CN109437390A - A kind of reactor and its application method of catalytic ozonation waste water - Google Patents

A kind of reactor and its application method of catalytic ozonation waste water Download PDF

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Publication number
CN109437390A
CN109437390A CN201811557679.9A CN201811557679A CN109437390A CN 109437390 A CN109437390 A CN 109437390A CN 201811557679 A CN201811557679 A CN 201811557679A CN 109437390 A CN109437390 A CN 109437390A
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CN
China
Prior art keywords
reaction chamber
outlet
reactor
waste water
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201811557679.9A
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Chinese (zh)
Inventor
巫先坤
李爱民
周腾腾
吴迪
戴建军
王�华
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Nanjing University Yancheng Environmental Protection Technology and Engineering Research Institute
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Nanjing University Yancheng Environmental Protection Technology and Engineering Research Institute
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Application filed by Nanjing University Yancheng Environmental Protection Technology and Engineering Research Institute filed Critical Nanjing University Yancheng Environmental Protection Technology and Engineering Research Institute
Priority to CN201811557679.9A priority Critical patent/CN109437390A/en
Publication of CN109437390A publication Critical patent/CN109437390A/en
Withdrawn legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation

Abstract

The invention discloses the reactor and its application method of a kind of catalytic ozonation waste water, which includes: reaction chamber, water inlet, water outlet, gas outlet, circulating outlet;Its lower part is divided into jet reaction chamber and tower reaction chamber by partition inside reaction chamber, jet reaction is intracavitary to be provided with the first catalytic bed and injector, the working fluid import of circulating outlet connection injector, gas outlet is inhaled into fluid inlet by gas circulation pipe connection injector, water inlet is set to the bottom of jet reaction chamber, column plate and the second catalytic bed are provided in tower reaction chamber, water outlet is set to the bottom of tower reaction chamber, air inlet is respectively communicated with the gentle circulation pipe in lower section of column plate, and gas circulation pipe connects offgas outlet.The reactor has many advantages, such as that mass-transfer efficiency is high, reaction rate is fast, ozone utilization rate is high, COD removal rate is high.

Description

A kind of reactor and its application method of catalytic ozonation waste water
Technical field
The invention belongs to field of waste water treatment, more particularly to a kind of reaction of catalytic ozonation Sewage advanced treatment Device and its application method.
Background technique
Recently as the increasingly strict of sewage drainage standard, the Sewage advanced treatment technology of high efficiency, low cost is developed more Seem important.The hot spot that high-level oxidation technology is this year to study, catalytic ozonation can produce with high oxidation activity Hydroxyl radical free radical, the various hardly degraded organic substance pollutants of non-selective removal, therefore widely studied and be applied to waste water Advanced treating.Catalytic ozonation technology is divided into homogeneous catalysis and heterogeneous catalysis by used catalyst.Homogeneous catalysis, catalyst It is difficult to recycle, metal ion is easily introduced secondary pollution, while causing the waste of resource, limits its practical application.It is heterogeneous to urge The catalyst of change technology, is easily recycled, and gas-liquid-solid phase reaction is influenced by mass transfer, weakens the oxidation effectiveness of ozone.Ozone is urged Oxidation device is to influence wastewater treatment to answer one of key factor of effect.
Currently, in practical engineering application be mostly heterogeneous catalytic oxidation, ozone, waste water, catalyst three-phase between biography Matter always affects ozone oxidation effect, while restricting the development of catalytic ozonation technology.Research and development function admirable ozone is urged Oxidation device is very urgent.The ozone catalytic reactor of function admirable can strengthen mass transfer between gas-liquid-solid three-phase, improve ozone Utilization rate avoids heterogeneous catalytic oxidation shortcoming, widens the application range of catalytic ozonation technology.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes a kind of tool There are mass transfer, the catalytic ozonation waste water reactor that reaction rate is fast, ozone utilization rate is high between strengthening gas-liquid-solid three-phase.
To achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of reactor of catalytic ozonation waste water, comprising: reaction chamber and the water inlet being set on the wall of the reaction chamber, Water outlet, gas outlet and circulating outlet;
The reaction chamber is internally provided with longitudinal partition, and there are skies between the partition top and the top of the reaction chamber Gap, the partition bottom are fixedly connected with the bottom of the reaction chamber, and the lower part of the reaction chamber is divided into phase by the partition Jet reaction chamber and tower reaction chamber mutually independent and be only connected to by partition upper space,
The jet reaction is intracavitary to be provided with the first catalytic bed and injector, and it is anti-that the circulating outlet is set to the jet stream The top of chamber is answered, the circulating outlet connects the workflow of the injector by the wall that water-circulating pipe passes through the reaction chamber The outlet of body import, the injector is downward,
The gas outlet is set to the top of the reaction chamber, and the gas outlet passes through the wall of the reaction chamber by gas circulation pipe Connect the injector is inhaled into fluid inlet,
The water inlet is set to the bottom of the jet reaction chamber,
Column plate and the second catalytic bed are provided in the tower reaction chamber, the water outlet is set to the tower reaction chamber Bottom, air inlet are respectively communicated with the lower section of whole column plates in the tower reaction chamber and described by air inlet pipe and air intake branch Gas circulation pipe,
The gas circulation pipe connects offgas outlet by tail gas branch pipe.
Further, circulating pump is additionally provided on the water-circulating pipe.
Further, the height of the partition is the 1/2 ~ 4/5 of the reaction chamber height.
Further, side wall 1/3d ~ 2/3d of the vertical center line of the partition apart from the reaction chamber, wherein d is described The cross-sectional diameter of reaction chamber.That is, the cross section of reaction chamber is separated into 3 parts with one group of parallel lines, wherein parallel lines are distinguished At 1/3d and at 2/3d, then partition is then set on this group of parallel lines or between this group of parallel lines.
Further, first catalytic bed is provided with 2 ~ 5 layers, wherein 1 ~ 2 layer of lower section for being set to the injector, Remaining the first catalytic bed is set to the top of the injector.
Further, the cross section of first catalytic bed is identical as the cross section of the jet reaction chamber.
Further, the circulating outlet is set to the top of the injector.
Further, second catalytic bed is set to the downcomer region of the column plate.
Further, the cross section of second catalytic bed is identical as the cross section of the downspout.
Further, the height of second catalytic bed is the 1/3 ~ 3/3 of the downspout height.
Further, the gas flow in the air inlet pipe and the air intake branch is distributed by valve regulated.
Further, the gas flow in the gas circulation pipe and the tail gas branch pipe is distributed by valve regulated.
The present invention also provides a kind of methods for carrying out catalytic ozonation waste water reaction using above-mentioned reactor, comprising: useless Water is entered the bottom of the jet reaction chamber by the water inlet, is flowed up, and flows into injection through circulating outlet, water-circulating pipe The working fluid import of device forms gas-liquid mixture and sprays downwards after mixing with the ozone from air inlet, the gas-liquid mixed Object overflows over partition top, into tower reaction chamber, by column plate and second by the catalysis reaction of the first catalytic bed upwards While catalytic bed flows downward with the further hybrid reaction of ozone from tower reaction chamber bottom, preferably via tower anti- The water outlet in bottom of chamber portion is answered to flow out;The complete gas of unreacted is come back to by the gas outlet at the top of reaction chamber via gas circulation pipe Reaction is participated in injector;Tail gas is discharged via offgas outlet.
Beneficial effects of the present invention are as follows: injector can produce microbubble, design in conjunction with special structure, strengthen gas Liquid consolidates mass transfer between three-phase, improves reaction rate, shortens the reaction time, reduces equipment investment;By adjusting outlet valve, control Discharge outlet ozone concentration improves ozone utilization rate;Jet reaction area strengthens reaction rate, and tower reaction zone reduces returning for waste water It is mixed.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the reactor of catalytic ozonation waste water of the present invention.
Fig. 2 is partition location diagram, and wherein partition is set to shadow region.
Fig. 3 is the first catalytic bed distribution schematic diagram.
Wherein, 1 is gas outlet, and 2 be reaction chamber, and 3 be jet reaction chamber, and 4 be circulating outlet, and 5 be partition, and 6 be tower Reaction chamber, 7 be injector, and 8 be gas circulation pipe, and 9,10,19,17 be valve, and 11 be water inlet, and 12 be air intake branch, and 13 are Column plate, 14 be water-circulating pipe, and 15 be circulating pump, and 16 be the second catalytic bed, and 18 be water outlet, and 20 be the first catalytic bed.
Specific embodiment
A kind of reactor of catalytic ozonation waste water as shown in Fig. 1 ~ 3, comprising: reaction chamber 2 and be set to described anti- Answer water inlet 11, water outlet 18, gas outlet 1 and the circulating outlet 4 on the wall of chamber 2;
The reaction chamber 2 is internally provided with longitudinal partition 5, between 5 top of partition and the top of the reaction chamber 2 there are Gap, 5 bottom of partition are fixedly connected with the bottom of the reaction chamber 2, and the partition 5 is by the lower part of the reaction chamber 2 It is divided into jet reaction chamber 3 and tower reaction chamber 6 mutually indepedent and be only connected to by 5 upper space of partition,
The first catalytic bed 20 and injector 7 are provided in the jet reaction chamber 3, the circulating outlet 4 is set to described The top of jet reaction chamber 3, the circulating outlet 4 connect the spray by the wall that water-circulating pipe 14 passes through the reaction chamber 2 The outlet of the working fluid import of emitter 7, the injector 7 is downward,
The gas outlet 1 is set to the top of the reaction chamber 2, and the gas outlet 1 passes through the reaction chamber by gas circulation pipe 8 What 2 wall connected the injector 7 is inhaled into fluid inlet,
The water inlet 11 is set to the bottom of the jet reaction chamber 3,
Column plate 13 and the second catalytic bed 16 are provided in the tower reaction chamber 6, the water outlet 18 is set to described tower The bottom of reaction chamber 6, air inlet are respectively communicated with whole column plates in the tower reaction chamber 6 by air inlet pipe and air intake branch 12 Lower section and the gas circulation pipe 8,
The gas circulation pipe 8 connects offgas outlet by tail gas branch pipe.
Circulating pump 15 is additionally provided on the water-circulating pipe 14.
The height of the partition 5 is the 1/2 ~ 4/5 of 2 height of reaction chamber.
Side wall 1/3d ~ 2/3d of the vertical center line of the partition 5 apart from the reaction chamber 2, wherein d is the reaction chamber 2 Cross-sectional diameter.That is, the cross section of reaction chamber 2 is separated into 3 parts with one group of parallel lines, wherein parallel lines are located at 1/ At 3d and at 2/3d, then partition is then set on this group of parallel lines or between this group of parallel lines.
First catalytic bed 20 is provided with 2 ~ 5 layers, wherein 1 ~ 2 layer of lower section for being set to the injector 7, remaining First catalytic bed 20 is set to the top of the injector 7.
The cross section of first catalytic bed 20 is identical as the cross section of the jet reaction chamber 3.
The circulating outlet 4 is set to the top of the injector 7.
Second catalytic bed 16 is set to the downcomer region of the column plate 13.
The cross section of second catalytic bed 16 is identical as the cross section of the downspout.
The height of second catalytic bed 16 is the 1/3 ~ 3/3 of the downspout height.
Gas flow in the air inlet pipe and the air intake branch 12 is distributed by valve regulated.
Gas flow in the gas circulation pipe 8 and the tail gas branch pipe is distributed by valve regulated.
Embodiment 1
Using above-mentioned reactor, catalytic ozonation waste water reaction is carried out, waste water enters the jet reaction by the water inlet The bottom of chamber, flows up, through circulating outlet, water-circulating pipe flow into injector working fluid import, with come from air inlet Ozone mixing after formed gas-liquid mixture spray downwards, the gas-liquid mixture by the first catalytic bed catalysis reaction, to Overflow crosses partition top, into tower reaction chamber, while flowing downward by column plate and the second catalytic bed with come from The further hybrid reaction of ozone of tower reaction chamber bottom is preferably flowed out via the water outlet of tower reaction chamber bottom;Unreacted Complete gas is come back to via gas circulation pipe by the gas outlet at the top of reaction chamber and participates in reacting in injector;Tail gas is via tail Gas outlet discharge.
Ozone can produce microbubble in jet reaction area, strengthen mass transfer between gas-liquid-solid three-phase, improve reaction rate, Shorten the reaction time, reduces equipment investment.The gas flow distribution of two pipelines is adjusted by valve 17,9, controllable tail gas goes out Halitosis oxygen concentration improves ozone utilization rate.
Using the waste water of above-mentioned reactor for treatment class containing phenyl ring COD400mg/L, when COD drops to 80mg/L, residence time No more than 0.75 hour, tail gas foul smell detected that concentration is 1 ~ 5 ppm, handled above-mentioned waste water using common bubbling reactor, Residence time is usually not less than 1.5 hours, and tail gas ozone detects that concentration is 60 ~ 120ppm, and comparison discovery is handled same useless Water, using above-mentioned reactor, shorter residence time at least 1/2, equipment volume reduces at least 1/2, and the usage amount of catalyst is reduced At least 1/2, equipment investment cost reduces nearly 1/2, and ozone utilization rate greatly improves.

Claims (10)

1. a kind of reactor of catalytic ozonation waste water characterized by comprising reaction chamber and be set to the reaction chamber Water inlet, water outlet, gas outlet and circulating outlet on wall;
The reaction chamber is internally provided with longitudinal partition, and there are skies between the partition top and the top of the reaction chamber Gap, the partition bottom are fixedly connected with the bottom of the reaction chamber, and the lower part of the reaction chamber is divided into phase by the partition Jet reaction chamber and tower reaction chamber mutually independent and be only connected to by partition upper space,
The jet reaction is intracavitary to be provided with the first catalytic bed and injector, and it is anti-that the circulating outlet is set to the jet stream The top of chamber is answered, the circulating outlet connects the workflow of the injector by the wall that water-circulating pipe passes through the reaction chamber The outlet of body import, the injector is downward,
The gas outlet is set to the top of the reaction chamber, and the gas outlet passes through the wall of the reaction chamber by gas circulation pipe Connect the injector is inhaled into fluid inlet,
The water inlet is set to the bottom of the jet reaction chamber,
Column plate and the second catalytic bed are provided in the tower reaction chamber, the water outlet is set to the tower reaction chamber Bottom, air inlet are respectively communicated with the lower section of whole column plates in the tower reaction chamber and described by air inlet pipe and air intake branch Gas circulation pipe,
The gas circulation pipe connects offgas outlet by tail gas branch pipe.
2. the reactor of catalytic ozonation waste water according to claim 1, which is characterized in that on the water-circulating pipe also It is provided with circulating pump.
3. the reactor of catalytic ozonation waste water according to claim 1, which is characterized in that the height of the partition is The 1/2 ~ 4/5 of the reaction chamber height.
4. the reactor of catalytic ozonation waste water according to claim 1, which is characterized in that the vertical center of the partition Side wall 1/3d ~ 2/3d of reaction chamber described in linear distance, wherein d is the cross-sectional diameter of the reaction chamber.
5. the reactor of catalytic ozonation waste water according to claim 1, which is characterized in that first catalytic bed 2 ~ 5 layers are provided with, wherein 1 ~ 2 layer of lower section for being set to the injector, remaining first catalytic bed are set to the injection The top of device.
6. the reactor of catalytic ozonation waste water according to claim 1, which is characterized in that first catalytic bed Cross section it is identical as the cross section of the jet reaction chamber.
7. the reactor of catalytic ozonation waste water according to claim 1, which is characterized in that second catalytic bed It is set to the downcomer region of the column plate.
8. the reactor of catalytic ozonation waste water according to claim 7, which is characterized in that second catalytic bed Cross section it is identical as the cross section of the downspout.
9. the reactor of catalytic ozonation waste water according to claim 7, which is characterized in that second catalytic bed Height be the downspout height 1/3 ~ 3/3.
10. a kind of reactor using any catalytic ozonation waste water of claim 1-9 carries out catalytic ozonation The method of waste water reaction characterized by comprising waste water is entered the bottom of the jet reaction chamber by the water inlet, upwards Flowing flows into the working fluid import of injector, shape after mixing with the ozone from air inlet through circulating outlet, water-circulating pipe It is sprayed downwards at gas-liquid mixture, the gas-liquid mixture overflows over partition by the catalysis reaction of the first catalytic bed upwards Top, into tower reaction chamber, while flowing downward by column plate and the second catalytic bed and from tower reaction chamber bottom The further hybrid reaction of ozone, preferably via tower reaction chamber bottom water outlet flow out;The complete gas of unreacted is by anti- It answers the gas outlet of top of chamber to come back to via gas circulation pipe to participate in reacting in injector;Tail gas is discharged via offgas outlet.
CN201811557679.9A 2018-12-19 2018-12-19 A kind of reactor and its application method of catalytic ozonation waste water Withdrawn CN109437390A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110002575A (en) * 2019-04-09 2019-07-12 中国科学院青岛生物能源与过程研究所 Catalytic ozonation multiple stage circulation reacts continuous processing method
WO2021227135A1 (en) 2020-05-14 2021-11-18 南京延长反应技术研究院有限公司 Benzene selective hydrogenation reaction system and method
WO2021253311A1 (en) 2020-06-17 2021-12-23 南京延长反应技术研究院有限公司 Micro-interface strengthened reaction system and method for preparing polyethylene by means of solution method
CN113929204A (en) * 2021-11-11 2022-01-14 南京延长反应技术研究院有限公司 Micro-interface enhanced ultra-efficient wastewater ozone treatment device and treatment method
WO2022011867A1 (en) 2020-07-16 2022-01-20 南京延长反应技术研究院有限公司 Micro-interface reaction system and method for diesel hydrogenation
DE212020000694U1 (en) 2020-09-17 2022-03-11 Nanjing Yanchang Reaction Technology Research Institute Co. Ltd Microinterfacial manufacturing system for p-methylphenol
DE212020000670U1 (en) 2020-07-16 2022-04-25 Nanjing Yanchang Reaction Technology Research Institute Co. Ltd Coal-to-Ethanol Reaction System
DE212020000665U1 (en) 2020-05-14 2022-04-26 Nanjing Yanchang Reaction Technology Research Institute Co. Ltd Enhanced reaction system for producing cyclohexanone by selective hydrogenation of benzene
WO2022205717A1 (en) 2021-04-01 2022-10-06 南京延长反应技术研究院有限公司 Reaction system and method for preparing butyraldehyde by propylene carbonylation
WO2023284028A1 (en) 2021-07-16 2023-01-19 南京延长反应技术研究院有限公司 Micro-interface enhanced oxidation system and oxidation method for preparing hydrogen peroxide
CN110668551B (en) * 2019-11-11 2023-05-26 南京大学盐城环保技术与工程研究院 Ozone catalytic device and method
CN116282462A (en) * 2022-10-08 2023-06-23 南京大学盐城环保技术与工程研究院 Photocatalysis device for advanced treatment of biochemical tail water and photocatalysis process thereof

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110002575A (en) * 2019-04-09 2019-07-12 中国科学院青岛生物能源与过程研究所 Catalytic ozonation multiple stage circulation reacts continuous processing method
CN110668551B (en) * 2019-11-11 2023-05-26 南京大学盐城环保技术与工程研究院 Ozone catalytic device and method
WO2021227135A1 (en) 2020-05-14 2021-11-18 南京延长反应技术研究院有限公司 Benzene selective hydrogenation reaction system and method
DE212020000665U1 (en) 2020-05-14 2022-04-26 Nanjing Yanchang Reaction Technology Research Institute Co. Ltd Enhanced reaction system for producing cyclohexanone by selective hydrogenation of benzene
WO2021253311A1 (en) 2020-06-17 2021-12-23 南京延长反应技术研究院有限公司 Micro-interface strengthened reaction system and method for preparing polyethylene by means of solution method
WO2022011867A1 (en) 2020-07-16 2022-01-20 南京延长反应技术研究院有限公司 Micro-interface reaction system and method for diesel hydrogenation
DE212020000670U1 (en) 2020-07-16 2022-04-25 Nanjing Yanchang Reaction Technology Research Institute Co. Ltd Coal-to-Ethanol Reaction System
DE212020000694U1 (en) 2020-09-17 2022-03-11 Nanjing Yanchang Reaction Technology Research Institute Co. Ltd Microinterfacial manufacturing system for p-methylphenol
WO2022205717A1 (en) 2021-04-01 2022-10-06 南京延长反应技术研究院有限公司 Reaction system and method for preparing butyraldehyde by propylene carbonylation
WO2023284028A1 (en) 2021-07-16 2023-01-19 南京延长反应技术研究院有限公司 Micro-interface enhanced oxidation system and oxidation method for preparing hydrogen peroxide
CN113929204A (en) * 2021-11-11 2022-01-14 南京延长反应技术研究院有限公司 Micro-interface enhanced ultra-efficient wastewater ozone treatment device and treatment method
CN116282462A (en) * 2022-10-08 2023-06-23 南京大学盐城环保技术与工程研究院 Photocatalysis device for advanced treatment of biochemical tail water and photocatalysis process thereof

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Application publication date: 20190308