CN105561782A - Three-phase multi-medium catalyzing and oxidizing tower - Google Patents
Three-phase multi-medium catalyzing and oxidizing tower Download PDFInfo
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- CN105561782A CN105561782A CN201610045430.4A CN201610045430A CN105561782A CN 105561782 A CN105561782 A CN 105561782A CN 201610045430 A CN201610045430 A CN 201610045430A CN 105561782 A CN105561782 A CN 105561782A
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- tower
- catalytic oxidation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8603—Removing sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20753—Nickel
Abstract
The invention provides a three-phase multi-medium catalyzing and oxidizing tower, and belongs to the field of waste gas purifying towers. The three-phase multi-medium catalyzing and oxidizing tower comprises a tower body. A gas outlet and a gas inlet are formed in the tower body, special filling layers are arranged in the tower, a liquid distributing system is arranged on the special filling layers, and the input end of the liquid distributing system is connected to the lower portion of the side face of the tower body through a circulating pump; three branch pipes are arranged on a circulating pipe connected with the circulating pump and are connected to the output ends of three chemical feeding pumps through three flow regulating valves respectively, the input ends of the three chemical feeding pumps are connected to three chemical feeding tanks respectively, and the three chemical feeding tanks include the oxidizing agent tank, the dilute acid tank and the ferrous tank. The three-phase multi-medium catalyzing and oxidizing tower has the quite high removing capacity for recalcitrant pollutants such as organic sulfur and amine, and waste gas which contains explosive components and can not be treated with the photoelectric technology can also be treated.
Description
Technical field
The invention provides a kind of three-phase multimedium catalytic oxidation tower, belong to Tower for purifying waste gas field.
Background technology
Various organic exhaust gas and inorganic waste gases often can be produced in the industry production processes such as chemical industry, oil refining, pharmacy, leather, papermaking, spraying; in waste gas, pollutant component complexity is various; mainly contain acids, alcohols, aldehydes, ketone, ester class, sulfide, alkene, alkane, aromatic hydrocarbon, phenols, organic amine, organic sulfur compound, heterocyclic etc.; be discharged in air and severe contamination is caused to environment; wherein major part is all poisonous and harmful substance, and harm humans is healthy.
Industrial waste gas treatment process conventional both at home and abroad at present has combustion method, oxidizing process, absorption process, absorption method, bioanalysis, photoelectric technology etc.Combustion method is burned thoroughly pollutant, but dangerous property and burning produce the secondary pollution problems such as bioxin; Regular oxidation method treating apparatus is simple, but purification efficiency is not high, restricted application; Absorption process only has can be dissolved in absorbing liquid or the pollutant that can react with absorbing liquid just can be efficiently removed; Adsorption method for purifying is effective but adsorbent reactivation difficult; Bioanalysis anti impulsion load ability, microorganism are cultivated complicated; The photoelectric technologies such as low-temperature plasma are applied widely, and purification efficiency is high, but when having damp in waste gas, danger is larger.
Summary of the invention
The object of the invention is to provide a kind of three-phase multimedium catalytic oxidation tower, and this tower has extremely strong removal ability to the Recalcitrant chemicals such as organic sulfur, amine, the waste gas of photoelectric technology cannot be adopted also to process to containing explosive component.
Three-phase multimedium catalytic oxidation tower of the present invention, comprise tower body, tower body is provided with gas outlet and air inlet, special packing layer is provided with in tower, fluid distribution system is provided with above special packing layer, the input of fluid distribution system is connected to tower body side lower by circulating pump, , the circulation line that circulating pump connects is provided with three branch lines, three branch lines are connected to three dosing pump outputs respectively by three flow control valves, three dosing pump inputs are connected respectively to three grug feeding jars, three grug feeding jars are respectively oxidant tank, diluted acid tank and ferrous tank.
Described three-phase multimedium catalytic oxidation tower, the spray of the even in liquid phase containing compound oxidant after fluid distribution system atomization is at solid phase filling surface, from top to bottom flow through in the space of filler, and wetting filling surface forms the liquid film of flowing, and enter stuffing hole gap passage, increase contact area, compound oxidant is oxidant tank, solvent in diluted acid tank and ferrous tank mixes in proportion.Waste gas passes packing layer from bottom to top under air-introduced machine effect, mass transport process is there is with reverse contact of liquid film, polluter in waste gas is decomposed with the oxidant generation redox reaction in liquid phase under catalyst action, finally become the free of contamination inorganic matters such as CO2, under solid-liquid-gas three phase reciprocation, in waste gas, polluter is removed.Simultaneously because three branch lines directly access circulation line, the compound oxidant just mixed can the very first time and waste gas react, and reaches best reaction effect, can reach clean-up effect within the shortest time.Waste gas after purification is discharged from tower top, and the liquid phase absorbing polluter is collected at the bottom of tower, recycles through spray pump, reaches finite concentration rear substitution and discharges.
Described three-phase multimedium catalytic oxidation tower, its action principle is, in sour environment, hydrogen peroxide produces great amount of hydroxy group (OH) under ferrous iron and solid-phase catalyst effect, OH has extremely strong oxidability, can carry out scission of link cracking to contaminant molecule, it is oxidized to free of contamination inorganic matter the most at last.Special bamboo-carbon filler is the contact interface providing abundance of catalytic oxidation, enhances the effect of mass transmitting between liquid phase.Make the present invention have extremely strong removal ability to the Recalcitrant chemicals such as organic sulfur, amine, and this tower is wet type operation, the waste gas of photoelectric technology cannot be adopted also to process to containing explosive component.
Described three-phase multimedium catalytic oxidation tower, is provided with air distribution plate below speciality packing layer.Arrange perforated distributor bottom every layer of filler, percent opening >=80%, cloth wind is even, vapour lock is little, is beneficial to gas phase and is uniformly distributed, and improves the present invention and goes deimpurity ability.
Described three-phase multimedium catalytic oxidation tower, is provided with dehydrater below gas outlet, and the gas after process is discharged from gas outlet by after dehydrater again.Prevent from out tower waste gas to carry drop to impact environment or follow-up equipment, improve practicality of the present invention.
Described three-phase multimedium catalytic oxidation tower, special packing layer number be one and more than, fluid distribution system is provided with above each special packing layer, below is provided with air distribution plate, and fluid distribution system is provided with multiple atomizer, and the liquid of circulating pump conveying is sprayed by atomizer, atomizer is arranged through reasonable layout, coverage rate reaches 250%-300%, and atomizing effect is good, carries out dispersed to liquid phase.
PH meter is provided with below described three-phase multimedium catalytic oxidation tower tower body, tower body is provided with control device, PH meter is connected to the signal receiving end of control device, the signal output part of control device is connected to the control end of flow control valve and electric pump, and control device regulates diluted acid addition by the pH value of PH meter feedback.Described PH regulating system, PH regulating system is counted by the online PH be arranged at the bottom of tower and flow control valve in diluted acid drug feeding pipeline forms, PH control range 1-5, be pH value to 5 time start to add diluted acid, pH value to 1 time stop add diluted acid, automatically control diluted acid addition according to pH value in tower.
Described three-phase multimedium catalytic oxidation tower, tower body is provided with moisturizing pipeline and drainage pipeline, is provided with water-level gauge bottom tower body, monitors liquid level at the bottom of tower.
Described three-phase multimedium catalytic oxidation tower, the filler of special packing layer is modification bamboo charcoal, packing specific area 300-700m
2/ g, special bed stuffing height is 200-700mm/ layer.Filler, while loading catalyst, can provide abundant interface for mass-transfer progress, improves mass-transfer efficiency.
Described three-phase multimedium catalytic oxidation tower, empty tower gas velocity is 0.1m/s-1m/s, exhaust gas residence time 20s-40s.Waste gas can fully contact with liquid phase and catalyst and can react fully if having time, effectively ensure that scrubbing efficiency of the present invention.
Described three-phase multimedium catalytic oxidation tower, the Fenton-type reagent that hydrogen peroxide, acid solution and ferrous ions soln in oxidant tank, diluted acid tank and ferrous tank are mixed in tower body is the compound oxidant solution prepared by a certain percentage, in practical application, process different waste gas by adjustment hydrogen peroxide from the ratio that adds of ferrous ions soln.Described catalyst is the nickel-base catalyst based on nickel sesquioxide.
Described three-phase multimedium catalytic oxidation tower, hydrogen peroxide, ferrous ion add in proportion, hydrogen peroxide addition is relevant to the amount of pollutant to be removed in waste gas, 0.1:1-1:1 adds in mass ratio, ferrous ion and hydrogen peroxide in molar ratio example add, be generally 1:2 ~ 1:10, concrete addition is determined through lab scale test according to waste gas situation.Controlled by magnetic valve and dosing pump in practical operation.
Described three-phase multimedium catalytic oxidation tower, acid solution is one or more in sulfuric acid, hydrochloric acid, oxalic acid.
Described three-phase multimedium catalytic oxidation tower, ferrous ions soln is one or more in ferrous sulfate, frerrous chloride, ferrous oxalate, also can be configured by pressed powder for solution.
The present invention compared with prior art beneficial effect is:
(1) to the pollutant component in the industrial waste gases such as acids, alcohols, aldehydes, ketone, ester class, sulfide, alkene, alkane, aromatic hydrocarbon, phenols, organic amine, organic sulfur compound, heterocyclic, all there is higher clearance, wherein, the clearance of organic sulfur compound reaches more than 95%, is particularly useful for the purified treatment of the component being insoluble in water;
(2) solid phase filler is the modification bamboo charcoal being mounted with nickel-base catalyst, and specific area is high, porosity is large and vapour lock is little, and the loss late of catalyst is low;
(3) what treatment process of the present invention adopted is Wet technique, therefore applicable equally to the waste gas containing explosive component, has inlet air conditions without strict restriction, feature applied widely;
(4) three branch lines connecting oxidant tank, diluted acid tank and ferrous tank directly access circulation line, the compound oxidant just mixed can the very first time and waste gas react, reach best reaction effect, clean-up effect can be reached within the shortest time;
(5) reaction in tower is the hybrid reaction of liquid phase, solid phase and gas phase, owing to there is liquid phase, and also can the process of safety to the waste gas that cannot adopt photoelectric technology containing explosive component.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1, tower body; 2, fluid distribution system; 3, special packing layer; 4, air inlet; 5, circulating pump; 6, water-level gauge; 7, PH meter; 8, dosing pump; 9, oxidant tank; 10, diluted acid tank; 11, ferrous tank; 12, flow control valve; 13, air distribution plate; 14, atomizer; 15, dehydrater; 16, gas outlet.
Detailed description of the invention
Below in conjunction with the present invention, the embodiment of the present invention is described further:
Embodiment 1: as shown in Figure 1, three-phase multimedium catalytic oxidation tower of the present invention, comprise tower body 1, tower body 1 is provided with gas outlet 16 and air inlet 4, special packing layer 3 is provided with in tower, fluid distribution system 2 is provided with above speciality packing layer, special packing layer number is three, every layer of bed stuffing height is 400mm, fluid distribution system 2 is provided with above each speciality packing layer, below is provided with air distribution plate 13, and fluid distribution system 2 is provided with atomizer 14, and the liquid that circulating pump 5 is carried is sprayed by atomizer 14; The input of fluid distribution system 2 is connected to tower body 1 side lower by circulating pump 5, the circulation line that circulating pump 5 connects is provided with three branch lines, three branch lines are connected to three dosing pump 8 outputs respectively by three flow control valves 12, three dosing pump 8 inputs are connected respectively to oxidant tank 9, diluted acid tank 10 and ferrous tank 11, air distribution plate 13 is provided with below speciality packing layer, be provided with dehydrater 15 below gas outlet 16, the gas after process is by discharging from gas outlet 16 after dehydrater 15 again; In tower body 1, below is provided with PH meter 7, tower body 1 is provided with control device, PH meter 7 is connected to the signal receiving end of control device, the signal output part of control device is connected to the control end of flow control valve 12 and dosing pump 8, control device regulates diluted acid addition by the pH value of PH meter 7 feedback, and hydrogen peroxide and ferrous addition are controlled to ratio by flow control valve 12 to be added; Tower body 1 is provided with moisturizing pipeline and drainage pipeline, and moisturizing pipeline and drainage pipeline are equipped with magnetic valve, and tower body 1 bottom is provided with water-level gauge 6 and is used to indicate water level, and two outputs of water-level gauge are connected respectively to moisturizing pipeline and drainage pipeline; The mechanism of special packing layer 3 is modification bamboo charcoal, loads the nickel-base catalyst based on nickel sesquioxide, packing specific area 600m
2/ g, special packing layer 3 is highly 500mm/ layer; Empty tower gas velocity in tower body 1 is 0.4m/s, exhaust gas residence time 25s.
Claims (10)
1. a three-phase multimedium catalytic oxidation tower, comprise tower body (1), tower body (1) is provided with gas outlet (16) and air inlet (4), it is characterized in that, special packing layer (3) is provided with in tower, fluid distribution system (2) is provided with above speciality packing layer, the input of fluid distribution system (2) is connected to tower body (1) side lower by circulating pump (5), the circulation line that circulating pump (5) connects is provided with three branch lines, three branch lines are connected to three dosing pump (8) outputs respectively by three flow control valves (12), three dosing pump (8) inputs are connected respectively to three grug feeding jars, three grug feeding jars are respectively diluted acid tank (10), oxidant tank (9) and ferrous tank (11).
2. three-phase multimedium catalytic oxidation tower according to claim 1, is characterized in that, special packing layer (3) below is provided with air distribution plate (13).
3. three-phase multimedium catalytic oxidation tower according to claim 1, it is characterized in that, below, gas outlet (16) is provided with dehydrater (15), and the gas after process is discharged from gas outlet (16) by after dehydrater (15) again.
4. three-phase multimedium catalytic oxidation tower according to claim 1, it is characterized in that, special packing layer (3) number be one and more than, each special packing layer (3) top is provided with fluid distribution system (2), below is provided with air distribution plate (13), fluid distribution system (2) is provided with atomizer (14), and the liquid that circulating pump (5) is carried is sprayed by atomizer (14).
5. three-phase multimedium catalytic oxidation tower according to claim 1, it is characterized in that, in tower body (1), below is provided with PH meter (7), tower body (1) is provided with control device, PH meter (7) is connected to the signal receiving end of control device, the signal output part of control device is connected to the control end of flow control valve (12) and electric pump, the pH value that control device is fed back by PH meter (7) regulates diluted acid addition, regulates liquid phase pH value to be 1-5.
6. three-phase multimedium catalytic oxidation tower according to claim 5, it is characterized in that, tower body (1) is provided with moisturizing pipeline and drainage pipeline, and tower body (1) bottom is provided with water-level gauge (6), monitors liquid level at the bottom of tower.
7. three-phase multimedium catalytic oxidation tower according to claim 1, it is characterized in that, the mechanism of special packing layer (3) is modification bamboo charcoal, loads the nickel-base catalyst based on nickel sesquioxide, packing specific area 300-700m
2/ g, special packing layer (3) is highly 200-700mm/ layer.
8. three-phase multimedium catalytic oxidation tower according to claim 1, it is characterized in that, the wind speed in tower body (1) is 0.1-1 metre per second (m/s), and waste gas effective time of staying is 20-40s.
9. three-phase multimedium catalytic oxidation tower according to claim 1, it is characterized in that, the oxidant in oxidant tank (9) is hydrogen peroxide.
10. three-phase multimedium catalytic oxidation tower according to claim 1, is characterized in that, the ferrous ion in ferrous tank (11) adds with the hydrogen peroxide in oxidant tank (9) is routine in molar ratio, and ratio is 1:2 ~ 1:10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610045430.4A CN105561782A (en) | 2016-01-22 | 2016-01-22 | Three-phase multi-medium catalyzing and oxidizing tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610045430.4A CN105561782A (en) | 2016-01-22 | 2016-01-22 | Three-phase multi-medium catalyzing and oxidizing tower |
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| CN105561782A true CN105561782A (en) | 2016-05-11 |
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| CN201610045430.4A Pending CN105561782A (en) | 2016-01-22 | 2016-01-22 | Three-phase multi-medium catalyzing and oxidizing tower |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106178901A (en) * | 2016-08-31 | 2016-12-07 | 海南兴能泰环境科技有限公司 | A kind of advanced oxidation purification method administering volatile organic waste gas in production of flavor and device |
| CN106669394A (en) * | 2016-12-28 | 2017-05-17 | 江苏碧诺环保科技有限公司 | Oil sludge tail gas treatment process |
| CN106731576A (en) * | 2016-12-28 | 2017-05-31 | 江苏碧诺环保科技有限公司 | A kind of greasy filth exhaust gas processing device |
| CN107469506A (en) * | 2016-06-07 | 2017-12-15 | 中国石油化工股份有限公司 | The method and device of low temperature plasma pyrolysis oxidization reactor for treatment foul waste gas |
| CN107522257A (en) * | 2016-06-21 | 2017-12-29 | 江苏如意环境工程有限公司 | Ultrasonic wave and UV photodissociation Fenton towers |
| CN109046018A (en) * | 2018-09-30 | 2018-12-21 | 广东键盟环保科技有限公司 | A kind of VOC exhaust gas liquid phase photocatalysis treatment system and VOC waste gas processing method |
| CN112573721A (en) * | 2020-12-29 | 2021-03-30 | 深圳市同创环保科技有限公司 | Efficient low-temperature condensation waste liquid reduction device and method for treating medical waste liquid |
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| JPS62171732A (en) * | 1986-01-23 | 1987-07-28 | Gadelius Kk | Treatment of exhaust gas |
| CN101259375A (en) * | 2007-12-17 | 2008-09-10 | 昆明理工大学 | Method for purifying reducing organic waste gases |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107469506A (en) * | 2016-06-07 | 2017-12-15 | 中国石油化工股份有限公司 | The method and device of low temperature plasma pyrolysis oxidization reactor for treatment foul waste gas |
| CN107522257A (en) * | 2016-06-21 | 2017-12-29 | 江苏如意环境工程有限公司 | Ultrasonic wave and UV photodissociation Fenton towers |
| CN106178901A (en) * | 2016-08-31 | 2016-12-07 | 海南兴能泰环境科技有限公司 | A kind of advanced oxidation purification method administering volatile organic waste gas in production of flavor and device |
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| CN106731576A (en) * | 2016-12-28 | 2017-05-31 | 江苏碧诺环保科技有限公司 | A kind of greasy filth exhaust gas processing device |
| CN109046018A (en) * | 2018-09-30 | 2018-12-21 | 广东键盟环保科技有限公司 | A kind of VOC exhaust gas liquid phase photocatalysis treatment system and VOC waste gas processing method |
| CN112573721A (en) * | 2020-12-29 | 2021-03-30 | 深圳市同创环保科技有限公司 | Efficient low-temperature condensation waste liquid reduction device and method for treating medical waste liquid |
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Application publication date: 20160511 |