CN104815536A - Organic waste gas processing method and processing device - Google Patents
Organic waste gas processing method and processing device Download PDFInfo
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- CN104815536A CN104815536A CN201510190936.XA CN201510190936A CN104815536A CN 104815536 A CN104815536 A CN 104815536A CN 201510190936 A CN201510190936 A CN 201510190936A CN 104815536 A CN104815536 A CN 104815536A
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Abstract
The invention belongs to the technical field of waste gas processing, in particular to an organic waste gas processing method and processing device. The processing method includes steps of (1) spray oxidation, (2) catalytic oxidation, (3) acid-base neutralization and (4) recycling or emission; the processing device comprises an ozone generator, an advanced oxidation tower, a catalytic oxidation tower, an acid-base neutralization tower, an oxygen recycling tank and a chimney. According to the organic waste gas processing method, the ozone oxidation ability is 10 times of the individual ozone oxidation ability by means of oxidation accelerator, the ozone can generate a lot of hydroxyl radical, the ozone use ratio is more than 90%, the organic waste gas degradation rate is 40-50% higher than that of the individual ozone oxidation, and moreover, the processing device is low in energy consumption, the processing device only consumes electricity and water, the cost is low, the use is safe, the degradation is complete, secondary pollution is avoided, and secondary treatment is not needed.
Description
Technical field
The invention belongs to technical field of waste gas treatment, particularly relate to a kind of processing method and treating apparatus thereof of organic exhaust gas.
Background technology
Environmental problem is the focus of countries in the world common concern all the time, along with the progress of society and the continuous expansion of industrial technology, chemical industry, medicine, food, papermaking, the industries such as printing and dyeing can make a large amount of organic solvents as polyester in process of production, resin, glue, butanone, the organic solvents such as diluent, these can become volatile organic waste gas through the organic solvent of heating, the resource consumption of China is mainly based on coal, the sulfur dioxide discharge capacity produced also sharply rises, these organic exhaust gas are directly emptying, the quality of surrounding air can be had a strong impact on, severe contamination is caused to environment, be detrimental to health and ecological environment.
At present, the processing method of domestic organic waste gas mainly contains combustion method, absorption process, absorption method, bioanalysis, photocatalytic method, low-temperature plasma method.The shortcoming of combustion method be dangerous, easily produce secondary pollution; The shortcoming of bioanalysis, absorption process, absorption method is that purification efficiency is low, generation secondary pollution; Due to the restriction of reaction condition, during photocatalytic method process organic exhaust gas, multiple aromatic series organic intermediate can be produced, cause organic matter degradation thorough not; Low-temperature plasma method shortcoming be dangerous, purification efficiency is low.
Along with the development of technology, the process that ozonation technology is applied to organic exhaust gas is arisen at the historic moment, ozone has very strong oxidability, ozone decomposed can produce hydroxyl radical free radical (OH), hydroxyl radical free radical can be oxidized gas chromatography and inorganic matter, but because hydroxyl radical free radical is at low dosage and can not permineralization organic matter in the short time, thus the use of ozonation technology is restricted.
Summary of the invention
An object of the present invention is: the deficiency existed for prior art, provides a kind of cost low, safety, thorough to VOCs treatment, not easily produces the processing method of the organic exhaust gas of secondary pollution.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A processing method for organic exhaust gas, the treating method comprises following steps:
(1) spray oxidation: organic exhaust gas is passed into from bottom to top in advanced oxidation tower, ozone is passed in described advanced oxidation tower from bottom to top, the flow-rate ratio of described organic exhaust gas and described ozone is 1:0.5 ~ 2, oxidation accelerator is added to the water formation spray liquid, the mol ratio of described oxidation accelerator and described water is 0.2 ~ 1:1, described spray liquid enters in described advanced oxidation tower from top to bottom, described ozone carries out spray oxidation to described organic exhaust gas under the oxidation of described spray liquid promotes, obtains elementary gaseous mixture and aqueous solutions of organic salts;
(2) catalytic oxidation: described elementary gaseous mixture is discharged from the top of described advanced oxidation tower, enters from bottom to top in catalytic oxidation tower and carries out catalytic oxidation, obtain mixed gas;
(3) acid-base neutralization: described mixed gas is discharged from the top of described catalytic oxidation tower, enter in acid-base neutralization tower from bottom to top, alkalies enters in described acid-base neutralization tower from top to bottom, and described alkalies and described mixed gas carry out acid-base neutralization, obtain clean gas and salting liquid;
(4) reclaim or discharge: described clean gas is discharged from the top of described acid-base neutralization tower, recycle or enter in air through chimney, the described aqueous solution and salting liquid enter in cesspool after treatment.
Improve as one, described in step (1), oxidation accelerator is nano titanium oxide.
Improve as one, PH=9 ~ 11 of alkalies described in step (3).
Improve as one, spray liquid described in step (1) is also containing highly basic.
Preferably, described highly basic is NaOH or potassium hydroxide.
As improving further, PH=8 ~ 12 of described spray liquid.
The processing method of organic exhaust gas that the present invention adopts is advanced oxidation processes, and it utilizes oxidation accelerator to be combined technology to improve oxidability with ozonation technology, and ozone obtains the promotion of oxidation accelerator in the course of reaction of complexity, and its reaction mechanism is as follows:
O
3+H
2O→H
2O
2
H
2O
2→2·OH
O
3+H
2O→2·OH+O
2
Ozone can produce more hydroxyl radical free radical (OH), H under the promotion of oxidation accelerator
2o
2and O
2, there is a series of reaction in hydroxyl radical free radical and organic exhaust gas, organic molecule is finally oxidized is decomposed into CO
2, H
2o and harmless organic matter.
Wherein, in advanced oxidation decomposes, ozone participates in directly reacting, and its course of reaction is as follows:
Pollutant+O
3→ CO
2+ H
2o+RCOOH
O
3(Eo=2.07V) selective, speed is slow;
OH participates in indirect reaction, and its course of reaction is as follows
Pollutant+OH → CO
2+ H
2o+RCOOH
OH (Eo=2.8V) oxidizing potential is high, non-selectivity, and speed is fast, and respond is strong, can cause chain reaction, organic matter is thoroughly degraded.
The oh group on nano titanium oxide surface is the active sites promoting ozone decomposed, the oh group of titanium dioxide surface and ozone molecule form hydrogen bond, it promotes that ozone decomposed is a large amount of hydroxyl radical free radical, hydroxyl radical free radical both the organic exhaust gas oxidation being adsorbed on titanium dioxide surface, can also diffuse in solution and will be oxidized by the organic exhaust gas adsorbed.
Organic exhaust gas is decomposed into carbon dioxide, water vapour and harmless organic matter after advanced oxidation, harmless organic matter is soluble in water, can directly discharge, do not entered further catalytic oxidation in catalytic oxidation tower by the organic exhaust gas of advanced oxidation, carbon dioxide through in acid-base neutralization tower and after become salting liquid, clean gas comprises water vapour, oxygen and unreacted ozone, and it is pollution-free to air, can drain in air.
Another object of the present invention is to: for said method, a kind for the treatment of apparatus of organic exhaust gas is provided.Its technical scheme is:
A kind for the treatment of apparatus of organic exhaust gas, comprise ozone generator, advanced oxidation tower, catalytic oxidation tower, acid-base neutralization tower, oxygen recovery tank and chimney, described ozone generator is communicated with the bottom of described advanced oxidation tower, the bottom of described advanced oxidation tower is provided with exhaust gas inlet, the top of described advanced oxidation tower is communicated with the bottom of described catalytic oxidation tower, the top of described catalytic oxidation tower is communicated with the bottom of described acid-base neutralization tower, the top of described acid-base neutralization tower is communicated with described chimney with described oxygen recovery tank respectively, described oxygen recovery tank is provided with air intake control valve.
Improve as one, oxidation demister, at least stair oxidation spray equipment, at least one-level packing layer and aeration plate is provided with from top to bottom in described advanced oxidation tower, described aeration plate is communicated with described ozone generator, the bottom of described advanced oxidation tower is also provided with discharge outlet, described discharge outlet is communicated with three-way pipe, a mouth of pipe in described three-way pipe is communicated with circulating pump, and described circulating pump is communicated with described oxidation spray equipment, and another mouth of pipe place in described three-way pipe is provided with draining control valve.
Improve as one, be provided with catalyst support assembly in described catalytic oxidation tower, bottom and the top of described catalyst support assembly are respectively equipped with air door, and the inside of described catalyst support assembly is cross structure.
Improve as one, in being provided with successively from top to bottom in described acid-base neutralization tower and in demister, at least one-level and spray equipment and at least one-level ladder ring packing layer.
The treating apparatus of a kind of organic exhaust gas provided by the invention, is comprised ozone generator, advanced oxidation tower, catalytic oxidation tower, acid-base neutralization tower, oxygen recovery tank and chimney etc., can be ensured the self-sustaining self-sufficiency of ozone, reduce processing cost by ozone generator.
Ozone is by the water generating ozone liquid in aeration plate and spray liquid, Ozone Water decomposes generation hydroxyl radical free radical under the effect of oxidation accelerator, the contact area of organic exhaust gas and ozone can be increased by spray equipment and packing layer, improve the degradation efficiency of organic exhaust gas, the drop carried secretly in elementary gaseous mixture can stay in absorption tower by the demister in advanced oxidation tower, circulating pump is used for the Ozone Water of high concentration in advanced oxidation tower to carry out recycling, to reduce the degradation efficiency of processing cost and raising organic exhaust gas, the aqueous solution in advanced oxidation tower is drained or is recycled by three-way pipe convenient operation personnel as required.
Catalyst support assembly is mainly in catalytic oxidation tower, it can decompose undegradable organic exhaust gas further, organic exhaust gas is made thoroughly to be degraded to water, carbon dioxide and harmless inorganic matter, its inner employing cross structure, reduce resistance, and energy consumption is little, organic exhaust gas fully stops and carries out catalytic oxidation contact and accelerated decomposition in cross structure.
Ladder ring packing layer is adopted in acid-base neutralization tower, its gas-liquid contact specific area of this structure is large, when mixed gas body is through out-of-date, gas is evenly distributed in polyhedron empty ball, in point cantact, avoid Biased flow phenomenon, improve absorption rate, thus effectively remove the gases such as the carbon dioxide in mixed gas body.
Recyclable carrying out to oxygen recovery tank recycles (synthesizing ozone as utilized this oxygen) clean gas after treatment, or discharges through chimney.
Owing to have employed technique scheme, the invention has the beneficial effects as follows:
The processing method of a kind of organic exhaust gas provided by the invention, the oxidability of ozone under the effect of oxidation accelerator is 10 times of the independent oxidability of ozone, it can produce a large amount of hydroxyl radical free radicals, the utilization rate of ozone can reach more than 90%, during the oxidation more independent than ozone of the degradation rate of organic exhaust gas, the degradation rate of organic exhaust gas improves 40 ~ 50%, and its energy consumption for the treatment of apparatus that this processing method uses is lower, except power consumption, water consumption, do not consume other energy, its cost is low, safety, and its degraded thoroughly, secondary pollution can not be brought, without the need to after-treatment.
Accompanying drawing explanation
Fig. 1 is the structural representation of the treating apparatus of a kind of organic exhaust gas provided by the invention;
Fig. 2 is the internal structure schematic diagram of the middle-and-high-ranking oxidizing tower of Fig. 1;
Fig. 3 is the internal structure schematic diagram of catalytic oxidation tower in Fig. 1;
Fig. 4 is the internal structure schematic diagram of acid-base neutralization tower in Fig. 1;
Fig. 5 is the internal structure schematic diagram of oxygen recovery tank in Fig. 1;
Fig. 6 is the process chart of the processing method of a kind of organic exhaust gas provided by the invention;
Wherein: 1-ozone generator, 2-advanced oxidation tower, 3-catalytic oxidation tower, 4-acid-base neutralization tower, 5-oxygen recovery tank, 6-chimney, 7-three-way pipe, 8-circulating pump, 21-tower body, 22-exhaust gas inlet, the import of 23-ozone, 24-aeration plate, 25-first row gas port, 26-is oxidized demister, 27-is oxidized spray equipment, 28-packing layer, 29-discharge outlet, 31-second exhaust port, 32-catalyst support assembly, 33-air door, 41-the 3rd exhaust outlet, 42-leakage fluid dram, in 43-and demister, in 44-and spray equipment, 45-ladder ring packing layer, 51-air intake control valve, 52-drying layer, 71-draining control valve, 271-distributes female pipe, 272-nozzle, 421-discharge opeing control valve.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1 shows the structural representation of the treating apparatus of a kind of organic exhaust gas provided by the invention, and for convenience of explanation, this figure only provides the structure division relevant with the present invention.
As shown in Figure 1, a kind for the treatment of apparatus of organic exhaust gas, comprises ozone generator 1, advanced oxidation tower 2, catalytic oxidation tower 3, acid-base neutralization tower 4, oxygen recovery tank 5 and chimney 6.
Advanced oxidation tower 2 comprises tower body 21, its tower body 21 adopts polypropylene material to make (i.e. PP structure), tower body 21 will bear tower body pressure itself and solution pressure for a long time, also to bear blast during work, PP structure had both had good decay resistance, higher tension, compression strength can be kept again, thus the service life of advanced oxidation tower 2 can be extended.
The bottom of advanced oxidation tower 2 is provided with exhaust gas inlet 22, ozone import 23 and aeration plate 24, the top of advanced oxidation tower 2 is provided with first row gas port 25, ozone generator 1 is communicated with aeration plate 24 through ozone import 23, as shown in Figure 2, oxidation demister 26 is provided with in advanced oxidation tower 2, two-stage oxidation spray equipment 27 and two-stage packing layer 28, two-stage oxidation spray equipment 27 and two-stage packing layer 28 interval are arranged, and oxidation spray equipment 27 is positioned at the top of packing layer 28, oxidation spray equipment 27 comprises and distributes female pipe 271 and multiple nozzle 272, nozzle 272 is preferably spiral nozzle, first row gas port 25 place is located at by oxidation demister 26, the bottom of advanced oxidation tower 2 is also provided with discharge outlet 29, discharge outlet 29 is communicated with three-way pipe 7, a mouth of pipe in three-way pipe 7 is communicated with circulating pump 8, circulating pump 8 is communicated with two-stage oxidation spray equipment 27 respectively, another mouth of pipe place in three-way pipe 7 is provided with draining control valve 71.
The first row gas port 25 of advanced oxidation tower 2 is communicated with the bottom of catalytic oxidation tower 3, the top of catalytic oxidation tower 3 is provided with second exhaust port 31, as shown in Figure 3, catalyst support assembly 32 is provided with in catalytic oxidation tower 3, the bottom of catalyst support assembly 32 and top are respectively equipped with air door 33, the inside of catalyst support assembly 32 is cross structure, and catalyst is preferably metal oxide.
The top of acid-base neutralization tower 4 is provided with the 3rd exhaust outlet 41, the bottom of acid-base neutralization tower 4 is provided with leakage fluid dram 42, leakage fluid dram 42 place is provided with discharge opeing control valve 421, as shown in Figure 4, in being provided with in acid-base neutralization tower 4 and demister 43, in two-stage and spray equipment 44 and two-stage ladder ring packing layer 45, in two-stage and spray equipment 44 and two-stage ladder ring packing layer 45 interval is arranged, and in and spray equipment 44 be located at the top of ladder ring packing layer 45, in and demister 43 be located at the 3rd exhaust outlet 41 place.
3rd exhaust outlet 41 of acid-base neutralization tower 4 is communicated with oxygen recovery tank 5 and chimney 6 respectively, oxygen recovery tank 5 is provided with air intake control valve 51, as shown in Figure 5, the air inlet place of oxygen recovery tank 5 is provided with drying layer 52, and the water vapour contained in clean gas can remove by drying layer 52 further.
Embodiment one
Utilize above-mentioned treating apparatus process organic exhaust gas
(1) spray oxidation:
A. organic exhaust gas is entered in advanced oxidation tower from exhaust gas inlet, the intake of organic exhaust gas is 2kg/h, the ozone that ozone generator produces enters the aeration plate of advanced oxidation tower bottom through ozone import, the intake of ozone is 1kg/h, be dispersed in advanced oxidation tower through aeration plate, organic exhaust gas and ozone are evenly distributed in advanced oxidation tower through packing layer again;
B. oxidation accelerator (being preferably titanium dioxide) is added to the water formation spray liquid, the mol ratio of titanium dioxide and water is 0.2:1, spray liquid is dispensed to each nozzle through the female pipe of distribution of spray equipment, be atomized by spray liquid through nozzle, spray liquid is dispersed in advanced oxidation tower from top to bottom;
C. ozone contacts with the spray liquid of atomization with organic exhaust gas, ozone is decomposed into a large amount of hydroxyl radical free radicals under the oxidation of spray liquid promotes, hydroxyl radical free radical and undecomposed ozone are oxidized organic exhaust gas, obtain elementary gaseous mixture and harmless organic aqueous solution, elementary gaseous mixture mainly comprises carbon dioxide, steam, undecomposed ozone and undegradable organic exhaust gas etc.;
(2) catalytic oxidation: elementary gaseous mixture is discharged from the first row gas port of advanced oxidation top of tower after demister demist, enter in catalytic oxidation tower from the bottom of catalytic oxidation tower again, carry out after catalytic oxidation through catalyst support assembly, obtain mixed gas, mixed gas mainly comprises carbon dioxide, steam, undecomposed ozone;
(3) acid-base neutralization: mixed gas is discharged from the top of catalytic oxidation tower, enter in acid-base neutralization tower from bottom to top, alkalies (30% sodium hydroxide solution) is dispersed in acid-base neutralization tower from top to bottom through spray equipment, the pH value of alkalies is 9, alkalies and mixed gas carry out acid-base neutralization, obtain clean gas and salting liquid;
(4) discharge: discharged at the top of clean gas from acid-base neutralization tower, enter in air through chimney, the aqueous solution and salting liquid enter in cesspool after treatment.
Embodiment two
Utilize above-mentioned treating apparatus process organic exhaust gas
(1) spray oxidation:
A. organic exhaust gas is entered in advanced oxidation tower from exhaust gas inlet, the intake of organic exhaust gas is 3kg/h, the ozone that ozone generator produces enters the aeration plate of advanced oxidation tower bottom through ozone import, the intake of ozone is 3kg/h, be dispersed in advanced oxidation tower through aeration plate, organic exhaust gas and ozone are evenly distributed in advanced oxidation tower through packing layer again;
B. oxidation accelerator (being preferably titanium dioxide) is added to the water formation spray liquid, the mol ratio of titanium dioxide and water is 0.5:1, NaOH is added again in spray liquid, the pH value regulating spray liquid is 8, spray liquid is dispensed to each nozzle through the female pipe of distribution of spray equipment, be atomized by spray liquid through nozzle, spray liquid is dispersed in advanced oxidation tower from top to bottom;
C. ozone contacts with the spray liquid of atomization with organic exhaust gas, ozone is decomposed into a large amount of hydroxyl radical free radicals under the oxidation of spray liquid promotes, hydroxyl radical free radical and undecomposed ozone are oxidized organic exhaust gas, obtain elementary gaseous mixture and harmless organic aqueous solution, elementary gaseous mixture mainly comprises carbon dioxide, steam, undecomposed ozone and undegradable organic exhaust gas etc.;
(2) catalytic oxidation: elementary gaseous mixture is discharged from the first row gas port of advanced oxidation top of tower after demister demist, enter in catalytic oxidation tower from the bottom of catalytic oxidation tower again, carry out after catalytic oxidation through catalyst support assembly, obtain mixed gas, mixed gas mainly comprises carbon dioxide, steam, undecomposed ozone;
(3) acid-base neutralization: mixed gas is discharged from the top of catalytic oxidation tower, enter in acid-base neutralization tower from bottom to top, alkalies (30% sodium hydroxide solution) is dispersed in acid-base neutralization tower from top to bottom through spray equipment, the pH value of alkalies is 10, alkalies and mixed gas carry out acid-base neutralization, obtain clean gas and salting liquid;
(4) discharge: discharged at the top of clean gas from acid-base neutralization tower, enter in air through chimney, the aqueous solution and salting liquid enter in cesspool after treatment.
Embodiment three
Utilize above-mentioned treating apparatus process organic exhaust gas
(1) spray oxidation:
A. organic exhaust gas is entered in advanced oxidation tower from exhaust gas inlet, the intake of organic exhaust gas is 1.5kg/h, the ozone that ozone generator produces enters the aeration plate of advanced oxidation tower bottom through ozone import, the intake of ozone is 3kg/h, be dispersed in advanced oxidation tower through aeration plate, organic exhaust gas and ozone are evenly distributed in advanced oxidation tower through packing layer again;
B. oxidation accelerator (being preferably titanium dioxide) is added to the water formation spray liquid, the mol ratio of titanium dioxide and water is 1:1, potassium hydroxide is added again in spray liquid, the pH value regulating spray liquid is 12, spray liquid is dispensed to each nozzle through the female pipe of distribution of spray equipment, be atomized by spray liquid through nozzle, spray liquid is dispersed in advanced oxidation tower from top to bottom;
C. ozone contacts with the spray liquid of atomization with organic exhaust gas, ozone is decomposed into a large amount of hydroxyl radical free radicals under the oxidation of spray liquid promotes, hydroxyl radical free radical and undecomposed ozone are oxidized organic exhaust gas, obtain elementary gaseous mixture and harmless organic aqueous solution, elementary gaseous mixture mainly comprises carbon dioxide, steam, undecomposed ozone and undegradable organic exhaust gas etc.;
(2) catalytic oxidation: elementary gaseous mixture is discharged from the first row gas port of advanced oxidation top of tower after demister demist, enter in catalytic oxidation tower from the bottom of catalytic oxidation tower again, carry out after catalytic oxidation through catalyst support assembly, obtain mixed gas, mixed gas mainly comprises carbon dioxide, steam, undecomposed ozone;
(3) acid-base neutralization: mixed gas is discharged from the top of catalytic oxidation tower, enter in acid-base neutralization tower from bottom to top, alkalies (30% sodium hydroxide solution) is dispersed in acid-base neutralization tower from top to bottom through spray equipment, the pH value of alkalies is 11, alkalies and mixed gas carry out acid-base neutralization, obtain clean gas and salting liquid;
(4) reclaim: discharged at the top of clean gas from acid-base neutralization tower, reclaim through oxygen recovery tank, the aqueous solution and salting liquid enter in cesspool after treatment.
Following table is the situation of the index such as organic exhaust gas degradation rate and ozone utilization rate in embodiment one to embodiment three
| Embodiment one | Embodiment two | Embodiment three | |
| Organic exhaust gas degradation rate (%) | 95 | 96 | 98 |
| Ozone utilization rate (%) | 90 | 92 | 94 |
| Energy consumption | Low | Low | Low |
| There is non-secondary pollution | Nothing | Nothing | Nothing |
As can be seen from the table, organic exhaust gas degradation rate is relevant with the PH of the concentration of ozone, the number of oxidation accelerator and spray liquid, ozone concentration is larger, oxidation accelerator amount is more, and the PH of spray liquid is higher, and its organic exhaust gas degradation rate is higher, the utilization rate of ozone is also higher, adopt processing method provided by the invention, its energy consumption is lower, and non-secondary pollution.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a processing method for organic exhaust gas, is characterized in that, the treating method comprises following steps:
(1) spray oxidation: organic exhaust gas is passed into from bottom to top in advanced oxidation tower, ozone is passed in described advanced oxidation tower from bottom to top, the flow-rate ratio of described organic exhaust gas and described ozone is 1:0.5 ~ 2, oxidation accelerator is added to the water formation spray liquid, the mol ratio of described oxidation accelerator and described water is 0.2 ~ 1:1, described spray liquid enters in described advanced oxidation tower from top to bottom, described ozone carries out spray oxidation to described organic exhaust gas under the oxidation of described spray liquid promotes, obtains elementary gaseous mixture and organic aqueous solution;
(2) catalytic oxidation: described elementary gaseous mixture is discharged from the top of described advanced oxidation tower, enters from bottom to top in catalytic oxidation tower and carries out catalytic oxidation, obtain mixed gas;
(3) acid-base neutralization: described mixed gas is discharged from the top of described catalytic oxidation tower, enter in acid-base neutralization tower from bottom to top, alkalies enters in described acid-base neutralization tower from top to bottom, and described alkalies and described mixed gas carry out acid-base neutralization, obtain clean gas and salting liquid;
(4) reclaim or discharge: described clean gas is discharged from the top of described acid-base neutralization tower, recycle or enter in air through chimney, described organic aqueous solution and salting liquid enter in cesspool after treatment.
2. the processing method of a kind of organic exhaust gas as claimed in claim 1, is characterized in that: described in step (1), oxidation accelerator is nano titanium oxide.
3. the processing method of a kind of organic exhaust gas as claimed in claim 1, is characterized in that: PH=9 ~ 11 of alkalies described in step (3).
4. the processing method of a kind of organic exhaust gas as claimed in claim 1, is characterized in that: spray liquid described in step (1) is also containing highly basic.
5. the processing method of a kind of organic exhaust gas as claimed in claim 4, is characterized in that: described highly basic is NaOH or potassium hydroxide.
6. the processing method of a kind of organic exhaust gas as claimed in claim 4, is characterized in that: PH=8 ~ 12 of described spray liquid.
7. the treating apparatus of an organic exhaust gas, it is characterized in that: comprise ozone generator, advanced oxidation tower, catalytic oxidation tower, acid-base neutralization tower, oxygen recovery tank and chimney, described ozone generator is communicated with the bottom of described advanced oxidation tower, the bottom of described advanced oxidation tower is provided with exhaust gas inlet, the top of described advanced oxidation tower is communicated with the bottom of described catalytic oxidation tower, the top of described catalytic oxidation tower is communicated with the bottom of described acid-base neutralization tower, the top of described acid-base neutralization tower is communicated with described chimney with described oxygen recovery tank respectively, described oxygen recovery tank is provided with air intake control valve.
8. the treating apparatus of a kind of organic exhaust gas as claimed in claim 7, it is characterized in that: in described advanced oxidation tower, be provided with oxidation demister, at least stair oxidation spray equipment, at least one-level packing layer and aeration plate from top to bottom, described aeration plate is communicated with described ozone generator, the bottom of described advanced oxidation tower is also provided with discharge outlet, described discharge outlet is communicated with three-way pipe, a mouth of pipe in described three-way pipe is communicated with circulating pump, described circulating pump is communicated with described oxidation spray equipment, and another mouth of pipe place in described three-way pipe is provided with draining control valve.
9. the treating apparatus of a kind of organic exhaust gas as claimed in claim 7, it is characterized in that: in described catalytic oxidation tower, be provided with catalyst support assembly, bottom and the top of described catalyst support assembly are respectively equipped with air door, and the inside of described catalyst support assembly is cross structure.
10. the treating apparatus of a kind of organic exhaust gas as claimed in claim 7, is characterized in that: in being provided with successively from top to bottom in described acid-base neutralization tower and in demister, at least one-level and spray equipment and at least one-level ladder ring packing layer.
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| CN105772068A (en) * | 2016-03-16 | 2016-07-20 | 南京工业大学 | Catalyst RT/M capable of enhancing ozone oxidation performance and preparation method and application of catalyst RT/M capable of enhancing ozone oxidation performance |
| CN109364748A (en) * | 2018-12-03 | 2019-02-22 | 广州尚洁环保科技有限公司 | Based on emulsion foaming sponge production line exhaust treatment system and waste gas processing method |
| CN111249880A (en) * | 2020-02-13 | 2020-06-09 | 四川明道和化学新材料有限公司 | Treatment process and equipment for tail gas in polyphenylene sulfide resin production |
| CN112742196A (en) * | 2020-12-21 | 2021-05-04 | 安徽金禾实业股份有限公司 | Device and method for treating organic tail gas in high-salinity wastewater treatment |
| CN112933900A (en) * | 2021-01-19 | 2021-06-11 | 江阴优澄智能化工程有限公司 | Volatile organic compound trapping and treating system |
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