CN108355469A - A kind of method of two-part plasmon coupling deep purifying food and drink exhaust gas - Google Patents

A kind of method of two-part plasmon coupling deep purifying food and drink exhaust gas Download PDF

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Publication number
CN108355469A
CN108355469A CN201711405083.2A CN201711405083A CN108355469A CN 108355469 A CN108355469 A CN 108355469A CN 201711405083 A CN201711405083 A CN 201711405083A CN 108355469 A CN108355469 A CN 108355469A
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exhaust gas
food
drink
drink exhaust
purification
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CN108355469B (en
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李小梅
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Beijing Century Star Light Environmental Protection Technology Co Ltd
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Beijing Century Star Light Environmental Protection Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/32Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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 adsorption, e.g. preparative gas chromatography
    • B01D53/04Separation 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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407Constructional details of adsorbing systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/32Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
    • B01D53/323Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00 by electrostatic effects or by high-voltage electric fields
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708Volatile organic compounds V.O.C.'s
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/80Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/806Microwaves
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/80Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/818Employing electrical discharges or the generation of a plasma

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

The invention discloses a kind of methods of two-part plasmon coupling deep purifying food and drink exhaust gas, this method first passes through high-pressure electrostatic plasma reactor and carries out charged separation to the drop in food and drink exhaust gas, volatile organic compounds Long carbon chain is set to fragment into short carbon chain micromolecular compound simultaneously, recycle the short carbon chain volatile organic compounds in microwave plasma reactor absorption food and drink exhaust gas, and it is made to resolve into carbon dioxide and water, the pollutant in food and drink exhaust gas can be effectively removed, so that treated, gas can be with direct emission air, this method is easy to operate, operation energy consumption is low, it is high to the removal rate of food and drink exhaust gas.

Description

A kind of method of two-part plasmon coupling deep purifying food and drink exhaust gas
Technical field
The invention belongs to filed of flue gas purification, and in particular to a kind of two-part plasmon coupling deep purifying food and drink exhaust gas Method.
Background technology
In recent years, with the quick promotion of Urbanization in China, catering industry is presented eruptive growth, results in food and drink Exhaust emission is on the rise.First in the condition of high temperature, edible oil generates a large amount of thermal oxide decomposition products, when smoke point reaches At 170 DEG C, there is the blue smoke mist of initial stage decomposition, continue to increase with temperature, decomposition rate is accelerated, when temperature reaches 250 DEG C When, there are a large amount of oil smoke in pasta, and with sharp aroma.Food and drink exhaust emission includes mainly organic contained by edible oil and vegetable The pollution components of volatile component, fuel combustion generation that object and its thermal oxide and thermal cracking generate.
Correlative study shows that kitchen fumes up to 13%, have been considered and industrial waste gas, motor-driven the contribution of PM2.5 " the three big killers " of the urban atmospheric pollution of tail gas together.In addition to this, a large amount of NO is contained in kitchen fumesX/ polycyclic virtue Hydrocarbon etc. " three cause " substance, conventional processing technique is difficult to carry out processing up to standard.Current existing food and drink fume treatment technology, it is such as wet , there is pollutant integrated treatment in method spray process technology, filtration treatment technology, photodissociation treatment technology, electrostatic process etc. Effect is poor, cannot complete qualified discharge, the shortcomings of operation energy consumption is high.
Therefore, there is an urgent need for the high and simple to operate food and drink exhaust gas purifying methods of a kind of efficient low-consume, removal efficiency.
Invention content
In order to overcome the above problem, present inventor has performed sharp studies, as a result, it has been found that:First pass through high-pressure electrostatic plasma Reactor according carries out charged separation to the drop in food and drink exhaust gas, while volatile organic compounds Long carbon chain being made to fragment into short carbon Chain micromolecular compound recycles the short carbon chain volatile organic compound in microwave plasma reactor absorption food and drink exhaust gas Object, and it is made to resolve into carbon dioxide and water, the pollutant in food and drink exhaust gas can be effectively removed so that treated, and gas can With direct emission air, so as to complete the present invention.
In particular it is object of the present invention to provide following aspect:
(1), a kind of method of purification food and drink exhaust gas, wherein this approach includes the following steps:
Step (1) carries out initial gross separation and preliminary exposition to food and drink exhaust gas, removes portion;
Step (2) is purified gas to treated that remaining food and drink exhaust gas carries out after-treatment through step (1).
(2), according to above-mentioned (1) purification food and drink exhaust gas method, wherein in step (1), the initial gross separation and Preliminary exposition carries out in high-pressure electrostatic plasma reactor.
(3), the method for the purification food and drink exhaust gas according to above-mentioned (2), wherein described be initially separated into is pressed using height Electricity carries out charged separation to the exhaust gas drop of different-grain diameter in food and drink exhaust gas, and/or
The preliminary exposition is the chemical combination that the Long carbon chain of volatile organic compounds in food and drink exhaust gas is fragmented into short carbon chain Object.
(4), the method for the purification food and drink exhaust gas according to above-mentioned (2), wherein the high-pressure electrostatic plasma reaction Device carries out separation and preliminary exposition by being uniformly arranged on internal electrode tube to food and drink exhaust gas, and the quantity of the electrode tube is by eating Exhausted air quantity is drunk to determine,
Preferably, the electrode tube is arranged in parallel, and the setting direction of the electrode tube is consistent with the direction of air-flow.
(5), the method for the purification food and drink exhaust gas according to above-mentioned (1), wherein in step (2), the residue food and drink is useless The after-treatment of gas carries out in microwave plasma reactor, and the after-treatment includes being adsorbed to remaining food and drink exhaust gas And second decomposition.
(6), the method for the purification food and drink exhaust gas according to above-mentioned (5), wherein the absorption is by being arranged in microwave What the adsorption column in plasma reactor was realized, and/or
The second decomposition is to be decomposed the remaining food and drink exhaust gas that adsorption column adsorbs by microwave plasma.
(7), according to above-mentioned (6) purification food and drink exhaust gas method, wherein the adsorption column have it is multiple, set It is consistent with airflow direction to set direction.
(8), the method for the purification food and drink exhaust gas according to above-mentioned (7), wherein the adsorption column has ordered structure, Preferably regular active carbon adsorption column.
(9), a kind of system of purification food and drink exhaust gas, is preferred for implementing the purification meal described in one of above-mentioned (1) to (8) Drink the system of exhaust gas method, wherein the system comprises the high-pressure electrostatic plasma reactors 4 and microwave plasma of connection Reactor 6.
(10), the system according to above-mentioned (9), wherein the high-pressure electrostatic plasma reactor 4 includes that high pressure is quiet Electronic box body 44 is evenly arranged with electrode tube 42 in high-pressure electrostatic babinet 44, and the electrode tube 42 is arranged in parallel, and/or
The microwave plasma reactor 6 includes microwave enclosure 63, is evenly arranged in the microwave enclosure 63 more A adsorption column 62, for adsorbing remaining food and drink exhaust gas.
Advantageous effect possessed by the present invention includes:
(1) method of purification food and drink exhaust gas provided by the invention is had both by two-part plasmon coupling deep purifying It detaches oil flue waste gas drop and purifies the effect of gas phase volatile organic compounds, device is simple, easy to operate, and flow is short, fortune Low energy consumption for row;
(2) method of purification food and drink exhaust gas provided by the invention detaches big grain size exhaust gas liquid using the effect of high-pressure electrostatic Drop, while the Long carbon chain of vapor phase contaminants is fragmented into short carbon chain, removal efficiency is high;
(3) method of purification food and drink exhaust gas provided by the invention, utilizes the absorption of activated carbon and the degradation of microwave, energy It is enough efficiently to remove volatile gaseous pollutant so that treated, and gas reaches standard, can be directly discharged to air.
Description of the drawings
Fig. 1 is the positive structure schematic of purification food and drink waste gas system of the present invention;
Fig. 2 is the dimensional structure diagram of purification food and drink waste gas system of the present invention;
Fig. 3 is the dimensional structure diagram of high-pressure electrostatic plasma reactor of the present invention;
Fig. 4 a are the dimensional structure diagram of microwave plasma reactor of the present invention;
Fig. 4 b are the left view schematic diagram of microwave plasma reactor of the present invention.
Reference numeral
1- wind speed air volume meters;
2- pops one's head in;
3- air inlets;
4- high-pressure electrostatic plasma reactors;
41- electrodes;
42- electrode tubes;
The gaps 43-;
44- high-pressure electrostatic babinets;
5- first shrinks gas port;
6- microwave plasma reactors;
61- microwave magnetron heads;
62- adsorption columns;
63- microwave enclosures;
64- cabinet doors;
7- second shrinks gas port;
8- regulating valves;
9- expands gas port;
10- smoke exhaust fans;
11- exhaust outlets;
12- switch boards.
Specific implementation mode
Below by preferred embodiment and embodiment, the present invention is described in more detail.Pass through these explanations, this hair Bright feature and advantage will become more apparent from clear.
Dedicated word " exemplary " means " being used as example, embodiment or illustrative " herein.Here as " exemplary " Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.
In the present invention, food and drink exhaust gas has gaseous state, liquid, three kinds of forms of solid-state, gaseous pollutant (VOCs) and air Form mixed gas;The liquid of bulky grain, formation can natural subsidence suspended things in air for solid contaminant distribution;It is short grained Liquid, solid contaminant distribution form metastable aerosol in air, from the unprocessed food and drink being expelled directly out in kitchen Exhaust gas contains the pollutant of form in above-mentioned 3 simultaneously.
According to the first aspect of the invention, a kind of method of purification food and drink exhaust gas is provided, this approach includes the following steps:
Step (1) carries out initial gross separation and preliminary exposition to food and drink exhaust gas.
According to a kind of preferred embodiment of the present invention, the initial gross separation of the food and drink exhaust gas and preliminary exposition are quiet in high pressure It is carried out in electro-plasma reactor.
Wherein, high-pressure electrostatic plasma reactor is the synthesis of high-pressure electrostatic and plasma.Plasma be by from The species compositions such as son, electronics, free radical and excited atom or molecule belong to the 4th kind of state except solid-state, liquid, gaseous state, by Positive and negative charge in the gas in certain spatial dimension is equal, thus formation plasma.
It is described to be initially separated into using electrion to different grains in food and drink exhaust gas in further preferred embodiment The exhaust gas drop of diameter carries out charged separation.
In the present invention, the food and drink exhaust gas includes exhaust gas drop and volatile organic compounds.
In embodiment still more preferably, the preliminary exposition is by volatile organic compounds in food and drink exhaust gas Long carbon chain fragment into the compound of short carbon chain.
Wherein, the compound of the short carbon chain enters next stage cleaning equipment.
The inventors discovered that the high activity Strong oxdiative species generated during electrion can be by volatile organic The Long carbon chain for closing object fragments into the compound of short carbon chain, realizes the preliminary exposition of pollutant.
According in a kind of preferred embodiment of the present invention, the inlet velocity of the high-pressure electrostatic plasma reactor is 5~25m/s, pressure are reduced to 100~300Pa.
Preferably, the voltage of the high-pressure electrostatic plasma reactor is 10~15kV.
In the present invention, the energy expenditure of high-pressure electrostatic plasma reactor and the foundation of ventilator selection are pressure drops, The pressure drop refers to the difference of two pressure values with pressure face, reflect pressure one section of pipeline loss situation of change. Select suitable inlet velocity and pressure drop that can effectively improve separative efficiency.
In further preferred embodiment, the high-pressure electrostatic plasma reactor is by being uniformly arranged on inside Electrode tube to food and drink exhaust gas carry out separation and preliminary exposition, the quantity of the electrode tube determined by food and drink exhausted air quantity.
Wherein, the quantity of the electrode tube is unlimited, is specifically arranged according to the food and drink exhausted air quantity being passed through, and can be single or more It is a to compose in parallel.
In embodiment still more preferably, the electrode tube is arranged in parallel, and is internally provided in the motor pipe Electrode,
There is gap so that food and drink exhaust gas passes through between the electrode and electrode tube.
Preferably, the setting direction of the electrode tube and the direction of air-flow are consistent.
Step (2) is purified gas to treated that remaining food and drink exhaust gas carries out after-treatment through step (1).
According to a kind of preferred embodiment of the present invention, the after-treatment of the residue food and drink exhaust gas is in microwave plasma It is carried out in reactor.
Wherein, the main component of the remaining food and drink exhaust gas is the compound of short carbon chain, through high-pressure electrostatic plasma Reactor is discharged, into microwave plasma reactor.
In further preferred embodiment, the after-treatment include to remaining food and drink exhaust gas carry out absorption and it is secondary It decomposes.
Wherein, the present inventor pass through the study found that microwave plasma reactor have higher ionization and degree of decomposition, Since it does not have internal electrode, without any substance other than working gas, pollution-free source in reactor.
In embodiment still more preferably, the absorption is by being arranged in microwave plasma reactor What adsorption column was realized.
According to a kind of preferred embodiment of the present invention, the second decomposition is to be inhaled adsorption column by microwave plasma Attached remaining oil flue waste gas is decomposed.
Wherein, the second decomposition is to generate Strong oxdiative active specy using the thermal effect and induction of microwave plasma Effect, the short carbon chain compound of remaining food and drink exhaust gas of adsorption column absorption is resolved into carbon dioxide and water.
In further preferred embodiment, the microwave plasma reactor includes microwave magnetron head and microwave Babinet is provided with adsorption column in the microwave enclosure, for adsorbing remaining food and drink exhaust gas.
Wherein, the effect of the microwave magnetron head is that microwave power supply is supplied the low-frequency electrical energy of microwave magnetron head micro- High frequency microwave energy is converted to by magnetron in wave head.Its quantity is unlimited, can have it is single or multiple, by practical decomposable process Remaining food and drink exhausted air quantity determine.
In a more step preferred embodiment, the adsorption column have it is multiple, setting direction is consistent with airflow direction.
Preferably, the adsorption column has ordered structure, preferably regular active carbon adsorption column.
The inventors discovered that setting adsorption column to ordered structure, it can be realized and be adsorbed by simple serial or parallel connection The amplification of column promotes suction-operated.
In the present invention, the deep purifying of two-part plasmon coupling, energy are carried out to food and drink exhaust gas using the above method Enough make food and drink exhaust gas after two-stage treatment, the degradation rate of gaseous pollutant reaches 85% or more, and final exhaust can reach Discharge standard direct emission air.
According to the second aspect of the invention, it is useless to provide a kind of purification food and drink that above-mentioned purification food and drink exhaust gas method is utilized Gas system, as shown in figures 1-4, the system comprises the high-pressure electrostatic plasma reactor 4 and microwave plasma of connection are anti- Answer device 6.
In the present invention, as left side, the direction of discharge is right side in the direction being passed through using food and drink off-gas flows.
According to a kind of preferred embodiment of the present invention, as shown in figure 3, the high-pressure electrostatic plasma reactor 4 wraps High-pressure electrostatic 44 is included, electrode tube 42 is evenly arranged in high-pressure electrostatic babinet 44, the electrode tube 42 is arranged in parallel.
Wherein, the quantity of the electrode tube 42 is unlimited, is specifically arranged according to the food and drink exhausted air quantity being passed through, can be single Or it multiple composes in parallel.
In further preferred embodiment, the setting direction of the electrode tube 42 is consistent with the direction of air-flow.
In embodiment still more preferably, it is internally provided with electrode 41 in the electrode tube 42,
There is gap 43 so that food and drink exhaust gas passes through between the electrode 41 and electrode tube 42.
According to a kind of preferred embodiment of the present invention, as illustrated in fig. 1 and 2, the microwave plasma reactor 6 passes through First contraction gas port 5 is connected with high-pressure electrostatic plasma reactor 4, and the residue food and drink exhaust gas is by high-pressure electrostatic plasma Reactor 4 is discharged, and shrinking gas port 5 by first enters microwave plasma reactor 6.
In further preferred embodiment, as shown in fig. 4 a, the microwave plasma reactor 6 includes microwave magnetic Keyholed back plate head 61 and the microwave enclosure 63 for being connected to one side, the microwave magnetron head 61 are used to provide microwave energy for reactor, The microwave enclosure 63 provides reacting environment for waste gas purification.
Preferably, the side of the microwave enclosure 63 is additionally provided with cabinet door 64.
Wherein, the effect of microwave magnetron head 61 is that microwave power supply is supplied the low-frequency electrical energy of microwave magnetron head in microwave High frequency microwave energy is converted to by magnetron in head.
In embodiment still more preferably, the quantity of the microwave magnetron head 61 is unlimited, can have single It is a or multiple, it is determined by the remaining food and drink exhausted air quantity in practical decomposable process.
According to a kind of preferred embodiment of the present invention, multiple adsorption columns are evenly arranged in the microwave enclosure 63 62, for adsorbing remaining food and drink exhaust gas.
In further preferred embodiment, as shown in Figure 4 b, the setting direction and airflow direction of the adsorption column 62 Unanimously.
In embodiment still more preferably, the adsorption column 62 has ordered structure, it is however preferred to have regular knot The active carbon adsorption column of structure.
The inventors discovered that setting adsorption column to ordered structure, it can be realized and be adsorbed by simple serial or parallel connection The amplification of column promotes suction-operated.
According to a kind of preferred embodiment of the present invention, as illustrated in fig. 1 and 2, the food and drink exhaust gas is entered high by air inlet 3 Electrostatic plasma reactor 4 is pressed, wind speed air volume meter 1 and probe 2 are connected in the outside of air inlet 3, for controlling into one's intention as revealed in what one says Speed.
In further preferred embodiment, the food and drink exhaust gas passes through in high-pressure electrostatic plasma reactor 4 Gap 43 is separated off the larger drop of grain size, while the volatile organic compounds of Long carbon chain is fragmented into short carbon chain chemical combination Object;
The short carbon chain compound shrinks gas port 5 through first and enters microwave plasma reactor 6, is inhaled by adsorption column 62 Attached, the pollutant for then adsorbing adsorption column 62 under the action of microwave decomposes.
It is described by treated the gas of microwave plasma reactor 6 in embodiment still more preferably, pass through It is connected to the second of 6 side of microwave plasma reactor in turn and shrinks gas port 7, regulating valve 8 and expansion gas port 9, finally by arranging Gas port 11 is discharged.
Wherein, the exhaust process is controlled by smoke exhaust fan 10, and the lower end of exhaust outlet 11 is additionally provided with switch board 12.
In the present invention, using the phyletic evolution of above-mentioned purification food and drink exhaust gas treated food and drink exhaust gas, row can be reached Standard is put, air is directly discharged to.
Embodiment
The present invention is further described below by way of specific example, but these examples are only exemplary, not to this The protection domain of invention constitutes any restrictions.
Embodiment 1
(1) by a concentration of 40mg/m of VOC3Food and drink exhaust gas high-pressure electrostatic plasma reactor 4 is passed through by air inlet 3, Wherein, 48 electrode tubes 42 being arranged in parallel in the high-pressure electrostatic plasma reactor, setting direction is consistent with airflow direction, Inlet velocity is 8m/s, and voltage 12KV, exhaust gas is under the action of high-pressure electrostatic plasma reactor, oil gas drop therein More large-sized exhaust gas drop is pooled with steam drop, and then is removed.
Meanwhile the volatile organic compounds of Long carbon chain is broken off into the compound of short carbon chain, passes through the high-pressure electrostatic etc. Pressure drop after plasma reactor is 200Pa;
(2) compound of the short carbon chain after being detached by above-mentioned high-pressure electrostatic plasma reactor enters microwave plasma Reactor according 6, wherein 3 regular active carbon adsorption columns 62 are set in airflow direction in the microwave plasma reactor, Under the induction of microwave, the Strong oxdiative active specy catalytic degradation that the short carbon chain compound of absorption is generated, final gas is from row Gas port 11 is discharged.
Embodiment 2
Method therefor is similar to 1 method therefor of embodiment in the present embodiment, differs only in (1), the high-pressure electrostatic The inlet velocity of plasma reactor 4 be 15m/s, voltage 15KV, the food and drink exhaust gas by the high-pressure electrostatic etc. from Pressure drop after daughter reactor is 300Pa.
Comparative example
Comparative example 1
This comparative example method therefor is similar to 1 method therefor of embodiment, differs only in, in (1), the electrode tube Setting direction is vertical with airflow direction.
Comparative example 2
This comparative example method therefor is similar to 1 method therefor of embodiment, differs only in, in (2), the activated carbon Setting direction is vertical with airflow direction.
Experimental example
Experimental example 1
In statistical analysis embodiment 1,2 and comparative example 1,2, food and drink exhaust gas is handled through high-pressure electrostatic plasma reactor It removal rate after (abbreviation coagulation) and further goes after microwave plasma reactor handles (abbreviation two stage treatment) Except rate, the results are shown in Table 1, wherein
Concentration × 100% before removal rate=(concentration after concentration-processing before processing)/processing.
The removal rate of food and drink exhaust gas in 1 embodiment 1,2 of table and comparative example 1,2
It can be seen from the above, the coagulation removal rate of 1,2 pair of food and drink exhaust gas of embodiment 1,2 and comparative example is relatively low, passing through After crossing two-stage treatment, removal rate significantly improves, wherein after carrying out two-stage treatment to food and drink exhaust gas in embodiment 1,2 and comparative example 2 Removal rate reaches 85% or more, can be directly discharged to air.
And in comparative example 1, to food and drink exhaust gas, removal rate is 60.5% after two-stage treatment, is substantially less than embodiment 1,2 With comparative example 2, illustrate electrode tube direction being set as consistent with airflow direction, it can be more fully hereinafter to the drop in food and drink exhaust gas It carries out charged separation and organic compound Long carbon chain is made to fragment into short carbon chain micromolecular compound.
It is described the invention in detail above in association with detailed description and exemplary example, but these explanations are simultaneously It is not considered as limiting the invention.It will be appreciated by those skilled in the art that without departing from the spirit and scope of the invention, Can be with various equivalent substitutions, modifications or improvements are made to the technical scheme of the invention and its embodiments, these each fall within the present invention In the range of.

Claims (10)

1. a kind of method of purification food and drink exhaust gas, which is characterized in that this approach includes the following steps:
Step (1) carries out initial gross separation and preliminary exposition to food and drink exhaust gas, removes portion;
Step (2) is purified gas to treated that remaining food and drink exhaust gas carries out after-treatment through step (1).
2. the method for purification food and drink exhaust gas according to claim 1, which is characterized in that in step (1), the initial gross separation It is carried out in high-pressure electrostatic plasma reactor with preliminary exposition.
3. the method for purification food and drink exhaust gas according to claim 2, which is characterized in that described be initially separated into utilizes high pressure It discharges and charged separation is carried out to the exhaust gas drop of different-grain diameter in food and drink exhaust gas, and/or
The preliminary exposition is the compound that the Long carbon chain of volatile organic compounds in food and drink exhaust gas is fragmented into short carbon chain.
4. the method for purification food and drink exhaust gas according to claim 2, which is characterized in that the high-pressure electrostatic plasma is anti- Answer device to carry out separation and preliminary exposition to food and drink exhaust gas by being uniformly arranged on internal electrode tube, the quantity of the electrode tube by The decision of food and drink exhausted air quantity,
Preferably, the electrode tube is arranged in parallel, and the setting direction of the electrode tube is consistent with the direction of air-flow.
5. the method for purification food and drink exhaust gas according to claim 1, which is characterized in that in step (2), the residue food and drink The after-treatment of exhaust gas carries out in microwave plasma reactor, and the after-treatment includes being inhaled to remaining food and drink exhaust gas Echo second decomposition.
6. the method for purification food and drink exhaust gas according to claim 5, which is characterized in that the absorption is by being arranged micro- What the adsorption column in wave plasma reactor was realized, and/or
The second decomposition is to be decomposed the remaining food and drink exhaust gas that adsorption column adsorbs by microwave plasma.
7. it is according to claim 6 purification food and drink exhaust gas method, which is characterized in that the adsorption column have it is multiple, Setting direction is consistent with airflow direction.
8. the method for purification food and drink exhaust gas according to claim 7, which is characterized in that the adsorption column has regular knot Structure, preferably regular active carbon adsorption column.
9. a kind of system of purification food and drink exhaust gas, is preferred for implementing the purification food and drink exhaust gas side described in one of claim 1 to 8 The system of method, which is characterized in that the system comprises the high-pressure electrostatic plasma reactors (4) and microwave plasma of connection Reactor (6).
10. system according to claim 9, which is characterized in that the high-pressure electrostatic plasma reactor (4) includes height Electrostatic babinet (44) is pressed, is evenly arranged with electrode tube (42) in high-pressure electrostatic babinet (44), electrode tube (42) parallel connection is set It sets, and/or
The microwave plasma reactor (6) includes microwave enclosure (63), is evenly arranged in the microwave enclosure (63) Multiple adsorption columns (62), for adsorbing remaining food and drink exhaust gas.
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN111679006A (en) * 2020-06-15 2020-09-18 镇江生态环境科技咨询中心 Plasma secondary degradation performance analysis system and analysis method
CN113941210A (en) * 2020-07-17 2022-01-18 陕西青朗万城环保科技有限公司 Waste gas treatment method and control system thereof

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