CN1899685A - In situ regenerating method and device for medium blocking discharging plasma active carbon - Google Patents
In situ regenerating method and device for medium blocking discharging plasma active carbon Download PDFInfo
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- CN1899685A CN1899685A CN 200610047122 CN200610047122A CN1899685A CN 1899685 A CN1899685 A CN 1899685A CN 200610047122 CN200610047122 CN 200610047122 CN 200610047122 A CN200610047122 A CN 200610047122A CN 1899685 A CN1899685 A CN 1899685A
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Abstract
The in situ active carbon regenerating method and apparatus with medium blocking discharge plasma belongs to the field of chemical adsorbing separation and pollutant controlling technology. Under atmospheric pressure, low temperature unbalanced plasma generated through medium blocking discharge is used to in situ regenerate active carbon with adsorbate filled between the discharge electrodes under the action of high activity matter, ultraviolet and high energy electron bombardment, etc. The in situ active carbon regenerating apparatus consists of high voltage AC source, reactor and auxiliary device mainly. The present invention has the advantages of high regeneration efficiency, short regeneration period, no secondary pollution, no need of post-treatment, low active carbon loss, etc; and is suitable for active carbon regeneration mainly.
Description
Technical field
The invention belongs to chemical adsorbing separation and pollutant control technology field.Be particularly related to medium blocking discharging plasma active carbon in situ regeneration method and device.The present invention combines electrician's new technology, chemical adsorbing separation engineering and environmental project, utilize high-velocity electrons that dielectric barrier discharge produces, ozone, ultraviolet ray, active chemistry etc. to be adsorbed on pollutants such as waste water on the active carbon, waste gas by the comprehensive degraded of physical chemistry effect, thereby make active carbon obtain the in-situ regeneration activation.
Background technology
Active carbon is to be raw material with coal, charcoal, coconut husk etc., and through the hydrophobic nonpolar carbon absorbent that high temperature carbonization and activation are made, it has highly developed pore structure and very big specific area.This makes it have excellent adsorption capacity and stable chemical property, and acid-fast alkali-proof is difficult for fragmentation under water logging, high temperature, high pressure, is to handle good adsorbent in waste water, waste gas and the industrial production application.
Early 1960s, European and American countries begins to use in a large number active carbon adsorption to handle urban applications water and industrial wastewater.Since early 1970s, adopt charcoal treatment industrial wastewater and waste gas, no matter be technically or on range of application and treatment scale, all develop very fast, absorption aspect as wastewater treatment aspect such as printing and dyeing, chemical industry, papermaking, plating and various pernicious gases all has fairly large application, and has obtained satisfied effect.
The whole world has 50 countries to produce active carbon approximately at present.The U.S., Japan, Germany, countries such as France and Russia man's the Activated Carbon Production level that is in a leading position.The environmental issue of industrially developed country is the major impetus that promotes Activated Carbon Production development and consumption figure increase.The demand of U.S.'s active carbon in 1998 is 17.03 ten thousand t, reaches 19.75 ten thousand t in 2002.1998-2002, the average growth rate per annum of U.S.'s active carbon is 3%-5%.2002, the active carbon consumption of Japan also reached 100,000 t.Every Western Europe country's active carbon consumption also is about 100,000 t, and 2000-2003 West Europe active carbon demand annual growth is 2%.The demand of China's active carbon in 2000 is 14.0 ten thousand t, reaches 18.0 ten thousand t in 2002, and with the speed increment of annual 3%-4%.At present world's active carbon year consumption figure surpasses 1,000,000 t, and with the speed increase of annual 1%-3%.
If consequent a large amount of useless charcoal is not handled, not only can cause the waste of resource, also can cause environmental pollution.Therefore, no matter still consider that from environmental angle the regeneration of carrying out active carbon is all very necessary from economic benefit.Active carbon regeneration has become the important component part in Activated Carbon Production and the operation technique.
In recent years, many countries all turn to the starting point in the exploitation of new active carbon regenerating technology.Therefore, the scientific worker of various countries has carried out extensive studies to the regeneration of active carbon, has proposed various process engineering for regenerating.The method that is used for active carbon regeneration at present mainly contains hot renovation process, wet oxidation and CWO method of reproduction, electrochemical regeneration method, solvent regeneration process, bio-regeneration method, supercritical fluid method of reproduction etc.Hot method of reproduction needs the external source heating usually, and the cost height can loss 5%-10% after the active carbon regeneration simultaneously.The wet oxidation method of reproduction causes secondary pollution to the bigger intermediate product of some hardly degraded organic substance possibility toxigenicity.Therefore people consider to adopt the CWO regenerated carbon by effective catalyst, but this method requires high, operation inconvenience to equipment, and have problem such as operation and maintenance cost height.The electrochemical regeneration method can be regenerated at the scene, but also can cause to a certain degree secondary pollution and problem such as active carbon loss, fundamentally contaminated solution problem.The solvent regeneration process specific aim is too strong, and often a kind of solvent can only some pollutant of desorption, and also will reclaim the cost height again for valuable solvent.And there are problems such as regeneration period length in bio-regeneration.The supercritical fluid method of reproduction also exists problems such as equipment requirement height.
Summary of the invention
Purpose of the present invention just provides that a kind of regeneration efficiency height, active carbon loss late are low, the regeneration period short, convenient operation and management and do not produce the medium blocking discharging plasma active carbon in situ regeneration method and the device that can effectively realize the active carbon in-situ regeneration of secondary pollution.
To be the high-velocity electrons that utilize dielectric barrier discharge to produce, ozone, ultraviolet ray, active chemistry etc. be adsorbed on pollutants such as waste water on the active carbon, waste gas by the comprehensive degraded of physical chemistry effect to basic ideas of the present invention, makes active carbon realize in-situ regeneration.
Technical solution of the present invention is:
(i) active carbon is to comprise common commercially available granular or column-shaped active carbon.When pending active carbon was granular active carbon, the particle size range of granular active carbon was 1-50mm; When pending active carbon was column-shaped active carbon, the diameter range of column-shaped active carbon was 1-50mm, and length range is 2-100mm.
(ii) medium blocking discharging plasma active carbon in-situ regeneration technology is:
The first step is filled in pending active carbon in the active carbon filler bed 5 in the reactor 2 closed reactor 2; The filling thickness of active carbon is 1-200mm.
Second step, closed power switch 12, regulate the output voltage of alternation high voltage source 1, the average field intensity that makes 4 in active carbon and electrion medium is 5-200kV/cm, form stable corona discharge, streamer-discahrge or glow discharge between active carbon and electrion medium 4 or high-field electrode 3, be 5-300min discharge time.
In the 3rd step, after discharge finished, cut-off switch 12 and alternation high voltage source 1 were opened reactor 2, took out active carbon.
In second step, when pending active carbon moisture content, be moisture content quality and quality of activated carbon ratio, during for 2-100%, need first booster air pump 10, air-blowing in reactor 2, turn on the power switch 12 then, regulate the output voltage of alternation high voltage source 1, the average field intensity scope that makes 4 in active carbon and electrion medium is 5-200kV/cm, forms stable corona discharge, streamer-discahrge or glow discharge between active carbon and electrion medium 4 or high-field electrode 3.
Medium blocking discharging plasma active carbon in-situ regeneration of the present invention is to adopt the method for dielectric barrier discharge to carry out, and the device that is adopted mainly is made of alternation high voltage source 1, reactor 2 and auxiliary equipment.
Alternation high voltage source 1 is meant the power supply that positive-negative polarity alternately changes, and the frequency range of power supply is 50HZ-10MHZ, and voltage range is that 0-500kV, power bracket are 0-100kW.
According to the processed in units amount of activated carbon, implement above-mentioned monomer reaction device structure in parallel or the series connection placement during application.
The technology of auxiliary equipment when using is determined.Comprising giving control devices such as the supporting protective resistance 11 of power supply, switch 12; When if pending active carbon moisture content is 2%-100%, in order to allow in the reactor water vapour in time discharge and avoid temperature of reactor to raise, produce a large amount of ozone simultaneously, need in reactor, inject air, therefore also need to be equipped with the condenser 14 and the cooling element of flowmeter 9, air pump 10, check valve 13, water vapour recovery in the device.Gas is squeezed into by air pump 10, through gas flowmeter 9, discharge by the active carbon filler bed in the reactor 25 then, pass through check valve 13 and condenser 14 again, make water vapor condensation enter conical flask 15, because tail gas contains ozone isoreactivity material, tail gas can be re-injected in the reactor, can reach the raising regeneration effect like this, simultaneously, do not need to handle the device of tail gas again, do not produce two pollutions.
Dielectric barrier discharge high-field electrode 3 in this device and low-field electrode (6) parallel metal sheet for being parallel to each other, and with relative dielectric constant ε
rBe the insulating materials of 1-100, as simple glass, quartz glass, mica or pottery etc., be electrion medium 4 and low pressure discharge medium 18, discharge medium 4 and 18 is dull and stereotyped.
In the medium blocking discharging plasma active carbon in-situ regeneration reactor 2 of the present invention, high-field electrode 3, low-field electrode 6, electrion medium 4 and low pressure discharge medium 18 can be placed by following three kinds of schemes.
The a scheme: high-field electrode 3 is fixed on reactor 2 tops, and low-field electrode 6 is fixed on reactor 2 bottoms; Electrion medium 4 is installed in electrode plate with high voltage 3 times; Active carbon filler bed 5 places on the low tension pole plate 6.
In regenerative process, when pending active carbon water content was 2%-100%, the mode that gas enters reactor 2 was, after gas enters reactor 2 from gas access 7, be parallel to electrion medium 3 and low-field electrode 6 by active-carbon bed 5, last gas goes out from gas vent 8.
The b scheme: high-field electrode 3 is fixed on reactor 2 tops, and low-field electrode 6 is fixed on reactor 2 bottoms; High-field electrode 3 and low-field electrode 6 are installed electrion medium 4 and low pressure discharge medium 18 respectively; Active carbon filler bed 5 places on the low pressure discharge medium 18.
In regenerative process, when pending active carbon water content was 2%-100%, the mode that gas enters reactor 2 was, after gas enters reactor 2 from gas access 7, be parallel to electrion medium 4 and low pressure discharge medium 18 by active-carbon bed 5, last gas goes out from gas vent 8.
The c scheme: high-field electrode 3 is fixed on reactor 2 tops, and low-field electrode 6 is fixed on reactor 2 bottoms; Low pressure discharge medium 18 is fixed on the space between high-field electrode 3 and the low-field electrode 6; All can be on low-field electrode 6 and the low pressure discharge medium 18 by the property let live carbon filling material bed 5.
In regenerative process, when pending active carbon water content is 2%-100%, uniform processing has passage 19 on high-field electrode 3 and the low-field electrode 6, the mode that gas enters reactor 2 is, after gas enters reactor 2 from gas access 7, passage 19 through low-field electrode 6 passes through active carbon filler bed 5, and then by the passage 19 on the high-field electrode 3, last gas goes out from gas vent 8.In addition, the left side of reactor 2 and the right can be provided with gas access 7 and gas vent 8, and the mode that gas enters reactor 2 is, after gas enters reactor 2 from gas access 7, be parallel to low pressure discharge medium 18 and low-field electrode 6 by active-carbon bed 5, last gas goes out from gas vent 8.
The gas that blasts in reactor 2 is air, O
2, N
2, O
3With gases such as Ar, wherein, air is 0-100%, O
2Be 0-100%, N
2Be 0-100%, O
3Be 0-100%, Ar is 0-100%.
Not only can regenerate and activate for medium blocking discharging plasma active carbon renovation process described in the present invention and device active carbon, and to molecular sieve, silica gel, activated alumina, the also renewable activation of adsorbent material such as copper-loaded.In active carbon, can add TiO in addition
2, Al
2O
3Improving regeneration and activation efficiency, catalyst quality and quality of activated carbon are than being 0-0.2 Deng catalyst or Ag, Au, metallic catalysts such as Pb, Mn.
Can design and produce into coaxial tubular type structural shape for the dielectric barrier discharge plasma regenerating unit described in the present invention, this moment, high-field electrode and low-field electrode were the coaxial metal cylinder, and electrion medium and low pressure discharge medium are relative dielectric constant ε
rInsulating materials cylinder for 1-100.
About determining of medium blocking discharging plasma active carbon in-situ regeneration device operational factor, must be noted that the problem of the following aspects:
A. pending active carbon can produce a large amount of high activity species for example OH, O, H free radical in the process of discharge when containing a certain amount of humidity, help the degraded of adsorbate.This external electrode also is difficult for puncturing, and active carbon also is difficult for charing.
B. the active carbon in the active carbon filler bed keeps smooth, otherwise, the inhomogeneous or local arc discharge of may discharging, even the guiding discharge medium is destroyed.
C. slowly regulate the high voltage source output voltage,, form stable corona discharge, streamer-discahrge and glow discharge between electrode and the medium or between medium and the medium.
When d. needing to feed gas in reactor, the gas wind speed in the reactor can not be too big, otherwise the high activity species of discharge generation do not act on active carbon and just taken out of reactor, are unfavorable for the regeneration of active carbon, and the waste energy.
E. in order to prevent the border discharge effect, the discharge medium area should be bigger than the area of high-pressure polar plate and low pressure pole plate.
F. in the output voltage adjustment process of alternation high voltage source, the assurance dielectric material can bear and the unlikely voltage output that is destroyed.
When adopting the device of medium blocking discharging plasma active carbon in situ regeneration method of the present invention, points for attention:
(1) correctness and the security of inspection electric power system.
(2) to guarantee the air-tightness of reactor, the leakage of tail gas such as control ozone.
Beneficial effect and benefit that the present invention reached are, a kind of new electrotechnics-dielectric barrier discharge plasma technique that fast development is in recent years got up combines with the chemical adsorbing separation engineering, is applied in the in-situ regeneration of adsorbents such as active carbon, molecular sieve, silica gel.Advantages such as this method has the regeneration efficiency height, and the recovery time is short, and non-secondary pollution need not carry out subsequent treatment, and the active carbon loss is few, and equipment is simple to operation.
Description of drawings
The present invention is further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is a medium blocking discharging plasma active carbon in-situ regeneration installation drawing of the present invention.
Fig. 2 is sparking electrode and a discharge medium placement a conceptual scheme in the reactor of the present invention.
Fig. 3 is sparking electrode and a discharge medium placement b conceptual scheme in the reactor of the present invention.
Fig. 4 is sparking electrode and a discharge medium placement c conceptual scheme in the reactor of the present invention.
Among the figure: 1. alternation high voltage source, 2. reactor, 3. high-field electrode, 4. electrion medium; 5. active carbon filler bed, 6. low-field electrode, 7. gas access; 8. gas vent, 9. gas flowmeter, 10. air pump; 11. protective resistance, 12. switches, 13. check valves; 14. condenser, 15. conical flasks, 16. high pressure conductor wires; 17. the low pressure conductor wire, 18. low pressure discharge media, 19. passages.
The specific embodiment
The device that is adopted in this example as shown in Figure 1, the frequency of alternation high voltage source 1 is 50HZ, the voltage effective value scope is 0-50kV, rated power 1kW.Shell of reactor is made by lucite, is shaped as the cuboid of 400mm * 450mm * 120mm.Sparking electrode of this example and discharge medium are placed the scheme of selecting Fig. 2 for use, high-field electrode 3 is the corrosion resistant plate of 200mm * 200mm * 4mm, low-field electrode 6 is the corrosion resistant plate of 350mm * 400mm * 4mm, the quartz glass plate of 300mm * 300mm * 2mm is as electrion medium 4, two battery lead plates distance is 22mm, contains the discharge medium of 2mm; Feeding gas is air; Used active carbon is the column coal mass active carbon, and diameter is 3mm, and average length is 10mm, and it is 9mm that active carbon is loaded thickness, and the moisture content for the treatment of regenerated carbon is 16%; Use auxiliary equipment such as gas flowmeter 9, air pump 10, protective resistance 11, power switch 12, check valve 13, condenser 14 and conical flask 15 in addition in this example.
In this example, choose commercially available chemical pure acid orange AO7 pressed powder and be made into the simulated wastewater that concentration is 1000mg/L, adopt the medium blocking discharging plasma active carbon in-situ regeneration device among the present invention, carry out the test of medium blocking discharging plasma active carbon in-situ regeneration, step is:
The first step, absorption accurately takes by weighing through pretreated column-shaped active carbon 250.0g, puts into the acid orange solution of 500mL volume 1000mg/L concentration, and absorption 48h reaches capacity active carbon.
Second step, electric discharge reactivating, regeneration technology is:
At first, will contain the saturated charcoal of the absorption that is equivalent to the new charcoal of 250.0g and be divided into 2 parts, a copy of it will be filled in the active carbon filler bed 5 in the reactor 2 closed reactor.
Secondly, booster air pump 10 is regulated flowmeter 9, makes air flow control at 0.5m
3/ h, closed power switch 12, start alternation high voltage source 1, the conciliation supply frequency is 50HZ, voltage effective value is 30kV, and this moment, power output was 100W, and the average field-strength between active carbon and the electrion medium is 15kV/cm, form stable streamer-discahrge state between the electrode, the electric discharge reactivating time is 120min.
At last, cut-off switch 12 and alternation high voltage source 1 stop air pump 10, open reactor 2, take out active carbon.
The 3rd step, regeneration effect detects, accurately take by weighing the new charcoal of 125.0g,, survey the absorbance of an acid orange every 15min with the acid orange waste water of the electric discharge reactivating charcoal that contains the new active carbon that equal in quality do not adsorb, saturated charcoal and new charcoal absorption 150mL volume, 100mg/L concentration.Detect the adsorption capacity of finding through the active carbon after the dielectric barrier discharge regeneration and obviously be better than new charcoal.Through after the absorption of 60min, decolorizing effect reaches 53%, and after the absorption of 60min of new charcoal process, decolorizing effect is 26%.The absorbance of saturated charcoal remains unchanged substantially.To the active carbon after the dielectric barrier discharge plasma regeneration, calculate through the saturated back of 48h absorption, compare with new charcoal, regeneration efficiency can reach 120%, the adsorption capacity that shows the active carbon after regeneration is handled is the adsorption capacity 120% of new charcoal, and the active carbon loss late is less than 0.1%.Because ozone is recycling, does not cause secondary pollution, and the active carbon after the regeneration need not subsequent treatment.After 3 regeneration, the adsorption capacity of active carbon is still suitable with new charcoal.
In order to verify whether discharge has improved the activity of active carbon, carried out following test again.Accurately take by weighing the new charcoal of 200.0g, be divided into 2 parts, a copy of it is carried out discharge process 30min, compare with the new charcoal of another part then, find that relatively the adsorption capacity of the active carbon after the discharge process is better than new charcoal.Through after the absorption of 60min, the absorbance of the active carbon after the discharge process reduces to 0.980 by 2.984, and after the absorption of 60min of new charcoal process, absorbance reduces to 1.407 by 2.984.This explanation not only can recover the adsorption capacity of active carbon by discharge, and can also improve the activity of active carbon.
Claims (15)
1. medium blocking discharging plasma active carbon in-situ regeneration device is characterized in that, is made of alternation high voltage source (1) and reactor (2); The power supply that alternation high voltage source (1) alternately changes for positive-negative polarity, frequency range is that 50HZ-10MHZ, voltage range are that 0-500kV, power bracket are 0-100kW; Reactor (2) is made of high-field electrode (3), low-field electrode (6), electrion medium (4), low pressure discharge medium (18), active carbon filler bed (5), high pressure conductor wire (16) and low pressure conductor wire (17); High-field electrode (3) is fixed on reactor (2) top, low-field electrode (6) is fixed on reactor (2) bottom, active carbon filler bed (5) places on the low tension pole plate (6), the high-voltage output end of alternation high voltage source (1) is connected on the high-field electrode (3) of reactor (2), low-voltage output is connected on the low-field electrode (6) of reactor (2), and is connected with earth connection; Distance is 2.5-300mm between high-field electrode (3) and the low-field electrode (6), and the area of high-field electrode (3) and low-field electrode (6) is 1cm
2-90m
2
2. medium blocking discharging plasma active carbon in-situ regeneration device according to claim 1, it is characterized in that, reactor (2) left and right sides correspondence is provided with gas access (7) and gas vent (8), gas access (7) is connected with air pump (10) through flowmeter (9), and gas vent (8) is connected with condenser (14) through check valve (13).
3. medium blocking discharging plasma active carbon in-situ regeneration device according to claim 1 and 2 is characterized in that, is fixed with electrion medium (4) below electrode plate with high voltage (3), and active carbon filler bed (5) places on the low-field electrode (6); Electrion medium (4) thickness is 0.5mm-50mm, and area is 20cm
2-100m
2
4. medium blocking discharging plasma active carbon in-situ regeneration device according to claim 1 and 2, it is characterized in that, below electrode plate with high voltage (3), be fixed with electrion medium (4), be fixed with low pressure discharge medium (18) above the low-field electrode (6), active carbon filler bed (5) places on the low pressure discharge medium (18), electrion medium (4) and low pressure discharge medium (18) thickness are 0.5mm-50mm, and area is 20cm
2-100m
2
5. medium blocking discharging plasma active carbon in-situ regeneration device according to claim 1 and 2, it is characterized in that, between high-field electrode (3) and low-field electrode (6), be fixed with low pressure discharge medium (18), low-field electrode (6) and be provided with active carbon filler bed (5) above the low pressure discharge medium (18), low pressure discharge medium (18) thickness is 0.5mm-50mm, and area is 20cm
2-100m
2
6. medium blocking discharging plasma active carbon in-situ regeneration device according to claim 1, it is characterized in that, between high-field electrode (3) and low-field electrode (6), be fixed with low pressure discharge medium (18), low-field electrode (6) and be provided with active carbon filler bed (5) above the low pressure discharge medium (18); High-field electrode (3) and low-field electrode (6) are provided with passage (19), also comprise gas access (7), gas vent (8), flowmeter (9), air pump (10), check valve (13) and condenser (14) in the device, reactor (2) both sides correspondence up and down is provided with gas access (7) and gas vent (8), gas access (7) is connected with air pump (10) through flowmeter (9), gas vent (8) is connected with condenser (14) through check valve (13), low pressure discharge medium (18) thickness is 0.5mm-50mm, and area is 20cm
2-100m
2
7. use claim 1 or 2 described medium blocking discharging plasma active carbon in-situ regeneration devices to carry out the method for active carbon regeneration, it is characterized in that processing step is:
The first step is filled in pending active carbon in the active carbon filler bed (5) in the reactor (2), closed reactor (2), and the filling thickness of active carbon is 1-200mm;
Second step, turn on the power switch (12), regulate the output voltage range 0-500kV of alternation high voltage source (1), making the average field intensity scope between active carbon and high-field electrode (3) is 5-200kV/cm, form discharge between active carbon and high-field electrode (3), be 5-300min discharge time;
In the 3rd step, then, cut-off switch (12) is closed alternation high voltage source (1), opens reactor (2), takes out active carbon.
8. medium blocking discharging plasma active carbon in situ regeneration method according to claim 7, it is characterized in that, in second step, when pending active carbon moisture content scope is 2%-100%, need first booster air pump (10), air-blowing in reactor (2), flow velocity is 1-100cm/s, turn on the power switch (12) then, regulate the output voltage of alternation high voltage source (1), between active carbon and electrion medium (4), form discharge; The gas that blasts in reactor (2) is air, O
2, N
2And O
3, wherein, air is 0-100%, O
2Be 0-100%, N
2Be 0-100%, O
3Be 0-100%; In the 3rd step, cut-off switch (12) is closed alternation high voltage source (1), stops air pump (10), opens reactor (2), takes out active carbon.
9. medium blocking discharging plasma active carbon in situ regeneration method according to claim 7 is characterized in that, when pending active carbon was granular, the particle size range of granular active carbon was 1-50mm.
10. medium blocking discharging plasma active carbon in situ regeneration method according to claim 7 is characterized in that, when pending active carbon was column, the diameter range of column-shaped active carbon was 1-50mm, and length range is 2-100mm.
11. medium blocking discharging plasma active carbon in situ regeneration method according to claim 7 is characterized in that, has dosed TiO in the pending active carbon
2, Al
2O
3Catalyst or precious metals ag, Au, Pb, Mn catalyst, catalyst is 0-0.2 with the quality of activated carbon ratio.
12. according to claim 7,8,9,10 or 11 described medium blocking discharging plasma active carbon in situ regeneration method, it is characterized in that, below electrode plate with high voltage (3), be fixed with relative dielectric constant ε
rElectrion medium (4) for 1-100, active carbon filler bed (5) places on the low-field electrode (6), the first step, pending active carbon is filled in the active carbon filler bed (5) in the reactor (2), closed reactor (2), the filling thickness of active carbon is 1-200mm, second step, turn on the power switch (12), regulate the output voltage range 0-500kV of alternation high voltage source (1), making the average field intensity scope between active carbon and electrion medium (4) is 5-200kV/cm, between active carbon and electrion medium (4), form discharge, be 5-300min discharge time, the 3rd step, then, cut-off switch (12), close alternation high voltage source (1), open reactor (2), take out active carbon.
13. according to claim 7,8,9,10 or 11 described medium blocking discharging plasma active carbon in situ regeneration method, it is characterized in that, below electrode plate with high voltage (3), be fixed with relative dielectric constant ε
rBe the electrion medium (4) of 1-100, low-field electrode is fixed with relative dielectric constant ε above (6)
rLow pressure discharge medium (18) for 1-100, active carbon filler bed (5) places on the low pressure discharge medium (18), the first step, pending active carbon is filled in the active carbon filler bed (5) in the reactor (2), closed reactor (2), the filling thickness of active carbon is 1-200mm, second step, turn on the power switch (12), regulate the output voltage range 0-500kV of alternation high voltage source (1), making the average field intensity scope between active carbon and electrion medium (4) is 5-200kV/cm, between active carbon and electrion medium (4), form discharge, be 5-300min discharge time, the 3rd step, then, cut-off switch (12), close alternation high voltage source (1), open reactor (2), take out active carbon.
14. according to claim 7,8,9,10 or 11 described medium blocking discharging plasma active carbon in situ regeneration method, it is characterized in that, between high-field electrode (3) and low-field electrode (6), be fixed with relative dielectric constant ε
rLow pressure discharge medium (18) for 1-100, low-field electrode (6) and be provided with active carbon filler bed (5) above the low pressure discharge medium (18), the first step, pending active carbon is filled in the active carbon filler bed (5) in the reactor (2), closed reactor (2), the filling thickness of active carbon is 1-200mm, second step, turn on the power switch (12), regulate the output voltage range 0-500kV of alternation high voltage source (1), average field intensity scope between active carbon and low pressure discharge medium (18) is 5-200kV/cm, and the average field intensity scope between active carbon and high-field electrode (3) is 5-200kV/cm, forms discharge between active carbon and low pressure discharge medium (18), between active carbon and high-field electrode (3), form discharge, be 5-300min discharge time, the 3rd step, then, cut-off switch (12), close alternation high voltage source (1), open reactor (2), take out active carbon.
15. use claim 1 or 2 described medium blocking discharging plasma active carbon in-situ regeneration devices to carry out the method for active carbon regeneration, it is characterized in that, can be used in the regeneration of active carbon, molecular sieve, silica gel, activated alumina or copper-loaded adsorbent material.
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