CN113457397B - Industrial waste gas treatment system based on low-temperature plasma purification - Google Patents
Industrial waste gas treatment system based on low-temperature plasma purification Download PDFInfo
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- CN113457397B CN113457397B CN202110837971.1A CN202110837971A CN113457397B CN 113457397 B CN113457397 B CN 113457397B CN 202110837971 A CN202110837971 A CN 202110837971A CN 113457397 B CN113457397 B CN 113457397B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0035—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by wetting, e.g. using surfaces covered with oil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
- B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/30—Controlling by gas-analysis apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
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Abstract
The invention relates to an industrial waste gas treatment system based on low-temperature plasma purification, which is provided with at least two air inlet pipelines, wherein a low-temperature plasma purification assembly and a control assembly are arranged in a cavity at the junction of the air inlet pipelines; an air quality sensor, a fan assembly and a flow equalizing buffer layer are sequentially arranged between each air inlet of the air inlet pipeline and the low-temperature plasma purification assembly; the air quality sensor is used for detecting a real-time air pollution index at an air inlet, the control assembly calibrates the air inlet with the real-time air pollution index being greater than or equal to a first threshold value as a target inlet, and the air inlet with the real-time air pollution index being smaller than the first threshold value as a normal outlet; meanwhile, the control assembly adjusts the fan assembly at the target inlet into an air inlet state and adjusts the fan assembly at the normal outlet into an air supply state; pollutants distributed in regional scattered points are efficiently processed, and meanwhile, the false recognition probability of the system is reduced; the generation of secondary pollutants is reduced to the maximum extent, the pole plate has high strength, and the pole plate is not easy to deform after being cleaned for multiple times.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to an industrial waste gas treatment system based on low-temperature plasma purification.
Background
Dielectric barrier discharge is a discharge method, which is a method of generating a low temperature plasma at a high pressure between two electrodes. Dielectric barrier discharge has multiple features such as corona discharge, high pressure for uniform discharge and large space for glow discharge. These discharges are very short in duration, consisting of many microdischarges, randomly distributed in time and space. Electrons of the medium obtain required energy in an electromagnetic field, prevent discharge, collide with pollutants, excite self energy to be converted into internal energy or kinetic energy, excited molecules form active groups under the action of ionization, and water and oxygen are added to generate new active groups such as ecological hydrogen and the like, so that a series of chemical reactions are initiated. Plasma is a special form of matter, which is one of the forms of matter that exists, as in conventional solid, liquid and gas states, but this state is unstable and occurs only when an applied electric field is sufficient to break down the gas, which is broken down into a mixture of electrons, ions, atoms and radicals that are mutually doped. Although the high energy of the electrons rapidly increases the temperature of the electrons, the temperature of the heavy particles is not high and the whole is still in a low temperature state, and thus the plasma is also called low temperature plasma. However, the application of the low-temperature plasma purification technology mostly exists in the hanging type fixed-point air conditioning technology, so that the initial airflow is disordered, uniform purification cannot be achieved in a multi-speed environment, and meanwhile, after air is fed, pollutants are subjected to point decomposition sterilization through dielectric barrier discharge, and then fresh air is released into the air; meanwhile, the existing discharge reactor is in a straight design, the humidity is accumulated in long-term operation, condensed water appears on the positive and negative plate levels, so that the quality and the purification effect of equipment are influenced, the condensed water always rotates at the lower edge of the plate level, local deformation appears after long-term repeated cleaning, the durability is lower and lower, and therefore a uniform purification pipeline circulation system which is better in design and aims at scattered point type distributed pollution sources is needed, the air inlet speed can be standardized, and the structural design of the plate level can be optimized; the existing design has a problem that the air purification system of the multi-inlet pipeline cannot be circulated well, and often purified fresh air can be discharged only through a fixed outlet, for example, gas in a seriously polluted area is adsorbed and purified and then discharged back to the area, so that the pollution concentration in the area is reduced instantaneously, the judgment of a sensor is influenced, and the problem of pollutants still exists; the misjudgment of the circulating system is caused, so that the air purification efficiency of each point position needs to be balanced through pipeline type air circulation, and the misjudgment is reduced.
Disclosure of Invention
In order to solve the existing problems, the invention provides a multi-stage purification system with a plurality of pipeline inlets and embedded in the pipelines, an air exhaust fan and an air inlet buffer layer are adopted to uniformly intake air speed, so that smooth operation is ensured, more preferably, a multi-stage discharge plate stage bat is adopted, and a wave-shaped structure is adopted on the design of a positive plate stage and a negative plate stage, so that condensed water is deformed after single-point corrosion.
In order to achieve the above object, the present invention provides an industrial waste gas treatment system based on low temperature plasma purification, comprising:
the device is provided with at least two air inlet pipelines which are communicated with each other, and a low-temperature plasma purification assembly and a control assembly are arranged in a cavity at the intersection of the air inlet pipelines;
an air quality sensor, a fan assembly and a flow equalizing buffer layer are sequentially arranged between each air inlet of the air inlet pipeline and the low-temperature plasma purification assembly;
the air quality sensor is used for detecting a real-time air pollution index at an air inlet, the control component calibrates the air inlet of which the real-time air pollution index is greater than or equal to a first threshold value as a target inlet, and the air inlet of which the real-time air pollution index is less than the first threshold value as a normal outlet; meanwhile, the control assembly adjusts the fan assembly at the target inlet into an air inlet state and adjusts the fan assembly at the normal outlet into an air supply state;
when a plurality of target inlets exist and normal outlets do not exist, the control assembly sequences the real-time air pollution indexes of the target inlets, the air inlet with the minimum real-time air pollution index is used as an emergency outlet, and the control assembly adjusts the fan assembly of the emergency outlet to be in an air supply state.
Preferably, the flow equalizing buffer layer sequentially comprises dust collecting cotton and a pre-filtering net, and the dust collecting cotton is filled in the cavity of the air inlet pipeline and is arranged at intervals with the pre-filtering net.
Preferably, the air inlet pipeline is provided with a turnover cover opening corresponding to the dust collecting cotton.
Preferably, the end of the pre-filtering net far away from the dust collecting cotton is also connected with a water moistening film.
Preferably, the low-temperature plasma purification assembly comprises discharge units corresponding to the number of the gas inlet pipelines; the discharge unit is arranged at one end, close to the intersection of the air inlet pipeline, the discharge unit is electrically connected with the control assembly, and the control assembly controls the discharge unit at the target inlet to perform discharge purification.
Preferably, the discharge unit includes an electric field cathode pin disposed at an end of the air inlet duct close to the ground, and an electric field anode plate disposed at an end far from the ground.
Preferably, the device comprises serial cathode needles arranged in an array; one end of the electric field anode plate close to the electric field cathode pin is a wave-shaped surface.
Preferably, the discharge unit is integrated in the plug, and the air inlet duct is provided with an opening adapted to the plug to form a drawer structure.
Preferably, the discharge distance between the cathode needle of the electric field and the anode plate of the electric field is 20mm.
Preferably, the control assembly further comprises a power protection unit.
The beneficial effects of the invention are: the invention provides an industrial waste gas treatment system based on low-temperature plasma purification, which is provided with at least two air inlet pipelines, wherein the air inlet pipelines are mutually communicated, and a low-temperature plasma purification assembly and a control assembly are arranged in a cavity at the junction of the air inlet pipelines; an air quality sensor, a fan assembly and a flow equalizing buffer layer are sequentially arranged between each air inlet of the air inlet pipeline and the low-temperature plasma purification assembly; the air quality sensor is used for detecting a real-time air pollution index at an air inlet, the control assembly calibrates the air inlet with the real-time air pollution index being greater than or equal to a first threshold value as a target inlet, and the air inlet with the real-time air pollution index being smaller than the first threshold value as a normal outlet; meanwhile, the control assembly adjusts the fan assembly at the target inlet into an air inlet state and adjusts the fan assembly at the normal outlet into an air supply state; when a plurality of target inlets exist and normal outlets do not exist, the control assembly sequences the real-time air pollution indexes of the target inlets, the air inlet with the minimum real-time air pollution index is taken as an emergency outlet, and the control assembly adjusts a fan assembly of the emergency outlet to be in an air supply state; pollutants distributed in regional scattered points are efficiently processed, and meanwhile, the false recognition probability of the system is reduced; and the generation of secondary pollutants is reduced to the greatest extent, the pole plate has high strength, is not easy to deform after being cleaned for many times, and has strong durability.
Drawings
FIG. 1 is a schematic view of the construction of the present invention;
FIG. 2 is a schematic view of the system air flow architecture of the present invention.
The main element symbols are as follows:
1. an air intake duct; 11. an air sensor; 12. a target inlet; 13. a normal outlet;
2. a fan assembly;
3. a current-sharing buffer layer; 31. collecting dust cotton; 32. pre-filtering the net; 33. moistening the membrane with water;
4. a low temperature plasma purification component; 41. a discharge unit; 411. an electric field cathode needle; 412. an electric field anode plate;
5. and a control component.
Detailed Description
In order to more clearly describe the present invention, the present invention will be further described with reference to the accompanying drawings.
In the following description, details of general examples are given to provide a more thorough understanding of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. It should be understood that the specific embodiments are illustrative of the invention and are not to be construed as limiting the invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
In the prior art, the low-temperature plasma purifier can effectively remove main pollutants such as Volatile Organic Compounds (VOC), inorganic matters, hydrogen sulfide, ammonia gas, mercaptan, oil fume volatilization malodors and the like, and various industrial malodors, can remove the long-term diffused and accumulated malodors and peculiar smells within 24 hours, has the capability of powerfully killing various microorganisms such as bacteria, viruses and the like in the air, and has obvious mildew-proof effect; the system adopting low-temperature plasma purification is usually aimed at local areas and is in actual production and life; the pollutant generating places are distributed in different areas, and distributed in a scattered point emission type, although the key areas can be marked in a concentrated mode, the single-point purification in the prior art is far from achieving the effect; the prerequisite of single-point purification is that the pollutant concentration in the area exceeds a threshold value, then purification is carried out and purified air is discharged, but the purification and absorption can reduce the instantaneous concentration in the area, so that the purifier judges that the purification is complete, obviously, misjudgment can be generated, and after a period of time, the purifier repeatedly identifies the standard exceeding and then starts; but the user in the environment has inhaled the contaminants. Therefore, a system which can purify a multipoint region and can not generate misjudgment after air circulation is needed; on the basis, the power of the conventional low-temperature plasma purifier is very low, direct transplantation superposition cannot be performed on the scene of the invention, the efficient treatment of the closed environment of the pipeline needs to be realized, the air inlet speed and direction are controlled, and the low-temperature plasma purifier is not easy to corrode and attach pollutants after being used for a long time. Therefore, a system to solve the above problems was developed, as follows.
The present invention provides a system for treating industrial waste gas based on low temperature plasma purification, please refer to fig. 1-2; the method comprises the following steps:
the device is provided with at least two air inlet pipelines 1 which are communicated with each other, and a low-temperature plasma purification component 4 and a control component are arranged in a cavity at the intersection of the air inlet pipelines;
an air quality sensor 11, a fan assembly 2 and a flow equalizing buffer layer 3 are sequentially arranged between each air inlet of the air inlet pipeline and the low-temperature plasma purification assembly;
the air quality sensor is used for detecting a real-time air pollution index at an air inlet, the control component calibrates the air inlet of which the real-time air pollution index is greater than or equal to a first threshold value as a target inlet 12, and the air inlet of which the real-time air pollution index is less than the first threshold value as a normal outlet 13; meanwhile, the control assembly adjusts the fan assembly at the target inlet into an air inlet state and adjusts the fan assembly at the normal outlet into an air supply state;
when a plurality of target inlets exist and normal outlets do not exist, the control assembly sequences the real-time air pollution indexes of the target inlets, the air inlet with the minimum real-time air pollution index is used as an emergency outlet, and the control assembly adjusts the fan assembly of the emergency outlet to be in an air supply state. The single pipeline is provided with two openings, only one opening is formed after the multiple pipelines are mutually communicated, so that the effect of inputting polluted gas in a single point can be achieved only by matching the pipelines, the purified air is discharged from other areas, air circulation under multiple inlets is provided for better control in the period, the situation that when the pollution of multiple target inlets exceeds the standard at the same time is ensured, the air is discharged from the remaining normal outlets, the air at the target inlets can be ensured to be stably purified all the time, the false phenomenon that the instantaneous pollution index of the air after mixed purification is reduced can not be caused, the normal outlets are the areas which reach the standard due to the fact that the air is discharged from the normal outlets, the air can be slowly expanded to all the areas by the gas exchange of the air when the purified air is discharged from the normal outlets, and therefore the purification effect of all the points with the pollution index exceeding the standard is ensured to be really achieved. Wherein, the air input and output are realized by the positive and negative rotation of the fan component; and under the extreme condition that only a target inlet exists, in order to ensure that an outlet for fresh air circulation exists, the air is directly discharged with the lowest exponential arrangement, and the air is purified from the dilution angle.
In this embodiment, the flow equalizing buffer layer 3 sequentially comprises dust collecting cotton 31 and a pre-filtering net 32, and the dust collecting cotton is filled in the cavity of the air inlet pipeline and is arranged at an interval with the pre-filtering net.
In the embodiment, a flip opening is arranged at the position of the air inlet pipeline corresponding to the dust collecting cotton. The drawer type design is formed, and the maintenance and the cleaning at the later stage are convenient.
Preferably, the end of the pre-filtering net far away from the dust collecting cotton is also connected with a water moistening film 33. Air with a large pollution index is firstly sucked into a pipeline by a fan assembly, firstly is blocked by dust and sundries, firstly is purified, then the filtered air is sent into a low-temperature plasma purification assembly, and airflow is broken through and activated; destroying the existing aerosol, and denaturalizing and inactivating pathogenic bacteria and viruses under the combined action of irradiation, free radicals and superoxide ions; filtering the water-wet film in a pipeline at a normal outlet, and further digesting ozone and free radicals carried in the air; then discharged into the air; the purified air is ensured not to have secondary pollution.
In the present embodiment, the low temperature plasma purification assembly 4 includes discharge cells 41 corresponding to the number of intake ducts; the discharge unit is arranged at one end, close to the intersection of the air inlet pipeline, the discharge unit is electrically connected with the control assembly, and the control assembly controls the discharge unit at the target inlet to perform discharge purification. Because under the condition that has many root canals to meet, the chamber of junction can't handle the sight of a plurality of imports simultaneous workings, consequently every admission line is close to the tip of junction and individually sets up a discharge unit, and only the discharge unit of target import can carry out purification work, consequently can reach the multiend simultaneous workings, guarantees to purify efficiency.
As a preferable scheme, the discharge unit includes field cathode pins 411 disposed at an end of the air intake duct near the ground, and field anode plates 412 disposed at an end far from the ground. The serial cathode pins are arranged in an array; one end of the electric field anode plate close to the electric field cathode pin is a wave-shaped surface. Many discharge points are arranged, the electric field intensity energy is large, the discharge points are distributed uniformly, and the like. All 3-4 parts of electric fields of the whole machine are in series multi-stage purification design, 9-12 discharge cathode teeth (cathode needles) are equivalent to 9-stage purification, so that the purification rate can reach 96 percent, and particulate matters and oil smoke with various particle sizes can be easily collected. The emission standard concentration is less than 1 mg per cubic meter, and the emission can reach the standard in 3-4 months; the wave-shaped structure has large pole plate strength, is not easy to deform after a plurality of cleaning processes, and has extremely strong durability. The discharge distance between the cathode needle and the anode plate of the electric field is 20mm, and the ultra-large gap ensures an ultra-long cleaning period; and for the flat plate type structure, the wavy structure surface can not generate single-point condensed water adhesion corrosion after long-term work, but water drops can be converged on the wavy wave crest along with the action of gravity due to uneven surface, and finally the water drops are dried or low and cannot be attached and adsorbed due to the action of tension. The whole machine oil smoke is designed to be 4.5 meters per second through the wind speed, and the reverse corona design is applied to the tail end electric field, so that volatile molecules in the oil smoke are fully cracked, and the smell removal effect is excellent. The high-potential discharge plate is used for generating low-temperature plasma to change the organic volatile molecular structure of the oil smoke, molecules are broken into molecular bonds under the action of a high-frequency electric field and are oxidized by the low-point polar plate hydroxyl to synthesize water and carbon dioxide, peculiar smell molecular chains are effectively destroyed, peculiar smell is removed, and non-methane total hydrocarbon emission is reduced. No use of active carbon, no secondary pollution, easy maintenance and long service life.
In this embodiment, the discharge unit is integrated on the plug, and the air inlet duct is provided with an opening adapted to the plug to form a drawer structure.
In this embodiment, the control assembly further includes a power protection unit. A high-power supply is used, so that sufficient current is provided for a multi-point discharge electric field; the large current and the low voltage are also important reasons for the overlong cleaning period. The power supply DSP has the functions of rapid ignition and voltage reduction and power-off protection, and is safe and free of hidden danger.
The invention has the technical effects that:
1. the module type structure is more convenient to disassemble, assemble and clean;
2. drawer type: the electric field at the plasma is designed in a drawer mode, so that the maintenance and the cleaning are convenient; the stainless steel plate machine body ensures the performance to be durable; low noise: the noise generated by the oil fume purifier during operation can be ignored; a current equalizing section: the oil fume is introduced through the air inlet and is evenly distributed to the pretreatment section and the electric field section in the flow equalizing section, so that the oil fume flow is ensured to be stable, and the oil fume is thoroughly treated by equipment;
3. pollutants distributed in regional scattered points are efficiently processed, and meanwhile, the false recognition probability of the system is reduced; and the generation of secondary pollutants is reduced to the greatest extent, the pole plate has high strength, is not easy to deform after being cleaned for multiple times, and has high durability.
The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be considered by those skilled in the art are intended to fall within the scope of the present invention.
Claims (10)
1. An industrial waste gas treatment system based on low temperature plasma purification, comprising:
the device is provided with at least two air inlet pipelines which are communicated with each other, and a low-temperature plasma purification assembly and a control assembly are arranged in a cavity at the junction of the air inlet pipelines;
an air quality sensor, a fan assembly and a flow equalizing buffer layer are sequentially arranged between each air inlet of the air inlet pipeline and the low-temperature plasma purification assembly;
the air quality sensor is used for detecting a real-time air pollution index at an air inlet, the control assembly calibrates the air inlet with the real-time air pollution index being greater than or equal to a first threshold value as a target inlet, and the air inlet with the real-time air pollution index being smaller than the first threshold value as a normal outlet; meanwhile, the control assembly adjusts the fan assembly at the target inlet into an air inlet state and adjusts the fan assembly at the normal outlet into an air supply state;
when a plurality of target inlets exist and a normal outlet does not exist, the control assembly sequences the real-time air pollution indexes of the target inlets, the air inlet with the minimum real-time air pollution index is used as an emergency outlet, and the control assembly adjusts the fan assembly of the emergency outlet to be in an air supply state.
2. The industrial waste gas treatment system based on low-temperature plasma purification according to claim 1, wherein the flow equalizing buffer layer sequentially comprises dust-collecting cotton and a pre-filtering screen, and the dust-collecting cotton is filled in the cavity of the air inlet pipeline and is arranged at an interval with the pre-filtering screen.
3. The industrial waste gas treatment system based on low-temperature plasma purification according to claim 2, wherein a flip opening is arranged at a position of the air inlet pipeline corresponding to the dust collecting cotton.
4. The industrial waste gas treatment system based on low-temperature plasma purification according to claim 2, wherein a water-wet film is further connected to one end of the pre-filter screen, which is far away from the dust-collecting cotton.
5. The industrial waste gas treatment system based on low-temperature plasma purification according to claim 1, wherein the low-temperature plasma purification assembly comprises discharge units corresponding to the number of the gas inlet pipes; the discharge unit is arranged at one end, close to the intersection of the air inlet pipeline, the discharge unit is electrically connected with the control assembly, and the control assembly controls the discharge unit at the target inlet to perform discharge purification.
6. The industrial exhaust gas treatment system according to claim 5, wherein the discharge unit includes an E-field cathode pin and an E-field anode plate, wherein the E-field cathode pin is disposed at an end of the inlet duct near the ground, and the E-field anode plate is disposed at an end of the inlet duct far from the ground.
7. The industrial waste gas treatment system based on low-temperature plasma purification according to claim 6, comprising serial cathode needles arranged in an array; one end of the electric field anode plate close to the electric field cathode pin is a wave-shaped surface.
8. The industrial waste gas treatment system based on low-temperature plasma purification according to claim 6, wherein the discharge unit is integrated on a plug connector, and the air inlet pipe is provided with an opening adapted to the plug connector to form a drawer type structure.
9. The industrial waste gas treatment system based on low-temperature plasma purification according to claim 6, wherein the discharge distance between the cathode needle of the electric field and the anode plate of the electric field is 20mm.
10. The industrial waste gas treatment system based on low temperature plasma purification according to claim 6, wherein the maximum wind speed of the fan assembly is 4.5m/s.
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