Discharge electrode, gas particle purification unit, gas particle purification device, automobile exhaust purification system and industrial waste gas purification system

Abstract

The utility model provides a discharge electrode, a gas particle purification unit, a gas particle purification device, an automobile exhaust purification system and an industrial waste gas purification system, the discharge electrode is used for discharging after being applied with voltage, and the discharge electrode is characterized by comprising an electrode bar and at least one discharge beam assembly, the discharge beam assembly comprises a plurality of discharge beams which are circumferentially arranged on the electrode bar; the discharge beam comprises a plurality of metal wires and / or conductive non-metal wires. And the plurality of discharge beams in one discharge beam assembly are uniformly arranged around the same circumferential direction of the electrode bar. And the discharge beam assembly comprises 1 to 15 discharge beams. And 3-21 discharge beam assemblies are arranged on each meter of the electrode bar. The gas particle purification unit provided by the utility model comprises the discharge electrode.

Description

Technical Field

[0001] This utility model belongs to the field of gas purification technology, and in particular relates to a discharge electrode and a gas particle purification unit, a gas particle purification device, an automobile exhaust purification system, and an industrial waste gas purification system. Background Technology

[0002] As people become increasingly environmentally conscious, their understanding of and demand for purification of air pollutants (including but not limited to smoke, dust, VOCs, and engine exhaust) are constantly rising. Consequently, more and better purification technologies are being installed and used in vehicles, factories, and homes. Among these technologies, electrostatic precipitator technology is widely used. The principle of electrostatic precipitator technology is that gas is ionized when it passes through an electrostatic field. Particulate matter in the gas combines with charged ions and tends to move towards the electrode with the opposite polarity of the charged ions, thus depositing. Therefore, the particulate matter removal rate is related to the charge efficiency of the particulate matter. The core electrostatic field is mostly composed of an adsorption plate and a cathode wire (discharge electrode) set in the adsorption plate. Therefore, the technology of the adsorption plate and the discharge electrode has become key to improving the particulate matter removal rate. Summary of the Invention

[0003] The present invention provides a discharge electrode and a gas particle purification unit, a gas particle purification device, an automobile exhaust purification system, and an industrial waste gas purification system.

[0004] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0005] In a first aspect, the present invention provides a discharge electrode for discharging when a voltage is applied. 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 disposed on the electrode rod. The discharge beams include a plurality of metal wires and / or conductive non-metal wires.

[0006] Furthermore, in the discharge electrode provided by this utility model, multiple discharge beams in one of the discharge beam assemblies are uniformly arranged around the same circumference of the electrode rod.

[0007] Furthermore, in the discharge electrode provided by this utility model, one end of a 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, and the fixed end of the discharge beam is fixed on the electrode rod.

[0008] Furthermore, in the discharge electrode provided by this utility model, the fixed ends of multiple discharge beams in one of the discharge beam assemblies are fixed in the same circumferential direction and uniformly arranged on the electrode rod.

[0009] Furthermore, in the discharge electrode provided by this utility model, 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 this utility model, 3-21 discharge beam assemblies are arranged per meter on the electrode rod. Alternatively, 3-7 discharge beam assemblies are arranged per meter on the electrode rod.

[0012] Furthermore, in the discharge electrode provided by this utility model, 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 disposed on at least one end of the electrode rod of the discharge beam, and the discharge beam is arranged parallel to the axis of the electrode rod.

[0014] Furthermore, in the discharge electrode provided by this utility model, 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. More preferably, the metallic wire is a stainless steel fiber wire.

[0016] Furthermore, in the discharge electrode provided by this utility model, the discharge beam comprises a plurality of rare earth tungsten fibers.

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

[0018] Preferably, the discharge beam comprises 100,000 to 100,000 rare earth tungsten fibers.

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

[0020] Furthermore, the discharge beam comprises n metal wires and / or conductive non-metal wires, wherein n is greater than or equal to 0.1 million.

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

[0022] Furthermore, in the discharge electrode provided by this utility model, the discharge beam comprises 10,000 to 200,000 metal wires and / or conductive non-metal wires; preferably, it comprises 10,000 to 80,000 metal wires and / or conductive non-metal wires.

[0023] Furthermore, in the discharge electrode provided by this utility model, 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 5-100 μm.

[0024] Furthermore, in the discharge electrode provided by this utility model, the conductive non-metallic wire is a carbon fiber wire, and the single fiber diameter of the carbon fiber wire ranges from 5 to 100 μm.

[0025] In a second aspect, this utility model provides a gas particle purification unit for removing particulate matter from a gas, including 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, and the discharge electrode penetrates the adsorption electrode. The discharge electrode includes an electrode rod and a discharge beam disposed on the electrode rod, with the end of the discharge beam facing the adsorption electrode.

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

[0027] Furthermore, in the gas particle purification unit provided by this utility model, the discharge electrode includes at least one discharge beam assembly, the discharge beam assembly includes multiple discharge beams circumferentially arranged on the electrode rod, and the discharge beams include multiple metal wires and / or conductive non-metal wires.

[0028] Furthermore, in the gas particle purification unit provided by this utility model, multiple discharge beams in one of the discharge beam assemblies are uniformly arranged around the same circumference of the electrode rod.

[0029] Furthermore, in the gas particle purification unit provided by this utility model, one end of a 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, and the fixed end of the discharge beam is fixed on the electrode rod.

[0030] Furthermore, in the gas particle purification unit provided by this utility model, 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 this utility model, the fixed ends of multiple discharge beams in one of the discharge beam assemblies are fixed in the same circumferential direction of the electrode rod and are evenly arranged.

[0032] Furthermore, in the gas particle purification unit provided by this utility model, 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 disposed on at least one end of the electrode rod of the discharge beam, and the discharge beam is arranged parallel to the axis of the electrode rod.

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

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

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

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

[0038] Furthermore, in the gas particle purification unit provided by this utility model, the discharge beam includes multiple metal wires and / or conductive non-metal wires.

[0039] Furthermore, in the gas particle purification unit provided by this utility model, 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. More preferably, the metallic wire is a stainless steel fiber wire.

[0041] Furthermore, in the gas particle purification unit provided by this utility model, the discharge beam includes multiple rare earth tungsten fibers.

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

[0043] Preferably, the discharge beam comprises 100,000 to 100,000 rare earth tungsten fibers.

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

[0045] Furthermore, the discharge beam comprises n metal wires and / or conductive non-metal wires, wherein n is greater than or equal to 0.1 million.

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

[0047] Furthermore, in the gas particle purification unit provided by this utility model, the discharge beam comprises 10,000 to 200,000 metal wires and / or conductive non-metal wires; preferably, it comprises 10,000 to 80,000 metal wires and / or conductive non-metal wires.

[0048] Furthermore, in the gas particle purification unit provided by this utility model, 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 5-100 μm.

[0049] Furthermore, in the gas particle purification unit provided by this utility model, the conductive non-metallic wire is a carbon fiber wire, and the single fiber diameter of the carbon fiber wire ranges from 5 to 100 μm.

[0050] Furthermore, in the gas particle purification unit provided by this utility model, the electrode rod of the discharge electrode is disposed at the center of the adsorption electrode.

[0051] Furthermore, in the gas particle purification unit provided by this utility model, 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 this utility model, the adsorption electric field is a DC electric field, and the voltage range between the discharge electrode and the adsorption electrode is 10,000 volts to 300,000 volts.

[0053] Furthermore, in the gas particle purification unit provided by this utility model, the adsorption electric field is a DC electric field, and the voltage range between the discharge electrode and the adsorption electrode is 10,000 volts to 50,000 volts.

[0054] Furthermore, in the gas particle purification unit provided by this utility model, the adsorption electric field is an alternating electric field.

[0055] A third aspect of this utility model provides a gas particle purification device, comprising a first gas particle purification unit, wherein the first gas particle purification unit includes the aforementioned 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 further includes a metal mesh adsorption unit, wherein the metal mesh adsorption unit 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, 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 this utility model further includes a second gas particle purification unit, which includes the gas particle purification unit described above. The adsorption electric field formed between the discharge electrode and the adsorption electrode in the second gas particle purification unit is an alternating electric field. The second gas particle purification unit is disposed between the metal mesh adsorption unit and the first gas particle purification unit.

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

[0058] A fourth aspect of this utility model provides a gas particle purification device, including a gas particle purification unit, wherein the gas particle purification unit includes the gas particle purification unit described above; the gas particle purification device further includes a coarse filter 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 or multiple layers of non-metal mesh stacked together.

[0060] Preferably, the metal mesh is grounded.

[0061] In a fifth aspect, this utility model provides the application of the above-mentioned gas particle purification unit in automobile exhaust purification.

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

[0063] In a seventh aspect, this utility model provides the application of the above-mentioned gas particle purification device in automobile exhaust purification.

[0064] The eighth aspect of this utility model provides the application of the above-mentioned gas particle purification device in industrial waste gas purification.

[0065] In a ninth aspect, this utility model provides an automotive exhaust purification system, including the aforementioned gas particle purification unit or the aforementioned gas particle purification device.

[0066] In a tenth aspect, this utility model provides an industrial waste gas purification system, including the aforementioned gas particle purification unit or the aforementioned gas particle purification device.

[0067] Beneficial effects of this utility model

[0068] 1. The gas particle purification unit and gas particle purification device provided by this utility model are used to remove particulate matter from gas. The particulate matter includes, but is not limited to, pollutants such as water droplets, viruses, bacteria, dust, and radiation-containing aerosols. They have high temperature resistance and can be applied to applications such as automobile exhaust treatment and power plant exhaust gas purification.

[0069] 2: The discharge electrode provided by this utility model includes multiple sets of circumferentially arranged discharge beam assemblies, and the discharge beam in the discharge beam assembly includes thousands of metal wires and / or conductive non-metal wires. The discharge beam is fixed on the discharge rod, similar to a brush. The discharge beam adopts corona discharge. The tip of each fiber at the free end is a discharge point, which significantly improves the discharge effect. The charge and charging efficiency of particulate matter in the gas are improved, and the ozone is effectively reduced to almost none.

[0070] 3. The discharge electrode provided by this utility model also has the following advantages:

[0071] Under the same purification efficiency requirements, compared with the purification device composed of an electrode rod or electrode wire and an adsorption electrode to purify particulate matter in the gas, the voltage required to be applied by the present invention when the discharge electrode is combined with the same adsorption electrode is much smaller than the voltage required by an electrode rod or electrode wire. This has the advantages of low energy consumption and low cost, thus effectively reducing ozone production to almost none.

[0072] Compared to setting one or more discharge beams at a single location, the discharge electrode provided by this invention has at least one set of discharge beam assemblies on an electrode rod. This extends the discharge length in the longitudinal direction, rapidly improving the dust removal efficiency of the purification device. Each set of discharge beam assemblies at the same location includes multiple circumferentially distributed discharge beams. This circumferential distribution around the electrode rod ensures higher discharge density and more uniform discharge in the lateral direction. This extension of the discharge electrode in both the longitudinal and lateral directions causes more particulate matter in the gas within the hollow adsorption electrode to become charged, improving the charging effect and thus enhancing the particulate matter adsorption effect, significantly increasing the gas purification rate. Furthermore, this discharge electrode structure design also effectively expands the adsorption electrode area of ​​the purification device, significantly improving its adsorption and purification capacity.

[0073] 4: In the discharge electrode provided by this utility model, in one case, a discharge beam is also provided at one or both ends of the electrode rod. After applying voltage, the discharge beam at the end generates positive or negative ions through corona discharge. The discharge beam is in the same direction as the gas flow. When the gas flows through the discharge electrode, the charging efficiency of particulate matter in the gas can be further improved, thereby improving the gas purification efficiency. Attached Figure Description

[0074] Figure 1 This is a schematic diagram of the gas particle purification unit according to Embodiment 1 of this utility model.

[0075] Figure 2 This is a schematic diagram of the gas particle purification unit involved in Embodiment 2 of this utility model.

[0076] Figure 3This is a schematic diagram of one of the gas particle purification devices involved in Embodiment 4 of this utility model.

[0077] Figure 4 This is a schematic diagram of the second gas particle purification device according to Embodiment 4 of this utility model. Detailed Implementation

[0078] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0079] It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model. Furthermore, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0080] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0081] Example 1

[0082] This utility model provides a gas particle purification unit for removing particulate matter from gas, including water droplets, dust, and viruses. Figure 1As shown, the gas particle purification unit 100 includes an adsorption electrode 1 and a discharge electrode 2 for generating an adsorption electric field. In this 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 to allow gas to pass through and to perform electric field treatment.

[0083] like Figure 1 As shown, the discharge electrode 2 penetrates into 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 disposed 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, both the adsorption electrode 1 and the discharge electrode 2 are made of stainless steel.

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

[0086] In one embodiment, multiple discharge beams in the same discharge beam assembly are uniformly arranged around the same circumference of the electrode rod.

[0087] In one embodiment, the discharge beam assembly includes 1-15 discharge beams. Preferably, it includes 1-3, or 3-7, or 8-15, with typical but non-limiting numbers 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 arranged per meter on the electrode rod. Preferably, 3-7 discharge beam assemblies are arranged per meter on the electrode rod, or 3-16 discharge beam assemblies are arranged per meter on the electrode rod, or 3-18 discharge beam assemblies are arranged per meter on the electrode rod, or 16-21 discharge beam assemblies are arranged per meter on the electrode rod. Typical, but not limiting, numbers of discharge beam assemblies 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 distance 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 components on the electrode rod, the number of discharge beam components, and the number of discharge beams in the discharge beam components can be set according to actual needs.

[0090] In one embodiment, the discharge beam in the discharge beam assembly is positioned at a certain angle to the axis of the electrode rod. Preferably, as shown below... Figure 1 As shown, the discharge beam 22 is positioned at 90° to the axis of the electrode rod 21.

[0091] In one embodiment, one end of one or more metal and / or non-metal wires of the discharge beam 22 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 to the electrode rod 21. In this embodiment, the fixed ends of multiple discharge beams 22 in a discharge beam assembly 220 are fixed to the same circumference of the electrode rod 21 and are evenly arranged.

[0092] In this invention, the discharge beam 22 comprises multiple metal wires and / or conductive non-metal wires (discharge materials). One end of each metal wire and / or non-metal wire is fixed together to form a fixed end, and the other end is a free end. The multiple metal wires and / or non-metal wires at the free end are dispersed. The free end of the discharge beam faces the inner wall of the adsorption electrode, and 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 this invention, the electrode rod is made of conductive material. The material of the electrode rod and the discharge beam can be the same or different. For example, the electrode rod is made of stainless steel and the discharge beam is composed of multiple stainless steel fibers; or the electrode rod is made of stainless steel and the discharge beam is composed of multiple carbon fiber filaments.

[0094] In this invention, multiple discharge beams are fixed on an electrode rod. This design serves two purposes: first, it fixes one or more discharge beams; second, when the electrode rod is electrically connected to one pole of the power supply, the discharge beams are also connected to the power supply. In the case of multiple discharge beams, multiple discharge beams can be connected to one power supply simultaneously. The structure is simple and convenient.

[0095] In this invention, at least one set of discharge beam assemblies is provided on an electrode rod, which extends the discharge length in the longitudinal direction and rapidly improves the dust removal efficiency of the purification device. Each set of discharge beam assemblies includes multiple discharge beams distributed circumferentially. This circumferential distribution around the electrode rod ensures higher discharge density and more uniform discharge in the transverse direction. This extension of the discharge electrode in both the longitudinal and transverse directions causes more particulate matter in the gas within the hollow adsorption electrode to become charged, improving the charging effect and thus enhancing the adsorption effect of particulate matter, significantly improving the gas purification rate. Furthermore, this discharge electrode structure design also effectively expands the adsorption electrode area of ​​the purification device, significantly improving its adsorption and purification capacity.

[0096] Furthermore, in the discharge electrode provided by this utility model, 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. More preferably, the metallic wire is a stainless steel fiber wire.

[0098] Furthermore, in the discharge electrode provided by this utility model, the discharge beam comprises a plurality of rare earth tungsten fibers.

[0099] In this invention, the discharge beam comprises n metal wires and / or conductive non-metal wires, wherein n is greater than or equal to 1,000; preferably, it comprises more than 5,000 metal wires and / or conductive non-metal wires; preferably, it comprises more than 10,000 metal wires and / or conductive non-metal wires; preferably, it comprises 10,000 to 200,000 metal wires and / or conductive non-metal wires; preferably, it comprises 10,000 to 80,000 metal wires and / or conductive non-metal wires. Typical but non-limiting quantities of metal wires and / or conductive non-metal wires are 1,000, 2,000, 3,000, 4,000, 5,000, 6,000, 8,000, 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 composed of thousands of metal wires and / or conductive non-metal wires is fixed on the electrode rod, resembling a brush. The discharge bundle employs corona discharge, with the tip of each wire at its free end serving as a discharge point, significantly improving the discharge effect and effectively reducing ozone production to almost zero. In this invention, tests have shown that, under the same purification efficiency requirements, compared to purifying particulate matter from a gas using a single electrode rod or wire and an adsorption electrode, the voltage required for the discharge bundle combined with the same adsorption electrode is far less than that required for a single electrode rod or wire. This results in advantages such as low energy consumption and low cost.

[0101] In this invention, the diameter of the metal wire ranges from 0.1 to 100 μm; preferably, the diameter 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, the single fiber diameter of which can range from 0.1 to 100 μm, or the single fiber diameter range of which can range from 5 to 100 μm, and the carbon content in the discharge material is 90-99.9%, typically but non-limitingly, 90%, 93%, 96%, or 99%.

[0102] In this invention, the diameter of the conductive non-metallic wire ranges from 0.1 to 100 μm; preferably, the diameter of the conductive non-metallic wire ranges from 5 to 100 μm; typical but non-limiting conductive non-metallic wire diameters 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, conductive non-metallic wires include, but are not limited to, carbon fiber wires. The single fiber diameter of carbon fiber wires can range from 0.1 to 100 μm; the single fiber diameter of carbon fiber wires can range from 5 to 100 μm. Typical but non-limiting single fiber diameters of carbon fiber wires 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.

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

[0104] In this invention, the discharge beam of the discharge electrode is subjected to voltage for discharge, causing the gas to ionize and the particles in the gas to become charged.

[0105] like Figure 1As shown, 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 60,000 volts to 150,000 volts, or 160,000 volts to 300,000 volts. Typical but non-limiting voltages are 10,000 volts, 12,000 volts, and 15,000 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.

[0106] In this invention, a gas particle purification unit is used to adsorb particulate matter in gas to obtain 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 terminal of the power supply and the adsorption electrode is connected to the positive terminal (the adsorption electrode can be grounded), the particulate matter becomes negatively charged during this process. The charged particulate matter is adsorbed onto the adsorption electrode. The particulate matter includes, but is not limited to, contaminants such as viruses, bacteria, and radiation-containing aerosols. After treatment with an electric field, particulate matter and aerosols containing viruses, bacteria, and radiation are removed from the gas, resulting in sterile, radiation-free, and virus-free clean gas, thus achieving the effect of gas purification.

[0107] In one embodiment, when processing large flow rates of gas, or when the application scenario involves a large gas area, multiple gas particle purification units 100 can be connected together for use, and the connection method includes series and / or parallel connection.

[0108] Example 2

[0109] This utility model provides a gas particle purification unit for removing particulate matter from gas, including water droplets, dust, and viruses. Figure 2As shown, the gas particle purification unit 200 includes an adsorption electrode 1 and a discharge electrode 2' for generating an adsorption electric field. The difference between the gas particle purification unit 200 in this embodiment and the gas particle purification unit 100 in Embodiment 1 is that the discharge electrode 2' further includes a discharge beam disposed at at least one end of the electrode rod, the discharge beam being arranged parallel to the axis of the electrode rod. The similarities between the gas particle purification unit 200 and Embodiment 1 will not be repeated here; this embodiment only describes the differences.

[0110] In this embodiment, as Figure 2 As shown, a discharge beam 22' is also provided on 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 located at the end of the electrode rod 21' near the inlet of the gas to be treated.

[0111] In this embodiment, the structure and materials of the discharge beam 22' are the same as those of the discharge beam 22 in Embodiment 1, and will not be described again.

[0112] In other embodiments, discharge beams parallel to the axis of the electrode rod 21' are provided at both ends of the electrode rod 21'.

[0113] With this design, a discharge beam is set at one or both ends of the electrode rod of the discharge electrode. After applying voltage, the discharge beam at the end generates positive or negative ions through corona discharge. The discharge beam is in the same direction as the airflow. When the gas flows through the discharge electrode, the charging efficiency of particulate matter in the gas can be further improved, thereby improving the gas purification efficiency.

[0114] Example 3

[0115] This embodiment provides a gas particle purification unit, which differs from the gas particle purification unit 100 provided in Embodiment 1 in that the adsorption electric field formed between the adsorption electrode 1 and the discharge electrode 2 is an alternating electric field, and the adsorption electrode 1 and the discharge electrode 2 are electrically connected to the two poles of an AC power supply, respectively.

[0116] Example 4

[0117] This embodiment provides a gas particle purification unit, which differs from the gas particle purification unit 200 provided in Embodiment 2 in that the adsorption electric field formed between the adsorption electrode 1 and the discharge electrode 2' is an alternating electric field, and the adsorption electrode 1 and the discharge electrode 2' are electrically connected to the two poles of an AC power supply, respectively.

[0118] Example 5

[0119] 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 Embodiment 1 or the gas particle purification unit 200 provided in Embodiment 2. The adsorption electric field formed between the adsorption electrode and the discharge electrode is a DC electric field. The gas particle purification unit will not be described in detail in this embodiment.

[0120] Reference Figure 3 The gas particle purification device 20 also 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.

[0121] In this embodiment, the multilayer metal mesh 211 may or may not be grounded.

[0122] With this 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 particle adsorption.

[0123] In one implementation, reference is made to Figure 4 The gas particle purification device 20 also includes a second gas particle purification unit 24, which includes the gas particle purification unit provided in Embodiment 3 or Embodiment 4. The adsorption electric field formed between the adsorption electrode and the discharge electrode is an alternating electric field. The gas particle purification unit will not be described in detail in this embodiment. The second gas particle purification unit 24 is disposed between the metal mesh adsorption unit 21 and the first gas particle purification unit 23.

[0124] Preferably, the adsorption electric field of the first gas purification unit 23 is a DC electric field, wherein the voltage range between the discharge electrode and the adsorption electrode is 10,000 volts to 50,000 volts; the adsorption electric field of the second gas purification unit 24 is an AC electric field.

[0125] With this design, the adsorption electric field of the second gas purification unit 24 is an alternating electric field, which can cause small particles in the gas to agglomerate into large particles, thereby improving the removal efficiency of particles.

[0126] For example, refer to Figure 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.

[0127] Example 6

[0128] 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 Embodiment 1 or the gas particle purification unit 200 provided in Embodiment 2. The adsorption electric field formed between the adsorption electrode and the discharge electrode is a DC electric field. The gas particle purification unit will not be described in detail in this embodiment.

[0129] The gas particulate purification device also includes a coarse filter, located in front of the gas particulate purification unit along the gas flow direction. There is a distance between the coarse filter and the gas particulate purification unit.

[0130] In one embodiment of this invention, the coarse filter comprises multiple layers of metal mesh or multiple layers of non-metal mesh stacked together. When the coarse filter is a metal mesh, the metal mesh may or may not be grounded.

[0131] In this embodiment, the gas first enters the coarse filter for coarse filtration to remove large particles in the gas. If used in scenarios with heavy oil fume pollution, the coarse filter can remove large particles such as water vapor and oil vapor in the flue gas. After coarse filtration, the gas enters the first gas particle purification unit to further adsorb small particles, thereby improving the efficiency of particle adsorption.

[0132] Example 7

[0133] An automotive exhaust purification system is provided for removing particulate matter from automotive exhaust. It includes a gas particulate purification unit provided in Example 1, or a gas particulate purification unit provided in Example 2, or a gas particulate purification device provided in Example 3, or a gas particulate purification unit provided in Example 4, Example 5, or Example 6.

[0134] Example 8

[0135] An industrial waste gas purification system is used to remove particulate matter from waste gas from power plants. It includes a gas particulate purification unit provided in Example 1, or a gas particulate purification unit provided in Example 2, or a gas particulate purification device provided in Example 3, or a gas particulate purification unit provided in Example 4, Example 5, or Example 6.

[0136] Preferably, the industrial waste gas purification system includes a power plant waste gas purification system.

[0137] Throughout this specification, references to "an example," "an embodiment," or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment. Therefore, the appearance of "an example," "an embodiment," or "an embodiment" in various places throughout this specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0138] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A discharge electrode, which is used for discharge after a voltage is applied, 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 disposed on the electrode rod. The discharge beams include a plurality of metal wires and / or conductive non-metal wires.

2. The discharge electrode according to claim 1, characterized in that, In one of the discharge beam assemblies, multiple discharge beams are uniformly arranged around the same circumference of the electrode rod.

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

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

5. The discharge electrode according to claim 1, characterized in that, 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. The fixed end of the discharge beam is fixed to the electrode rod.

6. The discharge electrode according to claim 1, characterized in that, In the discharge beam assembly, the discharge beam is set 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 positioned at a 90° angle to the axis of the electrode rod.

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

9. The discharge electrode according to any one of claims 1-7, characterized in that, The discharge beams all satisfy one or two of the following conditions: (1) include n metal wires and / or conductive non-metal wires, wherein n is greater than or equal to 0.1 million; (2) include multiple metal wires and / or conductive non-metal wires, wherein the diameter of the metal wires is in the range of 0.1-100 μm, or the diameter of the conductive non-metal wires is in the range of 0.1-100 μm.

10. The discharge electrode according to claim 8, characterized in that, The discharge beams all satisfy one or two of the following conditions: (1) include n metal wires and / or conductive non-metal wires, wherein n is greater than or equal to 0.1 million; (2) include multiple metal wires and / or conductive non-metal wires, wherein the diameter of the metal wires is in the range of 0.1-100 μm, or the diameter of the conductive non-metal wires is in the range of 0.1-100 μm.

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

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

13. The gas particle purification unit according to claim 11, characterized in that, The free end of the discharge electrode faces the inner wall of the adsorption electrode.

14. The gas particle purification unit according to claim 11, characterized in that, The adsorption electric field is a DC electric field, and the voltage range between the discharge electrode and the adsorption electrode is 10,000 volts to 300,000 volts.

15. The gas particle purification unit according to claim 11, characterized in that, The adsorption electric field is an alternating electric field.

16. A gas particle purification device, characterized in that, The device includes a first gas particle purification unit, which includes the gas particle purification unit as described in claim 14; the gas particle purification device further includes a metal mesh adsorption unit, which includes multiple layers of metal mesh stacked together; the metal mesh adsorption unit is located in front of the first gas particle purification unit along the gas flow direction.

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

18. A gas particle purification device, characterized in that, The device includes a gas particle purification unit, which includes the gas particle purification unit according to any one of claims 11-15; the gas particle purification device further includes a coarse filter located in front of the gas particle purification unit along the gas flow direction.

19. The gas particle purification device according to claim 18, characterized in that, The coarse filter comprises multiple layers of metal mesh or multiple layers of non-metal mesh stacked together.

20. A vehicle exhaust purification system, characterized in that, Includes the gas particle purification unit according to any one of claims 11-15 or the gas particle purification device according to claim 16 or 17.

21. An industrial waste gas purification system, characterized in that, Includes the gas particle purification unit according to any one of claims 11-15 or the gas particle purification device according to claim 16 or 17.

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