CN210267209U - Multistage cyclone low-heat-value low-nitrogen gas burner - Google Patents
Multistage cyclone low-heat-value low-nitrogen gas burner Download PDFInfo
- Publication number
- CN210267209U CN210267209U CN201921136531.8U CN201921136531U CN210267209U CN 210267209 U CN210267209 U CN 210267209U CN 201921136531 U CN201921136531 U CN 201921136531U CN 210267209 U CN210267209 U CN 210267209U
- Authority
- CN
- China
- Prior art keywords
- fuel
- cylinder
- central
- low
- swirl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a multistage cyclone low heat value low nitrogen gas burner, which comprises a central fuel cylinder, a central wind cylinder, a fuel outer cylinder and a burner box shell which are distributed from inside to outside in sequence, wherein the central fuel cylinder is provided with a central fuel inlet, and the central wind cylinder is provided with a central wind inlet; a first cyclone disk is arranged between the central fuel cylinder and the central air cylinder, a second cyclone disk is arranged between the central air cylinder and the fuel outer cylinder, and a third cyclone disk is arranged between the fuel outer cylinder and the combustor box shell; a combustion-supporting air inlet is arranged on the side surface of the combustor box shell, wherein the combustion-supporting air inlet is communicated with the central air duct and the combustor box shell; the outer side of the combustor case is provided with a low-heat value gas fuel inlet which is communicated with the central fuel cylinder and the fuel outer cylinder.
Description
Technical Field
The utility model belongs to the technical field of the clean burning of ultra-low nitrogen, a multistage whirl low heat value low nitrogen gas burner is related to.
Background
In recent years, the demand and price of energy are rising, the energy supply is relatively tight, the problem of energy gap is becoming more and more obvious, and the global environmental problems are becoming more and more prominent, such as the problems of climate warming, acid rain and photochemical smog, so that the environmental problems are getting more and more social attention.
The gas fuel has the characteristics of higher combustion efficiency, low pollution emission and the like, so the gas fuel is widely applied to industrial furnaces (kilns) and boilers in the industries of electric power, chemical engineering, metallurgy, building materials and the like as clean energy. Research on gas burners, which are key devices, has been progressing. But its research has focused primarily on improving the performance of the combustor. And much less attention has been paid to the control of contaminants.
The standard of Shaanxi province of 1 month and 1 day in 2019 is reduced, and the control standard of NOx emission mass concentration of all gas-fired boilers (including low-heat value gas-fired boilers) is reduced to 50mg/m3(Standard, 3.5% O)2). Conventional low calorific value gas burners alone have not been able to meet emissions requirements. Therefore, it is urgently required to develop a low-calorific-value low-NOx gas burner to meet the latest environmental standards.
At present, the research on low-heat value low-nitrogen gas burners is very little, and with the increasing strictness of environmental protection standards, the energy-saving and environmental-protection improvement of gas-fired boilers is urgent, so that a low-heat value gas burner with high combustion efficiency and low nitrogen oxide emission is urgently needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a multistage whirl low heat value low nitrogen gas burner, this burner has the characteristics of high combustion efficiency and low nitrogen oxide emission.
In order to achieve the above purpose, the multi-stage cyclone low-calorific-value low-nitrogen gas burner of the present invention comprises a central fuel cylinder, a central wind cylinder, a fuel outer cylinder and a burner box shell which are sequentially distributed from inside to outside, wherein a central fuel channel is formed in the central fuel cylinder, an annular inner cyclone wind region is formed between the central fuel cylinder and the central wind cylinder, an annular fuel cyclone region is formed between the central wind cylinder and the fuel outer cylinder, an annular outer cyclone wind region is formed between the fuel outer cylinder and the burner box shell, a central fuel inlet is arranged on the central fuel cylinder, and a central wind inlet is arranged on the central wind cylinder;
a first cyclone disk is arranged between the central fuel cylinder and the central air cylinder, a second cyclone disk is arranged between the central air cylinder and the fuel outer cylinder, and a third cyclone disk is arranged between the fuel outer cylinder and the combustor box shell;
a combustion-supporting air inlet is arranged on the side surface of the combustor box shell, wherein the combustion-supporting air inlet is communicated with the central air duct and the combustor box shell; the outer side of the combustor box shell is provided with a low-heat value gas fuel inlet which is communicated with the central fuel cylinder and the fuel outer cylinder.
The rotational flow direction of the first rotational flow disk is the same as or opposite to that of the third rotational flow disk.
The rotational flow direction of the second rotational flow disk is the same as or opposite to that of the first rotational flow disk and that of the third rotational flow disk.
A bluff body is arranged at the nozzle of the central fuel channel.
The bluff body is of a circular structure.
The utility model discloses following beneficial effect has:
multistage whirl low heat value low nitrogen gas burner when concrete operation, combustion-supporting gas divides the second grade blowout through interior center dryer and burner box shell, low heat value gas fuel divides the second grade to mix with combustion-supporting gas through center fuel section of thick bamboo and outer fuel section of thick bamboo, thereby make low heat value gas fuel and combustion-supporting air realize the homogeneous mixing, with control NOx's formation, low heat value gas fuel arranges including between whirl wind and the outer whirl wind simultaneously, the steady burning ability has been strengthened, combustion efficiency has been improved, reduce nitrogen oxide's emission, and simultaneously, moreover, the steam generator is simple in structure, and is low in cost.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the nozzle of the present invention.
Wherein, 1 is combustor case shell, 2 is the fuel urceolus, 3 is central dryer, 4 is central fuel section of thick bamboo, 5 is central wind entry, 6 is combustion air entry, 7 is low calorific value gaseous fuel entry, 8 is central fuel entry, 9 is first spinning disk, 10 is the second spinning disk, 11 is the third spinning disk.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1 and 2, the multi-stage cyclone low-calorific-value low-nitrogen gas burner of the present invention comprises a central fuel cylinder 4, a central air cylinder 3, a fuel outer cylinder 2 and a burner box shell 1 which are sequentially distributed from inside to outside, wherein a central fuel channel is formed in the central fuel cylinder 4, an annular inner cyclone air region is formed between the central fuel cylinder 4 and the central air cylinder 3, an annular fuel cyclone region is formed between the central air cylinder 3 and the fuel outer cylinder 2, an annular outer cyclone air region is formed between the fuel outer cylinder 2 and the burner box shell 1, a central fuel inlet 8 is arranged on the central fuel cylinder 4, and a central air inlet 5 is arranged on the central air cylinder 3; a first cyclone disk 9 is arranged between the central fuel cylinder 4 and the central air cylinder 3, a second cyclone disk 10 is arranged between the central air cylinder 3 and the fuel outer cylinder 2, and a third cyclone disk 11 is arranged between the fuel outer cylinder 2 and the combustor box shell 1; a combustion-supporting air inlet 6 is arranged on the side surface of the combustor box shell 1, wherein the combustion-supporting air inlet 6 is communicated with the central air duct 3 and the combustor box shell 1; the outer side of the combustor box shell 1 is provided with a low-heat value gas fuel inlet 7, and the low-heat value gas fuel inlet 7 is communicated with the central fuel cylinder 4 and the fuel outer cylinder 2.
The rotational flow direction of the first rotational flow disk 9 is the same as or opposite to that of the third rotational flow disk 11; the direction of the swirling flow of the second swirling flow disk 10 is the same as or opposite to the direction of the swirling flow of the first swirling flow disk 9 and the direction of the swirling flow of the third swirling flow disk 11.
A blunt body is arranged at a nozzle of the central fuel channel; the bluff body is of a circular structure.
The utility model discloses a low heat value gas fuel reaches super mixing state with combustion air in grades to reach the purpose that maximum reduction nitrogen oxide, reach high load regulation nature, furnace and fuel adaptability through adjusting gaseous fuel at different levels, amount of wind simultaneously, when concrete implementation, the utility model discloses a low heat value gas boiler takes off sales and provides an economic transformation technical route, under the denitration device condition that does not increase, singly leans on the combustor just can reduce gas boiler nitrogen oxide emission to 50mg/m3(Standard, 3.5% O)2) The latest environmental standard requirements are satisfied below.
Claims (5)
1. A multi-stage cyclone low-calorific-value low-nitrogen gas burner is characterized by comprising a central fuel cylinder (4), a central air cylinder (3), a fuel outer cylinder (2) and a burner box shell (1) which are sequentially distributed from inside to outside, wherein a central fuel channel is formed in the central fuel cylinder (4), an annular inner cyclone air region is formed between the central fuel cylinder (4) and the central air cylinder (3), an annular fuel cyclone region is formed between the central air cylinder (3) and the fuel outer cylinder (2), an annular outer cyclone air region is formed between the fuel outer cylinder (2) and the burner box shell (1), a central fuel inlet (8) is formed in the central fuel cylinder (4), and a central air inlet (5) is formed in the central air cylinder (3);
a first cyclone disk (9) is arranged between the central fuel cylinder (4) and the central air cylinder (3), a second cyclone disk (10) is arranged between the central air cylinder (3) and the fuel outer cylinder (2), and a third cyclone disk (11) is arranged between the fuel outer cylinder (2) and the combustor box shell (1);
a combustion-supporting air inlet (6) is formed in the side face of the combustor box shell (1), wherein the combustion-supporting air inlet (6) is communicated with the central air duct (3) and the combustor box shell (1); the outer side of the combustor box shell (1) is provided with a low-heat value gas fuel inlet (7), and the low-heat value gas fuel inlet (7) is communicated with the central fuel cylinder (4) and the fuel outer cylinder (2).
2. A multi-stage swirl low heating value low nitrogen gas burner according to claim 1, characterised in that the direction of swirl of the first swirl disk (9) is the same as or opposite to the direction of swirl of the third swirl disk (11).
3. A multi-stage swirl low heating value low nitrogen gas burner according to claim 1, characterised in that the direction of swirl of the second swirl disk (10) is the same as or opposite to the direction of swirl of the first swirl disk (9) and the direction of swirl of the third swirl disk (11).
4. The multi-stage cyclonic low heating value low nitrogen gas burner of claim 1 wherein a bluff body is disposed at the nozzle of the central fuel passage.
5. The multi-stage cyclonic low heating value low nitrogen gas burner of claim 4 wherein the bluff body is of circular configuration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921136531.8U CN210267209U (en) | 2019-07-18 | 2019-07-18 | Multistage cyclone low-heat-value low-nitrogen gas burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921136531.8U CN210267209U (en) | 2019-07-18 | 2019-07-18 | Multistage cyclone low-heat-value low-nitrogen gas burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210267209U true CN210267209U (en) | 2020-04-07 |
Family
ID=70012109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921136531.8U Active CN210267209U (en) | 2019-07-18 | 2019-07-18 | Multistage cyclone low-heat-value low-nitrogen gas burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210267209U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296396A (en) * | 2019-07-18 | 2019-10-01 | 西安西热锅炉环保工程有限公司 | A kind of low nitrogen burner of Multi-stage spiral low heat value |
-
2019
- 2019-07-18 CN CN201921136531.8U patent/CN210267209U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296396A (en) * | 2019-07-18 | 2019-10-01 | 西安西热锅炉环保工程有限公司 | A kind of low nitrogen burner of Multi-stage spiral low heat value |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103727536B (en) | The multistage adjustable strong and weak rotation flow impact gas burner of ultralow nitrogen | |
| CN203628654U (en) | Ultralow-nitrogen multistage intensity adjustable swirl-opposed gas combustor | |
| CN204987009U (en) | Wide in range high -efficient low NOx burner | |
| CN101825278A (en) | Oxygen-rich combustor | |
| CN204165044U (en) | The premixed coal dust low NO of a kind of adverse current | |
| CN109373316A (en) | A kind of heating natural gas hot water boiler low NO | |
| CN112984507B (en) | Air fuel multilayer three-dimensional grading low-nitrogen gas burner | |
| CN100422636C (en) | Low NOx oil gun device heated by backheating | |
| CN111237759A (en) | Low-nitrogen gas burner suitable for medium-low heat value fuel | |
| CN104180368A (en) | Medium-and-low temperature hot fume powder feeding type coal powder combustion device and combustion process thereof | |
| CN100434797C (en) | Combustion technology of low nitrogen oxide | |
| CN103672883A (en) | Grid type swirl burner | |
| CN210267209U (en) | Multistage cyclone low-heat-value low-nitrogen gas burner | |
| CN211694879U (en) | Low-nitrogen gas burner suitable for medium-low heat value fuel | |
| CN211204047U (en) | Novel low-nitrogen gas burner | |
| CN205119800U (en) | Air classification formula low -nitrogen combustion tube heating furnace | |
| CN210035479U (en) | Central dense-dilute burning loss prevention cyclone burner | |
| CN204901756U (en) | Partly mix low NOx burner in advance | |
| CN208418734U (en) | A kind of low-NOx combustor for natural gas and coal dust | |
| CN1793737A (en) | Direct flow oil-saving burner faulty coal for combustion | |
| CN205782858U (en) | A kind of cyclone gasification burning premix burner | |
| CN205137462U (en) | A many fuel combustor for wind channel heating | |
| CN204165042U (en) | Middle Low Temperature Thermal flue gas powder feeding coal powder burner | |
| CN114659103A (en) | Flue gas recirculation oxygen boosting combustor suitable for degree of depth peak regulation | |
| CN109442400B (en) | Standing vortex type smoke internal circulation low-nitrogen combustor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |