CN115090087A - Waste gas nano-technology treatment device and treatment method - Google Patents
Waste gas nano-technology treatment device and treatment method Download PDFInfo
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- CN115090087A CN115090087A CN202210622448.1A CN202210622448A CN115090087A CN 115090087 A CN115090087 A CN 115090087A CN 202210622448 A CN202210622448 A CN 202210622448A CN 115090087 A CN115090087 A CN 115090087A
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Images
Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- 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
- B01D53/75—Multi-step processes
-
- 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
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a waste gas nano-technology treatment device which comprises an atomization spray tower I, an atomization spray tower II, an atomization spray tower III and a filter box, wherein the atomization spray tower I, the atomization spray tower II, the atomization spray tower III and the filter box are sequentially connected, and the filter box comprises an atomization decomposition area, a primary filter screen, demisting filter cotton and a PM2.5 high-efficiency filter which are sequentially connected. The treatment method comprises the following steps: (1) preparation of SiO 2 Aerogel, and surface modification is carried out by utilizing a silane coupling agent; (2) modifying the SiO 2 Mixing aerogel, a dispersing agent and water, and grinding to obtain a waste gas treating agent; (3) respectively adding a waste gas treating agent into the atomization spray tower I, the atomization spray tower II and the atomization spray tower III; (4) industrial organic waste gas is collected and sequentially passes through an atomization spray tower I and an atomization spray tower IIThe atomizing spray tower III, the atomizing decomposition area, the primary filter screen, the demisting filter cotton and the PM2.5 high efficiency filter can discharge after reaching the standard. The invention has low operation cost, low energy consumption and good treatment effect.
Description
Technical Field
The invention relates to the technical field of waste gas treatment equipment, in particular to a waste gas nano-technology treatment device and a waste gas nano-technology treatment method.
Background
The industrial organic waste gas treatment refers to the treatment work of adsorbing, filtering and purifying the organic waste gas generated in the industrial production process. The industrial organic waste gas generally has the characteristics of flammability, explosiveness, toxicity, harm, insolubility in water, solubility in organic solvent and great treatment difficulty.
At present, the industrial organic waste gas treatment includes air purification treatment methods of organic substances containing carbon, hydrogen and oxygen, such as formaldehyde organic waste gas treatment, benzene series organic waste gas treatment such as benzene toluene xylene, acetone butanone organic waste gas treatment, ethyl acetate waste gas treatment, oil mist organic waste gas treatment, furfural organic waste gas treatment, styrene and acrylic acid organic waste gas treatment, resin organic waste gas treatment, additive organic waste gas treatment, paint mist organic waste gas treatment, and Tianna water organic waste gas treatment.
However, the industrial organic waste gas treatment process in the prior art has high operation cost, high energy consumption and undesirable treatment effect.
Therefore, how to develop an organic waste gas treatment process with low operation cost, low energy consumption and good treatment effect is a problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention provides a device and a method for treating exhaust gas by nano-technology to solve the deficiencies in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a waste gas nanometer process treatment device comprises an atomization spray tower I, an atomization spray tower II, an atomization spray tower III and a filter box, wherein the atomization spray tower I, the atomization spray tower II, the atomization spray tower III and the filter box are sequentially connected; the rose box includes that atomizing decomposition district, primary effect filter screen, defogging filter pulp and PM2.5 high efficiency filter, and atomizing spray column III connects gradually with atomizing decomposition district, primary effect filter screen, defogging filter pulp, PM2.5 high efficiency filter.
In the invention, the primary filter screen is used for blocking water drops or large particles, and the PM2.5 high-efficiency filter is used for drying air so as to prevent the probe from being influenced.
Furthermore, above-mentioned waste gas nanometer technology processing apparatus still includes the drain pipe, and the one end and the rose box of drain pipe are connected, and the other end is connected with atomizing spray column I.
Further, the waste gas nanometer process treatment device further comprises a centrifugal fan, a silencer and a discharge pipeline, wherein the PM2.5 high-efficiency filter is sequentially connected with the centrifugal fan, the silencer and the discharge pipeline.
Furthermore, above-mentioned waste gas nanometer technology processing apparatus still includes input pipeline and return air duct, and input pipeline and atomizing spray column I are connected, and return air duct's one end is connected with discharge pipe, and the other end is connected with input pipeline.
Furthermore, the waste gas nanometer technology processing apparatus further comprises an air valve I and an air valve II, wherein the air valve I is arranged in the return air pipeline and is close to one end of the discharge pipeline, and the air valve II is arranged in the return air pipeline and is close to one end of the input pipeline.
Furthermore, the waste gas nanometer process treatment device further comprises an air valve III and a detection port, wherein the air valve III is arranged in the high-altitude discharge pipeline, and the detection port is arranged on the high-altitude discharge pipeline and is positioned above the air valve III.
The air valve III has the advantages that about 20% -30% of gas can flow back to the input pipeline through the return air pipeline, and reaction time of full treatment is achieved.
The treatment method of the waste gas nano-technology treatment device specifically comprises the following steps:
(1) preparation of SiO 2 Aerogel and SiO by using silane coupling agent 2 Carrying out surface modification on the aerogel to obtain modified SiO 2 An aerogel;
(2) modifying the SiO 2 Mixing aerogel, a dispersing agent and water, and grinding to obtain a waste gas treating agent;
(3) respectively adding a waste gas treating agent into the atomization spray tower I, the atomization spray tower II and the atomization spray tower III;
(4) collect industrial organic waste gas, loop through atomizing spray column I, atomizing spray column II, atomizing spray column III, atomizing decomposition district, first effect filter screen, defogging filter pulp and PM2.5 high efficiency filter, can discharge to reach standard.
Further, in the step (1), the silane coupling agent is methyltrimethoxysilane and/or methyltriethoxysilane.
Further, in the step (2), the dispersant is polyaspartic acid sodium and/or polyglutamic acid; the effective content of the waste gas treating agent is 1-5%.
According to the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the industrial organic waste gas to be treated is introduced into an atomizing spray tower I to filter large particles; introducing the waste gas into an atomization spray tower II for waste gas pretreatment and preliminary reaction, and decomposing part of waste gas; the industrial organic waste gas and the waste gas treating agent can fully react by introducing the industrial organic waste gas into an atomization spray tower III for a supplementary reaction; leading-in rose box (reation kettle), set up a plurality of atomising head shower nozzles in the rose box, can make the fog intensive mixing that air current and exhaust-gas treatment agent produced, thoroughly take place the reaction with industrial organic waste gas, make gas emission up to standard.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an exhaust gas nano-process treatment device provided by the invention.
The device comprises a 1-atomization spray tower I, a 2-atomization spray tower II, a 3-atomization spray tower III, a 4-filter box, a 5-atomization decomposition area, a 6-primary filter screen, 7-demisting filter cotton, an 8-PM2.5 high-efficiency filter, a 9-drain pipe, a 10-centrifugal fan, a 11-silencer, a 12-discharge pipeline, a 13-input pipeline, a 14-return air pipeline, a 15-air valve I, a 16-air valve II, a 17-air valve III and a 18-detection port.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The embodiment of the invention discloses a waste gas nano-technology treatment device which comprises an atomization spray tower I1, an atomization spray tower II 2, an atomization spray tower III 3 and a filter box 4, wherein the atomization spray tower I1, the atomization spray tower II 2, the atomization spray tower III 3 and the filter box 4 are sequentially connected; the rose box 4 includes that atomizing decomposition district 5, primary filter screen 6, defogging filter pulp 7 and PM2.5 high efficiency filter 8, and atomizing spray column III 3 and atomizing decomposition district 5, primary filter screen 6, defogging filter pulp 7, PM2.5 high efficiency filter 8 connect gradually. In the present invention, the primary filter screen 6 is used to block water drops or large particles, and the PM2.5 high efficiency filter 8 is used to dry the air to prevent the probe from being affected.
In one embodiment, the waste gas nanometer process treatment device further comprises a drain pipe 9, one end of the drain pipe 9 is connected with the filter box 4, and the other end of the drain pipe 9 is connected with the atomization spray tower I1.
In one embodiment, the exhaust gas nano-technology treatment device further comprises a centrifugal fan 10, a silencer 11 and an exhaust pipeline 12, and the PM2.5 high-efficiency filter 8 is connected with the centrifugal fan 10, the silencer 11 and the exhaust pipeline 12 in sequence.
In one embodiment, the waste gas nano-technology treatment device further comprises an input pipeline 13 and an air return pipeline 14, wherein the input pipeline 13 is connected with the atomizing spray tower I1, one end of the air return pipeline 14 is connected with the discharge pipeline 12, and the other end of the air return pipeline 14 is connected with the input pipeline 13.
In one embodiment, the upper exhaust gas nano-technology processing device further comprises an air valve I15 and an air valve II 16, wherein the air valve I15 is arranged in the air return pipeline 14 and close to one end of the discharge pipeline 12, and the air valve II 16 is arranged in the air return pipeline 14 and close to one end of the input pipeline 13.
In one embodiment, the exhaust gas nano-technology processing device further comprises an air valve III 17 and a detection port 18, wherein the air valve III 17 is arranged in the high-altitude discharge pipeline 12, and the detection port 18 is arranged on the high-altitude discharge pipeline 12 and is positioned above the air valve III 17. The damper III 17 enables approximately 20-30% of the gas to be returned to the inlet line 13 via the return line 14 for a sufficient reaction time for disposal.
Example 1
The treatment method of the waste gas nano-technology treatment device specifically comprises the following steps:
(1) preparation of SiO 2 Aerogel prepared by reacting SiO with methyltrimethoxysilane 2 Carrying out surface modification on the aerogel to obtain modified SiO 2 An aerogel;
wherein TEOS (tetraethoxysilane) is used as a precursor, 0.01mol/L HCl (hydrochloric acid) and 0.5mol/LNH 3 ·H 2 O (ammonia water) is an acid-base catalyst, TMCS (trimethylchlorosilane) is a surface modifier, and hydrophobic SiO is prepared by adopting an acid-base catalysis sol-gel two-step method 2 The aerogel is prepared by the following specific steps:
first, 5.75mL TEOS, 15mL EtOH (ethanol), and 1mL DI · H 2 Adding O (deionized water) into the beaker, uniformly stirring, adding 0.3mL of HCl, continuously stirring for 5min, sealing the beaker, and putting the beaker into a water bath kettle at 45 ℃ for hydrolysis for 12 h; after the hydrolysis was complete, 0.5mL of NH was added with stirring 3 ·H 2 O, standing after continuously stirring for 3min, wherein the gelation generally occurs within 30 min; aging the gel in a water bath kettle at 45 ℃ for 4h, then adding a proper amount of EtOH (completely immersing the gel) to exchange pore water in a wet gel framework, and replacing the EtOH for 1 time every 12h for 2 times; adding a proper amount of n-hexane to exchange ethanol in the wet gel skeleton, and changing n-hexane for 1 time every 12 hours for 2 times; adding 6mL of TMCS into 44m Ln-hexane to prepare a surface modification mixed solution, adding the surface modification mixed solution into wet gel, then putting the wet gel into a water bath kettle at 45 ℃ for modification for 12h, then taking out the modified wet gel, and cleaning residual TMCS on the surface by using n-hexane; finally, the modified wet gel is placed in an oven at 120 ℃ for drying for 4h to obtain hydrophobic SiO 2 An aerogel;
prepared hydrophobic SiO 2 Grinding the aerogel into powder, and sieving the powder by a standard sieve with 100 meshes; taking a proper amount of SiO 2 Placing aerogel powder in quartz crucible, and filling with SiO 2 Putting a quartz crucible of aerogel powder into a tubular furnace (OtF-1200X of Hefei Keke), introducing high-purity argon (more than or equal to 99.999 percent) into the tubular furnace to remove air in the tube, keeping the ventilation pressure at 0.3MPa, carrying out heat treatment at 700 ℃ for 2h, wherein the heating rate is set to be 10 ℃/min; finally, cooling according to the operation rule of the tube furnace to obtain the product;
(2) modifying the SiO 2 Mixing aerogel, sodium polyaspartate and water, and grinding by using a sand mill to obtain a waste gas treating agent with the effective content of 1-5%;
(3) respectively adding a waste gas treating agent into the atomization spray tower I1, the atomization spray tower II 2 and the atomization spray tower III 3;
(4) collect industrial organic waste gas, loop through atomizing spray column I1, atomizing spray column II 2, atomizing spray column III 3, atomizing decomposition area 5, primary filter screen 6, defogging filter pulp 7 and PM2.5 high efficiency filter 8, can discharge to reach standard.
Example 2
The treatment method of the waste gas nano-technology treatment device specifically comprises the following steps:
(1) preparation of SiO 2 Aerogel prepared by reacting SiO with methyltriethoxysilane 2 Carrying out surface modification on the aerogel to obtain modified SiO 2 An aerogel;
wherein TEOS (tetraethoxysilane) is used as a precursor, 0.01mol/L HCl (hydrochloric acid) and 0.5mol/LNH 3 ·H 2 O (ammonia) is an acid-base catalyst, TMCS (trimethylchlorosilane) is a surface modifier, and the hydrophobic SiO is prepared by adopting an acid-base catalysis sol-gel two-step method 2 The aerogel is prepared by the following specific steps:
first, 5.75mL TEOS, 15mL EtOH (ethanol), and 1mL DI · H 2 Adding O (deionized water) into the beaker, uniformly stirring, adding 0.3mL of HCl, continuously stirring for 5min, sealing the beaker, and putting the beaker into a water bath kettle at 45 ℃ for hydrolysis for 12 h; after the hydrolysis was complete, 0.5mL of NH was added with stirring 3 ·H 2 O, standing after continuous stirring for 3min, the gelling usually taking placeWithin 30 min; aging the gel in a water bath kettle at 45 ℃ for 4h, then adding a proper amount of EtOH (completely immersing the gel) to exchange pore water in a wet gel framework, and replacing the EtOH for 1 time every 12h for 2 times; adding a proper amount of n-hexane to exchange ethanol in the wet gel framework, and changing the n-hexane for 1 time every 12 hours for 2 times; adding 6mL of TMCS into 44m Ln-hexane to prepare a surface modification mixed solution, adding the surface modification mixed solution into wet gel, then putting the wet gel into a water bath kettle at 45 ℃ for modification for 12h, then taking out the modified wet gel, and cleaning residual TMCS on the surface by using n-hexane; finally, the modified wet gel is placed in an oven at 120 ℃ for drying for 4h to obtain hydrophobic SiO 2 An aerogel;
prepared hydrophobic SiO 2 Grinding the aerogel into powder, and sieving the powder by a standard sieve with 100 meshes; taking a proper amount of SiO 2 Placing aerogel powder in quartz crucible, and filling with SiO 2 Putting a quartz crucible of aerogel powder into a tubular furnace (OtF-1200X of Hefei Keke), introducing high-purity argon (more than or equal to 99.999 percent) into the tubular furnace to remove air in the tube, keeping the ventilation pressure at 0.3MPa, carrying out heat treatment at 700 ℃ for 2h, wherein the heating rate is set to be 10 ℃/min; finally, cooling according to the operation rule of the tube furnace to obtain the product;
(2) modifying the SiO 2 Mixing aerogel, polyglutamic acid and water, and grinding by using a sand mill to obtain a waste gas treating agent with the effective content of 1-5%;
(3) respectively adding a waste gas treatment agent into the atomization spray tower I1, the atomization spray tower II 2 and the atomization spray tower III 3;
(4) collect industrial organic waste gas, loop through atomizing spray column I1, atomizing spray column II 2, atomizing spray column III 3, atomizing decomposition district 5, primary filter screen 6, defogging filter pulp 7 and PM2.5 high efficiency filter 8, can discharge to reach standard.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means 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 invention. 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 described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The waste gas nanometer process treatment device is characterized by comprising an atomization spray tower I, an atomization spray tower II, an atomization spray tower III and a filter box, wherein the atomization spray tower I, the atomization spray tower II, the atomization spray tower III and the filter box are sequentially connected;
the rose box includes that the atomizing decomposes district, primary filter screen, defogging filter pulp and PM2.5 high efficiency filter, the atomizing spray column III with the atomizing decomposes the district the primary filter screen the defogging filter pulp the PM2.5 high efficiency filter connects gradually.
2. The waste gas nano-technology treatment device according to claim 1, further comprising a drain pipe, wherein one end of the drain pipe is connected with the filter box, and the other end of the drain pipe is connected with the atomization spray tower I.
3. The nano-technology exhaust gas treatment device according to claim 2, further comprising a centrifugal fan, a silencer and an exhaust pipe, wherein the PM2.5 high-efficiency filter is connected with the centrifugal fan, the silencer and the exhaust pipe in sequence.
4. The waste gas nano-technology processing device as claimed in claim 3, further comprising an input pipeline and an air return pipeline, wherein the input pipeline is connected with the atomization spray tower I, one end of the air return pipeline is connected with the discharge pipeline, and the other end of the air return pipeline is connected with the input pipeline.
5. The nano-technology waste gas treatment device as claimed in claim 4, further comprising an air valve I and an air valve II, wherein the air valve I is arranged in the return air pipeline and close to one end of the discharge pipeline, and the air valve II is arranged in the return air pipeline and close to one end of the input pipeline.
6. The waste gas nano-technology processing device as claimed in claim 5, further comprising an air valve III and a detection port, wherein the air valve III is arranged in the high-altitude discharge pipeline, and the detection port is arranged on the high-altitude discharge pipeline and above the air valve III.
7. The method for treating the exhaust gas nano-process treatment device according to any one of claims 1 to 6, comprising the following steps:
(1) preparation of SiO 2 Aerogel and SiO by using silane coupling agent 2 Carrying out surface modification on the aerogel to obtain modified SiO 2 An aerogel;
(2) modifying the SiO 2 Mixing aerogel, dispersing agent and water, and grinding to obtain a waste gas treating agent;
(3) respectively adding a waste gas treating agent into the atomization spray tower I, the atomization spray tower II and the atomization spray tower III;
(4) collect industrial organic waste gas, loop through atomizing spray column I, atomizing spray column II, atomizing spray column III, atomizing decomposition zone, first effect filter screen, defogging filter pulp and PM2.5 high efficiency filter, can discharge to reach standard.
8. The method as claimed in claim 7, wherein in step (1), the silane coupling agent is methyltrimethoxysilane and/or methyltriethoxysilane.
9. The method as claimed in claim 7, wherein in the step (2), the dispersant is polyaspartic acid sodium and/or polyglutamic acid.
10. The method as claimed in claim 7, wherein in the step (2), the effective content of the waste gas treatment agent is 1-5%.
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