CN108479341A - A kind of plasma body cooperative iron-carbon micro-electrolysis handles the device of organic flue gas - Google Patents

Abstract

The invention is a device for treating organic flue gas with plasma and iron-carbon micro-electrolysis, which includes a plasma generator and an absorption tower connected to each other. The gas outlet is connected, and the iron-carbon packing layer, spray layer, mist eliminator, and activated carbon filter are arranged in the absorption tower in sequence from bottom to top, and the lower side wall of the absorption tower is connected with the slurry circulation pump, and the slurry circulation The pump is connected with the spray layer. The invention adopts plasma to cooperate with iron-carbon micro-electrolysis to purify organic flue gas, the pulse high-voltage power supply and the filling amount of iron-carbon filler can be adjusted, the process has a wide range of application and strong adaptability to working conditions; Corona discharge plasma cooperates with iron-carbon micro-electrolysis to purify the tail gas for secondary treatment, with low equipment investment and operation costs, purification efficiency of over 95%, and no secondary pollution.

Description

A device for treating organic flue gas with plasma and iron-carbon micro-electrolysis

technical field

The invention relates to the technical field of organic fume treatment, in particular to a device for plasma and iron-carbon micro-electrolysis treatment of organic fume.

Background technique

Organic flue gas (VOCs) treatment technology can be divided into two categories: one is recovery technology, which enriches and separates VOCs by changing the physical conditions such as temperature and pressure in a certain process, and gives priority to recycling, and takes further steps for those that have no use value. Harmless treatment mainly includes condensation method, adsorption method, absorption method and membrane separation method; the second is destruction technology, through chemical or biochemical reactions, heat, light, catalysts and microorganisms are used to transform organic matter into non-toxic carbon dioxide and water. Or low-toxic small molecule compounds, VOCs can be treated, mainly including combustion method, low temperature plasma technology, photocatalytic degradation technology and biotechnology. Among them, the active particles such as high-energy electrons and free radicals produced by low-temperature plasma can act on the organic pollutants in the flue gas, causing the pollutant molecules to decompose in a very short time, and subsequent various reactions occur to achieve degradation The purpose of pollutants, high efficiency in the treatment of organic flue gas, has been a lot of research and application.

CN107441885A discloses a device and method for plasma synergistic catalytic treatment of organic flue gas, including an absorption tower, a plasma reactor and a catalytic reactor connected in sequence; wherein, a controlled three-way valve is arranged at the inlet of the absorption tower ; The controlled three-way valve makes the flue gas inlet communicate with the absorption tower inlet respectively or makes the flue gas inlet communicate with the bypass of the absorption tower; the air inlet of the plasma reactor is provided with a controlled three-way valve; the controlled three-way valve respectively connects the gas outlet of the absorption tower with the air inlet of the plasma reactor or communicates the gas outlet of the absorption tower with the bypass of the plasma reactor; also includes a gas analysis instrument, The gas inlet is provided with a detection point, and the gas analysis instrument detects the flue gas in real time through the detection point, and outputs a control signal to each controlled three-way valve according to the detection result to control its switching. This technical solution mainly solves the problem that organic by-products are easily deposited on the electrode surface of the plasma reactor and affects the discharge performance, and the treatment of organic fume is not efficient enough.

CN107042039A discloses a device and treatment method for dielectric barrier discharge low-temperature plasma synergistic catalytic treatment of organic fume, including a main device and a low-temperature plasma generating device; the main device is divided into a filter bed and a reaction chamber from bottom to top and an adsorption catalyst bed layer, the low-temperature plasma generating device is located outside the reaction chamber and is seamlessly connected with the reaction chamber. This technical solution mainly separates the low-temperature plasma generator from the flue gas, which solves the problem of avoiding the corrosion of the discharge device caused by direct contact. However, the treatment of organic flue gas only relies on the effective combination of low-temperature plasma oxidation and catalytic oxidation. It is difficult to deal with complex organic flue gas combinations in industry, and there is also a lack of further treatment after absorption, and the treatment effect is not outstanding enough.

To sum up, the prior art still lacks an organic flue gas treatment device that utilizes plasma synergistic catalysis and can efficiently treat various situations.

Contents of the invention

The object of the present invention is to aim at the defects existing in the prior art, to provide a kind of pulsed corona discharge plasma synergistic iron-carbon micro-electrolysis to purify organic flue gas, and through the spray layer and active carbon filter to pulse corona discharge plasma synergistic iron-carbon After micro-electrolysis purification, the tail gas is treated twice, and the treatment efficiency is high. The technical scheme of the present invention is as follows.

A device for treating organic flue gas with plasma and iron-carbon micro-electrolysis, including a plasma generator and an absorption tower connected to each other, the plasma generator is provided with a flue gas inlet, and the top of the absorption tower is provided with a flue gas outlet , the inside of the absorption tower is provided with an iron-carbon packing layer, a spray layer, a mist eliminator, and an activated carbon filter in sequence from bottom to top, and the lower side wall of the absorption tower is connected to a slurry circulation pump, and the slurry circulation pump is connected to the The above spray layer connection.

The organic flue gas to be treated enters the plasma generator through the flue gas inlet, enters the absorption tower after plasma treatment, and is successively treated in the absorption tower by iron-carbon packing layer, spray layer, mist eliminator, activated carbon filter, etc. The treated flue gas is discharged through the flue gas outlet, and the slurry circulation pump 10 transports the slurry from the bottom of the tower to the spray layer 6 for spraying.

The plasma generator produces a large number of high-energy electrons, positive and negative particles, excited state particles, and highly oxidizing O ₃ and active free radicals (·OH, ·O, etc.) through pulsed corona discharge, and the organic fume is introduced After the plasma generator, these active particles collide with the organic pollutant molecules in the flue gas. On the one hand, they can break the molecular bonds of some organic pollutants and directly decompose them into harmless gas molecules such as CO ₂ and H ₂ 0, making the smoke The gas is initially purified; on the other hand, the electrons in the plasma adhere to the surface of organic pollutant molecules to charge them, which is beneficial for them to be absorbed and decomposed by iron-carbon fillers after entering the iron-carbon micro-electrolysis reaction tower. The present invention selects corona discharge, and corona discharge can work under normal pressure, and the design of the device is simple, and the cost of electrodes and power supply is relatively low; The pulse power supply method can obtain non-equilibrium plasma. Due to its high charging efficiency and large injection energy, it can form more and stronger high-energy electrons than DC corona, so that the number and energy efficiency of free radicals and active particles can be greatly improved. Improvement, and not easy to spark.

The electrode potential difference between iron and carbon in the iron-carbon filler layer will form countless tiny primary cells in the solution, and produce highly active substances in the micro-electrolysis process. When the charged organic pollutants dispersed in the solution pass through the iron-carbon packing layer immersed in the solution in the tower, they will be adsorbed on the packing, and undergo a series of redox reactions with these highly active substances, and be decomposed into CO ₂ , H ₂ O, etc., so as to achieve the purpose of purification. Therefore, the present invention can efficiently treat a variety of organic pollutants through the synergistic effect of plasma and iron-carbon micro-electrolysis, and the pulse high-voltage power supply and the filling amount of iron-carbon filler can be adjusted. The process has a wide range of application and strong adaptability to working conditions.

One or two spray layers are arranged above the iron-carbon filler layer, and several nozzles are arranged on the spray pipe of the spray layer, and the slurry circulating pump transports the slurry from the bottom of the tower to the spray layer for spraying, and the pH of the spray slurry is 2-6. Allow undegraded organic pollutants to return to the lower layer of iron-carbon filler layer for purification, improving the overall purification efficiency. A demister is installed above the spray layer, which is conducive to the attachment of water mist in the exhaust gas to form large particles of water droplets to drop, thereby reducing the content of water mist in the exhaust gas. An activated carbon filter is installed above the demister, and the exhaust gas after dehumidification enters the activated carbon filter to further purify the exhaust gas to ensure that the discharge meets the standard. Finally, the exhaust gas purified by adsorption is discharged into the atmosphere. Therefore, the present invention performs secondary treatment on the flue gas through the spray layer, mist eliminator and activated carbon filter, one is to allow untreated organic matter to return to the bottom of the tower for further treatment, and the other is to deeply treat residual organic pollutants, which can Purify the flue gas to the greatest extent, with high treatment efficiency and good environmental protection effect.

As preferably, a microbubble generating device is arranged at the bottom of the absorption tower and below the iron-carbon packing layer, a booster fan is arranged between the plasma generator and the absorption tower, and the booster fan and the microbubble generating device connect. The booster fan outside the tower transports the flue gas treated by the plasma generator to the microbubble generator, and the organic pollutants in the flue gas become microbubbles through the microbubble generator, and are evenly dispersed into the solution in the tower, so that The reaction between organic pollutants and iron-carbon fillers is more complete and efficient. The microbubble generating device brings greater resistance to the flue gas, so a booster fan is required to increase the pressure to make the microbubble generation easier and more sufficient.

Preferably, the microbubble generating device includes a main pipe and several air distribution pipes communicating with the main pipe, the air distribution pipes are uniformly arranged along the length direction of the main pipe, and the pipe wall of the air distribution pipe is provided with several micropores. The diameter of the micropores is 0.1-2000 μm. The microbubble generating device can generate microbubbles in all directions at the bottom of the tower, and can make the flue gas more uniformly disperse into the solution in the tower.

As a preference, the ion generator includes a housing, a housing inlet and a housing outlet arranged at both ends of the housing, and the inside of the ion generator is sequentially provided with a uniform orifice plate, an electric field area, and an insulator along the movement direction of the flue gas. and a power supply connection device, the electric field area includes several cylindrical dielectric materials evenly arranged, a cathode located at the center of the cylindrical dielectric material, an anode tightly sleeved outside the cylindrical dielectric material, and the cathode is connected to the power supply The input device is electrically connected, and the anode is grounded.

As a preference, the cylindrical dielectric material can be one of quartz glass and ceramics, the cathode is a barbed electrode, the adjacent distance between the barbed electrodes is 10-50mm, and the electrode length is 15-30mm. The barbed electrode is one of columnar barbed, triangular barbed, angle steel barbed, wave barbed, tubular barbed, flat steel barbed, angle steel barbed, zigzag barbed, strip barbed and fishbone barbed one or more species.

Preferably, the power access device is electrically connected to the pulse high-voltage power supply; the pulse high-voltage power supply is a DC base voltage power supply, the base voltage voltage range is 40-80kV, preferably 60KV, and the base voltage current range is 200-2000mA, The pulse voltage range is 60-120KV, preferably 80kV, the pulse width is 70-100uS, and the pulse repetition frequency is 0-200Hz. Through the high-voltage extremely narrow pulse power supply mode of pulse high-voltage power supply, non-equilibrium plasma is obtained. Due to its high charging efficiency and large injection energy, it can form more and stronger high-energy electrons than DC corona, so that free radicals and active particles can be generated. The quantity and energy efficiency have been greatly improved, and it is not easy to cause electric sparks.

Preferably, a recycling device is also included, and the recycling device is connected with the slurry circulation pump. When the present invention treats the organic matters in the flue gas, solid suspended matter such as Fe ²⁺ ion flocculation produced in the iron-carbon micro-electrolysis process will gradually accumulate in the bottom area of the absorption tower. Preferably, inclined tubes (plates) can be arranged at the bottom of the tower Sedimentation tanks, vertical flow sedimentation tanks and other sedimentation devices can better settle the suspended solids to the bottom of the tower, and then regularly pump the suspended solids into the recycling device through the slurry circulation pump for solid-liquid separation. After the slurry is purified The water is returned to the tower to recycle water resources and reduce waste water discharge, and the suspended solids are further processed to recycle resources.

Preferably, the iron-carbon filler layer is a regularized iron-carbon filler, the specific gravity of the regularized iron-carbon filler is 800-1200kg/m ³ , the porosity is not less than 65%, and the specific surface area is not less than 1.2m ² /g. The strength is not less than 1000kg/cm ² , and the mass ratio of iron to carbon is 4-6:1. The structured packing is formed by uniformly mixing iron, carbon, metal or non-metallic catalysts, activators, etc. with a particle size that meets the standard in a certain proportion, pressing and molding, and then sintering. The iron-carbon filler can be spherical, elliptical, or cylindrical. and other shapes. The present invention uses regular iron-carbon fillers, which do not need to be assembled and have less filling amount, and can avoid the problems of passivation, hardening and difficult replacement of traditional iron-carbon fillers in industrial applications, and provide greater iron-carbon micro-electrolysis reactions. Current density and better micro-electrolysis reaction effect, fast reaction rate, high purification efficiency, stable and effective long-term operation.

Preferably, the regularized iron-carbon filler is loaded with a catalyst, the weight ratio of the catalyst to the iron-carbon content is 2-8:92-98, and the catalyst is titanium, manganese, cobalt, cerium metal oxide One or more of the catalysts.

Preferably, the mist eliminator is a combination of one or more of deflector vane type, tube type, and wire mesh type, and the material of the mist eliminator can be polypropylene or FRP. FRP, Fiber Reinforced Polymer/Plastic, is a fiber-reinforced composite material, a high-performance material formed by mixing a fiber material and a matrix material (resin) in a certain proportion. Lightweight and hard, non-conductive, high mechanical strength, less recycling, corrosion resistance.

The beneficial effects of the present invention have:

(1) Use pulsed corona discharge plasma to cooperate with iron-carbon micro-electrolysis to purify organic fume. The active particles produced by plasma and the highly active substances produced by iron-carbon micro-electrolysis can treat various organic pollutants, and the pulsed high-voltage power supply , The filling amount of iron-carbon filler is adjustable, the process is applicable to a wide range, and the working conditions are highly adaptable;

(2) The plasma device uses a pulsed high-voltage power supply. Through the high-voltage extremely narrow pulse power supply mode of the pulsed high-voltage power supply, an unbalanced plasma is obtained, with high charging efficiency and large injection energy, which can greatly increase the generation of free radicals and active particles. Quantity and energy efficiency;

(3) Reasonably use the plasma device to pretreat the organic flue gas, so that the flue gas is initially purified, and at the same time, the organic pollutant molecules are charged to promote their adsorption and decomposition on the iron-carbon filler;

(4) The organic pollutants in the flue gas are evenly dispersed in the solution in the tower through the microbubble reaction device, so that the reaction with the iron-carbon filler is more sufficient and efficient;

(5) Regularized iron-carbon filler is used, no assembly is required, the filling amount is small, the service life is long, no replacement is required, only regular replenishment is required, the operation and maintenance are convenient and the cost is low, and it can avoid the existence of traditional iron-carbon fillers in industrial applications Problems such as passivation, hardening and clogging provide greater current density and better micro-electrolysis reaction effect for iron-carbon micro-electrolysis reaction, fast reaction rate and high purification efficiency;

(6) Through the spray layer and activated carbon filter, the exhaust gas after pulsed corona discharge plasma and iron-carbon micro-electrolysis purification is subjected to a second degree of control treatment, which can effectively prevent the discharge of substandard gases and ensure that the increasingly stringent emission standards are met; through circulation The solution treatment and reuse device regularly purifies and reuses the circulating solution, recycles water resources, and effectively reduces waste water discharge;

(7) The technical process of the present invention is simple, the application range is wide, the equipment investment and operation cost are low, the purification efficiency reaches more than 95%, and there is no secondary pollution.

Description of drawings

Fig. 1 schematic diagram of the structural flow of the device;

Figure 2 Schematic diagram of the structure of the microbubble generating device;

Figure 3 Schematic diagram of the structure of the plasma generator.

Reference signs: flue gas inlet 1, ion generator 2, booster fan 3, microbubble generator 4, main pipe 41, gas distribution pipe 42, micropore 43, microbubble 44, iron-carbon filler layer 5, spray layer 6. Demister 7, activated carbon filter 8, flue gas outlet 9, slurry circulation pump 10, recycling device 11,

Detailed ways

The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

A device for treating organic flue gas with plasma cooperative iron-carbon micro-electrolysis, as shown in Figure 1, includes a plasma generator 2 and an absorption tower connected to each other, the plasma generator 2 is provided with a flue gas inlet 1, and the The top of the absorption tower is provided with a flue gas outlet 9, and the interior of the absorption tower is sequentially provided with an iron-carbon filler layer 5, a spray layer 6, a demister 7, and an activated carbon filter 8. The wall is connected to a slurry circulation pump 10 which is connected to the spray layer 6 . The organic flue gas to be treated enters the plasma generator 2 through the flue gas inlet 1, enters the absorption tower after plasma treatment, and passes through the iron-carbon filler layer 5, the spray layer 6, the mist eliminator 7, and the activated carbon successively inside the absorption tower. The filter 8 and other treatment, the treated flue gas is discharged through the flue gas outlet 9, and the slurry circulation pump 10 transports the slurry from the bottom of the tower to the spray layer 6 for spraying.

The plasma generator 2 produces a large number of high-energy electrons, positive and negative particles, excited state particles, and highly oxidizing _O3 and active free radicals (·OH, ·O, etc.) After entering the plasma generator 2, these active particles collide with the organic pollutant molecules in the flue gas. On the one hand, they can break the molecular bonds of some organic pollutants and directly decompose them into harmless gas molecules such as CO ₂ and H ₂ 0. The flue gas is preliminarily purified; on the other hand, the electrons in the plasma adhere to the surface of organic pollutant molecules to charge them, which is beneficial for them to be absorbed and decomposed by iron-carbon fillers after entering the iron-carbon micro-electrolysis reaction tower. The electrode potential difference between iron and carbon in the iron-carbon filler layer 5 will form countless tiny primary cells in the solution, and produce highly active substances in the micro-electrolysis process. When the charged organic pollutants dispersed in the solution pass through the iron-carbon packing layer 5 immersed in the solution in the tower, they will be adsorbed on the packing, and undergo a series of redox reactions with these highly active substances, and be decomposed into CO ₂ , H ₂ O, etc., so as to achieve the purpose of purification. Therefore, the present invention can efficiently treat a variety of organic pollutants through the synergistic effect of plasma and iron-carbon micro-electrolysis, and the pulse high-voltage power supply and the filling amount of iron-carbon filler can be adjusted. The process has a wide range of application and strong adaptability to working conditions.

One or two spray layers 6 are arranged above the iron-carbon filler layer 3, and several nozzles are arranged on the spray pipes of the spray layer 6, and the slurry circulating pump 10 transports the slurry from the bottom of the tower to the spray layer 6 for spraying, The pH of the slurry solution is 2-6, so that the organic pollutants that have not been degraded can be returned to the lower layer of iron-carbon filler layer 5 for purification, and the overall purification efficiency is improved. A mist eliminator 7 is arranged above the spray layer 6, which is beneficial for the water mist in the exhaust gas to adhere to form large water droplets and drop, thereby reducing the water mist content in the exhaust gas. An activated carbon filter 8 is arranged above the demister 7, and the exhaust gas after dehumidification enters into the activated carbon filter 8 to further purify the exhaust gas so as to ensure that the discharge meets the standard. Finally, the exhaust gas purified by adsorption is discharged into the atmosphere. Therefore, the present invention performs secondary treatment on the flue gas through the spray layer, mist eliminator and activated carbon filter. One is to allow untreated waste to return to the bottom of the tower for further treatment, and the other is to deeply treat residual organic pollutants. It can purify flue gas to the greatest extent, with high treatment efficiency and good environmental protection effect.

As a preferred embodiment, a microbubble generating device 4 is arranged at the bottom of the absorption tower and below the iron-carbon packing layer 5, and a booster fan 3 is arranged between the plasma generator 2 and the absorption tower. 3 is connected with the microbubble generating device 4. The booster fan 3 outside the tower transports the flue gas treated by the plasma generator 2 to the microbubble generating device 4, and the organic pollutants in the flue gas become microbubbles through the microbubble generating device 5, and are evenly dispersed to the air in the tower. In the solution, the reaction between organic pollutants and iron-carbon fillers is more complete and efficient. The microbubble generating device 4 brings greater resistance to the flue gas, so the booster fan 3 is required to pressurize, so that the microbubbles can be generated more easily and fully.

As a preferred embodiment, the microbubble generating device 4 includes a main pipe 41 and several air distribution pipes 42 communicated with the main pipe 41, the air distribution pipes 42 are evenly arranged along the length direction of the main pipe 41, and the pipes of the air distribution pipes 42 The wall is provided with several micropores 43, and the diameter of the micropores 43 is 0.1-2000 μm. The microbubble generating device 4 can generate microbubbles 44 in all directions at the bottom of the tower, which can make the flue gas more uniformly disperse into the solution in the tower.

As a preferred embodiment, the ion generator 2 includes a housing 21, a housing inlet 22 and a housing outlet 23 arranged at both ends of the housing, and the inside of the ion generator 2 is sequentially provided with A uniform orifice plate 24, an electric field area, an insulator 28 and a power supply connection device 29, the electric field area includes several cylindrical dielectric materials 25 uniformly arranged, a cathode 27 located at the center of the cylindrical dielectric material 25, and tightly sleeved in the cylindrical The anode 26 outside the dielectric material 25, the cathode 27 is electrically connected to the power access device 29, and the anode 26 is grounded.

As a preferred embodiment, the cylindrical dielectric material 25 can be one of quartz glass and ceramics, the cathode 27 is a barbed electrode, the adjacent distance between the barbed electrodes is 10-50 mm, and the electrode length is 15 mm. -30mm, the barbed electrodes are columnar barbed, triangular barbed, angle steel barbed, wave barbed, tubular barbed, flat steel barbed, angle steel barbed, zigzag barbed, strip barbed and fish bone One or more of thorns.

As a preferred embodiment, the power access device 29 is electrically connected to the pulse high-voltage power supply 210; the pulse high-voltage power supply 210 is a DC base voltage power supply, the base voltage range is 40-80kV, preferably 60KV, and the base voltage current The range is 200-2000mA, the pulse voltage range is 60-120KV, preferably 80kV, the pulse width is 70-100uS, and the pulse repetition frequency is 0-200Hz. Through the high-voltage extremely narrow pulse power supply mode of pulse high-voltage power supply, non-equilibrium plasma is obtained. Due to its high charging efficiency and large injection energy, it can form more and stronger high-energy electrons than DC corona, so that free radicals and active particles can be generated. The quantity and energy efficiency have been greatly improved, and it is not easy to cause electric sparks.

As a preferred embodiment, a recycling device 11 is also included, and the recycling device 11 is connected to the slurry circulation pump 10 . When the present invention handles the organic matter in the flue gas, the solid suspended matter such as Fe ²⁺ ion flocculation that produces in the iron-carbon micro-electrolysis process can be gradually squeezed in the bottom area of the absorption tower, preferably, can be provided with inclined pipe (plate) at the bottom of the tower ) sedimentation tank, vertical flow sedimentation tank and other sedimentation devices, the solid suspended matter can be better precipitated at the bottom of the tower, and then the solid suspended matter is regularly pumped into the recycling device 11 through the slurry circulation pump 10 for solid-liquid separation, and the slurry The purified water is returned to the tower to recycle water resources and reduce waste water discharge, and the suspended solids are further treated to recycle resources.

As a preferred embodiment, the iron-carbon filler layer 3 is a regularized iron-carbon filler, the specific gravity of the regularized iron-carbon filler is 800-1200kg/m3, the porosity is not less than 65%, and the specific surface area is not less than 1.2m ² / g, the physical strength is not less than 1000kg/cm ² , and the mass ratio of iron to carbon is 4-6:1. The structured packing is formed by uniformly mixing iron, carbon, metal or non-metallic catalysts, activators, etc. with a particle size that meets the standard in a certain proportion, pressing and molding, and then sintering. The iron-carbon filler can be spherical, elliptical, or cylindrical. and other shapes. The present invention uses regular iron-carbon fillers, which do not need to be assembled and have less filling amount, and can avoid the problems of passivation, hardening and difficult replacement of traditional iron-carbon fillers in industrial applications, and provide greater iron-carbon micro-electrolysis reactions. Current density and better micro-electrolysis reaction effect, fast reaction rate, high purification efficiency, stable and effective long-term operation.

As a preferred embodiment, the regularized iron-carbon filler is loaded with a catalyst, the weight ratio of the catalyst to the iron-carbon content is 2-8:92-98, and the catalyst is titanium, manganese, cobalt, cerium One or more of metal oxide catalysts.

As a preferred embodiment, the mist eliminator 7 is a combination of one or more of baffle vane type, tube type, and wire mesh type, and the material of the mist eliminator 7 can be selected from polypropylene or FRP. FRP is a fiber-reinforced composite material, which is a high-performance material formed by mixing a fiber material and a matrix material (resin) in a certain proportion. Lightweight and hard, non-conductive, high mechanical strength, less recycling, corrosion resistance.

Application example:

Applying the system of the present invention to actually process industrial organic flue gas, the purifying effect on organic pollutants is shown in the table below.

Performance Application Example 1 Application Example 2 Application Example 3 Flue gas volume/(Nm ³ /h) 15000 30000 50000 Inlet VOCs concentration/(mg/Nm ³ ) 1510 1420 1228 Export VOCs concentration/(mg/Nm ³ ) 35.2 43.6 56.0 Purification efficiency/(%) 97.67 96.93 95.44

It can be seen that the present invention can efficiently and deeply treat VOC, and the purification efficiency exceeds 95%, which has a very good purification effect.

According to the disclosure and teaching of the above-mentioned specification, those skilled in the art to which the present invention belongs can also make changes and modifications to the above-mentioned embodiment. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims (10)

1. a kind of plasma body cooperative iron-carbon micro-electrolysis handles the device of organic flue gas, which is characterized in that including interconnection Plasma generator and absorption tower, the plasma generator are provided with smoke inlet, are provided at the top of the absorption tower Exhanst gas outlet is disposed with iron carbon filler layer, spraying layer, demister, activated carbon filtering inside the absorption tower from bottom to top Device, the absorption tower lower sides are connect with slurry circulating pump, and the slurry circulating pump is connect with the spraying layer.

2. a kind of device as described in claim 1, which is characterized in that setting below the absorb the bottom of the tower, iron carbon filler layer There is microbubble generator, booster fan, the booster fan and institute are provided between the plasma generator and absorption tower State microbubble generator connection.

3. a kind of device as claimed in claim 2, which is characterized in that the microbubble generator includes supervisor and connects with supervisor Several logical gas distribution pipes, the gas distribution pipe are evenly arranged along supervisor's length direction, and the tube wall of the gas distribution pipe is provided with Several micropores.

4. a kind of device as claimed in claim 2 or claim 3, which is characterized in that the plasma generator includes shell and setting Housing inlet port, housing outlets at shell both ends are disposed with inside the plasma generator even along smoke movement direction Spiracular plate, electric field region, insulator and plant-grid connection device, the electric field region include several tubular medium materials being evenly arranged Material, the cathode positioned at tubular dielectric material center, the anode that is tightly placed in outside tubular dielectric material, the cathode with it is described Plant-grid connection device is electrically connected, the plus earth.

5. a kind of device as claimed in claim 4, which is characterized in that the tubular dielectric material is in quartz glass, ceramics One kind, the cathode be arista electrode, the arista electrode adjacent spacing be 10-50mm, electrode length 15-30mm；Institute State arista electrode be column prickle, triangle prickle, angle steel prickle, waveform prickle, tubulose prickle, band steel prickle, angle steel prickle, It is one or more in zigzag prickle, strip prickle and fish-bone prickle.

6. a kind of device as claimed in claim 4, which is characterized in that the plant-grid connection device is electrically connected with pulsed high voltage generator It connects；The pulsed high voltage generator is DC base voltage power supply, and it is 40-80kV that base, which presses voltage range, and base current voltage range is 200- 2000mA, pulse voltage amplitude 60-120KV, pulse width 70-100uS, pulse recurrence frequency 0-200Hz.

7. a kind of device as claimed in claim 4, which is characterized in that further include reclamation set, the reclamation set with it is described Slurry circulating pump connects.

8. a kind of device as described in claims 1 or 2 or 3 or 7, which is characterized in that the iron carbon filler layer is regular iron Carbon filler, the regular iron carbon filler proportion are 800-1200kg/m³, not less than 65%, specific surface area is not less than porosity 1.2m²/ g, physical strength are not less than 1000kg/cm², iron carbon mass ratio is 4-6:1.

9. a kind of device as claimed in claim 8, which is characterized in that load has catalyst on the regular iron carbon filler, The weight ratio of the catalyst and the iron carbon content is 2-8：92-98, the catalyst are titanium, manganese, cobalt, cerium metal oxide It is one or more in catalyst.

10. a kind of device as described in claims 1 or 2 or 3 or 7, which is characterized in that the demister be baffling vane type, The material of one or more combinations in tubular type, screen type, the demister is polypropylene or FRP.