CN114849460B - System and method for treating malodorous waste gas based on microwave ultraviolet light - Google Patents
System and method for treating malodorous waste gas based on microwave ultraviolet light Download PDFInfo
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- CN114849460B CN114849460B CN202210348068.3A CN202210348068A CN114849460B CN 114849460 B CN114849460 B CN 114849460B CN 202210348068 A CN202210348068 A CN 202210348068A CN 114849460 B CN114849460 B CN 114849460B
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- 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
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary reactants
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- 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
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/90—Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
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- 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
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- 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
- B01D2259/806—Microwaves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a system and a method for treating malodorous waste gas based on microwave ultraviolet light, and belongs to the technical field of environmental protection. The method comprises the following steps: the box body is internally provided with a hollow purification cavity; the lamp tube brackets are arranged in the purification cavity at preset intervals; n lamp tubes are arranged in the lamp tube bracket at equal intervals; the nickel screen brackets are arranged in a staggered manner with the lamp tube brackets according to a preset interval; the nickel screen bracket has the freedom degree along the width direction, and N nickel screen groups are arranged in the nickel screen bracket at equal intervals; when the lamp is illuminated, the nickel screen sheet on the nickel screen group is in a bent state and is close to the tube wall of the corresponding lamp tube. When the microwave irradiation treatment is carried out, the irradiation surface of the nickel mesh sheet is enlarged, the wrapping layer on the nickel mesh sheet can be maximally oxidized and decomposed, and the wrapping layer acts on malodorous gas and is converted into carbon dioxide, water, hydrogen chloride and other small molecular substances, so that the space density average of an energy field is improved, and the removal efficiency of organic waste gas is greatly improved.
Description
Technical Field
The invention belongs to the technical field of environmental protection, and particularly relates to a system and a method for treating malodorous waste gas based on microwave ultraviolet light.
Background
The photocatalytic technology is a technology utilizing novel composite nano high-tech functional materials and is generally applied to a plurality of air purification technologies. Ultraviolet light generated by a microwave electrodeless lamp is fully contacted with a photocatalyst, so that the photocatalytic oxidation effect is achieved: due to the catalytic action of the photocatalyst, the bond energy of organic molecules is greatly reduced, so that the waste gas is decomposed.
However, in the prior art, when the waste gas is treated by photocatalysis, the waste gas is irradiated on the corresponding catalytic filler through an electrodeless microwave ultraviolet lamp tube, but the catalytic effect is poor due to the small irradiated surface area of the catalytic filler; and the catalytic filler at different positions is also different in irradiation intensity of ultraviolet light, so that the utilization rate of the catalytic filler is not high, and the catalytic effect is further reduced.
Disclosure of Invention
The invention provides a system and a method for treating malodorous waste gas based on microwave ultraviolet light, which aim to solve the technical problems in the background technology.
The invention adopts the following technical scheme: a microwave ultraviolet light-based malodorous waste gas treatment system comprises: the box body is internally provided with a hollow purification cavity; one end of the box body is provided with an air inlet communicated with the purification cavity, and the other end of the box body is provided with an air outlet communicated with the purification cavity; further comprising:
the lamp tube brackets are arranged in the purification cavity at preset intervals; the lamp tube bracket has freedom degree along the width direction; n lamp tubes are arranged in the lamp tube bracket at equal intervals;
the nickel screen brackets are arranged in a staggered manner with the lamp tube brackets according to a preset interval; the nickel mesh support has a degree of freedom in the width direction; n nickel screen groups are arranged in the nickel screen bracket at equal intervals; when the lamp is illuminated, the nickel screen sheet on the nickel screen group is in a bent state and is close to the tube wall of the corresponding lamp tube.
In a further embodiment, the lamps on the adjacent lamp brackets are arranged in a staggered manner;
the nickel screen groups on the adjacent nickel screen brackets are arranged in a staggered manner.
By adopting the technical scheme, the lamp tubes and the nickel screen which are arranged in a staggered manner further increase the irradiated area of the nickel screen sheet, and particularly, the back surface of the nickel screen sheet can be subjected to illumination treatment through the lamp tubes arranged behind the nickel screen sheet.
In a further embodiment, the set of nickel meshes comprises at least:
the edge of the nickel mesh sheets is provided with a connecting frame;
the deformation mechanism is arranged on one side surface of the nickel screen bracket; the deformation mechanism at least comprises: the two symmetrically arranged installation parts are respectively and fixedly connected with the nickel mesh; external force acts on the mounting part to drive the nickel net sheets to move oppositely within a preset angle range.
By adopting the technical scheme, when the nickel screen support needs to be drawn out for treatment, the deformation mechanism is utilized to control the nickel screen pieces to be positioned on the same surface, so that the avoidance space required for movement is generated in the moving process.
In a further embodiment, the deformation mechanism further comprises:
the fixing seat is fixed on the nickel screen bracket; the two mounting arms of the fixing seat are provided with sliding grooves along the length direction;
the moving plate is elastically connected in the sliding groove; the two mounting parts are relatively hinged on the moving plate;
the two stopping parts are arranged on the mounting rack and correspond to the mounting parts; when the moving plate is rebounded, the included angle between the two mounting parts
Is 180 degrees, when the moving plate is compressed, the included angle between the two installation parts is greater or smaller than the preset angle>
At an obtuse angle.
In a further embodiment, further comprising: the trigger mechanisms are arranged on the lamp tube bracket, and the positions and the number of the trigger mechanisms correspond to those of the nickel screen groups on the adjacent nickel screen bracket;
the triggering mechanism triggers the deformation mechanism under the action of the pressure in the purification cavity to enable an included angle between the two groups of nickel meshes
The angle changes from 180 degrees to an obtuse angle.
By adopting the technical scheme, the pressure in the purification cavity is fully utilized, and the energy consumption is controlled to be in the optimal state in the self-adaptive operation energy-saving mode in the treatment chamber.
In a further embodiment, the trigger mechanism comprises:
the columnar shell penetrates through the lamp tube bracket; a gas inlet is formed in one end face of the columnar shell;
the rebound piece is arranged in the cylindrical shell;
one end of the trigger body is connected with the rebound piece, and the other end of the trigger body penetrates through the other end face of the columnar shell;
wherein the resilient member comprises: the wind shield is movably filled in the vertical section of the columnar shell;
the compression spring is sleeved on the trigger body and is positioned between the columnar shell and the wind shield; the wind shield is under the action of external forceThe trigger body moves towards the direction of the trigger body and compresses the compression spring, and the trigger body extends outwards and is propped against the deformation mechanism; when the external force disappears, the compression spring rebounds, the wind shield moves in the direction opposite to the direction of the trigger body and is separated from the deformation mechanism, and the included angle between the two installation parts
And returns to 180 deg..
In a further embodiment, when the moving plate is in a compressed state, the angle between the two mounting portions is
The value ranges are as follows: />
In the formula, r is the outer diameter of the lamp tube, and d is the distance from the lamp tube bracket to the nickel screen bracket.
By adopting the technical scheme, the illumination area of the nickel mesh sheet is increased, and meanwhile, the nickel mesh sheet is ensured to be not in contact with the lamp tubes on the two sides of the nickel mesh sheet.
In a further embodiment, the width of the nickel mesh is defined aswThe distance between two adjacent lamp tubes on the same lamp tube bracketjThe following relationship is satisfied:
j 
2w-2r(ii) a Wherein r is the outer diameter of the lamp tube.
By adopting the technical scheme, the nickel screen sheet is ensured not to be interfered at any time.
In a further embodiment, the nickel mesh comprises: the nickel screen comprises a nickel screen body, a ceramic carrier baked on the nickel screen body and a wrapping layer injected on the ceramic carrier;
the wrapping layer at least comprises the following components: noble metal oxide, graphene and TiO supported 2 。
The malodorous waste gas treatment method using the microwave ultraviolet light-based malodorous waste gas treatment system comprises the following steps:
step one, installing the lamp tube on the lamp tube bracket and installing the nickel screen sheet in the corresponding installation part as required; at the moment, the deformation mechanism is free from any external force, namely the movable plate is in a rebound state, and the included angle between two groups of nickel net sheets arranged in the same group of deformation mechanisms is 180 degrees;
secondly, pushing the lamp tube bracket and the nickel mesh bracket which are respectively provided with the lamp tube and the nickel mesh sheet into a purification cavity, and positioning;
step three, sealing the air outlet, and allowing the malodorous waste gas to enter the purification cavity from the air inlet; when the air pressure in the purification cavity reaches a first threshold value, the air in the purification cavity enters the cylindrical shell through the air inlet;
step four, the malodorous waste gas continuously enters the purification cavity, the air pressure is increased along with the malodorous waste gas, and when the air pressure in the purification cavity reaches a second threshold value, the movable plate moves towards the direction of the trigger body under the action of the air pressure, namely the trigger body approaches to the corresponding deformation mechanism until the trigger body abuts against the mounting part of the deformation mechanism;
defining the moving distance of the trigger body as a trigger distance L;
step five, the included angle between the two installation parts
Decreases along with the increase of the trigger distance L until the moving plate is in a completely compressed state, and the included angle is greater or less than the preset value>
The following conditions are satisfied: />
；
Step six, after the specified time of treatment, closing the air inlet, opening the air outlet to extract the treated waste gas, wherein the air pressure in the purification cavity is gradually reduced, the air pressure of the columnar shell is reduced, and the trigger body gradually loses the action of external force and begins to rebound until the trigger body is not in contact with the deformation mechanism;
step seven, the included angle between the two installation parts
Return to 180 °;
and when the third step to the seventh step are executed, the microwave generator is always in a working state.
The invention has the beneficial effects that: when the microwave illumination treatment is carried out, the illumination-receiving surface of the nickel mesh sheet is enlarged, the wrapping layer on the nickel mesh sheet can be maximally oxidized and decomposed, and the wrapping layer acts on malodorous gas and is converted into carbon dioxide, water, hydrogen chloride and other small molecular substances, so that the space density average of an energy field is improved, and the removal efficiency of organic waste gas is greatly improved; the angle and the state of the nickel mesh sheet in the invention depend on the flow of the malodorous gas to be treated at present, namely the angle and the utilization rate of the required nickel mesh sheet are determined based on the treatment capacity of the malodorous gas, and the energy consumption control in the self-adaptive operation energy-saving mode in the treatment chamber to the optimal state is realized.
Drawings
Fig. 1 is a schematic structural diagram of a microwave ultraviolet light-based malodorous waste gas treatment system of the present invention.
FIG. 2 is a first state diagram of the lamp tube and the nickel mesh sheet according to the present invention.
FIG. 3 is a second state diagram of the lamp tube and the nickel mesh sheet according to the present invention.
FIG. 4 is a third state diagram of the lamp tube and the nickel mesh sheet of the present invention.
Fig. 5 is a structural view of the deforming mechanism and the triggering mechanism in the present invention.
Fig. 6 is a schematic structural diagram of a deformation mechanism in the present invention.
Fig. 7 is a sectional view of the trigger mechanism in the present invention.
FIG. 8 is a side view of a nickel mesh in accordance with the present invention.
Each of fig. 1 to 8 is labeled as: the lamp tube comprises a box body 1, an air inlet 2, an air outlet 3, a lamp tube support 4, a nickel screen support 5, a nickel screen sheet 6, a deformation mechanism 7, a trigger mechanism 8, a lamp tube 9, a fixed seat 701, a sliding groove 702, a moving plate 703, a stop part 704, a spring 705, an installation part 706, a cylindrical shell 801, a wind shield 802, a compression spring 803, a trigger body 804 and a gas inlet 805.
Detailed Description
The invention is further described in the following with reference to the drawings and examples.
Example 1
In order to solve the technical problems in the background art, the present embodiment provides a system for treating malodorous waste gas based on microwave ultraviolet light, as shown in fig. 1, comprising: the device comprises a box body 1, wherein at least one purifying cavity is formed in the box body 1 in a hollow structure. An air inlet 2 and an air outlet 3 are respectively arranged at two ends of the box body 1, and the air inlet 2 and the air outlet 3 are communicated with the purification cavity. In the present embodiment, it is defined that the end provided with the air inlet 2 is the front side, and the end provided with the air outlet 3 is the rear side. During waste gas treatment, the malodorous waste gas enters the purifying cavity from the gas inlet 2 and is discharged from the gas outlet 3 after a series of treatments in the purifying cavity.
In this embodiment, the interior of the purification chamber comprises at least: the lamp tube comprises a plurality of lamp tube brackets 4 and a plurality of nickel screen brackets 5, wherein the lamp tube brackets 4 and the nickel screen brackets 5 have a specific degree of freedom in the width direction of the purification cavity. In other words, the lamp tube bracket 4 and the nickel screen bracket 5 are installed in the purification cavity in a drawing way, when the lamp tube bracket 4 and the nickel screen bracket 5 are in work, both are positioned in the purification cavity, and the connection part is in a sealed state; when the lamp tube or the nickel mesh 6 needs to be maintained, replaced and the like, the lamp tube bracket 4 and the nickel mesh bracket 5 are pulled out from the purification cavity.
In a further embodiment, N lamp tubes are equidistantly installed in the lamp tube support 4, wherein N is an integer greater than or equal to 2, the lamp tubes are preferably electrodeless quartz lamp tubes of solid mercury-silver alloy luminescent sheets, the temperature of the lamp tubes can reach 90 ℃, the lamp tubes are favorable for recovering solid mercury alloy after being damaged, mercury vapor is not generated at normal temperature, and secondary pollution to the environment is avoided. The electrodeless quartz lamp tube has the function of accurately controlling the mercury vapor pressure in the use process, and the solid mercury alloy has super strong adsorption property to the mercury vapor, so that the loss speed of the solid mercury-silver alloy is much slower than that of the liquid mercury, and the service life of the lamp tube can be effectively prolonged.
N nickel screen groups are arranged in the nickel screen bracket 5 at equal intervals; when the lamp is illuminated, the nickel net sheet 6 on the nickel net group is in a bent state and is close to the tube wall of the corresponding lamp tube. The nickel mesh sheet 6 in the bent state can receive the irradiation of the lamp tube in the largest area, and the catalyst on the nickel mesh sheet 6 is promoted to act on the malodorous gas. In order to achieve the above effect, the end of the nickel mesh sheet 6 is bent and extended between the two lamps.
However, based on the above description, the nickel mesh sheet 6 in a bent state will cause the following problems: when the nickel screen support 5 is in a moving state (entering or pulling), the total thickness of the nickel screen support increases, so that the nickel screen support collides with the lamp tube on the adjacent lamp tube support 4 in the moving process, and the nickel screen support 5 is prevented from moving continuously.
Therefore, in order to solve the above technical problem, in another embodiment, each group of nickel mesh groups at least includes: the deformation mechanism 7 is arranged on the front side surface of the nickel screen bracket 5; wherein, deformation mechanism 7 includes the installation department that two symmetries set up at least, a terminal surface of installation department is the installation face for fixed mounting nickel net piece 6, for the ease of the installation, the edge of nickel net piece 6 is provided with the connection frame. The other end surface of the mounting part is a hinged surface, the hinged surfaces of the two mounting parts are hinged with each other, and the hinged part is a stress point. In other words, the stress point is driven under the action of external force, the hinge surfaces corresponding to the two groups of mounting parts are pushed, and the mounting surfaces corresponding to the two groups of mounting parts move oppositely in a preset angle range, so that the nickel net sheet 6 is close to the tube wall of the corresponding lamp tube.
In a further embodiment, the deformation mechanism 7 further comprises: the fixing base 701 has two symmetrically arranged mounting arms and a connecting arm vertically connected between the two mounting arms. Wherein the connecting arm is fixedly connected on the nickel screen bracket 5. And each group of mounting arms is provided with a sliding groove 702 along the length direction. A moving plate 703 is slidably connected between the two sliding grooves 702, a spring 705 is arranged between the moving plate 703 and the connecting arm, and the spring 705 is arranged to reset the mounting part under the condition that the mounting part is not subjected to external force, namely, the included angle between the two nickel mesh sheets 6 is restored to 180 degrees.
Further comprising: and two stop parts 704 corresponding to the mounting parts 706, wherein the two stop parts 704 are respectively fixed on the mounting frame. When the spring 705 is in a compressed state, the outer side wall of the mounting portion abuts against the stop portion 704, and the stop portion 704 applies an inward external force to the mounting portion to urge the oppositely disposed stop portions 704 to approach each other, and the approach distance is determined by the compression distance of the spring 705. In other words, when the moving plate 703 is rebounded, the included angle α between the two mounting portions is 180 °, and when the moving plate 703 is compressed, the included angle α between the two mounting portions is an obtuse angle.
Based on the above description, if the compression distance of the spring 705 is too long, it means that the moving plate 703 is pushed too long, and therefore, the included angle between the two symmetrically arranged installation parts is too small, which may cause the nickel mesh sheet 6 on the installation parts to contact with the lamp tube during lighting, and have direct influence on the performance and the service life of the two.
Therefore, in order to solve the above technical problem, it is necessary to ensure that the nickel mesh sheet 6 is not in contact with the nickel mesh sheet while ensuring that the nickel mesh sheet 6 can be illuminated in a large area, and therefore, the present embodiment has the following requirements for the range of the included angle α between the two mounting portions: when the moving plate 703 is in a compressed state,
in the formula, r is the outer diameter of the lamp tube, and d is the distance from the lamp tube support 4 to the nickel mesh support 5.
Likewise, based on the above description, when the nickel mesh sheets 6 need to be processed or move along with the nickel mesh support 5, or when the light needs to be processed or move along with the lamp tube support 4, the included angle between the adjacent nickel mesh sheets 6 is 180 °. That is, in the current state, the adjacent nickel mesh sheets 6 are connected end to end, so that when the distance is designed, not only the distance from the lamp tube support 4 to the nickel mesh support 5 needs to be considered, but also whether the distance between the adjacent nickel mesh sheets 6 can ensure the normal extension when the included angle between the adjacent nickel mesh sheets 6 is 180 degrees needs to be considered.
Therefore, the embodiment is further improved: as shown in fig. 2, the width of the nickel mesh 6 is defined as w, and the distance j between two adjacent lamps on the same lamp support 4 satisfies the following relationship: j is approximately equal to 2w-2r; wherein r is the outer diameter of the lamp tube.
Through the position limitation of the two different directions, the nickel mesh 6 is free from other interference in any state and can be illuminated to the largest area.
In summary, when the system is in a working state, the nickel mesh sheet 6 should be in a bending state according to requirements to increase the light illumination area as much as possible, and when the system is in a trimming state and the nickel mesh sheet 6 and the lamp tube need to be replaced, the nickel mesh sheet 6 should be on the same plane, so that the state requirements cannot be well controlled only by the deformation mechanism 7, and therefore in another embodiment, a trigger mechanism 8 matched with the deformation mechanism 7 is also disclosed.
The triggering mechanisms 8 are arranged on the lamp tube bracket 4, and the number and the positions of the triggering mechanisms correspond to those of the deformation mechanisms 7 on the nickel screen bracket 5 positioned at the rear side of the lamp tube bracket 4. Namely, the trigger mechanism 8 on the lamp tube support 4 is used for controlling the deformation mechanism 7 on the nickel screen support 5 at the rear side of the lamp tube support 4, and each set of trigger mechanism 8 and the deformation mechanism 7 at the rear side form a unit.
If a one-key trigger mechanism 8 is adopted, namely when the working is needed, the trigger mechanism 8 directly triggers the deformation mechanism 7, so that the nickel mesh sheet 6 in transmission connection with the deformation mechanism is directly bent, and the angle alpha is fixed; on the contrary, when the work needs to be suspended, the trigger mechanism 8 does not act on the deformation mechanism 7, and the angle alpha is directly recovered to 180 degrees. Can satisfy the illumination demand and can solve the problem of space dodging when moving, however, no matter the volume of the stench waste gas of current processing is many or the volume is few, the contained angle between the nickel screen pieces 6 isαThat is, when the amount of the malodorous exhaust gas is small, the demand for the catalyst is not high in practice, that is, the nickel mesh sheet 6 does not need to be irradiated with light in a large area for treatment. The one-touch trigger mechanism 8 is therefore not energy efficient and does not adjust the nickel mesh 6 to an optimum condition depending on the current amount of malodorous gases.
Therefore, the trigger mechanism 8 disclosed in this embodiment triggers the deformation mechanism 7 under the action of the pressure in the purification chamber, so that the included angle α between the two sets of nickel meshes 6 is changed from 180 ° to an obtuse angle. In other words, the size of the included angle α between the two sets of nickel mesh sheets 6 is dependent on the pressure inside the current purge chamber.
As shown in fig. 7, the trigger mechanism 8 includes: the front and the back of the columnar shell 801 penetrate through the lamp tube bracket 4, and the interior of the columnar shell is of a hollow structure. And the front end face (the direction that the malodorous gas enters the purification cavity) of the columnar shell 801 starts to be provided with a gas inlet 805, a rebound piece is arranged inside the columnar shell, the rear end face of the rebound piece is connected with a trigger 804, and the rear end of the trigger 804 penetrates through the other end face of the columnar shell 801 and is used for abutting against the mounting part of the deformation mechanism 7. A sealing ring is arranged at the movable connection part of the trigger body 804 and the cylinder shell.
In a further embodiment, the resilient member comprises: the wind shield 802 is movably filled in the vertical section of the columnar shell 801; and the compression spring 803 is sleeved on the trigger 804 and is positioned between the cylindrical shell 801 and the wind deflector 802.
When the gas pressure in the purge chamber reaches the first threshold value, part of the gas enters the cylindrical housing 801 from the gas inlet. When the gas pressure reaches a second threshold value, a force is exerted on the wind shield 802, the wind shield 802 moves towards the direction of the trigger body 804 and compresses the compression spring 803, the trigger body 804 extends outwards and abuts against the deformation mechanism 7, the nickel mesh sheets 6 on the two mounting portions are triggered to move oppositely, arcsin r/d < alpha <180 degrees, the value of alpha depends on the gas pressure in the purification cavity, in other words, the larger the gas pressure is, the smaller the alpha is, the larger the light exposure surface of the nickel mesh sheets 6 and the lamp tube is, and the processing requirement of the current gas quantity is met; when the external force disappears, the compression spring 803 rebounds, the wind shield 802 moves in the opposite direction of the trigger 804 and is separated from the deformation mechanism 7, and the included angle α between the two mounting portions is restored to 180 °.
Based on the above description, under the action of the trigger 804, the front side surface of the corresponding nickel mesh 6 and the light tube located at the front side thereof are close to each other, but the rear side surface of the nickel mesh 6 is far away from the light tube located at the rear side thereof, so that the illumination of the rear side surface of the nickel mesh 6 is affected, as shown in fig. 3.
Therefore, in order to solve this technical problem, the following improvements are made in the present embodiment: the lamp tubes on the adjacent lamp tube brackets 4 are arranged in a staggered way; the nickel screen groups on the adjacent nickel screen brackets 5 are arranged in a staggered way. That is, as shown in fig. 4, when the included angle between the nickel mesh sheets 6 is an obtuse angle, the front side surface of the nickel mesh sheet 6 is illuminated by the lamp tube positioned at the front side thereof, and the rear side surface of the nickel mesh sheet 6 is illuminated by the lamp tube positioned at the rear side thereof, which are mutually staggered to ensure that both the front side surface and the rear side surface of the nickel mesh sheet 6 are illuminated by the corresponding lamp tubes.
When the microwave illumination treatment is carried out, the illumination receiving surface of the nickel mesh sheet 6 is enlarged, the wrapping layer on the nickel mesh sheet 6 can be oxidized and decomposed to the maximum extent, and the wrapping layer acts on malodorous gas and is converted into carbon dioxide, water, hydrogen chloride and other small molecular substances, so that the space density average of an energy field is improved, and the removal efficiency of organic waste gas is greatly improved.
The nickel mesh sheet 6 used in the present embodiment is formed by laminating at least two nickel mesh layers, as shown in fig. 8. The nickel mesh 6 includes: the nickel screen comprises a nickel screen body, a ceramic carrier baked on the nickel screen body and a wrapping layer (catalyst) injected on the ceramic carrier, wherein the wrapping layer at least comprises the following components: noble metal oxide, graphene and TiO are loaded 2 。
Example 2
Based on the microwave ultraviolet light-based malodorous waste gas treatment system disclosed by the embodiment 1, the embodiment discloses a microwave ultraviolet light-based malodorous waste gas treatment method of the malodorous waste gas treatment system, which comprises the following steps:
step one, installing the lamp tube on the lamp tube bracket and installing the nickel screen sheet in the corresponding installation part as required; at the moment, the deformation mechanism is free from any external force, namely, the movable plate is in a springback state, and the included angle between two groups of nickel screen sheets arranged in the same group of deformation mechanisms is 180 degrees, namely, the nickel screen sheets on the same nickel screen support are in the same plane;
secondly, pushing the lamp tube bracket and the nickel mesh bracket which are respectively provided with the lamp tube and the nickel mesh sheet into the purification cavity, and positioning the lamp tube bracket and the nickel mesh bracket;
step three, sealing the air outlet, and allowing the malodorous waste gas to enter the purification cavity from the air inlet; when the air pressure in the purification cavity reaches a first threshold value, the air in the purification cavity enters the cylindrical shell through the air inlet;
step four, the malodorous waste gas continuously enters the purification cavity, the air pressure is increased along with the malodorous waste gas, and when the air pressure in the purification cavity reaches a second threshold value, the movable plate moves towards the direction of the trigger body under the action of the air pressure, namely the trigger body approaches to the corresponding deformation mechanism until the trigger body abuts against the mounting part of the deformation mechanism;
defining the moving distance of the trigger body as a trigger distance L;
step five, the included angle alpha between the two installation parts is reduced along with the increase of the trigger distance L, the value of the included angle alpha is determined according to the air pressure in the current purification cavity, and the included angle at the moment
The following conditions are satisfied: />
；
Step six, after the specified time of treatment, closing the air inlet, opening the air outlet to extract the treated waste gas, wherein the air pressure in the purification cavity is gradually reduced, the air pressure of the columnar shell is reduced, and the trigger body gradually loses the action of external force and begins to rebound until the trigger body is not in contact with the deformation mechanism;
step seven, the included angle between the two installation parts
Return to 180 °; the lamp tube bracket or the nickel screen bracket can move conveniently. And when the third step to the seventh step are executed, the microwave generator is always in a working state. />
Claims (5)
1. A microwave ultraviolet light-based malodorous waste gas treatment system comprises: the box body is internally provided with a hollow purification cavity; one end of the box body is provided with an air inlet communicated with the purification cavity, and the other end of the box body is provided with an air outlet communicated with the purification cavity; it is characterized by also comprising:
the lamp tube brackets are arranged in the purification cavity at preset intervals; the lamp tube bracket has freedom degree along the width direction; n lamp tubes are arranged in the lamp tube bracket at equal intervals;
the nickel screen brackets are arranged in a staggered manner with the lamp tube brackets according to a preset interval; the nickel mesh support has a degree of freedom in the width direction; n nickel screen groups are arranged in the nickel screen bracket at equal intervals;
the nickel screen group at least comprises:
the edge of the nickel mesh sheets is provided with a connecting frame;
the deformation mechanism is arranged on one side surface of the nickel screen bracket; the deformation mechanism at least comprises: the two symmetrically arranged installation parts are respectively and fixedly connected with the nickel mesh; external force acts on the mounting part to drive the nickel meshes to do opposite motion within a preset angle range;
further comprising: the trigger mechanisms are arranged on the lamp tube bracket, and the positions and the number of the trigger mechanisms correspond to those of the nickel screen groups on the adjacent nickel screen bracket;
when the device is illuminated, the triggering mechanism triggers the deformation mechanism under the action of the pressure in the purification cavity, so that the included angle between the two groups of nickel net sheets
The angle is changed from 180 degrees to an obtuse angle; the nickel net sheets on the nickel net group are in a bending state and are close to the tube walls of the corresponding lamp tubes; on the contrary, the included angle between the two groups of nickel meshes is greater or smaller>
The angle is 180 degrees;
the trigger mechanism includes:
the columnar shell penetrates through the lamp tube bracket; a gas inlet is formed in one end face of the columnar shell;
the rebound piece is arranged in the cylindrical shell;
one end of the trigger body is connected with the rebound piece, and the other end of the trigger body penetrates through the other end face of the columnar shell;
wherein the resilient member comprises: the wind shield is movably filled in the vertical section of the columnar shell;
the compression spring is sleeved on the trigger body and is positioned between the columnar shell and the wind shield; under the action of external force, the wind shield moves towards the direction of the trigger body and compresses the compression spring, and the trigger body extends outwards and abuts against the deformation mechanism; when the external force disappears, the compression spring rebounds, the wind shield moves in the direction opposite to the direction of the trigger body and is separated from the deformation mechanism, and the included angle between the two installation parts
Return to 180 °;
the lamp tubes on the adjacent lamp tube brackets are arranged in a staggered manner;
the nickel screen groups on the adjacent nickel screen brackets are arranged in a staggered manner;
the deformation mechanism further comprises:
the fixing seat is fixed on the nickel screen bracket; the two mounting arms of the fixing seat are provided with sliding grooves along the length direction;
the moving plate is elastically connected in the sliding groove; the two mounting parts are relatively hinged on the moving plate;
the two stopping parts are arranged on the bracket and correspond to the mounting parts; when the moving plate is rebounded, the included angle between the two mounting parts
Is 180 degrees, when the moving plate is compressed, the included angle between the two installation parts is greater or smaller than the preset angle>
Is an obtuse angle.
2. The system for treating the malodorous waste gas based on microwave and ultraviolet light as claimed in claim 1,
when the moving plate is in a compressed state, the included angle between the two mounting parts
The value ranges of (A) are as follows:
in the formula, r is the outer diameter of the lamp tube, and d is the distance from the lamp tube bracket to the nickel screen bracket.
3. The system for treating malodorous waste gas generated in microwave UV-based production, as claimed in claim 1, wherein the width of the nickel mesh is defined aswThe distance j between two adjacent lamp tubes on the same lamp tube bracket satisfies the following relation:
j
2w-2r; wherein r is the outer diameter of the lamp tube.
4. The microwave ultraviolet light-based malodorous waste gas treatment system as claimed in claim 1, wherein said nickel mesh comprises: the nickel screen comprises a nickel screen body, a ceramic carrier baked on the nickel screen body and a wrapping layer injected on the ceramic carrier;
the wrapping layer at least comprises the following components: noble metal oxide, graphene and TiO supported 2 。
5. A method for treating malodorous waste gas using the microwave ultraviolet light-based malodorous waste gas treatment system as claimed in any one of claims 1 to 4, comprising the steps of:
step one, installing the lamp tube on the lamp tube bracket and installing the nickel screen sheet in the corresponding installation part as required; at the moment, the deformation mechanism is free from any external force, namely the movable plate is in a rebound state, and the included angle between two groups of nickel net sheets arranged in the same group of deformation mechanisms is 180 degrees;
secondly, pushing the lamp tube bracket and the nickel mesh bracket which are respectively provided with the lamp tube and the nickel mesh sheet into a purification cavity, and positioning;
step three, sealing the air outlet, and allowing the malodorous waste gas to enter the purification cavity from the air inlet; when the air pressure in the purification cavity reaches a first threshold value, the air in the purification cavity enters the cylindrical shell through the air inlet;
step four, the odorous waste gas continuously enters the purification cavity, the air pressure increases along with the odorous waste gas, and when the air pressure in the purification cavity reaches a second threshold value, the movable plate moves towards the direction of the trigger body under the action of the air pressure, namely the trigger body approaches to the corresponding deformation mechanism until the trigger body abuts against the installation part of the deformation mechanism;
defining the moving distance of the trigger body as a trigger distance L;
step five, the included angle between the two installation parts
Decreases along with the increase of the trigger distance L until the moving plate is in a completely compressed state, and the included angle is greater or less than the preset value>
The following conditions are satisfied: />
；
Step six, after the specified time of treatment, closing the air inlet, opening the air outlet to extract the treated waste gas, wherein the air pressure in the purification cavity is gradually reduced, the air pressure of the columnar shell is reduced, and the trigger body gradually loses the action of external force and begins to rebound until the trigger body is not in contact with the deformation mechanism;
step seven, the included angle between the two installation parts
Return to 180 °;
and when the third step to the seventh step are executed, the microwave generator is always in a working state.
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| CN207591615U (en) * | 2017-10-26 | 2018-07-10 | 浙江龙源四方机械设备制造有限公司 | For deodorization, the catalyst converter of purification fish powder waste gases |
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| JP2007135813A (en) * | 2005-11-17 | 2007-06-07 | Lion Corp | Deodorization equipment |
| CN204582928U (en) * | 2015-01-27 | 2015-08-26 | 江苏现代环保科技有限公司 | Waste water, refuse depot foul gas cleaning equipment |
| CN107261835A (en) * | 2017-07-24 | 2017-10-20 | 长兴博易环保科技有限公司 | Major diameter low-light resonance emission-control equipment |
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