CN102764587B - Method for processing waste gas containing ozone - Google Patents
Method for processing waste gas containing ozone Download PDFInfo
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- CN102764587B CN102764587B CN201210274617.3A CN201210274617A CN102764587B CN 102764587 B CN102764587 B CN 102764587B CN 201210274617 A CN201210274617 A CN 201210274617A CN 102764587 B CN102764587 B CN 102764587B
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Abstract
The invention relates to a method for processing the waste gas containing ozone by adopting a device for processing the waste gas. The device for processing the waste gas comprises a decomposing tower, an absorbing tower and a catalyzing tower which are combined into a whole body from bottom to top. The waste gas enters the decomposing tower from a waste gas inlet, wherein the temperature of the decomposing tower is controlled at 800-2,600 DEG C; after the waste gas is heated and decomposed, the waste gas enters the absorbing tower through the lower section of a central gas guiding pipe; after the decomposed waste gas passes through a gas distributor of the absorbing tower and a spraying device, the decomposed waste gas passes through the upper section of the central gas guiding pipe and a gas distributor of the catalyzing tower and enters the catalyzing tower; and after the waste gas is catalyzed, the waste gas is discharged from a purified gas outlet. The method has an obvious waste-gas processing effect, can be used for decomposing, absorbing, catalyzing and breaking the ozone and has a strong application effect. Due to the adoption of the method, less land is occupied, the energy consumption is reduced, and the cost is reduced.
Description
Technical field
The invention belongs to gas processing method, especially a kind of waste gas processing method that contains ozone.
Background technology
Ozone is the allotrope of oxygen, is a kind of light blue gas, has strong impulse stink.Although the ozone of trace can play sterilization, at the industrial PCB that contains that also can be used to process difficult degraded, phenol, the waste water of the compound of the polycyclic aromatic hydrocarbons such as naphthalene and unsaturated hydrocarbons, but, because ozone has higher chemical reactivity, there is strong impulse, health is had to certain harm.It is mainly to stimulate and infringement deep respiratory tract, and can damage cental system, to also slight spread effect of eyes.In the time of Enrichment, human body and biological tissue are had to direct infringement, as eye and respiratory apparatus dry, have acute burning sensation, headache, nervous centralis generation obstacle, the time is long again, thinking ability decline, can cause people's disturbance in thinking.When serious, can cause pulmonary emphysema and pulmonary edema.In addition, ozone can also hinder blood oxygen therapy function, causes histanoxia, makes thyroid function impaired, and bone calcification also can cause the systemic effects of potentiality, as brings out lymphocyte chromosome distortion, damages the activity of some enzyme and produces hemolytic reaction.
In order to prevent the harm of ozone to human body, improve the production technology of relevant enterprise, strict implement waste gas emission standard.Conventional waste gas processing method ozoniferous comprises dilution method, washing method, thermal decomposition method, absorption method, catalytic decomposition etc. at present.Dilution method is diluted tail gas ozoniferous with the fresh air in ventilating system, and but, it may be very high directly reaching the required thinner ratio of emission ozone Security Target.Washing method is that water washs tail gas in spray column, and ozone concentration can reduce by 50%, but reaction speed is not enough to ozone to be removed to proper level.Thermal decomposition method is current for eliminating the most popular technology of the contained ozone of ozone treatment factory tail gas, but temperature wants 300
0more than C, energy consumption is large.Absorption method be by ozone waste gas by the landfill leachate of active carbon filtering layer is housed, but easily there is the situation of serious blast.Catalytic decomposition need to be to catalyst continuous heating, and as adopted the catalyst such as manganese oxide, nickel oxide, but these catalyst all lost efficacy very soon in the time having humidity to exist.
Summary of the invention
The invention provides a kind of waste gas processing method ozoniferous, obvious processing effect, energy consumption is low, and ozone removal efficiency is high.
A kind of waste gas processing method ozoniferous, waste gas processing method adopts emission-control equipment to process waste gas ozoniferous, and emission-control equipment comprises decomposition tower, absorption tower and catalytic tower, and three towers are integrated; Wherein catalytic tower is the upper tower of emission-control equipment, and absorption tower is the middle tower of emission-control equipment, and decomposition tower is the lower tower of emission-control equipment; Wherein the outer wall of decomposition tower arranges heater, is provided with exhaust gas inlet in decomposition tower bottom; Absorption tower is bubble column, is provided with absorption tower gas distributor in bottom, absorption tower, is provided with spray equipment at top, absorption tower; Catalytic tower bottom is provided with catalytic tower gas distributor, catalytic tower gas distributor is provided with air distribution plate, loading catalyst on air distribution plate, catalytic tower top is provided with pure qi (oxygen) outlet, it is characterized in that, emission-control equipment inside has the central wireway that is positioned at middle part, and central wireway is divided into two sections, the lower end of central authorities' wireway hypomere is positioned at the top of decomposition tower, and the upper end of central wireway hypomere is connected with the absorption tower gas distributor of bottom, absorption tower; The lower end of central authorities' wireway epimere is positioned on the top spray device of absorption tower, and the upper end of central wireway epimere is positioned at the catalytic tower gas distributor of catalytic tower bottom and is connected; Waste gas ozoniferous enters decomposition tower by exhaust gas inlet, and the temperature control of decomposition tower is 80
0c-260
0c, waste gas ozoniferous after decomposes, enters absorption tower by central wireway hypomere in decomposition tower; Waste gas ozoniferous, through after absorption tower gas distributor and spray equipment, enters catalytic tower by central wireway epimere, catalytic tower gas distributor successively, through the catalytic action of catalyst, discharges from pure qi (oxygen) outlet.
Described decomposition tower is packed tower, and filler is Raschig ring, Pall ring, cascade ring, ripple packing.
Described spray equipment shower water.
After the pure qi (oxygen) outlet at described catalytic tower top, be provided with ozone-detecting element.
In described catalytic tower, the described catalyst carrier of filling is selected active carbon, and active constituent is made up of manganese dioxide and metal oxide, and wherein the weight ratio of manganese dioxide and metal oxide is (2-20): 1, and described metal oxide is cobalt, zirconium or titanyl compound.
Described catalytic tower is divided into two catalyst layers, and upper strata catalyst is active carbon, and lower floor's catalyst is manganese dioxide.
Described catalytic tower is divided into three layers of catalyst layer, upper strata catalyst is active carbon, middle level catalyst carrier is selected active carbon, active constituent is made up of manganese dioxide and metal oxide, wherein the weight ratio of manganese dioxide and metal oxide is (2-20): 1, described metal oxide is cobalt, zirconium or titanyl compound, and lower floor's catalyst is manganese dioxide.
Brief description of the drawings
Fig. 1 is the present invention's emission-control equipment cutaway view ozoniferous.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Referring to Fig. 1, a kind of emission-control equipment 1 ozoniferous, comprises that decomposition tower 4, absorption tower 3 and catalytic tower 2, three towers are integrated; Wherein catalytic tower 2 is upper towers of emission-control equipment 1, and absorption tower 3 is middle towers of emission-control equipment 1, and decomposition tower 4 is lower towers of emission-control equipment 1; Wherein the outer wall of decomposition tower 4 arranges heater 5, is provided with exhaust gas inlet 6 in decomposition tower bottom; Absorption tower 3 is bubble column, is provided with absorption tower gas distributor 7 in bottom, absorption tower, is provided with spray equipment 8 at top, absorption tower; Catalytic tower 2 bottoms are provided with catalytic tower gas distributor 9, catalytic tower gas distributor 9 is provided with air distribution plate 17, loading catalyst 10 on air distribution plate 17, catalytic tower 2 tops are provided with pure qi (oxygen) outlet 11, it is characterized in that, emission-control equipment 1 inside has the central wireway that is positioned at middle part, and central wireway is divided into two sections, the lower end of central authorities' wireway hypomere 13 is positioned at the top of decomposition tower 4, and the upper end of central wireway hypomere 13 is connected with the absorption tower gas distributor 7 of 3 bottoms, absorption tower; The lower end of central authorities' wireway epimere 12 is positioned on the 3 top spray devices 8 of absorption tower, and the upper end of central wireway epimere 12 is positioned at the catalytic tower gas distributor 9 of catalytic tower 2 bottoms and is connected.Decomposition tower 4 is packed tower, and filler is Raschig ring, Pall ring, cascade ring, ripple packing.Spray equipment 8 shower waters.After the pure qi (oxygen) outlet 11 at catalytic tower 2 tops, be provided with ozone-detecting element 14.Catalyst 10 carriers of catalytic tower 2 interior fillings are selected active carbon, and active constituent is made up of manganese dioxide and metal oxide, and wherein the weight ratio of manganese dioxide and metal oxide is (2-20): 1, and metal oxide is cobalt, zirconium or titanyl compound.Spray equipment 8 is connected with liquid supplying apparatus 15, be provided with liquid outlet in 3 bottoms, absorption tower, liquid outlet connects liquid handling device 16, and liquid handling device 16 is connected with liquid supplying apparatus 15, so that the liquid after processing continues to be recycled in liquid supplying apparatus 15.
Waste gas ozoniferous enters decomposition tower 4 by exhaust gas inlet 6, and the temperature control of decomposition tower 4 is 80
0c-260
0c, is preferably 150
0c-210
0c, more preferably 180
0c-200
0c, waste gas ozoniferous after decomposes, enters absorption tower 3 by central wireway hypomere 13 in decomposition tower 4; Waste gas ozoniferous, through after absorption tower gas distributor 7 and spray equipment 8, enters catalytic tower 2 by central wireway epimere 12, catalytic tower gas distributor 9 successively, through the catalytic action of catalyst 10, discharges from pure qi (oxygen) outlet 11.
In another kind of embodiment, catalytic tower 2 is divided into two catalyst layers, and upper strata catalyst is active carbon, and lower floor's catalyst is manganese dioxide.
In another kind of embodiment, catalytic tower 2 is divided into three layers of catalyst layer, upper strata catalyst is active carbon, middle level catalyst carrier is selected active carbon, active constituent is made up of manganese dioxide and metal oxide, wherein the weight ratio of manganese dioxide and metal oxide is (2-20): 1, and described metal oxide is cobalt, zirconium or titanyl compound, lower floor's catalyst is manganese dioxide.
Embodiment 1
Waste gas ozoniferous is by emission-control equipment as shown in Figure 1, and the temperature control of decomposition tower 4 is 190
0c, waste gas ozoniferous after decomposes, enters absorption tower 3 by central wireway hypomere 13 in decomposition tower 4, waste gas ozoniferous is through absorption tower gas distributor 7, after the water spraying with spray equipment 8 contacts, successively by central wireway epimere 12, catalytic tower gas distributor 9 enters catalytic tower 2, catalytic tower 2 is divided into three layers of catalyst layer, upper strata catalyst is active carbon, middle level catalyst carrier is selected active carbon, active constituent is made up of manganese dioxide and metal oxide, wherein the weight ratio of manganese dioxide and metal oxide is 15:1, described metal oxide is cobalt, zirconium or titanyl compound, lower floor's catalyst is manganese dioxide, through the catalytic action of catalyst 10, discharge from pure qi (oxygen) outlet 11, show through ozone-detecting element, the removal efficiency of ozone can reach 96%.
Adopt waste gas processing method ozoniferous of the present invention, adopt decomposition tower, absorption tower and catalytic tower, the emission-control equipment that three towers are integrated, obvious processing effect, ozone is there is to the damage capability of good decomposition, absorption and catalysis, and save occupation of land, reduce energy consumption, reduce costs, there is stronger effect.
Claims (4)
1. a waste gas processing method ozoniferous, waste gas processing method adopts emission-control equipment to process waste gas ozoniferous, and emission-control equipment comprises decomposition tower, absorption tower and catalytic tower, and three towers are integrated, wherein catalytic tower is the upper tower of emission-control equipment, and absorption tower is the middle tower of emission-control equipment, and decomposition tower is the lower tower of emission-control equipment, wherein the outer wall of decomposition tower arranges heater, is provided with exhaust gas inlet in decomposition tower bottom, absorption tower is bubble column, is provided with absorption tower gas distributor in bottom, absorption tower, is provided with spray equipment at top, absorption tower, catalytic tower bottom is provided with catalytic tower gas distributor, catalytic tower gas distributor is provided with air distribution plate, loading catalyst on air distribution plate, catalytic tower top is provided with pure qi (oxygen) outlet, it is characterized in that, emission-control equipment inside has the central wireway that is positioned at middle part, and central wireway is divided into two sections, the lower end of central authorities' wireway hypomere is positioned at the top of decomposition tower, and the upper end of central wireway hypomere is connected with the absorption tower gas distributor of bottom, absorption tower, the lower end of central authorities' wireway epimere is positioned on the top spray device of absorption tower, and the upper end of central wireway epimere is positioned at the catalytic tower gas distributor of catalytic tower bottom and is connected, waste gas ozoniferous enters decomposition tower by exhaust gas inlet, and the temperature control of decomposition tower is 800C-2600C, and waste gas ozoniferous after decomposes, enters absorption tower by central wireway hypomere in decomposition tower, waste gas ozoniferous is through after absorption tower gas distributor and spray equipment, successively by central wireway epimere, catalytic tower gas distributor enters catalytic tower, through the catalytic action of catalyst, discharge from pure qi (oxygen) outlet, described catalytic tower is divided into three layers of catalyst layer, upper strata catalyst is active carbon, middle level catalyst carrier is selected active carbon, active constituent is made up of manganese dioxide and metal oxide, wherein the weight ratio of manganese dioxide and metal oxide is (2-20): 1, described metal oxide is cobalt, zirconium or titanyl compound, lower floor's catalyst is manganese dioxide.
2. waste gas processing method according to claim 1, is characterized in that, described decomposition tower is packed tower, and filler is Raschig ring, Pall ring, cascade ring or ripple packing.
3. waste gas processing method according to claim 1, is characterized in that, described spray equipment shower water.
4. waste gas processing method according to claim 1, is characterized in that, after the pure qi (oxygen) outlet at described catalytic tower top, is provided with ozone-detecting element.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210274617.3A CN102764587B (en) | 2012-08-03 | 2012-08-03 | Method for processing waste gas containing ozone |
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|---|---|---|---|
| CN201210274617.3A CN102764587B (en) | 2012-08-03 | 2012-08-03 | Method for processing waste gas containing ozone |
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| CN102764587B true CN102764587B (en) | 2014-08-13 |
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| CN104524936B (en) * | 2014-12-31 | 2016-08-24 | 环境保护部华南环境科学研究所 | A kind of processing means of the plastic granulating waste gas of integration |
| CN107321147A (en) * | 2017-06-29 | 2017-11-07 | 西北农林科技大学 | A kind of device for eliminating Ozone in Atmosphere |
| CN111135676B (en) * | 2020-01-19 | 2021-12-31 | 上海天成环境保护有限公司 | Ozone-containing waste gas treatment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3553298B2 (en) * | 1996-11-20 | 2004-08-11 | 三菱電機株式会社 | Waste ozone treatment equipment |
| CN1259398A (en) * | 1999-12-24 | 2000-07-12 | 中国科学院兰州化学物理研究所 | Ozone decomposition catalyst |
| CN1817416A (en) * | 2005-02-07 | 2006-08-16 | 中国科学院生态环境研究中心 | Treatment and treater for destroying oxygen gas |
| CN102205218B (en) * | 2010-10-15 | 2013-01-23 | 西南交通大学 | Reaction apparatus for ozone tail gas absorption |
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