CN101342461A - Novel impulse photocatalysis-later metallic oxide catalysis plasma reactor - Google Patents
Novel impulse photocatalysis-later metallic oxide catalysis plasma reactor Download PDFInfo
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- CN101342461A CN101342461A CNA2008100541350A CN200810054135A CN101342461A CN 101342461 A CN101342461 A CN 101342461A CN A2008100541350 A CNA2008100541350 A CN A2008100541350A CN 200810054135 A CN200810054135 A CN 200810054135A CN 101342461 A CN101342461 A CN 101342461A
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- photocatalysis
- plasma reactor
- metallic oxide
- oxide catalysis
- reactor according
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Abstract
The invention relates to a novel pulse photocatalysis-post metallic oxide catalysis plasma reactor, comprising a bowl (4), an end socket (1), an air inlet (9) and an air outlet (2); a metal tube (10) penetrates the bowl (4); an alundum tube (8), a photocatalyzer layer (7) and a tungsten filament (6) are arranged orderly outside the metal tube (10); a metal net (5) is arranged on the inwall of the bowl (4); a post-loaded metallic oxide ball-type catalyzator (3) is arranged on an end closed to the air outlet (2) inside the bowl (4). The novel pulse photocatalysis-post metallic oxide catalysis plasma reactor is capable of effectively removing an indoor volatile organic chemical substance VOCs or an order component of over 90 percent in a sewage plant, thereby having the advantages of good purification effect and high energy utilization ratio.
Description
Technical field
The present invention relates to a kind of plasma reactor, be specifically related to a kind of novel impulse photocatalysis-later metallic oxide catalysis plasma reactor.
Background technology
It is low that indoor air pollutants has concentration, endangers big characteristics, and it has also promoted the process of indoor air purification technology when causing people's extensive concern.At present, the purification method that is still adopted in a large number mainly contains ventilation formula, filtering type and absorption type etc.Yet, can handle contaminant particle size, treatment effeciency, processing toxic and harmful, NOx for example, SOx, VOCs etc., and aspect such as kill bacteria, conventional method can't satisfy the demand of modern Interior air pollution treatment, especially when being used for low concentration air pollutants and handling, cost height, energy consumption are big.
In recent years, new methods such as electrostatic collection, ozone oxidation and gas phase filtration are arisen at the historic moment, in numerous methods, non-thermal plasma trap has obtained people's attention as emerging air pollutants control technology, and its especially is fit to purify to contain the room air that low concentration pollutant is characteristics.Notification number: CN1597057 for example, the Chinese patent literature of the day for announcing: 2005.03.23 has been announced a kind of " low temperature plasma adsoption catalysis flue gas desulfur device and sulfur method thereof ", be a kind of purifying processing device and method at sulfur dioxide, in reactor, be filled with adsoption catalyst, be provided with plasma generator in reactor, high-voltage pulse power source joins with two reaction of low temperature plasma devices respectively by the energy switching device shifter.But in this invention, the driving of plasma and the driving of catalyst all require the expenditure of energy respectively, and the electric energy that plasma discharges then has been wasted, and discharge type is airborne corona discharge, and luminous intensity is limited.Electrostatic collection only can the collecting granules material, can not produce oxidation material and handle the air organic matter.This invention still has shortcomings such as energy consumption height, clean-up effect difference, is unsuitable for promoting the use of on a large scale.
Summary of the invention
The objective of the invention is deficiency, provide that a kind of energy consumption is low, the better pulsed light catalysis of clean-up effect-back catalyze plasma reactor at the existing general energy consumption height of plasma reactor, clean-up effect difference.
The objective of the invention is to realize: a kind of novel impulse photocatalysis-later metallic oxide catalysis plasma reactor by following technological means, comprise cylindrical shell, end socket, air inlet and gas outlet, described cylindrical shell runs through and is provided with metal tube, described metal tube outside is coated with alundum tube, photocatalyst layer and tungsten filament successively, described cylinder inboard wall is provided with wire netting, and the end near the gas outlet in cylindrical shell is provided with back loading metal oxide ball-type catalyst.
Described metal tube is a stainless steel tube.
Described wire netting is a stainless steel wire mesh.
Described end socket is that polythene material is made.
Described tungsten filament twines is arranged to spiral line type.
Described photocatalyst layer is a supported titanium 2.
Described back loading metal oxide ball-type catalyst is: Mn/ γ-Al
2O
3, Cu/ γ-Al
2O
3, Fe/ γ-Al
2O
3, Fe-Mn/ γ-Al
2O
3, Cu-Mn/ γ-Al
2O
3A kind of formation wherein is preferably γ-Al of 1-5mm
2O
3
Described back loading metal oxide ball-type catalyst can also be by Mn/ γ-Al
2O
3, Cu/ γ-Al
2O
3, Fe/ γ-Al
2O
3, Fe-Mn/ γ-Al
2O
3, Cu-Mn/ γ-Al
2O
3The mixture of wherein two or more constitutes.
Described novel impulse photocatalysis-later metallic oxide catalysis plasma reactor input energy density scope 5-200J/L.
Compared with prior art the present invention has following tangible advantage: can utilize the energy that is lost in the ultraviolet light, the common active material that produces of corona discharge pulse and surface-discharge drives load ball-type metal oxide catalyst, but this kind catalyst catabolite ozone, all kinds of oxygen type bodies that further utilize ozone to decompose at catalyst surface continue oxidation air pollutant and intermediate product; Can effectively remove indoor volatile organic chemistry material VOCs or Sewage Plant odor pollutant more than 90%, good purification, energy utilization efficiency height simultaneously.
Description of drawings
Fig. 1 is the structural representation of this pulsed light catalysis-back catalyze plasma reactor.
Among the figure: 1 end socket, 2 gas outlets, 3 back loading metal oxide ball-type catalyst, 4 cylindrical shells,
5 wire nettings, 6 tungsten filaments, 7 photocatalyst layers, 8 alundum tubes, 9 air inlets,
10 metal tubes.
The specific embodiment
The present invention is described in further detail below in conjunction with description of drawings and the specific embodiment:
A kind of novel impulse photocatalysis-later metallic oxide catalysis plasma reactor as shown in Figure 1, comprise cylindrical shell 4, end socket 1, air inlet 9 and gas outlet 2, described cylindrical shell 4 inwalls tighten to be sticked puts layer of metal net 5, and described wire netting 5 is a stainless steel wire mesh.On described cylindrical shell 4 axis, run through being provided with metal tube 10, preferably adopt stainless steel tube, and at one end ground connection is provided with; The outer setting that tightly is enclosed within described metal tube 10 interludes has alundum tube 8, and alundum tube 8 area loads have photocatalyst layer 7, and described photochemical catalyst is a supported titanium 2.Photochemical catalyst TiO
2Have anti-oxidant and photoetch, stablize nontoxic, catalytic activity is high, advantage such as inexpensive, is to increase specific area, is beneficial to reactant absorption and the augmenting response probability adopts nanometer even quantum stage TiO
2Alundum tube 8 surfaces are also twined and are provided with helix tungsten filament 6; End in the close gas outlet 2 of cylindrical shell 4 is provided with back loading metal oxide ball-type catalyst 3.The loaded article of described back loading metal oxide ball-type catalyst 3 is γ-Al of 1-5mm
2O
3, present embodiment is γ-Al of 3mm
2O
3, certainly, back loading metal oxide ball-type catalyst 3 can also be: Mn/ γ-Al
2O
3, Cu/ γ-Al
2O
3, Fe/ γ-Al
2O
3, Fe-Mn/ γ-Al
2O
3, Cu-Mn/ γ-Al
2O
3One or more metal oxide ball-type mixture of catalysts are wherein preferably selected Fe-Mn/ γ-Al for use
2O
3Binary catalyst.
This novel impulse photocatalysis-later metallic oxide catalysis plasma reactor, in fact the plasma discharge district comprises: a helix tungsten filament 6 that is wrapped in alundum tube 8 surfaces is done positive electrode, with two negative electrodes, promptly insert stainless steel tube 10 and the wire netting 5 of being close to reactor wall in the alundum tube 8, when applying pulse high-voltage, best outfit pulsed high voltage generator is high voltage pulse 20kV, frequency 200Hz, discharge capacity 200pF, between helix tungsten filament 6 and wire netting 5, produce corona discharge pulse, between helix tungsten filament 6 and stainless steel tube 10, produce surface-discharge simultaneously.Reasonably design should guarantee that processed air is in stable corona discharge state in reactor.This novel pulsed light catalysis one back metal oxide oxidation catalyst plasma reactor produces corona discharge pulse and surface-discharge simultaneously, described corona discharge pulse gas passage perpendicular to axial direction, the surface-discharge meeting gives off ultraviolet light, drive loaded photocatalyst, thereby utilize the energy that is lost in the ultraviolet light; The common active material that produces of corona discharge pulse and surface-discharge drives back loading metal oxide ball-type catalyst 3, generally also be commonly referred to as the back metal oxide catalyst, but this kind catalyst catabolite ozone, all kinds of oxygen type bodies that further utilize ozone to decompose at catalyst surface continue oxidation air pollutant and intermediate product.
This novel pulsed light catalysis one back metal oxide oxidation catalyst plasma reactor also can produce corona discharge pulse and surface-discharge respectively separately as required under difference input energy density condition.Reactor input energy density scope 5-200J/L can effectively remove indoor air pollutants or control Sewage Plant odor pollutant more than 90%, the energy utilization efficiency height.
Claims (10)
1. novel impulse photocatalysis-later metallic oxide catalysis plasma reactor, comprise cylindrical shell (4), end socket (1), air inlet (9) and gas outlet (2), it is characterized in that: described cylindrical shell (4) runs through and is provided with metal tube (10), described metal tube (10) outside is coated with alundum tube (8), photocatalyst layer (7) and tungsten filament (6) successively, described cylindrical shell (4) inwall is provided with wire netting (5), and the end near gas outlet (2) in the described cylindrical shell (4) is provided with back loading metal oxide ball-type catalyst (3).
2. a kind of novel impulse photocatalysis-later metallic oxide catalysis plasma reactor according to claim 1 is characterized in that described metal tube (10) is a stainless steel tube.
3. a kind of novel impulse photocatalysis-later metallic oxide catalysis plasma reactor according to claim 1 is characterized in that described wire netting (5) is a stainless steel wire mesh.
4. a kind of novel impulse photocatalysis-later metallic oxide catalysis plasma reactor according to claim 1 is characterized in that described end socket (1) is made for polythene material.
5. a kind of novel impulse photocatalysis-later metallic oxide catalysis plasma reactor according to claim 1 is characterized in that, described tungsten filament (6) twines is arranged to spiral line type.
6. a kind of novel impulse photocatalysis-later metallic oxide catalysis plasma reactor according to claim 1 is characterized in that described photocatalyst layer (7) is a supported titanium
2
7. a kind of novel impulse photocatalysis-later metallic oxide catalysis plasma reactor according to claim 1 is characterized in that the loaded article of described back loading metal oxide ball-type catalyst (3) is: Mn/ γ-Al
2O
3, Cu/ γ-Al
2O
3, Fe/ γ-Al
2O
3, Fe-Mn/ γ-Al
2O
3, Cu-Mn/ γ-Al
2O
3A kind of formation wherein.
8. a kind of novel impulse photocatalysis-later metallic oxide catalysis plasma reactor according to claim 7 is characterized in that the loaded article of described back loading metal oxide ball-type catalyst (3) is γ-Al of 1-5mm
2O
3
9. a kind of novel impulse photocatalysis-later metallic oxide catalysis plasma reactor according to claim 1 is characterized in that the loaded article of described back loading metal oxide ball-type catalyst (3) is Mn/ γ-Al
2O
3, Cu/ γ Al
2O
3, Fe/ γ-Al
2O
3, Fe-Mn/ γ-Al
2O
3, Cu-Mn/ γ-Al
2O
3The mixture of wherein two or more constitutes.
10. a kind of novel impulse photocatalysis-later metallic oxide catalysis plasma reactor according to claim 1, it is characterized in that described novel impulse photocatalysis-later metallic oxide catalysis plasma reactor input energy density scope is 5-200J/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100541350A CN101342461B (en) | 2008-08-15 | 2008-08-15 | Novel impulse photocatalysis-later metallic oxide catalysis plasma reactor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100541350A CN101342461B (en) | 2008-08-15 | 2008-08-15 | Novel impulse photocatalysis-later metallic oxide catalysis plasma reactor |
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| Publication Number | Publication Date |
|---|---|
| CN101342461A true CN101342461A (en) | 2009-01-14 |
| CN101342461B CN101342461B (en) | 2011-11-30 |
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ID=40244650
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100541350A Expired - Fee Related CN101342461B (en) | 2008-08-15 | 2008-08-15 | Novel impulse photocatalysis-later metallic oxide catalysis plasma reactor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091514A (en) * | 2010-12-28 | 2011-06-15 | 浙江大学 | Device and method for treating obnoxious gas and industrial VOCs |
| CN108786394A (en) * | 2018-06-20 | 2018-11-13 | 中钢集团马鞍山矿山研究院有限公司 | Dielectric impedance low-temperature plasma photocatalysis integral type cleaning equipment for waste organic gas |
| CN110292854A (en) * | 2019-07-03 | 2019-10-01 | 浙江工商大学 | A kind of pulse plasma couples the apparatus and method of double-fluidized-bed catalytic degradation VOCs |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2621053Y (en) * | 2003-05-07 | 2004-06-23 | 清华大学 | Planar nano titanium dioxide plasma discharge catalytic air purifier |
| CN1864820B (en) * | 2006-04-21 | 2010-05-12 | 中国人民解放军军事医学科学院卫生学环境医学研究所 | A low temperature plasma driven photocatalytic gas purification device |
-
2008
- 2008-08-15 CN CN2008100541350A patent/CN101342461B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091514A (en) * | 2010-12-28 | 2011-06-15 | 浙江大学 | Device and method for treating obnoxious gas and industrial VOCs |
| CN102091514B (en) * | 2010-12-28 | 2013-07-03 | 浙江大学 | Device and method for treating obnoxious gas and industrial VOCs |
| CN108786394A (en) * | 2018-06-20 | 2018-11-13 | 中钢集团马鞍山矿山研究院有限公司 | Dielectric impedance low-temperature plasma photocatalysis integral type cleaning equipment for waste organic gas |
| CN110292854A (en) * | 2019-07-03 | 2019-10-01 | 浙江工商大学 | A kind of pulse plasma couples the apparatus and method of double-fluidized-bed catalytic degradation VOCs |
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| Publication number | Publication date |
|---|---|
| CN101342461B (en) | 2011-11-30 |
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Granted publication date: 20111130 Termination date: 20210815 |