CN208620389U - Device is fired in a kind of flue gas multiplexing anaerobism burning and secondary oxygenating again - Google Patents
Device is fired in a kind of flue gas multiplexing anaerobism burning and secondary oxygenating again Download PDFInfo
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- CN208620389U CN208620389U CN201821172927.3U CN201821172927U CN208620389U CN 208620389 U CN208620389 U CN 208620389U CN 201821172927 U CN201821172927 U CN 201821172927U CN 208620389 U CN208620389 U CN 208620389U
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- air
- flue gas
- pipeline
- fresh air
- annular passage
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Abstract
A kind of flue gas multiplexing anaerobism burning disclosed by the utility model fires device with secondary oxygenating again, including furnace body, in the furnace body from bottom to top be disposed with air blast chamber, fire grate, combustion chamber and smoke chamber, wrapping around for the furnace body is provided with annular passage, the bottom of annular passage is provided with the blast entrance being connected with the air blast chamber, the secondary air distribution outlet with the combustion chamber is provided at the top of annular passage, the top of the smoke chamber is provided with smoke exhaust pipe along the vertical direction, the side of smoke exhaust pipe is connected with off-gas recovery pipeline by threeway, the annular passage is connected with air blower, the air inlet of air blower is connected with fresh air pipeline, the end of fresh air pipeline is provided with fresh air inlet, fresh air pipeline is connect by threeway with the off-gas recovery pipeline.The utility model is suitable for biomass fuel stove, on the basis of method is simple, practical, can largely reduce the content of NO in flue gas, improve air quality.
Description
Technical field
The utility model relates to boiler technology fields more particularly to a kind of multiplexing anaerobism burning of flue gas to fire again with secondary oxygenating
Device.
Background technique
The various boilers or stove that fuel is done with biomass, be discharged into the flue gas in atmosphere usually contain it is more or less
NO and NO2 ingredient, this can pollute atmosphere, with the raising of people's lives level, to flue gas pollutant content standard
It is required that higher and higher, the existing method for reducing NO are as follows: ammonia spirit or urea liquid reduction method are sprayed by fire box, that is, exist
Under the automatic Detection & Controling of computer, ammonia spirit is quantitatively sprayed into the burner hearth to burn, ammonia spirit vapour at high temperature
Change and reduction reaction occurs with NO and is generally used in large-sized boiler, still at present because of the strict demand of standard limit of smog release
This technical application is at high cost on microminiature stove, very uneconomical.
Utility model content
The purpose of this utility model is that in place of avoiding the deficiencies in the prior art, provide a kind of flue gas multiplexing anaerobism burning with
Device is fired in secondary oxygenating again, to effectively solve the shortcomings of the prior art.
To achieve the above object, the technical solution that the utility model is taken are as follows: a kind of multiplexing anaerobism burning of flue gas with it is secondary
Device, including furnace body are fired in oxygenating again, in the furnace body from bottom to top be disposed with air blast chamber, fire grate, combustion chamber and cigarette
Chamber, wrapping around for the furnace body are provided with annular passage, and the bottom of annular passage, which is provided with, to be connected with the air blast chamber
Blast entrance is provided with the secondary air distribution outlet with the combustion chamber, the top edge of the smoke chamber at the top of annular passage
Vertical direction is provided with smoke exhaust pipe, and the side of smoke exhaust pipe is connected with off-gas recovery pipeline, the annular passage connection by threeway
There is air blower, the air inlet of air blower is connected with fresh air pipeline, and the end of fresh air pipeline is provided with fresh air inlet, and fresh air pipeline is logical
Threeway is crossed to connect with the off-gas recovery pipeline.
Further, the secondary air distribution outlet is circumferentially evenly provided with multiple.
Further, the secondary air distribution outlet tilts upwards from outside to inside.
Further, air volume regulating valve is provided on the off-gas recovery pipeline and fresh air pipeline.
Further, the off-gas recovery pipeline include the horizontal tube being connected with the smoke exhaust pipe and with the fresh air pipeline
Connected vertical pipe；
The top of the vertical pipe and the top of annular passage are connected by by-pass line；
The joint of the by-pass line and vertical pipe is provided with can be closed by by-pass line or vertical pipe respectively
Baffle.
Further, the baffle is hinged on the joint of the by-pass line and vertical pipe by shaft；
The shaft is connected with adjusting handle.
The above-mentioned technical proposal of the utility model has the advantages that the utility model is suitable for biomass fuel furnace
Tool can largely reduce the content of NO in flue gas on the basis of method is simple, practical, improve air quality.
Detailed description of the invention
Fig. 1 is the utility model embodiment structural schematic diagram；
Fig. 2 is second of example structure schematic diagram of the utility model；
Fig. 3 is the partial enlarged view in Fig. 2 at A.
Specific embodiment
The embodiments of the present invention is described in further detail with reference to the accompanying drawings and examples.Following embodiment
For illustrating the utility model, but cannot be used to limit the scope of the utility model.
In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term
The orientation of the instructions such as "upper", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " or position are closed
System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than
The device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot
It is construed as a limitation of the present invention.In the description of the present invention, it should be noted that unless otherwise specific regulation
And restriction, term " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
As shown in Figure 1, device, including furnace are fired in a kind of flue gas multiplexing anaerobism burning and secondary oxygenating described in the present embodiment again
Body 1, in furnace body 1 from bottom to top be disposed with air blast chamber 2, fire grate 3, combustion chamber 4 and smoke chamber 5, furnace body 1 wraps around
It is provided with annular passage 6, the bottom of annular passage 6 is provided with the blast entrance 7 being connected with air blast chamber 2, the top of annular passage 6
Portion is provided with the secondary air distribution outlet 8 being connected with combustion chamber 4, and the top of smoke chamber 5 is provided with smoke exhaust pipe 9 along the vertical direction, smoke evacuation
The side of pipe 9 is connected with off-gas recovery pipeline 10 by threeway, and annular passage 6 is connected with air blower 11, the air inlet of air blower 11
Mouth is connected with fresh air pipeline 12, and the end of fresh air pipeline 12 is provided with fresh air inlet 12a, and fresh air pipeline 12 passes through threeway and flue gas
Recovery channel 10 connects.
The working principle of the utility model are as follows: fuel (biomass block, particle etc.) in combustion chamber 4 with come from fire grate 3
The air blast collective effect of lower section is burnt, and is primary combustion, is generated a large amount of thermal energy and high-temperature flue gas, wherein flue gas contains one
Quantitative NO gas, since primary combustion here is for hypoxgia, substantially " imperfect combustion " of biomass fuel,
There are also a large amount of imflammable gas in the high-temperature flue gas of generation, wherein just have the hydrocarbon component that can restore NO, H2 and CO gas,
NO is reduced into N2 gas in the process, with the uplink of high-temperature flue gas in combustion chamber 4, can obtain the two of secondary air distribution outlet 8
Secondary oxygenating, the originally fuel gas in high-temperature flue gas are burnt under high temperature environment, are " firing again " process, in the flue gas of discharge
A part of is directly directly emitted by smoke exhaust pipe 9, the larger fuel gas of another part specific gravity due to air blower by being generated
Negative pressure is recycled by off-gas recovery pipeline 10 and is entered in fresh air channel 12, enters annular passage 6 together with extraneous fresh air
In supplied, ensure that the full combustion of fuel gas, and be mingled with from the flue gas that off-gas recovery pipeline 10 recycles a large amount of
Heat mixed with fresh air, ensure that the temperature of supply gas, improve the effect of burning, save resource.
Secondary air distribution outlet 8 be circumferentially evenly provided with it is multiple, guarantee oxygen supply uniformly, sufficiently.
Secondary air distribution outlet 8 from outside to inside upwards inclination, in this way from secondary air distribution outlet 8 come out gas and combustion chamber 4 on
The angle between air-flow risen is acute angle, conducive to being sufficiently mixed for gas, prays combustion-supporting effect.
Air volume regulating valve 13 is provided on off-gas recovery pipeline 10 and fresh air pipeline 12.
As shown in Fig. 2, off-gas recovery pipeline 10 includes the horizontal tube 10a being connected with smoke exhaust pipe 9 in second of embodiment
And the vertical pipe 10b being connected with fresh air pipeline 12；The top of vertical pipe 10b and the top of annular passage 6 pass through by-pass line
14 connections；The joint of by-pass line 14 and vertical pipe 10b, which are provided with, respectively to be sealed by-pass line 14 or vertical pipe 10b
The baffle 15 closed, baffle 15 are hinged on the joint of by-pass line 14 Yu vertical pipe 10b by shaft 16, and shaft 16 is connected with tune
Handwheel is saved, adjusting handle is located at outside.
It is provided with by-pass line 14, by-pass line 14 or off-gas recovery pipeline can be realized by the overturning of baffle 15
10 closing, when by-pass line 14 close when, working principle with the first be in example it is identical, when off-gas recovery pipeline 10
When closing, the flue gas of recycling individually enters the top of annular passage 6, and fresh air is also individually to enter annular wind
The bottom in road 6 can conveniently control the concentration of the recovered flue gas entered in secondary air distribution outlet 8, flexible and convenient to use.
The embodiments of the present invention are given for the purpose of illustration and description, and are not exhaustively or to incite somebody to action
The utility model is limited to disclosed form.Many modifications and variations are aobvious and easy for the ordinary skill in the art
See.Embodiment was chosen and described in order to better illustrate the principle and practical application of the utility model, and makes this field
Those of ordinary skill it will be appreciated that the utility model to designing various embodiments suitable for specific applications with various modifications.
Claims (6)
1. device, including furnace body are fired in a kind of multiplexing anaerobism burning of flue gas and secondary oxygenating again, in the furnace body from bottom to top according to
It is secondary to be provided with air blast chamber, fire grate, combustion chamber and smoke chamber, it is characterised in that: wrapping around for the furnace body is provided with annular wind
Road, the bottom of annular passage are provided with the blast entrance being connected with the air blast chamber, are provided at the top of annular passage and institute
The secondary air distribution outlet of combustion chamber is stated, the top of the smoke chamber is provided with smoke exhaust pipe, the side of smoke exhaust pipe along the vertical direction
It is connected with off-gas recovery pipeline by threeway, the annular passage is connected with air blower, and the air inlet of air blower is connected with fresh air
Pipeline, the end of fresh air pipeline are provided with fresh air inlet, and fresh air pipeline is connect by threeway with the off-gas recovery pipeline.
2. a kind of flue gas multiplexing anaerobism burning according to claim 1 fires device with secondary oxygenating again, it is characterised in that: institute
State secondary air distribution outlet be circumferentially evenly provided with it is multiple.
3. a kind of flue gas multiplexing anaerobism burning according to claim 2 fires device with secondary oxygenating again, it is characterised in that: institute
Secondary air distribution outlet is stated to tilt upwards from outside to inside.
4. a kind of flue gas multiplexing anaerobism burning according to claim 1 fires device with secondary oxygenating again, it is characterised in that: institute
It states and is provided with air volume regulating valve on off-gas recovery pipeline and fresh air pipeline.
5. a kind of flue gas multiplexing anaerobism burning according to claim 1 fires device with secondary oxygenating again, it is characterised in that: institute
State the vertical pipe that off-gas recovery pipeline includes the horizontal tube being connected with the smoke exhaust pipe and is connected with the fresh air pipeline；
The top of the vertical pipe and the top of annular passage are connected by by-pass line；
The joint of the by-pass line and vertical pipe is provided with can be respectively by by-pass line or the closed baffle of vertical pipe.
6. a kind of flue gas multiplexing anaerobism burning according to claim 5 fires device with secondary oxygenating again, it is characterised in that: institute
State the joint that baffle is hinged on the by-pass line and vertical pipe by shaft；
The shaft is connected with adjusting handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821172927.3U CN208620389U (en) | 2018-07-20 | 2018-07-20 | Device is fired in a kind of flue gas multiplexing anaerobism burning and secondary oxygenating again |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821172927.3U CN208620389U (en) | 2018-07-20 | 2018-07-20 | Device is fired in a kind of flue gas multiplexing anaerobism burning and secondary oxygenating again |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208620389U true CN208620389U (en) | 2019-03-19 |
Family
ID=65707010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821172927.3U Expired - Fee Related CN208620389U (en) | 2018-07-20 | 2018-07-20 | Device is fired in a kind of flue gas multiplexing anaerobism burning and secondary oxygenating again |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208620389U (en) |
-
2018
- 2018-07-20 CN CN201821172927.3U patent/CN208620389U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190319 Termination date: 20190720 |