CN111135708B - Organic waste gas treatment system and method - Google Patents
Organic waste gas treatment system and method Download PDFInfo
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- CN111135708B CN111135708B CN202010029804.XA CN202010029804A CN111135708B CN 111135708 B CN111135708 B CN 111135708B CN 202010029804 A CN202010029804 A CN 202010029804A CN 111135708 B CN111135708 B CN 111135708B
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- B01D53/14—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 absorption
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- B01D53/14—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 absorption
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- 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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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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Abstract
The invention discloses an organic waste gas treatment system and a method, comprising a condensation pressurization gas storage tank, a pressure reducing valve, a bubbler, an absorption cavity, a pressurization disc, an interlayer, a low-temperature plasma reactor, a shunting cap and a photocatalytic reaction cavity; when the system works, the high-pressure bubbles are utilized, and the flow of absorption liquid is promoted by the turbulators, so that the gas-liquid contact time and area are greatly increased; the spiral flowing of the gas is realized through the passage structure of the gas inlet and the flow distribution cap of the low-temperature plasma reactor and the flow guide vanes in the channel of the plasma reactor, and the reaction time of the gas is prolonged. Through the structure and the treatment mode, the problems that the absorbent is not fully contacted with organic waste gas, the effect and the function of removing the waste gas by a plasma method and a photocatalysis method are incomplete, the energy consumption is high when the conventional multi-process combined use is carried out, the equipment volume is large, the treatment effect is not ideal and the like in the prior art are solved.
Description
Technical Field
The invention relates to the field of waste gas treatment, in particular to an organic waste gas treatment system and method.
Background
Organic waste gases are also known as Volatile Organic Compounds (VOCs), which are also known by the acronym "volatile Organic compounds," and include formaldehyde, Organic sulfur compounds, nitrogen, ammonia, alcohols, esters, and alkanes. At present, there are many methods for treating organic waste gas, mainly including absorption method, adsorption method, condensation method, membrane separation method, biological method, plasma method, photocatalytic method, direct combustion method, regenerative combustion method, porous medium combustion method, catalytic combustion method, and the like. Because of the difference of the material compositions of different organic waste gases, the application range of various treatment methods is limited, so that a single treatment process cannot meet the treatment requirements, and the combined use of multiple processes is the future development direction. However, due to the differences of the different waste gas treatment methods in the adopted equipment, materials and processes, if the waste gas treatment methods are simply combined, on one hand, the waste gas treatment effect is not ideal, and on the other hand, the energy consumption is high and the equipment volume is large. In the existing organic waste gas treatment method, the contact between the organic waste gas and the absorbent and the adsorbing material is insufficient, and the waste gas removal efficiency and function of a plasma method and a photocatalysis method need to be improved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the organic waste gas treatment method and device adopted in the prior art have the problems of insufficient contact between an absorbent and organic waste gas, imperfect waste gas removal effect and function by a plasma method and a photocatalysis method, high energy consumption, large equipment volume, unsatisfactory treatment effect and the like when the conventional multiple processes are combined for use, and provide an organic waste gas treatment system and method for solving the problems.
The invention is realized by the following technical scheme:
an organic waste gas treatment system comprises a condensation pressurization gas storage tank, a pressure reducing valve, a bubbler, an absorption cavity, a pressurization disc, an interlayer, a low-temperature plasma reactor, a flow dividing cap and a photocatalytic reaction cavity; wherein, the air inlet of the condensation pressurization air storage tank is connected with the organic waste gas outlet, and the air outlet of the condensation pressurization air storage tank is connected with the inlet passage of the bubbler through a pressure reducing valve; the bubbler is positioned in the absorption cavity and is shaped like a funnel with a large upper part and a small lower part; the pressurizing disc is positioned at the upper part of the absorption cavity, and a turbulator is arranged below the pressurizing disc and positioned at the upper layer of the absorption liquid in the absorption cavity; the interlayer is positioned above the pressurizing disc and is provided with 3 holes which are uniformly distributed in the circumferential direction; the low-temperature plasma reactor is positioned above the interlayer, 3 gas inlet pipelines of the low-temperature plasma reactor are connected with 3 holes on the interlayer, the 3 gas inlet pipelines are respectively provided with pipelines and are converged above the interlayer to form a single channel which is used as a reaction channel of the low-temperature plasma reactor; the flow distribution cap is positioned at the end part of the air outlet of the low-temperature plasma reactor; the photocatalytic reaction cavity is covered outside the low-temperature plasma reactor and is coupled with the interlayer, and an air outlet is formed in the bottom of the photocatalytic reaction cavity;
further, a receiving disc is arranged at the bottom of the condensation pressurization gas storage tank, an air pressure sensor is arranged in an inlet passage of the condensation pressurization gas storage tank and the bubbler, and an air pressure sensor is arranged below the pressurization disc;
furthermore, small round holes are uniformly distributed at the outlet of the bubbler, the outlet of the bubbler can be closed in a program-controlled manner, the pressurizing disc is provided with a vent hole, the opening and closing of the vent hole can be controlled in a program-controlled manner, the pressurizing disc can move up and down through a telescopic connecting rod connected with the interlayer, and the turbulator is an impeller;
furthermore, the electrode of the low-temperature plasma reactor is a nozzle electrode used for spraying a catalyst, 3 air inlet pipelines of the low-temperature plasma reactor are converged at different heights above the interlayer to form a single channel, the height of the nozzle electrode is higher than the height of the 3 air inlet pipelines at the highest interface of the reaction channel, and a plurality of guide vanes are arranged in the reaction channel;
further, the catalyst is methanol;
furthermore, the diameter of an air outlet of the low-temperature plasma reactor is gradually reduced, and the air outlet is coupled with the flow distribution cap, the flow distribution cap can rotate through program control, and the side surface of the flow distribution cap is provided with a plurality of air outlets;
further, the inner side of the cavity wall of the photocatalytic reaction cavity is coated with a photocatalyst, and an ultraviolet generator is arranged outside the low-temperature plasma reactor.
The invention also provides an organic waste gas treatment method, which comprises the following steps:
(1) organic waste gas enters a condensation pressurization gas storage tank through a gas inlet of the condensation pressurization gas storage tank, partial organic gas in the organic waste gas is condensed through temperature reduction and pressurization and falls into a receiving disc, and the condensed gas enters an inlet passage connected with a bubbler through a pressure reducing valve;
(2) controlling the outlet of the bubbler and the vent hole on the pressurizing disc to be in a closed state through program control, and adjusting the position of the pressurizing disc to ensure that the air pressure value of the air pressure sensor below the pressurizing disc is higher than the standard atmospheric pressure and is kept smaller than the set threshold of the air pressure sensor in the connecting passage of the bubbler;
(3) starting the turbulator, and after the absorption liquid in the absorption cavity flows sufficiently, opening an outlet of the bubbler to ensure that the gas is in sufficient contact with the absorption liquid in the form of a large number of small bubbles, and part of the organic waste gas is absorbed by the absorption liquid;
(4) opening the vent hole on the pressurizing disc, allowing the gas absorbed by the absorption liquid to enter the gas inlet of the low-temperature plasma reactor through the vent hole and the 3 through holes of the interlayer, applying high-voltage discharge on the nozzle electrode of the low-temperature plasma reactor after the gas enters the gas inlet of the low-temperature plasma reactor, and spraying a catalyst on the nozzle electrode;
(5) the gas passing through the low-temperature plasma reactor enters the flow distribution cap through the gas outlet of the reactor, and the program-controlled flow distribution cap rotates to enable the gas to flow downwards in a spiral manner when being discharged from the gas outlet of the flow distribution cap;
(6) and starting an ultraviolet generator outside the low-temperature plasma reactor, so that the gas entering the photocatalytic reaction cavity is catalyzed by the photocatalyst and then is discharged through the gas outlet.
Through the action of the steps, the purification of the organic waste gas can be realized, and the effect is obvious.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the invention, by digging the treatment characteristics of each organic waste gas treatment mode, the correlation cooperativity among the treatment modes is fully exerted, and a proper organic waste gas treatment method is selected for cooperation, so that the purposes of saving energy consumption, improving the utilization rate of absorption liquid and catalyst and improving the treatment effect can be realized;
2. through the organic combination of condensation, absorption, low-temperature plasma and photocatalysis modes, the purification efficiency can be greatly improved, and the volume of the system can be greatly reduced through designing the instrument structure and layout optimization of each treatment mode;
3. in the absorption cavity, the bubble size can be obviously reduced by foaming under high pressure, and the flow of absorption liquid is promoted by the turbulator, so that the gas-liquid contact time and area are greatly increased, and the utilization rate of the absorption liquid is improved; the spiral flowing of gas can be realized through the 3-channel structure of the gas inlet and the flow distribution cap of the low-temperature plasma reactor and the flow guide vanes in the channel of the plasma reactor, the reaction time of the gas in the reaction channel and the reaction cavity is prolonged, and the treatment efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of a processing system according to the present invention;
FIG. 2 is an exploded view of a portion of the vent hole of the pressurized disk of the present invention;
FIG. 3 is a flow chart of the processing method of the present invention.
The figures are referenced to illustrate: 1. condensing and pressurizing the gas storage tank; 2. a pressure reducing valve; 3. a bubbler; 4. an absorption chamber; 5. a pressure plate is added; 6. an interlayer; 7. a low temperature plasma reactor; 8. a shunt cap; 9. a photocatalytic reaction chamber; 10-11, an air pressure sensor; 12. a turbulator; 13. holes in the interlayer; 14. a gas inlet pipeline of the low-temperature plasma reactor; 15. a reaction channel of a low temperature plasma reactor; 16. controlling the pressure of the tank; 17. a vent hole on the pressure plate; 18. a telescopic connecting rod; 19. a nozzle electrode; 20. a guide vane; 21. a photocatalyst 21; 22. an ultraviolet ray generator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Referring to fig. 1, the organic waste gas treatment system of the present invention comprises a condensation pressurization gas storage tank 1, a pressure reducing valve 2, a bubbler 3, an absorption cavity 4, a pressurization disc 5, an interlayer 6, a low temperature plasma reactor 7, a flow dividing cap 8, and a photocatalytic reaction cavity 9; wherein, the air inlet of the condensation pressurization air storage tank 1 is connected with the organic waste gas outlet; an air pressure sensor 10 is arranged in a connecting passage of the condensation pressurization air storage tank 1 and the bubbler 3, and an air pressure sensor 11 is arranged below the pressurization disc; the air outlet of the condensation pressurization air storage tank 1 is connected with the inlet of the bubbler 3 through a pressure reducing valve 2; the bubbler 3 is positioned in the absorption cavity 4 and is shaped like a funnel with a big top and a small bottom; the pressurizing disc 5 is positioned at the upper part of the absorption cavity 4, a turbulator 12 is arranged below the pressurizing disc 5, and the turbulator 12 is positioned at the upper layer of the absorption liquid in the absorption cavity 4; the interlayer 6 is positioned above the pressure adding plate 5, the interlayer 6 is provided with 3 holes 13 which are uniformly distributed in the circumferential direction, the low-temperature plasma reactor 7 is positioned above the interlayer 6, 3 gas inlet pipelines 14 of the low-temperature plasma reactor 7 are connected with the 3 holes 13 on the interlayer, the 3 gas inlet pipelines 14 are respectively provided with pipelines and are converged above the interlayer to form a single channel which is used as a reaction channel 15 of the low-temperature plasma reactor; the flow distribution cap 8 is positioned at the end part of the air outlet of the low-temperature plasma reactor 7; the photocatalytic reaction cavity 9 covers the outside of the low-temperature plasma reactor 7 and is coupled with the interlayer 6, and an air outlet is formed at the bottom of the reaction cavity 9; the arrows in the figure indicate the gas flow direction.
The bottom of the condensing and pressurizing gas storage tank 1 is provided with a receiving disc (not shown in figure 1) for receiving liquid or solid matters after the organic waste gas is condensed, the height of the gas outlet of the condensing and pressurizing gas storage tank 1 is higher than the position of the receiving disc, the temperature and the gas pressure of the condensing and pressurizing gas storage tank 1 are different according to the approximate composition type of the organic waste gas, but in the invention, the temperature and the gas pressure are higher than those of the waste gas treated by using a condensing method alone, the gas pressure is lower (so the energy consumption is relatively reduced), because a subsequent further treatment process is provided, and the requirements of the subsequent treatment method on the temperature and the gas pressure are not allowed to be too low temperature and too high gas pressure, in the invention, the temperature of the condensing and pressurizing gas storage tank 1 is 20-60 ℃ in general, and the gas pressure is 5-7 standard atmospheric pressures.
The air outlet of the condensation pressurization air storage tank 1 is connected with the bubbler 3 through a pressure reducing valve 2, a pressure control tank 16 is arranged above the pressure reducing valve 2, the pressure reducing valve 2 is used for storing gas released when the pressure reducing valve reduces the pressure of a gas outlet of the condensation pressurization gas storage tank 1 and a passage section of an inlet of the bubbler 3, and the gas after condensation treatment is prevented from being condensed again in a passage of the bubbler 3 (if the pressure reducing valve 2 is not arranged, the gas outlet of the condensation pressurization gas storage tank 1 is directly connected with the bubbler 3, the temperature and the pressure in the whole passage are the same, partial condensation phenomenon also occurs in the passage, and after the gas passes through the pressure reducing valve 2, the pressure in the passage is controlled within 3-4 standard atmospheric pressure ranges, so that the passage of the bubbler 3 is blocked, a filter (not shown in fig. 1) is also provided behind the pressure reducing valve 2 to prevent condensed liquid or occasional dust entrained in the high pressure gas from entering the bubbler 3.
The absorption liquid is selected from a plurality of choices, and can be light diesel oil, silicon oil, water or composite absorption liquid (the components are mixed liquid of water, oil substances, additives and the like) according to the content and the component difference of the actually treated organic waste gas; the absorption liquid in the absorption cavity 4 needs to be recovered, processed and reused after being used for a certain frequency, and the conventional processing means on the market is adopted, and the details are not repeated here.
The small round holes (not shown in figure 1) are uniformly distributed at the outlet of the bubbler 3, the outlet of the bubbler 3 can be closed in a program control mode, specifically, the small round holes are also formed in the thin sheet which is consistent with the outlet of the bubbler 3 in size and are identical to the small round holes uniformly distributed at the outlet, when the thin sheet needs to be closed in a program control mode, the thin sheet is rotated in the program control mode, the thin sheet and the round holes at the outlet of the bubbler 3 are staggered in position, the small round holes are blocked, and the diameter of each small round hole is 0.5-1 mm.
The pressurizing disc 5 is provided with vent holes 17, the vent holes 17 can be opened and closed under the program control (the structure can be seen in an explosion diagram of the vent holes of the pressurizing disc shown in fig. 3), the opening and closing under the program control is similar to the opening and closing under the program control of the outlet of the bubbler 3, the maximum number of the vent holes on the pressurizing disc 5 is 3, the hole diameter is far larger than 0.5-1mm, the setting is specifically based on the size of the device, the pressurizing disc 5 can move up and down through telescopic connecting rods 18 connected with the interlayer 6, and the turbulator 12 is a three-impeller.
The function of the two pressure sensors (10, 11) provided is to ensure that the pressure inside the absorption chamber 4 is above the standard atmospheric pressure and remains below the pressure in the bubbler path by a threshold value, preferably 0.1 standard atmospheric pressure, ensuring that the bubbler 3 outlet is normally frothed.
The electrode of the low-temperature plasma reactor 7 is a nozzle electrode 19 used for spraying a catalyst, 3 air inlet pipelines 14 (the pipelines have various shapes and can be straight pipes or arc-shaped bent pipes and the like) of the low-temperature plasma reactor are converged at different heights above the interlayer 6 to form a single channel, the height of the nozzle electrode 19 is higher than the highest interface height of the 3 air inlet pipelines 14 in the reaction channel 15, and a plurality of guide vanes 20 (preferably, the number of the guide vanes is 10-20, and the size is determined according to the size of the reaction channel) are arranged in the reaction channel 15; the catalyst is methanol; through the 3 air inlet pipelines 14 and the guide vanes 20 which are converged at different heights, the gas exhausted from the absorption cavity 4 forms spiral gas flow inside the reaction channel 15, and is fully mixed with the catalyst sprayed by the nozzle electrode 19, and the reaction time of the gas flow and the low-temperature plasma is prolonged due to spiral motion, so that the reaction effect is improved.
The diameter of the air outlet of the low-temperature plasma reactor 7 is gradually reduced, and the low-temperature plasma reactor is coupled with the flow distribution cap 8, the flow distribution cap 8 can rotate through program control, and the side surface of the flow distribution cap 8 is provided with a plurality of air outlets (preferably 3-6), so that the air discharged from the air outlet of the low-temperature plasma reactor 7 is discharged downwards through the plurality of air outlets on the side surface of the flow distribution cap 8; because the shunting cap 8 discharges gas in a rotating way, the gas moves in the photocatalytic reaction cavity 9 in a spiral way, the reaction time of the gas flow and the photocatalyst is prolonged, and the reaction effect is improved.
The inner side of the wall of the photocatalytic reaction cavity 9 is coated with a photocatalyst 21, and the outer part of the low-temperature plasma reactor 7 is provided with an ultraviolet generator 22.
Outside the gas outlet of the bottom of the photocatalytic reaction cavity 9, according to actual requirements, a gas detection device (not shown in fig. 1) can be arranged to detect whether the exhaust gas meets the emission standard or not, if so, the exhaust gas is directly discharged, otherwise, the exhaust gas can be conveyed back to the organic waste gas outlet for treatment again or directly enter a collection bin through a backflow channel or the collection bin, and independent purification treatment is carried out.
The openings of the passages and the pipelines can be provided with filters according to actual requirements to filter possibly entrained liquid drops or fine particles.
After the organic waste gas is discharged from the condensation pressurization gas storage tank 1, the gas pressure of the organic waste gas is in the process of continuously reducing in the whole treatment passage, and when the organic waste gas is discharged from the gas outlet of the photocatalytic reaction cavity 9, the gas pressure is basically recovered to normal atmospheric pressure, in the whole treatment process, except for the need of pressurization energy consumption in the condensation pressurization gas storage tank 1, repeated pressurization energy consumption is not needed in other places, and the purpose of increasing the utilization efficiency of an absorbent and a catalyst can be realized only by utilizing residual gas pressure; in addition, the gas temperature is only required to be reduced in the condensation pressurization gas storage tank 1, and the temperature rise/reduction is not required in other places, so that extra energy consumption is not required; in addition, because the organic waste gas is not treated by a condensation method, when the condensation pressurization and temperature reduction are carried out in the initial stage, the high energy consumption and material investment are not needed, and the lower temperature and the higher air pressure are obtained.
Referring to fig. 3, the organic waste gas treatment method of the present invention includes the following steps:
(1) organic waste gas enters a condensation pressurization gas storage tank through a gas inlet of the condensation pressurization gas storage tank, partial organic gas in the organic waste gas is condensed through temperature reduction and pressurization and falls into a receiving disc, and the condensed gas enters an inlet passage connected with a bubbler through a pressure reducing valve;
(2) the outlet of the bubbler and the vent hole on the pressurizing disc are controlled to be in a closed state through program control, the position of the pressurizing disc is adjusted, so that the air pressure value of the air pressure sensor below the pressurizing disc is higher than the standard atmospheric pressure and is kept smaller than the set threshold of the air pressure sensor in the connecting passage of the bubbler, the preferred threshold is 0.1 standard atmospheric pressure, and the outlet of the bubbler 3 can be guaranteed to be normally foamed;
(3) starting the turbulator, after the absorption liquid in the absorption cavity flows sufficiently, opening an outlet of the bubbler to enable the gas to be in sufficient contact with the absorption liquid in the form of a large number of small bubbles (as the bubbler foams under high pressure, the size of the bubbles is obviously reduced, and the flow of the absorption liquid is promoted by the turbulator, so that the gas-liquid contact time and area are greatly increased, the utilization rate of the absorption liquid is improved), and part of organic waste gas is absorbed by the absorption liquid;
(4) opening the vent hole on the pressurizing disc, allowing the gas absorbed by the absorption liquid to enter the gas inlet of the low-temperature plasma reactor through the vent hole and the 3 through holes of the interlayer, applying high-voltage discharge on a nozzle electrode of the low-temperature plasma reactor after the gas enters the gas inlet of the low-temperature plasma reactor, spraying a catalyst on the nozzle electrode, allowing the gas to lift with the catalyst to react with the plasma in the reaction channel, and purifying the organic waste gas;
(5) the gas passing through the low-temperature plasma reactor enters the flow distribution cap through the gas outlet of the reactor, and the program-controlled flow distribution cap rotates to enable the gas to flow downwards in a spiral manner when being discharged from the gas outlet of the flow distribution cap;
(6) starting an ultraviolet generator outside the low-temperature plasma reactor, so that the gas entering the photocatalytic reaction cavity is catalyzed by a photocatalyst and then is discharged through a gas outlet;
(7) according to actual demand, can pass through gaseous detection device with the gas that step (6) was discharged, detect whether discharge gas accords with emission standard, if accord with then direct discharge, otherwise the accessible lets in return flow channel or collection storehouse with this gas, carries the gas back to organic waste gas exit and carries out retreatment again or directly gets into the collection storehouse, carries out solitary purification treatment.
After the organic waste gas treated by the system and the method is detected by a detection instrument, the discharged gas meets the standard discharge requirement of VOCs, the total removal rate of the VOCs gas is more than 98 percent, the utilization rate of an absorbent and a catalyst is greatly improved, and the energy consumption is obviously reduced.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. An organic waste gas treatment system, characterized in that: comprises a condensation pressurization gas storage tank, a pressure reducing valve, a bubbler, an absorption cavity, a pressurization disc, an interlayer, a low-temperature plasma reactor, a shunting cap and a photocatalytic reaction cavity; wherein, the air inlet of the condensation pressurization air storage tank is connected with the organic waste gas outlet, and the air outlet of the condensation pressurization air storage tank is connected with the inlet passage of the bubbler through a pressure reducing valve; the bubbler is positioned in the absorption cavity and is shaped like a funnel with a large upper part and a small lower part; the pressurizing disc is positioned at the upper part of the absorption cavity, and a turbulator is arranged below the pressurizing disc and positioned at the upper layer of the absorption liquid in the absorption cavity; the interlayer is positioned above the pressurizing disc and is provided with 3 holes which are uniformly distributed in the circumferential direction; the low-temperature plasma reactor is positioned above the interlayer, 3 gas inlet pipelines of the low-temperature plasma reactor are connected with 3 holes on the interlayer, the 3 gas inlet pipelines are respectively provided with pipelines and are converged above the interlayer to form a single channel which is used as a reaction channel of the low-temperature plasma reactor; the flow distribution cap is positioned at the end part of the air outlet of the low-temperature plasma reactor; the photocatalytic reaction cavity is covered outside the low-temperature plasma reactor and is coupled with the interlayer, and an air outlet is formed in the bottom of the photocatalytic reaction cavity;
a receiving disc is arranged at the bottom of the condensation pressurization gas storage tank, an air pressure sensor is arranged in an inlet passage of the condensation pressurization gas storage tank and the bubbler, and an air pressure sensor is arranged below the pressurization disc;
the electrode of the low-temperature plasma reactor is a nozzle electrode and is used for spraying a catalyst, 3 air inlet pipelines of the low-temperature plasma reactor are converged at different heights above the interlayer to form a single channel, the height of the nozzle electrode is higher than the height of the 3 air inlet pipelines at the highest interface of the reaction channel, and a flow guide vane is arranged in the reaction channel.
2. The system of claim 1, wherein: the bubbler is characterized in that small round holes are uniformly distributed in the outlet of the bubbler, the outlet of the bubbler can be closed in a program-controlled mode, the pressurizing disc is provided with vent holes, the vent holes can be opened and closed in a program-controlled mode, the pressurizing disc can move up and down through a telescopic connecting rod connected with the interlayer, and the turbulator is an impeller.
3. The system of claim 1, wherein: the diameter of the air outlet of the low-temperature plasma reactor is gradually reduced, the air outlet is coupled with the flow distribution cap, the flow distribution cap can rotate through program control, and the side face of the flow distribution cap is provided with a plurality of air outlets.
4. The system of claim 1, wherein: the inner side of the cavity wall of the photocatalytic reaction cavity is coated with a photocatalyst, and an ultraviolet generator is arranged outside the low-temperature plasma reactor.
5. The method for treating an organic waste gas treatment system according to any one of claims 1 to 4, comprising the steps of:
(1) organic waste gas enters a condensation pressurization gas storage tank through a gas inlet of the condensation pressurization gas storage tank, partial organic gas in the organic waste gas is condensed through temperature reduction and pressurization and falls into a receiving disc, and the condensed gas enters an inlet passage connected with a bubbler through a pressure reducing valve;
(2) controlling the outlet of the bubbler and the vent hole on the pressurizing disc to be in a closed state through program control, and adjusting the position of the pressurizing disc to ensure that the air pressure value of the air pressure sensor below the pressurizing disc is higher than the standard atmospheric pressure and is kept smaller than the set threshold of the air pressure sensor in the connecting passage of the bubbler;
(3) starting the turbulator, and after the absorption liquid in the absorption cavity flows sufficiently, opening an outlet of the bubbler to ensure that the gas is in sufficient contact with the absorption liquid in the form of a large number of small bubbles, and part of the organic waste gas is absorbed by the absorption liquid;
(4) opening the vent hole on the pressurizing disc, allowing the gas absorbed by the absorption liquid to enter the gas inlet of the low-temperature plasma reactor through the vent hole and the through hole of the interlayer, applying high-voltage discharge on the nozzle electrode of the low-temperature plasma reactor after the gas enters the gas inlet of the low-temperature plasma reactor, and spraying a catalyst on the nozzle electrode;
(5) the gas passing through the low-temperature plasma reactor enters the flow distribution cap through the gas outlet of the reactor, and the program-controlled flow distribution cap rotates to enable the gas to flow downwards in a spiral manner when being discharged from the gas outlet of the flow distribution cap;
(6) and starting an ultraviolet generator outside the low-temperature plasma reactor, so that the gas entering the photocatalytic reaction cavity is catalyzed by the photocatalyst and then is discharged through the gas outlet.
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