CN111298741A - Plasma liquid phase treatment device and method for fly ash - Google Patents
Plasma liquid phase treatment device and method for fly ash Download PDFInfo
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- CN111298741A CN111298741A CN202010124687.5A CN202010124687A CN111298741A CN 111298741 A CN111298741 A CN 111298741A CN 202010124687 A CN202010124687 A CN 202010124687A CN 111298741 A CN111298741 A CN 111298741A
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- 239000010881 fly ash Substances 0.000 title claims abstract description 93
- 239000007791 liquid phase Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 239000012212 insulator Substances 0.000 claims description 6
- 238000010525 oxidative degradation reaction Methods 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 7
- 230000015556 catabolic process Effects 0.000 abstract description 6
- 238000006731 degradation reaction Methods 0.000 abstract description 6
- 231100000419 toxicity Toxicity 0.000 abstract description 4
- 230000001988 toxicity Effects 0.000 abstract description 4
- 230000003321 amplification Effects 0.000 abstract description 3
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 3
- 239000012159 carrier gas Substances 0.000 abstract description 2
- 238000011268 retreatment Methods 0.000 abstract description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 11
- 239000000126 substance Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 239000012071 phase Substances 0.000 description 7
- 238000004056 waste incineration Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 230000023556 desulfurization Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000003795 desorption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000010791 domestic waste Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
- B01J19/087—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy
- B01J19/088—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor employing electric or magnetic energy giving rise to electric discharges
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing Of Solid Wastes (AREA)
- Plasma Technology (AREA)
Abstract
The invention relates to the field of garbage fly ash treatment, and discloses a plasma liquid phase treatment device for fly ash, which comprises a high-voltage power supply and a reactor, wherein the reactor comprises a shell, and a pin electrode and a plate electrode which are arranged in the shell; the needle electrode comprises an electrode plate and a conical electrode, and the top of the conical electrode faces the electrode plate; the device has simple structure, low operation energy consumption and easy power amplification. The method for treating fly ash by using the device comprises the following steps: under a high-voltage power supply, strong streamer discharge can be formed between the conical electrode and the liquid level, and the streamer discharge also occurs to bubbles generated by carrier gas in a liquid phase, so that low-temperature plasma is generated and enters the liquid through the liquid level or the bubbles to be broken to be contacted with fly ash in the liquid, thereby realizing the degradation treatment of the fly ash. The device of the invention is used for treating the fly ash, so that the toxicity of the treated fly ash and the leachate can be effectively reduced, and the problems of pretreatment and retreatment of the fly ash are avoided.
Description
Technical Field
The invention relates to the field of garbage fly ash treatment, in particular to a plasma liquid phase treatment device and method for fly ash.
Background
With social development, people generate a large amount of domestic garbage in daily life, which poses a serious threat to the ecological environment and becomes an important factor restricting the sustainable development of the society. The waste incineration technology has the advantages of remarkable reduction effect, land saving and the like, and realizes resource recycling through waste incineration power generation, so the waste incineration technology becomes one of the main treatment means of urban waste at present.
The garbage contains a large amount of chemical substances such as sodium chloride, potassium chloride and the like, and organic substances such as petroleum products, chlorine-containing plastics and the like, so that persistent organic pollutants such as dioxin and the like can be generated in the incineration process, and are enriched on the surface of fly ash generated in the garbage incineration along with the dust removal process. Thus, the Standard for controlling pollutants for incineration of municipal waste (GB18485-2014) states: the household garbage fly ash is managed according to dangerous waste. National hazardous waste records clearly stipulate that fly ash from domestic waste incineration is hazardous waste and must be subjected to harmless and stabilizing treatment.
At present, the fly ash from waste incineration mainly comprises treatment means such as chemical treatment of chelating agents, cement solidification treatment, high-temperature melting treatment and the like, the chemical treatment of the chelating agents is simple and easy to implement and has small capacity increase, but the fly ash from waste incineration has complex quality and is difficult to treat harmful substances of the whole fly ash; the cement curing treatment cost is low, the stability is high, but the problem that land resources are occupied after curing and compatibilization is faced; the dioxin substances can be efficiently decomposed in the high-temperature melting process, the solidification effect of the treated heavy metal elements is stable, but the treatment technology cost and the operation energy consumption of the high-temperature melting fly ash are high, the electric energy utilization rate is low, the quality requirement on the fly ash generated by burning the garbage is high, the refractory fly ash needs to be pretreated in the early stage, and the secondary fly ash is easily generated in the treatment process and needs to be reprocessed.
CN 109848175A discloses a method for removing mercury and dioxin in household garbage incineration fly ash, which comprises a desorption device, a discharge hopper, a primary heat exchanger, a secondary heat exchanger, plasma purification equipment and a mercury recovery device. The gas-phase outlet of the desorption device is connected with the heat source inlet of the primary heat exchanger through a fan, the heat source outlet of the primary heat exchanger is connected with the heat source inlet of the secondary heat exchanger, the heat source outlet of the secondary heat exchanger is connected with the mercury recovery device and then connected with the plasma purification equipment, the cold source inlet of the heat exchanger is connected with a cooling medium, and the solid-phase outlet of the desorption device is connected with the discharge hopper. The method is operated at normal temperature and normal pressure, fly ash needs to be pretreated, the device is complex, and the operation energy consumption is high.
Disclosure of Invention
The invention utilizes plasma to generate streamer discharge on the liquid surface, strengthens the in-situ strong oxidative degradation of dioxin substances in the fly ash by high-energy free radicals of the plasma, effectively reduces the toxicity of the treated fly ash and leachate, simultaneously reduces the operation energy consumption of the device and improves the fly ash treatment efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that:
a plasma liquid phase treatment device for fly ash comprises a high voltage power supply and a reactor, wherein the reactor comprises a shell, a needle electrode and a plate electrode which are arranged in the shell; the pin electrode is connected with the top of the shell through an insulator, the plate electrode is fixedly attached to the bottom of the shell, and a fly ash treatment cavity is formed between the pin electrode and the plate electrode;
the needle electrode comprises an electrode plate and a plurality of conical electrodes distributed on the electrode plate, and the top of each conical electrode faces the plate electrode;
the high-voltage end of the high-voltage power supply is connected with the needle electrode, and the low-voltage end of the high-voltage power supply is connected with the plate electrode.
Before the device operates, the shell is opened, the fly ash to be treated is placed in the fly ash treatment cavity, liquid is injected, a space is reserved between the liquid level and the conical electrode, and under the action of a high-voltage power supply, plasma is generated between the needle electrode and the plate electrode, so that the fly ash in a liquid phase is subjected to strong oxidative degradation, and the toxicity of fly ash leachate is reduced; and streamer discharge can occur on the liquid surface, the plasma is fully contacted with the fly ash on the liquid surface, the oxidative degradation strength of dioxin substances enriched on the surface of the fly ash is increased, and the harmless treatment of the fly ash is realized.
The added liquid can be water or desulfurization waste liquid generated by a wet desulfurization system.
The power supply mode of the high-voltage power supply comprises a pulse power supply, an alternating current power supply, a direct current superposed pulse power supply and a direct current superposed alternating current power supply.
Preferably, the lower part of the shell is provided with an air inlet, the upper part of the shell is provided with an air outlet, and the air inlet is used for introducing air into the fly ash treatment cavity, so that bubbling is generated in a liquid phase, dense plasma liquid is generated in bubbles and the liquid level of the bubbles, the fly ash treatment efficiency is improved, and meanwhile, the stirring effect is achieved, so that the liquid and the fly ash are uniformly mixed.
The electrode plate is circular, and the electrode plate with the circular structure is beneficial to uniform discharge of the needle electrode.
In order to further improve the uniformity of discharge, when the electrode plate is circular, the electrode plate is superposed with the central line of the plate electrode, and the injection energy of plasma can be improved after the superposition, which is beneficial to the degradation of dioxin.
Since the discharge is affected by the shortest distance from the electrode needle to the plate electrode and the tip radius of the electrode needle. If the electrode needles are different in length, the discharge only occurs between the longest discharge needle and the plate electrode, and if the electrode needles are different in thickness, the discharge only occurs between the thinnest discharge needle and the plate electrode, so that the conical electrodes are equal in size and are uniformly distributed on the electrode plates, and the uniform discharge of the needle electrodes can be ensured.
The area of the plate electrode is the same as that of the bottom of the shell, so that the fly ash in the fly ash treatment cavity can be fully contacted with the plate electrode, all the fly ash in the fly ash treatment cavity is covered by the discharge area, and the fly ash treatment efficiency can be effectively improved.
The shell is made of insulating materials; the pin electrode and the plate electrode are made of metal conductive materials; the insulator is made of polytetrafluoroethylene materials.
The flying ash plasma liquid phase treatment device provided by the invention can be used as a unit to carry out multi-unit parallel amplification.
The invention also provides a plasma liquid phase treatment method of the fly ash, which utilizes the plasma liquid phase treatment device to treat the fly ash and comprises the following steps:
(1) opening the shell, placing the fly ash to be treated in the fly ash treatment cavity, injecting liquid into the fly ash treatment cavity, and closing the shell, wherein a space is reserved between the liquid level and the conical electrode;
(2) and opening the high-voltage power switch, and generating plasma between the needle electrode and the plate electrode to carry out strong oxidative degradation on the fly ash in the liquid phase.
In order to improve the treatment efficiency of the fly ash, an air inlet hole is arranged at the lower part of the shell, an air outlet hole is arranged at the upper part of the shell, air is introduced from the air inlet hole, bubbling is generated in a liquid phase, dense plasma liquid is generated in bubbles and the liquid level of the bubbles, the treatment efficiency of the fly ash is improved, and meanwhile, the stirring effect is achieved, so that the liquid and the fly ash are uniformly mixed.
The injected liquid can be water, and can also be replaced by other liquids, such as desulfurization waste water of a wet desulfurization system, so that the method is more environment-friendly.
The gas is air, oxygen, carbon dioxide or a mixture thereof. The flow rate of the gas is 2-6L/min, and if the flow rate of the gas is too low, the quantity of generated bubbles is small, mass transfer of low-temperature plasma into liquid is not facilitated, and if the flow rate is too high, the liquid level is very unstable, so that pyro-discharge is easily caused. Preferably, the optimal gas flow rate is controlled at 4L/min.
The distance between the liquid level and the top of the conical electrode is at least 1 cm. When the power is on, the conical electrode discharges electricity in a gas phase to generate low-temperature plasma, then mass transfer is carried out between a gas phase and a liquid phase, so that the low-temperature plasma enters the liquid phase to be contacted with fly ash, and dioxin molecules in the fly ash are oxidized and degraded, therefore, the needle tip of the conical discharge electrode must keep a certain distance from the liquid surface.
The power supply mode of the high-voltage power supply comprises a pulse power supply, an alternating current power supply, a direct current superposed pulse power supply, a direct current superposed alternating current power supply and the like. The power supply mode can be independently selected according to the requirements of fly ash treatment capacity and treatment efficiency.
When the power supply mode of the high-voltage power supply is a pulse power supply, the peak voltage of the pulse power supply is 10-40kV, and the frequency is 1-10 kHz; when the power supply mode of the high-voltage power supply is an alternating-current power supply, the peak voltage of the alternating-current power supply is 10-40kV, and the frequency is 1-2000 Hz; when the power supply mode of the high-voltage power supply is a direct-current superimposed pulse power supply, the base voltage of the direct-current power supply is 30-120kV, the frequency is 50-300Hz, the peak voltage of the pulse power supply is 10-40kV, and the pulse frequency is 1-10 kHz; when the power supply mode of the high-voltage power supply is a direct-current superposed alternating-current power supply, the base voltage of the direct-current power supply is 30-120kV, the frequency is 50-300Hz, the peak voltage of the alternating-current power supply is 10-40kV, and the frequency is 1-2000 Hz.
Preferably, the power supply mode of the high-voltage power supply is a pulse power supply, and for a single power supply mode, streamer discharge energy generated by the pulse power supply mode is the highest, the degradation efficiency of dioxin is the highest, and meanwhile, the energy consumption is the largest;
after the device works, strong streamer discharge can be formed between the conical electrode needle on the plate electrode and the liquid level to generate low-temperature plasma, and simultaneously, along with the introduction of carrier gas, a large amount of bubbles can be formed in the liquid in the fly ash treatment cavity, and the existence of the bubbles can promote the generation of streamer discharge and enhance the streamer discharge intensity. The low-temperature plasma generated by the streamer discharge enters the liquid through the liquid level or the broken bubbles, contacts with the fly ash in the liquid and reacts with molecules such as dioxin in the fly ash, and the degradation treatment of the fly ash is realized.
Compared with the prior art, the invention has the following beneficial effects:
(1) the plasma liquid phase treatment method of the invention utilizes a high voltage power supply to generate plasma in the fly ash treatment cavity, carries out oxidation degradation treatment on the fly ash liquid mixture in the cavity, blows gas, generates streamer discharge at the liquid level of the water phase, simultaneously enriches high density plasma in the bubbles and the liquid level of the bubbles, carries out strong oxidation degradation treatment on the fly ash in the liquid level of the water phase, the liquid level of the bubbles and the bubbles, improves the utilization rate of electric energy, and realizes the high-efficiency non-toxic treatment of the fly ash.
(2) The method for treating the fly ash does not need to pretreat the fly ash in the earlier stage, avoids the problem of retreatment of the fly ash, has simple treatment process and is suitable for industrial amplification.
(3) The plasma liquid phase treatment device has the advantages of simple structure, high fly ash treatment efficiency, low operation energy consumption, safety and reliability.
Drawings
FIG. 1 is a schematic view of a fly ash plasma liquid phase treatment apparatus according to the present invention.
The fly ash treatment device comprises a high-voltage power supply 1, a high-voltage end 11, a low-voltage end 12, a shell 2, a pin electrode 3, an electrode plate 31, a conical electrode 32, a plate electrode 4, a fly ash treatment cavity 5, an air inlet 6, an air outlet 7 and an insulator 8.
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 with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Those skilled in the art should understand that they can make modifications and equivalents without departing from the spirit and scope of the present invention, and all such modifications and equivalents are intended to be included within the scope of the present invention.
Example 1
The plasma liquid phase treatment device of the fly ash is shown in figure 1, and comprises a high-voltage power supply 1 and a reactor; the reactor is cylindrical and comprises a shell 2, a needle electrode 3 and a plate electrode 4 which are arranged in the shell 2, wherein the lower part of the shell 2 is provided with an air inlet 6, the upper part of the shell 2 is provided with an air outlet 7, the needle electrode 3 comprises a circular plate electrode 31, and conical electrodes 32 with equal size are uniformly distributed on the plate electrode 31;
the needle electrode 3 is connected with the top of the shell 2 through the insulator 8, the plate electrode 4 is the same as the bottom area of the shell 2 and is fixedly attached to the bottom area of the shell, the electrode plate 31 in the needle electrode 3 is superposed with the plate electrode 4 and the central lines of the top and the bottom of the shell 2, and a fly ash treatment cavity 5 is formed between the needle electrode 3 and the plate electrode 4.
The shell 2 is made of polytetrafluoroethylene material; the needle electrode 3 and the plate electrode 4 are made of metal conductive material stainless steel; the insulator 8 is made of polytetrafluoroethylene.
The high-voltage end 11 of the high-voltage power supply 1 is connected with the needle electrode 3, the low-voltage end 12 is connected with the plate electrode 4 and is grounded, and the fly ash treatment process during work comprises the following steps:
(1) opening the shell 2, placing 1000g of fly ash to be treated in the fly ash treatment cavity 5, injecting water into the fly ash treatment cavity 5, stopping injecting water when the distance between the liquid level of the water phase and the top of the conical electrode 32 is 2cm, and closing the shell 2;
(2) air is introduced into the fly ash treatment cavity 5 from the air inlet 6, the flow rate is 4L/min, bubbles are generated in the water phase, and the air is discharged from the air outlet 7; and the high-voltage power supply 1 is connected, a pulse power supply superposed direct-current power supply is adopted by the high-voltage power supply 1, the peak voltage of the pulse power supply runs at 40kV, the frequency is 4kHz, the voltage of the direct-current power supply runs at 80kV, and the fly ash treatment cavity 5 is subjected to strong oxidative degradation for 30 min.
And after the treatment is finished, stopping the power supply, standing for 5min, removing supernatant in the device, drying the fly ash with moisture, and testing the concentration of dioxin in the treated fly ash. The test shows that the energy efficiency of the power supply is more than or equal to 85 percent, the energy consumption is less than or equal to 150 kW.h/T, and the treatment efficiency of the dioxin total toxicity equivalent is more than or equal to 68 percent.
Claims (10)
1. A plasma liquid phase treatment device for fly ash comprises a high voltage power supply (1) and a reactor, and is characterized in that the reactor comprises a shell (2), a needle electrode (3) and a plate electrode (4) which are arranged in the shell (2); the pin electrode (3) is connected with the top of the shell (2) through an insulator (8), the plate electrode (4) is fixedly attached to the bottom of the shell (2), and a fly ash treatment cavity (5) is formed between the pin electrode (3) and the plate electrode (4);
the needle electrode (3) comprises an electrode plate (31) and a plurality of conical electrodes (32) distributed on the electrode plate (31), and the tops of the conical electrodes (32) face the plate electrode (4);
the high-voltage end (11) of the high-voltage power supply (1) is connected with the needle electrode (3), and the low-voltage end (12) of the high-voltage power supply (1) is connected with the plate electrode (4).
2. A plasma liquid phase processing device according to claim 1, characterized in that the lower part of the shell (2) is provided with an air inlet hole (6), and the upper part is provided with an air outlet hole (7).
3. A plasma liquid phase processing apparatus according to claim 1, characterized in that the electrode plate (31) is circular.
4. A plasma liquid phase treatment apparatus according to claim 3, characterized in that the electrode plate (31) coincides with the center line of the plate electrode (4).
5. A plasma liquid phase processing device according to claim 1 or 3, characterized in that the conical electrodes (32) are equal in size and are evenly distributed on the electrode plate (31).
6. Plasma liquid phase treatment apparatus according to claim 1, characterized in that the plate electrode (4) is the same area as the bottom of the housing (2).
7. A method for treating fly ash with plasma liquid phase, which is characterized in that the fly ash is treated by using the plasma device of any one of claims 1 to 6, comprising the following steps:
(1) opening the shell (2), placing the fly ash to be treated in the fly ash treatment cavity (5), injecting liquid into the fly ash treatment cavity (5), keeping a distance between the liquid level and the conical electrode (32), and closing the shell (2);
(2) and opening the switch of the high-voltage power supply (1), generating plasma between the needle electrode (3) and the plate electrode (4), and carrying out strong oxidative degradation on the fly ash in the liquid phase.
8. A method for plasma liquid phase treatment of fly ash according to claim 7, wherein in the step (2), gas is introduced through the gas inlet hole (7); the flow rate of the gas is 2-6L/min.
9. A method for plasma liquid phase treatment of fly ash according to claim 7 or 8, characterized in that the liquid level in the fly ash treatment chamber (5) is at least 1cm away from the top of the conical electrode (32).
10. A method for plasma liquid phase treatment of fly ash according to claim 7 or 8, wherein the high voltage power source (1) is supplied by a pulse power source, an AC power source, a superimposed DC pulse power source or a superimposed DC AC power source;
when the power supply mode of the high-voltage power supply (1) is a pulse power supply, the peak voltage of the pulse power supply is 10-40kV, and the frequency is 1-10 kHz; when the power supply mode of the high-voltage power supply (1) is an alternating-current power supply, the peak voltage of the alternating-current power supply is 10-40kV, and the frequency is 1-2000 Hz; when the power supply mode of the high-voltage power supply (1) is a direct-current superimposed pulse power supply, the base voltage of the direct-current power supply is 30-120kV, and the frequency is 50-300H; the peak voltage of the pulse power supply is 10-40kV, and the pulse frequency is 1-10 kHz; when the power supply mode of the high-voltage power supply (1) is a direct-current superposed alternating-current power supply, the base voltage of the direct-current power supply is 30-120kV, and the frequency is 50-300 Hz; the peak voltage of the alternating current power supply is 10-40kV, and the frequency is 1-2000 Hz.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114887565A (en) * | 2022-04-15 | 2022-08-12 | 浙江理工大学 | Liquid phase discharge device and application thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562445A (en) * | 2004-03-29 | 2005-01-12 | 广东杰特科技发展有限公司 | Method of synchronous cleansing air pollutant by smoke of plasma discharge caused by spreading light |
| CN1654316A (en) * | 2004-02-10 | 2005-08-17 | 广东杰特科技发展有限公司 | Flowing light discharge plasma oxygenized sulfite |
| CN201071317Y (en) * | 2007-07-11 | 2008-06-11 | 大连理工大学 | Corona discharge plasma body device for treatment of water |
| CN101822885A (en) * | 2010-04-13 | 2010-09-08 | 浙江大学 | Device and method for treating fly ash by utilizing cyclone sliding bevel low temperature plasma technology |
| CN102040265A (en) * | 2010-11-09 | 2011-05-04 | 浙江大学 | Method for sterilizing liquid by using along-surface resonant pulse discharge plasma |
| CN104623854A (en) * | 2014-12-23 | 2015-05-20 | 中山大学 | Method for treating incineration fly ash by using plasma fluidized bed |
| CN108246058A (en) * | 2017-11-08 | 2018-07-06 | 中国矿业大学(北京) | Mercury is removed before a kind of cement kiln synergic processing flying dust kiln He the purifier of bioxin |
| CN109848175A (en) * | 2019-02-22 | 2019-06-07 | 北京中洁蓝环保科技有限公司 | The removal methods of mercury and dioxin in a kind of domestic garbage incineration flyash |
| CN110317636A (en) * | 2019-07-29 | 2019-10-11 | 大连海事大学 | A kind of method and apparatus using discharge in water add in-place hydrogen upgrading heavy oil feedstock |
| CN212396707U (en) * | 2020-02-27 | 2021-01-26 | 浙江大学 | Plasma liquid phase processing device of fly ash |
-
2020
- 2020-02-27 CN CN202010124687.5A patent/CN111298741B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1654316A (en) * | 2004-02-10 | 2005-08-17 | 广东杰特科技发展有限公司 | Flowing light discharge plasma oxygenized sulfite |
| CN1562445A (en) * | 2004-03-29 | 2005-01-12 | 广东杰特科技发展有限公司 | Method of synchronous cleansing air pollutant by smoke of plasma discharge caused by spreading light |
| CN201071317Y (en) * | 2007-07-11 | 2008-06-11 | 大连理工大学 | Corona discharge plasma body device for treatment of water |
| CN101822885A (en) * | 2010-04-13 | 2010-09-08 | 浙江大学 | Device and method for treating fly ash by utilizing cyclone sliding bevel low temperature plasma technology |
| CN102040265A (en) * | 2010-11-09 | 2011-05-04 | 浙江大学 | Method for sterilizing liquid by using along-surface resonant pulse discharge plasma |
| CN104623854A (en) * | 2014-12-23 | 2015-05-20 | 中山大学 | Method for treating incineration fly ash by using plasma fluidized bed |
| CN108246058A (en) * | 2017-11-08 | 2018-07-06 | 中国矿业大学(北京) | Mercury is removed before a kind of cement kiln synergic processing flying dust kiln He the purifier of bioxin |
| CN109848175A (en) * | 2019-02-22 | 2019-06-07 | 北京中洁蓝环保科技有限公司 | The removal methods of mercury and dioxin in a kind of domestic garbage incineration flyash |
| CN110317636A (en) * | 2019-07-29 | 2019-10-11 | 大连海事大学 | A kind of method and apparatus using discharge in water add in-place hydrogen upgrading heavy oil feedstock |
| CN212396707U (en) * | 2020-02-27 | 2021-01-26 | 浙江大学 | Plasma liquid phase processing device of fly ash |
Non-Patent Citations (1)
| Title |
|---|
| 卢欢亮等: "等离子体熔融技术处理垃圾焚烧飞灰的中试研究", 《环境卫生工程》, vol. 25, no. 4, pages 51 - 57 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114887565A (en) * | 2022-04-15 | 2022-08-12 | 浙江理工大学 | Liquid phase discharge device and application thereof |
| CN114887565B (en) * | 2022-04-15 | 2024-01-12 | 浙江理工大学 | Liquid phase discharge device and application thereof |
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