Discharge electrode, and gas particle purification unit and device, and use thereof

Abstract

The present invention provides a discharge electrode, and a gas particle purification unit and device, and a use thereof. The discharge electrode is used for discharging when a voltage is applied thereto, and is characterized in that the discharge electrode comprises an electrode rod and at least one discharge bundle assembly, wherein the discharge bundle assembly comprises a plurality of discharge bundles arranged circumferentially on the electrode rod, and each discharge bundle comprises a plurality of metal wires and / or conductive non-metal wires. In one discharge bundle assembly, the plurality of discharge bundles are uniformly arranged around the same circumference of the electrode rod. The discharge bundle assembly comprises 1 to 15 discharge bundles. On the electrode rod, 3 to 21 discharge bundle assemblies are arranged per meter. The gas particle purification unit provided by the present invention comprises the discharge electrode.

Description

Discharge electrode and gas particle purification unit, device and application thereof Technical Field

[0001] The present invention belongs to the technical field of gas purification, and in particular relates to a discharge electrode and a gas particle purification unit, a device and applications thereof. Background Art

[0002] As people's environmental awareness grows, the recognition and demand for purification of pollutants in air gases (including but not limited to flue gas, dust, VOCs and engine exhaust) are also increasing. Therefore, more and better purification technologies are gradually being installed and used in vehicles, factories, and home environments. Among these purification technologies, electrostatic dust removal and adsorption technology is very commonly used. The principle of electrostatic dust removal and adsorption technology is that the gas is ionized when passing through the electrostatic field. After the particles in the gas combine with the charged ions, they tend to move to the electrode with the opposite polarity of the charged ions and deposit. It can be seen that the particle removal rate is related to the charging efficiency of the particles. The core electrostatic field is mostly composed of an adsorption plate and a cathode wire (discharge electrode) arranged in the adsorption plate. Therefore, the technology of the adsorption plate and the discharge electrode has become the key to improving the particle removal rate. Summary of the Invention

[0003] The present invention provides a discharge electrode and a gas particle purification unit, a device and applications thereof.

[0004] To achieve the above-mentioned and other related purposes, the present invention provides the following technical solutions:

[0005] In a first aspect, the present invention provides a discharge electrode for discharging after voltage is applied thereto. The discharge electrode comprises an electrode rod and at least one discharge beam assembly, wherein the discharge beam assembly comprises a plurality of discharge beams circumferentially arranged on the electrode rod; the discharge beam comprises a plurality of metal wires and / or conductive non-metallic wires.

[0006] Furthermore, in the discharge electrode provided by the present invention, a plurality of discharge beams in one discharge beam assembly are evenly arranged in the same circumferential direction around the electrode rod.

[0007] Furthermore, in the discharge electrode provided by the present invention, one end of the multiple metal wires and / or non-metal wires of the discharge beam is fixed together to form a fixed end, and the other end is a free end, and the fixed end of the discharge beam is fixed to the electrode rod.

[0008] Furthermore, in the discharge electrode provided by the present invention, the fixed ends of the multiple discharge beams in one discharge beam assembly are fixed on the same circumferential direction of the electrode rod and are evenly arranged.

[0009] Furthermore, in the discharge electrode provided by the present invention, the discharge beam assembly includes 1-15 discharge beams.

[0010] Furthermore, the discharge beam assembly includes 1-3 discharge beams.

[0011] Furthermore, in the discharge electrode provided by the present invention, 3-21 discharge beam assemblies are provided per meter on the electrode rod. Furthermore, 3-7 discharge beam assemblies are provided per meter on the electrode rod.

[0012] Furthermore, in the discharge electrode provided by the present invention, the discharge beam in the discharge beam assembly is arranged at a certain angle to the axis of the electrode rod. Preferably, the discharge beam is arranged at 90° to the axis of the electrode rod.

[0013] Furthermore, the discharge beam is provided on at least one end portion of the electrode rod of the discharge beam, and the discharge beam is provided parallel to the axis of the electrode rod.

[0014] Furthermore, the present invention provides a discharge electrode, wherein the discharge beam is composed of 10,000 to 80,000 metal wires and / or conductive non-metal wires.

[0015] Preferably, the conductive non-metallic wire is a carbon fiber wire. Preferably, the metal wire is a stainless steel fiber wire.

[0016] Furthermore, the present invention provides a discharge electrode, wherein the discharge beam comprises a plurality of rare earth tungsten fiber filaments.

[0017] Preferably, the diameter of the rare earth tungsten fiber is less than 900 μm.

[0018] Preferably, the discharge beam includes 100-100,000 rare earth tungsten fiber filaments.

[0019] Preferably, the material of the rare earth tungsten fiber includes one or more of lanthanum tungsten, yttrium tungsten, zirconium tungsten, cerium tungsten, and thoriated tungsten.

[0020] Furthermore, the discharge beam includes n metal wires and / or conductive non-metal wires, wherein n is greater than or equal to 10,000.

[0021] Furthermore, the diameter of the metal wire is in the range of 0.1-100 um; or the diameter of the conductive non-metal wire is in the range of 0.1-100 um.

[0022] Furthermore, the present invention provides a discharge electrode, wherein the discharge beam includes 10,000 to 200,000 metal wires and / or conductive non-metal wires; preferably, includes 10,000 to 80,000 metal wires and / or conductive non-metal wires.

[0023] Furthermore, in the discharge electrode provided by the present invention, the metal wire comprises at least one of stainless steel fiber wire, titanium-chromium-aluminum alloy wire, titanium alloy wire, and nickel alloy wire; preferably, the single fiber diameter of the stainless steel fiber wire is in the range of 5-100um.

[0024] Furthermore, in the discharge electrode provided by the present invention, the conductive non-metallic wire is a carbon fiber wire, and the single fiber diameter of the carbon fiber wire is in the range of 5-100 um.

[0025] In a second aspect of the present invention, a gas particle purification unit is provided for removing particulate matter from gas, wherein the particulate matter includes water droplets, dust, and viruses. The gas particle purification unit includes an adsorption electrode and a discharge electrode for generating an electric field. The adsorption electrode is a hollow tube. The discharge electrode penetrates into the adsorption electrode. The discharge electrode includes an electrode rod and a discharge beam arranged on the electrode rod, and the end of the discharge beam faces the adsorption electrode.

[0026] Furthermore, in the gas particle purification unit provided by the present invention, the electrode rod of the discharge electrode is arranged along the central axis of the adsorption electrode.

[0027] Furthermore, the present invention provides a gas particle purification unit, wherein the discharge electrode includes at least one discharge beam assembly, the discharge beam assembly includes a plurality of discharge beams circumferentially arranged on the electrode rod, and the discharge beam includes a plurality of metal wires and / or conductive non-metallic wires.

[0028] Furthermore, in the gas particle purification unit provided by the present invention, a plurality of discharge beams in one discharge beam assembly are evenly arranged in the same circumferential direction around the electrode rod.

[0029] Furthermore, the present invention provides a gas particle purification unit, wherein one end of the multiple metal wires and / or non-metal wires of the discharge beam are fixed together to form a fixed end, and the other end is a free end, and the fixed end of the discharge beam is fixed on the electrode rod.

[0030] Furthermore, in the gas particle purification unit provided by the present invention, the free end of the discharge beam faces the inner wall of the adsorption electrode.

[0031] Furthermore, in the gas particle purification unit provided by the present invention, the fixed ends of the multiple discharge beams in one discharge beam assembly are fixed on the same circumference of the electrode rod and are evenly arranged.

[0032] Furthermore, in the gas particle purification unit provided by the present invention, the discharge beam in the discharge beam assembly is arranged at a certain angle to the axis of the electrode rod. Preferably, the discharge beam is arranged at 90° to the axis of the electrode rod.

[0033] Furthermore, the discharge beam is provided on at least one end portion of the electrode rod of the discharge beam, and the discharge beam is provided parallel to the axis of the electrode rod.

[0034] Furthermore, in the gas particle purification unit provided by the present invention, the discharge beam assembly includes 1-15 discharge beams.

[0035] Furthermore, in the gas particle purification unit provided by the present invention, the discharge beam assembly includes 1-3 discharge beams.

[0036] Furthermore, in the gas particle purification unit provided by the present invention, 3-21 discharge beam assemblies are provided per meter on the electrode rod.

[0037] Furthermore, in the gas particle purification unit provided by the present invention, 3-7 discharge beam assemblies are provided per meter on the electrode rod.

[0038] Furthermore, in the gas particle purification unit provided by the present invention, the discharge beam includes a plurality of metal wires and / or conductive non-metal wires.

[0039] Furthermore, in the gas particle purification unit provided by the present invention, the discharge beam is composed of 10,000 to 80,000 metal wires and / or conductive non-metal wires.

[0040] Preferably, the conductive non-metallic wire is a carbon fiber wire. Preferably, the metal wire is a stainless steel fiber wire.

[0041] Furthermore, in the gas particle purification unit provided by the present invention, the discharge beam includes a plurality of rare earth tungsten fiber filaments.

[0042] Preferably, the diameter of the rare earth tungsten fiber is less than 900 μm.

[0043] Preferably, the discharge beam includes 100-100,000 rare earth tungsten fiber filaments.

[0044] Preferably, the material of the rare earth tungsten fiber includes one or more of lanthanum tungsten, yttrium tungsten, zirconium tungsten, cerium tungsten, and thoriated tungsten.

[0045] Furthermore, the discharge beam includes n metal wires and / or conductive non-metal wires, wherein n is greater than or equal to 10,000.

[0046] Furthermore, the diameter of the metal wire is in the range of 0.1-100 um; or the diameter of the conductive non-metal wire is in the range of 0.1-100 um.

[0047] Furthermore, in the gas particle purification unit provided by the present invention, the discharge beam includes 10,000 to 200,000 metal wires and / or conductive non-metal wires; preferably, includes 10,000 to 80,000 metal wires and / or conductive non-metal wires.

[0048] Furthermore, the gas particle purification unit provided by the present invention, wherein the metal wire includes at least one of stainless steel fiber wire, titanium-chromium-aluminum alloy wire, titanium alloy wire, and nickel alloy wire; preferably, the single fiber diameter of the stainless steel fiber wire is in the range of 5-100um.

[0049] Furthermore, in the gas particle purification unit provided by the present invention, the conductive non-metallic wire is a carbon fiber wire, and the single fiber diameter of the carbon fiber wire is in the range of 5-100 um.

[0050] Furthermore, in the gas particle purification unit provided by the present invention, the electrode rod of the discharge electrode is arranged at the center of the adsorption electrode.

[0051] Furthermore, in the gas particle purification unit provided by the present invention, the cross-section of the hollow tube is polygonal or circular, preferably, the polygon is an equilateral triangle or a regular hexagon.

[0052] Furthermore, in the gas particle purification unit provided by the present invention, the adsorption electric field is a DC electric field, and the voltage between the discharge electrode and the adsorption electrode ranges from 10,000 volts to 300,000 volts.

[0053] Furthermore, in the gas particle purification unit provided by the present invention, the adsorption electric field is a DC electric field, and the voltage between the discharge electrode and the adsorption electrode ranges from 10,000 volts to 50,000 volts.

[0054] Furthermore, in the gas particle purification unit provided by the present invention, the adsorption electric field is an alternating current electric field.

[0055] According to a third aspect of the present invention, a gas particle purification device is provided, comprising a first gas particle purification unit, the first gas particle purification unit comprising the above-mentioned gas particle purification unit, wherein the adsorption electric field formed between the discharge electrode and the adsorption electrode in the first gas particle purification unit is a DC electric field; the gas particle purification device also comprises a metal mesh adsorption unit, the metal mesh adsorption unit comprising multiple layers of metal mesh stacked together; along the gas flow direction, the metal mesh adsorption unit is located in front of the first gas particle purification unit, and there is a distance between the metal mesh adsorption unit and the first gas particle purification unit.

[0056] Furthermore, the gas particle purification device provided by the present invention also includes a second gas particle purification unit, which includes the above-mentioned gas particle purification unit, wherein the adsorption electric field formed between the discharge electrode and the adsorption electrode in the second gas particle purification unit is an AC electric field; and the second gas particle purification unit is arranged between the metal mesh adsorption unit and the first gas particle purification unit.

[0057] Furthermore, in the gas particle purification device provided by the present invention, the metal mesh adsorption unit is grounded.

[0058] In a fourth aspect of the present invention, a gas particle purification device is provided, comprising a gas particle purification unit, wherein the gas particle purification unit comprises the above-mentioned gas particle purification unit; the gas particle purification device also comprises a coarse filter, and the coarse filter is located in front of the gas particle purification unit along the gas flow direction.

[0059] Preferably, the coarse filter comprises multiple layers of metal mesh stacked together or multiple layers of non-metal mesh stacked together.

[0060] Preferably, the metal mesh is grounded.

[0061] A fifth aspect of the present invention provides application of the above-mentioned gas particle purification unit in automobile exhaust purification.

[0062] In a sixth aspect, the present invention provides application of the above-mentioned gas particle purification unit in industrial waste gas purification.

[0063] A seventh aspect of the present invention provides application of the above-mentioned gas particle purification device in automobile exhaust purification.

[0064] In an eighth aspect, the present invention provides application of the above-mentioned gas particle purification device in industrial waste gas purification.

[0065] In a ninth aspect, the present invention provides an automobile exhaust purification system, comprising the above-mentioned gas particulate purification unit or the above-mentioned gas particulate purification device.

[0066] In a tenth aspect, the present invention provides an industrial waste gas purification system, comprising the above-mentioned gas particle purification unit or the above-mentioned gas particle purification device.

[0067] Beneficial effects of the present invention

[0068] 1: The gas particle purification unit and gas particle purification device provided by the present invention are used to remove particulate matter in the gas, including but not limited to water droplets, viruses, bacteria, dust, radioactive aerosols and other pollutants. They have the characteristics of high temperature resistance and can be applied to automobile exhaust treatment, power plant exhaust purification and other applications.

[0069] 2: The discharge electrode provided by the present invention includes multiple groups of circumferentially arranged discharge beam assemblies, and the discharge beam in the discharge beam assembly includes thousands of metal wires and / or conductive non-metallic wires. The discharge beam is fixed on the discharge rod and is similar to a brush. The discharge beam adopts corona discharge, and the tip of each fiber filament at the free end is a discharge point, which significantly improves the discharge effect, increases the charge and charging efficiency of particulate matter in the gas, and effectively reduces it to almost no ozone generation.

[0070] 3: The discharge electrode provided by the present invention also has the following advantages:

[0071] Under the same purification efficiency requirements, compared with the purification device that combines an electrode rod or electrode wire with an adsorption electrode to purify particulate matter in the gas, when the discharge electrode of the present invention is combined with the same adsorption electrode, the voltage required to be applied in the present invention is much smaller than the voltage required for an electrode rod or electrode wire, which has the advantages of low energy consumption and low cost, thus effectively reducing the generation of ozone to almost no level.

[0072] Compared to installing one or more discharge beams in a single location, the discharge electrode provided by the present invention incorporates at least one discharge beam assembly on a single electrode rod. This extends the discharge length in the longitudinal direction, rapidly improving the dust removal efficiency of the purification device. Each discharge beam assembly at the same location includes multiple circumferentially distributed discharge beams. This circumferential distribution around the electrode rod ensures a higher discharge density and more uniform discharge in the transverse direction. The longitudinal and transverse extension of the discharge electrode charges more particulate matter in the gas throughout the hollow adsorption electrode space, enhancing the charging effect and, in turn, the adsorption effect, significantly improving the gas purification rate. Furthermore, this discharge electrode structural design also effectively expands the adsorption electrode area of ​​the purification device, significantly improving the adsorption purification capability.

[0073] 4: In the discharge electrode provided by the present invention, there is a case in which a discharge beam is further provided at one or both ends of the electrode rod. After voltage is applied, the discharge beam at the end generates positive ions or negative ions through corona discharge. The direction of the discharge beam is consistent with the direction of the airflow. When the gas flows through the discharge electrode, the charging efficiency of the particles in the gas can be further improved, thereby improving the gas purification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] FIG1 is a schematic structural diagram of a gas particle purification unit according to Example 1 of the present invention.

[0075] FIG2 is a schematic structural diagram of a gas particle purification unit according to Embodiment 2 of the present invention.

[0076] FIG3 is a schematic structural diagram of one of the gas particle purification devices involved in Example 4 of the present invention.

[0077] FIG4 is a schematic structural diagram of a second gas particle purification device according to Embodiment 4 of the present invention. DETAILED DESCRIPTION

[0078] The following describes the implementation of the present invention through specific embodiments. People skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0079] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for the understanding and reading of those familiar with this technology, and are not used to limit the limiting conditions that the present invention can implement. Therefore, they have no technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the efficacy and purpose that the present invention can produce. At the same time, the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like in this specification are based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0080] In the description of the embodiments of the present application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, replaceable connections, or integral connections. They can also refer to mechanical connections or electrical connections. They can also refer to direct connections or indirect connections through an intermediate medium. They can also refer to internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0081] Example 1

[0082] One embodiment of the present invention provides a gas particle purification unit for removing particulate matter from gas, including water droplets, dust, and viruses. As shown in Figure 1, the gas particle purification unit 100 includes an adsorption electrode 1 for generating an adsorption electric field and a discharge electrode 2. In the present invention, the adsorption electrode is a hollow tube with a polygonal or circular cross-section. This embodiment uses a circular shape as an example, meaning that the adsorption electrode 1 is cylindrical. A gas flow channel is formed between the adsorption electrode 1 and the discharge electrode 2, allowing gas to pass through and undergo electric field treatment.

[0083] As shown in Figure 1, the discharge electrode 2 penetrates the adsorption electrode 1 and is arranged along the central axis of the adsorption electrode 1. The discharge electrode 2 includes an electrode rod 21 and a discharge beam 22 arranged on the electrode rod 21. The end of the discharge beam 22 faces the adsorption electrode 1, and there is a certain distance between the end of the discharge beam 22 and the inner wall of the adsorption electrode 1.

[0084] In one embodiment, the adsorption electrode 1 and the discharge electrode 2 are both made of stainless steel.

[0085] In one embodiment, a discharge electrode includes an electrode rod and at least one discharge beam assembly. The discharge beam assembly includes multiple discharge beams circumferentially arranged on the electrode rod; the discharge beams include multiple metal wires and / or conductive non-metallic wires. In this embodiment, as shown in Figure 1 , the discharge electrode 2 includes four discharge beam assemblies 220. Each discharge beam assembly 220 includes three discharge beams 22 circumferentially arranged on the electrode rod 21.

[0086] In one embodiment, the multiple discharge beams in the same discharge beam assembly are evenly arranged in the same circumferential direction around the electrode rod.

[0087] In one embodiment, the discharge beam assembly includes 1-15 discharge beams, preferably 1-3, or 3-7, or 8-15, with a typical but non-limiting number of discharge beams being 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, or 15.

[0088] In one embodiment, 3-21 discharge beam assemblies are provided per meter on the electrode rod. Preferably, 3-7 discharge beam assemblies are provided per meter on the electrode rod, or 3-16 discharge beam assemblies are provided per meter on the electrode rod, or 3-18 discharge beam assemblies are provided per meter on the electrode rod, or 16-21 discharge beam assemblies are provided per meter on the electrode rod. Typical but non-limiting numbers of discharge beam assemblies provided per meter on the electrode rod are 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, or 21. It should be noted that the distances between adjacent discharge beam assemblies may be equal or unequal.

[0089] It should be noted that the length of the electrode rod, the distance between the discharge beam assemblies on the electrode rod, the number of the discharge beam assemblies, and the number of discharge beams in the discharge beam assemblies can be set according to actual needs.

[0090] In one embodiment, the discharge beam in the discharge beam assembly is arranged at a certain angle to the axis of the electrode rod. Preferably, as shown in FIG1 , the discharge beam 22 is arranged at 90° to the axis of the electrode rod 21 .

[0091] In one embodiment, one end of the multiple metal wires and / or non-metal wires of the discharge bundle 22 is fixed together to form a fixed end, and the other end is a free end. The fixed end of the discharge bundle is fixed to the electrode rod 21. In this embodiment, the fixed ends of the multiple discharge bundles 22 in a discharge bundle assembly 220 are fixed to the same circumference of the electrode rod 21 and are evenly arranged.

[0092] In the present invention, the discharge beam 22 includes multiple metal wires and / or conductive non-metallic wires (discharge material). One end of the multiple metal wires and / or non-metallic wires is fixed together to form a fixed end, and the other end is a free end. The multiple metal wires and / or non-metallic wires at the free end are in a dispersed state. The free end of the discharge beam faces the inner wall of the adsorption electrode. There is a certain distance between the free end of the discharge beam 22 and the inner wall of the adsorption electrode 1. Preferably, the distance between the free end of all discharge beams 22 and the inner wall of the adsorption electrode 1 is the same.

[0093] In the present invention, the electrode rod is made of conductive material, and the material of the electrode rod and the material of the discharge bundle can be the same or different. For example, the electrode rod is made of stainless steel, and the discharge bundle is composed of multiple stainless steel fiber filaments; or the electrode rod is made of stainless steel, and the discharge bundle is composed of multiple carbon fiber filaments.

[0094] In the present invention, multiple discharge beams are fixed on the electrode rod. Under this design, one or more discharge beams are fixed, and secondly, when the electrode rod is electrically connected to one pole of the power supply, the discharge beam is also connected to the power supply. In the case of multiple discharge beams, multiple discharge beams can be connected to one power supply at the same time, which is a simple and convenient structure.

[0095] In the present invention, at least one discharge beam assembly is provided on an electrode rod, extending the discharge length in the longitudinal direction and rapidly improving the dust removal efficiency of the purification device. Each discharge beam assembly includes multiple discharge beams distributed circumferentially. This circumferential distribution around the electrode rod ensures a higher discharge density and more uniform discharge in the lateral direction. The longitudinal and lateral extension of the discharge electrode charges more particulate matter in the gas throughout the hollow adsorption electrode space, enhancing the charging effect, thereby improving the particle adsorption effect and significantly increasing the gas purification rate. Furthermore, this discharge electrode structural design also effectively expands the adsorption electrode area of ​​the purification device, significantly improving the adsorption purification capacity.

[0096] Furthermore, the present invention provides a discharge electrode, wherein the discharge beam is composed of 10,000 to 80,000 metal wires and / or conductive non-metal wires.

[0097] Preferably, the conductive non-metallic wire is a carbon fiber wire. Preferably, the metal wire is a stainless steel fiber wire.

[0098] Furthermore, the present invention provides a discharge electrode, wherein the discharge beam comprises a plurality of rare earth tungsten fiber filaments.

[0099] In the present invention, the discharge beam includes n metal wires and / or conductive non-metallic wires, wherein n is greater than or equal to 1,000; preferably, it includes more than 5,000 metal wires and / or conductive non-metallic wires; preferably, it includes more than 10,000 metal wires and / or conductive non-metallic wires; preferably, it includes 10,000-200,000 metal wires and / or conductive non-metallic wires; preferably, it includes 10,000-80,000 metal wires and / or conductive non-metallic wires. Typical but non-limiting numbers of metal wires and / or conductive non-metallic wires are 1,000, 20,000, 30,000, 40,000, 50,000, 60,000, 80,000, 10,000, 20,000, 50,000, 150,000, 200,000, 250,000, 300,000, 400,000, or 500,000.

[0100] Through this design, a discharge bundle consisting of thousands of metal wires and / or conductive non-metallic wires is fixed to the electrode rod, resembling a brush. The discharge bundle uses corona discharge, with the tip of each free end wire serving as a discharge point, significantly improving the discharge effect and effectively reducing ozone generation to almost zero. In the present invention, testing has shown that, under the same purification efficiency requirements, when the discharge bundle of the present invention is combined with the same adsorption electrode to purify gas particulate matter, the voltage required to apply to the discharge bundle is far less than that required for a single electrode rod or electrode wire, resulting in the advantages of low energy consumption and low cost.

[0101] In the present invention, the diameter of the metal wire ranges from 0.1 to 100 μm; preferably, the diameter of the metal wire ranges from 5 to 100 μm; typical but non-limiting diameters of the metal wire are: 0.1 μm, 0.5 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 10 μm, 12 μm, 15 μm, 20 μm, 3 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm. For example, the metal wire includes, but is not limited to, at least one of stainless steel fiber wire, titanium-chromium-aluminum alloy wire, titanium alloy wire, and nickel alloy wire; the metal wire includes stainless steel fiber wire, and the single fiber diameter of the stainless steel fiber wire can range from 0.1 to 100 μm, and the single fiber diameter of the stainless steel fiber wire can range from 5 to 100 μm. The carbon content of the discharge material is 90 to 99.9%, and the typical but non-limiting carbon content is 90%, 93%, 96%, or 99%.

[0102] In the present invention, the diameter range of the conductive non-metallic wire is 0.1-100um; preferably, the diameter range of the conductive non-metallic wire is 5-100um; typical but non-limiting diameters of the conductive non-metallic wire are: 0.1um, 0.5um, 1um, 2um, 3um, 4um, 5um, 10um, 12um, 15um, 20um, 3um, 40um, 50um, 60um, 70um, 80um, 90um or 100um. For example, the conductive non-metallic wire includes but is not limited to carbon fiber wire, and the single fiber diameter of the carbon fiber wire can range from 0.1-100um; the single fiber diameter of the carbon fiber wire can range from 5-100μm, and typical but non-limiting single fiber diameters of the carbon fiber wire are: 0.1um, 0.5um, 1um, 2um, 3um, 4um, 5um, 10um, 12um, 15um, 20um, 3um, 40um, 50um, 60um, 70um, 80um, 90um or 100um.

[0103] In one embodiment of the present invention, the discharge beam comprises a plurality of rare earth tungsten fiber filaments. Preferably, the diameter of the rare earth tungsten fiber filaments is less than 900 μm. Preferably, the discharge beam comprises 100-100,000 rare earth tungsten fiber filaments. Preferably, the material of the rare earth tungsten fiber filaments comprises one or more of lanthanum tungsten, yttrium tungsten, zirconium tungsten, cerium tungsten, and thoriated tungsten.

[0104] In the present invention, the discharge beam of the discharge electrode is used to discharge after voltage is applied, so that the gas is ionized and the particulate matter in the gas is charged. As shown in Figure 1, an adsorption electric field is formed between the discharge electrode 2 and the adsorption electrode 1. In this embodiment, the adsorption electric field is a DC electric field. The adsorption electrode 1 and the discharge electrode 2 are electrically connected to the two poles of a DC power supply respectively. The voltage range between the discharge electrode 2 and the adsorption electrode 1 is 10,000 volts to 300,000 volts. Preferably, the voltage range between the discharge electrode 2 and the adsorption electrode 1 is 10,000 volts to 50,000 volts, or the voltage range between the discharge electrode 2 and the adsorption electrode 1 is 60,000 volts to 150,000 volts, or the voltage range between the discharge electrode 2 and the adsorption electrode 1 is 160,000 volts to 300,000 volts. Typical but non-limiting voltages are: 10,000 volts, 12,000 volts, 1.5 10,000 Volts, 18,000 Volts, 20,000 Volts, 22,000 Volts, 25,000 Volts, 27,000 Volts, 30,000 Volts, 32,000 Volts, 35,000 Volts, 38,000 Volts, 40,000 Volts, 42,000 Volts, 45,000 Volts, 47,000 Volts, 50,000 Volts, 60,000 Volts, 70,000 Volts, 80,000 Volts, 90,000 Volts, 100,000 Volts, 110,000 Volts, 120,000 Volts, 130,000 Volts, 140,000 Volts, 150,000 Volts, 160,000 Volts, 170,000 Volts, 180,000 Volts, 190,000 Volts, 200,000 Volts, 210,000 Volts, 220,000 Volts, 230,000 Volts, 240,000 Volts, 250,000 Volts, 260,000 Volts, 270,000 Volts, 280,000 Volts, 290,000 Volts or 300,000 Volts.

[0105] In the present invention, the gas particle purification unit is used to adsorb particulate matter in the gas, producing sterile, radiation-free, and virus-free clean gas. Gas enters the gas flow channel between the discharge electrode and the adsorption electrode. The discharge electrode discharges, ionizing the gas and charging the particulate matter. If the discharge electrode is connected to the negative pole of the power supply, and the adsorption electrode is connected to the positive pole of the power supply (the adsorption electrode can be grounded), the particulate matter becomes negatively charged during this process and is adsorbed on the adsorption electrode. The particulate matter includes, but is not limited to, contaminants such as viruses, bacteria, and radioactive aerosols. Electric field treatment removes the particulate matter and aerosols containing viruses, bacteria, and radioactive substances from the gas, producing sterile, radiation-free, and virus-free clean gas, achieving the desired gas purification effect.

[0106] In one embodiment, when processing a large flow of gas, or when the gas in the application scenario is large in area, multiple gas particle purification units 100 can be spliced ​​together for use, and the splicing methods include series connection and / or parallel connection.

[0107] Example 2

[0108] One embodiment of the present invention provides a gas particle purification unit for removing particulate matter from gas, including water droplets, dust, and viruses. As shown in Figure 2, gas particle purification unit 200 includes an adsorption electrode 1 for generating an adsorption electric field and a discharge electrode 2'. The difference between gas particle purification unit 200 in this embodiment and gas particle purification unit 100 in Example 1 is that the discharge electrode 2' further includes a discharge beam disposed on at least one end of the electrode rod, the discharge beam being arranged parallel to the axis of the electrode rod. Similarities between gas particle purification unit 200 and Example 1 are not reiterated; this embodiment only describes the differences.

[0109] In this embodiment, as shown in Figure 2, a discharge beam 22' is further provided at one end of the electrode rod 21' of the discharge beam 2'. The discharge beam 22' is arranged parallel to the axis of the electrode rod 21', and the fixed end of the discharge beam is fixed to the end of the electrode rod. The discharge beam 22' is provided at the end of the electrode rod 21' that is close to the inlet port for the gas to be treated.

[0110] In this embodiment, the structure and material of the discharge beam 22 ′ are the same as those of the discharge beam 22 in Embodiment 1, and are not described again.

[0111] In other embodiments, discharge beams parallel to the axis of the electrode rod 21 ' are provided on both ends of the electrode rod 21 '.

[0112] Through such a design, a discharge beam is set at one or both ends of the electrode rod of the discharge electrode. After voltage is applied, the discharge beam at the end generates positive ions or negative ions through corona discharge. The direction of the discharge beam is consistent with the direction of the airflow. When the gas flows through the discharge electrode, the charging efficiency of the particles in the gas can be further improved, thereby improving the gas purification efficiency.

[0113] Example 3

[0114] This embodiment provides a gas particle purification unit, which is different from the gas particle purification unit 100 provided in Example 1 in that the adsorption electric field formed between the adsorption electrode 1 and the discharge electrode 2 is an AC electric field, and the adsorption electrode 1 and the discharge electrode 2 are electrically connected to the two poles of the AC power supply respectively.

[0115] Example 4

[0116] This embodiment provides a gas particle purification unit, which is different from the gas particle purification unit 200 provided in Example 2 in that the adsorption electric field formed between the adsorption electrode 1 and the discharge electrode 2' is an AC electric field, and the adsorption electrode 1 and the discharge electrode 2' are electrically connected to the two poles of the AC power supply respectively.

[0117] Example 5

[0118] This embodiment provides a gas particle purification device, which includes a first gas particle purification unit. The first gas particle purification unit can be the gas particle purification unit 100 provided in Example 1 or the gas particle purification unit 200 provided in Example 2, wherein the adsorption electric field formed between the adsorption electrode and the discharge electrode is a DC electric field. The gas particle purification unit is not described in detail in this embodiment.

[0119] 3 , the gas particle purification device 20 further includes a metal mesh adsorption unit 21 , which includes multiple layers of metal mesh 211 stacked together. Along the gas flow direction, the metal mesh adsorption unit 21 is located in front of the first gas particle purification unit 23 , and there is a distance between the metal mesh adsorption unit 21 and the first gas particle purification unit 23 .

[0120] In this embodiment, the multi-layer metal mesh 211 may be grounded or not.

[0121] Through such a design, the metal mesh adsorption unit 21 can adsorb large particles, and the first gas particle purification unit 23 can further adsorb small particles, thereby improving the efficiency of adsorbing particles.

[0122] In one embodiment, referring to Figure 4, the gas particle purification device 20 also includes a second gas particle purification unit 24, and the second gas particle purification unit 24 includes the gas particle purification unit provided by Example 3 or Example 4, wherein the adsorption electric field formed between the adsorption electrode and the discharge electrode is an AC electric field, and the gas particle purification unit is not described in detail in this embodiment; the second gas particle purification unit 24 is arranged between the metal mesh adsorption unit 21 and the first gas particle purification unit 23.

[0123] Preferably, the adsorption electric field of the first gas purification unit 23 is a DC electric field, wherein the voltage between the discharge electrode and the adsorption electrode ranges from 10,000 volts to 50,000 volts; the adsorption electric field of the second gas purification unit 24 is an AC electric field.

[0124] With such a design, the adsorption electric field of the second gas purification unit 24 is an AC electric field, which can cause small particles in the gas to agglomerate into large particles, thereby improving the removal efficiency of particles.

[0125] For example, referring to FIG. 4 , along the airflow direction, the gas particle purification device 20 includes a metal mesh adsorption unit 21 , a second gas particle purification unit 24 and a first gas particle purification unit 23 .

[0126] Example 6

[0127] This embodiment provides a gas particle purification device, which includes a first gas particle purification unit. The first gas particle purification unit can be the gas particle purification unit 100 provided in Example 1 or the gas particle purification unit 200 provided in Example 2, wherein the adsorption electric field formed between the adsorption electrode and the discharge electrode is a DC electric field. The gas particle purification unit is not described in detail in this embodiment.

[0128] The gas particle purification device further comprises a coarse filter, which is located in front of the gas particle purification unit along the gas flow direction. There is a distance between the coarse filter and the gas particle purification unit.

[0129] In one embodiment of the present invention, the coarse filter comprises multiple layers of metal mesh stacked together or multiple layers of non-metal mesh stacked together. When the coarse filter is a metal mesh, the metal mesh may be grounded or not.

[0130] In this embodiment, the gas first enters the coarse filter for coarse filtration to filter out large particles in the gas. If used in a scenario with heavy oil fume pollution, the coarse filter can filter out large particles such as water vapor and oil gas in the flue gas; the gas after coarse filtration enters the first gas particle purification unit to further adsorb small particles, thereby improving the efficiency of adsorbing particles.

[0131] Example 7

[0132] A vehicle exhaust purification system for removing particulate matter from vehicle exhaust, comprising the gas particulate purification unit provided in Example 1, or the gas particulate purification unit provided in Example 2, or the gas particulate purification device provided in Example 3, or the gas particulate purification unit provided in Example 4, Example 5, or Example 6.

[0133] Example 8

[0134] An industrial waste gas purification system for removing particles from power plant waste gas, comprising the gas particle purification unit provided in Example 1, or the gas particle purification unit provided in Example 2, or the gas particle purification device provided in Example 3, or the gas particle purification unit provided in Example 4, Example 5, or Example 6.

[0135] Preferably, the industrial waste gas purification system comprises a power plant waste gas purification system.

[0136] References throughout this specification to "an example," "one embodiment," or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "an example," "in one embodiment," or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0137] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A discharge electrode for discharging after voltage is applied thereto, characterized in that: The discharge electrode includes an electrode rod and at least one discharge beam assembly. The discharge beam assembly includes a plurality of discharge beams circumferentially arranged on the electrode rod; the discharge beam includes a plurality of metal wires and / or conductive non-metal wires.

2. The discharge electrode according to claim 1, characterized in that The multiple discharge beams in one discharge beam assembly are evenly arranged in the same circumferential direction around the electrode rod.

3. The discharge electrode according to claim 1, characterized in that The discharge beam assembly includes 1-15 discharge beams.

4. The discharge electrode according to claim 1, characterized in that 3-21 discharge beam assemblies are arranged per meter on the electrode rod.

5. The discharge electrode according to any one of claims 1 to 3, characterized in that One end of the plurality of metal wires and / or non-metal wires of the discharge beam is fixed together to form a fixed end, and the other end is a free end. The fixed end of the discharge beam is fixed on the electrode rod.

6. The discharge electrode according to any one of claims 1 to 5, characterized in that The discharge beam in the discharge beam assembly is arranged at a certain angle to the axis of the electrode rod.

7. The discharge electrode according to claim 6, characterized in that The discharge beam is arranged at 90 degrees to the axis of the electrode rod.

8. The discharge electrode according to any one of claims 1 to 7, characterized in that The discharge beam is provided on at least one end portion of the electrode rod of the discharge electrode, and the discharge beam is provided parallel to the axis of the electrode rod.

9. The discharge electrode according to any one of claims 1 to 8, characterized in that The discharge beam satisfies one or both of the following conditions: (1) comprising n metal wires and / or conductive non-metal wires, wherein n is greater than or equal to 10,000; (2) comprising a plurality of metal wires and / or conductive non-metal wires, wherein the diameter of the metal wires is in the range of 0.1-100 um, or the diameter of the conductive non-metal wires is in the range of 0.1-100 um.

10. A gas particle purification unit, comprising an adsorption electrode and a discharge electrode for generating an adsorption electric field, wherein the adsorption electrode is a hollow tube and the discharge electrode penetrates the adsorption electrode, characterized in that: The discharge electrode is the discharge electrode according to any one of claims 1 to 9.

11. The gas particle purification unit according to claim 10, characterized in that: The electrode rod of the discharge electrode is arranged along the central axis of the adsorption electrode.

12. The gas particle purification unit according to claim 10 or 11, characterized in that: The adsorption electric field is a direct current electric field, and the voltage between the discharge electrode and the adsorption electrode ranges from 10,000 volts to 300,000 volts.

13. The gas particle purification unit according to claim 10 or 11, characterized in that: The adsorption electric field is an alternating current electric field.

14. Use of the gas particle purification unit according to any one of claims 10 to 13 in automobile exhaust purification or industrial waste gas purification.

15. A gas particle purification device, characterized in that: It includes a first gas particle purification unit, which includes the gas particle purification unit according to claim 12; the gas particle purification device also includes a metal mesh adsorption unit, which includes multiple layers of metal mesh stacked together; along the gas flow direction, the metal mesh adsorption unit is located in front of the first gas particle purification unit.

16. The gas particle purification device according to claim 15, characterized in that: It also includes a second gas particle purification unit, which includes the gas particle purification unit according to claim 13; the second gas particle purification unit is arranged between the metal mesh adsorption unit and the first gas particle purification unit.

17. Use of the gas particle purification device according to claim 15 or 16 in automobile exhaust purification or industrial waste gas purification.

18. A gas particle purification device, characterized in that: It includes a gas particle purification unit, which includes the gas particle purification unit according to any one of claims 10 to 13; the gas particle purification device also includes a coarse filter, which is located in front of the gas particle purification unit along the gas flow direction. Preferably, the coarse filter comprises multiple layers of metal mesh stacked together or multiple layers of non-metal mesh stacked together.

19. An automobile exhaust purification system, comprising the gas particle purification unit according to any one of claims 10 to 13 or the gas particle purification device according to claim 15, claim 16 or claim 18.

20. An industrial waste gas purification system, comprising the gas particle purification unit according to any one of claims 10 to 13 or the gas particle purification device according to claim 15, claim 16 or claim 18.

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