CN108067174B - Plasma coupling hypergravity reactor device and application - Google Patents

Plasma coupling hypergravity reactor device and application Download PDF

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CN108067174B
CN108067174B CN201611022412.0A CN201611022412A CN108067174B CN 108067174 B CN108067174 B CN 108067174B CN 201611022412 A CN201611022412 A CN 201611022412A CN 108067174 B CN108067174 B CN 108067174B
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liquid
rotating
plasma
gas
stage
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CN108067174A (en
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初广文
蔡勇
罗勇
陈建峰
孙宝昌
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Beijing University of Chemical Technology
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/24—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/56—Nitrogen oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/818—Employing electrical discharges or the generation of a plasma
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/08—Processes employing the direct application of electric or wave energy, or particle radiation; Apparatus therefor
    • B01J2219/0894—Processes carried out in the presence of a plasma
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/02—Specific form of oxidant
    • C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical

Abstract

The invention discloses a plasma coupling hypergravity reactor device and application thereof, wherein a plasma field is coupled into a hypergravity rotating bed reactor or a hypergravity stator-rotor reactor, and the device comprises a motor, an insulation coupler, an electric slip ring, a boosting voltage regulator, a rotating cavity, a gas inlet, a gas outlet, a liquid inlet and a liquid outlet. The invention couples plasma into a hypergravity reactor, utilizes high-energy electrons and active groups generated by plasma discharge to oxidize, decompose and react waste gas and waste liquid, and simultaneously increases the collision frequency of gas or liquid with free radicals and high-energy electrons by virtue of a hypergravity revolving bed technology, improves the energy utilization efficiency of the plasma, thereby realizing the treatment of deeply removing nitrogen oxides and refractory components in waste water. The super-gravity rotating bed or the super-gravity stator and rotor technology has the advantages of small occupied area, small equipment volume, convenience in operation and the like, and is particularly suitable for upgrading and transforming factories with limited space.

Description

Plasma coupling hypergravity reactor device and application
Technical Field
The invention relates to the application field of deep removal of nitrogen oxides and treatment of refractory wastewater. And more particularly, to a plasma coupled hypergravity reactor apparatus and applications.
Background
Harmful substances such as sulfur oxides, nitrogen oxides and dust discharged by a thermal power plant cause serious atmospheric pollution; the waste water discharged from chemical plants contains refractory substances such as benzene rings, naphthalene rings, pyridine and other heterocycles, which cause serious water resource pollution and cause serious harm to human beings and living environment. At present, the air pollution control method mainly comprises the following steps: electrostatic dust collection, cloth bag dust collection, wet desulphurization, catalytic denitration and the like; the method for controlling the degradation-resistant wastewater mainly comprises the following steps: biochemical method, chemical oxidation method and SBR processing technology etc, but present waste gas waste liquid purifier mostly is single pollutant remove device, and area is big, and the flow is complicated, along with environmental protection standard constantly improves, and present environmental protection facility need constantly reform transform, invests in for a long time, running cost is high. Therefore, the development of an economic, feasible and effective waste gas and liquid treatment device and method has important industrial application value.
The plasma is a substance in a fourth state following a solid state, a liquid state and a gaseous state, and is an aggregation state substance, and a series of elementary reactions can occur when high-energy electrons possessed by the plasma collide with gas or liquid molecules, and a plurality of active free radicals, high-energy electrons, ecological oxygen and the like are generated in the reaction process. These active particles such as high-energy electrons and radicals react with various contaminants in gas and liquid, and can be oxidized or decomposed in a very short time. For example, NO in flue gas or heterocyclic harmful substances such as benzene rings, naphthalene rings, and pyridines which are difficult to degrade in waste water are oxidized and decomposed into NO which is easy to remove2Or pollution-free CO2And the like. The device technology has the advantages of high chemical reaction rate, high removal efficiency and the like due to the occurrence of ion, atom and molecule reactions. The traditional plasma reactor is limited by a gravitational field, so that the defects of low mass transfer efficiency, low reaction conversion and the like exist in the process of realizing a gas-liquid or liquid-liquid system. Compared with the traditional gravity field, the supergravity field has the advantages of short material retention time, high-efficiency mass transfer, mixing and the like.
Therefore, the invention provides a plasma coupling hypergravity reactor device, which mutually couples a plasma technology and a hypergravity revolving bed or a hypergravity stator-rotor technology, utilizes the plasma to oxidize and decompose NO in flue gas or heterocyclic harmful substances such as benzene rings, naphthalene rings, pyridine and the like in refractory wastewater into NO which is easy to remove2Or pollution-free CO2Etc. increasing gas or liquid by means of supergravity rotating bed or supergravity fixed-rotor technologyThe collision frequency of the body, the free radicals and the high-energy electrons prolongs the survival time of the active free radicals, avoids the mutual combination of the free radicals from losing activity, and improves the energy utilization efficiency of the plasma, thereby realizing the removal of nitrogen oxides in the flue gas and the treatment of the refractory wastewater, and having important environmental protection, economic and social benefits.
Disclosure of Invention
It is an object of the present invention to provide a plasma coupled hypergravity reactor apparatus. The device can generate various active free radicals, high-energy electrons, ecological oxygen and the like by coupling the plasmas into the hypergravity reactor, and can rapidly oxidize and decompose various pollutants in gas and liquid.
Another object of the present invention is to provide an application of the plasma coupled hypergravity reactor apparatus.
In order to achieve the first purpose, the invention adopts the following technical scheme:
a plasma-coupled hypergravity reactor apparatus that couples a plasma field into a hypergravity reactor; the device comprises a motor, an insulation coupler, an electric slip ring, a boosting voltage regulator, a rotary chamber, a gas inlet, a gas outlet, a liquid inlet and a liquid outlet; the rotary cavity comprises a shell, a rotating shaft, a turntable, a plasma generator, a dielectric layer and an insulating ceramic ring; the plasma generator is an n-level plasma generator; the n-level plasma generator and the turntable form an n-level plasma field; the n level is 1-10 levels; preferably, the n stages are 3-6 stages.
The lower end of the insulation coupling is connected with an output shaft of the motor, and the upper end of the insulation coupling is connected with an output shaft at the lower end of a rotating shaft of the rotating chamber; an electric slip ring is sleeved at the lower end of a rotating shaft of the rotating chamber; the electric slip ring is connected with the boosting voltage regulator through a lead; the electric slip ring and the boosting voltage regulator are both connected with a ground level through leads; the upper end of a rotating shaft of the rotating chamber is fixedly connected with a turntable; the plasma generator is fixed in the rotary cavity and is connected with the boosting voltage regulator through an insulating ceramic ring and a lead; the insulating ceramic ring is fixed on the shell; the shell is provided with a gas inlet, a gas outlet, a liquid inlet and a liquid outlet; a gas outlet is sleeved outside the liquid inlet;
the high-gravity reactor is a high-gravity rotating bed reactor or a high-gravity stator-rotor reactor.
Preferably, when the hypergravity reactor is a hypergravity rotating bed reactor, the turntable is an n-level turntable, and the plasma generator is a high-voltage discharge electrode; the high-voltage discharge electrodes are concentric rings;
a gas inlet and a liquid outlet are arranged on two sides of the lower end of the shell of the rotary chamber, and a gas outlet and a liquid inlet are arranged on the upper end of the shell;
the high-voltage discharge electrode is n stages, one end of each stage is fixedly connected to the inner wall of the shell at equal intervals, and is connected with the boosting voltage regulator through an insulating ceramic ring on the shell; the uppermost first stage of the n-stage high-pressure discharge electrode is fixedly connected with the lower end of the gas outlet, and the upper end of the gas outlet penetrates out of the shell; the lower end of the liquid inlet extends to a position between the uppermost first stage of the n-stage high-pressure discharge electrode and the uppermost first stage of the n-stage rotating disc, and the upper end of the liquid inlet penetrates out of the shell; the n-level high-voltage discharge electrodes and the n-level rotary table are arranged in a staggered mode at equal intervals; each stage of the n-stage turntable is provided with a dielectric layer; n is 1-10; preferably, n is 3 to 6; the static high-voltage discharge electrode and the rotating turntable form a plasma field.
Preferably, the stationary n-stage high-pressure discharge electrode and the rotating n-stage rotating disc form an n-stage plasma field, so that the oxidation of gas-phase components or the decomposition of liquid-phase components which are difficult to decompose can be enhanced for multiple times, and the multi-stage rotating disc can regulate the form of flowing liquid through centrifugal force; 1-10 n-stage plasma fields are generated; more preferably, the number of the n-stage plasma fields is 3 to 6.
Preferably, when the hypergravity reactor is a hypergravity stator-rotor reactor, the turntable is a single-stage turntable; the plasma generator comprises a flow disturbing element and a rotating element; the shapes of the turbulence element and the rotating element are concentric rings;
the upper end of the shell of the rotating chamber is provided with a gas outlet and a liquid inlet, and the lower end of the liquid inlet extends to the upper part of the turntable in the rotating chamber; one side of the shell of the rotating chamber is provided with a gas inlet, and the other side of the shell of the rotating chamber is provided with a liquid outlet;
the turbulence elements are n stages, one end of each stage is fixedly connected to the inner wall of the shell at equal intervals, and the turbulence elements are connected with the boosting voltage regulator through insulating ceramic rings on the shell; the rotating element is n stages, and one end of each stage is fixedly connected to the turntable at equal intervals and rotates along with the turntable; the n-level turbulence elements and the n-level rotating elements are arranged in an equidistance staggered manner; each stage of the n stages of turbulence elements is provided with a dielectric layer; n is 1-10; preferably, n is 3 to 6; the static flow disturbing element and the rotating element rotating along with the rotating disc form a plasma field.
Preferably, the stationary n-stage turbulence element and the n-stage rotating element rotating with the rotating disc form n-stage plasma fields, so that the oxidation of gas-phase components or the decomposition of liquid-phase refractory components can be enhanced for multiple times, and the rotating disc can regulate and control the form of flowing liquid through centrifugal force; 1-10 n-stage plasma fields are generated; more preferably, the number of the n-stage plasma fields is 3 to 6.
The static multistage high-voltage discharge electrode and the rotary multistage rotating disc form a multistage plasma field, or the static multistage turbulence element and the multistage rotating element rotating along with the rotating disc form a multistage plasma field, so that the oxidation of gas-phase components or the decomposition of liquid-phase difficultly-decomposed components can be enhanced for many times, and the utilization efficiency of plasma energy is improved.
Preferably, the dielectric layer is made of quartz, ceramic or common glass; more preferably, quartz is chosen as the dielectric material.
Preferably, an insulating dynamic sealing device is arranged between the shell of the rotating chamber and the rotating shaft.
In order to achieve the second purpose, the invention adopts the following technical scheme:
an application of a plasma coupling hypergravity reactor device in a gas-liquid system or a liquid-liquid system.
Preferably, the gas-liquid system is applied to deep removal of nitrogen oxides in tail gas of a thermal power plant, various kiln smoke and industrial waste gas; the liquid-liquid system is applied to the treatment of refractory wastewater.
Preferably, the application of the gas-liquid system comprises the following steps:
1) gas-phase mixture enters the rotating chamber from the gas inlet, liquid-phase mixture enters the rotating chamber from the liquid inlet, and gas-liquid countercurrent or parallel flow contact is realized under the action of centrifugal force; the rotating speed of a rotating shaft of the rotating chamber is 0-6000 rpm; preferably, the rotation speed is 250-2500 rpm; further, the rotating speed is 400-1500 rpm; the liquid phase is urea or sodium hydroxide;
2) the plasma generator is electrified to form a plasma field, generate various active free radicals, high-energy electrons and ecological oxygen, and perform oxidation, absorption and reaction processes; the alternating voltage is 0-40kV in the process; preferably, the alternating voltage is 0-20 kV; further, the alternating voltage is 0-10 kV; the operation temperature is-30-600 ℃; preferably, the operating temperature is-5-50 ℃; further, the operation temperature is 0-30 ℃; the operating pressure is 0.01-10 MPa; preferably, the operating pressure is between 0.1 and 5 MPa; further, the operating pressure is 0.1-2 MPa;
3) and after the reaction, gas is discharged from the gas outlet, and liquid is discharged from the liquid outlet.
Preferably, the liquid-liquid system is applied by the following specific steps:
1) the liquid phase mixture enters the rotating chamber from the liquid inlet, and forms a liquid drop, a liquid wire or a liquid film under the action of centrifugal force; the rotating speed of a rotating shaft of the rotating chamber is 0-6000 rpm; preferably, the rotation speed is 250-2500 rpm; further, the rotating speed is 400-1500 rpm;
2) the plasma generator is electrified to form a plasma field, generate various active free radicals, high-energy electrons and ecological oxygen, and perform oxidation, decomposition and reaction processes; the alternating voltage is 0-40kV in the process; preferably, the alternating voltage is 0-20 kV; further, the alternating voltage is 0-10 kV; the operation temperature is-30-600 ℃; preferably, the operating temperature is-5-50 ℃; further, the operation temperature is 0-30 ℃; the operating pressure is 0.01-10 MPa; preferably, the operating pressure is between 0.1 and 5 MPa; further, the operating pressure is 0.1-2 MPa;
3) liquid after reaction is discharged from the liquid outlet.
The method regulates and controls the form of flowing liquid and the discharge intensity of a plasma field by accurately controlling parameters such as rotating speed, alternating voltage, operating temperature, operating pressure and the like, thereby completing the deep removal of nitrogen oxides and the treatment of refractory wastewater in a plasma coupling hypergravity reactor device.
The invention has the following beneficial effects:
1) the plasma is coupled into a hypergravity reactor, high-energy electrons and active groups generated by plasma discharge are utilized to oxidize, decompose and react the waste gas and the waste liquid, meanwhile, by means of a hypergravity revolving bed technology, the collision frequency of gas or liquid with free radicals and high-energy electrons is increased, the energy utilization efficiency of the plasma is improved, and therefore the treatment of deep removal of nitrogen oxides and refractory components in the waste water is realized. The super-gravity rotating bed or the super-gravity stator and rotor technology has the advantages of small occupied area, small equipment volume, convenience in operation and the like, and is particularly suitable for upgrading and transforming factories with limited space.
2) The treatment of deep removal of nitrogen oxides and refractory components in wastewater is realized by the plasma coupled super-gravity rotating bed, and great promotion and promotion effects are generated on the environmental pollution prevention and treatment work in China.
3) The multi-stage plasma field can enhance the oxidation of gas-phase components or the decomposition of liquid-phase components which are difficult to decompose for many times, and improve the utilization efficiency of plasma energy; the form of flowing liquid and the discharge intensity of a plasma field are regulated and controlled by accurately controlling parameters such as rotating speed, alternating voltage, operating temperature, operating pressure and the like; through proper configuration of the structure and accurate control of parameters, the removal rate of nitrogen oxides and the degradation rate of wastewater are improved.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 shows a schematic structural diagram of a plasma coupled supergravity rotating bed reactor device in example 1 of the present invention.
FIG. 2 is a schematic structural diagram of a plasma coupled supergravity stator-rotor reactor apparatus according to example 2 of the present invention.
Fig. 3 shows a process flow diagram of a plasma coupled high gravity rotating bed reactor device used in a gas-liquid system in embodiment 3 of the present invention.
Fig. 4 shows a process flow diagram of a plasma coupled high gravity rotating bed reactor device used in a liquid-liquid system in example 4 of the present invention.
Fig. 5 shows a schematic structure diagram of a prior art plasma-hypergravity coupling cooperative gas pollutant removal device.
Detailed Description
In order to more clearly illustrate the invention, the invention is further described below with reference to preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
Example 1
As shown in fig. 1, a plasma coupled supergravity rotating bed reactor apparatus 100 includes a motor 101, an insulating coupling 103, an electrical slip ring 102, a step-up voltage regulator 112, a rotating chamber 111, an insulating dynamic seal device 117, a gas inlet 105, a gas outlet 106, a liquid inlet 107, and a liquid outlet 110;
the rotating chamber 111 comprises a shell 109, a rotating shaft 104, a three-stage turntable 114, a three-stage high-voltage discharge electrode 108, a dielectric layer 115 and an insulating ceramic ring 116;
the upper end of the insulation coupling 103 is connected with an output shaft of a rotating shaft 104 of the rotating chamber, and the lower end is connected with an output shaft of the motor 101; the lower end of a rotating shaft 104 of the rotating chamber is sleeved with an electric slip ring 102; the electric slip ring 102 is connected with the booster voltage regulator 112 through a lead; the electric slip ring 102 and the booster voltage regulator 112 are both connected with a ground level 113 through leads; the upper end of the rotating shaft 104 of the rotating chamber is fixedly connected with a third-stage turntable 114; an insulating dynamic sealing device 117 is arranged between the shell 109 of the rotating chamber and the rotating shaft 104; a gas inlet 105 and a liquid outlet 110 are arranged on two sides of the lower end of a shell 109 of the rotary chamber, a gas outlet 106 and a liquid inlet 107 are arranged on the upper end of the shell, and the gas outlet 106 is sleeved outside the liquid inlet 107;
one end of each stage of the three-stage high-voltage discharge electrodes 108 is fixedly connected to the inner wall of the shell 109 at equal intervals, and is connected with the booster regulator 112 through an insulating ceramic ring 116 on the shell 109; the first stage at the top of the three-stage high-voltage discharge electrode 108 is fixedly connected with the lower end of the gas outlet 106, and the upper end of the gas outlet 106 penetrates out of the shell 109; the gas outlet 106 is sleeved outside the liquid inlet 107, the lower end of the liquid inlet 107 extends to a position between the first stage at the top of the high-pressure discharge electrode 108 and the first stage at the top of the third-stage turntable 114, and the upper end of the liquid inlet 107 penetrates through the shell 109;
the three-level high-voltage discharge electrodes 108 and the three-level turntable 114 are arranged in an equidistance and staggered manner; each stage of the three-stage turntable 114 is provided with a dielectric layer 115; the stationary three stage high voltage discharge electrodes 108 and the rotating three stage rotating disk 114 form three stage plasma fields through which the fluid passes layer by layer in a baffled fashion.
Example 2
As shown in fig. 2, a plasma coupled supergravity stator-rotor reactor apparatus 200 includes a motor 210, an insulating coupler 211, an electrical slip ring 212, a boost regulator 202, a rotating chamber 214; the rotating chamber 214 comprises a shell 207, a rotating shaft 215, a single-stage turntable 216, a three-stage spoiler element 205, a three-stage rotating element 208, a dielectric layer 209 and an insulating ceramic ring 204;
the output shaft of the motor 210 is fixedly connected with the insulating coupling 211 upwards; the output shaft of the insulating coupling 211 is connected with the rotating shaft 215 of the rotating chamber upwards; the lower end of a rotating shaft 215 of the rotating chamber is provided with an electric slip ring 212; the electric slip ring 212 is connected with the booster voltage regulator 202 through a lead; the electric slip ring 212 and the booster voltage regulator 202 are both connected with the ground level 201 through leads; the upper end of a rotating shaft 215 of the rotating chamber is connected with a single-stage turntable 216; an insulating dynamic sealing device 213 is arranged between the shell 207 of the rotating chamber and the rotating shaft 215; the upper end of the shell 207 of the rotating chamber is provided with a gas outlet 218 and a liquid inlet 217, the gas outlet 218 is sleeved outside the liquid inlet 217, and the lower end of the liquid inlet 217 extends to the upper part of the turntable 216 in the rotating chamber 214; one side of the housing 207 of the rotating chamber is provided with a gas inlet 203, and the other side is provided with a liquid outlet 206;
one end of each stage of the three-stage turbulence element 205 is fixedly connected to the inner wall of the shell 207 at equal intervals, and is connected with the boost voltage regulator 202 through an insulating ceramic ring 204 and a lead on the shell 207; one end of each stage of the three-stage rotating element 208 is fixedly connected to the single-stage turntable 216 at equal intervals and rotates along with the single-stage turntable 216; the three-stage turbulence elements 205 and the three-stage rotating elements 208 are arranged in an equidistant staggered manner; dielectric layer 209 is disposed on each stage of tertiary spoiler element 205. The stationary tertiary spoiler element 205 and the tertiary rotating element 208 rotating with the turntable form a tertiary plasma field.
Example 3
As shown in fig. 1 and 3, a method for deeply removing nitrogen oxides by using a plasma coupled high gravity rotating bed reactor device comprises the following steps:
the mixed gas flows out from a nitric oxide and nitrogen mixed gas tank 301 and an air tank 302, a pressure regulating valve 303 is respectively arranged above the gas tanks, a mass flow meter 304 records the flow rate of the mixed gas, and the mixed gas enters a rotating chamber of the plasma coupling hypergravity rotating bed reactor device through a main valve 305 and a check valve 306 through a gas inlet 105 and is baffled to pass through a 3-level plasma field. Meanwhile, the alkali liquor (urea or sodium hydroxide, etc.) stored in the alkali liquor tank 308 is conveyed into the rotating chamber of the plasma coupled supergravity rotating bed reactor device through the liquid inlet 107 via the ball valve 311 and the mass flow meter 312 by the pump 310, wherein the flow rate of the alkali liquor is recorded by the mass flow meter 311. The alkali liquor entering the rotating chamber of the plasma coupling hypergravity rotating bed reactor device contacts with the nitrogen oxide in a countercurrent or parallel flow manner, the generated salt substances and the alkali liquor enter the alkali liquor tank 308 again through the liquid outlet 110, and the alkali liquor is supplemented through the lateral alkali adding pipe 309, so that an alkali liquor circulation loop is formed.
Example 4
Referring to fig. 1 and 4, a method for treating refractory wastewater by using a plasma coupled hypergravity rotating bed reactor device comprises the following steps:
waste water (containing heterocyclic refractory harmful substances such as benzene ring, naphthalene ring, pyridine and the like) enters a waste liquid tank 402 from a waste liquid inlet 401, the outflow quantity of the waste liquid is controlled by a throttle valve 403, a pump 404 conveys the waste liquid to a liquid inlet 107 through a ball valve 405 and a mass flow meter 406, and multiple stages are utilizedVarious active free radicals, high-energy electrons, ecological oxygen and the like generated by the plasma field thoroughly oxidize the nondegradable waste liquid into CO2And H2O, etc., mixed liquor 408 enters liquid storage tank 407 through liquid outlet 110 after degradation.
Example 5
The process described in example 3 was used to deeply remove nitrogen oxides from flue gases,
the alkali liquor is a urea solution with the mass fraction of 2-10%, and the gas phase flow is controlled to be 2m3H, liquid phase flow rate of 40L/h, inlet NOxThe concentration is 1000mg/m3And the concentration of NO at the final gas outlet is less than 50mg/m under the operating conditions of 1600rpm, 25 ℃ of temperature, 0.1MPa of pressure and 10kV of alternating voltage3。
Example 6
The operation steps for deeply removing the nitrogen oxides in the flue gas are the same as those in the example 5, and the difference is that:
under the operating conditions that the rotating speed is 6000rpm, the temperature is 600 ℃, the pressure is 10MPa and the alternating voltage is 40kV, the concentration of NO at the final gas outlet is less than 25mg/m3。
Example 7
The operation steps for deeply removing the nitrogen oxides in the flue gas are the same as those in the example 5, and the difference is that:
under the operating conditions that the rotating speed is 3000rpm, the temperature is 300 ℃, the pressure is 5MPa and the alternating voltage is 20kV, the concentration of NO at the final gas outlet is less than 30mg/m3。
Example 8
The operation steps for deeply removing the nitrogen oxides in the flue gas are the same as those in the example 5, and the difference is that:
under the operating conditions that the rotating speed is 2500rpm, the temperature is 50 ℃, the pressure is 2MPa and the alternating voltage is 10kV, the concentration of NO at the final gas outlet is less than 75mg/m3。
Example 9
The operation steps for deeply removing the nitrogen oxides in the flue gas are the same as those in the example 5, and the difference is that:
the rotating speed is 250rpm, and the temperature is 30Under the operating conditions of 0.1MPa pressure and 5kV alternating voltage, the concentration of NO at the final gas outlet is less than 135mg/m3。
Example 10
The operation steps for deeply removing the nitrogen oxides in the flue gas are the same as those in the example 5, and the difference is that:
under the operating conditions that the rotating speed is 400rpm, the temperature is-5 ℃, the pressure is 1MPa and the alternating voltage is 3kV, the concentration of NO at the final gas outlet is less than 200mg/m3。
Example 11
The process described in example 4 was used for the treatment of refractory wastewater:
the wastewater is an acid red B solution with the degradation concentration of 300mg/L, the flow rate of the wastewater entering a rotating bed is 0.5L/min, the rotating speed is 1500rpm, the temperature is 20 ℃, the degradation rate of the acid red B solution reaches more than 99 percent under the operating conditions that the normal pressure is normal pressure and the alternating voltage is 40 kV;
example 12
The treatment of the hardly degradable wastewater was carried out in the same manner as in example 11 except that:
the wastewater is a phenol solution with the degradation concentration of 400mg/L, the flow rate of the wastewater entering the rotating bed is 0.45L/min, the rotating speed is 1600rpm, the temperature is 20 ℃, the degradation rate of the phenol solution is over 95 percent under the normal pressure and the alternating voltage is 20 kV.
Example 13
The treatment of the hardly degradable wastewater was carried out in the same manner as in example 11 except that:
the degradation rate of the acid red B solution is up to more than 90% finally under the operating conditions that the rotating speed is 250rpm, the temperature is 30 ℃, the normal pressure is high, and the alternating voltage is 10 kV.
Example 14
The treatment of the hardly degradable wastewater was carried out in the same manner as in example 12 except that:
the degradation rate of the phenol solution is up to more than 95% under the operating conditions of the rotating speed of 2500rpm, the temperature of 30 ℃, the normal pressure and the alternating voltage of 5 kV.
Example 15
The plasma coupled hypergravity stator-rotor reactor device is used for a gas-liquid system, and the operation method is the same as that in example 3, except that the plasma coupled hypergravity rotary bed reactor is replaced by a plasma coupled hypergravity stator-rotor reactor.
The process is adopted to deeply remove the nitrogen oxides in the flue gas,
the alkali liquor is a urea solution with the mass fraction of 2-10%, and the gas phase flow is controlled to be 2m3H, liquid phase flow rate of 40L/h, inlet NOxThe concentration is 1000mg/m3And the concentration of NO at the final gas outlet is less than 50mg/m under the operating conditions of 1600rpm, 20 ℃ of temperature, normal pressure and 10kV of alternating voltage3。
Example 16
The plasma coupled hypergravity stator-rotor reactor device is used for a liquid-liquid system, and the operation method is the same as that in example 4, except that the plasma coupled hypergravity rotary bed reactor is replaced by a plasma coupled hypergravity stator-rotor reactor.
The process is adopted for treating the refractory wastewater:
the wastewater is an acid red B solution with the degradation concentration of 300mg/L, the flow rate of the wastewater entering a rotating bed is 0.5L/min, the rotating speed is 1500rpm, the temperature is 20 ℃, the degradation rate of the acid red B solution reaches more than 95% under the operating conditions that the normal pressure is normal pressure and the alternating voltage is 10 kV;
comparative example 1
The operation method for deeply removing the nitrogen oxides in the flue gas is the same as that of the embodiment 5, and the difference is that:
adopting a common hypergravity rotating bed reactor, and the concentration of NO at the final gas outlet is 380mg/m3. Therefore, the method adopts the plasma coupled super-gravity rotary bed reactor device to deeply remove the nitrogen oxides in the flue gas, and the final removal rate of the gas pollutants is far higher than that of the gas pollutants removed by adopting a common super-gravity rotary bed reactor.
Comparative example 2
The operation method of the treatment of the degradation-resistant wastewater is the same as that of the example 16, and the difference is that:
the degradation rate of the acid red B solution is 75 percent by adopting a common hypergravity stator-rotor reactor. Therefore, the invention adopts the plasma coupled hypergravity stator-rotor reactor device to treat the wastewater which is difficult to degrade, and the final degradation rate of the wastewater is far higher than that of the wastewater degraded by adopting a common hypergravity stator-rotor reactor.
Comparative example 3
The operation method for deeply removing the nitrogen oxides in the flue gas is the same as that of the embodiment 5, and the difference is that:
by adopting the plasma-hypergravity coupling synergetic removal device in the prior art CN201510364125.7 shown in figure 5, the final concentration of NO at a gas outlet is 375mg/m3Far in excess of the concentration of the gas outlet NO in example 5.
Therefore, the invention adopts the plasma coupled hypergravity rotating bed reactor device to deeply remove the nitrogen oxides in the flue gas, adopts the multistage high-voltage discharge electrode and the multistage turntable to form the multistage plasma field, and finally the removal rate of the gas pollutants is far higher than that of the plasma-hypergravity coupling device in the prior art.
And (4) conclusion: the static multistage high-voltage discharge electrode and the rotary multistage rotating disc form a multistage plasma field, or the static multistage turbulence element and the multistage rotating element rotating along with the rotating disc form a multistage plasma field, the plasma generator and the rotating disc are matched with each other and act in a synergistic manner, so that the action effect of the plasma field is optimal, and the action effect of the plasma field can be weakened to different degrees due to the lack of any component. The invention improves the utilization efficiency of plasma energy, thereby realizing the treatment of deeply removing nitrogen oxides and refractory components in wastewater.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.

Claims (6)

1. A plasma coupling hypergravity reactor device is characterized by comprising a motor, an insulating coupler, an electric slip ring, a boosting voltage regulator, a rotating chamber, a gas inlet, a gas outlet, a liquid inlet and a liquid outlet; the rotary cavity comprises a shell, a rotating shaft, a turntable, a plasma generator, a dielectric layer and an insulating ceramic ring; the plasma generator is an n-stage plasma generator; the n-level plasma generator and the turntable form an n-level plasma field; the n level is 2-10 levels;
the lower end of the insulation coupling is connected with an output shaft of the motor, and the upper end of the insulation coupling is connected with an output shaft at the lower end of a rotating shaft of the rotating chamber; an electric slip ring is sleeved at the lower end of a rotating shaft of the rotating chamber; the electric slip ring is connected with the boosting voltage regulator through a lead; the electric slip ring and the boosting voltage regulator are both grounded through a lead; the upper end of a rotating shaft of the rotating chamber is fixedly connected with a turntable; the plasma generator is fixed in the rotary cavity and is connected with the boosting voltage regulator through an insulating ceramic ring and a lead; the insulating ceramic ring is fixed on the shell; the shell is provided with a gas inlet, a gas outlet, a liquid inlet and a liquid outlet; a gas outlet is sleeved outside the liquid inlet;
the supergravity reactor is a supergravity stator-rotor reactor, and the turntable is a single-stage turntable; the plasma generator comprises a flow disturbing element and a rotating element; the shapes of the turbulence element and the rotating element are concentric rings;
the upper end of the shell of the rotating chamber is provided with a gas outlet and a liquid inlet, and the lower end of the liquid inlet extends to the upper part of the turntable in the rotating chamber; one side of the shell of the rotating chamber is provided with a gas inlet, and the other side of the shell of the rotating chamber is provided with a liquid outlet;
the turbulence elements are n stages, one end of each stage is fixedly connected to the inner wall of the shell at equal intervals, and the turbulence elements are connected with the boosting voltage regulator through insulating ceramic rings on the shell; the rotating element is n stages, and one end of each stage is fixedly connected to the turntable at equal intervals and rotates along with the turntable; the n-level turbulence elements and the n-level rotating elements are arranged in an equidistance staggered manner; each stage of the n stages of turbulence elements is provided with a dielectric layer;
and the n-stage turbulence elements and the n-stage rotating elements rotating along with the turntable form n-stage plasma fields.
2. The plasma coupled hypergravity reactor apparatus of claim 1, wherein the dielectric layer is made of quartz, ceramic or ordinary glass; and an insulating dynamic sealing device is arranged between the shell of the rotating chamber and the rotating shaft.
3. Use of a plasma coupled hypergravity reactor device according to any of claims 1-2, characterized in that the device is used in gas-liquid systems or liquid-liquid systems.
4. The application of the plasma coupled hypergravity reactor device according to claim 3, characterized in that the application of the gas-liquid system is deep removal of nitrogen oxides in industrial waste gas; the liquid-liquid system is applied to the treatment of refractory wastewater.
5. The application of the plasma coupled hypergravity reactor device according to claim 3, characterized in that the gas-liquid system is applied by the following specific steps:
1) the gas-phase mixture enters the rotating chamber from the gas inlet, the liquid phase enters the rotating chamber from the liquid inlet, and the gas and the liquid are in countercurrent or parallel flow contact under the action of centrifugal force; the rotating speed of a rotating shaft of the rotating chamber is 0-6000 rpm; the liquid phase is urea or sodium hydroxide;
2) the plasma generator is electrified to form a plasma field, generate various active free radicals, high-energy electrons and ecological oxygen, and perform oxidation, absorption and reaction processes; the alternating voltage is 0-40kV in the process; the operation temperature is-30-600 ℃; the operating pressure is 0.01-10 MPa; 3) and after the reaction, gas is discharged from the gas outlet, and liquid is discharged from the liquid outlet.
6. The application of the plasma coupled hypergravity reactor device according to claim 3, characterized in that the liquid-liquid system is applied by the following specific steps:
1) the liquid phase mixture enters the rotating chamber from the liquid inlet, and forms a liquid drop, a liquid wire or a liquid film under the action of centrifugal force; the rotating speed of a rotating shaft of the rotating chamber is 0-6000 rpm;
2) the plasma generator is electrified to form a plasma field, generate various active free radicals, high-energy electrons and ecological oxygen, and perform oxidation, decomposition and reaction processes; the alternating voltage is 0-40kV in the process; the operation temperature is-30-600 ℃; the operating pressure is 0.01-10 MPa;
3) liquid after reaction is discharged from the liquid outlet.
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