Gas particulate matter cleanup device and system, mask system and table

Abstract

The present invention discloses a gas particulate matter purification apparatus, a system, a mask system, and a table. The gas particulate matter purification apparatus for adsorbing and removing particulate matter from gas includes a front discharge electrode assembly and an adsorption unit. Ina gas flow direction, the front discharge electrode assembly is located in front of the adsorption unit and there is a distance between the front discharge electrode assembly and the adsorption unit. The front discharge electrode assembly includes at least one discharge bundle connected to a DC high-voltage power supply. The adsorption unit includes at least one adsorption electrode and at least one discharge electrode for generating an adsorption electric field. A gas flow channel is formed between the discharge electrode and the adsorption electrode to allow the gas to pass through and undergo the electric field treatment. The distance between the discharge electrode and the adsorption electrode that are adjacent to each other is the same. After the gas is purified by the gas particulate matter purification apparatus, the clean gas free of bacteria, radiation, and viruses can be obtained.

Description

FIELD OF THE INVENTION

[0001] The present invention relates to a technical field, and in particular to a gas particulate matter purification apparatus, a system, a mask system and a table.BACKGROUND OF THE INVENTION

[0002] As people's environmental awareness grows, the understanding of and demand for air pollutants (including but not limited to smoke, dust, VOCs, and engine exhaust) are also increasing. Consequently, more and better purification technologies are being installed and used in vehicles, factories, and homes. Among these purification technologies, the technology of electrostatic precipitation and adsorption is particularly common. The principle of electrostatic precipitation and adsorption is that gas is ionized when it passes through an electrostatic field, and particles in the gas combine with the charged ions and move toward and deposit on the electrodes with a polarity opposite to the charged ions. Therefore, the particle removal rate is related to the particle charging efficiency. In current technologies, low particle charging efficiency leads to poor particle removal and purification performance. The core electrostatic field is composed of an adsorption plate and a cathode wire disposed between the plates. Therefore, the adsorption plate and cathode wire related technology is the key element to improve particle removal efficiency.

[0003] Internal combustion engine exhaust contains large amounts of particulate matter and pollutants such as nitrogen oxides, which are filtered through particulate filters (DPFs) in current technologies. While DPFs can filter out large particles, they create high backpressure, which significantly increase engine fuel and energy consumption, and overall operating costs. Therefore, there is an urgent need to find new methods for removing particulate matter that can overcome the limitations of electrostatic precipitation and adsorption and the high backpressure in DPFs.SUMMARY OF THE INVENTION

[0004] The present invention aims to provide a gas particulate matter purification apparatus, a system, a mask system, and a table to solve the aforementioned problems in the prior art.

[0005] To solve the aforementioned problems, according to a first aspect of the present invention, a gas particulate matter purification apparatus for adsorbing and removing particulate matter from gas is provided. The gas particulate matter purification apparatus comprises: a front discharge electrode assembly and an adsorption unit; in a gas flow direction, the front discharge electrode assembly is located in front of the adsorption unit and there is a distance between the front discharge electrode assembly and the adsorption unit; the front discharge electrode assembly comprises at least one discharge bundle connected to a DC high-voltage power supply; the adsorption unit comprises at least one adsorption electrode and at least one discharge electrode for generating an adsorption electric field; a gas flow channel is formed between the discharge electrode and the adsorption electrode to allow the gas to pass through and undergo the electric field treatment; and a distance between the discharge electrode and the adsorption electrodes that are adjacent to each other is same.

[0006] Optionally, the end part of the adsorption electrode that is close to the front discharge electrode assembly projects out the end part of the discharge electrode that is close to the front discharge electrode assembly; or the end part of the adsorption electrode that is close to the front discharge electrode assembly and the end part of the discharge electrode that is close to the front discharge electrode assembly are located in the same plane perpendicular to the direction of gas flow.

[0007] Optionally, the discharge electrode comprises a first end of the discharge electrode that is close to the front discharge electrode assembly, and the adsorption electrode comprises a first end of the adsorption electrode that is close to the front discharge electrode assembly, the first end of the adsorption electrode is located in front of the first end of the discharge electrode, a distance between an orthographic projection of the first end of the discharge electrode on the adsorption electrode and the first end of the adsorption electrode is less than or equal to 10 cm.

[0008] Optionally, a distance between an orthographic projection of the first end of the adsorption electrode on the discharge electrode and the first end of the discharge electrode is less than or equal to 3 cm.

[0009] Optionally, the gas particulate matter purification apparatus comprises a first power supply and a second power supply, two ends of the first power supply are electrically connected to the discharge bundle and the adsorption electrode respectively, and two ends of the second power supply are electrically connected to the discharge electrode and the adsorption electrode respectively, and the adsorption electrode is grounded. Optionally, the discharge bundle satisfies at least one of the following conditions: (1) The discharge bundle comprises n metal wires and / or conductive non-metallic wires, wherein n is greater than or equal to 1,000; (2) The discharge bundle comprises a plurality of metal wires and / or conductive non-metallic wires, the diameter range of the metal wires is from 0.1 to 100 µm, or the diameter range of the conductive non-metallic wires is from 0.1 to 100 µm. Optionally, the metal wires comprise at least one of stainless steel fiber wires, titanium-chromium-aluminum alloy wires, titanium alloy wires, and nickel alloy wires, or the conductive non-metallic wires are carbon fiber wires.

[0010] Optionally, a diameter range of a single fiber of the stainless steel fiber wire is from 5 to 100 µm, or a diameter range of a single fiber of the carbon fiber wire is from 5 to 100 µm.

[0011] Optionally, the front discharge electrode assembly comprises at least one discharge electrode group, and the discharge electrode group comprises a plurality of circumferentially arranged discharge bundles; when the front discharge electrode assembly comprises a plurality of discharge electrode groups of different radii, the plurality of discharge electrode groups are coaxially arranged.

[0012] Optionally, one end of a plurality of the metal wires and / or the conductive non-metallic wires are fixed together to form a fixed end, and the other end is a free end facing the adsorption unit; the front discharge electrode assembly further comprises a support plate, and the fixed end of the discharge bundle is fixed to the support plate.

[0013] Optionally, an outermost adsorption electrode in the adsorption unit is an outer adsorption electrode, one end of the outer adsorption electrode extends to form an extension portion, and the front discharge electrode assembly is disposed within the extension portion.

[0014] Optionally, a vertical distance between the front discharge electrode assembly and the extension portion is 5 to 150 mm.

[0015] Optionally, a vertical distance between the front discharge electrode assembly and the extension portion is 5 to 20 mm.

[0016] Optionally, an insulating layer is provided on an inner wall of the extension portion, the front discharge electrode assembly is disposed within the insulating layer, and there is a distance between the insulating layer and the front discharge electrode assembly.

[0017] Optionally, a vertical distance between the front discharge electrode assembly and the insulating layer is 5 to 150 mm.

[0018] Optionally, a vertical distance between the front discharge electrode assembly and the insulating layer is 5 to 20 mm.

[0019] Optionally, the adsorption electrode and the discharge electrode are both hollow tubes of different diameters, the discharge electrode and the adsorption electrode are coaxially assembled and staggered in sequence from the axis toward the periphery, a uniform distance is maintained between the discharge electrode and the adsorption electrode, and a gas flow channel is formed between the discharge electrode and the adsorption electrode for the gas to pass through for electric field treatment.

[0020] Optionally, the cross-section of the hollow tube is circular or polygonal. Optionally, the polygon is hexagonal or rectangular.

[0021] Optionally, the hollow tube with the smallest diameter in the adsorption unit is an inner discharge electrode or an inner adsorption electrode, and the gas particulate matter purification apparatus further comprises a power supply disposed within the inner discharge electrode or the inner adsorption electrode. Optionally, the adsorption electrode and the discharge electrode are both flat plates, the discharge electrodes and the adsorption electrodes are staggered in parallel, a uniform distance is maintained between the discharge electrode and the adsorption electrode, and a gas flow channel is formed between the discharge electrode and the adsorption electrode for the gas to pass through for electric field treatment.

[0022] Optionally, the gas particulate matter purification apparatus has at least one of the following features: feature 1: a distance between the discharge electrode and the adsorption electrode is 30 mm or less; optionally, the distance is 10 mm or less; optionally, the distance is 2.5 to 10 mm, or the distance is 3 to6 mm; feature 2: a voltage between the discharge electrode and the adsorption electrode ranges from -0.5 kV to -12 kV; optionally, the voltage between the discharge electrode and the adsorption electrode ranges from -1kV to -8kV; optionally, the voltage ranges from -1kV to -3kV; optionally, the voltage ranges from -0.5kV to -3kV; feature 3: if a distance between the discharge electrode and the adsorption electrode is 10mm or less, the voltage between the adsorption electrode and the discharge electrode ranges from -0.5 to -12kV; feature 4: a ratio of a discharge area of the front discharge electrode assembly to a radial cross-sectional adsorption area of the adsorption unit is less than 0.9; optionally, the ratio of the discharge area of the front discharge electrode assembly to the radial cross-sectional adsorption area of the adsorption unit is 0.5 to 0.9; feature 5: when a radial cross-sectional adsorption area of the adsorption unit is 0.001m 2< to 0.5m 2< , a voltage of the discharge bundle is -3kV to -60kV; feature 6: a vertical distance L1 from a free end of the discharge bundle to a first end of the adsorption electrode of the adsorption unit and a vertical distance L3 from the discharge bundle to the inner wall of the outermost adsorption electrode are directly proportional: L1 = (0.7-3) × L3; feature 7: a flow velocity of gas passing through the gas particulate matter purification apparatus for electric field treatment ranges from 0.2 m / s to 2.0 m / s;optionally, the flow velocity of gas passing through the gas particulate matter purification apparatus for electric field treatment is 1 m / s. feature 8: a voltage of the discharge bundle ranges from -3 kV to -60 kV. feature 9: a thickness of the discharge electrode and / or the adsorption electrode is 0.01 mm to 5 mm. optionally, the thickness of the discharge electrode and / or the adsorption electrode is 1.0 to 5 mm; or, the thickness is 0.2 to 3 mm. feature 10: a length of the gas flow channel is 50 to 200 mm.

[0023] Optionally, the gas particulate matter purification apparatus further comprises a metal mesh apparatus located in front of the front discharge electrode assembly; the metal mesh apparatus comprises a metal mesh front discharge electrode assembly and a first metal mesh adsorption unit; the metal mesh front discharge electrode assembly comprises at least one discharge bundle electrically connected to one electrode of a DC high-voltage power supply, the first metal mesh adsorption unit comprises stacked multi-layer metal mesh electrically connected to another electrode of the DC high-voltage power supply; in the gas flow direction, the first metal mesh adsorption unit is located in front of the metal mesh front discharge electrode assembly and there is a distance between the first metal mesh adsorption unit and the metal mesh front discharge electrode assembly; or the first metal mesh adsorption unit is located behind the metal mesh front discharge electrode assembly and there is a distance between the first metal mesh adsorption unit and the metal mesh front discharge electrode assembly; the discharge bundle is disposed on a surface of the metal mesh front discharge electrode assembly facing the first metal mesh adsorption unit, and the discharge bundle of the metal mesh front discharge electrode assembly and the multi-layer of metal mesh of the first metal mesh adsorption unit form an electric field.

[0024] Optionally, the metal mesh apparatus further comprises a second metal mesh adsorption unit, and the second metal mesh adsorption unit comprises stacked multi-layer metal mesh; wherein in the gas flow direction, the first metal mesh adsorption unit is disposed on one side of the metal mesh front discharge electrode assembly, and the second metal mesh adsorption unit is disposed on the other side of the metal mesh front discharge electrode assembly, there is a distance between the second metal mesh adsorption unit and the metal mesh front discharge electrode assembly.

[0025] Optionally, the multi-layer metal mesh in the second metal mesh adsorption unit are electrically connected to one electrode of a DC high-voltage power supply.

[0026] Optionally, the metal mesh front electrode group comprises at least one discharge electrode group, the discharge electrode group comprises a plurality of circumferentially arranged discharge bundles; and when the metal mesh front discharge electrode assembly comprises a plurality of discharge electrode groups of different radii, the discharge electrode groups are coaxially arranged.

[0027] Optionally, the discharge electrode and / or the adsorption electrode are made of a metal material or a non-metallic conductive material; and the non-metallic conductive material comprises at least one of graphite, graphene, carbon nanotubes, carbon 60, carbon fiber, conductive carbon black, amorphous carbon, and ion-conductive ceramics, or a synthetic material containing at least one of graphite, graphene, carbon nanotubes, carbon 60, carbon fiber filaments, conductive carbon black, amorphous carbon, and ion-conductive ceramics; or the metal material comprises stainless steel.

[0028] Optionally, the gas particulate matter purification apparatus further comprises a gas distribution unit, and the gas passes through the gas distribution unit, the front discharge electrode assembly, and the adsorption unit in sequence in the gas flow direction.

[0029] According to a second aspect of the present invention, an indoor gas treatment system is provided. The indoor gas treatment system comprises a partition separating indoor from outdoor, the partition is provided with agas flow channel, and the gas particulate purification apparatus according to any one of the preceding aspectis installed within the gas flow channel; and air from the outdoor enters the indoor through the gas particulate matter purification apparatus in the partition, or air from the indoor enters the outdoor through the gas particulate matter purification apparatus in the partition.

[0030] According to a third aspect of the present invention, a vehicle gas treatment system is provided. The vehicle gas treatment system comprises an air conditioning internal circulation conduit and an air conditioning external circulation conduit, and the air conditioning internal circulation conduit and / or the air conditioning external circulation conduitare provided with the gas particulate matter purification apparatus according to any one of preceding aspect.

[0031] According to a forth aspect of the present invention, a mask system is provided. The mask system comprises a mask, a gas conduit, and the gas particulate matter purification apparatus according to any one of preceding aspect. The gas particulate matter purification apparatus is in fluid communication with the mask through the gas conduit, and purified gas treated by the gas particulate matter purification apparatus is delivered to the mouth and nose of a person through the gas apparatus and the mask, or gas exhaled from the mouth and nose of a person first passes through a mask and a gas conduit, then undergoes treatment by a gas particulate matter purification apparatus before being released into the air.

[0032] According to a fifth aspect of the present invention, an exhaust gas treatment system. is provided. The exhaust gas treatment system comprises the gas particulate matter purification apparatus according to any one of preceding aspect, and the exhaust gas comprises one of cooking fume, processing equipment exhaust, industrial exhaust, automobile exhaust, and boiler flue gas.

[0033] According to a sixth aspect of the present invention, a table is provided. The table comprises the gas particulate matter purification apparatus according to any one of preceding aspect.

[0034] According to a seventh aspect of the present invention, a system for producing water from air is provided. The system comprises the gas particulate matter purification apparatus according to any one of preceding aspect and a water production apparatus. The gas particulate matter purification apparatus is first used to adsorb and remove particulate matter in the air, and then the water production device is used to produce water from the purified air.

[0035] According to an eighth aspect of the present invention, a front discharge electrode assembly is provided. The front discharge electrode assembly is configured to discharge when applied with a voltage. The front discharge electrode assembly comprises at least one discharge bundle connected to a DC power supply, and the discharge bundle comprises a plurality of metal wires and / or conductive non-metallic wires.

[0036] Further, in the front discharge electrode assembly according to the present invention, the discharge bundle comprises n metal wires and / or conductive non-metallic wires, where n is greater than or equal to 1,000.

[0037] Further, in the front discharge electrode assembly according to the present invention, a diameter of the metal wires is 0.1 to 100 µm; or, a diameter of the conductive non-metallic wires is 0.1 to 100 µm.

[0038] Further, in the front discharge electrode assembly according to the present invention, the discharge bundle comprises 10,000 to 200,000 metal wires and / or conductive non-metallic wires; preferably, the discharge bundle comprises 10,000 to 80,000 metal wires and / or conductive non-metallic wires.

[0039] Further, in the front discharge electrode assembly according to the present invention, the metal wires comprise at least one of stainless steel fiber wires, titanium-chromium-aluminum alloy wires, titanium alloy wires, and nickel alloy wires; preferably, the diameter range of a single fiber of the stainless steel fiber wires is 5 to 100 µm.

[0040] Further, in the front discharge electrode assembly according to the present invention, the conductive non-metallic wires are carbon fiber wires, and the diameter range of a single fiber of the carbon fiber wires is 5 to 100 µm.

[0041] Further, in the front discharge electrode assembly according to the present invention, the front discharge electrode assembly comprises at least one discharge electrode group, and the discharge electrode group comprises a plurality of circumferentially arranged discharge bundles; preferably, the front discharge electrode assembly comprises a plurality of coaxially arranged discharge electrode groups of different radii.

[0042] Further, in the front discharge electrode assembly according to the present invention, the front discharge electrode assembly comprises one discharge electrode group.

[0043] Further, in the front discharge electrode assembly according to the present invention, the extended line of the plurality of circumferentially arranged discharge bundles in the discharge electrode assembly form an angle with the axis of the discharge electrode assembly. Preferably, the angle is 10 to 85°.

[0044] Further, in the front discharge electrode assembly according to the present invention, the plurality of circumferentially arranged discharge electrode in the discharge electrode group are positioned in the axial direction of the discharge electrode group. Further, in the front discharge electrode assembly according to the present invention, the voltage of the front discharge electrode assembly ranges from -3kV to -60kV.

[0045] Further, in the front discharge electrode assembly according to the present invention, the discharge bundle comprises a plurality of metal wires and / or non-metal wires, one end of the plurality of metal wires and / or conductive non-metallic wires are fixed together to form a fixed end, and the other end is a free end.

[0046] Further, in the front discharge electrode assembly according to the present invention, the front discharge electrode assembly further comprises a support plate, and the fixed end of the discharge bundle is fixed to the support plate.

[0047] According to a ninth aspect of the present invention, a gas particulate matter purification apparatus is provided. The particulate matter purification apparatus includes a front discharge electrode assembly and an adsorption unit. The front discharge electrode assembly is the front discharge electrode assembly mentioned above. In the gas flow direction, the front discharge electrode assembly is located in front of the adsorption unit and there is a distance between the front discharge electrode assembly and the adsorption unit; the discharge bundle of the front discharge electrode assembly discharges to charge at least a part of particulate matter in the gas flowing through it; and the gas containing the charged particulate matter then enters the adsorption unit for electrostatic particulate removal treatment.

[0048] According to a tenth aspect of the present invention, another gas particulate matter purification apparatus, for adsorbing and removing particulate matter from gas, is provided. The gas particulate matter purification apparatus comprises: a discharge unit comprising at least one discharge bundle electrically connected to one electrode of a DC high-voltage power supply; a first metal mesh adsorption unit comprising a stacked multi-layer metal mesh, wherein the multi-layer metal mesh is electrically connected to another electrode of the DC high-voltage power supply; in the gas flow direction, the first metal mesh adsorption unit is located in front of the discharge unit and there is a distance between the first metal mesh adsorption unit and the discharge unit, or the first metal mesh adsorption unit is located behind the discharge unit and there is a distance between the first metal mesh adsorption unit and the discharge unit; the discharge bundle is disposed on a surface of the discharge unit facing the first metal mesh adsorption unit, and the discharge bundle of the discharge unit and the multi-layers of the metal mesh of the first metal mesh adsorption unit form an electric field.

[0049] Further, in the gas particulate matter purification apparatus according to the present invention, the first metal mesh adsorption unit further comprises a non-metallic rod disposed on an end surface of the multi-layer metal mesh facing the discharge unit, and the non-metallic rod senses the high voltage of the discharge bundle and forms an induced electric field with the multi-layer metal mesh.

[0050] Further, in the gas particulate matter purification apparatus according to the present invention, the two first metal mesh adsorption units comprise non-metallic rods; the multi-layer metal mesh comprises a first end surface facing the discharge unit and a second end surface facing away from the discharge unit; the non-metallic rods are disposed on the first end surface of the multi-layer metal mesh; the non-metallic rods sense the high voltage of the discharge electrode and form an induced electric field with the multi-layer metal mesh.

[0051] Further, in the gas particulate matter purification apparatus according to the present invention, the non-metallic rods are made of nylon.

[0052] Further, in the gas particulate matter purification apparatus according to the present invention, the gas particulate matter purification apparatus further comprises a second metal mesh adsorption unit comprising a stacked multi-layer metal mesh; in the gas flow direction, the first metal mesh adsorption unit is disposed on one side of the discharge unit, the second metal mesh adsorption unit is located on the other side of the discharge unit, and there is a distance between the second metal mesh adsorption unit and the discharge unit.

[0053] Further, in the gas particulate matter purification apparatus according to the present invention, the multi-layer metal mesh of the second metal mesh adsorption unit is electrically connected to one electrode of a DC high-voltage power supply.

[0054] Further, in the gas particulate matter purification apparatus according to the present invention, the multi-layer metal mesh of the second metal mesh adsorption unit is not energized and configured to physically adsorb particulate matter in the gas. Further, in the gas particulate matter purification apparatus according to the present invention, the discharge bundle comprises a plurality of metal wires and / or conductive non-metallic wires.

[0055] Further, the discharge bundle comprises n metal wires and / or conductive non-metallic wires, wherein n is greater than or equal to 1,000.

[0056] Further, in the gas particulate matter purification apparatus according to the present invention, the discharge bundle satisfies at least one of the following conditions: (1) the discharge bundle comprises n metal wires and / or conductive non-metallic wires, wherein n is greater than or equal to 1,000; (2) the diameter of the metal wires is 0.1 to 100 µm; (3) the diameter of the conductive non-metallic wires is 0.1 to 100 µm.

[0057] Further, in the gas particulate matter purification apparatus according to the present invention, the discharge bundle satisfies one or two of the following conditions: (1) the discharge bundle comprises 5,000 to 200,000 metal wires and / or conductive non-metallic wires; preferably the discharge bundle comprises 5,000 to 80,000 metal wires and / or conductive non-metallic wires; or the discharge bundle comprises 10,000 to 80,000 metal wires and / or conductive non-metallic wires. (2) the diameter of the metal wire is 5 to 100 µm; (3) the diameter of the conductive non-metallic wire is 5 to 100 µm.

[0058] Further, in the gas particulate matter purification apparatus according to the present invention, the metal wire comprises stainless steel fiber wire, more preferably, the diameter of a singlefiberof the stainless steel fiber wire is 5 to 100 µm.

[0059] Further, in the gas particulate matter purification apparatus according to the present invention, the conductive non-metallic wire is a carbon fiber wire, and the diameter of a single fiber of the carbon fiber wire is 5 to 100 µm.

[0060] Further, in the gas particulate matter purification apparatus according to the present invention, the discharge unit comprises at least one discharge electrode group, wherein the discharge electrode group comprises a plurality of circumferentially arranged discharge bundles; preferably, the discharge unit comprises a plurality of coaxially arranged discharge electrode groups of different radii. The discharge electrode group comprises a plurality of discharge bundles, which improves the corona discharge efficiency compared to a single discharge bundle. Furthermore, the circumferential arrangement of multiple discharge bundles results in more uniform discharge, which is beneficial for improving the efficiency of subsequent particle removal.

[0061] Further, in the gas particulate matter purification apparatus according to the present invention, the extended line of the plurality of circumferentially arranged discharge bundles in the discharge electrode assembly form an angle with the axis of the discharge electrode assembly. Preferably, the angle is 10 to 85°. the discharge direction of the discharge bundle circumferentially arranged in the discharge electrode group is inclined relative to the axial discharge, further improving discharge efficiency and consequently improving the efficiency of subsequent particle removal. Further, in the gas particulate matter purification apparatus according to the present invention, the plurality of circumferentially arranged discharge bundles in the discharge electrode group are positioned in the axial direction of the discharge electrode group.

[0062] Further, in the gas particulate matter purification apparatus according to the present invention, the voltage of the front discharge electrode assembly ranges from -3kV to -60kV.

[0063] Further, in the gas particulate matter purification apparatus according to the present invention, the discharge bundle comprises a plurality of metal wires and / or non-metal wires, one end of the plurality of metal wires and / or conductive non-metallic wires are fixed together to form a fixed end, and the other end is a free end facing the first metal mesh adsorption unit.

[0064] Further, in the gas particulate matter purification apparatus according to the present invention, the front discharge electrode assembly further comprises a support plate, and the fixed end of the discharge bundle is fixed to the support plate.

[0065] According to an eleventh aspect of the present invention, the present invention provides along-life and low-cost exhaust gas treatment device for a combustion engine. The exhaust gas treatment device comprises a DPF unit. The exhaust gas treatment device further comprises a large particle filter unit. In a gas flow direction, the large particle filter device is in fluid communication with the DPF unit and is located in front of the DPF unit, and the large particle filter unit is the gas particulate matter purification apparatus described above.

[0066] Further, the exhaust gas treatment device for a combustion engine according to the present invention further comprises a catalytic oxidation unit. The catalytic oxidation unit is disposed between the large particle filter unit and the DPF unit, and is in fluid communication with the DPF unit and the large particle filter unit respectively.

[0067] Further, the exhaust gas treatment device for a combustion engine according to the present invention further comprises a denitration unit. The denitration unit is configured to perform denitrification treatment on the exhaust gas treated by the DPF unit.

[0068] In the present invention, the gas comprises one of air, engine exhaust, cooking fume, processing equipment exhaust, industrial exhaust, and boiler flue gas.

[0069] The beneficial effects of the present invention are as follows. In the gas particulate matter purification apparatus provided by the first aspect of the present invention, in the gas flow direction, the front discharge electrode assembly is located in front of the adsorption unit and there is a distance between the front discharge electrode assembly and the adsorption unit. The front discharge electrode assembly includes at least one front discharge electrode connected to a DC high-voltage power supply. The adsorption unit includes at least one adsorption electrode and at least one discharge electrode, and the discharge electrode and the adsorption electrode form an adsorption electric field. The discharge bundle in the front discharge electrode assembly discharges to charge the particles in the gas, improving the charging efficiency of the particles. The charged particles enter the adsorption electric field at the rearpart for electric field treatment. The charged particles in the gas are adsorbed on the adsorption electrode. The particles include, but are not limited to, viruses, bacteria, and radioactive aerosols. These particles and aerosols containing viruses, bacteria, and radioactive substances are removed from the gas through electric field treatment, obtaining the clean gas free of bacteria, radiation and virus, achieving the desired gas purification effect.

[0070] In addition, the gas particulate matter purification apparatus and gas treatment system provided by the first aspect of the present invention can efficiently adsorb nano-sized particles, which include viruses and bacteria ranging in size from tens to hundreds of nanometers.

[0071] In the gas particulate matter purification system provided by the present invention, after the gas flows through the gas particulate matter purification apparatus, micron-sized and nano-sized particles can be removed from the gas and the removal efficiency of particles larger than 100 nanometers can reach more than 99.99%. After the gas is purified by the gas particulate matter purification apparatus, the clean gas free of bacteria, radiation and virus can be obtained.

[0072] The front discharge electrode provided in the eighth aspect of the present invention has the following technical effects: (1) The discharge bundle in the front discharge electrode assembly includes thousands of metal wires and / or conductive non-metallic wires. The discharge bundle is fixed on the support plate, having a brush-like structure. The discharge bundle generates corona discharge. The tip of each fiber at the free end serves as a discharge point, significantly improving the discharge effect, enhancing the charging efficiency of particles in the gas, and effectively reducing the generation of ozone to almost negligible level. (2) The front discharge electrode assembly and the adsorption unit in the rear part, such as the adsorption unit in the electrostatic dust removal apparatus, are combined to remove particulate matter from the gas. The discharge bundle of the front discharge electrode assembly, when applied with a voltage, is used to discharge so as to charge at least a part of particulate matter in the gas flowing through it. The gas in which a part of particulate matter is charged flows into the adsorption unit for electrostatic particle removal treatment, the charged particulate matter enters an adsorption electric field in the rear part for electric field treatment, and the charged particulate matter in the gas is adsorbed on the adsorption electrode. The particulate matter includes but is not limited to viruses, bacteria, aerosols containing radiation and other pollutants. After the electric field treatment, the particulate matter and aerosol containing viruses, bacteria, and radiation in the gas are removed, and the clean gas free of bacteria, radiation and virus can be obtained. (3) The front discharge electrode assembly provided by the present invention also has the following advantages: Under the same purification efficiency requirements, when compared to a single electrode rod or electrode wire combined with the same adsorption unit for gas particulate matter purification, the voltage required to apply to the front discharge electrode assembly of the present invention, when combined with the same adsorption unit, is much lower than that required for a single electrode rod or electrode wire. Thus, the present invention has the advantages of low energy consumption and low cost, and effectively reducing the generation of ozone to almost negligible level.

[0073] The gas particulate matter purification apparatus provided by the ninth aspect of the present invention can adsorb particles larger than 30nm, and the removal efficiency of particles larger than 100nm can reach more than 99.99%, so it can kill bacteria and virus particles in the gas.

[0074] The gas particulate matter purification apparatus provided by the tenth aspect of the present invention has the following technical effects: (1) The gas particulate matter purification apparatus provided by the present invention can efficiently adsorb large particles in the gas, such as micron-sized particles, with the removal efficiency of at least 70 to 80%. The large particles include dust and water vapor. (2) The discharge bundle in the front discharge electrode assembly provided by the present invention includes thousands of metal wires and / or conductive non-metallic wires. The discharge bundle is fixed on the support plate, having a brush-like structure. The discharge bundle generates corona discharge, the tip of each fiber at the free end serves as a discharge point, significantly improving the discharge effect, enhancing the charging efficiency of particles in the gas, and effectively reducing the generation of ozone to almost negligible level. (3) In the present invention, after testing, under the same purification efficiency requirements, when compared to a single electrode rod or electrode wire combined with the same adsorption unit for gas particulate matter purification, the voltage required to apply to the front discharge electrode assembly of the present invention, when combined with the same adsorption unit, is much lower than that required for a single electrode rod or electrode wire. Thus, the present invention has the advantages of low energy consumption and low cost. (4) The gas particulate matter purification apparatus provided by the present invention can remove particulate matter in the gas. If the gas contains water vapor, the water vapor can also be effectively removed without causing a short circuit. This is because the water vapor in the gas is adsorbed in the multi-layer metal mesh, and there is a certain distance between the multi-layer metal mesh and the discharge bundle.

[0075] In the exhaust gas treatment device for a combustion engine provided by the eleventh aspect of the present invention, prior to the conventional DPF treatment, large particles are filtered in advance, and the large particle filter unit is used to remove some particulate matter above the micron level. This design can not only reduce the resistance of the DPF unit, thereby lowering backpressure, but also extend the lifespan of DPF and reduce costs. Specifically, in the existing exhaust treatment device, the DPF unit needs to be replaced every 6 months. In the present invention, the gas first flows through the large particle filter unit before entering the DPF unit, which can extend the service life of the DPF unit by more than 3 times, that is, the DPF unit needs to be replaced after used for more than 18 months, thereby saving costs and reducing fuel consumption and pollutant emissions. In addition, the manganese oxide catalyst provided by Chinese patent CN116809054A is used in the catalytic oxidation unit of the present invention for catalytic oxidation treatment, which can replace the DOC treatment process in the prior art and reduce costs.BRIEF DESCRIPTION OF THE DRAWINGS

[0076] Figure 1 is a schematic cross-sectional view of a gas particulate matter purification apparatus according to Example 1 of the present invention. Figure 2 is a schematic perspective view of an adsorption unit according to a first embodiment of Example 1 of the present invention. Figure 3 is a schematic cross-sectional view of the adsorption unit according to the first embodiment of Example 1 of the present invention, taken perpendicularly to the direction of the gas flow. Figure 4 is a schematic perspective view of an adsorption unit according to a second embodiment of Example 1 of the present invention. Figure 5 is a schematic perspective view of an adsorption unit according to a third embodiment of Example 1 of the present invention. Figure 6 is a schematic perspective view of an adsorption electrode portion of the adsorption unit in Figure 5. Figure 7 is a schematic perspective view of an discharge electrode portion of the adsorption unit in Figure 5. Figure 8 is a schematic diagram of the structure of a front discharge electrode assembly according to Example 2 of the present invention. Figure 9 is a schematic diagram of a discharge bundle according to Example 3 of the present invention. Figure 10 is a schematic diagram of a discharge bundle according to Example 4 of the present invention. Figure 11 is a first schematic diagram of the structure of a metal mesh apparatus according to Example 5 of the present invention. Figure 12 is a second schematic diagram of the structure of the metal mesh apparatus according to Example 5 of the present invention. Figure 13 is a third schematic diagram of the structure of the metal mesh apparatus according to Example 5 of the present invention. Figure 14 is a fourth schematic diagram of the structure of the metal mesh apparatus according to Example 5 of the present invention. Figure 15 is a fifth schematic diagram of the structure of the metal mesh apparatus according to Example 5 of the present invention. Figure 16 is a sixth schematic diagram of the structure of the metal mesh apparatus according to Example 5 of the present invention. Figure 17 is a seventh schematic diagram of the structure of the metal mesh apparatus according to Example 5 of the present invention. Figure 18 is a schematic diagram of the structure of a gas processor according to Example 7 of the present invention. Figure 19 is a schematic diagram of the structure of another gas processor according to Example 7 of the present invention. Figure 20 is a schematic diagram of a mask system for providing purified gas to the nose and mouth according to Example 10 of the present invention. Figure 21 is a schematic side view of Figure 20. Figure 22 is a schematic diagram of an exhaust gas treatment device for a combustion engine according to Example 14 of the present invention. DETAILED DESCRIPTION

[0077] The following detailed description of preferred embodiments of the present invention, combined with the accompanying drawings, provides a clearer understanding of the objectives, features, and advantages of the present invention. It should be understood that the embodiments illustrated in the accompanying drawings are not intended to limit the scope of the present invention, but rather to illustrate the essential spirit of the technical solutions of the present invention. In the following description, certain specific details are set forth for the purpose of illustrating the various disclosed embodiments to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other instances, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0078] Throughout this specification, references to "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. Therefore, the appearance of "in one embodiment" or "in an embodiment" in various places throughout this specification does not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments. In the following description, to clearly illustrate the structure and operation of the present invention, numerous directional terms will be used. However, terms such as "front," "rear," "left," "right," "outside," "inside," "outward," "inward," "upward," and "downward" should be understood as convenient terms and not as limiting.

[0079] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily require components to be absolutely horizontal or overhanging; rather, they may be slightly tilted. For example, "horizontal" simply refers to a direction that is more horizontal than "vertical" and does not necessarily mean that the structure must be completely horizontal; rather, it may be slightly tilted. It should also be noted that, unless otherwise specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be interpreted broadly. For example, they may refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.Example 1

[0080] The first example of the present invention provides a gas particulate matter purification apparatus capable of efficiently adsorbing nano-sized particles. Nano-sized particles include not only dust but also viruses and bacteria ranging in size from tens to hundreds of nanometers. Referring to Figure 1, the gas particulate matter purification apparatus 200 includes a front discharge electrode assembly 220 and an adsorption unit 230. Ina gas flow direction (direction of arrow A), the front discharge electrode assembly 220 is located in front of the adsorption unit 230, and there is a distance between the front discharge electrode assembly 220 and the adsorption unit 230. The front discharge electrode assembly 230 includes at least one discharge bundle 221 connected to a DC high-voltage power supply.

[0081] With this design, the discharge bundle 221 in the front discharge electrode assembly 220 discharges to charge particles in the gas, improving the particle charging efficiency. The charged particles enter the adsorption unit 230 in the rear partfor purification. The charged particles in the gas are deposited on the adsorption electrode. These particles include, but are not limited to, contaminants such as viruses, bacteria, and radioactive aerosols. The purification process removes the particles and aerosols containing viruses, bacteria and radiation in the gas, and clean gas free of bacteria, radiation and viruses can be obtained, thereby achieving the gas purification effect. In one embodiment of the present invention, referring to Figure 1, the adsorption unit 230 includes at least one grounded adsorption electrode 231 and at least one discharge electrode 232 for generating an adsorption electric field.

[0082] With this design, a voltage is applied between the adsorption electrode and the discharge electrode, resulting in more stable adsorption performance for the adsorption unit.

[0083] In one embodiment of the present invention, referring to Figure 1, an end part of the adsorption electrode 231 that is close to the front discharge electrode assembly 220 projects out from an end part of the discharge electrode 232 that is close to the front discharge electrode assembly; or the end part of the attracting electrode 231 that is close to the front discharge electrode assembly 220 and the end part of the discharge electrode 232 that is close to the front discharge electrode assembly 220 are located in a same plane perpendicular to the direction of gas flow. In other words, the end part of the adsorption electrode 231 that is close to the front discharge electrode assembly 220 is flush to the end part of the discharge electrode 232 that is close to the front discharge electrode assembly 220.

[0084] With this design, if the end part of the discharge electrode that is close to the front discharge electrode assembly projects out from the end part of the adsorption electrode and the discharge bundle has a negative high voltage, the discharge electrode will sense the high voltage of the discharge bundle to generate an induced voltage with a negative potential, and an induced electric field will exist between the discharge electrode and the discharge electrode. Therefore, by making the end part of the adsorption electrode that is close to the front discharge electrode assembly projecting out from or be flush to the end part of the discharge electrode that is close to the front discharge electrode assembly, it can be controlled whether there is no induced electric field between the discharge electrode and the adsorption electrode, or the induced electric field is too weak to have adverse effects on the adsorption electric field. This makes it easier to control the induced electric field by adjusting the distance between the adsorption unit and discharge unit.

[0085] In one embodiment of the present invention, referring to Figure 1, the discharge electrode 232 includes a first end of the discharge electrode that is close to the front discharge electrode assembly 220, and the adsorption electrode 231 includes a first end of the adsorption electrode that is close to the front discharge electrode assembly 220. The first end of the adsorption electrode is located in front of the first end of the discharge electrode. In other words, in the direction of gas flow, the gas first passes through the front discharge electrode assembly 220, then the first end of the adsorption electrode, and then the first end of the discharge electrode sequentially. It can also be understood as that the end part of the adsorption electrode 231 that is close to the discharge bundle 221 projects out from the end part of the discharge electrode 232.

[0086] Specifically, referring to Figure 1, the distance between the orthographic projection of first end of the discharge electrode on adsorption electrode 231 and the first end of the adsorption electrode is less than or equal to 10 cm, and if the distance is L2, 0<L2≤10cm. Preferably, referring to Figure 1, the distance between the orthographic projection of first end of the discharge electrode on adsorption electrode 231 and the first end of the adsorption electrode is less than or equal to 3 cm, and if the distance is L2, 0<L2≤3cm. A typical but non-limiting example of distances L2 is 0.5 cm, 1 cm, 2 cm, 3 cm, 4 cm, 5 cm, 6 cm, 7 cm, 8 cm, 9 cm, or 10 cm.

[0087] In one embodiment of the present invention, the gas particulate matter purification apparatus includes a first power supply and a second power supply. The two ends of the first power supply are electrically connected to the discharge bundle and the adsorption electrode respectively. The two ends of the second power supply are electrically connected to the discharge electrode and the adsorption electrode respectively. The adsorption electrode is grounded. This means that the discharge bundle is electrically connected to the negative electrode of the first power supply, the adsorption electrode is electrically connected to the positive electrode of the first power supply, the discharge electrode is electrically connected to the negative electrode of the second power supply, and the adsorption electrode is also electrically connected to the positive electrode of the second power supply. The adsorption electrode is grounded.

[0088] In one embodiment of the present invention, referring to Figure 1, the adsorption electrode 231 and the discharge electrode 232 are both hollow tubes of different diameters. The discharge electrode 232 and the adsorption electrode 231 are coaxially assembled and staggered in sequence from the axis toward the periphery. The vertical distance between the discharge electrode 232 and the adsorption electrode 231 is constant, and a gas flow channel is formed between the discharge electrode 232 and the adsorption electrode 231 to allow gas to pass through for electric field treatment. Specifically, referring to Figures 1-3, the cross-section of the hollow tube can be polygonal, and referring to Figure 4, the cross-section of the hollow tube can be circular.

[0089] For example, referring to Figure 4, the adsorption unit 100 includes a discharge electrode group and an adsorption electrode group for generating an electric field. In this example, the discharge electrode group includes discharge electrodes 11 and 12, and the adsorption electrode group includes adsorption electrodes 21, 22, and 23. Both the discharge electrode group and the adsorption electrode group include cylinders of different diameters. A plurality of cylinders are coaxially assembled and staggered in the following order from inside to outside: the adsorption electrode 21, discharge electrode 11, adsorption electrode 22, discharge electrode 12, and adsorption electrode 23.the distance among the adsorption electrode 21, discharge electrode 11, adsorption electrode 22, discharge electrode 12, and adsorption electrode 23 is the same. That is to say, adjacent cylinder walls are different electrodes and the distances between adjacent cylindrical electrodes are highly consistent. A gas flow channel 31 is formed between the adsorption electrode 21 and the discharge electrode 11, a gas flow channel 32 is formed between the discharge electrode 11 and the adsorption electrode 22, a gas flow channel 33 is formed between the adsorption electrode 22 and the discharge electrode 12, and a gas flow channel 34 is formed between the discharge electrode 12 and the adsorption electrode 23.

[0090] Preferably, the polygon is a hexagon or a rectangle. Preferably, the hexagon is a regular hexagon, and the rectangle is a square.

[0091] Specifically, referring to Figures 1-3, a plurality of discharge electrodes 232 are electrically connected together to form the discharge electrode, and a plurality of adsorption electrodes 231 are electrically connected together to form the adsorption electrode. For example, a plurality of first conductive rods 2321 are used to electrically connect a plurality of discharge electrodes 232 together, and a plurality of second conductive rods 2311 are used to electrically connect a plurality of adsorption electrodes 231 together. The first conductive rods 2321 and the second conductive rods 2311 are both disposed perpendicular to the axis of the cylinder and are both made of conductive material. One end of the first conductive rod 2321 is connected to the outer wall of the innermost discharge electrode, and the other end is connected to the inner wall of the outermost discharge electrode. One end of the second conductive rod 2311 is connected to the outer wall of the innermost adsorption electrode, and the other end is connected to the inner wall of the outermost adsorption electrode.

[0092] In one embodiment of the present invention, referring to Figure1, the hollow tube with the smallest diameter in the adsorption unit 230 is an inner adsorption electrode. The gas particulate matter purification apparatus 200 also includes a power source D', which is disposed within the inner adsorption electrode. It is understood that the hollow tube with the smallest diameter in the adsorption unit may also be the inner discharge electrode, and the power source D' may be disposed within the inner discharge electrode.

[0093] With this design, the power source D' (for example, a rechargeable battery) is cleverly disposed within the hollow tube of the inner discharge electrode or inner discharge electrode, thereby reducing the overall device size, and thus reducing material usage and saving costs.

[0094] In one embodiment of the present invention, referring to Figures 5-7, both the adsorption electrode 15 and the discharge electrode 25 are flat plates. The discharge electrodes 25 and the adsorption electrodes 15 are staggered in parallel, with the same distance formed there between. A gas flow channel is formed between the discharge electrode 25 and the adsorption electrode 15, allowing gas to pass through for electric field treatment.

[0095] Specifically, as shown in Figure 5, the adsorption unit includes an adsorption electrode portion 10 and a discharge electrode portion 20. As shown in Figure 6, the adsorption electrode portion 10 includes a first frame 14 and a plurality of parallel-disposed adsorption electrodes 15 connected to the first frame 14. The first frame 14 is a rectangular box including a first upper cover, a first lower cover, a first left plate, and a first right plate. The two ends of the adsorption electrodes 15 are connected to the first upper cover and the first lower cover, respectively. The adsorption electrodes 15 include an upper end portion 151, a middle portion 152, and a lower end portion 153 connected in sequence. The widths of the upper end portion 151 and the lower end portion 153 are both smaller than the width of the middle portion 152 of the adsorption electrode. In one embodiment, the widths of the first upper cover and the first lower cover are the same as the width of the middle portion 152. As shown in Figure 7, the discharge electrode section 20 includes a second frame 24 and a plurality of parallel-disposed discharge electrodes 25 connected to the second frame 24. The second frame is a rectangular box including a second upper cover, a second lower cover, a second left plate, and a second right plate. The two ends of the discharge electrodes 25 are connected to the second upper cover and the second lower cover, respectively. In one embodiment, the widths of the second upper cover and the second lower cover are smaller than the width of the discharge electrodes 25.

[0096] Specifically, referring to Figures 5-7, at least a portion of the discharge electrode portion 20 is disposed within the adsorption electrode portion 10. The adsorption electrode 15 and the discharge electrode 25 are both flat plates. A plurality of adsorption electrodes 15 and a plurality of discharge electrodes 25 are staggered in parallel, with the same distance formed between the adsorption electrode 15 and the discharge electrode 25.

[0097] Specifically, referring to Figures 5-7, a gap exists between the first frame 14 and the second frame 24, and the gap is the same as the distance between the adsorption electrode and the discharge electrode.

[0098] In one embodiment of the present invention, referring to Figure 1, the outermost adsorption electrode 231 in the adsorption unit 230 is an outer adsorption electrode. One end of the outer adsorption electrode extends to form an extension portion 2312, and the front discharge electrode assembly 220 is disposed within the extension portion 2312.

[0099] Specifically, referring to Figure 1, for example, the adsorption electrode 231 and the discharge electrode 232 are both hollow tubes of different diameters. The discharge electrode 232 and the adsorption electrode 231 are coaxially assembled and staggered in sequence from the axis toward the periphery. The hollow tube with the largest diameter in the adsorption unit 230 is an outer adsorption electrode. One end that isclose to the front discharge electrode assembly 230 and that is of the outer adsorption electrode extends to form an extension portion 2312 and the front discharge electrode assembly 220 is disposed within the extension portion 2312. In other words, the extension portion 2312 is sleeved outside the front discharge electrode assembly 220 at a certain distance.

[0100] Specifically, referring to Figures 5-7, for example, the adsorption electrode 15 and the discharge electrode 25 are both flat plates. The discharge electrodes 25 and the adsorption electrodes 15 are staggered in parallel. The outermost layer in the adsorption unit 230 is an outer adsorption electrode, i.e., the outer adsorption electrodes are located on both sides of the outer layer. One end that is close to the front discharge electrode assembly 230 and that is of either of the two outer adsorption electrodes extends to form an extension portion, respectively. The front discharge electrode assembly is disposed between the extension portions of the two outer adsorption electrodes.

[0101] With this design, the outer adsorption electrode can be used as a housing of the front discharge electrode assembly 220 and the adsorption unit 230, saving materials and simplifying the manufacturing process.

[0102] Preferably, referring to Figure 1, the vertical distance between the front discharge electrode assembly 220 and the extension portion 2312 is 5-150 mm. Preferably, referring to Figure 1, the vertical distance between the front discharge electrode assembly 220 and the extension portion 2312 is 5-20 mm. A typical but non-limiting example of vertical distances is 5 cm, 10 cm, 15 cm, 20 cm, 30 cm, 40 cm, 50 cm, 60 cm, 70 cm, 80 cm, 90 cm, 100 cm, 110 cm, 120 cm, 130 cm, 140 cm, or 150 cm.

[0103] In one embodiment of the present invention, referring to Figure 1, an insulating layer (not shown in figure) is provided on an inner wall of the extension portion2312, and the front discharge electrode assembly 220 is disposed within the insulating layer. There is a distance between the insulating layer and the front discharge electrode assembly 220.

[0104] Specifically, referring to Figure 1, for example, the adsorption electrode 231 and the discharge electrode 232 are both hollow tubes of different diameters. The discharge electrode 232 and the adsorption electrode 231 are coaxially assembled and staggered in sequence from the axis toward the periphery. The hollow tube with the largest diameter in the adsorption unit 230 is the outer adsorption electrode. One end that is close to the front discharge electrode assembly 230 and that is of the outer adsorption electrode extends to form an extension portion 2312. At least one portion of the insulating layer is sleeved on an inner wall of the extension portion 2312 of the outer adsorption electrode. The front discharge electrode assembly 220 is disposed within the insulating layer. In other words, the insulating layer is sleeved on the outside of the front discharge electrode assembly 220 with a certain distance formed there between.

[0105] Specifically, referring to Figures 5-7, for example, the adsorption electrode 15 and the discharge electrode 25 are both flat plates. The discharge electrodes 25 and the adsorption electrodes 15 are staggered in parallel. The outermost layer in the adsorption unit 230 is the outer adsorption electrode, i.e., the outer adsorption electrodes are located on both sides of the outermost layer. One end that is close to the front discharge electrode assembly 230 and that is of either of the two outer adsorption electrodes extends to form an extension portion. At least one portion of the insulating layer is disposed on the inner walls of the extension portions 2312 of the two outer adsorption electrodes. The front discharge electrode assembly is disposed between the two insulating layers.

[0106] With this design, the insulating layer can be made of plastic and connected to the inner walls of the extension portions 2312 of the outer adsorption electrodes. The insulating layer is disposed outside the front discharge electrode assembly 220, ensuring that the front discharge electrode assembly 220 only discharge to the adsorption unit 230, avoiding discharge to the surrounding area.

[0107] Preferably, referring to Figure 1, the vertical distance between the front discharge electrode assembly 220 and the insulating layer is 5-150 mm. Preferably, referring to Figure 1, the vertical distance between the front discharge electrode assembly 220 and the insulating layer is 5-20 mm. A typical but non-limiting example of the vertical distance is 5 cm, 10 cm, 15 cm, 20 cm, 30 cm, 40 cm, 50 cm, 60 cm, 70 cm, 80 cm, 90 cm, 100 cm, 110 cm, 120 cm, 130 cm, 140 cm, or 150 cm.

[0108] It should be noted that the vertical distance between the front discharge electrode assembly and the extension portion is the vertical distance between the outermost discharge bundle in the front discharge electrode assembly and the extension portion, and the distance between the insulating layer and the front discharge electrode assembly is the vertical distance between the outermost discharge bundle in the front discharge electrode assembly and the insulating layer.

[0109] In one embodiment of the present invention, referring to Figure 1, the distance between the discharge electrode 232 and the adsorption electrode 231 is within a range of 30 mm or less; preferably, it is within a range of 10 mm or less; preferably, it is within a range of 2.5-10 mm, or it is within a range of 3-6 mm. A typical but non-limiting example of the distance is 0.1 mm, 0.25 mm, 0.5 mm, 1 mm, 2 mm, 2.5 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 15 mm, 20 mm, 25 mm, or 30 mm.

[0110] It should be noted that the distance between adjacent discharge electrodes 232 and adsorption electrodes 231 is the vertical distance, i.e., the inter-electrode spacing between the discharge electrodes 232 and adsorption electrodes 231 in the adsorption unit.

[0111] In one embodiment of the present invention, referring to Figure 1, the voltage between the discharge electrode 232 and adsorption electrode 231 ranges from -0.5 kV to -12 kV; preferably, the voltage between the discharge electrode 232 and adsorption electrode 231 ranges from -1 kV to -8 kV; preferably, the voltage between the discharge electrode 232 and adsorption electrode 231 ranges from -1 kV to -3 kV; preferably, the voltage between the discharge electrode 232 and adsorption electrode 231 ranges from -0.5 kV to -3 kV. A typical but non-limiting example of the voltage is 0.1 kV, 0.3 kV, 0.5 kV, 0.7 kV, 1 kV, 2 kV, 3 kV, 4 kV, 5 kV, 6 kV, 7 kV, 8 kV, 9 kV, 10 kV, 11 kV, or 12 kV.

[0112] In one embodiment of the present invention, referring to Figure 1, when the distance between the discharge electrode 232 and the adsorption electrode 231 is less than 10 mm, the voltage between the adsorption electrode 231 and the discharge electrode ranges from -0.5 to -12 kV, or from -0.5 to -1.2 kV.

[0113] It should be noted that when the vertical distance between adjacent discharge electrodes 232 and adsorption electrodes 231 is less than 10 mm, that is, when the inter-electrode spacing between the discharge electrodes 232 and adsorption electrodes 231 in the adsorption unit is less than 10 mm, the voltage between the adsorption electrode 231 and the discharge electrode ranges from -0.5 to -12 kV, or from -0.5 to -1.2 kV. The smaller the distance between the discharge electrodes 232 and adsorption electrodes 231 in the adsorption unit, the lower the required voltage; the larger the distance between the discharge electrodes 232 and adsorption electrodes 231 in the adsorption unit, the higher the required voltage. However, the relationship between the distance between the discharge electrodes 232 and adsorption electrodes 231 in the adsorption unit and the voltage is nonlinear. For example, if the distance between the discharge electrodes 232 and adsorption electrodes 231 is 1 mm, the voltage can be -0.5 kV; if the distance between the discharge electrodes 232 and adsorption electrodes 231 is 10 mm, the voltage can be -12 kV.

[0114] In one embodiment of the present invention, referring to Figure 1, the ratio of the discharge area of the front discharge electrode assembly 220 to the radial cross-sectional adsorption area of the adsorption unit 230 is less than 0.9. Preferably, the ratio of the discharge area of the front discharge electrode assembly 220 to the radial cross-sectional adsorption area of the adsorption unit 230 is 0.5-0.9. A typical but non-limiting example of the ratio is 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, or 0.9.

[0115] It should be noted that: If the front discharge electrode assembly has only one discharge bundle, the discharge area of the discharge electrode assembly is the area of that discharge bundle. It can be understood that the area of a discharge bundle can be the cross-sectional area of the free end of the discharge bundle perpendicular to the direction of gas flow. If the front discharge electrode assembly includes a plurality of discharge bundles, the discharge area of the front discharge electrode assembly can be understood as the area enclosed by the outermost discharge bundles. Referring to Figure 8, for example, the front discharge electrode assembly 20 includes two coaxially disposed discharge electrode groups 22 of different radii. Each discharge electrode group 22 includes a plurality of circumferentially disposed discharge bundles 21. The discharge bundles in the same circumferential direction form a circular shape. The radius of the outermost discharge electrode group is R. Then, the discharge area of the front discharge electrode assembly is πR 2< .

[0116] The radial cross-sectional adsorption area of the adsorption unit is the cross-sectional area of the adsorption unit perpendicular to the direction of gas flow. Since the gas flow passes through the front discharge electrode assembly first and then the adsorption unit, the radial cross-sectional adsorption area of the adsorption unit can be understood as the area of the end that faces the front discharge electrode assembly and that is of the adsorption unit. For example, the adsorption electrode and discharge electrode in the adsorption unit are both hollow tubes of different diameters. The discharge electrode and adsorption electrode are coaxially assembled and staggered in sequence from the axis toward the periphery. The radial cross-sectional adsorption area of the adsorption unit is the cross-sectional area of the hollow tube with the largest diameter. If the hollow tube is circular, the cross-sectional area is the area of the circle with the largest diameter. If the hollow tube is hexagonal, the cross-sectional area is the area of the outermost hexagon. For example, if both the adsorption electrodes and discharge electrodes are flat plates and are staggered in parallel, the radial cross-sectional adsorption area of the adsorption unit is the area of the rectangle enclosed by the outermost adsorption electrode.

[0117] In one embodiment of the present invention, referring to Figure 1, the voltage of the discharge bundle 221 is from -3 kV to -60 kV, and the radial cross-sectional adsorption area of the adsorption unit is from 0.001 m 2< to 0.5 m 2< . The explanation of the radial cross-sectional adsorption area of the adsorption unit can be referred to the above description.

[0118] Optionally, a typical but non-limiting example of the radial cross-sectional adsorption area of the adsorption unit is 0.001 m 2< , 0.005 m 2< , 0.01 m 2< , 0.05 m 2< , 0.04 m 2< , 0.08 m 2< , 0.1 m 2< , 0.2 m 2< , 0.3 m 2< , 0.4 m 2< , or 0.5 m 2< .

[0119] It should be noted that the smaller the radial cross-sectional adsorption area of the adsorption unit, the lower the required voltage of discharge bundle and the closer the discharge bundle is to the adsorption unit. The larger the radial cross-sectional adsorption area of the adsorption unit, the higher the required voltage of discharge bundle and the farther the discharge bundle is from the adsorption unit. However, the relationship between the radial cross-sectional adsorption area of the adsorption unit and the voltage of discharge bundle is nonlinear.

[0120] In one embodiment of the present invention, referring to Figure 1, the vertical distance L1 from the free end of the discharge bundle 221 to the first end of the adsorption electrode of the adsorption unit 230 is directly proportional to the vertical distance L3 from the discharge bundle 221 to the inner wall of the outermost adsorption electrode: L1=(0.7-3)×L3. Preferably, L1=(0.7-2)×L3. A typical but non-limiting example of the relationship between L1 and L3 is L1=0.7×L3, L1=0.8×L3, L1=0.9×L3, L1=1×L3, L1=1.5×L3, L1=2×L3, L1=2.5×L3, or L1=3×L3.

[0121] Specifically, for example, the vertical distance L1 from the free end of the discharge bundle 221 to the first end of the adsorption electrode of the adsorption unit 230 may range from 2 cm to 8 cm.

[0122] In one embodiment of the present invention, referring to FIG. 1, the flow rate range of the gas flowing through the gas particulate matter purification apparatus 200 for electric field treatment is from 0.2 to 2.0 m / s. Preferably, the flow rate of the gas flowing through the gas particulate matter purification apparatus 200 for electric field treatment is 1 m / s.

[0123] In one embodiment of the present invention, referring to Figure 1, the voltage range of the discharge bundle 221 is from -3 kV to -60 kV.

[0124] In one embodiment of the present invention, the thickness of the discharge electrode and / or the adsorption electrode is from 0.01 to 5 mm; preferably, the thickness is from 1.0 to 5 mm; preferably, the thickness is from 0.2 to 3 mm.

[0125] In one embodiment of the present invention, referring to Figure 1, the length of the gas flow channel is from 50 to 200 mm.

[0126] In one embodiment of the present invention, referring to Figure 1, the discharge electrode 232 and / or the adsorption electrode 231 are made of a metal material or a non-metallic conductive material. The non-metallic conductive material includes at least one of graphite, graphene, carbon nanotubes, carbon 60, carbon fiber, conductive carbon black, amorphous carbon, and ion-conductive ceramics, or a composite material containing at least one of graphite, graphene, carbon nanotubes, carbon 60, carbon fiber filaments, conductive carbon black, amorphous carbon, and ion-conductive ceramics. The metal material includes stainless steel.

[0127] In one embodiment of the present invention, referring to Figure 1, a gas particulate matter purification apparatus 200 includes a gas inlet 2111 and a gas outlet 2121. The front discharge electrode assembly 220 is disposed near the gas inlet 2111, and the adsorption unit 230 is disposed near the gas outlet 2121. A metal mesh is provided at each of the gas inlet 2111 and the gas outlet 2121 to shield electromagnetic signals and effectively prevent electromagnetic waves from being exposed The metal mesh allows gas to pass through.

[0128] In one embodiment of the present invention, the gas particulate matter purification apparatus also includes a power supply. The adsorption unit includes a first end located near the front discharge electrode assembly and a second end located away from the front discharge electrode assembly. The power supply is disposed behind the second end of the adsorption unit.

[0129] In one embodiment of the present invention, the gas particulate matter purification apparatus also includes a gas distribution unit. Gas passes through the gas distribution unit, the front discharge electrode assembly, and the adsorption unit in sequence in the gas flow direction.

[0130] In the gas particulate purification system provided in this example, after gas passes through the gas particulate purification apparatus, micron- and nano-sized particles can be removed, and a removal rate of over 99.99% can be achieved for particles larger than 100 nanometers. Clean gas produced by the gas particulate purification apparatus is free of bacteria, radiation and viruses.Example 2

[0131] As shown in Figure 1, this example provides a front discharge electrode assembly that can be used in the gas particulate purification apparatus described in Example 1. The common features of this example and Example 1 are not described again; only the differences are described. The front discharge electrode assembly 220 includes at least one discharge bundle 221. The discharge bundle 221 includes a plurality of metal wires and / or conductive non-metallic wires (discharge material). One end of the plurality of metal wires and / or non-metal wires is fixed together to form a fixed end, and the other end is a free end. The plurality of metal wires and / or non-metallic wires at the free end are dispersed. The front discharge electrode assembly 220 also includes a support plate 222. The fixed end of the discharge bundle 221 is secured to the support plate 222. The support plate 222 is made of a conductive material. The discharge bundle of the front discharge electrode assembly is applied with a voltage for discharge. The discharge bundle 221 is secured to a conductive support plate 222. This design not only secures one or more discharge bundles, but also connects the discharge bundle 221 to the DC power supply when the support plate is electrically connected to the DC power supply. In the case of a plurality of discharge bundles, they can be simultaneously electrically connected to a single power supply, resulting in a simple and convenient structure.

[0132] In one embodiment of the present invention, referring to Figure 1, the discharge bundle 221 includes n metal wires and / or conductive non-metallic wires, where n is greater than or equal to 1,000; preferably, the discharge bundle 221 includes more than 5,000 metal wires and / or conductive non-metallic wires; preferably, the discharge bundle 221 includes more than 10,000 metal wires and / or conductive non-metallic wires; preferably, the discharge bundle 221 includes 10,000 to 200,000 metal wires and / or conductive non-metallic wires; preferably, the discharge bundle 221 includes 10,000 to 80,000 metal wires and / or conductive non-metallic wires. A typical but non-limiting example of the number of the metal wires and / or the conductive non-metallic wires is 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. With this design, a discharge bundle composed of thousands of metal wires and / or conductive non-metallic wires is secured to a support plate, having a brush-like structure. The discharge bundle generates corona discharge, with the tip of each wire at the free end serving as a discharge point, significantly improving the discharge effect and effectively reducing the generation of ozone to almost negligible level. In the present invention, testing has shown that, under the same purification efficiency requirements, when compared to a single electrode rod or electrode wire combined with the same adsorption unit for gas particulate matter purification, the voltage required to apply to the front discharge electrode assembly of the present invention, when combined with the same adsorption unit, is much lower than that required for a single electrode rod or electrode wire. Thus, the present invention has the advantages of low energy consumption and low cost.

[0133] In one embodiment of the present invention, the diameter range of the metal wire is from 0.1 to 100 µm. Preferably, the diameter range of the metal wire is from 5 to 100 µm. A typical but non-limiting example of metal wire diameter is 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 diameter range of a single fiber of the stainless steel fiber wire may be from 0.1 to 100 µm, or the diameter range of a single fiber of the stainless steel fiber wire may be from 5 to 100 µm. The carbon content of the discharge material is from 90 to 99.9%. A typical but non-limiting carbon content is 90%, 93%, 96%, or 99%.

[0134] In one embodiment of the present invention, the diameter range of the conductive non-metallic wire is from 0.1 to 100 µm. Preferably, the diameter range of the conductive non-metallic wire is from 5 to 100 µm. A typical but non-limiting example of the diameter of the conductive non-metallic wire is 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 conductive non-metallic wire includes, but is not limited to, carbon fiber filaments, and the diameter range of a single fiber of the conductive non-metallic wire may be from 0.1 to 100 µm; the diameter range of a single fiber of the carbon fiber filament may be from 5 to 100 µm.

[0135] In the present invention, the discharge bundle of the front discharge electrode assembly is applied with a voltage to discharge, ionizing the gas and charging the particulate matter in the gas. If an adsorption unit is further provided, the charged particulate matter enters the adsorption unit and is adsorbed, thereby removing the particulate matter. When the radial cross-sectional area of the adsorption unit is small, the front discharge electrode assembly can include a single discharge bundle, positioned corresponding to the center of the adsorption electric field. The discharge area of one discharge bundle is sufficient to radiate the entire adsorption unit, ensuring the required adsorption purification efficiency. When the radial cross-sectional area of the adsorption unit is large, the front discharge electrode assembly may include a plurality of discharge bundles. These discharge bundles simultaneously perform corona discharge to enhance particle charging efficiency and subsequent adsorption effect of the adsorption electric field.

[0136] In the present invention, the corona discharge on the front discharge electrode assembly utilizes a negative DC high voltage within a voltage range of -3kV to -60kV. Furthermore, the voltage range is -3kV to -25kV, -4kV to -15kV, -8kV to -20kV, - 10kV to -20kV, -15kV to -18kV, or -10kV to -23kV. A typical but non-limiting example of the voltage is -3kV, -3.5kV, -4kV, -5kV, -6kV, -7kV, -8kV, -9kV, -10kV, -12kV, -13kV, -14kV, -15kV, -16kV, -17kV, -18kV, -19kV, -20kV, -21kV, 22kV, - 23kV, -24kV, -25kV, -26kV, 27kV, -28kV, -29kV, 30kV, -35kV, -40kV, -45kV, - 50kV, -55kV, or -60kV.

[0137] In one embodiment of the present invention, the front discharge electrode assembly and the adsorption unit constitute a gas particulate purification apparatus for adsorbing particulate matter from gas to produce clean gas free of bacteria, radiation and viruses. The front discharge electrode assembly is located in front of the adsorption unit in the gas flow direction, and there is a distance between the front discharge electrode assembly and the adsorption unit. The discharge bundle in the front discharge electrode assembly discharges to charge at least a part of the particulate matter in the flowing gas. The gas containing at least a part of the charged particulate matter enters the adsorption unit for electrostatic particle removal.

[0138] The front discharge electrode assembly provided in this example can further improve discharge efficiency, thereby enhancing the efficiency of subsequent particle removal. When it is used in a gas particulate purification system, the efficiency of removing micron- and nano-sized particles can be further improved.Example 3

[0139] As shown in Figure 8, this example provides another front discharge electrode assembly 20 that can be used in the gas particulate matter purification apparatus of Example 1. The common features between this example and Example 2 are not repeated again; only the differences are described. The front discharge electrode assembly 20 includes at least one discharge electrode group 22. The discharge electrode group 22 includes a plurality of circumferentially arranged discharge bundles 21. It can be understood that the discharge bundles 41 in the discharge electrode group 22 are arranged in a circular pattern. The front discharge electrode assembly 20 also includes a support plate 23, the support plate 23 has a circular shape, and the fixed ends of the discharge bundles 21 are arranged on the support plate 23. A plurality of discharge electrode 22 are connected to a DC high voltage power supply to enable the front discharge electrode assembly 20 to be electrically connected to the DC high voltage power supply.

[0140] Continuing with Figure 8, the front discharge electrode assembly 20 includes a plurality of coaxially arranged discharge electrode groups 22 of different radii. For example, in this embodiment, the front discharge electrode assembly 20 includes two discharge electrode groups 22. The discharge bundles 41 in each discharge electrode group 22 are arranged in a circular pattern. The two discharge electrode groups 22 are located in circles having different radii but the same center.

[0141] In this example, as shown in Figure 9, the discharge bundle 21 is arranged in the axial direction BB' of the discharge electrode group 22. That is, the extended line of the discharge bundle is parallel to the axis. In other words, in this example, the discharge bundle 21 is arranged in the gas flow direction.

[0142] In the present invention, the discharge electrode group includes a plurality of discharge bundles, which improves the corona discharge efficiency compared to a single discharge bundle. Furthermore, the circumferential arrangement of multiple discharge bundles results in more uniform discharge, which is beneficial for improving the efficiency of subsequent particle removal.Example 4

[0143] This example provides another front discharge electrode assembly, differing from Example 3 in the arrangement orientation of the discharge bundles in the front discharge electrode assembly. Other common features may refer to Example 3.

[0144] In this example, the front discharge electrode assembly 20' includes a discharge electrode group 22'. The discharge group 22' includes a plurality of circumferentially arranged discharge bundles 21'. The discharge bundles 21' in the discharge electrode group 22' are arranged in a circular pattern.

[0145] Referring to Figure 10, in this example, the extended line of the discharge bundle 21 forms an angle α with the axis BB' of the discharge electrode group. Preferably, the angle α is from 10 to 85°.

[0146] In the present invention, the discharge bundles circumferentially arranged in the discharge electrode group discharge inan inclined state relative to the axis, which can further improve the discharge efficiency and thus improving the efficiency of subsequent particle removal.Example 5

[0147] This example provides a metal mesh apparatus for adsorbing and removing large particulate matter, including micron-sized particles, in the gas. Referring to Figures 11 and 12 (the hollow arrow indicates the direction of gas flow), the metal mesh apparatus 400 includes a metal mesh front discharge electrode assembly 410 and a first metal mesh adsorption unit 420. The metal mesh front discharge electrode assembly 410 includes at least one discharge bundle 411 connected to a DC high-voltage power supply. The first metal mesh adsorption unit 420 includes a first multi-layer metal mesh 421 stacked together and grounded. In the gas flow direction, the first metal mesh adsorption unit 420 is located in front of the metal mesh front discharge electrode assembly 410, and there is a distance between the first metal mesh adsorption unit 420 and the metal mesh front discharge electrode assembly 410 (Figure 11); or the first metal mesh adsorption unit 420 is located behind the metal mesh front discharge electrode assembly 410, and there is a distance between the first metal mesh adsorption unit 420 and the metal mesh front discharge electrode assembly 410 (Figure 12). The discharge bundle 411 of the metal mesh front discharge electrode assembly 410 is directed toward the first metal mesh adsorption unit 420. The discharge bundle 411 and the first multi-layer metal mesh 421 form an electric field. The gas passes through the electric field between the first metal mesh adsorption unit 420 and the metal mesh front discharge electrode assembly 410 for electric field purification. Micron-sized particles, i.e., large particles, are removed from the gas, with a removal efficiency of at least 70 to 80%.

[0148] In one embodiment of the present invention, referring to Figures 11 and 12, the discharge bundle 411 is electrically connected to the negative pole of a DC high-voltage power supply, the first multi-layer metal mesh 421 is electrically connected to the positive pole of the DC high-voltage power supply, and the first multi-layer metal mesh 421 is grounded. The first multi-layer metal mesh 421 has a zero potential, creating a negative potential difference between the discharge bundle and the multi-layer metal mesh. The discharge bundle 411 has a negative high-voltage potential, and an electric field is formed between the discharge bundle and the multi-layer metal mesh.

[0149] In one embodiment of the present invention, the multi-layer metal mesh may be a stainless steel mesh.

[0150] In one embodiment of the present invention, referring to Figures 13 and 14 (the hollow arrow indicates the direction of gas flow), the first metal mesh adsorption unit 420 further includes non-metallic rods 422. The non-metallic rods 422 are disposed on an end surface of the first multi-layer metal mesh 421 facing the metal mesh front discharge electrode apparatus 410. Specifically, the first multi-layer metal mesh 421 includes a first end surface 4211 facing the metal mesh front discharge electrode assembly 410 and a second end surface 4212 facing away from the metal mesh front discharge electrode assembly 410. The non-metallic rods 422 are disposed on the first end surface 4211 of the first multi-layer metal mesh 421. The non-metallic rods 422 sense the high voltage of the discharge bundle 411 and form an induced electric field with the first multi-layer metal mesh 421. Upon sensing the high voltage, the non-metallic rods 422 discharge in the gas and charges particulate matter in the gas. These charged particulate matter are then adsorbed by the first multi-layer metal mesh 421, thereby removing large particulate matter from the gas and further improving gas purification efficiency.

[0151] In one embodiment of the present invention, referring to Figures 13 and 14, the discharge bundle 411 is electrically connected to the negative pole of a DC high-voltage power supply. The discharge bundle 411 has a negative high-voltage potential. The non-metallic rods 422 obtains a negative voltage by induction. The first multi-layer metal mesh 421 is electrically connected to the positive pole of the DC high-voltage power supply. The first multi-layer metal mesh 421 is grounded, and the first multi-layer metal mesh 421 has a zero potential. A negative potential difference is formed between the non-metallic rods 422 and the first multi-layer metal mesh 421, thereby generating an induced electric field between the non-metallic rods 422 and the first multi-layer metal mesh 421.

[0152] Specifically, referring to Figure 13, in the gas flow direction, the first metal mesh adsorption unit 420 is located in front of the metal mesh front discharge electrode assembly 410, and there is a distance between the first metal mesh adsorption unit 420 and the metal mesh front electrode assembly 410. The first metal mesh adsorption unit 420 also includes a non-metallic rod 422. The first multi-layer metal mesh 421 includes a first end surface 4211 facing the metal mesh front discharge electrode assembly 410 and a second end surface 4212 facing away from the metal mesh front discharge electrode assembly 410. The non-metallic rod 422 is disposed on the first end surface 4211 of the first multi-layer metal mesh 421. The non-metallic rod 422 senses the high voltage of the discharge bundle 411 and forms an induced electric field with the first multi-layer metal mesh 421.

[0153] Specifically, referring to Figure 14, in the gas flow direction, the first metal mesh adsorption unit 420 is located behind the metal mesh front discharge electrode assembly 410, and there is a distance between the first metal mesh adsorption unit 420 and the metal mesh front electrode assembly 410. The first metal mesh adsorption unit 420 also includes a non-metallic rod 422.The first multi-layer metal mesh 421 includes a first end face 4211 facing the metal mesh front discharge electrode assembly 410 and a second end face 4212 facing away from the metal mesh front discharge electrode assembly 410, and the non-metallic rod 422 is arranged on the first end face 4211 of the first multi-layer metal mesh 421. The non-metallic rod 422 senses the high voltage of the discharge bundle 411 and forms an induced electric field with the first multi-layer metal mesh 421.

[0154] In one embodiment of the present invention, the non-metallic rod may be made of nylon.

[0155] In one embodiment of the present invention, referring to Figure 15, the metal mesh apparatus 400 further includes a second metal mesh adsorption unit 430, which includes a second multi-layer metal mesh 431. In the gas flow direction, the first metal mesh adsorption unit 420 is disposed on one side of the metal mesh front discharge electrode assembly 410, and the second metal mesh adsorption unit 430 is disposed on the other side of the metal mesh front discharge electrode assembly 410. Referring to Figure 5 (the hollow arrow indicates the direction of gas flow), the second metal mesh adsorption unit 430 is disposed in the rear part of the metal mesh device shown in Figure 11. That is to say, the second metal mesh adsorption unit 430 is disposed behind the metal mesh front discharge electrode assembly 410, and the first metal mesh adsorption unit 420 is disposed in front of the metal mesh front electrode assembly 410.The metal mesh front discharge electrode assembly 410 is positioned between the two metal mesh adsorption units (the first metal adsorption unit 420 and the second metal adsorption unit 430), and there is a distance between themetal mesh front discharge electrode assembly 410 and the first metal adsorption unit 420, and between the metal mesh front discharge electrode assembly 410 and the second metal adsorption unit 430, respectively. The discharge bundle 411 is directed toward the first multi-layer metal mesh 421, and forms an electric field with the first multi-layer metal mesh 421. The gas passes through the electric field between the first metal adsorption unit 420 and the metal mesh front discharge electrode assembly 410 for electric field purification, removing most micron-sized particles, e.g. large particles, from the gas. After the large particles have been removed by the electric field, the gas enters the second multi-layer metal mesh 431 of the second metal adsorption unit 430, and particles in the gas are further adsorbed due to physical adsorption of the multi-layer metal mesh, thereby improving removal efficiency.

[0156] In one embodiment of the present invention, as shown in Figure 15, the second multi-layer metal mesh 431 of the second metal mesh adsorption unit 430 is electrically connected to the positive pole of a DC high-voltage power supply. Charged particulate matter that remain unadsorbed after the electric field purification process between the first metal adsorption unit 420 and the metal mesh front discharge electrode assembly 410 are then adsorbed by the positively charged second multi-layer metal mesh 431, thereby further improving particle removal efficiency.

[0157] In one embodiment of the present invention, the second metal adsorption unit 430 may also be de-energized. In this case, when gas flows through the second metal adsorption unit 430, the multi-layer metal mesh physically adsorbs particulate matter from the gas.

[0158] In one embodiment of the present invention, referring to Figure 16, the metal mesh apparatus 400 further includes a second metal mesh adsorption unit 430, and the second metal mesh adsorption unit 430 includes a second multi-layer metal mesh 431. In the gas flow direction, referring to Figure 16 (the hollow arrow is the direction of the gas flow direction), the second metal mesh adsorption unit 430 is disposed in in the front part of the metal mesh device provided in Figure 12, that is, the second metal mesh adsorption unit 430 is disposed in front of the metal mesh front discharge electrode assembly 410, and the first metal mesh adsorption unit 420 is disposed behind the metal mesh front electrode assembly 410. The metal mesh front electrode assembly 410 is disposed between the two metal mesh adsorption units (the first metal adsorption unit 420 and the second metal mesh adsorption unit 430), andthere is a distance between the metal mesh front discharge electrode assembly 410 and the first metal adsorption unit 420, and between the metal mesh front discharge electrode assembly 410 and the second metal adsorption unit 430, respectively. The discharge bundle 411 is directed toward the first multi-layer metal mesh 421, and forms an electric field with the discharge bundle 411. The gas first enters the second metal adsorption unit 430, a part of large particles in the gas can be adsorbed due to physical adsorption of the second multi-layer metal mesh 431. The second multi-layer metal mesh also acts as a gas distributor, allowing the gas to more evenly pass through the electric field between the first metal adsorption unit 420 and the metal mesh front discharge electrode assembly 410. In this electric field, the gas is further purified, and micron-sized particles in the gas are removed, thereby improving the particle adsorption capacity and removal efficiency.

[0159] In one embodiment of the present invention, referring to Figure 17 (the hollow arrow indicates the direction of gas flow), based on the metal mesh apparatus shown in Figure 5, the first metal adsorption unit 420 includes non-metallic rods 422. The first multi-layer metal mesh 421 includes a first end surface facing the metal mesh front discharge electrode assembly 410 and a second end surface facing away from the metal mesh front discharge electrode assembly 410. The first non-metallic rods 422 are disposed on the first end surface of the first multi-layer metal mesh 421. The first non-metallic rods 422 sense the high voltage of the discharge bundle 411 and form an induced electric field with the first multi-layer metal mesh 421. Under the combined adsorption of the induced electric field, the electric field formed between the first multi-layer metal mesh 421 and the discharge bundle 411, and the second metal adsorption unit 430, large particles in the gas are effectively removed, with a removal efficiency exceeding 80%.

[0160] It should be noted that, in the present invention, the distance between the first metal mesh adsorption unit 420 and the metal mesh front discharge electrode assembly 410 is the vertical distance between the free end of the discharge bundle 411 on the metal mesh front discharge electrode assembly 410 and the first multi-layer metal mesh 421. In one embodiment of the present invention, the metal mesh front discharge electrode assembly includes at least one discharge bundle connected to a DC high-voltage power supply. The features of the metal mesh front discharge electrode assembly can refer to the features of the front discharge electrode assembly in Examples 1 to 4, and the features of the discharge bundle can refer to the features of the discharge bundle in Examples 1 to 4.Example 6

[0161] This example provides a gas particulate matter purification apparatus. Based on the apparatus provided in Examples 1-4, and the gas particulate matter purification apparatus further includes the metal mesh apparatus of Example 5. In the gas flow direction, the metal mesh apparatus is disposed in front of the front discharge electrode assembly in Examples 1-4.

[0162] The gas first passes through the metal mesh apparatus to remove large particulate matter, and then enters the rear part of the gas particulate purification apparatus (the apparatus provided in Examples 1-4) to further remove nano-sized particles. This design allows large particulate matter to be adsorbed by the metal mesh apparatus, extending the life of the rear part of the gas particulate purification apparatus. The gas particulate purification apparatus provided in this example can remove over 99.99% of particulate matter from the gas, producing clean gas free of bacteria, radiation, and virus.Example 7

[0163] This example provides a gas processor including one or more gas particulate matter purification apparatus according to any example or embodiment of Examples 1 to 6. The radial cross-section of the gas particulate matter purification apparatus can be hexagonal, and a plurality of gas particulate matter purification apparatuses can be arranged in a honeycomb pattern. The radial cross-section of the gas particulate matter purification apparatus can be rectangular, and a plurality of gas particulate matter purification apparatuses can be arranged in a matrix.

[0164] In one embodiment of the present invention, as shown in Figure 18, a gas processor 2000 is provided. The gas processor includes seven gas particulate matter purification apparatuses 200 according to any example or embodiment of Examples 1 to 6. The seven gas particulate matter purification apparatuses 200 are arranged in a honeycomb pattern, which can meet the needs of purifying large gas flows.

[0165] In one embodiment of the present invention, as shown in Figure 19, this example provides a gas processor 2000, including nineteen gas particulate matter purification apparatuses 200 according to any example or embodiment of Examples 1 to 6. The nineteen gas particulate matter purification apparatuses 200 are arranged in a honeycomb pattern, which can meet the needs of purifying large gas flows.Example 8

[0166] This example provides an indoor gas treatment system. The indoor gas treatment system includes a partition separating indoor from outdoor. The partition is provided with agas flow channel, and the gas particulate matter purification apparatus according to any example or embodiment of Examples 1 to 7 is installed in the gas flow channel. Air from the outdoor enters the indoor through the gas particulate matter purification apparatus in the partition, and air from the indoor enters the outdoor through the gas particulate matter purification apparatus in the partition.

[0167] Specifically, the partition can include walls, glass, and other materials.

[0168] With this design, air from the outdoor can be purified in this way before entering the indoor; in heavily polluted hospitals, air from the indoor can be purified in this way before entering the outdoor.Example 9

[0169] This example provides a vehicle gas treatment system. Thevehicle gas treatment system includes an air conditioning internal circulation conduit and an air conditioning external circulation conduit. The gas particulate matter purification apparatus according to any example or embodiment of Examples 1 to 7 is disposed in the air conditioning internal circulation conduit and / or the air conditioning external circulation conduit.

[0170] This design allows purified air to enter the vehicle.Example 10

[0171] This example provides a mask system. Themask systemincludes a mask, a gas conduit, and a gas particulate matter purification apparatus according to any example or embodiment of Examples 1 to 7. The gas particulate matter purification apparatus is in fluid communication with the mask through the gas conduit. Purified gas treated by the gas particulate matter purification apparatus is delivered to the mouth and nose of a person through the gas apparatus and the mask, or gas exhaled from the mouth and nose of a person first passes through a mask and a gas conduit, then undergoes treatment by a gas particulate matter purification apparatus before being released into the air.

[0172] With this design, outside air can be purified in this way before entering the mouth and nose of the person. For patients with respiratory infectious diseases, their exhaled air can also be purified before entering the air.

[0173] In one embodiment of the present invention, referring to Figures 20 and 21, an open-face mask system 50 for providing purified gas to the mouth and nose is provided. The system includes a gas particulate matter purification apparatus 51 as described in any (example or embodiment)of the aforementioned examples, and an open-face mask 52. The open-face mask 52 is in fluid communication with the gas particulate purification apparatus 51 through a gas conduit 53. Purified gas, treated by the gas particulate matter purification apparatus 51 or the gas treatment system 51, is delivered to the mouth and nose of the person through the gas conduit 53 and the open-face mask 52. The structure of the gas particulate matter purification apparatus may refer to the description above and will not be further described in this example. With this design, clean air, obtained after sterilization and other purification processes by the gas particulate matter purification apparatus, is delivered into the vicinity of the person's mouth and nose, allowing the person to constantly breathe clean air. The open-face mask can quickly take away exhaled air from the mouth and nose, keeping the air in the vicinity of the mouth and nose constantly clean. It is powered by a rechargeable battery or dry cell battery, making it convenient to carry.

[0174] Referring to Figure 20, the open-face mask 52 includes an air outlet structure 521 with an upper opening. The air outlet structure 421 includes a panel disposed outside the breathing port, enclosing the mouth and nose. The height of the panel is adjustable, which can be moved upward or downward. The treated air can enter the air outlet structure 40 from at least one of the following directions: below, to the left, or to the right of the mouth and nose. The air outlet structure 40 has an opening at the top for gas exhaust.

[0175] With this design,since the air outlet structure is open, it ismore comfortable to use than a mask and can replace a mask. Referring to Figure 20, the air outlet structure 521 has at least one of the following features: Feature 1) Referring to Figure 14, the air outlet structure 521 includes an air inlet at its bottom (not shown in figure). A air distribution baffle (not shown in figure) is disposed at the air inlet. Preferably, the air distribution baffle is provided thereon a high density of uniformly distributed small holes; preferably, the air distribution baffle is provided thereon uniformly distributed holes with a diameter of 2 to 4 mm. With this design, the velocity of air entering the mouth and nose is reduced and made uniform, thereby ensuring that the air rises uniformly and smoothly, making the mouth and nose more comfortable during a long-term use of an open-face mask system. Feature 2) Referring to Figure 14, the upper end surface of the air outlet structure 521 is lower than the tip of the nose, and the straight-line distance L5 between the upper end surface of the air outlet structure 521 and the tip of the nose is 2 cm. In other embodiments, the upper end surface of the air outlet structure is disposed above the tip of the nose, preferably 2 cm above the tip of the nose. Feature 3) Referring to Figure 15, the vertical distance between the tip of the nose and the air outlet structure is 0 to 5 cm, that is, the length of L4 in Figure 15 is 0 to 5 cm. In other words, the air outlet structure may or may not be in contact with the tip of the nose.

[0176] Referring to Figure 21, the open-face mask 52 may also include a strap 522 for the wearer to wear the open-face mask 52.Example 11

[0177] This example provides an exhaust gas treatment system. The exhaust gas treatment system includes the gas particulate matter purification apparatus of any example or embodiment of Examples 1 to 7. The exhaust gas includes one of cooking fume, processing equipment exhaust, industrial exhaust, automobile exhaust, and boiler flue gas.Example 12

[0178] This example provides a table. The table includes the gas particulate matter purification apparatus of any example or embodiment of Examples 1 to 7.

[0179] In one embodiment of the present invention, a hole with a diameter of 70 to 500 mm is formed on the office desktop in front of each seat. The gas particulate matter purification apparatus is disposed in the hole. The gas particulate matter purification apparatus generates a continuous supply of clean air, ensuring that the air above the table and around the seat is free of particles, bacteria, and viruses, thereby preventing the inhalation of pathogens and preventing their spread.

[0180] For example, the seats are arranged to match the position of the holes, so that each meeting participant has a gas particulate matter purification apparatus in front of them, and the clean air generated by the gas particulate matter purification apparatus can be continuously supplied to each meeting participant.Example 13

[0181] This example provides a system for producing water from air. The system includes the gas particulate matter purification apparatus of any example or embodiment of Examples 1 to 7, and a water production apparatus. The gas particulate matter purification apparatus is first used to adsorb and remove particulate matter in the air, and then the water production apparatus is used to produce water from the purified air.Test Examples

[0182] Table 1 shows a test of the gas particulate matter purification apparatus provided in Examples 1 and 2. The purification efficiency refers to the removal effect of particles larger than 100 nanometers. As can be seen from Table 1, the purification efficiency can reach 99.99%. Table 1 Test results of gas particulate matter purification apparatus for air particulate matter purificationTest Example 1Test Example 2Test Example 3Test Example 4Test Example 5Test Example 6Test Example 7Test Example 8discharge bundlematerialstainless steel fiber wirestainless steel fiber wirestainless steel fiber wirestainless steel fiber wirestainless steel fiber wirestainless steel fiber wirestainless steel fiber wirestainless steel fiber wirediameter of the fiber wire (µm)1212121212121212number of the fiber wire (10 thousand)0.61.22.44.88.49.614.420.4number of the discharge bundles11111111voltage of the discharge bundle(kV)-3.5-3.5-5.5-12-18-22-22-25adsorption unitinter-electrode spacing (mm)2.33.84.87.39.84.84.87.3flow rate (m / s)11111111L1 (mm)6040456080100120200L3 (mm)30.520.530.54097.5107.5132.5137.5voltage between the adsorption electrode and the discharge electrode (kV)-2.3-3.5-4.8-7.5-9.5-4.8-4.8-7.5the radial cross-sectional adsorption area of the adsorption unit (m 2< )0.0030.0010.0030.0050.030.0360.0550.059purification efficiency99.99%99.99%99.99%99.99%99.99%99.99%99.99%99.99% Example 14

[0183] Some examples of the present invention provide an exhaust gas treatment device for a combustion engine. As shown in Figure 22, the exhaust gas treatment device includes a large particle filter unit 400, a catalytic oxidation unit 500, a diesel particulate filter (DPF) unit 600, and a denitration unit 700, which are sequentially arranged in fluid communication in the gas flow direction. The large particle filter unit 400 utilizes an electric field to adsorb micron-sized or larger particles in the exhaust gas. The exhaust gas after treated by the large particle filter unit 400 flows into the catalytic oxidation unit 500. The catalytic oxidation unit 500 contains a catalyst, catalytically oxidizes one or more of nitrogen monoxide, carbon monoxide, and hydrocarbons, and remove at least a part of one or more of nitrogen monoxide, carbon monoxide, and hydrocarbons from the exhaust gas. The exhaust gas, after catalytically oxidized in the catalytic oxidation unit 500, flows into the DPF unit 600.The DPF unit 600 filters particulate matter from the exhaust gas, and can remove large particles, such as micron-sized or larger particles. The exhaust gas, after large particulate matter filtered in the DPF unit 600, flows into the denitration unit 700 for denitrification treatment. The denitrification treatment can be performed by existing methods using urea or ammonia as a reducing agent.

[0184] The DPF unit 600 in the present invention is a conventional DPF device.

[0185] The catalytic oxidant filled in the catalytic oxidation unit 500 in the present invention may refer to the manganese oxide catalyst disclosed in Chinese Patent CN116809054A.

[0186] The large particle filter unit 400 of the present invention utilizes the metal mesh apparatus provided in the embodiment. The metal mesh apparatus is the gas particulate matter purification apparatus provided in the tenth aspect of the present invention. After a period of use, the first multi-layer metal mesh 421 and / or the second multi-layer metal mesh 431 can be taken out and cleaned for regeneration. The first multi-layer metal mesh 421 and / or the second multi-layer metal mesh 431 after cleaned can be reused to save costs.

[0187] Some examples of the present invention also provide a long-life and low-cost exhaust gas treatment method for a combustion engine. The method includes the following steps: S1: Front large particle filtration S11: The exhaust gas flows into the large particle filter unit 400.The large particle filter unit 400appliesan electric field to or performs physical adsorption) on the exhaust gas entering therein, and the particulate matters are adsorbed on the first multi-layer metal mesh 421 and / or the second multi-layer metal mesh 431, thereby removing micron-sized or larger particles. 70% to 80%of large particles are removed, which mitigates DPF blockage. S12: After the electric field adsorption is performed for a period of time, the first multi-layer metal mesh 421 and / or the second multi-layer metal mesh 431 are taken out and cleaned to achieve regeneration. The first multi-layer metal mesh 421 and / or the second multi-layer metal mesh 431 after cleaned can be reused to save costs. S2: Catalytic Oxidation Treatment

[0188] The exhaust gas after adsorbed by the large particle filter unit 400 enters into the catalytic oxidation unit 500 to be catalytically oxidized to remove at least a part of one or more of nitrogen monoxide, carbon monoxide, and hydrocarbons from the exhaust gas.S3: DPF Treatment

[0189] The exhaust gas after catalytically oxidized enters the DPF unit for particulate matter capture to remove large particles.S4: Denitration Treatment

[0190] The exhaust gas after particulate matter capture enters the denitration unit 700 for denitration treatment using urea or ammonia as a reducing agent.

[0191] In this example, before the exhaust gas enters the DPF unit 600 for particulate matter filtration, it is first treated by the large particle filter unit 400 to remove part of micron-sized and larger particles. With this design, part of micron-sized particles have been adsorbed by the electric field before they are subjected to physical adsorption, so it can not only reduce the resistance and backpressure of the DPF unit, but also extend the lifespan, reduce costs, save fuel, and reduce pollutant emissions. Preferred embodiments of the present invention have been described in detail above. However, it should be understood that, after reading the above teachings, persons skilled in the art may make various modifications and variations to the present invention. Such equivalents are also within the scope of the appended claims of the present application.

Claims

1. A gas particulate matter purification apparatus for adsorbing and removing particulate matter from gas, comprising: a front discharge electrode assembly and an adsorption unit; wherein in a gas flow direction, the front discharge electrode assembly is located in front of the adsorption unit, and there is a distance between the front discharge electrode assembly and the adsorption unit; the front discharge electrode assembly comprises at least one discharge bundle connected to a DC high-voltage power supply; the adsorption unit comprises at least one adsorption electrode and at least one discharge electrode for forming an adsorption electric field; wherein a gas flow channel is formed between the discharge electrode and the adsorption electrode to allow the gas to pass through and undergo the electric field treatment; and a distance between the discharge electrode and the adsorption electrode that are adjacent to each other is same.

2. The gas particulate matter purification apparatus according to claim 1, wherein an end part of the adsorption electrode that is close to the front discharge electrode assembly projects out from an end part of the discharge electrode that is close to the front discharge electrode assembly; or the end part of the adsorption electrode that is close to the front discharge electrode assembly and the end part of the discharge electrode that is close to the front discharge electrode assembly are located in a same plane perpendicular to a direction of gas flow.

3. The gas particulate matter purification apparatus according to claim 1, wherein the discharge electrode comprises a first end of the discharge electrode that is close to the front discharge electrode assembly, the adsorption electrode comprises a first end of the adsorption electrode that is close to the front discharge electrode assembly, and the first end of the adsorption electrode is located in front of the first end of the discharge electrode, wherein a distance between an orthographic projection of the first end of the discharge electrode on the adsorption electrode and the first end of the adsorption electrode is less than or equal to 10 cm; optionally, a distance between an orthographic projection of the first end of the adsorption electrode on the discharge electrode and the first end of the discharge electrode is less than or equal to 3 cm.

4. The gas particulate matter purification apparatus according to claim 1, wherein the gas particulate matter purification apparatus comprises a first power supply and a second power supply, two ends of the first power supply are electrically connected to the discharge bundle and the adsorption electrode respectively, two ends of the second power supply are electrically connected to the discharge electrode and the adsorption electrode respectively, and the adsorption electrode is grounded.

5. The gas particulate matter purification apparatus according to claim 1, wherein the discharge bundle satisfies at least one of the following conditions: (1) the discharge bundle comprises n metal wires and / or conductive non-metallic wires, where n is greater than or equal to 1,000; (2) the discharge bundle comprises a plurality of metal wires and / or conductive non-metallic wires, and a diameter range of the metal wires is from 0.1 to 100 µm, or a diameter range of the conductive non-metallic wires is from 0.1 to 100 µm.

6. The gas particulate matter purification apparatus according to claim 5, wherein the metal wires comprise at least one of stainless steel fiber wires, titanium-chromium-aluminum alloy wires, titanium alloy wires, and nickel alloy wires, or the conductive non-metallic wires are carbon fiber wires.

7. The gas particulate matter purification apparatus according to claim 6, wherein a diameter range of a single fiber of the stainless steel fiber wire is from 5 to 100 µm, or a diameter range of a single fiber of the carbon fiber wire is from 5 to 100 µm.

8. The gas particulate matter purification apparatus according to any one of claims 1 to 7, wherein the front discharge electrode assembly comprises at least one discharge electrode group, and the discharge electrode group comprises a plurality of circumferentially arranged discharge bundles; and when the front discharge electrode assembly comprises a plurality of discharge electrode groups of different radii, the plurality of discharge electrode groups are coaxially arranged.

9. The gas particulate matter purification apparatus according to claim 5, wherein one end of the plurality of the metal wires and / or the conductive non-metallic wires are fixed together to form a fixed end, and the other end is a free end facing the adsorption unit; the front discharge electrode assembly further comprises a support plate, and the fixed end of the discharge bundle is fixed to the support plate.

10. The gas particulate matter purification apparatus according to claim 1, wherein an outermost adsorption electrode in the adsorption unit is an outer adsorption electrode, one end of the outer adsorption electrode extends to form an extension portion, and the front discharge electrode assemblyis disposed within the extension portion; optionally, a vertical distance between the front discharge electrode assembly and the extension portion is 5 to 150 mm; optionally, the vertical distance between the front discharge electrode assembly and the extension portion is 5to 20 mm.

11. The gas particulate matter purification apparatus according to claim 10, wherein an insulating layer is provided on an inner wall of the extension portion, the front discharge electrode assembly is disposed within the insulating layer, and there is a distance between the insulating layer and the front discharge electrode assembly; optionally, a vertical distance between the front discharge electrode assembly and the insulating layer is 5to 150 mm; optionally, the vertical distance between the front discharge electrode assembly and the insulating layer is 5 to20 mm.

12. The gas particulate matter purification apparatus according to claim 1, wherein the adsorption electrode and the discharge electrode are both hollow tubes of different diameters, the discharge electrode and the adsorption electrode are coaxially assembled and staggered in sequence from axis towardperiphery, a uniform distance is maintained between the discharge electrode and the adsorption electrode, and a gas flow channel is formed between the discharge electrode and the adsorption electrode for the gas to pass through for electric field treatment; optionally, the cross-section of the hollow tube is circular or polygonal; optionally, the polygon is hexagonal or rectangular.

13. The gas particulate matter purification apparatus according to claim 12, wherein a hollow tube with the smallest diameter in the adsorption unit is an inner discharge electrode or an inner adsorption electrode, and the gas particulate matter purification apparatus further comprises a power supply disposed within the inner discharge electrode or the inner adsorption electrode.

14. The gas particulate matter purification apparatus according to claim 1, wherein the adsorption electrode and the discharge electrode are both flat plates, the discharge electrodes and the adsorption electrodes are staggered in parallel, a uniform distance is maintained between the discharge electrode and the adsorption electrode, and a gas flow channel is formed between the discharge electrode and the adsorption electrode for the gas to pass through for electric field treatment.

15. The gas particulate matter purification apparatus according to claim 1, wherein the gas particulate matter purification apparatus has at least one of the following features: feature 1: a distance between the discharge electrode and the adsorption electrode is 30 mm or less; optionally, the distance is 10 mm or less; optionally, the distance is 2.5 to 10 mm, or the distance is 3 to 6 mm; feature 2: a voltage between the discharge electrode and the adsorption electrode ranges from -0.5 kV to -12 kV; optionally, the voltage between the discharge electrode and the adsorption electrode ranges from -1kV to -8kV; optionally, the voltage ranges from -1kV to -3kV; optionally, the voltage ranges from -0.5kV to -3kV; feature 3: when a distance between the discharge electrode and the adsorption electrode is 10mm or less, the voltage between the adsorption electrode and the discharge electrode ranges from -0.5 to -12kV; feature 4: a ratio of a discharge area of the front discharge electrode assembly to a radial cross-sectional adsorption area of the adsorption unit is less than 0.9; optionally, the ratio of the discharge area of the front discharge electrode assembly to the radial cross-sectional adsorption area of the adsorption unit is 0.5 to 0.9; feature 5: when a radial cross-sectional adsorption area of the adsorption unit is 0.001m2 to 0.5m2, a voltage of the discharge bundle is -3kV to -60kV; feature 6: a vertical distance L1 from a free end of the discharge bundle to a first end of the adsorption electrode of the adsorption unit and a vertical distance L3 from the discharge bundle to an inner wall of an outermost adsorption electrode are directly proportional: L1 = (0.7-3) × L3; feature 7: a flow velocity of gas passing through the gas particulate matter purification apparatus for electric field treatment ranges from 0.2 m / s to 2.0 m / s; optionally, the flow velocity of gas passing through the gas particulate matter purification apparatus for electric field treatment is 1 m / s; feature 8: a voltage of the discharge bundle ranges from -3 kV to -60 kV. feature 9: a thickness of the discharge electrode and / or the adsorption electrode is 0.01 mm to 5 mm. optionally, the thickness of the discharge electrode and / or the adsorption electrode is 1.0 to 5 mm; or, the thickness is 0.2 to 3 mm. feature 10: a length of the gas flow channel is 50 to 200 mm.

16. The gas particulate matter purification apparatus according to claim 1, wherein the gas particulate matter purification apparatus further comprises a metal mesh apparatus located in front of the front discharge electrode assembly; the metal mesh apparatus comprises a metal mesh front discharge electrode assembly and a first metal mesh adsorption unit;the metal mesh front discharge electrode assembly comprises at least one discharge bundle electrically connected to one electrode of a DC high-voltage power supply, the first metal mesh adsorption unit comprises a stacked multi-layer metal mesh electrically connected to another electrode of the DC high-voltage power supply; in the gas flow direction, the first metal mesh adsorption unit is located in front of the metal mesh front discharge electrode assembly and there is a distance between the first metal mesh adsorption unit and the metal mesh front discharge electrode assembly; or the first metal mesh adsorption unit is located behind the metal mesh front discharge electrode assembly and there is a distance between the first metal mesh adsorption unit and the metal mesh front discharge electrode assembly; and the discharge bundle is disposed on a surface of the metal mesh front discharge electrode assembly facing the first metal mesh adsorption unit, and the discharge bundle of the metal mesh front discharge electrode assembly and the multi-layer metal mesh of the first metal mesh adsorption unit form an electric field.

17. The gas particulate matter purification apparatus according to claim 16, wherein the metal mesh apparatus further comprises a second metal mesh adsorption unit, and the second metal mesh adsorption unit comprises a stacked multi-layer metal mesh; in the gas flow direction, the first metal mesh adsorption unit is disposed on one side of the metal mesh front discharge electrode assembly,the second metal mesh adsorption unit is disposed on the other side of the metal mesh front discharge electrode assembly, andthere is a distance between the second metal mesh adsorption unit and the metal mesh front discharge electrode assembly.

18. The gas particulate matter purification apparatus according to claim 17, wherein the multi-layer metal mesh in the second metal mesh adsorption unit are electrically connected to one electrode of a DC high-voltage power supply.

19. The gas particulate matter purification apparatus according to claim 16, wherein the metal mesh front electrode assembly comprises at least one discharge electrode group, the discharge electrode group comprises a plurality of circumferentially arranged discharge bundles; and when the metal mesh front discharge electrode assembly comprises a plurality of discharge electrode groups of different radii, the discharge electrode groups are coaxially arranged.

20. The gas particulate matter purification apparatus according to claim 1, wherein the discharge electrode and / or the adsorption electrode are made of a metal material or a non-metallic conductive material; and the non-metallic conductive material comprises at least one of graphite, graphene, carbon nanotubes, carbon 60, carbon fiber, conductive carbon black, amorphous carbon, and ion-conductive ceramics, or a synthetic material containing at least one of graphite, graphene, carbon nanotubes, carbon 60, carbon fiber filaments, conductive carbon black, amorphous carbon, and ion-conductive ceramics; orthe metal material comprises stainless steel.

21. The gas particulate matter purification apparatus according to claim 1, wherein the gas particulate matter purification apparatus further comprises a gas distribution unit, and the gas passes through the gas distribution unit, the front discharge electrode assembly, and the adsorption unit in sequence in the gas flow direction.

22. An indoor gas treatment system, comprising: a partition separating indoor from outdoor, wherein the partition is provided with a gas flow channel, and the gas particulate purification apparatus according to any one of claims 1 to 21 is installed within the gas flow channel; and air from the outdoor enters the indoor through the gas particulate matter purification apparatus in the partition, or air from the indoor enters the outdoor through the gas particulate matter purification apparatus in the partition.

23. A vehicle gas treatment system, comprising: an air conditioning internal circulation conduit and an air conditioning external circulation conduit, wherein the air conditioning internal circulation conduit and / or the air conditioning external circulation conduit are provided with the gas particulate matter purification apparatus according to any one of claims 1 to 21.

24. A mask system, comprising: a mask, a gas conduit, and the gas particulate matter purification apparatus according to any one of claims 1 to 21, wherein the gas particulate matter purification apparatus is in fluid communication with the mask through the gas conduit; and purified gas treated by the gas particulate matter purification apparatus is delivered to the mouth and nose of a person through the gas apparatus and the mask, or gas exhaled from the mouth and nose of a person first passes through a mask and a gas conduit, then undergoes treatment by a gas particulate matter purification apparatus before being released into the air.

25. An exhaust gas treatment system comprising the gas particulate matter purification apparatus according to any one of claims 1 to 21, wherein the exhaust gas comprises one of cooking fume, processing equipment exhaust, industrial exhaust, automobile exhaust, and boiler flue gas.

26. A table comprising the gas particulate matter purification apparatus according to any one of claims 1 to 21.

27. A system for producing water from air, comprising: the gas particulate matter purification apparatus according to any one of claims 1 to 21 and a water production apparatus, wherein the gas particulate matter purification apparatus is first used to adsorb and remove particulate matter in the air, and then the water production device is used to produce water from the purified air.

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