas passes through the pipeline 1, it will flow through the first passage 41 and the second passage 42 at the same time. The ground electrode 22 includes a plurality of holes 221 for positive and negative ions and oppositely charged particles to pass between the first passage 41 and the second passage 42. The two high-voltage corona electrodes A magnetic field is also arranged between 21, and the magnetic flux lines a of the magnetic field are parallel to the electric field directions of the two groups of charging mechanisms. In this embodiment, the magnetic flux lines a are parallel to the arrangement directions of the high-voltage corona electrodes 21 and the grounding electrodes 22 in the two groups of charging mechanisms. The setting of the second passage 42 can increase the flow rate of the dust gas. Powering the two charging mechanisms with the two high-voltage reverse AC power supplies can not only generate bipolar corona and charge the dust particles with opposite polarities, but also form an AC electric field between the two high-voltage plates 211 to promote the charging and coagulation of the dust particles.

[0035] When the two high-voltage corona electrodes 21 are connected to high-voltage alternating current with opposite phase and the same frequency, positive and negative ions can be continuously and alternately generated. A part of the ions are attached to the dust particles flowing through the first passage 41 during the process of moving toward the ground electrode 22, and another part of the ions will pass through the holes of the ground electrode 22 into the second passage 42 and attach to the dust particles flowing through the second passage 42. These charged particles with opposite polarity and positive and negative charges perform anti-phase spiral motion under the combined effect of the magnetic field Lorentz force and the electric field force, and then can collide with each other and condense into dust particles with large particle size, thereby improving the condensation efficiency of the dust particles. Since the charging and condensation of the dust particles are carried out simultaneously, the dust particles after condensation are still attached with electric charge, and there is no need to re-charge in the subsequent dust removal process, which is convenient for subsequent dust removal.

[0036] The high-voltage corona electrode 21 includes a high-voltage plate 211 and a plurality of thorns 212 evenly distributed on the high-voltage plate 211. The thorns 212 are preferably evenly arranged along the length and width of the high-voltage plate 211. The thorns 212 are preferably tapered at least at their ends to improve the corona effect.

[0037] The hole 221 of the grounding electrode 22 is arranged at a position aligned with the tip of the thorn 212, so that the positive and negative ions generated at the tip of the thorn 212 can better pass through the hole 221 and enter the second passage 42. The thorns 212 and holes 221 of the two sets of charging mechanisms are arranged to be aligned with each other, so that some positive and negative ions that are not attached to the dust particles can move to a farther distance, thereby improving the charging effect. Since the ion wind generated during the corona effect is generally divergent, and the overall direction is toward the grounding electrode, in order to enable the ions to better pass through the hole 221, the aperture size of the hole 221 can be reasonably configured according to the use effect during actual implementation.

[0038] Described ground electrode 22 includes two support rods 222 that are arranged in parallel and a plurality of connecting rods 223 that are connected between two support rods 222, described a plurality of connecting rods 223 are evenly distributed along the two end directions of support rod 222, described hole 221 is formed by being spaced apart from each other between a plurality of connecting rods 223, the hole 221 between these connecting rods 223 is a fence-like structure, these holes 221 can produce a turbulent flow effect to the opposite polarity charged particles when they move along pipeline 1, and can improve the condensation effect. Described two support rods 222 are arranged at the position corresponding to the upper and lower sides of high-voltage corona electrode 21, can improve the coverage area between ground electrode 22 and high-voltage corona electrode 21, thereby can improve charging and condensation efficiency, described connecting rod 223 is preferably perpendicular to the dust gas flow direction in pipeline 1, can further improve the turbulent flow effect.

[0039] The grounding electrode 22 is preferably made of stainless steel, which has the advantages of being rust-resistant and corrosion-resistant.

[0040] The magnetic field can be provided by an electromagnet, but in order to reduce energy consumption and cost, it is preferably provided by two permanent magnets 5. The two permanent magnets 5 arranged at intervals can interact with each other and form a magnetic field. The magnetic poles facing each other of the two permanent magnets 5 are opposite magnetic poles. The permanent magnet 5 preferably adopts a strong neodymium iron boron magnet, which has a longer service life and stronger magnetic force. The single permanent magnet 5 can be integrally formed or composed of multiple small sub-permanent magnets.

[0041] In order to further reduce the volume and the interference to the high-voltage corona, the two permanent magnets 5 are respectively arranged on the side of the two high-voltage corona electrodes 21 facing away from the ground electrode 22, and the permanent magnet 5 is arranged between the adjacent high-voltage corona electrode 21 and the inner wall of the pipeline 1.

[0042] The high-voltage pole plate 211 is preferably made of brass, which has better electrical conductivity and is a non-magnetic material. The magnetic flux lines of the two permanent magnets 5 located on the back of the two high-voltage pole plates 211 can pass through the high-voltage pole plates 211 without any obstruction and will not affect the magnetic field.

[0043] The thorn 212 is preferably made of stainless steel, which can improve the corona effect and is not easy to rust after long-term use. The root of the thorn 212 is directly connected and fixed to the high-voltage plate 211 by welding.

[0044] In actual implementation, when the voltage of the high-voltage reverse-phase AC power supply is set to 20-120KV, the frequency is 20-100Hz, the distance between the high-voltage corona electrode 21 and the corresponding grounding electrode 22 is 60-300mm, the distance between the two corresponding grounding electrodes 22 is also 60-300mm, and the length of the thorn 212 is 4-8mm, the flow rate of the dust gas that can be processed can reach 5-20m / s.

[0045] Another embodiment of the present invention is as follows Figure 4 As shown, the main difference between it and the above-mentioned embodiment is that the two high-voltage plates 211 and the permanent magnet 5 are both arranged on the outer walls of both sides of the pipeline 1, and the high-voltage plates 211 and the permanent magnet 5 can be installed, fixed and protected by the shell 6 fixed on the outer wall of the pipeline 1. It is convenient to repair, replace and maintain them by arranging them on the outer wall of the pipeline 1, and it is not easy to affect the gas flow of the pipeline 1. Of course, when it is arranged on the outer wall of the pipeline 1, the tip of the thorn 212 passes through the pipe wall and is placed on the inside of the pipe to facilitate the charging effect. The material of the shell 6 and the pipeline 1 is preferably a non-conductive and non-magnetic material, and the magnetic flux of the permanent magnet 5 can also pass through the pipe wall.

[0046] The motion principle of the oppositely charged particles in the magneto-electric composite field in the above embodiment is as follows: Figure 5As shown: the direction of the magnetic field and the direction of the electric field are parallel. In the direction perpendicular to the magnetic field, the charged particles are acted on by the Lorentz force to perform uniform circular motion. The Lorentz force is perpendicular to the direction of uniform circular motion. In the direction parallel to the electric field, the charged particles are acted on by the electric field force to perform variable speed linear motion. Under the combined effect, the movement of the charged particles presents a spiral motion.

[0047] The above embodiment is for reference only and represents a special example of the present invention. Other methods based on the description of the present invention belong to the scope of protection of the present invention.

Claims

1. A charged electromagnetic composite field condensation device, comprising a pipeline for transmitting dust gas, characterized in that: The pipeline is provided with a group of charging mechanisms at both sides of the dust gas flow direction, each group of charging mechanisms includes a high-voltage corona electrode and a grounding electrode arranged in sequence toward the center direction of the pipeline, the two high-voltage corona electrodes are respectively connected to high-voltage alternating currents of opposite phase and the same frequency, a first passage is formed between the high-voltage corona electrode and the grounding electrode of each group of charging mechanisms, and a second passage is formed between the grounding electrodes of the two groups of charging mechanisms, the grounding electrode includes a plurality of holes for positive and negative ions and oppositely polar charged particles to pass between the first passage and the second passage, a magnetic field is also arranged between the two high-voltage corona electrodes, and the magnetic flux lines of the magnetic field are parallel to the electric field directions of the two groups of charging mechanisms; the high-voltage corona electrode includes a high-voltage plate and a plurality of thorns evenly distributed on the high-voltage plate, and the hole of the grounding electrode is arranged at a position aligned with the thorn; the grounding electrode includes two parallel supporting rods and a plurality of connecting rods connected between the two supporting rods, the plurality of connecting rods are evenly distributed along the two end directions of the supporting rods, and the holes are formed by the plurality of connecting rods being spaced apart from each other.

2. The charged electromagnetic composite field coagulation device according to claim 1, characterized in that: The thorns and holes of the two sets of charging mechanisms are arranged in alignment with each other.

3. The charged electromagnetic composite field coagulation device according to claim 1, characterized in that: The connecting rod is perpendicular to the gas flow direction in the pipeline.

4. The charged electromagnetic composite field coagulation device according to claim 1, characterized in that: The magnetic field is formed between two permanent magnets.

5. The charged electromagnetic composite field coagulation device according to claim 4, characterized in that: The two permanent magnets are respectively arranged on one side of the two high-voltage corona electrodes facing away from the ground electrode.

6. The charged electromagnetic composite field coagulation device according to claim 1, characterized in that: The high voltage plate is made of brass.

7. The charged electromagnetic composite field coagulation device according to claim 1 or 2, characterized in that: The thorns are made of stainless steel.

8. The charged electromagnetic composite field coagulation device according to any one of claims 1 to 6, characterized in that: The grounding electrode is made of stainless steel.

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