CN114632436B - Fluid mixer, combustion device comprising same and treatment method of VOCs (volatile organic Compounds) gas - Google Patents
Fluid mixer, combustion device comprising same and treatment method of VOCs (volatile organic Compounds) gas Download PDFInfo
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- CN114632436B CN114632436B CN202210536074.1A CN202210536074A CN114632436B CN 114632436 B CN114632436 B CN 114632436B CN 202210536074 A CN202210536074 A CN 202210536074A CN 114632436 B CN114632436 B CN 114632436B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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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 application provides a fluid mixer, a combustion device comprising the fluid mixer and a treatment method of VOCs gas, comprising a cavity, a gas inlet and a gas outlet, wherein the cavity comprises an inlet and an outlet; the mixing element is internally provided with a plurality of baffling structures, and the space between the baffling structures forms a channel through which fluid passes; the mixing element divides the interior of the cavity into a plurality of sub-cavity units, and the communication channel between the sub-cavity units is only the mixing element. The baffling structure reflects the flowing gas impacting on the baffling structure to change the flowing direction of the gas irregularly, and for a plurality of strands of gas to be mixed, the flowing direction after the gas is reflected is irregular, so that the gas is mixed more uniformly. The cavity of fluid mixer is cut apart into a plurality of sub-cavity units in this application, when taking place the burning in wherein certain sub-cavity unit, because mixing element's separation can prevent that the burning from extending to other sub-cavity units of cutting apart rather than to the security of mixing process has been improved.
Description
Technical Field
The invention belongs to the technical field of mixers, and particularly relates to a fluid mixer, a combustion device comprising the fluid mixer and a treatment method of VOCs (volatile organic compounds) gas.
Background
The mixer is used for mixing a plurality of gases, and the mixed gases are more uniform. For combustion, the temperature field distribution of the uniform mixed gas heating flame is more uniform, and NO in the combusted smoke gas X And the discharge of VOCs is low.
The safety problems of the mixers in the prior art are rarely related, and the invention aims to solve the problems of sufficiency and safety of the mixing process.
Disclosure of Invention
The present invention provides a fluid mixer, a combustion apparatus including the fluid mixer, and a method for treating VOCs gas, which are directed to the above technical problems in the prior art.
The fluid mixer provided herein comprises:
a chamber comprising an inlet and an outlet;
the mixing element is internally provided with a plurality of baffling structures, and the space between the baffling structures forms a channel through which fluid passes;
the mixing element divides the interior of the cavity into a plurality of sub-cavity units, and a communication channel between each sub-cavity unit is only the mixing element.
In a preferred embodiment, the mixing element comprises the baffle structures arranged in layers, the baffle structures being thin-layer corrugated metal plates, and/or
The mixing element comprises the baffling structures woven with one another, the baffling structures being metal wires.
In a preferred embodiment, the baffle structure comprises an elastic structural member and a fixing member, wherein the elastic structural member is fixed on the inner wall of the cavity by the fixing member;
the elastic structural members are arranged in a crossed mode, and the elastic structural members are elastically deformed under the action of airflow flowing into the cavity.
In a preferred embodiment, the inner wall of the sub-cavity unit is provided with a vertical plate and/or a spiral plate.
In a preferred embodiment, the inlet and the outlet are respectively located at two ends of the cavity, and the sub-cavity units are arranged in series in a direction of a straight line connecting the inlet and the outlet.
In a preferred embodiment, a branch inlet is provided on the sub-cavity unit.
In a preferred embodiment, a pressure relief device is arranged on the cavity, and when the pressure in the cavity exceeds a threshold value, the pressure relief device closes an inlet of the cavity and opens the cavity.
The present application further provides a combustion apparatus comprising the fluid mixer, and a combustion chamber in communication with the fluid mixer, the combustion chamber being provided with a burner and an igniter.
In a preferred embodiment, the burner is a metal fiber surface burner; the mixing element is arranged below the metal fibers of the burner.
The application also provides a treatment method of the VOCs gas, and the combustion device is used for treating the VOCs gas.
In a preferred embodiment, VOCs gas, combustion-supporting gas and air enter one sub-cavity unit to be mixed at the same time; or
And the VOCs gas, the combustion-supporting gas and the air enter one sub-cavity unit at the same time and are mixed with a third person in the other sub-cavity unit.
According to the specific embodiment provided by the invention, compared with the prior art, the invention discloses the following technical effects:
embodiments provided herein provide a fluid mixer comprising a chamber comprising an inlet and an outlet; the mixing element is internally provided with a plurality of baffling structures, and the space between the baffling structures forms a channel through which fluid passes; the mixing element divides the interior of the cavity into a plurality of sub-cavity units, and a communication channel between each sub-cavity unit is only the mixing element. The baffling structure reflects the flowing gas impacting on the baffling structure to change the flowing direction of the gas irregularly, and for a plurality of strands of gas to be mixed, the flowing direction after the gas is reflected is irregular, so that the gas is mixed more uniformly. Further, the cavity of the fluid mixer is divided into a plurality of sub-cavity units, when combustion occurs in one sub-cavity unit, due to the obstruction of the mixing element, the combustion can be prevented from extending to other sub-cavity units which are divided from the mixing element, and therefore the safety of the mixing process is improved.
The application still provides a combustion apparatus, contains the blender, combustion apparatus's combustion chamber with the fluid mixer communicates with each other, process the mixture of blender, combustion apparatus burns in the working process NO in the flue gas of flame temperature field distribution more even and after the burning X And the discharge of VOCs is low, and the safety and the reliability of the combustion device are improved because the safety of the mixer is guaranteed.
The application also provides a VOCs gas processing method, the combustion device is utilized to carry out combustion processing on the VOCs gas, because the mixer can mix the VOCs gas and the combustion-supporting gas more sufficiently, and NO is contained in the flue gas after combustion X And the discharge of VOCs is low, so that the treatment method of the VOCs gas can reduce pollution damage to the environment.
Drawings
Fig. 1 is a schematic structural view of a fluid mixer provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a baffle structure provided in embodiment 1 of the present invention;
FIG. 3 is a schematic structural view of a combustion apparatus provided in embodiment 2 of the present invention;
fig. 4 is a schematic view showing the structure of the combustion apparatus in the method for treating VOCs gas provided in examples 3 and 4 of the present invention;
fig. 5 is a schematic structural diagram of the combustion apparatus in the method for treating VOCs gas according to example 5 of the present invention;
fig. 6 is a schematic view showing the structure of the combustion apparatus in the method for treating VOCs gas provided in examples 6 and 7 of the present invention.
Wherein the reference numbers are schematic: the device comprises a fluid mixer 100, a cavity 1, a first-stage sub-cavity unit 11, a second-stage sub-cavity unit 12, a third-stage sub-cavity unit 13, an inlet 101, an outlet 102, a mixing element 2, a first-stage mixing element 21, a second-stage mixing element 22, a spiral plate 3 and a branch inlet 4; and
an organic waste gas pipeline 501, a combustion-supporting gas pipeline 502, an air pipeline 503, an igniter pipeline 504, an igniter 6, a metal fiber surface burner 7 and metal fibers 701.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The fluid mixer is used for mixing various gases before links such as combustion, and the uniformly mixed gases are beneficial to the stable proceeding of the combustion process, improve the full degree of the combustion process and reduce harmful components in combustion products.
Especially for fluid mixers before the combustion stage, safety is also an aspect of considerable importance. In order to avoid explosion of combustible gas and combustion-supporting gas before combustion, the combustible gas and the combustion-supporting gas are met and mixed in a combustion link, and the products of unstable combustion process and insufficient combustion contain harmful components due to insufficient mixing. The fluid mixer provided by the embodiment improves the safety before combustion and enables the combustible gas and the combustion-supporting gas to be fully mixed.
This embodiment provides an embodiment of a fluid mixer, and referring to fig. 1, the fluid mixer includes:
a chamber 1 comprising an inlet 101 and an outlet 102;
the mixing element comprises a primary mixing element 21 and a secondary mixing element 22, a plurality of baffling structures 201 are arranged in the mixing element, and spaces among the baffling structures 201 form channels through which fluid passes;
The baffle structure 201 reflects the flowing gas impacting on the baffle structure to change the flowing direction of the gas irregularly, and for a plurality of gas to be mixed, such as combustible gas and combustion-supporting gas, the flowing direction after being reflected is irregular and scattered to different directions, so that the different gases are mixed more uniformly.
Further, in the present embodiment, the cavity 1 of the fluid mixer is divided into the first-stage sub-cavity unit 11, the second-stage sub-cavity unit 12 and the third-stage sub-cavity unit 13, and when combustion occurs in one of the sub-cavity units, due to the separation of the mixing element, the combustion can be prevented from extending to other sub-cavity units divided from the mixing element, so that the safety of the mixing process is improved. The fluid mixer has a certain thickness for combustion, heat, explosion isolation.
The present embodiment provides a specific implementation of the baffle structure 201: mixing element contains range upon range of setting the baffling structure, the baffling structure is thin layer metal buckled plate, range upon range of setting indicates gapped one-layer setting between a plurality of layers of thin metal buckled plate, and the clearance between the thin metal buckled plate is between 1mm to 500mm, and range upon range of direction is inconsistent with the direction of gas flow, and the thin metal buckled plate indicates that the board is thick at the metal sheet of the concave-convex ripple line in the surface of 0.1-1.5 millimeter thick.
The present embodiment also provides a specific implementation of the baffle structure 201: the mixing element comprises the baffling structures which are woven with each other, the baffling structures are metal wires, and the weaving comprises regular weaving and irregular weaving.
The metal part has explosion suppression capability and good heat dissipation capability, and the baffling structure comprises a multichannel metal material formed by material processing technologies such as folding, weaving, welding, corroding, sintering, casting, reacting, depositing and the like.
The present embodiment provides a specific implementation of the baffle structure 201 again: referring to fig. 2, the baffle structure comprises an elastic structural member and a fixing member, wherein the elastic structural member is fixed on the inner wall of the cavity by the fixing member, the elastic structural member is arranged in a cross manner, and the elastic structural member is elastically deformed under the action of the airflow flowing into the cavity. In this embodiment, the elastic structure member may be a thin metal band, both ends of the metal band are fixed on the inner wall of the cavity 1 by the fixing members, and the length of the metal band is greater than the linear distance between both ends of the metal band fixed on the inner wall of the cavity 1, so that the metal band is bent and deformable. The elastic structural member in this embodiment absorbs the kinetic energy of the gas impacting the elastic structural member and then releases the elastic potential energy of the gas, so as to impact the gas in the cavity 1 and disturb the flowing direction of the gas, thereby achieving the effect of uniform mixing.
The present embodiment provides a specific implementation of a sublumen unit: with continued reference to fig. 1, the inner wall of the sub-cavity unit is provided with a vertical plate and/or a spiral plate. The vertical plate and/or the spiral plate provide a flow guiding effect for the gas. The sub-cavity unit can be a cylinder, a diffusing cylinder, a venturi cylinder, a square cylinder or other unpowered structural components, and the mixed gas is mixed through turbulence in the sub-cavity unit to realize more sufficient mixing.
The present embodiment provides a specific implementation of a mode of arranging a sub-cavity unit in the cavity: with continued reference to fig. 1, the inlet 101 and the outlet 102 of the chamber 1 are respectively located at two ends of the chamber 1, and the first-stage sub-chamber unit 11, the second-stage sub-chamber unit 12 and the third-stage sub-chamber unit 13 are arranged in series in a direction of a straight line connecting the inlet 101 and the outlet 102. Through a plurality of the sub-cavity units that the series connection set up, gaseous through mixing, the mixture is more even.
The present embodiment provides a specific embodiment of the fluid mixer, and a branch inlet is provided on the sub-cavity unit. In the embodiment, the branch inlet 4 is arranged on the secondary sub-cavity unit 12, and one of the gases to be mixed enters the cavity 1 from the branch inlet 4 to participate in mixing.
In order to reduce the risk of explosion in the mixer, this embodiment provides a specific implementation manner of the fluid mixer, in which a pressure relief device is disposed on the housing, and when the pressure in the housing exceeds a threshold value, the pressure relief device closes the inlet of the cavity and opens the cavity, and actively closes the inlet to prevent more gas from participating in the explosion, and simultaneously opens the cavity.
Example 2
This example provides a specific embodiment of a combustion apparatus comprising the fluid mixer described in example 1, and
and the combustion chamber is communicated with the fluid mixer and is provided with a burner and an igniter.
Specifically, the organic waste gas pipe 501 and the combustion-supporting gas pipe 502 are the same as the cavity of the fluid mixer, the organic waste gas and the combustion-supporting gas are mixed by a mixing element, and then are mixed by the mixing element after passing through the air introduced by the air pipe 503, and reach the metal fiber surface burner 7 after being mixed, and the igniter 6 is communicated with the igniter pipe 504 to ignite and burn the mixed gas reaching the metal fiber surface burner 7.
This example provides a specific embodiment of the burner, and with continued reference to fig. 3, the mixing element is disposed below the metal fibers 701 of the metal fiber surface burner 7. Specific embodiments of the mixing element reference is made to the embodiment of the mixing element described in example 1.
The present example provides a combustion chamber, which is made of high temperature resistant heat insulation material. And may be selected as high temperature resistant heat insulating lining material, including, but not limited to, refractory fiber cotton, refractory brick, refractory castable, refractory paint, etc.
In a preferred embodiment, a heat exchanger is arranged in the combustion chamber, and the heat is removed and provided for other process units.
Several examples below provide a method of treating a gas of VOCs by the combustion apparatus described in example 2.
The Volatile Organic Compounds (VOCs), the waste gas generated in the oil product reservoir area of the finished oil, the waste gas generated in the oil field exploitation process, the waste gas generated in the loading of chemical mixture, the waste gas generated in the loading of crude oil products and the waste gas generated in the loading of finished oil trains all contain VOCs gas.
As the VOCs gas has various sources, the concentration fluctuation of combustible components is large, and the fluctuation of oxygen content is large, the heat value stability of the VOCs gas is realized by supplementing a certain amount of combustion-supporting gas, and the full mixing of the VOCs and oxygen is realized by supplementing a certain amount of air. The supplementary combustion-supporting gas is gas fuel such as natural gas, propane, hydrogen, coal gas, dry gas and the like.
The treatment of VOCs with gas can be achieved by the following several examples:
(1) the safety is greatly improved, and the anti-backfire capability of the combustion device is greatly improved;
(2) the ultralow emission of VOCs gas is realized;
(3) the ultralow emission of NOx is realized;
(4) the operation stability is enhanced;
(5) has no requirements for the oxygen content at the inlet of the combustion device, the concentration and the composition of the oil gas at the inlet.
Example 3
When the VOCs gas of the waste gas treatment that the VOCs gas originated in the finished oil product reservoir area in this embodiment originates from the waste gas that the finished oil product reservoir area produced, its waste gas has: continuous operation, large concentration change, oxygen content generally lower than 3 percent and large flow fluctuation.
The combustion-supporting gas is natural gas when the waste gas generated in the finished product oil product storage area is treated.
Waste gas, air and combustion-supporting gas generated in the finished oil reservoir area respectively enter the fluid mixer 100 through pipelines, and enter a combustion chamber through the mixing of the mixing element 2.
The structures of pipelines for conveying combustion-supporting gas, VOCs gas and air are respectively provided with a flame arrester, a monitoring instrument, a flow control valve, a safety partition valve and other parts to realize the control of the isolation, safety, flow, temperature, pressure and the like of the corresponding gas. The fluid mixer and the combustion device are respectively provided with a monitoring instrument to realize combustion monitoring. As shown in fig. 4, the following monitoring and control means are provided:
the organic waste gas pipeline 501 is provided with a pressure P, a temperature T, a flow F and a concentration C for monitoring, and is provided with an explosion damper 9 and a first flow control valve 41;
the combustion-supporting gas pipeline 502 is provided with a pressure P monitor and a second flow control valve 42;
the air line 503 is set to pressure P monitor;
the igniter pipe 504 is provided with a third flow control valve 43;
the sub-cavity unit at the rear section of the mixing element 2 in the fluid mixer 100 is provided with pressure P and temperature T for monitoring;
the combustion chamber is provided with a temperature T and a concentration C for monitoring.
By utilizing the treatment method of the VOCs gas of the combustion device, the VOCs gas, the combustion-supporting gas and the air enter the fluid mixer, and the components are fully mixed through the mixing action of the fluid mixer; in the mixing process, the mixing element 2 simultaneously realizes the safe isolation of the two sub-cavity units; the combustible components after mixing are ignited by an igniter and then fully combusted in the combustor, the combustion occurs in the combustion chamber, and finally the burnout gas is discharged to the atmosphere.
The VOCs gas, the combustion-supporting gas and the air enter the combustor according to the following steps: (1) the air conveying fan 8 is started, and air enters; (2) starting a flow control valve III 43, igniting by an igniter and igniting the system; (3) after ignition is successful, the second flow control valve 42 is opened, and combustion-supporting gas enters; (4) after the combustion-supporting gas normally runs, the first flow control valve 41 is opened, and VOCs gas enters; (5) VOCs gas is combusted, and waste gas enters a normal operation state.
In the operation process, the stable control and the operation monitoring of the combustion system are realized according to the monitoring instrument set in the figure 4 and the actions of the control valve and the fan.
According to the treatment method of the VOCs gas in the embodiment, the VOCs in the combustion tail gas can reach 15mg/m 3 NOx is less than 50mg/m 3 The exhaust emission of the emission standard is far lower than the national emission index requirement.
Example 4
This example provides a method of treating a gas of VOCs by the combustion apparatus described in example 2.
This example treats the off-gas associated with the oil field exploitation process, which off-gas has: continuous operation, high concentration and no oxygen.
The combustion-supporting gas is dry gas when the waste gas associated with the oil field exploitation process is treated.
The VOCs gas in this example was treated using the burner and other piping shown in fig. 4. Waste gas, air and combustion-supporting gas generated in the finished oil reservoir area respectively enter the fluid mixer 100 through pipelines, and enter a combustion chamber through the mixing of the mixing element 2.
According to the VOCs gas treatment method provided by the embodiment, VOCs in combustion tail gas can reach 15mg/m 3 NOx is less than 50mg/m 3 The exhaust emission of the emission standard is far lower than the national emission index requirement.
Example 5
The gaseous waste gas that produces for the loading of chemicals mixture of the VOCs that this embodiment was handled, its waste gas has: intermittent operation, large concentration change, large oxygen content, large flow fluctuation and no liquid drop in waste gas.
The combustion-supporting gas is propane gas when treating the waste gas associated with the oil field exploitation process.
The VOCs gas in this example was treated using the burner and other piping shown in fig. 5. Air, combustion-supporting gas pass through mixing element anterior segment sub-cavity unit in the pipeline entering fluid mixer 100 respectively, through mixing element 2's mixture, and the waste gas that the loading of chemical mixture produced gets into in fluid mixer 100 mixing element 2 back end sub-cavity unit and air, the mixed back of combustion-supporting gas get into the combustion chamber.
According to the VOCs gas treatment method provided by the embodiment, the characteristic pollutants in the combustion tail gas can reach the emission limit value specified in GB31571-2015, and the NOx is lower than 50mg/m 3 The exhaust emission of the emission standard is far lower than the national emission index requirement.
Example 6
The VOCs gas treated by the embodiment is the waste gas of the crude oil product shipment, and the waste gas comprises the following components: large concentration change, generally less than 6 percent of oxygen content and long operation time.
The VOCs gas in this example was treated using the burner and other piping shown in fig. 6.
A set of pretreatment unit 10 is arranged at the front end of the organic waste gas pipeline 501, and the pretreatment unit is a combined process of wet desulphurization and condensation; the concentration of the oil gas after passing through the pretreatment unit is between 0g/m 3 To 300g/m 3 And no sulfur and no liquid drops.
Referring to fig. 6, the VOCs gas and the combustion-supporting gas enter the sub-cavity unit at the front section of the primary mixing element 21; the air enters the sub-cavity unit between the first-stage mixing element 21 and the second-stage mixing element 22 through the pipeline, and the mixture of the three enters the sub-cavity unit at the rear section of the second-stage mixing element 22.
In this embodiment, set up temperature monitoring instrument in the sub cavity unit of the mixed original paper 21 anterior segment of one-level.
According to the treatment method of the VOCs gas provided by the embodiment, the VOCs in the combustion tail gas can reach 15mg/m 3 NOx is less than 50mg/m 3 ，SO 2 Less than 15mg/m 3 The exhaust emission of the emission standard is far lower than the national emission index requirement.
Example 7
The VOCs gas that this embodiment was handled is the waste gas of finished product oil train loading, and its waste gas has: intermittent operation, large concentration change, high oxygen content and long operation time.
The VOCs gas in this example was treated using the burner and other piping shown in fig. 6.
A set of pretreatment unit 10 is arranged at the front end of the organic waste gas pipeline 501, and the pretreatment unit is a combined process of condensation and adsorption; the concentration of the oil gas after passing through the pretreatment unit is between 0g/m 3 To 50g/m 3 And no droplets.
Referring to fig. 6, the VOCs gas and the combustion-supporting gas enter the sub-cavity unit at the front section of the primary mixing element 21; the air enters the sub-cavity unit between the first-stage mixing element 21 and the second-stage mixing element 22 through the pipeline, and the mixture of the three enters the sub-cavity unit at the rear section of the second-stage mixing element 22.
In this embodiment, set up temperature monitoring instrument in the sub cavity unit of the mixed original paper 21 anterior segment of one-level.
According to the method for treating VOCs gas by using the multistage dispersion burner, VOCs in combustion tail gas can reach 15mg/m 3 NOx is less than 50mg/m 3 The exhaust emission of the emission standard is far lower than the national emission index requirement.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present technical solution and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present technical solution.
In this disclosure, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present technical solution can be understood by those of ordinary skill in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present technology. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (7)
1. A fluid mixer, comprising:
a chamber comprising an inlet and an outlet;
the mixing element is internally provided with a plurality of baffling structures, and the space between the baffling structures forms a channel through which fluid passes;
the mixing element divides the interior of the cavity into a plurality of sub-cavity units, and a communication channel between the sub-cavity units is only the mixing element;
the baffling structure comprises an elastic structural part and a fixing part, and the elastic structural part is fixed on the inner wall of the cavity by the fixing part;
the elastic structural members are arranged in a crossed manner, and elastically deform under the action of the airflow flowing into the cavity;
and the inner wall of the sub cavity unit is provided with a vertical plate and/or a spiral plate.
2. The fluid mixer according to claim 1, wherein said inlet and said outlet are located at opposite ends of said chamber, and said sub-chamber units are arranged in series in a direction of a straight line connecting said inlet and said outlet.
3. The fluid mixer according to claim 2, wherein a distribution port is provided in the sub-chamber unit.
4. A combustion device comprising a fluid mixer according to any one of claims 1 to 3, and a combustion chamber in communication with said fluid mixer, said combustion chamber being provided with a burner and an igniter.
5. The combustion apparatus of claim 4, wherein said burner is a metal fiber surface burner; the mixing element is arranged below the metal fibers of the burner.
6. A method for treating a VOCs gas, characterized in that the VOCs gas is treated by the combustion apparatus according to any one of claims 4 or 5;
and directly conveying the VOCs gas into the combustion device or introducing the VOCs gas into the combustion device after passing through a pretreatment unit, wherein the pretreatment is one or more of wet desulphurization, condensation and adsorption.
7. The method according to claim 6, wherein the VOCs gas, the combustion-supporting gas and the air are simultaneously introduced into one of the sub-cavity units to be mixed; or
And the VOCs gas, the combustion-supporting gas and the air enter one sub-cavity unit at the same time and are mixed with a third person in the other sub-cavity unit.
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| CN202210536074.1A CN114632436B (en) | 2022-05-18 | 2022-05-18 | Fluid mixer, combustion device comprising same and treatment method of VOCs (volatile organic Compounds) gas |
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| CN202210536074.1A CN114632436B (en) | 2022-05-18 | 2022-05-18 | Fluid mixer, combustion device comprising same and treatment method of VOCs (volatile organic Compounds) gas |
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| CN114632436A (en) | 2022-06-17 |
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