CN214680961U - Ozone is ultraviolet in coordination's VOC organic waste gas treatment system device - Google Patents
Ozone is ultraviolet in coordination's VOC organic waste gas treatment system device Download PDFInfo
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- CN214680961U CN214680961U CN202022427772.7U CN202022427772U CN214680961U CN 214680961 U CN214680961 U CN 214680961U CN 202022427772 U CN202022427772 U CN 202022427772U CN 214680961 U CN214680961 U CN 214680961U
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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
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Abstract
The utility model provides a VOC organic waste gas treatment system device with ozone cooperating with ultraviolet, which comprises an ozone oxidation unit and a spraying absorption unit which are connected in sequence along the flow direction of flue gas; the ozone oxidation unit comprises a mixing device and an ozone generating device connected with the mixing device, and VOC organic waste gas is mixed with ozone by the mixing device and then is introduced into the spraying absorption unit; the spraying absorption unit comprises a spraying absorption device connected with the mixing device, and at least one ultraviolet lamp tube is arranged on the inner wall of the shell of the spraying absorption device. The utility model discloses having add ozone oxidation and ultraviolet light decomposition on the basis that sprays absorption technology, having utilized ozone to carry out oxidative decomposition to VOC organic waste gas and handling, utilize the ultraviolet to carry out the photocatalytic decomposition to the poisonous and harmful component in the VOC organic waste gas.
Description
Technical Field
The utility model belongs to the technical field of exhaust-gas treatment, a VOC organic waste gas treatment system device is related to, especially, relate to an ozone is ultraviolet VOC organic waste gas treatment system device in coordination.
Background
The VOC organic waste gas mainly comes from chemical waste gas, fluorine-containing benzene-containing waste gas, gaseous hydrocarbons, malodorous gas and the like discharged by various industries and is part of gaseous pollutants. It features easy combustion, explosion and poison, no water dissolution, high solubility in organic solvent and high treating difficulty.
With the rapid development of economy in the last decade, the explosive type of industrial enterprises is increased, the enterprises are more and more greedy in interests, and the shortage of environmental protection investment on a production line causes the emission of a large amount of VOC organic waste gas pollutants, so that the quality of the atmospheric environment is suddenly reduced, the human health is seriously harmed, and huge loss is caused to the national economy. Under the severe conditions, government attention is paid, and the environmental protection department sets the treatment of VOC organic waste gas as one of key assessment indexes.
The VOC organic waste gas treatment method mainly comprises an adsorption method, an absorption method, a catalytic combustion method and a thermal combustion method:
(1) the adsorption method can achieve a purification rate of over 95% by directly adsorbing the organic waste gas by active carbon. The advantages are simple equipment and low investment; however, the active carbon is frequently replaced, the working procedures of loading, unloading, transportation, replacement and the like are increased, the operation cost is increased, and the method is not suitable for the environment with high humidity. However, for commercial applications, activated carbon adsorption is one of the most commonly used techniques. Although the adsorption method can transfer some organic waste gas, the adsorption method actually addresses the symptoms and does not address the root causes, does not really eliminate the organic waste gas, and cannot radically solve the environmental protection problem.
(2) The absorption method generally adopts a physical absorption technology, introduces waste gas into absorption liquid for purification as the name suggests, and after the absorption liquid is saturated, the waste gas is heated, analyzed, condensed and recycled. The method is suitable for the waste gas with large gas quantity, low temperature and low concentration, but a heating, analyzing and recovering device is required, the equipment volume is large, and the investment is high.
(3) The catalytic combustion method is mainly characterized by heating waste gas, and converting the waste gas into harmless and odorless carbon dioxide and water through catalytic combustion. The catalytic combustion method has the advantages of low ignition temperature, energy conservation, high purification rate, convenient operation, small occupied area and larger investment, and is suitable for high-temperature or high-concentration organic waste gas.
(4) The principle of the thermal combustion method is to oxidize combustible waste gas into corresponding oxides and water at high temperature so as to purify the waste gas and recover the heat released during the decomposition of the waste gas, the decomposition efficiency of the waste gas reaches more than 99 percent, and the heat recovery efficiency reaches more than 95 percent.
The advantages of the thermal combustion treatment method are high purification rate, great flexibility in treating the flow rate of the organic waste gas, and capability of treating almost all waste gas containing organic compounds and organic waste gas with large air volume and low concentration. The disadvantages are that the investment cost is relatively high and the organic matters containing sulfur, nitrogen and halogen cannot be thoroughly purified and treated.
In general, the four organic waste gas treatment methods have advantages and disadvantages, and the most suitable waste gas treatment method is reasonably selected by combining the actual conditions of the four organic waste gas treatment methods when the waste gas treatment is carried out in various industries.
CN209138290U discloses a multistage shuffle spray tower device, which comprises a spray tower body, wherein the spray tower body is provided with an air inlet and an air outlet, the outer side of the spray tower body is provided with an air draft device and a water tank, and the air draft device is connected with the air inlet and conveys waste gas into the spray tower body. The utility model discloses a spray tower, including spray tower, spoiler, first turbulent flow device, anion spray device, nanometer microbubble spray device, second turbulent flow device and water retaining layer, be equipped with the spoiler in the spray tower body, the spoiler upwards is equipped with updraft ventilator, first spray device, first turbulent flow device, anion spray device, nanometer microbubble spray device, second turbulent flow device and water retaining layer in proper order. The air device blows the waste gas to the spoiler, and the waste gas passes through the first spraying device, the first turbulent flow device, the negative ion spraying device, the nanometer micro-bubble spraying device, the second turbulent flow device and the water retaining layer.
CN205379799U discloses a VOC organic waste gas treatment device, which comprises a spray absorption tower and an activated sludge tank. The bottom of the spray absorption tower and the bottom of the activated sludge tank are provided with a liquid level communicating pipe, and the side wall of the spray absorption tower is provided with a waste gas inlet. A spraying absorption cavity is arranged in the spraying absorption tower, and a spraying device is arranged in the spraying absorption cavity. The top of the spraying absorption tower is connected with an active carbon filter box through an exhaust conveying air pipe, and the active carbon filter box is connected with a fan through a conveying pipe. The fan is connected with an aeration pipe, the aeration pipe is arranged at the bottom of the activated sludge tank, and aeration nozzles are uniformly distributed on the aeration pipe.
CN209530471U discloses an equipment for VOC exhaust-gas treatment, including condensing equipment, with the dust collector of condensing equipment intercommunication and with the absorption tower of dust collector intercommunication, the absorption tower includes the tower body, locate the inside baffle of tower body, the packing layer sprays, spraying portion and defogging packing layer, open on the baffle surface has a set of through-hole, baffle all around with tower body inner wall rigid coupling, the baffle top is equipped with the packing layer that sprays with tower body inner wall rigid coupling, it is equipped with spraying portion to spray the packing layer top, spraying portion top is equipped with the defogging packing layer with tower body inner wall rigid coupling, the outside intercommunication in tower body lower part has the air-blower.
At present, waste absorption liquid generated by treating VOC (volatile organic compounds) organic waste gas by an absorption method cannot be effectively recycled, and in addition, the removal efficiency is low, and only low-concentration organic waste gas can be treated.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide an ozone is ultraviolet VOC organic waste gas treatment system device in coordination, the utility model discloses ozone oxidation and ultraviolet light decomposition have been add on the basis that sprays absorption technology, utilize ozone to carry out oxidative decomposition to VOC organic waste gas and handle, utilize the ultraviolet to carry out the photocatalysis to the poisonous and harmful component in the VOC organic waste gas and decompose.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a VOC organic waste gas treatment system device with ozone cooperating with ultraviolet, which comprises an ozone oxidation unit and a spraying absorption unit which are connected in sequence along the flow direction of flue gas;
the ozone oxidation unit comprises a mixing device and an ozone generating device connected with the mixing device, and VOC organic waste gas is mixed with ozone by the mixing device and then is introduced into the spraying absorption unit;
the spraying absorption unit comprises a spraying absorption device connected with the mixing device, and at least one ultraviolet lamp tube is arranged on the inner wall of the shell of the spraying absorption device.
The utility model adds ozone oxidation and ultraviolet light decomposition on the basis of the spraying absorption process, utilizes ozone to carry out oxidation decomposition treatment on VOC organic waste gas, can convert VOC into micromolecular harmless or low-harm compounds, realizes pollution-free or less pollution emission, accelerates the volatilization time of VOC, and improves the treatment efficiency of VOC; in VOC organic waste gas after ozone oxidation got into and sprays absorbing device, VOC organic waste gas in spraying absorbing device and absorption liquid contact, poisonous harmful component in the VOC organic waste gas is absorbed by the absorption liquid, all the other clean gas discharges to the atmosphere through the chimney in the waste gas, in the contact absorption process with the absorption liquid, the ultraviolet fluorescent tube shines VOC organic waste gas, carries out the photocatalysis to VOC organic waste gas and decomposes, the utility model provides a VOC organic waste gas processing system device has that the working costs is low, stability is good, purification efficiency is high and discharge up to standard advantage such as.
As an optimal technical scheme, the absorbing device that sprays include the casing, the casing top is provided with sprays the layer, the external circulating line in casing bottom, circulating line's exit end inserts the layer that sprays, the absorption liquid passes through circulating line and sprays the VOC organic waste gas circulation in getting into the casing.
As an optimized technical scheme, the layer of spraying including spray be responsible for and set up in spray and be responsible for last at least one atomizing nozzle, circulating line's exit end insert spray and be responsible for.
As an optimized technical proposal of the utility model, the ultraviolet lamp tube is arranged between the spray pond and the spray layer.
As an optimized technical scheme of the utility model, along vertical direction, hug closely shells inner wall interval is provided with at least one annular ultraviolet fluorescent tube.
The utility model discloses a set up annular ultraviolet fluorescent tube and can realize all-round shining waste gas, improved VOC organic waste gas's decomposition efficiency.
As an optimized technical proposal of the utility model, the inner wall of the shell is provided with 3 annular ultraviolet lamp tubes.
As an optimized technical proposal of the utility model, a gas uniform distribution plate is arranged between the spray pool and the ultraviolet lamp tube.
The gas uniform distribution plate is arranged in the utility model, so that the waste gas moves to the upper part of the spray absorption device under the state of uniform distribution, the absorption liquid is fully contacted with the waste gas, and the absorption efficiency of the absorption liquid on toxic and harmful components in the waste gas is improved; in addition, gaseous equipartition board still can reduce the velocity of flow of waste gas to the dwell time of extension waste gas in spraying absorbing device, in order to further improve the absorption efficiency of absorption liquid to poisonous and harmful component in the waste gas.
As an optimized technical proposal of the utility model, the circulating pipeline is provided with a sedimentation tank, an oxidation device and a circulating pump in sequence along the flow direction of the absorption liquid.
The VOC organic waste gas enters a spraying absorption device and contacts with absorption liquid in the spraying absorption device, toxic and harmful components in the VOC organic waste gas are absorbed by the absorption liquid, and the rest clean gas in the waste gas is discharged to the atmosphere through a chimney. Absorbing liquid containing toxic and harmful components in a spraying pool at the bottom of the spraying absorption device enters a sedimentation tank through a liquid outlet for sedimentation, supernatant in the sedimentation tank enters an oxidation device for oxidation treatment, and the absorbing liquid is returned to the spraying absorption device after regeneration for absorption treatment of VOC organic waste gas; and after the sedimentation tank operates for a certain period, the excessive sludge can enter the sludge concentration tank through the sewage outlet and be centrifugally dewatered to obtain a sludge cake. Thereby realizing the regeneration and the reutilization of the waste absorption liquid.
As an optimal technical scheme of the utility model, be close to the top exit that sprays absorbing device is provided with the defogging device.
As an optimized technical proposal, the top outlet of the spraying absorption device is externally connected with a chimney.
The system refers to an equipment system, or a production equipment.
Exemplarily, the utility model provides a VOC organic waste gas treatment system device's theory of operation is:
(1) the VOC organic waste gas is mixed and oxidized with ozone in a mixing device, and the oxidized organic waste gas enters a spraying absorption device to be in countercurrent contact with absorption liquid which is circularly sprayed;
(2) in the contact absorption process with the absorption liquid, toxic and harmful components in the VOC organic waste gas are absorbed by the absorption liquid, meanwhile, the ultraviolet lamp tube irradiates the VOC organic waste gas to carry out photocatalytic decomposition on the VOC organic waste gas, and the purified VOC organic waste gas is discharged into the atmosphere through a chimney;
(3) absorbing liquid containing toxic and harmful components collected in a spraying tank at the bottom of the spraying absorption device enters a sedimentation tank for sedimentation, supernatant in the sedimentation tank enters an oxidation device for oxidation treatment, and the absorbing liquid is returned to the spraying absorption device after regeneration for absorption treatment of VOC organic waste gas.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model adds ozone oxidation and ultraviolet light decomposition on the basis of the spraying absorption process, utilizes ozone to carry out oxidation decomposition treatment on VOC organic waste gas, can convert VOC into micromolecular harmless or low-harm compounds, realizes pollution-free or less pollution emission, accelerates the volatilization time of VOC, and improves the treatment efficiency of VOC; in VOC organic waste gas after ozone oxidation got into and sprays absorbing device, VOC organic waste gas in spraying absorbing device and absorption liquid contact, poisonous harmful component in the VOC organic waste gas is absorbed by the absorption liquid, all the other clean gas discharges to the atmosphere through the chimney in the waste gas, in the contact absorption process with the absorption liquid, the ultraviolet fluorescent tube shines VOC organic waste gas, carries out the photocatalysis to VOC organic waste gas and decomposes, the utility model provides a VOC organic waste gas processing system device has that the working costs is low, stability is good, purification efficiency is high and discharge up to standard advantage such as.
Drawings
Fig. 1 is a schematic structural diagram of a VOC organic waste gas treatment system device according to an embodiment of the present invention.
Wherein, 1-an ozone generating device; 2-a mixing device; 3-spraying and absorbing device; 4-spraying a pond; 5-gas uniform distribution plate; 6-ultraviolet lamp tube; 7-spraying layer; 8-a demisting device; 9-a circulating pump; 10-a sedimentation tank; 11-an oxidation unit; 12-chimney.
Detailed Description
It is to be understood that in the description of the present invention, the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality"
In a specific embodiment, the utility model provides a VOC organic waste gas treatment system device of ozone in coordination with ultraviolet, VOC organic waste gas treatment system device as shown in figure 1, include along the ozone oxidation unit that the flue gas flow direction connects gradually and spray the absorption unit. The ozone oxidation unit comprises a mixing device 2 and an ozone generating device 1 connected with the mixing device, and the VOC organic waste gas is mixed with ozone through the mixing device 2 and then is introduced into the spraying absorption unit. The utility model adds ozone oxidation and ultraviolet light decomposition on the basis of the spraying absorption process, utilizes ozone to carry out oxidation decomposition treatment on VOC organic waste gas, can convert VOC into micromolecular harmless or low-harm compounds, realizes pollution-free or less pollution emission, accelerates the volatilization time of VOC, and improves the treatment efficiency of VOC; in VOC organic waste gas after ozone oxidation got into spray absorbing device 3, VOC organic waste gas contacted with the absorption liquid in spray absorbing device 3, poisonous harmful component in the VOC organic waste gas was absorbed by the absorption liquid, all the other clean gas discharged to the atmosphere through chimney 12 in the waste gas, in the contact absorption process with the absorption liquid, ultraviolet fluorescent tube 6 shines VOC organic waste gas, carries out the photocatalytic decomposition to VOC organic waste gas, the utility model provides a VOC organic waste gas treatment system device has that the working costs is low, stability is good, purification efficiency is high and advantages such as discharge up to standard.
The spraying and absorbing device 3 comprises a shell, a spraying layer 7 is arranged at the top of the shell, a circulating pipeline is externally connected to the bottom of the shell, the outlet end of the circulating pipeline is connected to the spraying layer 7, and absorbing liquid circularly sprays VOC organic waste gas entering the shell through the circulating pipeline. The spraying layer 7 comprises a spraying main pipe and at least one atomizing nozzle arranged on the spraying main pipe, and the outlet end of the circulating pipeline is connected into the spraying main pipe.
The ultraviolet lamp tube 6 is arranged between the spraying tank 4 and the spraying layer 7. At least one annular ultraviolet lamp tube 6 is arranged on the inner wall of the shell in a clinging mode along the vertical direction at intervals, all-dimensional irradiation of waste gas can be achieved through the annular ultraviolet lamp tubes 6, and the decomposition efficiency of VOC organic waste gas is improved. Furthermore, the inner wall of the shell is provided with 3 annular ultraviolet lamp tubes 6.
A gas uniform distribution plate 5 is arranged between the spray pool 4 and the ultraviolet lamp tube 6, and the gas uniform distribution plate 5 is arranged to uniformly distribute the waste gas entering the spray absorption device 3, so that the waste gas moves to the upper part of the spray absorption device 3 in a uniformly distributed state, the absorption liquid is fully contacted with the waste gas, and the absorption efficiency of the absorption liquid on toxic and harmful components in the waste gas is improved; in addition, gaseous equipartition board 5 still can reduce the velocity of flow of waste gas to the dwell time of extension waste gas in spraying absorbing device 3 is in order to further improve the absorption efficiency of absorption liquid to poisonous and harmful component in the waste gas.
The circulating pipeline is sequentially provided with a sedimentation tank 10, an oxidation device 11 and a circulating pump 9 along the flow direction of the absorption liquid. And a demisting device 8 is arranged at the outlet close to the top of the spray absorption device 3. The top outlet of the spray absorption device 3 is externally connected with a chimney 12.
In another embodiment, the present invention provides a method for treating VOC organic waste gas by using the above treatment system, said method comprising:
(1) the VOC organic waste gas is mixed and oxidized with ozone in the mixing device 2, and the oxidized organic waste gas enters the spraying absorption device 3 to be in countercurrent contact with the circularly sprayed absorption liquid;
(2) in the contact absorption process with the absorption liquid, toxic and harmful components in the VOC organic waste gas are absorbed by the absorption liquid, meanwhile, the ultraviolet lamp tube 6 irradiates the VOC organic waste gas to carry out photocatalytic decomposition on the VOC organic waste gas, and the purified VOC organic waste gas is discharged into the atmosphere through a chimney 12;
(3) the absorption liquid containing toxic and harmful components in the spray tank 4 at the bottom of the spray absorption device 3 enters the sedimentation tank 10 for sedimentation, the supernatant in the sedimentation tank 10 enters the oxidation device 11 for oxidation treatment, and the absorption liquid is returned to the spray absorption device 3 after regeneration to absorb VOC organic waste gas.
The applicant states that the above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure scope of the present invention.
Claims (10)
1. The VOC organic waste gas treatment system device with ozone cooperating with ultraviolet is characterized by comprising an ozone oxidation unit and a spraying absorption unit which are sequentially connected along the flow direction of flue gas;
the ozone oxidation unit comprises a mixing device and an ozone generating device connected with the mixing device, and VOC organic waste gas is mixed with ozone by the mixing device and then is introduced into the spraying absorption unit;
the spraying absorption unit comprises a spraying absorption device connected with the mixing device, and at least one ultraviolet lamp tube is arranged on the inner wall of the shell of the spraying absorption device.
2. The VOC organic waste gas treatment system device of claim 1, wherein said spray absorption device comprises a housing, a spray layer is disposed on the top of said housing, a circulation pipeline is externally connected to the bottom of said housing, the outlet end of said circulation pipeline is connected to said spray layer, and the absorption liquid circularly sprays the VOC organic waste gas entering the housing through the circulation pipeline.
3. A VOC organic waste gas treatment system device according to claim 2, wherein the spray layer comprises a main spray pipe and at least one atomizing nozzle disposed on the main spray pipe, and the outlet end of the circulation pipe is connected to the main spray pipe.
4. A VOC organic exhaust treatment system device according to claim 2, wherein the uv lamp is placed between the spray tank and the spray layer.
5. A VOC organic exhaust gas treatment system device according to claim 1, wherein at least one annular ultraviolet lamp is spaced along the vertical direction next to the inner wall of the housing.
6. A VOC organic waste gas treatment system as claimed in claim 5, wherein said inner wall of said housing is provided with 3 ultraviolet lamps in the shape of a ring.
7. A VOC waste organic gas processing system as claimed in claim 4, wherein a gas distribution plate is disposed between said spray tank and said ultraviolet lamp tube.
8. A VOC organic waste gas treatment system device according to claim 2, wherein said circulation pipeline is provided with a sedimentation tank, an oxidation device and a circulation pump in order along the flow direction of the absorption liquid.
9. A VOC organic waste gas treatment system device according to claim 1, wherein a demister is provided near the top outlet of the spray absorber.
10. A VOC organic waste gas treatment system device according to claim 1, wherein the top outlet of the spray absorption device is externally connected with a chimney.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115364648A (en) * | 2022-08-29 | 2022-11-22 | 安徽元浩环保科技有限公司 | Small-size exhaust-gas treatment all-in-one of movable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115364648A (en) * | 2022-08-29 | 2022-11-22 | 安徽元浩环保科技有限公司 | Small-size exhaust-gas treatment all-in-one of movable |
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