CN113996440B - Purifier based on plasma and electrostatic precipitator coprocessing VOCs waste gas - Google Patents
Purifier based on plasma and electrostatic precipitator coprocessing VOCs waste gas Download PDFInfo
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- CN113996440B CN113996440B CN202111053774.7A CN202111053774A CN113996440B CN 113996440 B CN113996440 B CN 113996440B CN 202111053774 A CN202111053774 A CN 202111053774A CN 113996440 B CN113996440 B CN 113996440B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
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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
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/346—Controlling the process
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/45—Collecting-electrodes
- B03C3/47—Collecting-electrodes flat, e.g. plates, discs, gratings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a purification device for cooperatively treating VOCs waste gas based on plasma and electrostatic dust removal, which comprises: the air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with an accommodating space, a plurality of uniformly distributed air inlets are formed in two sides of the shell, an air outlet is formed in the rear side of the shell, and the fan is detachably arranged on the air outlet; the first plasma component comprises two first fixing plates which are arranged at intervals, and a plurality of first filiform high-voltage electrodes and first plate electrodes which are uniformly distributed are respectively fixedly arranged on opposite sides of the two first fixing plates and are used for sterilizing VOCs waste gas; the second plasma component comprises two second fixing plates which are arranged at intervals, and a plurality of second wire electrodes and second plate electrodes which are uniformly distributed are fixedly arranged on opposite sides of the two second fixing plates respectively and are used for degrading the VOCs waste gas; and the electrostatic dust removal assembly is used for removing dust from the VOCs waste gas. The invention can realize the integrated comprehensive purification treatment of pathogenic microorganisms, VOCs and suspended particles in the VOCs waste gas, and has no secondary pollution problem.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a purification device for cooperatively treating VOCs waste gas based on plasma and electrostatic dust removal.
Background
VOCs often have peculiar smell and stink, cause dizziness, sore throat and respiratory inflammation, influence the digestive system of people, and cause symptoms such as nausea and inappetence; in addition, many VOCs also have carcinogenic, teratogenic and mutagenic effects, and research shows that VOCs have embryotoxicity, the teratogenicity rate of a newborn exposed to VOCs in pregnancy is 8-13 times that of a normal newborn, and the fetal abortion rate is 25% higher than that of an untouched pregnant woman.
Some of the existing waste gas treatment methods are only suitable for treating gas components in waste gas, and some of the existing waste gas treatment methods are only suitable for collecting particles or liquid drops, and have the outstanding problems of high operation and maintenance cost, serious secondary pollution, narrow application range and the like, the treatment efficiency is generally low, and byproducts with stronger toxicity and higher concentration, such as dioxin and the like, can be generated.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides the purification device for cooperatively treating the VOCs waste gas based on the plasma and the electrostatic dust removal, so that the integrated comprehensive purification treatment of the VOCs, pathogenic microorganisms and suspended particles in air pollution can be realized, and the problem of secondary pollution is avoided.
The invention provides a purification device for cooperatively treating VOCs waste gas based on plasma and electrostatic dust removal, which comprises:
the air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with an accommodating space, a plurality of uniformly distributed air inlets are formed in two sides of the shell, an air outlet is formed in the rear side of the shell, and the fan is detachably arranged on the air outlet;
the first plasma component comprises two first fixing plates which are arranged at intervals, and a plurality of first wire electrodes and first plate electrodes which are uniformly distributed are respectively fixedly arranged on opposite sides of the two first fixing plates and are used for sterilizing VOCs waste gas;
the second plasma component comprises two second fixing plates which are arranged at intervals, and a plurality of second wire electrodes and second plate electrodes which are uniformly distributed are respectively fixedly arranged on opposite sides of the two second fixing plates and are used for degrading the sterilized VOCs waste gas;
the electrostatic dust removal assembly comprises a plurality of ground electrode plates and high-voltage electrodes which are arranged in a staggered mode and is used for removing dust from the sterilized and degraded VOCs waste gas;
VOCs waste gas enters through the air inlet, is sequentially treated by the first plasma component, the second plasma component and the electrostatic dust removal component and then is discharged from the air outlet under the action of the fan, and residual space charges in working medium gas after the first plasma component discharges contribute to dispersion discharge of the second plasma component, so that the VOCs waste gas is degraded.
Preferably, blocking mediums are arranged in the middle of the two first fixing plates and the middle of the two second fixing plates, so that inter-electrode discharge breakdown is prevented.
Preferably, the barrier medium is an alumina ceramic barrier medium.
Preferably, the first plasma assembly and the second plasma assembly are applied at a voltage of 6-8kV and a frequency of 20kHz.
Preferably, the distance between each ground electrode plate and the adjacent high voltage electrode is the same.
Preferably, the number of the ground electrode plate and the high voltage electrode is 10-20, and the distance between the ground electrode plate and the adjacent high voltage electrode is 10-20mm.
Preferably, the lower end of the electrostatic dust collection assembly is also provided with a collection box for collecting dust.
Preferably, a first plasma assembly and a second plasma assembly are arranged on two sides of the electrostatic dust collection assembly.
Preferably, the discharge areas of the first plasma assembly and the second plasma assembly are respectively provided with a photoelectric sensor and an ultrasonic sensor, and the ultrasonic sensors and the photoelectric sensors are fixedly connected with the inner wall of the shell.
Preferably, the plasma processing device further comprises a control panel, an input end of the control panel is electrically connected with output ends of the ultrasonic sensor and the photoelectric sensor, and the control panel is bidirectionally connected with power supplies of the first plasma assembly and the second plasma assembly and used for controlling output voltage of the power supplies.
The working principle is as follows:
the plasma component generates low-temperature plasma by utilizing discharge, wherein the low-temperature plasma is rich in high-activity particles such as O, N, OH free radicals and the like, charged particles such as electrons, positive ions and negative ions, an electric field effect, ultraviolet irradiation and the like, the particles have high chemical activity and show strong oxidizing property, and generally, active species and high-energy electrons can be inactivated by destroying virus microbial cells and structures, and macromolecule chemical bonds are broken to degrade the virus microbial cells into micromolecules, so that a plurality of physicochemical processes which originally need to occur under the high-temperature condition can be realized at room temperature.
According to the device, a three-stage treatment mode is adopted, VOCs waste gas is firstly subjected to sterilization of the first plasma component, degradation of the second plasma component and dust removal of the electrostatic dust removal component, and the mutual synergistic effect remarkably improves the treatment efficiency of VOCs;
the ultrasonic sensor and the photoelectric sensor can detect the ionization environment of the first plasma component and the ionization environment of the second plasma component, and adjust the power supply voltage supplied by the first plasma component and the second plasma component according to the feedback information of the first plasma component and the second plasma component, so that the optimal treatment condition of the VOCs waste gas is guaranteed.
The beneficial technical effects are as follows:
the purification device realizes integrated comprehensive purification treatment of VOCs, pathogenic microorganisms and suspended particles in air pollution through the synergistic effect of the plasma component and the electrostatic dust removal component, and has no secondary pollution problem; the purification device of the application can treat 50m per hour 3 The purification efficiency of the waste gas is high; the pure electric purification method is adopted, no material consumption is caused, the electric energy consumption is low, the start-stop response is fast, and the energy conservation and the environmental protection are realized.
Drawings
FIG. 1 is a top sectional view of a purification device for treating VOCs waste gas based on the synergy of plasma and electrostatic dust removal;
FIG. 2 is a front sectional view of the purification device for treating VOCs waste gas based on the synergy of plasma and electrostatic dust removal;
FIG. 3 is a schematic diagram of the working principle of the purification device for the synergistic treatment of VOCs waste gas based on plasma and electrostatic dust removal according to the present invention;
FIG. 4 is a schematic structural diagram of an electrostatic precipitation assembly of the purification apparatus for treating VOCs waste gas based on the cooperation of plasma and electrostatic precipitation according to the present invention;
fig. 5 is a schematic diagram of module connection according to the present invention.
In the figure: the device comprises a shell 1, a fan 2, an air inlet 3, a first plasma component 4, a second plasma component 5, an electrostatic dust collection component 6, a first wire electrode 7, a first fixing plate 8, a first plate electrode 9, a ground electrode plate 10, a high-voltage electrode 11, a second fixing plate 12, a second wire electrode 13, a second plate electrode 14, a photoelectric sensor 15, an ultrasonic sensor 16, a control panel 17 and a power supply 18.
Detailed Description
Referring to fig. 1-5, the invention provides a purification device for treating VOCs waste gas based on the cooperation of plasma and electrostatic dust removal, comprising:
the air conditioner comprises a shell 1, a fan and a fan, wherein the shell 1 is provided with an accommodating space, a plurality of air inlets 3 which are uniformly distributed are formed in two sides of the shell 1, an air outlet is formed in the rear side of the shell 1, and the air outlet is detachably provided with the fan 2;
the first plasma component 4 comprises two first fixing plates 8 which are arranged at intervals, and a plurality of first wire electrodes 7 and first plate electrodes 9 which are uniformly distributed are respectively fixedly arranged on opposite sides of the two first fixing plates 8 and are used for sterilizing VOCs waste gas;
the second plasma component 5 comprises two second fixing plates 12 which are arranged at intervals, and a plurality of second wire electrodes 13 and second plate electrodes 14 which are uniformly distributed are respectively fixedly arranged on opposite sides of the two second fixing plates 12 and are used for degrading VOCs waste gas;
the electrostatic dust removal assembly 6 comprises a plurality of ground electrode plates 10 and high-voltage electrodes 11 which are arranged in a staggered mode and is used for removing dust from VOCs waste gas;
when the device is used, VOCs waste gas enters through the air inlet and then is sequentially treated by the first plasma component, the second plasma component and the electrostatic dust removal component and then is discharged from the air outlet under the action of the fan, and residual space charges in working medium gas after the first plasma component discharges contribute to dispersion discharge of the second plasma component, so that the degradation of the VOCs waste gas is realized.
In addition, blocking media are arranged in the middle of the first fixing plate and the middle of the two second fixing plates. Wherein the barrier medium is preferably an alumina ceramic barrier medium.
The applied voltage of the first plasma component and the second plasma component is 6-8kV, preferably 6kV, the frequency is 20kHz, the power of each module is about 20W, and the plasmas formed by the first plasma component and the second plasma component are rich in a large amount of O and N active particles, high-energy electrons, ultraviolet rays and the like, and are inactivated by destroying cell and virus structures.
For the electrostatic dust removal assembly, the electrostatic dust removal unit comprises three parts, namely an adjustable direct-current low-voltage power supply, a high-voltage direct-current power supply and a plate-plate reactor, wherein the plate-plate reactor consists of 10-20 ground electrode plates and 15 high-voltage electrodes, the distance between each ground electrode plate and the adjacent high-voltage electrode is the same, the two electrodes positioned on the outermost side are the ground electrode plates, and the distance between each ground electrode plate and the adjacent high-voltage electrode is 10-20mm, preferably 15mm; when the voltage is in the range of 10-40kV, the electric field intensity between the flat plate electrodes is E = U/d = (10-40) 15kV/1.5cm = (6.66-26.66) kV/cm, each dust particle is approximately considered to have 1000 charges, and the electric field force applied to the dust particles is F = E = (6.66-26.66) kV/cm = (1000.6 x 10) = (1000 x 1.6 x 10) = (10) -19 C＝1.07-4.27*10 -10 N, under the drive of the electric field force, the charged dust particles move to the polar plate, and the purpose of collection is achieved.
The lower end of the electrostatic dust collection component is also provided with a collection box for collecting dust, and when the dust is collected sufficiently, the dust falls into the collection box due to gravity or is removed by knocking.
In order to further improve the processing capacity of the purification device, a first plasma assembly and a second plasma assembly are arranged on two sides of the electrostatic dust collection assembly.
In order to further improve the treatment effect of the device, the discharge regions of the first plasma component and the second plasma component are respectively provided with a photoelectric sensor 15 and an ultrasonic sensor 16, and the ultrasonic sensor 16 and the photoelectric sensor 15 are both fixedly connected with the inner wall of the shell 1; the plasma processing device further comprises a control panel 17, wherein the input end of the control panel 17 is electrically connected with the output ends of the ultrasonic sensor 16 and the photoelectric sensor 15, and the control panel 17 is bidirectionally connected with the power supply 18 of the first plasma assembly and the second plasma assembly and used for controlling the output voltage of the power supply. The photoelectric sensor and the ultrasonic sensor are used for receiving the photoacoustic information and the vibration information of the discharge areas of the first plasma component and the second plasma component, feeding back the photoacoustic information and the vibration information to the control panel, and controlling the output voltage of the power supply through the control panel to ensure the optimal treatment condition of the VOCs waste gas.
The purification device realizes integrated comprehensive purification treatment of VOCs, pathogenic microorganisms and suspended particles in air pollution through the synergistic effect of the plasma component and the electrostatic dust removal component, and has no secondary pollution problem; the purification device of the application can treat 50m per hour 3 The purification efficiency of the waste gas is high; the application adopts a pure electric purification method, no material consumption, low electric energy consumption, quick response of start and stop, energy conservation and environmental protection.
To this device, concentrate the enterprise that discharges VOCs to petrochemical industry, metallurgy, chemical fertilizer, monosodium glutamate, organic material etc. can discharge source installation this device at VOCs such as chimney, purify emission after up to standard again. A plurality of series-parallel combination operation modes are adopted, and centralized industrial application is realized; aiming at mobile emission scenes of automobiles, diesel vehicles and the like, the device can be installed at a smoke exhaust pipe and only needs to be operated by one device; aiming at local non-centralized emission pollution sources and regional transmission pollution, VOCs waste gas enters indoor space (such as a family room), on one hand, the VOCs waste gas can be independently operated by a single machine, and can also be arranged to be operated by a plurality of machines to construct distributed defense.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. Purifier based on plasma and electrostatic precipitator coprocessing VOCs waste gas, its characterized in that includes:
the air conditioner comprises a shell, a fan and a fan, wherein the shell is provided with an accommodating space, a plurality of uniformly distributed air inlets are formed in two sides of the shell, an air outlet is formed in the rear side of the shell, and the fan is detachably arranged on the air outlet;
the first plasma component comprises two first fixing plates which are arranged at intervals, and a plurality of first wire electrodes and first plate electrodes which are uniformly distributed are fixedly arranged on opposite sides of the two first fixing plates respectively and are used for sterilizing VOCs waste gas;
the second plasma component comprises two second fixing plates which are arranged at intervals, and a plurality of second wire electrodes and second plate electrodes which are uniformly distributed are respectively fixedly arranged on opposite sides of the two second fixing plates and are used for degrading the sterilized VOCs waste gas;
the electrostatic dust removal assembly comprises a plurality of ground electrode plates and high-voltage electrodes which are arranged in a staggered mode and is used for removing dust from the sterilized and degraded VOCs waste gas;
VOCs waste gas enters through the air inlet, is sequentially treated by the first plasma component, the second plasma component and the electrostatic dust removal component and then is discharged from the air outlet under the action of the fan, residual space charges in working medium gas after the first plasma component discharges contribute to dispersion discharge of the second plasma component, and the method for promoting secondary dispersion discharge by utilizing the preceding stage discharge residual space charges contributes to long-term stable work of the system;
the applied voltage of the first plasma assembly and the second plasma assembly is 6-8kV, and the frequency is 20kHz;
photoelectric sensors and ultrasonic sensors are arranged in the discharge areas of the first plasma assembly and the second plasma assembly, and the ultrasonic sensors and the photoelectric sensors are fixedly connected with the inner wall of the shell;
the input end of the control panel is electrically connected with the output ends of the ultrasonic sensor and the photoelectric sensor, and the control panel is bidirectionally connected with the power supplies of the first plasma component and the second plasma component and is used for controlling the output voltage of the power supplies;
the distance between each ground electrode plate and the adjacent high-voltage electrode is the same;
the number of the ground electrode plates and the number of the high-voltage electrodes are 10-20, and the distance between each ground electrode plate and the adjacent high-voltage electrode is 10-20mm;
and a first plasma component and a second plasma component are arranged on two sides of the electrostatic dust collection component.
2. A device for purifying exhaust gases containing VOCs based on a combination of plasma and electrostatic precipitation as claimed in claim 1, wherein both of the first and second fixing plates are provided with a blocking medium to prevent breakdown of discharge between electrodes.
3. The plasma-based and electrostatic precipitator collaborative processing purification apparatus for VOCs exhaust gas as recited in claim 2, wherein the blocking medium is an alumina ceramic blocking medium.
4. The apparatus according to claim 1, wherein a collecting box for collecting dust is further disposed at the lower end of the electrostatic precipitator assembly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111053774.7A CN113996440B (en) | 2021-09-09 | 2021-09-09 | Purifier based on plasma and electrostatic precipitator coprocessing VOCs waste gas |
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| CN202111053774.7A CN113996440B (en) | 2021-09-09 | 2021-09-09 | Purifier based on plasma and electrostatic precipitator coprocessing VOCs waste gas |
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| KR20230106455A (en) * | 2022-01-06 | 2023-07-13 | 현대자동차주식회사 | Method for treating exhaust gas, and equipment therefor |
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| CN209264899U (en) * | 2018-11-29 | 2019-08-16 | 国网湖南省电力有限公司 | Insulated pull rod local discharge test device |
| CN111482064A (en) * | 2020-03-31 | 2020-08-04 | 常州机电职业技术学院 | Plasma purification device and purification method for waste gas of heat treatment workshop |
| CN112283849A (en) * | 2020-10-29 | 2021-01-29 | 吉林农业科技学院 | Plasma purifier |
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