CN206688519U - Gas handling system - Google Patents

Gas handling system Download PDF

Info

Publication number
CN206688519U
CN206688519U CN201720201437.0U CN201720201437U CN206688519U CN 206688519 U CN206688519 U CN 206688519U CN 201720201437 U CN201720201437 U CN 201720201437U CN 206688519 U CN206688519 U CN 206688519U
Authority
CN
China
Prior art keywords
gas
catalyst
plasma
handling system
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201720201437.0U
Other languages
Chinese (zh)
Inventor
郑惠文
刘雨皓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bay Environmental Technology Beijing Corp
Original Assignee
Bay Environmental Technology Beijing Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bay Environmental Technology Beijing Corp filed Critical Bay Environmental Technology Beijing Corp
Priority to CN201720201437.0U priority Critical patent/CN206688519U/en
Application granted granted Critical
Publication of CN206688519U publication Critical patent/CN206688519U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Treating Waste Gases (AREA)
  • Catalysts (AREA)

Abstract

The utility model discloses a kind of gas handling system, and for handling VOC and nitrogen oxides in pending gas, it includes：Mixed cell, for receiving the pending gas and being mixed with the first catalyst；First catalysis and activation unit, for removing at least a portion VOC in the presence of plasma and first catalyst, and the nitrogen oxides is activated in the presence of plasma；And second catalyst unit, for reduction at least a portion nitrogen oxides in the presence of the second catalyst, wherein, the mixed cell, first catalysis and activation unit, second catalyst unit are sequentially connected in series so that second catalyst unit receives the activated nitrogen oxides.The gas handling system can be handled most important pollutant VOC and nitrogen oxides in pending gas simultaneously, can remove common various peculiar smell, processing is thorough, the generation of non-secondary pollution.

Description

Gas handling system
Technical field
Gas pollutant process field is the utility model is related to, relates more specifically to a kind of gas handling system.
Background technology
Industrial waste gas is the gas containing pollutant caused by fuel combustion and other industrial product process procedures, not only There is harm to the health of human body, animals and plants, also have negative effect to weather and weather.Processing to the gas containing pollutant, It is the topic for needing to take seriously in human being's production life activity.
Caused industrial waste gas component is complex in actual chemical industry production, wherein main pollutant is volatility Organic compound (VOC) and nitrogen oxides (NOX).In the prior art, it is single to VOC in industrial waste gas to remove and to wherein NOXThe process of single removal has reached its maturity, such as includes absorption method, condensation method, life for VOC gas processing method Thing embrane method, thermal oxidation method, Production by Catalytic Combustion Process etc., for NOXGas processing method include SNCR method (SNCR), selective catalytic reduction (SCR) etc..
Plasma be it is a kind of be deprived of by part electronics after atom and atomic group be ionized after caused by negative ions The ionized gas shape material of composition.Plasma is generally obtained by ionizing in the electric field by gas to be excited, with big The active group of amount, these active groups can ultimately produce CO with the VOC component reactions in industrial waste gas2And H2O, thus it is existing Can also be using plasma to the VOC processing in industrial waste gas in technology.
However, existing plasma can only be in the waste gas of low concentration Wind Volume to the technologies handled of VOC in industrial waste gas There is preferable efficiency in processing, and can only single removal VOC and such as NO can not be removedXDeng pollutant.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of gas handling system, can improve to being waved in gas The treatment effeciency of hair property organic compound, can also remove at least part nitrogen oxides in gas.
According to a kind of gas handling system provided by the utility model, for handling the volatile organic in pending gas Compound and nitrogen oxides, including：Mixed cell, for receiving the pending gas and being mixed with the first catalyst；First Catalysis and activation unit, for removing at least a portion volatility in the presence of plasma and first catalyst Organic compound, and the nitrogen oxides is activated in the presence of plasma；And second catalyst unit, for second Reduction at least a portion nitrogen oxides in the presence of catalyst, wherein, the mixed cell, first catalysis and activation Unit, second catalyst unit are sequentially connected in series so that second catalyst unit receives the activated nitrogen oxides.
Preferably, first catalysis and activation unit include being connected to the mixed cell and second catalyst unit Between the first reaction chamber and be connected to the plasma generator of the first reaction chamber side, the plasma occurs Device produces plasma and is injected into first reaction chamber.
Preferably, first catalysis and activation unit also include the clarifier being connected with the plasma generator, Gas to be excited is changed into plasma after the purification utensil into the plasma generator.
Preferably, the air inflow of the gas to be excited accounts for the 0.5% to 2% of the air inflow of the pending gas.
Preferably, the plasma generator produces low temperature plasma.
Preferably, the plasma generator is glow discharge device, corona discharge assembly, dielectric barrier discharge dress Put, one of radio frequency discharge device, microwave discharge device.
Preferably, the gas handling system also includes being connected to the filter element before the mixed cell, with filtering The pending gas.
Preferably, the honeycomb ceramic carrier of the filler containing cordierite is provided with the filter element.
Preferably, the gas handling system also includes being connected to first catalysis and activation unit is urged with described second Change the light provocative reaction unit between unit, waved for being removed under the plasma and illumination effect described at least a portion Hair property organic compound.
Preferably, the smooth provocative reaction unit includes being connected to first catalysis and activation unit is urged with described second Change the second reaction chamber between unit and be arranged on multigroup exciter of the second reaction chamber side, multigroup exciter The light of a variety of wave bands is sent into second reaction chamber.
According to gas handling system of the present utility model, mixed cell, the first catalysis and activation unit, the second catalyst unit It is sequentially connected in series, wherein, mixed cell mixes the first catalyst into pending gas so that pending gas is without heating, humidification It can be reacted Deng pretreating process in the first catalysis and activation unit with plasma, and in the catalysis of the first catalyst Lower plasma improves to the treatment effeciency of VOC, even if ensureing to VOC containing high concentration Pending gas treatment effeciency it is also higher.Meanwhile the nitrogen oxides in pending gas is plasma-activated so that pending After gas enters the second catalyst unit, activated nitrogen oxides is easier to be reduced to nitrogen under the catalysis of the second catalyst, Realize the processing to the nitrogen oxides higher efficiency in pending gas.
Gas handling system of the present utility model can be to most important pollutant VOC in pending gas Handled simultaneously with nitrogen oxides, can remove common various peculiar smell, processing is thorough, the generation of non-secondary pollution.
In a preferred embodiment, plasma generator produces low temperature plasma so that the activation of the first catalyst Performance will not change, and a large amount of excited species that plasma carries can make catalyst form more active centres so as to remove More VOCs.Gas handling system can also include being connected to the light after the first catalysis and activation unit Provocative reaction unit, the unit can act synergistically with the first catalysis and activation unit so that pending gas is in plasma and light According to collective effect under further improve remove VOC efficiency.
Brief description of the drawings
By the description to the utility model embodiment referring to the drawings, of the present utility model above-mentioned and other mesh , feature and advantage will be apparent from.
Fig. 1 shows the stereogram of the gas handling system according to the utility model embodiment；
Fig. 2 shows the sectional view of the gas handling system according to the utility model embodiment；
Fig. 3 shows the flow chart of the gas processing method according to the utility model embodiment.
Embodiment
The utility model is more fully described hereinafter with reference to accompanying drawing.In various figures, identical element is using similar Reference represent.For the sake of clarity, the various pieces in accompanying drawing are not necessarily to scale.In addition, may in figure Some known parts are not shown.
It describe hereinafter many specific details of the present utility model, such as the structure of part, material, size, place Science and engineering skill and technology, to be more clearly understood that the utility model.But just as the skilled person will understand, The utility model can not be realized according to these specific details.
It should be noted that hereinafter, similar to " A is connected between B and C ", " A is connected to before C ", " A is connected to After B " etc. term, can represent A be connected directly between B and C, A be directly connected to before C, A be connected directly between after B, Can be that other units or device are also associated between A and B or A and C, wherein " before ", " afterwards " represent pending respectively Upstream and downstream on flow of air direction.
Fig. 1 and Fig. 2 shows the stereogram and sectional view of the gas handling system according to the utility model embodiment, arrow in figure Head shows the flow direction of pending gas.The gas handling system is used to handle the VOC in pending gas And nitrogen oxides (NO (VOC)X), including the catalysis of mixed cell 120, first being sequentially connected in series and activation unit 130 and second Catalyst unit 160.Mixed cell 120 is used to receive the pending gas and mix with the first catalyst；
First catalysis and activation unit 130 are used to remove in the presence of plasma and the first catalyst in pending gas At least a portion VOC, and activate in the presence of plasma the NO in pending gasX；Second catalyst unit 160 is used for At least a portion NO in pending gas is reduced in the presence of the second catalystX.Wherein in the present embodiment, the first catalyst E.g. manganese dioxide-aluminum oxide (MnO2-Al2O3) catalyst, the second catalyst is, for example, copper-loaded ZSM-5 molecular sieve (Cu- ZSM-5) catalyst, it is to be understood that the selection of catalyst can be not limited to the example above, can play identical catalytic action Catalyst can be applied in the utility model.
First catalysis and activation unit 130 include first be connected between the catalyst unit 160 of mixed cell 120 and second Reaction chamber 131 and the plasma generator 132 for being connected to the side of the first reaction chamber 131, plasma generator 132 produce Plasma is simultaneously injected into the first reaction chamber 131.
Further, the first catalysis and activation unit 130 also include the clarifier being connected with plasma generator 132 133, gas to be excited is changed into plasma after the purification of clarifier 133 into plasma generator 132.Wherein wait to swash Get angry body air inflow can account for pending gas air inflow 0.5% to 2%, preferably 1%.Gas to be excited can be empty Gas, ozone etc..
It is preferred that plasma generator 132 produces low temperature plasma, the plasma generator 132 can be that aura is put Any one of electric installation, corona discharge assembly, dielectric barrier discharge device, radio frequency discharge device, microwave discharge device.By Low temperature plasma is produced in plasma generator 132 so that the activity function of the first catalyst will not change, plasma The a large amount of excited species carried can make the first catalyst form more active centres so as to remove more VOC.
The gas handling system of the utility model embodiment also includes being connected to the filter element before mixed cell 120 110, to filter the pending gas.The honeycomb ceramic carrier of the filler containing cordierite, the honeycomb are wherein provided with filter element 110 Ceramic monolith can be wall-flow type honeycomb ceramic carrier, contain silica (SiO in cordierite2) and magnesia (MgO) etc..
The gas handling system of the utility model embodiment can also include be connected to the first catalysis and activation unit 130 and Light provocative reaction unit 140 and fixed-bed catalytic unit 150 between second catalyst unit 160, wherein light excite instead Unit 140 is answered to be connected to after the first catalysis and activation unit 130, fixed-bed catalytic unit 150 is connected to light provocative reaction list After member 140.Pending gas removes at least one when passing through light provocative reaction unit 140 in the presence of plasma and illumination Divide VOC.Light provocative reaction unit can include being connected between the first catalysis and the catalyst unit 160 of activation unit 130 and second The second reaction chamber 141 and be arranged on multigroup exciter 142 of the side of the second reaction chamber 141, multigroup exciter 142 to second The light of a variety of wave bands is sent in reaction chamber 141, preferably multigroup exciter 142 forms full spectrum exciter, can excite continuous light Spectrum, has broad spectrum activity for exhaust gas constituents.The highdensity light of continuous spectrum, it is possible to so that molecule is in same time, in succession absorption More than one photon, thus in the presence of a direct ionization mechanism.Basic process in light provocative reaction unit 140 is anti-for chain Should, the reaction of three classes is generally comprised, i.e. chain initiation reaction, free radical transfer reaction and chain termination reaction, the process is suitably being joined With under thing ratio, being excited by appropriate power, acted synergistically with the first catalysis and activation unit, further improve and remove VOC's Efficiency.Pending gas can reach 99% VOC removal efficiency under plasma and the synergy of illumination in the present embodiment. Fixed-bed catalytic unit 150 is located between light provocative reaction unit 140 and the second catalyst unit 160, catalyst layer institute therein The catalyst filled out can be with the catalyst of identical first in mixed cell 120, other catalyst can also be inserted as needed.
According to gas handling system of the present utility model, the connection mixing respectively before and after the first catalysis and activation unit 130 Unit 120, the second catalyst unit 160, wherein, mixed cell 120 mixes the first catalyst into pending gas so that waits to locate Qi-regulating can be reacted without pretreating process such as heating, humidifications in the first catalysis and activation unit 130 with plasma, And plasma improves to VOC treatment effeciency under the catalysis of the first catalyst, even if ensureing to the pending of high concentration VOC The treatment effeciency of gas is also higher.Meanwhile the NO in pending gasXIt is plasma-activated so that pending gas is urged into second After changing unit 160, activated NOXIt is easier to be reduced to harmless nitrogen (N under the catalysis of the second catalyst2), realization pair NO in pending gasXThe processing of higher efficiency.
The gas handling system of corresponding above-described embodiment, a kind of gas processing method presented below.
Fig. 3 shows the flow chart of the gas processing method of the utility model embodiment, gas processing method in the present embodiment Including step S101 to step S105.
Step S101 is filtration step, wherein being filtered to the pending gas.
Step S102 is blend step, wherein the pending gas is mixed with the first catalyst, in the present embodiment One catalyst is, for example, MnO2-Al2O3Catalyst.
Step S103 is the first catalysis and activation step, wherein pending gas is in plasma and first catalyst In the presence of remove at least a portion VOC, and in the presence of the plasma described in activation Nitrogen oxides.Further, plasma can be for low temperature plasma so that the activity function of the first catalyst will not be because High temperature changes, and so as to more stable, a large amount of excited species that plasma carries can make the first catalyst form more work Change center is so as to removing more VOC.
After step s 103, step S104 can also be included, the step is light provocative reaction step, wherein pending gas Under the plasma and the synergy of illumination, the effect for removing the VOC can be further improved Rate.Further, in step S104, illumination can be carried out by the light of a variety of wave bands, had hence for exhaust gas constituents Broad spectrum activity.Step S104 basic process is chain reaction, generally comprises the reaction of three classes, i.e. chain initiation reaction, free radical transmits anti- Should and chain termination reaction, the process suitably participate in thing ratio under, excited by appropriate power, work cooperateed with step S103 With further raising removes VOC efficiency.
Then in step S105, the second catalysis is carried out, wherein being reduced in the presence of the second catalyst in pending gas The activated nitrogen oxides of at least a portion, is translated into harmless nitrogen.Second catalyst example in the present embodiment Cu-ZSM-5 catalyst in this way.
Gas handling system of the present utility model and method can be to most important pollutant VOC and NO in pending gasXTogether When handle, and by introducing the first catalyst and the second catalyst, the treatment effeciency to above two pollutant can be improved. Gas handling system of the present utility model and method can remove common various peculiar smell, and processing is thorough, the generation of non-secondary pollution.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that Other identical element also be present in process, method, article or equipment including the key element.
According to embodiment of the present utility model as described above, these embodiments do not have all details of detailed descriptionthe, Also it is only described specific embodiment not limit the utility model.Obviously, as described above, many modification and change can be made Change.This specification is chosen and specifically describes these embodiments, is to preferably explain that principle of the present utility model and reality should With so that skilled artisan can repairing using the utility model and on the basis of the utility model well Change use.The utility model is only limited by claims and its four corner and equivalent.

Claims (10)

  1. A kind of 1. gas handling system, for handling VOC and nitrogen oxides in pending gas, its feature It is, including：
    Mixed cell, for receiving the pending gas and being mixed with the first catalyst；
    First catalysis and activation unit, for removing at least a portion institute in the presence of plasma and first catalyst VOC is stated, and the nitrogen oxides is activated in the presence of plasma；And
    Second catalyst unit, for reducing at least a portion nitrogen oxides in the presence of the second catalyst,
    Wherein, the mixed cell, first catalysis and activation unit, second catalyst unit are sequentially connected in series so that institute State the second catalyst unit and receive the activated nitrogen oxides.
  2. 2. gas handling system according to claim 1, it is characterised in that first catalysis and activation unit include connecting The first reaction chamber for being connected between the mixed cell and second catalyst unit and it is connected to the first reaction chamber side The plasma generator in face, the plasma generator produce plasma and are injected into first reaction chamber.
  3. 3. gas handling system according to claim 2, it is characterised in that first catalysis and activation unit also include The clarifier being connected with the plasma generator, gas to be excited enter the plasma after the purification utensil Body generator is changed into plasma.
  4. 4. gas handling system according to claim 3, it is characterised in that the air inflow of the gas to be excited accounts for described The 0.5% to 2% of the air inflow of pending gas.
  5. 5. gas handling system according to claim 2, it is characterised in that the plasma generator produces low temperature etc. Gas ions.
  6. 6. gas handling system according to claim 5, it is characterised in that the plasma generator is glow discharge One of device, corona discharge assembly, dielectric barrier discharge device, radio frequency discharge device, microwave discharge device.
  7. 7. gas handling system according to claim 1, it is characterised in that also include being connected to before the mixed cell Filter element, to filter the pending gas.
  8. 8. gas handling system according to claim 7, it is characterised in that be provided with the filter element and filled out containing cordierite The honeycomb ceramic carrier of material.
  9. 9. gas handling system according to claim 1, it is characterised in that also include being connected to first catalysis and live Change the light provocative reaction unit between unit and second catalyst unit, for going down in the plasma and illumination effect Except at least a portion VOC.
  10. 10. gas handling system according to claim 9, it is characterised in that the smooth provocative reaction unit includes connection In the described first catalysis and the second reaction chamber between activation unit and second catalyst unit and it is arranged on described second Multigroup exciter of reaction chamber side, multigroup exciter send the light of a variety of wave bands into second reaction chamber.
CN201720201437.0U 2017-03-02 2017-03-02 Gas handling system Active CN206688519U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720201437.0U CN206688519U (en) 2017-03-02 2017-03-02 Gas handling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720201437.0U CN206688519U (en) 2017-03-02 2017-03-02 Gas handling system

Publications (1)

Publication Number Publication Date
CN206688519U true CN206688519U (en) 2017-12-01

Family

ID=60442389

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720201437.0U Active CN206688519U (en) 2017-03-02 2017-03-02 Gas handling system

Country Status (1)

Country Link
CN (1) CN206688519U (en)

Similar Documents

Publication Publication Date Title
Talebizadeh et al. The role of non-thermal plasma technique in NOx treatment: A review
CN101832168B (en) Integral reactor of dielectric barrier discharge coupling catalyst for removing NOx in diesel engine
CN104888806B (en) A kind of regeneration method that inactivation vanadium titanium-based Faveolate denitration catalyst combined denitration demercuration is modified
CN109268851B (en) Method and equipment for treating VOCs gas by microwave-driven electrodeless ultraviolet combined catalytic combustion
CN105797579A (en) Technology for catalytically treating VOCs by means of synergy between plasma and mesoporous
CN203189089U (en) Automobile exhaust processing unit
CN101219338B (en) Automobile tail gas purifier of low-temperature plasma body
CN107754810B (en) A kind of wide temperature smoke denitrating catalyst of non-vanadium base monolithic, preparation method and application
CN103100303A (en) Electric catalyst tube for controlling exhaust emission
CN103372373A (en) Denitration and purification method of catalytic cracking regenerated flue gas
CN1748836A (en) Organic waste gas purifying processing device
Guo et al. Study on the Performance of NTP with Wood Fiber in NO Removal
CN206688519U (en) Gas handling system
CN107288720A (en) The high exhaust purifier of discharge standard
CN106955585A (en) Gas processing method and system
Srinivasan et al. Nonthermal-Plasma-Promoted Catalysis for the Removal of $\hbox {NO} _ {\rm x} $ From a Stationary Diesel-Engine Exhaust
CN2683236Y (en) High-frequency discharge catalytic decomposition device for organic pollutant
KR100464167B1 (en) Multi layer non-thermal plasma/catalyst reactor
CN108114571A (en) A kind of system and method for handling large-wind-volume low-concentration mixing pernicious gas
KR100454427B1 (en) Harmful gas purifying apparatus and thereof method by using microwave
CN2817959Y (en) Organic waste gas purifier
CN204107280U (en) Boiler chemical industry waste gas from incinerator one purifier
RU2286201C2 (en) Method of purification of the gas outbursts and the device for its realization
CN103480271A (en) Smoke treatment method
KR100593403B1 (en) Nitrogen oxide treatment device for exhaust gas and treatment method thereof

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant