CN210934447U - Device for combined treatment of malodorous gas - Google Patents
Device for combined treatment of malodorous gas Download PDFInfo
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- CN210934447U CN210934447U CN201921493712.6U CN201921493712U CN210934447U CN 210934447 U CN210934447 U CN 210934447U CN 201921493712 U CN201921493712 U CN 201921493712U CN 210934447 U CN210934447 U CN 210934447U
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Abstract
The utility model relates to a gaseous technical field that purifies especially relates to a combined treatment foul gas's device, including scrubbing tower, oxidation tower, washing circulation tank, spray circulation tank and ozone water generator, foul gas passes through the pipeline, fan and spark arrester and is connected with the inlet end of scrubbing tower, the end of giving vent to anger of scrubbing tower passes through the pipeline and is connected with the inlet end of oxidation tower, the inside fixedly connected with spraying system of oxidation tower, spraying system is connected with washing circulation tank through pipeline and pump respectively, the bottom of scrubbing tower goes out the water end and passes through the pipeline and is connected with washing circulation tank. The utility model discloses an utilize UV photodissociation technique, ozone oxidation's processing technology and photooxidation technique combination technology to handle foul gas, make it can be quick effectual produce a large amount of hydroxyl free radicals, make its treatment effect to foul gas improve by a wide margin.
Description
Technical Field
The utility model relates to a gas purification technical field especially relates to a device of combined treatment foul gas.
Background
Because the air quality has important influence on a plurality of fields of social production and social life, the quality and protection of the atmospheric environment are more and more concerned and paid attention by people, the pollution of malodorous gas becomes one of the major problems of atmospheric environment pollution, and industrial production, municipal sewage, sludge treatment and garbage disposal facilities are main sources of malodorous gas and corresponding production sources of chemical pharmacy, rubber plastics, paint and coating, printing and dyeing leather, food, livestock breeding and fermentation pharmacy.
The malodorous substances are various in types and wide in sources, and can cause poisoning to human breathing, digestion, cardiovascular, endocrine and nervous systems in different degrees, wherein aromatic compounds such as benzene, toluene and styrene can also cause deformity and canceration of human bodies, so that the treatment of malodorous gases has attracted high attention, most of the malodorous gases in the market at present are treated in a single treatment mode, for example, an ultraviolet lamp is adopted in a UV photolysis device to irradiate the malodorous gases, so that oxygen and water contained in the malodorous gases are converted into hydroxyl groups, and the malodorous gases are treated, but the generated hydroxyl groups are insufficient due to the fact that the content of the oxygen and the water in the malodorous gases is low, the purification requirement of the malodorous gases cannot be met, and the treatment effect is poor.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Not enough to prior art, the utility model provides a device of combined treatment foul gas possesses the advantage of being convenient for handle foul gas, has solved and has adopted single mode to handle, and hydroxyl free radical production volume is less, and it is not good to handle foul gas effect, the unable problem of discharge to reach standard.
(II) technical scheme
In order to realize the technical problem, the utility model provides a such device of combined treatment foul gas, including scrubbing tower, oxidation tower, washing circulation tank, spray circulation tank and ozone water generator, foul gas passes through the pipeline, fan and spark arrester and is connected with the inlet end of scrubbing tower, the end of giving vent to anger of scrubbing tower passes through the pipeline and is connected with the inlet end of oxidation tower, the inside fixedly connected with spraying system of oxidation tower, spraying system is connected with washing circulation tank through pipeline and pump respectively, the bottom outlet end of scrubbing tower passes through the pipeline and is connected with washing circulation tank.
The spraying circulating water tank is connected with an ozone water inlet end of the ozone water generator through a pipeline and a pump, an outlet end of the ozone water generator is connected with a spraying system in the middle of the oxidation tower through a pipeline, and a water discharging end at the bottom of the oxidation tower is connected with the spraying circulating water tank through a pipeline.
Furthermore, the oxidation tower is operated at normal pressure, the operating temperature of the oxidation tower is 20-25 ℃, the spray system is fixedly connected with a micro-mist nozzle, and the top inside the washing tower is fixedly connected with a spray device.
Further, the middle part of the oxidation tower is fixedly connected with bulk filler, the surface of the bulk filler is coated with metal oxide, and the metal oxide is Al2O3、TiO2Or MnO2One of them.
Further, the bottom inside the oxidation tower is fixedly connected with an ultraviolet lamp, the top inside the oxidation tower is fixedly connected with a demister, and the demister is of a stainless steel wire mesh structure.
(III) advantageous effects
The utility model provides a device of combined treatment foul gas possesses following beneficial effect:
1. according to the combined treatment device and the treatment method for the malodorous gas, the malodorous gas is treated by utilizing the combined process of the UV photolysis technology, the ozone oxidation treatment technology and the photooxidation technology, so that a large amount of hydroxyl radicals can be rapidly and effectively generated, and the treatment effect of the malodorous gas is greatly improved.
2. According to the combined device and the combined method for treating the malodorous gas, the ultraviolet lamp is adopted to irradiate ozone to generate hydroxyl radicals, so that the malodorous factor pollutants in the malodorous gas are subjected to rapid and effective deep oxidation treatment, and the VOC pollutants are rapidly and thoroughly degraded into substances harmless to the environment.
3. This combination is handled foul gas's device and processing method, owing to be plus a large amount of ozone and react, can effectively produce a large amount of hydroxyl free radicals, carry out oxidation treatment to the organic pollutant in the gas, for other single ozone oxidation reactions on the market or the method that oxygen and water in the direct oxidation foul gas of ultraviolet lamp produced a small amount of hydroxyl free radicals, the utility model discloses the hydroxyl free radical volume that produces is big, strong adaptability, and the processing speed is fast, and area reduces greatly.
Drawings
FIG. 1 is a schematic flow chart of the present invention;
fig. 2 is a schematic structural diagram of the oxidation tower of the present invention.
In the figure: 1. a washing tower; 2. an oxidation tower; 3. a washing circulation water tank; 4. a spray circulation water tank; 5. an ozone water generator; 6. bulk filling; 7. a spray system; 8. an ultraviolet lamp; 9. a foam remover.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, a device for combined treatment of malodorous gas comprises a washing tower 1, an oxidation tower 2, a washing circulation water tank 3, a spraying circulation water tank 4 and an ozone water generator 5, wherein the malodorous gas is connected with the air inlet end of the washing tower 1 through a pipeline, a fan and a flame arrester, the air outlet end of the washing tower 1 is connected with the air inlet end of the oxidation tower 2 through a pipeline, a spraying system 7 is fixedly connected inside the oxidation tower 2, the spraying system 7 is respectively connected with the washing circulation water tank 3 through a pipeline and a pump, and the water outlet end at the bottom of the washing tower 1 is connected with the washing circulation water tank 3 through a pipeline.
The spraying circulating water tank 4 is connected with an ozone water inlet end of the ozone water generator 5 through a pipeline and a pump, an outlet end of the ozone water generator 5 is connected with a spraying system 7 in the middle of the oxidation tower 2 through a pipeline, and a water discharging end at the bottom of the oxidation tower 2 is connected with the spraying circulating water tank 4 through a pipeline.
The oxidation tower 2 is operated under normal pressure, the operation temperature of the oxidation tower 2 is 20-25 ℃, a micro-mist nozzle is fixedly connected on the spraying system 7, the middle part of the oxidation tower 2 is fixedly connected with a bulk filler 6, the surface of the bulk filler 6 is coated with a metal oxide, and the metal oxide is Al2O3、TiO2Or MnO2One of them, the inside top fixedly connected with spray set of scrubbing tower 1, the inside bottom fixedly connected with ultraviolet lamp 8 of oxidation tower 2, the inside top fixedly connected with demister 9 of oxidation tower 2, and demister 9 is the stainless steel wire net structure.
In addition, the utility model also discloses a processing method of the combined malodorous gas treatment device, which comprises the following steps;
step one, the foul gas passes through the inlet end that collection system and pipeline and fan got into the scrubbing tower, the inside spray set of scrubbing tower can spray the washing to the foul gas that gets into, played the effect of dust removal, deoiling, the cooling, the main effect of spraying the washing is got rid of the dust particulate matter in the foul gas, and carry out the cooling treatment to the foul gas, with the temperature control of foul gas at 20-25 degrees centigrade, conveniently get into subsequent system, when the foul gas does not contain the dust and the temperature satisfies the requirement that gets into subsequent system, can skip this step.
And step two, the pretreated water after spraying and washing flows into a washing circulating water tank through a drainage end at the bottom of the washing tower for natural sedimentation treatment, supernatant liquid after natural sedimentation is conveyed to a spraying device in the washing tower 1 again through a pipeline and a pump to spray, wash and cool the malodorous gas, a temperature measuring device is arranged at the outlet of the washing tower to detect the temperature of the malodorous gas out of the washing tower, and when the temperature at the outlet of the washing tower is overhigh, the spraying water quantity of the spraying washing pump can be adjusted by a control system to control so as to meet the temperature control requirement.
And step three, the washed malodorous gas enters the air inlet end of the oxidation tower through a pipeline, the airflow direction in the oxidation tower is from bottom to top, the atomized particle size of a fine atomizing nozzle in the oxidation tower is 20-40 microns, ozone water is sprayed out from the fine atomizing nozzle and is fully contacted with the entered malodorous gas, meanwhile, ozone gas in the ozone water reacts under the irradiation of an ultraviolet lamp to generate hydroxyl radicals, the hydroxyl radicals and malodorous factors in the malodorous gas are subjected to oxidation reaction to be oxidized into carbon dioxide and water, and at the moment, most of the malodorous factors are removed.
And fourthly, in the oxidation tower, a spraying system at the bottom of the bulk packing sprays ozone water downwards, metal oxides are coated on the surface of the bulk packing, the metal oxides can catalyze water molecules in the raised malodorous gas and part of uncatalyzed ozone gas into hydroxyl radicals for the second time under the irradiation of light, the secondary contact is carried out in the bulk packing more sufficiently, the malodorous factors are oxidized for the second time for a longer time, the complete removal of the malodorous factors is ensured, the gas with the malodorous factors removed is treated by the second-level bulk packing at the upper part, water drops contained in the gas are removed by a demister at the top in the oxidation tower to reach the emission standard, and the purified harmless gas is subjected to evacuation treatment by a chimney.
And fifthly, the sprayed liquid drops flow to the bottom of the oxidation tower and flow to a spraying circulating water tank under the action of gravity, water in the spraying circulating water tank enters an ozone water generator again through a pipeline and a pump, the ozone water generator generates ozone water through low-voltage direct-current electrolyzed water and inputs the ozone water into a spraying system in the oxidation tower again for spraying, and when a detection device at an outlet detects that gas discharge does not reach the standard, the spraying water quantity and the ozone quantity can be increased through a control system.
The utility model discloses utilize UV photodissociation technique, ozone oxidation's processing technology and photooxidation technique combination technology to handle foul gas, make it can be quick effectual produce a large amount of hydroxyl free radicals, make its treatment effect to foul gas improve by a wide margin.
The UV photolysis technology and the ozone oxidation treatment technology are advanced oxidation technologies combining ozone and ultraviolet radiation, under the irradiation of ultraviolet light (the wavelength is 185nm), ozone is decomposed to generate active hydroxyl radicals (-OH), and the reaction mechanism is as follows:
O3+H2O+hv——O2+H2O2
H2O2+hv——2-OH
the utility model discloses in, through the mode that adopts plus ozone, increase the volume that produces the hydroxyl radical, effect through fine atomizing nozzle, decompose ozone water into the even little fog form blowout of 20-40um, there is the ultraviolet lamp that the wavelength is 185nm to shine at the shower nozzle face of fine shower nozzle, because the little fog granule of ozone water is very little, and evenly distributed is on the cross section of oxidation tower, make ultraviolet ray can fully shine all little fog granules, make its emergence reaction that can be abundant, produce the hydroxyl radical, carry out advanced oxidation treatment (AOP).
The utility model discloses the filler that adopts is the bulk packing, the bulk packing is scribbled on the surface metal oxide (Al2O3, TiO2, MnO2 etc.), these oxides can carry out the secondary catalysis with the hydrone in the foul gas after rising and the ozone gas of part by the catalysis under the light irradiation and become the hydroxyl radical, the foul gas carries out more abundant secondary contact in the bulk packing 6, carry out longer time secondary oxidation to the foul factor, ensure getting rid of completely of foul factor.
Taking TiO2 as an example, TiO2 can perform redox reaction under the illumination condition, and because its electronic structure is a full valence band and an empty conduction band, when photon energy (hv) reaches or exceeds its band gap energy, an electron can be excited from the valence band to the conduction band, and at the same time, a corresponding hole is generated in the valence band, i.e. an electron (e-) and a hole (h +) pair is generated, and in general, the conduction band electron and the valence band hole in the activated state are recombined into a neutral body (N), so as to generate energy, which is dissipated in the form of light energy (hv) or heat energy.
Whereas in the presence of a suitable trapping agent or surface defect state, recombination of electrons and holes is inhibited and a redox reaction occurs at the surface, wherein the valence band hole is a good oxidant and the conduction band electron is a good reductant, in a photocatalytic semiconductor, the holes have greater reactivity and carry a major portion of the photon energy, which typically reacts with surface adsorbed H2O or OH "to form surface hydroxyl groups with strong oxidation, the reaction formula is as follows:
OH+h+—·OH
H2O+h+—·OH+H+
for electrons, the electrons generally react with oxygen molecules adsorbed on the surface, and the generated active oxygen molecules not only participate in the reduction reaction, but also are another source of surface hydroxyl groups, and the specific reaction formula is as follows:
O2+e-—·O2 -
·O2 -+H2O—·OOH+OH-
2·OOH—H2O2+O2
·OOH+H2O+e-—H2O2+OH-
H2O2+e-—·OH+OH-
the hydroxyl group has the reaction energy of 402.8MJ/mol, so that various organic matters can be completely decomposed, and CO is finally generated2And H2O and the like.
This device can carry out online collection to data through the on-line monitoring appearance according to the difference of the concentration in the foul gas to handle through PLC, governing system's the water yield that sprays, the irradiation strength of ultraviolet lamp, indexes such as the dwell time of gas can adapt to the foul gas of different concentrations.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a device of combined treatment foul gas, includes scrubbing tower (1), oxidation tower (2), washing circulation tank (3), sprays circulation tank (4) and ozone water generator (5), its characterized in that: the malodorous gas is connected with the gas inlet end of a washing tower (1) through a pipeline, a fan and a flame arrester, the gas outlet end of the washing tower (1) is connected with the gas inlet end of an oxidation tower (2) through a pipeline, a spraying system (7) is fixedly connected inside the oxidation tower (2), the spraying system (7) is respectively connected with a washing circulating water tank (3) through a pipeline and a pump, and the water outlet end at the bottom of the washing tower (1) is connected with the washing circulating water tank (3) through a pipeline;
the spraying circulating water tank (4) is connected with an ozone water inlet end of the ozone water generator (5) through a pipeline and a pump, an outlet end of the ozone water generator (5) is connected with a spraying system (7) in the middle of the oxidation tower (2) through a pipeline, and a water discharging end at the bottom of the oxidation tower (2) is connected with the spraying circulating water tank (4) through a pipeline.
2. A combined malodorous gas treatment device as claimed in claim 1, wherein: the oxidation tower (2) is operated at normal pressure, the operating temperature of the oxidation tower (2) is 20-25 ℃, the spray system (7) is fixedly connected with a micro-mist nozzle, and the top inside the washing tower (1) is fixedly connected with a spray device.
3. A combined malodorous gas treatment device as claimed in claim 1, wherein: the middle part of the oxidation tower (2) is fixedly connected with a bulk packing (6), and the surface of the bulk packing (6) is coated with metal oxide.
4. A combined malodorous gas treatment device as claimed in claim 1, wherein: the bottom fixedly connected with ultraviolet lamp (8) of oxidation tower (2) inside, the inside top fixedly connected with demister (9) of oxidation tower (2), and demister (9) are the stainless steel wire net structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921493712.6U CN210934447U (en) | 2019-09-06 | 2019-09-06 | Device for combined treatment of malodorous gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921493712.6U CN210934447U (en) | 2019-09-06 | 2019-09-06 | Device for combined treatment of malodorous gas |
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| CN210934447U true CN210934447U (en) | 2020-07-07 |
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| CN201921493712.6U Active CN210934447U (en) | 2019-09-06 | 2019-09-06 | Device for combined treatment of malodorous gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433648A (en) * | 2019-09-06 | 2019-11-12 | 武汉博朗清能环保工程有限公司 | A kind of device and processing method of combined treatment foul gas |
| WO2023249570A1 (en) * | 2022-06-23 | 2023-12-28 | Ponglikhittanon Apichet | Method and system for gas treatment and purification by modified advanced oxidation technology |
-
2019
- 2019-09-06 CN CN201921493712.6U patent/CN210934447U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433648A (en) * | 2019-09-06 | 2019-11-12 | 武汉博朗清能环保工程有限公司 | A kind of device and processing method of combined treatment foul gas |
| WO2023249570A1 (en) * | 2022-06-23 | 2023-12-28 | Ponglikhittanon Apichet | Method and system for gas treatment and purification by modified advanced oxidation technology |
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