CN209116326U - A kind of coal burner - Google Patents
A kind of coal burner Download PDFInfo
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- CN209116326U CN209116326U CN201821735643.0U CN201821735643U CN209116326U CN 209116326 U CN209116326 U CN 209116326U CN 201821735643 U CN201821735643 U CN 201821735643U CN 209116326 U CN209116326 U CN 209116326U
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- internal channel
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Abstract
The utility model discloses a kind of coal burners, it is characterized in that, including the internal channel shell (8) and outer tunnel shell (9) being mutually nested, the internal channel shell (8) and outer tunnel shell (9) are in cylinder pile body and concentric setting, it is fixed by support fin (7) between the internal channel shell (8) and outer tunnel shell (9), so that forming surrounding air airflow channel (5) between internal channel shell (8) and outer tunnel shell (9), heat exchange fin (6) is equipped on the outside of the internal channel shell (8), i.e. heat exchange fin (6) is located in surrounding air airflow channel (5), internal channel shell (8) inner cavity forms combustion chamber (1), combustion chamber (1) is equipped with high speed winds channel (2), top breeze airflow channel (4) and lower part coal dust airflow channel (3), it is additionally provided with interior logical Road shell temperature thermocouple (10), the internal channel shell temperature thermocouple (10) are able to detect the temperature of internal channel shell (8).
Description
Technical field
High volatilization fine coal kind, which can either be used, the utility model relates to a kind of coal burner, especially one kind to fire
With low-volatile coal and with the coal burner of low nitrogen burning function.
Background technique
Thermal power plant's pulverized-coal fired boiler is according to requiring, and when design needs to consider used coal, and designed boiler all has
Particular requirement, such as: the burning in boiler anthracite that design uses bituminous coal will affect its effect of catching fire, and generate combustion instability, coal
The problem of powder burnout rate difference；The problem of on the contrary to will lead to burned fierceness, thermic load is excessively concentrated, and is easy scaling loss burner.But
It is in practice, may often occur needing some coals for not meeting boiler design requirement of burner combustion.Such as: have
Industrial waste caused by a little factories is highly advantageous value, such as semi-coke slag, calcium carbide clinker in fact for power plant,
This kind of low volatile ingredient, high-carbon content, golf calorific value fuel can be used as the fuel used to generate electricity of thermal power plant completely, to reduce coal
Consumption, while above-mentioned industrial waste can also be handled, accomplish circular economy, achieve the purpose that eat dry bleed.
But although existing circulating fluidized bed boiler is suitble to burn the fuel of high carbon content, since the partial size of waste material is past
It is past smaller, it is not able to satisfy the use of fluidized-bed combustion boiler, can not solve the problems, such as burnout rate.Pulverized-coal fired boiler and circulating fluidized bed boiler
Structure it is different, using coal powder boiler combustion semi-coke slag, this kind of high carbon content of calcium carbide clinker fuel when, it is also desirable to solve after-flame
Property the problem of, while also need to consider environmental protection requirement, i.e., reduction NOXDischarge.But in practice, industrial waste semi-coke slag,
The ingredient of calcium carbide clinker is unstable, it is necessary to a kind of coal burner with wide coal adaptability.
There are also the technical needs of depth peak regulation for thermal power plant simultaneously, and the low-load combustion-stabilizing ability of existing burner is limited, often
It needs through oxygen-enriched combusting, the means such as combustion-supporting realize that low-load combustion-stabilizing does not use it if the steady combustion ability of burner itself is strong
His ancillary measure can realize that low-load combustion-stabilizing can greatly reduce the complexity of boiler combustion system, reduce operating cost.
Therefore, a kind of structure is simple, easy to use, has wide coal, and the coal burner of wide load adaptability is suggested.
Summary of the invention
It is easy to use the technical problem to be solved by the utility model is to provide a kind of structure is simple, have wide coal suitable
The coal burner of answering property.
To achieve the above object, the utility model provides a kind of coal burner, which is characterized in that including being mutually nested
Internal channel shell (8) and outer tunnel shell (9), the internal channel shell (8) and outer tunnel shell (9) are in cylinder pile body and coaxial
Heart setting, it is fixed by support fin (7) between the internal channel shell (8) and outer tunnel shell (9), so that internal channel shell
(8) surrounding air airflow channel (5) are formed between outer tunnel shell (9), heat exchange fin is equipped on the outside of the internal channel shell (8)
Piece (6), i.e. heat exchange fin (6) are located in surrounding air airflow channel (5), and internal channel shell (8) inner cavity forms combustion chamber
(1), combustion chamber (1) is equipped with high speed winds channel (2), top breeze airflow channel (4) and lower part coal dust airflow channel (3), also sets
There is internal channel shell temperature thermocouple (10), the internal channel shell temperature thermocouple (10) is able to detect internal channel shell (8)
Temperature.
Above-mentioned high speed winds channel (2) is equipped with two groups, is respectively provided at the two sides of combustion chamber (1), top breeze airflow channel (4)
It is located at the top of combustion chamber (1), lower part coal dust airflow channel (3) is located at the lower section of combustion chamber (1).
The device of the utility model can be mounted on quadrangle tangential circle pulverized-coal fired boiler, adapt to a variety of usages, be had good
Good control NOXThe coal burner of discharge.
Including combustion chamber 1, combustion chamber 1 is made of internal channel shell 8, and internal channel shell exterior is also cased with outer tunnel shell 9.
A surrounding air airflow channel 5 is formed between internal channel shell 8 and outer tunnel shell 9, it is uniform in the outside of interior channel envelope
It is disposed with heat exchange fin 6, support fin 7 is disposed in the middle part of four walls, heat exchange fin 6 is not connected with outer tunnel shell 9, supports
Fin 7 is connected with outer tunnel shell 9 plays the role of support.The two of the inside of combustion chamber be equipped with top breeze airflow channel 4,
Lower part coal dust airflow channel 3, high speed winds channel 2, fuel gas spout, high energy ignition unit.It is also installed on interior channel envelope 8
There is internal channel shell temperature thermocouple.
The burner is mounted on the burner region of pulverized-coal fired boiler quadrangle when in use, to substitute traditional direct current coal dust combustion
Burner or two―chaneel control lower part coal dust airflow channel 3 connect coal pipe, high speed winds with the tail portion in top breeze airflow channel 4
Channel 2 is connected with surrounding air airflow channel 5 with secondary air bellow.
In coal dust burning, breeze airflow prolongs A and leads to by lower part coal dust airflow channel 3 and top breeze airflow the burner
Road 4 enters simultaneously, and high speed winds are prolonged A to the high speed winds airflow channel by both sides while being entered, the flow in two breeze airflow channels
Can be separately adjustable, cooperatively formed with high speed winds prolong B to volume inhale furnace high-temperature flue gas combustion chamber formed stablize burning effect.Under
The breeze airflow speed in portion breeze airflow channel 3 and top breeze airflow channel 4 and separately adjustable to reach best burning effect
Fruit.The burner fin 6 that exchanges heat when in use brings the heat of combustion chamber to surrounding air, plays reduction burning indoor channel
The effect of 8 temperature of shell, protection burning indoor channel shell are not burned when using high-volatile coal.After heating simultaneously
Surrounding air, the flame sprayed with combustion chamber quickly mix, and play better combustion-supporting effect, improve after-flame effect, improve steady combustion energy
Power.Since the relatively width of surrounding air channel width design is 5cm or more, the air quantity of surrounding air is big, can mention in first time for burning
Oxygen-supplying amount guarantees the after-flame of coal dust.Due to have heat exchange fin reduce burning indoor channel shell 8 temperature, heat surrounding air, because
This burner can guarantee that combustion chamber is not burnt out when using bituminous coal, again can when using anthracite, calcium carbide clinker, semi-coke slag
Guarantee to mix within first time with the higher surrounding air of temperature and improves after-flame effect.
Temperature thermocouple 10 is installed on the burning indoor channel shell 8 of the burner, plays and judges burner combustion work
The effect of condition, also can detecte wall temperature, accomplishes that air quantity can be adjusted in time, prevents the effect of burner scaling loss.
Structure is simple compared with prior art, easy to use, has many advantages, such as wide coal and wide load adaptability.
Detailed description of the invention
Fig. 1 is the utility model structure diagram.
Fig. 2 is Fig. 1 side structure schematic view.
As shown in the figure: 1 is combustion chamber, and 2 be high speed winds channel, and 3 be lower part coal dust airflow channel, and 4 be top breeze airflow
Channel, 5 be surrounding air airflow channel, and 6 be heat exchange fin, and 7 be support fin, and 8 be internal channel shell, and 9 be outer tunnel shell, 10
It is internal channel shell temperature thermocouple.
Specific embodiment
The following detailed description of preferred embodiments of the present invention.
Embodiment 1: being the structural schematic diagram of the utility model embodiment 1 referring to Fig.1, discloses a kind of wide scope of application
Coal burner include combustion chamber 1, combustion chamber 1 is made of internal channel shell 8, is also cased with outer tunnel outside internal channel shell 8
Shell 9.A surrounding air airflow channel 5 is formed between internal channel shell 8 and outer tunnel shell 9, in the outside of interior channel envelope
It is uniformly disposed with heat exchange fin 6, support fin 7 is disposed in the middle part of four walls, heat exchange fin 6 is not connected with outer tunnel shell 9
It connects, support fin 7 is connected with outer tunnel shell 9 plays the role of support.The two of the inside of combustion chamber 1 are equipped with top coal dust gas
Circulation road 4, lower part coal dust airflow channel 3, high speed winds channel 2, fuel gas spout, high energy ignition unit.
It that is: mainly include combustion chamber 1, breeze airflow channel, high speed winds channel 2, surrounding air airflow channel 5, fuel gas
Spout.
Combustion chamber 1 is made of internal channel shell 8, and inside is equipped with top breeze airflow channel 4, lower part coal dust airflow channel
3, high speed winds channel 2, fuel gas spout, high energy ignition unit.
It is also cased with one layer of outer tunnel shell 9 outside combustion chamber 1, constitutes surrounding air channel 5 with internal channel shell 8.
Internal channel shell 8 includes four walls of surrounding and the end plate composition of tail portion, the other end of internal channel shell 8 are to open
's.
Breeze airflow channel is divided into top breeze airflow channel 4 and lower part coal dust airflow channel 3, is separately mounted to combustion chamber
Upper and lower part.High speed winds air duct 2 is divided to control two, and the both ends of combustion chamber 1 are mounted on.The outlet end in breeze airflow channel
The exit end face in face and high speed winds channel is inside combustor exit end face.
Fuel gas spout and high energy ignition unit are also equipped in combustion chamber 1.
Internal channel shell exterior is evenly arranged heat exchange fin 6, and four wall intermediate arrangements support fin 7.The fin 6 that exchanges heat leads to outer
Road shell 9 is not associated with, and support fin 7 is connect with outer tunnel shell 9.
The thermocouple of TCH test channel wall temperature is installed on four walls of internal channel shell exterior.
The width of surrounding air airflow channel 5 is 5cm or more.
In the same position, two sides high speed winds air-flow is logical for top breeze airflow channel and the end face of lower part coal dust airflow channel
Also in the same position, the end face of high speed winds airflow channel is leaned on than the end face in two breeze airflow channels into combustion chamber for the end face in road
Tail portion end plate
Above-described is only the utility model/utility model preferred embodiment, it is noted that for this field
For those of ordinary skill, without departing from the concept of the present invention, several changes and improvements can also be made,
These are all within the protection scope of the present invention.
Claims (2)
1. a kind of coal burner, which is characterized in that including the internal channel shell (8) and outer tunnel shell (9) being mutually nested, institute
Internal channel shell (8) and outer tunnel shell (9) are stated in cylinder pile body and concentric setting, the internal channel shell (8) and outer tunnel
It is fixed by support fin (7) between shell (9), so that forming surrounding air between internal channel shell (8) and outer tunnel shell (9)
Airflow channel (5) is equipped with heat exchange fin (6) on the outside of the internal channel shell (8), i.e. heat exchange fin (6) is located at circumference general mood
In circulation road (5),
Internal channel shell (8) inner cavity forms combustion chamber (1), and combustion chamber (1) is equipped with high speed winds channel (2), top coal dust gas
Circulation road (4) and lower part coal dust airflow channel (3) are additionally provided with internal channel shell temperature thermocouple (10), the internal channel shell
Temperature thermocouple (10) is able to detect the temperature of internal channel shell (8).
2. coal burner as described in claim 1, which is characterized in that high speed winds channel (2) are equipped with two groups, are respectively provided at combustion
The two sides of room (1) are burnt, top breeze airflow channel (4) is located at the top of combustion chamber (1), and lower part coal dust airflow channel (3) is located at
The lower section of combustion chamber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821735643.0U CN209116326U (en) | 2018-10-24 | 2018-10-24 | A kind of coal burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821735643.0U CN209116326U (en) | 2018-10-24 | 2018-10-24 | A kind of coal burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209116326U true CN209116326U (en) | 2019-07-16 |
Family
ID=67202202
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821735643.0U Active CN209116326U (en) | 2018-10-24 | 2018-10-24 | A kind of coal burner |
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| CN (1) | CN209116326U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184222A (en) * | 2021-10-11 | 2022-03-15 | 华能(浙江)能源开发有限公司玉环分公司 | Powder accumulation fire prevention detection method and device for pulverized coal pipe |
-
2018
- 2018-10-24 CN CN201821735643.0U patent/CN209116326U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114184222A (en) * | 2021-10-11 | 2022-03-15 | 华能(浙江)能源开发有限公司玉环分公司 | Powder accumulation fire prevention detection method and device for pulverized coal pipe |
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