CN109821372A - A kind of microwave induced metal discharge carries out the device and method of denitrating flue gas - Google Patents
A kind of microwave induced metal discharge carries out the device and method of denitrating flue gas Download PDFInfo
- Publication number
- CN109821372A CN109821372A CN201910129020.1A CN201910129020A CN109821372A CN 109821372 A CN109821372 A CN 109821372A CN 201910129020 A CN201910129020 A CN 201910129020A CN 109821372 A CN109821372 A CN 109821372A
- Authority
- CN
- China
- Prior art keywords
- microwave
- flue gas
- carries out
- denitrating flue
- microwave leakage
- 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.)
- Pending
Links
Abstract
The present invention provides the devices that a kind of microwave induced metal discharge carries out denitrating flue gas, it is characterized in that, including channel-type microwave reactor, the channel-type microwave reactor includes anti-microwave leakage cabinet, magnetron and anti-microwave leakage net, and the anti-microwave leakage cabinet has smoke inlet and exhanst gas outlet；Anti-microwave leakage box house setting discharge module and high temperature stent, discharge module are fixed in high temperature stent；Anti-microwave leakage network arrangements are in the smoke inlet and smoke outlet of anti-microwave leakage cabinet, and the magnetron setting is outside anti-microwave leakage cabinet.The method of denitration is: the flue gas of nitrogen-containing oxide is passed directly into channel-type microwave reactor, and the high-temperature plasma generated with discharge module is had an effect, and nitrogen oxides dissociates in time when extremely short, and is converted into N2And O2, achieve the effect that denitration, it is this method denitration efficiency height, simple process, without secondary pollution, big without catalyst consumption, application prospect.
Description
Technical field
The present invention relates to a kind of device and methods that denitrating flue gas is carried out using microwave induced metal discharge.
Background technique
Nitrogen oxide NOx be boiler oil burning, discharge in motor vehicle exhaust emission or industrial processes it is poisonous and harmful
Gas, significant damage will be caused to human health and ecological environment by such as dealing with improperly.Effectively control NOx emission is that current environment is protected
The important topic of shield.It has been widely adopted at present and the denitration technology of comparative maturity can be divided mainly into two classes: aflame NOx
Gas denitrifying technology after control technology and burning.Aflame control is mainly by advanced burner, by optimizing furnace
Interior air-flow tissue, or the control of the fractional combustion realization NOx emission by fuel and air.The technology installation and operation cost phase
To cheap, but denitrification rate can only achieve 30~40%.Therefore, individually controlling in use burning often can not be up to standard, needs to combine
Gas denitrifying technology.The relatively broad gas denitrifying technology of domestic and international application is selective catalytic reduction (Selective
Catalytic Reduction, SCR) technology.SCR technology is relatively mature, and denitration efficiency is high (up to 90% or more), but
Simultaneously also have investment it is huge, operating cost is high, catalyst is expensive and it is easy poisoning etc. unfavorable factors.Based on this, the present invention is mentioned
A kind of method for having supplied microwave induced metal discharge denitration, this method without catalyst, investment is small, operating cost is low, be one kind
Efficiently, energy-saving and environment-friendly novel fume cleaning technology.
In patent of invention CN00110497.7, the Chinese Academy of Sciences, China Tang Junwang et al. utilizes microwave induced quartz under normal pressure
Reactor electric discharge denitration, electrodeless pollution will not generate solid waste, catalyst poisoning be not present, but denitrification rate can only
Reach 60% or so.In patent of invention CN201510367575.1, Shandong University Wang Wenlong et al. utilizes microwave induced metal
Medium discharge pyrolysis fuel oil, the method do not use catalyst, avoid Catalysts Deactivation Problems, but to improve the energy of metal discharge
Power, for this patent using the strong conductive metal such as Fe, Ni, Cu, this kind of melting point metal is lower, the discharge stability if fusing
It declines to a great extent.
Summary of the invention
The purpose of the present invention is being directed to the deficiency of existing method of denitration, a kind of microwave induced metal discharge progress flue gas is provided
The device and method of denitration.
In order to achieve the above object, the present invention provides the device that a kind of microwave induced metal discharge carries out denitrating flue gas,
It is characterised in that it includes channel-type microwave reactor, the channel-type microwave reactor includes anti-microwave leakage cabinet, magnetron
With anti-microwave leakage net, the anti-microwave leakage cabinet has smoke inlet and exhanst gas outlet；Anti-microwave leakage box house
Setting discharge module and high temperature stent, discharge module are fixed in high temperature stent；Anti-microwave leakage network arrangements are in anti-microwave
The smoke inlet and smoke outlet of cabinet are leaked, the magnetron is arranged outside anti-microwave leakage cabinet.
Preferably, the discharge module is made of refractory metal silk and ceramic body, and refractory metal silk is fixed on ceramics
On body, the both ends of refractory metal silk are oppositely arranged.
It is furthermore preferred that metal of the refractory metal silk by fusing point at 2000 DEG C or more is made.
It is furthermore preferred that the refractory metal silk is made of tungsten, tantalum or niobium, and refractory metal silk diameter 0.01~
Between 2mm.
It is furthermore preferred that the ceramic body includes but is not limited to by Al2O3Or SiO2High-temperature insulation body made of material.
It is furthermore preferred that the both ends of the refractory metal silk are taper, wedge shape or polygonal pyramid shape.
Preferably, the high temperature stent is reticular structure, and discharge module may be detachably retained at high temperature resistant branch
On frame.
Preferably, the high temperature stent is made of iron, steel, copper or other fusing points in 1000 DEG C or more of metal material.
The present invention also provides a kind of methods that microwave induced metal discharge carries out denitrating flue gas, which is characterized in that utilizes
The device that the present invention microwave induced metal discharge above-mentioned carries out denitrating flue gas carries out denitrating flue gas.
Preferably, the specific steps of the denitrating flue gas include: that the flue gas of nitrogen-containing oxide is direct through smoke inlet
It is passed through anti-microwave leakage cabinet, the high-temperature plasma generated with discharge module is had an effect, and nitrogen oxides dissociates, and is turned
Turn to N2And O2, it is discharged from exhanst gas outlet.
For the contradiction for solving discharge stability and metallic conductivity, the present invention is using refractory metal as discharge electrode, by height
Melting point metals and ceramic body form discharge module, and by carrying out structure of modification to metal tip, metal tip are made to form Gao Qu
The structures such as taper, wedge shape or the polygonal pyramid body of rate, solve the contradiction of metal discharge stability and electric conductivity, this method are used for
Denitrating flue gas has the characteristics that high-efficient, investment is small, operating cost is low, without secondary pollution.
Compared with prior art, the beneficial effects of the present invention are:
1, denitrification rate of the present invention is high, removal of nitrogen oxide rapidly, simple process, it is without secondary pollution, without catalyst consumption, answer
It is big with prospect.
2, denitration raw material sources of the present invention are extensive, and manufacturing process and treatment process are all fairly simple.
3, structure of the invention is compact, operating cost is low, does not have secondary pollution.
Detailed description of the invention
Fig. 1 is channel-type microwave reactor schematic diagram.
Fig. 2 is discharge module schematic diagram figure.
Fig. 3 is high temperature stent schematic diagram.
Fig. 4 is four kinds of different types of tip schematic diagrames.
Fig. 5 be in embodiment 1 denitrification rate with microwave power variation diagram.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiment 1
As shown in Figure 1, present embodiments providing a kind of microwave induced metal discharge progress equipment for denitrifying flue gas, including channel
Type micro-wave reactor, the channel-type microwave reactor include the anti-microwave of anti-microwave leakage cabinet 5, magnetron 4 and lower resistance
Net 1 is leaked, the anti-microwave leakage cabinet 5 has smoke inlet 6 and exhanst gas outlet 7；It is arranged inside anti-microwave leakage cabinet 5
Discharge module 2 and high temperature stent 3, discharge module 2 are fixed in high temperature stent 3；Anti-microwave leakage net 1 is arranged in anti-microwave
At the smoke inlet 6 and exhanst gas outlet 7 for leaking cabinet 5, the magnetron 4 is arranged outside anti-microwave leakage cabinet 5.
As shown in Fig. 2, discharge module 2 is made of refractory metal silk 8 and ceramic body 9, wherein refractory metal silk 8 is adopted
Use tungsten wire；Tungsten wire diameter is 0.5mm, and ceramic body material is aluminium oxide；Refractory metal silk 8 is fixed on ceramic body 9, high-melting-point
The both ends of wire 8 are oppositely arranged.
As shown in figure 4, two tips 10 of refractory metal silk 8 may respectively be the conical tip 11 of higher curvature, wedge grip
End 12, triangular pyramid tip 13 or rectangular pyramid tip 14；In the present embodiment, it transform metal tip as wedge shaped tip 13, it is fixed
On ceramic body 9；
As shown in figure 3, high temperature stent 3 is reticular structure.Timbering material is stainless steel, and neighbouring discharge intermodule distance is
5cm, discharge module 2 may be detachably retained in high temperature stent 3.Discharge module 2 in high temperature stent 3 can be flexible
Arrangement can dismantle or install discharge module 2 according to actual requirement.
The method that the microwave induced metal discharge carries out denitrating flue gas, the specific steps are as follows:
(1) simulated flue gas that NO concentration is 200ppm is passed directly into anti-microwave leakage cabinet through smoke inlet；
(2) magnetron 4 is opened, the tip 10 of induction refractory metal silk 8 is discharged, the high temperature etc. that NO and discharge module generate
Gas ions are had an effect, and nitrogen oxides dissociates, and are converted into N2And O2, real-time from exhanst gas outlet discharge flue gas analyzer
The concentration of monitoring NO changes and records.
Fig. 5 show the denitration efficiency under the conditions of different microwave, when power rises to 800W by 300W, denitrification rate by
82.9% rises to 90.5%, and denitrification rate increases with microwave power and increased, and denitration effect is good.
Claims (10)
1. the device that a kind of microwave induced metal discharge carries out denitrating flue gas, which is characterized in that including channel-type microwave reactor,
The channel-type microwave reactor includes anti-microwave leakage cabinet, magnetron and anti-microwave leakage net, the anti-microwave leakage
Cabinet has smoke inlet and exhanst gas outlet；Discharge module and high temperature stent is arranged in anti-microwave leakage box house, and discharge mould
Block is fixed in high temperature stent；Anti-microwave leakage network arrangements anti-microwave leakage cabinet smoke inlet and smoke outlet,
The magnetron is arranged outside anti-microwave leakage cabinet.
2. microwave induced metal discharge carries out the device of denitrating flue gas as described in claim 1, which is characterized in that the electric discharge mould
Block is made of refractory metal silk and ceramic body, and refractory metal silk is fixed on ceramic body, the both ends phase of refractory metal silk
To setting.
3. microwave induced metal discharge carries out the device of denitrating flue gas as claimed in claim 2, which is characterized in that the high-melting-point
Metal of the wire by fusing point at 2000 DEG C or more is made.
4. microwave induced metal discharge carries out the device of denitrating flue gas as claimed in claim 2, which is characterized in that the high-melting-point
Wire is made of tungsten, tantalum or niobium, and refractory metal silk diameter is between 0.01~2mm.
5. microwave induced metal discharge carries out the device of denitrating flue gas as claimed in claim 2, which is characterized in that the ceramic body
For by Al2O3Or SiO2High-temperature insulation body made of material.
6. microwave induced metal discharge carries out the device of denitrating flue gas as claimed in claim 2, which is characterized in that the high-melting-point
The both ends of wire are taper, wedge shape or polygonal pyramid shape.
7. microwave induced metal discharge carries out the device of denitrating flue gas as described in claim 1, which is characterized in that the high temperature resistant
Bracket is reticular structure, and discharge module may be detachably retained in high temperature stent.
8. microwave induced metal discharge carries out the device of denitrating flue gas as described in claim 1, which is characterized in that the high temperature resistant
Bracket is made of iron, steel, copper or other fusing points in 1000 DEG C or more of metal material.
9. a kind of method that microwave induced metal discharge carries out denitrating flue gas, which is characterized in that any using claim 1~8
The device that the item microwave induced metal discharge carries out denitrating flue gas carries out denitrating flue gas.
10. the method that microwave induced metal discharge carries out denitrating flue gas as claimed in claim 9, which is characterized in that the cigarette
The specific steps of qi exhaustion nitre include: that the flue gas of nitrogen-containing oxide is passed directly into anti-microwave leakage cabinet through smoke inlet, and are put
The high-temperature plasma that electric module generates is had an effect, and nitrogen oxides dissociates, and is converted into N2And O2, arranged from exhanst gas outlet
Out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910129020.1A CN109821372A (en) | 2019-02-21 | 2019-02-21 | A kind of microwave induced metal discharge carries out the device and method of denitrating flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910129020.1A CN109821372A (en) | 2019-02-21 | 2019-02-21 | A kind of microwave induced metal discharge carries out the device and method of denitrating flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109821372A true CN109821372A (en) | 2019-05-31 |
Family
ID=66863988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910129020.1A Pending CN109821372A (en) | 2019-02-21 | 2019-02-21 | A kind of microwave induced metal discharge carries out the device and method of denitrating flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109821372A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113941239A (en) * | 2021-11-06 | 2022-01-18 | 云南华谱量子材料有限公司 | Method and device for efficiently purifying harmful tail gas by using microwave plasma |
| CN115196621A (en) * | 2021-09-28 | 2022-10-18 | 云南华谱量子材料有限公司 | Method and device for preparing graphene by catalyst-assisted microwave excitation metal discharge |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1326810A (en) * | 2000-06-07 | 2001-12-19 | 中国科学院大连化学物理研究所 | Normal pressure microwave discharging reactor and appliation in removing nitrogen-oxygen compound thereof |
| CN1330975A (en) * | 2000-06-28 | 2002-01-16 | 中国科学院大连化学物理研究所 | Microwave-discharging catalytic reducing process for removing nitrogen oxide |
| EP1189679A1 (en) * | 1999-04-16 | 2002-03-27 | Swinburne Limited | Ioniser for effluent gas |
| CN1483925A (en) * | 2003-07-28 | 2004-03-24 | 吉林大学 | Multi-micvowave source device for trcating exhausted gas of engine |
| CN104437040A (en) * | 2014-12-16 | 2015-03-25 | 江苏淞瀚新能源有限公司 | Nitric oxide removing device and method based on delectric barrier discharge reactor |
| CN104946281A (en) * | 2015-06-29 | 2015-09-30 | 山东大学 | Device and method for intensifying tar cracking in biomass gasification pyrolysis process |
-
2019
- 2019-02-21 CN CN201910129020.1A patent/CN109821372A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1189679A1 (en) * | 1999-04-16 | 2002-03-27 | Swinburne Limited | Ioniser for effluent gas |
| CN1326810A (en) * | 2000-06-07 | 2001-12-19 | 中国科学院大连化学物理研究所 | Normal pressure microwave discharging reactor and appliation in removing nitrogen-oxygen compound thereof |
| CN1330975A (en) * | 2000-06-28 | 2002-01-16 | 中国科学院大连化学物理研究所 | Microwave-discharging catalytic reducing process for removing nitrogen oxide |
| CN1483925A (en) * | 2003-07-28 | 2004-03-24 | 吉林大学 | Multi-micvowave source device for trcating exhausted gas of engine |
| CN104437040A (en) * | 2014-12-16 | 2015-03-25 | 江苏淞瀚新能源有限公司 | Nitric oxide removing device and method based on delectric barrier discharge reactor |
| CN104946281A (en) * | 2015-06-29 | 2015-09-30 | 山东大学 | Device and method for intensifying tar cracking in biomass gasification pyrolysis process |
Non-Patent Citations (2)
| Title |
|---|
| 中国内燃机学会: "《内燃机科技 2018年世界内燃机大会学术交流论文集 下》", 30 November 2018, 上海：上海大学出版社 * |
| 孙传尧: "《选矿工程师手册 第3册 下 选矿工业实践》", 31 March 2015, 北京：冶金工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115196621A (en) * | 2021-09-28 | 2022-10-18 | 云南华谱量子材料有限公司 | Method and device for preparing graphene by catalyst-assisted microwave excitation metal discharge |
| CN115196621B (en) * | 2021-09-28 | 2023-09-19 | 云南华谱量子材料有限公司 | Method and device for preparing graphene by catalyst-assisted microwave excitation metal discharge |
| CN113941239A (en) * | 2021-11-06 | 2022-01-18 | 云南华谱量子材料有限公司 | Method and device for efficiently purifying harmful tail gas by using microwave plasma |
| CN113941239B (en) * | 2021-11-06 | 2023-10-10 | 云南华谱量子材料有限公司 | Method and device for efficiently purifying harmful tail gas by utilizing microwave plasma |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109821372A (en) | A kind of microwave induced metal discharge carries out the device and method of denitrating flue gas | |
| CN101791561B (en) | Desulphurization and denitration catalyst and preparation method thereof | |
| CN104437040B (en) | Removal of nitrogen oxide device based on dielectric barrier discharge reactor and removal methods thereof | |
| TWI615543B (en) | Energy-saving type dielectric barrier discharge plasma nox reduction device | |
| CN107486253A (en) | A kind of dielectric barrier discharge plasma makes the Ag/Al of inactivation2O3Catalyst original position regeneration method | |
| CN109675436A (en) | A kind of system and method for flue gas pollutant combined desulfurization and denitration | |
| CN110385020A (en) | Spininess coaxial-type electric discharge removal methods and reactor for removal of nitrogen oxide | |
| CN106890564A (en) | The method for the treatment of industrial waste gas integrated apparatus and treatment industrial waste gas based on multi-layer plate-type | |
| CN102548178A (en) | Arc plasma generator | |
| CN107166425A (en) | It is a kind of to mitigate method and its device that air preheater blocks and improves heat utilization rate | |
| CN208115477U (en) | A kind of photoelectrocatalysioxidization oxidization denitration integrated device | |
| CN206549450U (en) | A kind of processing industrial waste gas integrated apparatus based on multi-layer plate-type | |
| CN105859064A (en) | Method for preparing denitration agent by utilizing sludge | |
| CN103752412A (en) | Spike electrode for plasma catalytic reactor, and plasma catalytic reactor comprising same | |
| CN104474889B (en) | A kind of method of catalytic denitration | |
| CN115156259A (en) | Method for directionally removing bromine from waste circuit board by microwave pyrolysis in water vapor atmosphere | |
| CN210448688U (en) | SCR denitrification facility and low temperature plasma device denitration device in coordination | |
| RU2184601C1 (en) | Method of high-pressure gas processing in plasma discharge and plasmochemical reactor for method embodiment | |
| CN204563937U (en) | A kind of low-temperature smoke air SCR denitrating system | |
| CN205361006U (en) | Waste gas treatment device | |
| CN207880892U (en) | A kind of flue gas removing device and electric oven | |
| CN100556510C (en) | A kind of method that from industrial waste gas, reclaims fine silica flour or fine sulphur powder | |
| CN206315627U (en) | A kind of high-frequency induction heating technology exhaust treatment system | |
| CN105617961B (en) | It is a kind of to be shown with temperature and shockproof waste processing plasma reaction furnace apparatus | |
| CN113786798B (en) | Method for preparing flue gas adsorbent by cooperatively treating industrial waste residues by coupling external fields |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190531 |
|
| RJ01 | Rejection of invention patent application after publication |