CN209060900U - A kind of emission-control equipment - Google Patents

Abstract

The utility model discloses a kind of emission-control equipments, including shell, air inlet, preposition treatment region, redox area and gas outlet, shell one end is provided with air inlet, the other end is provided with gas outlet, is divided into preposition treatment region and redox area in shell, and preposition treatment region is provided with UV ultraviolet lamp pipe and photo-catalytic filtering screen, and preposition treatment region is divided into photodissociation area and photoelectric effect chain reaction area, the emission-control equipment of the utility model, with small in size, the advantages that energy conservation, good purification.

Description

A kind of emission-control equipment

Technical field

The utility model relates to refuse depot technical field of waste gas treatment, and in particular to a kind of emission-control equipment.

Background technique

Garbage transfer station usually stacks a large amount of house refuse and industrial refuse, these rubbish can generate a large amount of exhaust gas, These exhaust gas are evaporate into air, and not only the smell is awful, and portion is toxic and harmful gas, these toxic and harmful gas Main component be volatile organic compounds (Volatileo anieeompounds, VOCs), such as aromatic hydrocarbon, halogenated hydrocarbons, contain The rivers such as oxygen hydrocarbon can be further divided into 8 classes: alkanes, aromatic hydrocarbons, alkenes, halohydrocarbon, aldehyde by volatile organic compounds chemical structure Class, ketone and other compounds, these VOCs can not only pollute air, but also can be detrimental to health, and some of which is even With carcinogenic, teratogenesis, mutagenesis, wherein at least there are ten several to be put into US Gov Env Protection Agency and country, China ring The priority monitoring substance register that border protects general bureau to determine.

The existing exhaust gas treatment technology for refuse depot common are condensation method, absorption method and Production by Catalytic Combustion Process, wherein Condensation method is the temperature by reducing saturation VOCs gas, is separated from gas after condensing VOCs foul gas.But condensation method It generally requires and adsorbs, burn and other waste gas purification processing means are used in combination, to recycle valuable gas.Absorption method point For rubbish waste gas processing methods such as physisorphtion, dipping adsorbent absorption methods.Using absorption method, waste gas treatment equipment volume Greatly, process is complicated, and when having micelle substance or other impurities in rubbish exhaust gas, adsorbent is vulnerable, and exhaust-gas treatment is not thorough.It urges Changing combustion method is to make 300~450 DEG C of oxygenolysis of pernicious gas temperature using catalyst, to save fuel, but is catalyzed burning The shortcomings that method is that oxygenolysis temperature is higher, and high temperature causes pipeline, equipment to be easily broken, and in addition catalyst price is higher, And it requires in exhaust gas without the ingredient for leading to catalyst inactivation.

In addition, in the prior art, application No. is 201721894779.1 utility model, to disclose a kind of integral type compound Photocatalysis plasma off-gas cleaning equipment needs multiple groups quartz burner, and disadvantage is that occupied space is big, and power consumption is big, simultaneously Due to there was only light-catalysed effect, energy conversion efficiency is low.

Utility model content

In view of the deficiencies of the prior art, the purpose of this utility model is to provide a kind of can be used alone, structures to close Reason, good purification, a kind of emission-control equipment with long service life.

To achieve the above object, the utility model provides the following technical solutions:

A kind of emission-control equipment, including shell, shell one end are provided with air inlet, and the other end is provided with gas outlet, shell It is divided into preposition treatment region and redox area in vivo；Preposition treatment region one end is close to air inlet, the other end and redox area One end is adjacent, and for the other end in redox area close to gas outlet, preposition treatment region is provided with UV ultraviolet lamp pipe；UV ultraviolet lamp The partial denudation close to air inlet is managed, for generating ozone；UV ultraviolet lamp pipe is partially covered at least one far from air inlet Layer photo-catalytic filtering screen, photo-catalytic filtering screen are made of filter screen and the photocatalyst being applied on filter screen；The setting of redox area There is oxidation reduction catalyst.

Further, photocatalyst is one kind of nano-titanium dioxide, nano zine oxide, nano cupric oxide and nano phase ag_2 o Or it is a variety of, photo-catalytic filtering screen covers on UV ultraviolet lamp pipe circumferencial direction for part, and redox area is equipped at least one Porous catalyst block, oxidation reduction catalyst are applied on catalyst block.

Further, photo-catalytic filtering screen is two layers or three layers.

Further, UV ultraviolet lamp pipe accounts for UV ultraviolet lamp by the length of photo-catalytic filtering screen covering part in the axial direction It is ultraviolet by photo-catalytic filtering screen overlay length to account for UV on the circumference of UV ultraviolet lamp pipe by the 60%-80% of the axial upper total length of pipe The 60%-80% of line tube circumference total length.

Further, the material of catalyst block is activated carbon, cordierite or mullite, and oxidation reduction catalyst is mainly transition Metal.

Further, transition metal is platinum, palladium, copper, two or more in manganese.

Further, oxidation reduction catalyst further includes di-iron trioxide.

Further, oxidation reduction catalyst further includes copper oxide, manganese oxide and zinc oxide, and three's mass ratio is 1:8:1.

Further, redox area is additionally provided with multiple activated alumina beads, and activated alumina bead surface is also coated with Reductant-oxidant.

Further, it is equipped with fan at air inlet and air outlet at least one, is equipped with dustproof filter screen at air inlet.

Further, preposition treatment region and redox area are serial setting or parallel setting, parallel when setting, preposition place Managing has partition among area and redox area.

Compared with prior art, the utility model has the beneficial effects that have the advantages that small in size, low energy consumption, the service life is long, It can effectively solve that emission-control equipment reaction temperature in the prior art is excessively high, and energy consumption is excessively high, the exceeded problem of ozone, while can More thoroughly toxic and harmful gas to be aoxidized, the final product of generation such as hydrogen peroxide, negative oxygen ion O2- and hydroxyl It can be used as purification factor, the environment in or around garbage transfer station station can be improved.

Detailed description of the invention

Fig. 1 is that a kind of emission-control equipment of the utility model first embodiment opens the top view after cover board.

Fig. 2 is that a kind of emission-control equipment of the utility model first embodiment opens the perspective view after cover board.

Fig. 3 is the left view enlarged drawing for covering the UV ultraviolet lamp pipe of photo-catalytic filtering screen in Fig. 1 at M.

Fig. 4 is that a kind of emission-control equipment of the utility model second embodiment opens the top view after cover board.

Fig. 5 is that a kind of emission-control equipment of the utility model second embodiment opens the perspective view after cover board.

Wherein: air inlet 1, preposition treatment region 2, photodissociation area 21, photoelectric effect chain reaction area 22, UV ultraviolet lamp pipe 23, photo-catalytic filtering screen 24, redox area 3, catalyst block 31, gas outlet 4, fan 5, fan 6, cover board 7, partition 8.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Embodiment 1:

Please refer to Fig. 1~3, in the utility model embodiment, a kind of emission-control equipment, including shell, shell is by cover board 7 It is formed with holding part 9, air inlet 1 (being used as exhaust gas inlet port), preposition treatment region 2, redox area 3 is disposed in shell With gas outlet 4 (being used as outlet port), preposition treatment region is provided with UV ultraviolet lamp pipe 23, and UV ultraviolet lamp pipe 23 is close The partial denudation of air inlet 1, for generating ozone；UV ultraviolet lamp pipe 23 is partially covered with photocatalyst mistake far from air inlet 1 Strainer 24, photo-catalytic filtering screen 24 are made of filter screen and the photocatalyst being applied on filter screen, and photocatalyst is used as photocatalysis Agent, and filter screen is used as the carrier of photocatalyst；Redox area 3 is provided with oxidation reduction catalyst.

Wherein, UV ultraviolet lamp pipe 23 can be one, or multiple (being not shown in Fig. 1~3), to adapt to difference Waste gas purification scene requirement, a UV ultraviolet lamp pipe, discharge amount of exhaust gas is used only in such as the lesser place of discharge amount of exhaust gas Biggish place uses 2 or 2 or more UV ultraviolet lamp pipes.

Oxygen atom is generated since the energy of the ultraviolet light less than 240nm can just dissociate oxygen molecule, oxygen atom is again and oxygen Molecule, which combines, generates ozone, therefore the luminescence spectrum of UV ultraviolet lamp pipe 23 is less than 240nm, for example, UV ultraviolet lamp pipe 23 can be with For the UV ultraviolet lamp pipe of 185nm.

Wherein, the part for the UV ultraviolet lamp pipe 23 not covered by photo-catalytic filtering screen 24 forms photodissociation area 21, and UV is ultraviolet Part and photo-catalytic filtering screen 24 of the line fluorescent tube 23 far from air inlet collectively form photoelectric effect chain reaction area.

In photodissociation area 21, the photon in UV ultraviolet beam generated by UV ultraviolet lamp pipe 23 decomposes the oxygen in air Molecule generates free oxygen, and positron-electron imbalance entrained by free oxygen need to be in conjunction with oxygen molecule, and then generates ozone；Meanwhile UV UV photons energy with the molecular link of cracking section VOCS (volatile organic compounds) or can make part VOCS (volatility has Machine compound) molecular binding loose, be oxidized easily it.In photodissociation area 21, part ozone can be reacted with part VOCS, CO2 and water are generated, i.e., in photodissociation area, part VOCS is decomposed, so that stink is desalinated.

Photo-catalytic filtering screen 24 is made of filter screen and the photocatalyst being applied on filter screen, and photocatalyst is coated on filter screen It is for the contact area of photocatalyst and UV ultraviolet beam, to more preferably realize the photocatalysis efficiency of photocatalyst.

Photocatalyst can be one in nano-titanium dioxide, nano zine oxide, nano cupric oxide and nano phase ag_2 o etc. Kind is a variety of；Wherein, nano-titanium dioxide has many advantages, such as that oxidability is strong, chemical property stablize it is nontoxic, as photochemical catalyst It is widely used；Nano zine oxide has price low, and the higher advantage of photocatalytic activity is that level of application is only second to nano-silica Change the photochemical catalyst of titanium；In addition, the forbidden bandwidth of nano zine oxide, nano-titanium dioxide, nano phase ag_2 o and nano cupric oxide Successively reduce, it is different since the forbidden bandwidth of every kind of photocatalyst varies when using above-mentioned a variety of photocatalysts, relatively For single photocatalyst, photocatalysis performance is more preferable.

In photoelectric effect chain reaction area 22, the photocatalyst being coated on photo-catalytic filtering screen 24 shines by UV ultraviolet lamp Shell intracorporal hydrone is excited into the hydroxyl free radical of great oxidability, and it is active to convert the oxygen to chemical property when penetrating Negative oxygen ion O2-, also, generate negative oxygen ion O2- outer-shell electron movement, constantly collision in other words attack VOCS in Macromolecular, the macromolecular in VOCS, which is collided or attacked, becomes small molecule, while the outer-shell electron of negative oxygen ion O2- is to VOCS The molecular link of (volatile organic compounds) is bombarded, so that the molecular link for the VOCS not being degraded in photodissociation area is looser Change, makes it easier to be oxidized.

Tail end in photoelectric effect chain reaction area 22, is provided with redox area 3, and redox area 3 includes at least one A to have porous catalyst block, oxidation reduction catalyst is applied to the surface (comprising hole surface) of catalyst block, and the effect of catalyst block is The carrier of oxidation reduction catalyst, to increase the surface area of catalyst or equal to the dosage for increasing catalyst, with more preferable Ground promotes redox reaction, aoxidizes additionally, due to by the fuel gas in exhaust gas, and the heat of generation is present in catalyst block, further Accelerate oxidation course.

Wherein, photo-catalytic filtering screen 24 can be one layer, or multilayer, for example, photo-catalytic filtering screen 24 be two layers or Three layers, compared with one of for layer, the surface area of two layers or three layers of photo-catalytic filtering screen 24 is bigger, can receive more UV ultraviolet lights The light beam that fluorescent tube 23 issues, so that photocatalysis efficiency is more preferable.

Photo-catalytic filtering screen 24 can be completely covered on the circumference of UV ultraviolet lamp pipe 23, can also partially cover.Portion When dividing covering, i.e., the UV ultraviolet lamp part not covered by photo-catalytic filtering screen 24 in photoelectric effect chain reaction area 22, with light The effect for solving the UV ultraviolet lamp part at area 21 is identical, can continue to generate ozone, can be for oxidation also compared with being completely covered Former area provides more sufficient ozone.Fig. 3 shows photo-catalytic filtering screen 24 (two layers) on the circumference of UV ultraviolet lamp pipe 23 The case where not being completely covered, it is preferable that the overlay length A on the circumference of UV ultraviolet lamp pipe 23 of photo-catalytic filtering screen 24 accounts for UV purple The 60%-80% of 23 circumference total length (A+B) of outside line fluorescent tube.

Preferably, the overlay length in the axial direction of UV ultraviolet lamp pipe 23 of photo-catalytic filtering screen 24 accounts for UV ultraviolet lamp pipe 23 The 60%-80% of length, in this way, UV ultraviolet lamp pipe 23 completely uncovered 20%~40% is located at photodissociation area, it is such Coating ratio effect is preferable.

Wherein, the material of catalyst block can be activated carbon, but due to activated carbon chemical property wave more living, easily with oxidation Reducing agent reaction, can be replaced, effect is more preferable with the cordierite of stable chemical performance or mullite.

Point in redox area 3, in the active ozone of chemical property, negative oxygen ion O2- and hydroxyl free radical and exhaust gas The loose VOCS (volatile organic compounds) of sub (most of is small molecule) and bond is catalyzed in oxidation reduction catalyst etc. Lower carry out redox reaction generates oxygen, carbon dioxide, oxyhydroxide (such as water, hydrogen peroxide etc.), oxide (example Such as sulfur dioxide), ozone, negative oxygen ion O2- etc., corresponding space is discharged to by gas outlet 4, hydrogen peroxide therein, Negative oxygen ion O2- and hydroxyl can be used as purification factor, further improve the environment in or around garbage transfer station station.

Wherein, oxidation reduction catalyst can be any two or the two or more transition in platinum, palladium, copper, manganese etc. Metal can further decrease oxidation also using two or more transition metal compared to a kind of transition metal is only used The reflecting point of original reaction, so that the temperature for controlling redox area 3 is not too high.

For the sulfide (hydrogen sulfide, methyl mercaptan etc.) gone in removing exhaust gas, oxidation reduction catalyst further includes three oxidations two Iron.

Particularly, in order to reduce the ozone of the discharge of gas outlet 4 and the content of hydrogen peroxide, oxidation reduction catalyst further includes Copper oxide, manganese oxide and zinc oxide, it is preferable that copper oxide, manganese oxide, zinc oxide three's mass ratio are 1:8:1.By using oxygen Change copper, manganese oxide and zinc oxide, it is completely harmless to human body by ozone, hydrogen-peroxide reduction at oxygen and water.

Preferably, redox area 3 is additionally provided with multiple activated alumina bead (not shown)s, activated alumina bead Surface is coated with reductant-oxidant, carrier of the alumina globule as reductant-oxidant, has a large specific surface area, high mechanical strength, The advantages such as price is low, can further increase exhaust gas in the extent of reaction in redox area 3, reach better clean-up effect.

Preferably, be provided at air inlet 1 at fan 5 or gas outlet 4 and be provided with fan 6, alternatively, at air inlet 1, outlet Fan 5, fan 6 are respectively arranged at mouth 4, fan 5 is arranged then for being evacuated in air inlet 1, and exhaust gas is easier to be collected at exhaust gas It manages in device, fan 6 is arranged for being vented in air inlet 4, and gas after treatment is easier to be discharged into air by fan 6 In.

Preferably, be additionally provided with dustproof filter screen (not shown) at air inlet 1, for obstruct dust in exhaust gas or other Biggish solid particle, to prevent in exhaust gas dust or other biggish solid particles fall in UV ultraviolet lamp tube or other component On, influence exhaust-gas treatment effect.

Embodiment 2:

Fig. 4~5 are please referred to, the utility model embodiment on the basis of embodiment 1, is setting a kind of emission-control equipment It sets and is changed, specifically, in embodiment 1, a kind of preposition treatment region 2 of emission-control equipment and redox area 3 are Serial setting, and in embodiment 2, a kind of preposition treatment region 2 of emission-control equipment and redox area 3 are parallel setting, real It applies in example 2, there is partition 8 among preposition treatment region 2 and redox area 3, be used for preposition treatment region 2 and redox area 3 It distinguishes, compared with Example 1, a kind of emission-control equipment length of embodiment 2 is shorter, and width is wider, is applicable to need Will shorter wider emission-control equipment occasion.

The emission-control equipment of the utility model generates ozone by photodissociation area, photoelectric effect chain reaction area mainly produces Raw hydroxyl free radical and negative oxygen ion O2-, and above-mentioned ozone, hydroxyl free radical and negative oxygen ion O2- are mainly in redox Redox reaction occurs for area and exhaust gas (predominantly VOCs), progressive, all linked with one another, reduces the body of emission-control equipment Product, the cost for reducing emission-control equipment are low, while achieving the purpose that preferably waste gas decomposition, realization air cleaning.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (9)

1. a kind of emission-control equipment, including shell, shell one end is provided with air inlet, and the other end is provided with gas outlet, special Sign is, preposition treatment region and redox area are divided into shell；Described preposition treatment region one end close to air inlet, the other end with The one end in the redox area is adjacent, and the other end in the redox area is close to gas outlet, the preposition treatment region setting There is UV ultraviolet lamp pipe；The UV ultraviolet lamp pipe close to air inlet partial denudation, for generating ozone；The UV ultraviolet light Be partially covered at least one layer of photo-catalytic filtering screen of the fluorescent tube far from air inlet, the photo-catalytic filtering screen is by filter screen and is applied to Photocatalyst on filter screen is constituted；The redox area is provided with oxidation reduction catalyst.

2. emission-control equipment according to claim 1, which is characterized in that the photo-catalytic filtering screen is ultraviolet in the UV It is covered on line tube circumference direction for part, the redox area is equipped at least one porous catalyst block, the redox Catalyst is applied on the catalyst block.

3. emission-control equipment according to claim 2, which is characterized in that the photo-catalytic filtering screen is two layers or three Layer.

4. emission-control equipment according to any one of claims 1 to 3, which is characterized in that the UV ultraviolet lamp pipe quilt The length of photo-catalytic filtering screen covering part in the axial direction accounts for the 60%- of the UV ultraviolet lamp pipe axial overall length 80%, the UV ultraviolet lamp pipe circumference is accounted for by the photo-catalytic filtering screen overlay length on the circumference of the UV ultraviolet lamp pipe The 60%-80% of total length.

5. emission-control equipment according to claim 2 or 3, which is characterized in that the material of the catalyst block be activated carbon, Cordierite or mullite, the oxidation reduction catalyst are mainly transition metal.

6. emission-control equipment according to claim 5, which is characterized in that the oxidation reduction catalyst further includes three oxygen Change two iron.

7. emission-control equipment according to any one of claims 2 to 3, which is characterized in that the redox area is also set There are multiple activated alumina beads, the activated alumina bead surface is also coated with the reductant-oxidant.

8. emission-control equipment according to claim 4, which is characterized in that the air inlet and the gas outlet at least one Place is equipped with fan, is equipped with dustproof filter screen at the air inlet.

9. emission-control equipment according to any one of claims 1 to 3, which is characterized in that the preposition treatment region and institute Redox area is stated for serial setting or parallel setting, parallel when setting, in the preposition treatment region and the redox area Between have partition.