CN213810603U - Heating type combustor - Google Patents
Heating type combustor Download PDFInfo
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- CN213810603U CN213810603U CN202022547277.XU CN202022547277U CN213810603U CN 213810603 U CN213810603 U CN 213810603U CN 202022547277 U CN202022547277 U CN 202022547277U CN 213810603 U CN213810603 U CN 213810603U
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- air
- heating
- burner
- powder feeding
- nozzle
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Abstract
The utility model discloses a heating burner, which comprises a body and an equal split body, wherein the body comprises an inlet part, a mixing heating part and a nozzle part; the inlet part is connected with powder feeding air; the nozzle part sprays heated powder feeding air into the furnace body; the mixing heating part is used for heating the powder feeding air, and the uniform distribution part is positioned in the main body, is arranged at the position of the mixing heating part and is connected to the outer side of the main body through a hot air pipe; a plurality of air holes are distributed on the equal parts, and hot air in the equal parts enters the mixed heating part through the air holes. Therefore, the utility model discloses an add fever type combustor and improve the temperature of going into the stove and sending the powder wind, be favorable to furnace's burning, improve combustion temperature, reduced the burn-off time of coal in theory, the flying dust carbon content descends to some extent, has improved the utilization of fuel, has very big economic benefits.
Description
Technical Field
The utility model relates to a boiler field especially relates to an add fever type combustor.
Background
For a pulverized coal boiler with lean coal combustion and medium storage type hot air powder feeding, it is very important to stabilize the temperature of a combustion area of a hearth. For lean coal, the temperature of the coal powder entering the furnace is improved through a hot air powder feeding process, and meanwhile, the coal powder entering the furnace is ignited in advance, so that the lean coal is favorably combusted in a hearth.
For a powder making system of the medium storage type hot air powder feeding, the air which conveys the pulverized coal to the powder bin through the powder making system contains 10% of the pulverized coal and is called as tertiary air, in order to fully utilize 10% of the pulverized coal in the tertiary air, the air can be directly conveyed into a hearth through a powder discharge fan, however, as the temperature of the air is reduced to about 80 ℃ after the air is made into powder, compared with the temperature in the hearth, the tertiary air is equivalent to cold air, which is unfavorable for maintaining the temperature in the hearth, so that how to ensure the utilization of the tertiary air and stabilizing the temperature of a combustion area of the hearth are problems which are always solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: provides a heating type burner to solve the problem that the temperature of the tertiary air entering the furnace is low at present.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a heating type burner comprises a body and an equal split body, wherein the body comprises an inlet part, a mixing heating part and a nozzle part;
the inlet part is connected with powder feeding air; the nozzle part sprays heated powder feeding air into the furnace body.
The mixing heating part is used for heating the powder feeding air, and the uniform distribution part is positioned in the main body, is arranged at the position of the mixing heating part and is connected to the outer side of the main body through a hot air pipe;
a plurality of air holes are distributed on the equal parts, and hot air in the equal parts enters the mixed heating part through the air holes.
Compared with the prior art, the utility model discloses following technological effect has:
the utility model discloses a tertiary air combustor structural take neotype design, improve the temperature of tertiary air, be favorable to furnace's burning, improve combustion temperature, reduced the burn-off time of coal in theory, so to descend to some extent to flying dust carbon content, improved the utilization of fuel, have very big economic benefits.
On the basis of the technical scheme, the utility model discloses can also do following improvement.
Preferably, the air holes are oriented perpendicular to the flowing direction of the powder feeding wind.
The beneficial effect of adopting above-mentioned further scheme is that can be more abundant mix with the powder air that send, realize the heating to sending powder air.
Preferably, the end of each split body close to the nozzle is conical.
The beneficial effect of adopting above-mentioned further scheme is that accord with the aerodynamics more, reduces the influence to spout air current form.
Preferably, the nozzle is provided with a combustion stabilizer, and the combustion stabilizer is used for forming a negative pressure area at the nozzle to enable flame in the hearth to flow back and ignite the pulverized coal in the pulverized coal feeding air in advance.
The beneficial effect of adopting the further proposal is that the flame in the hearth flows back, the coal powder in the powder feeding air is ignited in advance, and the temperature of the combustion area in the hearth is stabilized.
Furthermore, the combustion stabilizing body is in a regular triangular prism shape, and one side surface of the combustion stabilizing body is parallel to the plane where the nozzle is located.
The beneficial effect of adopting the further scheme is that the structure is simple, and the negative pressure area is easy to form.
Drawings
Fig. 1 is a schematic structural view of a heating burner of the present invention;
fig. 2 is a schematic view of the working principle of the combustion stabilizing body.
In the drawings, the parts names represented by the respective reference numerals are listed as follows:
1. a body;
1-1, an inlet part;
1-2, mixing and heating;
1-3, a nozzle part;
1-4, the plane of the nozzle;
2. are all split;
2-1, air holes;
2-2, end;
3. a hot air pipe;
4. a stable combustion body;
4-1, a major side;
5. a negative pressure region.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
Fig. 1 is a schematic structural view of a heating burner according to the present invention, which is used for heating tertiary air. The heating type burner comprises a body 1 and an equal distribution body 2, wherein the body 1 comprises an inlet part 1-1, a mixing and heating section 1-2 and a nozzle part 1-3;
the inlet part 1-1 is connected with powder feeding air, and introduces tertiary air of a powder making system into the combustor; the nozzle part 1-3 sprays heated powder feeding air into the furnace body;
the mixing and heating part 1-2 is used for heating the powder feeding air, and the uniform components 2 are positioned in the main body 1, arranged at the corresponding positions of the mixing and heating part 1-2 and connected to the outer side of the main body 1 through a hot air pipe 3; the hot air pipe 3 is connected with a hot air system of the boiler.
A plurality of air holes 2-1 are distributed on the homomorphic body 2, and hot air in the homomorphic body 2 enters the mixed heating part 1-2 through the air holes 2-1;
as shown in fig. 2, the combustion stabilizing body 4 is arranged at the position of the nozzle part 1-3, is in a regular triangular prism shape, and has a main side surface 4-1 parallel to the plane 1-4 where the nozzle is located, when tertiary air is sprayed into the hearth, the combustion stabilizing body 4 divides airflow into an upper airflow and a lower airflow, and a negative pressure area 5 is formed between the two airflows, so that flame backflow ignites pulverized coal in the tertiary air, and the function of pre-ignition combustion stabilizing flame is achieved;
the nozzles 1-3 are flow windows for the tertiary air to enter the hearth, and the air speed of the tertiary air is only controlled;
the hot air enters the even body 2 through the hot air port, the even body 2 is provided with a plurality of air holes 2-1 on the circular pipeline, the hot air is mixed with the surrounding tertiary air, and the tertiary air is heated at the same time.
According to theoretical calculation, the sizes of the nozzles 1-3 are reasonably designed, so that the wind speed of tertiary air can be controlled, and a power field in a hearth cannot be changed; through the theoretical calculation of heat balance, can calculate and heat the required heat of specified temperature with the tertiary air heating, and then adjust the air supply volume of hot-blast main.
The utility model has the advantages and positive effects that: simple structure, can improve the temperature of entering the furnace of tertiary air, is favorable to improving the combustion condition of a hearth, can reduce the carbon content of fly ash and the like.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. A heating type burner is characterized by comprising a body and an equal split body, wherein the body comprises an inlet part, a mixing heating part and a nozzle part;
the inlet part is connected with powder feeding air; the nozzle part sprays heated powder feeding air into the furnace body;
the mixing heating part is used for heating the powder feeding air, and the uniform distribution part is positioned in the main body, is arranged at the position of the mixing heating part and is connected to the outer side of the main body through a hot air pipe;
a plurality of air holes are distributed on the equal parts, and hot air in the equal parts enters the mixed heating part through the air holes.
2. A burner as recited in claim 1, wherein said air holes are oriented perpendicular to the direction of flow of the pulverized coal-feeding air.
3. A heated burner as claimed in claim 1 or claim 2, wherein the end of the segments adjacent the outlet are tapered.
4. The heating burner of claim 1 or 2, wherein a combustion stabilizer is arranged at the nozzle, and the combustion stabilizer is used for forming a negative pressure zone at the nozzle, so that flame in a hearth flows back, and pulverized coal in the pulverized coal feeding air is ignited in advance.
5. A heating burner as recited in claim 4, wherein said body is in the form of a regular triangular prism having a side surface parallel to the plane of the burner ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022547277.XU CN213810603U (en) | 2020-11-06 | 2020-11-06 | Heating type combustor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022547277.XU CN213810603U (en) | 2020-11-06 | 2020-11-06 | Heating type combustor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213810603U true CN213810603U (en) | 2021-07-27 |
Family
ID=76965647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022547277.XU Active CN213810603U (en) | 2020-11-06 | 2020-11-06 | Heating type combustor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213810603U (en) |
-
2020
- 2020-11-06 CN CN202022547277.XU patent/CN213810603U/en active Active
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