CN108895443B - A kind of catalysis low nitrogen burning bell-type device and technique - Google Patents
A kind of catalysis low nitrogen burning bell-type device and technique Download PDFInfo
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- CN108895443B CN108895443B CN201810585372.3A CN201810585372A CN108895443B CN 108895443 B CN108895443 B CN 108895443B CN 201810585372 A CN201810585372 A CN 201810585372A CN 108895443 B CN108895443 B CN 108895443B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C13/00—Apparatus in which combustion takes place in the presence of catalytic material
- F23C13/08—Apparatus in which combustion takes place in the presence of catalytic material characterised by the catalytic material
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Abstract
The present invention relates to a kind of catalysis low nitrogen burning bell-type devices, belong to low-NO_x combustion technology field.Described device includes combustion catalysis cover and connector, and combustion catalysis cover is mounted on burner nozzle by connector, is used cooperatively with burner, forms low nitrogen burning system；The combustion catalysis cover is made of catalyst carrier and catalyst, wherein the catalyst carrier is as main body framework, and the catalyst distribution is in main body framework, and the catalyst carrier is by that can be catalyzed CO and NOxThe heat-resisting material of reaction is made, and main body framework itself is made to also serve as catalyst；The shape of the combustion catalysis cover is flamboyancy, coniform and petal-shaped.The CO catalysis that the device of the invention can use the imperfect combustion generation of fuel restores the NO generated in combustion processx, make CO and NOxIt is converted into CO2And N2, first is that the completely burned of fuel is promoted, it is energy saving；Two are a further reduction the NO that burning generatesxContent, effective emission reduction reach the double effects for having both energy conservation, emission reduction.
Description
Technical field
The invention belongs to low-NO_x combustion technology field more particularly to a kind of catalysis low nitrogen burning bell-type device and techniques.
Background technique
China's atmosphere polluting problem is got worse, and country is increasingly stringenter the control of pollutant emission.For nitrogen oxidation
The emission control of object, the current nitrogen oxygen there are many method, after the low-NO_x combustion technology being broadly divided into combustion process, and burning
Compound removing sulfuldioxide.For the low-NO_x combustion technology of current main-stream, reducing ignition temperature is that control nitrogen oxides generates
One of important means, but the reduction of temperature will affect the combustion position of fuel, its burnout rate is made to be affected.In face of increasingly tighter
Severe emission limit further develops new and effective low-NO_x combustion technology, reduces the amount of nitrogen oxides in combustion product gases, together
When can guarantee the completely burned of fuel, be the key that realize good energy-saving and emission-reduction.Therefore, how to alleviate low nitrogen burning compared with
Under low temperature, it is a particularly significant problem that control, which lowers discharged nitrous oxides and promotes contradiction between fuel completely burned,.
Therefore, it is necessary to study a kind of devices that can be achieved at the same time control and lower discharged nitrous oxides and promotion fuel completely burned.
Summary of the invention
For above-mentioned problems of the prior art, the present invention is intended to provide one kind, which has catalyzed conversion, reduces NOxRow
The low nitrogen burning bell-type device and technique of effect are put, the imperfect combustion production of fuel can be utilized during fuel combustion
The NO generated in raw CO catalysis reduction combustion processx, make CO and NOxIt is converted into CO2And N2, on the one hand promote the complete of fuel
Full burning, it is energy saving；On the other hand it further reduced the NO that burning generatesxContent, effective emission reduction, therefore, the present invention mentions
The technique and device of confession have the double effects of energy conservation, emission reduction simultaneously.
An object of the present invention is to provide a kind of catalysis low nitrogen burning bell-type device.
The second object of the present invention is to provide a kind of depth low nitrogen burning technique based on catalysis low nitrogen burning bell-type device.
The third object of the present invention, which is to provide catalysis low nitrogen burning bell-type device and carries out the low nitrogen of depth using the device, fires
The application of firing technique.
For achieving the above object, the invention discloses following technical proposals:
Firstly, the invention discloses a kind of catalysis low nitrogen burning bell-type device, including combustion catalysis cover and connector, burning
Catalysis cover is mounted on burner nozzle by connector, is used cooperatively with burner, and low nitrogen burning system is formed.
The combustion catalysis cover is made of catalyst carrier and catalyst, wherein the catalyst carrier is as main body bone
Frame, in main body framework, the catalyst carrier is made the catalyst distribution of heat-resisting material, preferably metal material or
Ceramic material；Preferably, the catalyst includes Fe&Cu composite catalyst etc..
The catalyst carrier can also be by that can be catalyzed CO and NOxThe heat-resisting material of reaction is made, such catalyst
Carrier itself can also also serve as catalyst, it is preferred that the catalyst carrier is by iron copper manganese stainless steel alloy, Fe/Cu/Zn/Ce/
Ti high-entropy alloy or Fe&Cu load carbon nano material etc. are made.
The shape of the combustion catalysis cover is flamboyancy, coniform or petal-shaped, lantern-shaped etc., preferably flamboyancy, this
Sample can cooperate with combustion flame, by the temperature that combustion flame generates, provide good operational temperature conditions for catalyst,
Reach energy-efficient purpose.
Combustion catalysis cover is connected to burner flame outlet by the connector, and welding, flanged joint, screw thread company can be used
It connects, preferably flanged joint and threaded connection.
Angle α when the shape of combustion catalysis cover is coniform, between combustion catalysis cover and connector are as follows: 0 ° < α <
180°。
Secondly, the invention discloses a kind of depth low nitrogen burning techniques based on catalysis low nitrogen burning bell-type device, comprising:
Step 1: combustion catalysis cover is mounted on burner nozzle by connector, adjust combustion catalysis cover and connector it
Between angle α, guarantee that the temperature of bell-type device present position is consistent with the required optimum temperature of catalysis reaction, fuel is in temperature
It burns in low NO lower than 1000 DEG C；Since ignition temperature is low, although the NO generatedxIt reduces, but since burning is not filled
Point, have certain C O generation；
Step 2: the NO generated in step 1xIt is diffused into combustion catalysis cover with CO by burner nozzle, in catalyst
Under the action of, CO and NOxCatalysis reaction, NO occursxN is catalysed and reduced by CO2, CO passes through NOxFurther develop and generates CO2It releases
Heat, so that fuel obtains further completely burned.
Finally, carrying out depth low nitrogen burning the invention discloses above-mentioned catalysis low nitrogen burning bell-type device and using the device
Technique gas, liquid fuel low nitrogen burning field in application.
The invention has the characteristics that the temperature of low nitrogen burning is generally at 1000 DEG C or so, but at this temperature due to burning
It is insufficient, a part of CO is produced, therefore, the present invention is using in the CO catalysis reduction combustion process of the imperfect combustion generation of fuel
The NO of generationx, make CO and NOxIt is converted into CO2And N2, however, the temperature in burner is excessively high, CO and NO can not be carried outxCatalysis
Reaction, temperature is too low can not also to carry out CO and NOxCatalysis reaction, this just need find and manufacture one is suitble to above-mentioned catalysis anti-
The environment answered is found by research: having potentially the ring that can satisfy above-mentioned catalysis reaction at the flame jet of burner
Border, but the Temperature Distribution feature of flame not being that all environment at the flame jet of burner can satisfy above-mentioned urge again
Change reaction, because the Temperature Distribution of flame is not consistent from inside to outside, and its suitable catalytic temperature after catalyst is selected
Be exactly it is certain, in order to solve this problem, the characteristics of present invention devises low nitrogen burning bell-type device, this bell-type device, is
Its shape is similar with flame, and bell-type device can thus be made to be in the position for being most suitable for catalysis reaction in flame always, because
After having selected a certain catalyst, it is necessary to the position for being most suitable for reaction in flame is determined by measuring, then by bell-type
Device is placed in flame, adjusts the angle α between combustion catalysis cover and connector, is in bell-type device and is most suitable for catalysis reaction
Position, since the shape of bell-type device is similar with flame, make to function simultaneously as catalyst to remain at bell-type device suitable
It closes in the temperature environment for carrying out catalysis reaction, as CO and NOxAfter being discharged in burner, it is necessary to pass through the bell-type device, so
It is then exhausted from after adequately being reacted under the suitable catalytic environment that flame provides afterwards, CO and NO can either be greatly loweredx
Discharge, and the flame of burner nozzle can be made full use of, it is energy saving.In addition, may be used also due to the presence of bell-type device
To play the role of surely firing, when the combustion gas in burner is unstable to be caused to burn interrupted, due to the high temperature of bell-type device offer
Environment can avoid the generation of flameout well, play the role of surely firing well.
Compared with prior art, the present invention achieves following the utility model has the advantages that catalysis low nitrogen burning bell-type device of the invention
And work can be imperfect combustion using fuel during fuel combustion using the depth low nitrogen burning technique that the device carries out
The NO generated in the CO catalysis reduction combustion process of generationx, make CO and NOxIt is converted into CO2And N2, on the one hand promote fuel
Completely burned, it is energy saving；On the other hand it further reduced the NO that burning generatesxContent, effective emission reduction are provided by the invention
Technique and device have the double effects of energy conservation, emission reduction simultaneously.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is the structural schematic diagram of present invention cone catalysis low nitrogen burning bell-type device.
Fig. 2 is the top view of bell-type device in Fig. 1.
Fig. 3 is the structural schematic diagram that flamboyancy of the present invention is catalyzed low nitrogen burning bell-type device.
Fig. 4 is the top view of bell-type device in Fig. 3.
Fig. 5 is the structural schematic diagram that petal-shaped of the present invention is catalyzed low nitrogen burning bell-type device.
Fig. 6 is the top view of bell-type device in Fig. 5.
Appended drawing reference respectively represents: 1- catalyst carrier, 2- connector；α is between combustion catalysis cover 1 and connector 2
Angle.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As described in background, how to alleviate under the lower temperature of low nitrogen burning, discharged nitrous oxides are lowered in control
And promoting contradiction between fuel completely burned is a particularly significant problem；Therefore, the present invention proposes that one kind has catalysis and turns
Changing reduces NOxThe low nitrogen burning bell-type device and technique of discharge effect；Now in conjunction with the drawings and specific embodiments to the present invention into
Row further illustrates.
Embodiment 1
1, a kind of catalysis low nitrogen burning bell-type device, as shown in Figs. 1-2, including combustion catalysis cover and connector 2, burning is urged
Change cover to be mounted on burner nozzle by connector 2, be used cooperatively with burner, forms low nitrogen burning system.
The combustion catalysis cover is made of catalyst carrier 1 and catalyst, wherein the catalyst carrier 1 is used as main body
Skeleton, in main body framework, the catalyst carrier is made of ceramic materials the catalyst distribution.
The shape of the combustion catalysis cover be it is coniform, can thus cooperate with combustion flame, be produced by combustion flame
Raw temperature provides good operational temperature conditions for catalyst, reaches energy-efficient purpose.
The connector 2 is to be threadedly coupled, so that combustion catalysis cover 1 is connected to burner flame outlet, combustion catalysis
Angle α between cover 1 and connector 2 is 70 °.
2, a kind of depth low nitrogen burning technique of the catalysis low nitrogen burning bell-type device based on the present embodiment, comprising:
Step 1: combustion catalysis cover is mounted on burner nozzle, the low nitrogen that fuel is 980 DEG C in temperature by connector 2
It burns in burner；Since ignition temperature is low, the NO of generationxIt can reduce, but insufficient due to burning, have certain C O generation；
Step 2: the NO generated in step 1xIt is diffused into combustion catalysis cover, is being distributed in by burner nozzle with CO
Under the action of Fe&Cu composite catalyst in the main body framework being made of ceramic materials, CO and NOxCatalysis reaction, NO occursxQuilt
CO is catalysed and reduced into N2, CO passes through NOxFurther develop and generates CO2Heat is released, so that fuel obtains further completely burned.
Embodiment 2
1, a kind of catalysis low nitrogen burning bell-type device, as shown in Figs. 1-2, including combustion catalysis cover and connector 2, burning is urged
Change cover to be mounted on burner nozzle by connector 2, be used cooperatively with burner, forms low nitrogen burning system.
The combustion catalysis cover is made of catalyst carrier 1 and catalyst, wherein the catalyst carrier 1 is used as main body
Skeleton, the catalyst carrier is by that can be catalyzed CO and NOxThe heat-resisting material iron copper manganese stainless steel alloy of reaction is made, in this way
Main body framework itself can also also serve as catalyst.
The shape of the combustion catalysis cover be it is coniform, can thus cooperate with combustion flame, be produced by combustion flame
Raw temperature provides good operational temperature conditions for catalyst, reaches energy-efficient purpose.
The connector 2 is flanged joint, so that combustion catalysis cover 1 is connected to burner flame outlet, combustion catalysis
Angle α between cover 1 and connector 2 is 10 °.
2, a kind of depth low nitrogen burning technique of the catalysis low nitrogen burning bell-type device based on the present embodiment, comprising:
Step 1: combustion catalysis cover being mounted on burner nozzle by connector 2, fuel is low lower than 900 DEG C in temperature
It burns in nitrogen burner；Since ignition temperature is low, the NO of generationxIt can reduce, but insufficient due to burning, it is raw to have certain C O
At；
Step 2: the NO generated in step 1xIt is diffused into combustion catalysis cover with CO by burner nozzle, is urged having
Under the action of the iron cupromanganese main body framework of change effect, CO and NOxCatalysis reaction, NO occursxN is catalysed and reduced by CO2, CO
Pass through NOxFurther develop and generates CO2Heat is released, so that fuel obtains further completely burned.
Embodiment 3
1, a kind of catalysis low nitrogen burning bell-type device, as shown in Figure 3-4, including combustion catalysis cover and connector 2, burning is urged
Change cover to be mounted on burner nozzle by connector 2, be used cooperatively with burner, forms low nitrogen burning system.
The combustion catalysis cover is made of catalyst carrier 1 and catalyst, wherein the catalyst carrier 1 is used as main body
Skeleton, the catalyst carrier is by that can be catalyzed CO and NOxThe high temperature resistant Fe/Cu/Zn/Ce/Ti high-entropy alloy of reaction forms system
At such main body framework itself can also also serve as catalyst.
The shape of the combustion catalysis cover is flamboyancy, can thus cooperate with combustion flame, produce by combustion flame
Raw temperature provides good operational temperature conditions for catalyst, reaches energy-efficient purpose.
The connector 2 is to be welded to connect, so that combustion catalysis cover 1 is connected to burner flame outlet, combustion catalysis
Angle α between cover 1 and connector 2 is 100 °.
2, a kind of depth low nitrogen burning technique of the catalysis low nitrogen burning bell-type device based on the present embodiment, comprising:
Step 1: combustion catalysis cover being mounted on burner nozzle by connector 2, fuel is low lower than 950 DEG C in temperature
It burns in nitrogen burner；Since ignition temperature is low, the NO of generationxIt can reduce, but insufficient due to burning, it is raw to have certain C O
At；
Step 2: the NO generated in step 1xIt is diffused into combustion catalysis cover with CO by burner nozzle, is urged having
Under the action of the main body framework Fe/Cu/Zn/Ce/Ti catalyst of change effect, CO and NOxCatalysis reaction, NO occursxIt is catalyzed by CO
It is reduced into N2, CO passes through NOxFurther develop and generates CO2Heat is released, so that fuel obtains further completely burned.
Embodiment 4
1, a kind of catalysis low nitrogen burning bell-type device, as seen in figs. 5-6, including combustion catalysis cover and connector 2, burning is urged
Change cover to be mounted on burner nozzle by connector 2, be used cooperatively with burner, forms low nitrogen burning system.
The combustion catalysis cover is made of catalyst carrier 1 and catalyst, wherein the catalyst carrier 1 is used as main body
Skeleton, the catalyst are the Fe&Cu composite material being distributed in main body framework, and the catalyst carrier is by that can be catalyzed CO
And NOxThe heat-resisting material Fe&Cu load carbon nano material molding of reaction is made, and such main body framework itself can also be also served as and be urged
Agent.
The shape of the combustion catalysis cover is petal-shaped, can thus cooperate with combustion flame, produce by combustion flame
Raw temperature provides good operational temperature conditions for catalyst, reaches energy-efficient purpose.
The connector 2 is to be threadedly coupled, so that combustion catalysis cover 1 is connected to burner flame outlet, combustion catalysis
Angle α between cover 1 and connector 2 is 170 °.
2, a kind of depth low nitrogen burning technique of the catalysis low nitrogen burning bell-type device based on the present embodiment, comprising:
Step 1: combustion catalysis cover being mounted on burner nozzle by connector 2, fuel is low lower than 880 DEG C in temperature
It burns in nitrogen burner；Since ignition temperature is low, the NO of generationxIt can reduce, but insufficient due to burning, it is raw to have certain C O
At；
Step 2: the NO generated in step 1xIt is diffused into combustion catalysis cover with CO by burner nozzle, is urged having
The Fe&Cu composite material that the catalyst Fe of the main body framework of change effect loads carbon nano material and is distributed in main body framework
Under the action of being for catalyst, CO and NOxCatalysis reaction, NO occursxN is catalysed and reduced by CO2, CO passes through NOxFurther drill
Metaplasia is at CO2Heat is released, so that fuel obtains further completely burned.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for those skilled in the art
For member, various changes and changes are possible in this application.Within the spirit and principles of this application, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (7)
1. a kind of catalysis low nitrogen burning bell-type device, it is characterised in that: described device includes combustion catalysis cover and connector, burning
Catalysis cover is mounted on burner nozzle by connector, is used cooperatively with burner, and low nitrogen burning system is formed；
The combustion catalysis cover is made of catalyst carrier and catalyst, wherein the catalyst carrier is as main body framework, institute
Catalyst distribution is stated in main body framework, the catalyst carrier is by that can be catalyzed CO and NOxThe heat-resisting material of reaction is made,
Main body framework itself is set to also serve as catalyst；
The shape of the combustion catalysis cover is flamboyancy, coniform or petal-shaped；
Combustion catalysis cover is connected to burner flame outlet by the connector, using welding, flanged joint or threaded connection.
2. catalysis low nitrogen burning bell-type device as described in claim 1, it is characterised in that:
The catalyst includes Fe&Cu composite material.
3. catalysis low nitrogen burning bell-type device as described in claim 1, it is characterised in that: the catalyst carrier is by iron copper manganese
Stainless steel alloy, Fe/Cu/Zn/Ce/Ti high-entropy alloy or Fe&Cu load carbon nano material are made.
4. catalysis low nitrogen burning bell-type device as described in claim 1, it is characterised in that: the catalyst carrier is by ceramic material
Material is made.
5. catalysis low nitrogen burning bell-type device as described in claim 1, it is characterised in that: the shape of the combustion catalysis cover is
Flamboyancy.
6. catalysis low nitrogen burning bell-type device as described in claim 1, it is characterised in that: when the shape of combustion catalysis cover is circle
Angle α when cone cell, between combustion catalysis cover and connector are as follows: 0 ° < α < 180 °.
7. catalysis low nitrogen burning bell-type device as claimed in any one of claims 1 to 6 is in gas, the low nitrogen burning of liquid fuel
Application in field.
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| CN201810585372.3A CN108895443B (en) | 2018-06-08 | 2018-06-08 | A kind of catalysis low nitrogen burning bell-type device and technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810585372.3A CN108895443B (en) | 2018-06-08 | 2018-06-08 | A kind of catalysis low nitrogen burning bell-type device and technique |
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| CN108895443A CN108895443A (en) | 2018-11-27 |
| CN108895443B true CN108895443B (en) | 2019-10-25 |
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2018
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Patent Citations (6)
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|---|---|---|---|---|
| CN101046304A (en) * | 2006-03-27 | 2007-10-03 | 窦陆军 | Catalyzed coal powder burning process, coal powder catalyzing burner and coal powder burning catalyst |
| WO2011009932A1 (en) * | 2009-07-24 | 2011-01-27 | Catalysair | Method for combusting, in a heating body, a mixture of a fuel and a primary gaseous comburent with a secondary gas flow, and apparatus for feeding the secondary current |
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| RU2540198C1 (en) * | 2013-12-26 | 2015-02-10 | Открытое акционерное общество "Научно-производственное объединение "СПЛАВ" | Independent catalytic heater |
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| CN108895443A (en) | 2018-11-27 |
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