CN210861071U - Novel cyclone burner suitable for direct mixing of biomass and pulverized coal - Google Patents
Novel cyclone burner suitable for direct mixing of biomass and pulverized coal Download PDFInfo
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- CN210861071U CN210861071U CN201921868717.2U CN201921868717U CN210861071U CN 210861071 U CN210861071 U CN 210861071U CN 201921868717 U CN201921868717 U CN 201921868717U CN 210861071 U CN210861071 U CN 210861071U
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Abstract
The utility model discloses a novel cyclone burner suitable for living beings directly mix with buggy belongs to combustion apparatus technical field, is proposed to the poor current situation of current co-combustion effect, and it includes: the biomass pipeline, the one end of biomass pipeline is the spout end, the other end is the feed end with biomass transportation pipeline intercommunication, the periphery at biomass pipeline is equipped with the once-through air passageway of concentric setting from inside to outside in proper order the cover, the overgrate air passageway, tertiary air passageway and quartic wind passageway, once the wind passageway, the overgrate air passageway, the spout end of tertiary air passageway and quartic wind passageway sets up with biomass pipeline's spout end syntropy, install the steady burning tooth on the spout end inner wall of once the wind passageway, the other end of once the wind passageway is the confession coal end that links to each other with buggy transportation pipeline, the spout end of quartic wind passageway is the toper spout, the overgrate air passageway, the other end of tertiary air passageway and quartic wind passageway all communicates with bellows. The utility model discloses compact structure, mixed combustion are effectual.
Description
The technical field is as follows:
the utility model belongs to the technical field of combustion apparatus, concretely relates to novel cyclone burner suitable for living beings directly mix with buggy.
Background art:
biomass energy is the only renewable energy source that can be stored without increasing atmospheric CO during growth and combustion2The sulfur content is very low, and is only 0.1 percent, so the sulfur-containing fuel is a renewable energy source which is very suitable for industrial and large-scale utilization. The biomass power generation is realized by changing the original disordered burning of the agricultural and forestry wastes into centralized burning and power generation, thereby not only saving a large amount of coal resources, but also increasing the income of farmers, and having great significance for optimizing the energy structure in China.
The mass fractions of potassium and chlorine in the biomass fuel are high, serious slag bonding and corrosion can be caused by direct combustion, and the problem can be solved by co-combustion of the biomass and the pulverized coal. The operation of blending and burning biomass on the existing large-capacity coal-fired unit is much lower than that of a newly-built pure biomass-burning power plant, and simultaneously, the fuel cost of the power plant can be reduced by burning biomass fuel with relatively low price, so that the economic benefit of the power plant is improved; the large-scale mixed combustion of biomass can also promote the development of rural economy around power plants.
At present, the biomass and pulverized coal mixed combustion technology applied to the engineering in China is to open an upper opening of a boiler body and spray biomass fuel into a hearth for combustion, and the fuel mixed combustion effect is poor and the modification cost is relatively high. Therefore, it is urgently needed to develop a novel combustion device suitable for efficient clean utilization of biomass direct-mixing so as to simplify a system for biomass direct-mixing combustion and efficient clean utilization thereof and reduce the modification cost.
The invention content is as follows:
the utility model overcomes above-mentioned defect provides a novel cyclone burner who is applicable to living beings and buggy directly mix, and it has the fuel and mixes fully, and the ability of catching fire is strong, the burning is stable, pollutant discharge low grade advantage.
The utility model discloses a technical scheme lie in: a novel cyclone burner suitable for direct mixing of biomass and pulverized coal comprises: the biomass pipeline, the one end of biomass pipeline is the spout end, and the other end is the feed end with biomass pipeline intercommunication, and the periphery at biomass pipeline is equipped with the once-through air passageway, overgrate air passageway, tertiary air passageway and the quartic wind passageway that set up with one heart in proper order from inside to outside cover, the spout end syntropy setting of the spout end of once-through air passageway, overgrate air passageway, tertiary air passageway and quartic wind passageway and biomass pipeline, at the spout end inner wall mounting of once-through air passageway to the bellied steady burning tooth of centre of a circle direction, the other end of once-through air passageway is the coal supply end that links to each other with buggy pipeline, and the spout end of quartic wind passageway is the toper spout, the other end of overgrate air passageway, tertiary air passageway and quartic wind passageway all communicates with bellows, bellows are installed in the periphery of once-through air.
Preferably, the combustion stabilizing teeth are formed by more than two convex teeth which extend towards the direction of the circle center in an annular array mode.
Preferably, the secondary air channel, the tertiary air channel and the quaternary air channel are connected with the air box in a welding mode, a flange connection mode or an integral casting mode.
Preferably, the feeding end of the biomass pipeline is a straight section, and the coal feeding end of the primary air channel is a bent section.
Preferably, the feeding end of the biomass pipeline is a bent section, and the coal feeding end of the primary air channel is a straight section.
Preferably, the feeding end of the biomass pipeline and the coal feeding end of the primary air channel are both straight sections.
Preferably, the feeding end of the biomass pipeline and the coal feeding end of the primary air channel are both bent sections.
The utility model has the advantages that:
1. the biomass channel is arranged in the primary air channel, the biomass airflow conveyed through the biomass channel is sprayed into the hearth in the middle of the pulverized coal airflow, so that the biomass and pulverized coal fuels are fully mixed, and the ignition point of the biomass is far lower than the ignition point of the pulverized coal by about 150 ℃, so that the ignition capacity of the mixed fuel can be greatly improved; because the heat value of the biomass is far lower than that of the pulverized coal, the combustion temperature of the mixed fuel can be greatly reduced, and the Nitrogen Oxide (NO) is inhibitedX) And the generation of pollutants has good effect. Therefore, the arrangement of the biomass fuel in the middle of the burner is very advantageous for fuel combustion and pollutant emission.
2. The utility model discloses an install the steady tooth that fires in the nozzle end of a wind passageway, form the backward flow district in the exit of combustor through the steady tooth that fires, increase the combustion stability of this combustor. In addition, the nozzle end of the four-time air channel is designed into a tapered nozzle, so that the expansion angle of air sprayed out from the nozzle is basically stable, and the phenomenon of entrainment on the outer edge of the nozzle is avoided.
3. The utility model discloses can select for use flange or welded mode to be connected with solid fuel pipeline according to actual conditions, can design into straight tube or return bend according to the difference of concrete mounted position simultaneously with biomass pipeline's feed end and the confession coal end of a wind passageway and be connected, its application scope is wide, compact structure, the installation of the combustor of being convenient for, dismantlement and operation maintenance.
Description of the drawings:
fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of a combustion stabilizing tooth;
FIG. 3 is a schematic view of a single lobe configuration;
fig. 4 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 5 is a schematic structural view of embodiment 3 of the present invention;
fig. 6 is a schematic structural diagram of embodiment 4 of the present invention;
wherein: 1 biomass pipeline, 2 primary air channels, 3 secondary air channels, 4 tertiary air channels, 5 quaternary air channels, 6 stable combustion teeth, 61L-shaped convex teeth and 7 air boxes.
The specific implementation mode is as follows:
example 1
As shown in fig. 1, the utility model relates to a novel cyclone burner suitable for living beings directly mix with buggy, include: the biomass burner comprises a biomass pipeline 1, wherein one end of the biomass pipeline 1 is a nozzle end, the other end of the biomass pipeline 1 is a feeding end communicated with a biomass conveying pipeline, a primary air channel 2, a secondary air channel 3, a tertiary air channel 4 and a quartic air channel 5 which are concentrically arranged are sequentially sleeved on the periphery of the biomass pipeline 1 from inside to outside, the nozzle ends of the primary air channel 2, the secondary air channel 3, the tertiary air channel 4 and the quartic air channel 5 are arranged in the same direction as the nozzle end of the biomass pipeline 1, and in order to increase the combustion stability of the burner, a combustion stabilizing tooth 6 protruding towards the circle center direction is arranged on the inner wall of the nozzle end of the primary air channel 2, and is formed by more than two annular arrays of convex teeth extending towards the circle center direction, and is made of wear-resistant heat-resistant cast steel. The other end of the primary air channel 2 is a coal supply end connected with the pulverized coal conveying pipeline, the nozzle end of the quartic air channel 5 is a conical nozzle, the expansion angle of air sprayed out from the nozzle can be guaranteed to be basically stable through the conical nozzle, and the phenomenon of entrainment on the outer edge of the nozzle cannot occur. Install bellows 7 in the periphery of primary air passageway 2, the other end of overgrate air passageway 3, tertiary air passageway 4 and quartic wind passageway 5 all communicates with bellows 7, the connected mode between overgrate air passageway 3, tertiary air passageway 4 and quartic wind passageway 5 and the bellows 7 can select for use the welding, through flange joint or whole casting.
In order to prolong the service life of the biomass pipeline 1 and the primary air channel 2, ceramic anti-abrasion layers are arranged on the inner sides of the biomass pipeline 1 and the primary air channel 2 or the biomass pipeline 1 and the primary air channel 2 are made of wear-resistant cast steel. In the actual engineering application process, because the difference of mounted position, the pipeline shape that supplies the feed end of living beings pipeline and the coal feed end of wind passageway is also different once, can become straight pipe with the feed end design of living beings pipeline 1, in the return bend that supplies the coal end design of wind passageway 2 to become crooked, in living beings fuel sent into living beings pipeline 1 by the straight pipe promptly, in the buggy air current sent into wind passageway 2 in proper order by the return bend, two kinds of fuel sent into furnace after the spout department mixes.
Example 2
Example 2 differs from example 1 only in the shape of the feed end of the biomass pipeline 1 and the coal feed end of the primary air channel 2. The feeding end of the biomass pipeline 1 adopts a bent elbow; the coal supply end of the primary air channel 2 adopts a straight pipe, namely biomass fuel is sent into the biomass pipeline 1 through a bent pipe, pulverized coal airflow is sent into the sequential air channel 2 through the straight pipe, and the two fuels are mixed at a nozzle and then sent into a hearth.
Example 3
Example 3 differs from example 1 only in the shape of the feed end of the biomass pipeline 1 and the coal feed end of the primary air channel 2. The feeding end of the biomass pipeline 1 and the coal feeding end of the primary air channel 2 are straight pipes, namely biomass fuel is fed into the biomass pipeline 1 through the straight pipes, pulverized coal airflow is fed into the sequential air channel 2 through the straight pipes, and the two fuels are mixed at a nozzle and then fed into a hearth.
Example 4
Example 4 differs from example 1 only in the shape of the feed end of the biomass pipeline 1 and the coal feed end of the primary air channel 2. The feeding end of the biomass pipeline 1 and the coal feeding end of the primary air channel 2 are both bent elbows, namely biomass fuel is fed into the biomass pipeline 1 through a bent pipe, coal dust airflow is fed into the sequential air channel 2 through the bent pipe, and the two fuels are mixed at a nozzle and then fed into a hearth.
The working process is as follows:
the biomass airflow conveyed by the biomass pipeline 1 is directly mixed with the pulverized coal airflow conveyed by the primary air channel 2 at the nozzle of the burner, and then is sequentially mixed with the air airflows conveyed by the secondary air channel 3, the tertiary air channel 4 and the quartic air channel 5, so that staged combustion is realized, and Nitrogen Oxides (NO) are reducedX) And the like.
The above, only be the embodiments of the preferred embodiment of the present invention, these embodiments are all based on the present invention, in the above embodiments, as long as the technical solution of the present invention can be arranged and combined, and the skilled person in the art can exhaust all possibilities according to the mathematical knowledge of the arrangement and combination, therefore, the present invention does not perform a one-to-one description on the technical solution after the arrangement and combination, but should understand that the technical solution after the arrangement and combination has been disclosed by the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by the skilled person in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A novel cyclone burner suitable for direct mixing of biomass and pulverized coal is characterized by comprising: biomass pipeline (1), the one end of biomass pipeline (1) is the spout end, and the other end is the feed end with biomass pipeline intercommunication, and the periphery at biomass pipeline (1) is equipped with one-time wind passageway (2), overgrate air passageway (3), tertiary air passageway (4) and quartic wind passageway (5) that set up with one heart in proper order from inside to outside the cover, the spout end syntropy setting of spout end and biomass pipeline (1) of one-time wind passageway (2), overgrate air passageway (3), tertiary air passageway (4) and quartic wind passageway (5), at the spout of one-time wind passageway (2) end inner wall mounting to the bellied steady burning tooth (6) of centre of a circle direction, the other end of one-time wind passageway (2) is the coal supply end that links to each other with buggy pipeline, and the spout end of quartic wind passageway (5) is the toper spout, overgrate air passageway (3), The other ends of the tertiary air channel (4) and the quaternary air channel (5) are communicated with an air box (7), and the air box (7) is arranged on the periphery of the primary air channel (2).
2. The novel cyclone burner suitable for direct mixing of biomass and pulverized coal as claimed in claim 1, wherein: the combustion stabilizing teeth (6) are formed by more than two convex teeth (61) which extend towards the direction of the circle center in an annular array.
3. The novel cyclone burner suitable for direct mixing of biomass and pulverized coal as claimed in claim 1, wherein: the secondary air channel (3), the tertiary air channel (4), the quaternary air channel (5) and the air box (7) are connected by welding, flange connection or integral casting.
4. A new type cyclone burner suitable for direct mixing of biomass and pulverized coal as claimed in any one of claims 1 to 3, characterized in that: the feeding end of the biomass pipeline (1) is a straight section, and the coal supply end of the primary air channel (2) is a bent section.
5. A new type cyclone burner suitable for direct mixing of biomass and pulverized coal as claimed in any one of claims 1 to 3, characterized in that: the feeding end of the biomass pipeline (1) is a bent section, and the coal supply end of the primary air channel (2) is a straight section.
6. A new type cyclone burner suitable for direct mixing of biomass and pulverized coal as claimed in any one of claims 1 to 3, characterized in that: the feeding end of the biomass pipeline (1) and the coal supply end of the primary air channel (2) are both straight sections.
7. A new type cyclone burner suitable for direct mixing of biomass and pulverized coal as claimed in any one of claims 1 to 3, characterized in that: the feeding end of the biomass pipeline (1) and the coal supply end of the primary air channel (2) are both bent sections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921868717.2U CN210861071U (en) | 2019-11-01 | 2019-11-01 | Novel cyclone burner suitable for direct mixing of biomass and pulverized coal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921868717.2U CN210861071U (en) | 2019-11-01 | 2019-11-01 | Novel cyclone burner suitable for direct mixing of biomass and pulverized coal |
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| CN210861071U true CN210861071U (en) | 2020-06-26 |
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| CN201921868717.2U Active CN210861071U (en) | 2019-11-01 | 2019-11-01 | Novel cyclone burner suitable for direct mixing of biomass and pulverized coal |
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| CN (1) | CN210861071U (en) |
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