CN210711425U - Gasifier nozzle with denitration device - Google Patents
Gasifier nozzle with denitration device Download PDFInfo
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- CN210711425U CN210711425U CN201921351254.2U CN201921351254U CN210711425U CN 210711425 U CN210711425 U CN 210711425U CN 201921351254 U CN201921351254 U CN 201921351254U CN 210711425 U CN210711425 U CN 210711425U
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Abstract
The utility model provides a gasifier nozzle with denitrification facility sets up denitrification facility on the nozzle body, denitrification facility includes conveying pipeline and atomizing nozzle, the conveying pipeline is including a portion of bending, the portion of bending is located in the wind channel, conveying pipeline one end with atomizing nozzle connects, and the other end passes outer cone is connected with denitration medium source, atomizing nozzle is located interior cone left side is located simultaneously outer cone is inboard, utilizes denitrification facility with denitration medium in spouting into the flue gas, with the flue gas intensive mixing and take place the nitrogen oxide in the reaction reduction flue gas in order to reach the effect that reduces nitrogen oxide.
Description
Technical Field
The utility model belongs to the technical field of the gasifier and specifically relates to a gasifier nozzle with denitrification facility is related to.
Background
A biomass gasification furnace: the biomass briquette is mainly prepared by compressing waste straws, wood chips, wood shavings and other agricultural and forestry wastes into biomass molding particles as fuel, combustible gases such as carbon monoxide, hydrogen, a small amount of methane and hydrocarbons are generated through pyrolysis and gasification, and the combustible gases are gasified and combusted through secondary reasonable air distribution, so that the heat efficiency is improved, the energy is saved by more than 20% compared with the traditional layer combustion mode, and smoke dust and wastes generated in the combustion process meet the relevant national atmospheric emission standards. Thereby effectively saving energy, efficiently and environmentally utilizing waste resources and being beneficial to maintaining atmospheric CO2Balance, reduce global greenhouse effect and have obvious promotion effect on building conservation-oriented society.
The feeding and pyrolysis gasification of the existing biomass gasification furnace are carried out in a furnace chamber. The pyrolysis gasification degree of the raw materials is low, the temperature of a combustion area in a furnace cavity is uneven, local high temperature is easily caused, thermal nitrogen oxides are generated, and the environment is polluted. Therefore, it is desirable to provide a device capable of reducing nitrogen oxide emissions from a biomass gasifier.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art not enough, provide a gasifier nozzle with denitrification facility, the gasifier gas is at the burning of nozzle body, and the waste gas that generates after the burning also is by the discharge of burning nozzle body department, the utility model provides a gasifier nozzle with denitrification facility carries out the denitration to burning flame in the gas combustion process to can be got rid of the nitrogen oxide that generates in most stove when burning nozzle body department discharges, reduce the pollution to the environment.
The purpose of the utility model is realized through the following technical scheme:
a gasifier nozzle with a denitration device comprises a nozzle body, wherein the nozzle body comprises a gas pipe, an annular air distribution box and a double-cone-shaped burner, a first air inlet is formed in the air distribution box, the double-cone-shaped burner comprises an inner cone and an outer cone, an air channel is formed between the inner cone and the outer cone, the air distribution box is connected with the right end of the double-cone-shaped burner to provide an air source for the double-cone-shaped burner, an air outlet is formed at the left end of the double-cone-shaped burner, the length of the outer cone extending leftwards is larger than the length of the inner cone extending leftwards, the gas pipe is positioned inside the air distribution box, the gas pipe is used for conveying gas, the denitration device further comprises a denitration device, the denitration device comprises a material conveying pipe and an atomizing nozzle, the material conveying pipe comprises a bending portion, the bending portion is positioned in the air channel, one end of the material conveying pipe, the other end of the atomization nozzle penetrates through the outer cone and is connected with a denitration medium source, and the atomization nozzle extends out of the air outlet.
Specifically, the denitration device is located above the inner cone, and the spray holes of the atomizing nozzle point to the central axis of the inner cone.
Specifically, the outer cone cylinder is provided with a through hole allowing the feed delivery pipe to pass through, and a sealing ring is arranged between the through hole and the feed delivery pipe.
Specifically, the left end of the air duct is provided with first tangential blades circumferentially distributed along the outer side of the inner cone, and air forms swirling air when passing through the first tangential blades.
Specifically, the burner body further comprises an annular secondary air box, a second air inlet is formed in the secondary air box, the secondary air box is located on the right side of the biconical burner, the right side of the secondary air box is connected with a connecting plate, the gas pipe is located on the inner side of the secondary air box, and the right end of the gas pipe is fixedly connected with the connecting plate; the air distribution box is fixedly connected to the secondary air box, the inner side wall of the air distribution box is tightly attached to the outer side wall of the secondary air box, a secondary air outlet is formed at the left end of the secondary air box, a second tangential blade is arranged at the position, close to the secondary air outlet, in the secondary air box, and air forms rotational flow gas when passing through the second tangential blade.
Specifically, the gas pipe with leave the gap between the secondary bellows and form a wind channel, it has a wind hole to open on the inner wall of secondary bellows, a wind hole will a wind channel with secondary bellows intercommunication, the length that secondary bellows stretched out left is greater than the length that the gas pipe stretched out left.
Specifically, a spiral guide vane is arranged in the primary air duct, and the inner side and the outer side of the guide vane are respectively fixedly connected with the gas pipe and the secondary air box.
The utility model discloses following beneficial effect has: the utility model provides a gasifier nozzle with denitrification facility sets up denitrification facility on the nozzle body, utilizes denitrification facility with the denitration medium in spouting into the flue gas, with flue gas intensive mixing and take place the effect that the nitrogen oxide in the reaction reduction flue gas is in order to reach reduction nitrogen oxide. The utility model discloses bury the conveying pipeline partly in the wind channel of nozzle body, it is inboard to make atomizing nozzle locate interior cone left side and be located outer cone simultaneously to inferior, when can making spun denitration medium can make full and the flue gas combine, can not down spray outward again and cause the waste, make simultaneously to mix more fully.
Drawings
FIG. 1 is a schematic sectional view of a burner of a gasification furnace with a denitration apparatus according to the present invention;
FIG. 2 is a schematic structural view of a denitration apparatus according to the present invention;
fig. 3 is a schematic structural view of the inner cone connecting the first tangential blades of the present invention.
Description of the specific structure: 1 primary air duct, 11 gas pipe, 12 primary air holes, 13 guide vanes, 2 secondary air boxes, 21 connecting plates, 22 second tangential vanes, 3 air distribution boxes, 31 double-cone nozzles, 32 inner cone cylinders, 33 outer cone cylinders, 34 first tangential vanes, 35 flange plates, 4 denitration devices, 41 material conveying pipes, 42 atomizing nozzles and 43 bending parts.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments shown in the drawings.
In the description of the present invention, it is to be understood that all references to the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
A gasifier burner with a denitration device comprises a burner body, wherein the burner body comprises a gas pipe 11, an annular air distribution box 3 and a double-cone-shaped burner 31, a first air inlet is formed in the air distribution box 3, the first air inlet can be formed in any position on the outer circular wall of the air distribution box 3 and can be communicated with the inside of the air distribution box 3 and the outside, a fan is connected through the first air inlet to provide an air source for the air distribution box 3, the double-cone-shaped burner 31 comprises an inner cone 32 and an outer cone 33, an air channel is formed between the inner cone 32 and the outer cone 33, the air distribution box 3 is connected with the right end of the double-cone-shaped burner 31 to provide the air source for the double-cone-shaped burner 31, preferably, the air distribution box 3 is connected with the double-cone-shaped burner 31 through a flange 35, and a through hole capable of communicating the air distribution box 3 with the double-cone; the left end of biconical nozzle 31 forms the air outlet, the length that outer cone 33 stretches out left is greater than the length that inner cone 32 stretches out left, gas pipe 11 is located 3 inboards of air distribution box, gas pipe 11 is used for carrying the gas, still includes denitrification facility 4, denitrification facility 4 includes conveying pipeline 41 and atomizing nozzle 42, conveying pipeline 41 is including a bending portion 43, bending portion 43 is located in the wind channel, 41 one end of conveying pipeline with atomizing nozzle 42 connects, and the other end passes outer cone 33 is connected with the denitration medium source, atomizing nozzle 42 is located inner cone 32 left side is located simultaneously outer cone 33 is inboard. It is understood that the denitration medium source of the present invention should be a denitration medium-carrying device capable of supplying denitration medium and power to the feeding pipe 41, which is a prior art, and a person skilled in the art can directly apply the prior art to the present embodiment, and the device may include a pumping system in order to ensure sufficient ejection pressure.
Specifically, the denitration device 4 is located above the inner cone 32, and the spray holes of the atomizing nozzle 42 point to the central axis of the inner cone 32.
Specifically, the outer cone cylinder 33 is provided with a through hole allowing the feed delivery pipe 41 to pass through, and a sealing ring is arranged between the through hole and the feed delivery pipe 41. The air tightness of the double-cone shaped nozzle 31 may be enhanced by providing a sealing ring, which may optionally be a sealing ring made of rubber.
Specifically, the left end of the air duct is provided with a first tangential blade 34 circumferentially distributed along the outer side of the inner cone 32, and air forms swirling air when passing through the first tangential blade 34. Set up first tangential blade 34, the flue gas is constantly rotatory towards the in-process of left output, can effectively improve the mixed effect of air and fuel, simultaneously, because rotatory flue gas, only need including awl section of thick bamboo 32 top set up a denitrification facility 4, the denitration medium is sprayed down, the flue gas is constantly rotatory, from below spun flue gas also can be owing to the rotation up shift for the spun flue gas can both contact with the denitration medium, realize abundant denitration.
Specifically, the burner body further comprises an annular secondary air box 2, a second air inlet is formed in the secondary air box 2, the setting principle of the second air inlet is the same as that of the first air inlet, the secondary air box 2 is located on the right side of the biconical burner 31, the right side of the secondary air box 2 is connected with a connecting plate 21, the burner body of the utility model can be installed on a gasification furnace through the connecting plate 21, the gas pipe 11 is located on the inner side of the secondary air box 2, and the right end of the gas pipe 11 is fixedly connected with the connecting plate 21; the air distribution box 3 is fixedly connected to the secondary air box 2, the inner side wall of the air distribution box 3 is tightly attached to the outer side wall of the secondary air box 2, a secondary air outlet is formed at the left end of the secondary air box 2, a second tangential blade 22 is arranged at the position, close to the secondary air outlet, in the secondary air box 2, and air forms rotational flow gas when passing through the second tangential blade 22.
Specifically, gas pipe 11 with leave gap formation primary air duct 1 between the secondary bellows 2, it has primary air hole 12 to open on the inner wall of secondary bellows 2, primary air hole 12 will primary air duct 1 with secondary bellows 2 intercommunication, the length that secondary bellows 2 stretched out left is greater than the length that gas pipe 11 stretched out left.
Specifically, a spiral guide vane 13 is arranged in the primary air duct, and the inner side and the outer side of the guide vane 13 are respectively fixedly connected with the gas pipe 11 and the secondary air box 2. The air forms a swirling gas when passing through the guide vanes 13.
The utility model discloses a theory of operation: when the secondary air box is used, air firstly enters the primary air channel 1 through the primary air holes 12, the air is firstly combined with fuel gas at the air outlet end of the fuel gas pipe 11 and is premixed with combustible gas to be burnt in a fuel-rich mode, then the air is fully mixed with fuel-rich mode at the second tangential blade 22 at the left end of the secondary air box 2 to be burnt in a fuel-rich mode, the unburned combustible gas is then mixed with the first tangential blade 34 in a swirling mode to be burnt in a fuel-lean mode, the combustion efficiency is fully improved, meanwhile, nitrogen oxides generated by local high temperature of flame can be avoided, and the generated nitrogen oxides can be further utilized to pass through reducing gas (CH) contained in the combustible gas4、CO、H2C) reducing the nitrogen oxides formed to N2. Set up denitrification facility 4 on biconical burner 31, utilize denitrification facility 4 with the denitration medium in spouting into the flue gas, with flue gas intensive mixing and take place the effect that nitrogen oxide in reaction reduction flue gas reaches the reduction nitrogen oxide.
The above mentioned embodiments are only preferred embodiments of the present invention, and the scope of the present invention should not be limited thereby, that is, all the simple equivalent changes and modifications made according to the claims and the description of the present invention are still included in the scope of the present invention.
Claims (7)
1. The utility model provides a gasifier nozzle with denitrification facility, includes the nozzle body, the nozzle body includes gas pipe, annular air distribution box and biconical burner, be equipped with first air intake on the air distribution box, the biconical burner includes interior cone and outer cone, interior cone with form the wind channel between the outer cone, air distribution box with the right-hand member of biconical burner is connected and is provided the wind regime for it, the left end of biconical burner forms the air outlet, the length that stretches out left of outer cone is greater than interior cone stretches out length left, the gas pipe is located air distribution box is inboard, the gas pipe is used for carrying the gas, its characterized in that: still include denitrification facility, denitrification facility includes conveying pipeline and atomizing nozzle, the conveying pipeline is including a portion of bending, the portion of bending is located in the wind channel, conveying pipeline one end with atomizing nozzle is connected, and the other end passes outer cone is connected with the denitration medium source, atomizing nozzle stretches out the exhaust vent.
2. The gasifier burner with a denitration device as claimed in claim 1, wherein: the denitration device is positioned above the inner cone, and the spray holes of the atomizing nozzles point to the central axis of the inner cone.
3. The gasifier burner with a denitration device as claimed in claim 2, wherein: the outer cone cylinder is provided with a through hole allowing the feed delivery pipe to penetrate through, and a sealing ring is arranged between the through hole and the feed delivery pipe.
4. The gasifier burner with a denitration device as set forth in claim 1 or 2, wherein: the left end of the air duct is provided with first tangential blades distributed along the circumferential direction of the outer side of the inner cone, and air forms rotational flow gas when passing through the first tangential blades.
5. The gasifier burner with a denitration device as claimed in claim 4, wherein: the burner nozzle body further comprises an annular secondary air box, a second air inlet is formed in the secondary air box, the secondary air box is located on the right side of the biconical burner nozzle, the right side of the secondary air box is connected with a connecting plate, the gas pipe is located on the inner side of the secondary air box, and the right end of the gas pipe is fixedly connected with the connecting plate; the air distribution box is fixedly connected to the secondary air box, the inner side wall of the air distribution box is tightly attached to the outer side wall of the secondary air box, a secondary air outlet is formed at the left end of the secondary air box, a second tangential blade is arranged at the position, close to the secondary air outlet, in the secondary air box, and air forms rotational flow gas when passing through the second tangential blade.
6. The gasifier burner with a denitration device as claimed in claim 5, wherein: the gas pipe with leave the gap between the secondary bellows and form a wind channel, it has a wind hole to open on the inner wall of secondary bellows, a wind hole will a wind channel with secondary bellows intercommunication, the length that secondary bellows stretched out left is greater than the length that the gas pipe stretched out left.
7. The gasifier burner with a denitration device as claimed in claim 6, wherein: spiral guide vanes are arranged in the primary air duct, and the inner side and the outer side of each guide vane are fixedly connected with the gas pipe and the secondary air box respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921351254.2U CN210711425U (en) | 2019-08-19 | 2019-08-19 | Gasifier nozzle with denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921351254.2U CN210711425U (en) | 2019-08-19 | 2019-08-19 | Gasifier nozzle with denitration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210711425U true CN210711425U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921351254.2U Active CN210711425U (en) | 2019-08-19 | 2019-08-19 | Gasifier nozzle with denitration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210711425U (en) |
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2019
- 2019-08-19 CN CN201921351254.2U patent/CN210711425U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Gasifier burner with denitration device Effective date of registration: 20230113 Granted publication date: 20200609 Pledgee: Bank of Guangzhou Co.,Ltd. paper bank sub branch Pledgor: GUANGZHOU HUIDI NEW ENERGY TECHNOLOGY Co.,Ltd. Registration number: Y2023980031029 |