CN206027980U - Forced air cooling denitration spray gun - Google Patents
Forced air cooling denitration spray gun Download PDFInfo
- Publication number
- CN206027980U CN206027980U CN201621042141.0U CN201621042141U CN206027980U CN 206027980 U CN206027980 U CN 206027980U CN 201621042141 U CN201621042141 U CN 201621042141U CN 206027980 U CN206027980 U CN 206027980U
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- cooling gas
- nozzle base
- barral
- gun
- spray gun
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Abstract
The utility model relates to a waste gas treatment equipment technical field especially relates to a forced air cooling denitration spray gun, including the gas -liquid mixture body, with gas -liquid mixture body sealing connection's barral of a gun, be provided with nozzle base on the barral of a gun, the last nozzle of installing of nozzle base, the outside cover of barral of a gun are equipped with the cooling gas pipe, there is a protective case outside of cooling gas pipe through the fixed cover fixed mounting of sleeve pipe, the cooling gas pipe is equipped with the cooling gas entry, is equipped with the round hole on cooling gas pipe and the corresponding outer wall of nozzle base, is equipped with the clearance between the internal diameter of round hole and the nozzle base external diameter, through at cooling gas pipe externally mounted protective case, realized the holistic protection of whole spray gun to the anti wearability of spray gun has been improved, simultaneously, cooling gas gets into the inner chamber of cooling gas pipe from the cooling gas entry to along barral of a gun outer wall interstitial flow to each nozzle base with the cooling gas inside pipe wall, again from the clearance blowout of nozzle base external diameter with the round hole internal diameter, thereby realize the whole purpose of cooling down of going on of spray gun.
Description
Technical field
This utility model is related to waste gas pollution control and treatment equipment technical field, more particularly to a kind of air-cooled denitration spray gun.
Background technology
CFBB, coal-burning boiler and gas fired-boiler are widely used in steam power plant and garbage burning factory etc. at present
Industry, and in flue gas, usually contain substantial amounts of oxynitride such as NO, NO2If these oxynitride are directly discharged to greatly
In gas, the very strong acid rain of meeting causing corrosion, therefore flue gas all has to pass through denitration process before discharge.
National environmental protection portion in 2015 requires that ultra-clean discharge is carried out in key area, and all thermoelectricitys put into operation unit oxynitride
Discharge capacity need to reach 50mg/Nm3, this denitrating flue gas to all boilers is processed has higher requirement again.So-called denitrating flue gas
Technology, mainly including SCR technology (SCR), SNCR technology (SNCR), selective non-catalytic
Reduction and SCR United Technologies (SNCR-SCR) and other gas denitrifying technologies.
However, in SCR techniques, using SCR spray guns, being installed due to spray gun and requiring especially high, spray for the selection of temperature
The installation site of rifle is determined according to temperature：Using urea liquid, as far as possible installation site is scheduled on 950 DEG C ± 50 DEG C of temperature
In the range of degree；Using ammonia spirit, as far as possible installation site is scheduled on 900 DEG C ± 50 DEG C of scope, typically must assure that 0.5
In response time more than second, degree of mixing must be got well.Due to spray gun operating temperature range it is higher, and at boiler flue rear portion
The flue gas flow rate of the bending angle part before economizer is all in 28m/s, while carrying substantial amounts of dust and quartz sand in flue gas secretly
Grain, the part directly goed deep in stove to spray gun wash away, therefore very severe to the abrasion of spray gun.Additionally, used in SCR techniques
Spray gun, the bending angle part before the economizer of boiler flue rear portion, temperature is in the range of 900 DEG C ± 50 DEG C, and needs
Want liquid mist be covered with the section of flue, it is necessary to redesign a kind of lengthening can long-time work at high temperature it is many
Shower nozzle spray gun, therefore, there is higher requirement to the cooling measure of spray gun.
Utility model content
This utility model provides a kind of air-cooled denitration spray gun, to solve the mill of spray gun present in existing gas denitrifying technology
Damage problem serious, that cooling efficiency is low.
In order to solve above-mentioned technical problem, this utility model provides following technical scheme：
A kind of air-cooled denitration spray gun, it is characterised in that include：Gas-liquid mixed body and gas-liquid mixed body sealing
The barral of a gun of connection, is provided with nozzle base, is provided with nozzle on the nozzle base on the barral of a gun；Wherein,
Through hole in the nozzle and nozzle base is connected with the space in the barral of a gun；
The outside of the barral of a gun is arranged with cooling gas pipe, and the outside of the cooling gas pipe is provided with protection sleeve pipe, institute
State the protection sleeve pipe outer wall corresponding with nozzle base and be provided with through hole；
The protective case Gutron crosses the outside that sleeve pipe fixed cover is fixedly installed in the cooling gas pipe；
The outer wall of the barral of a gun is provided with gap with the inwall of the cooling gas pipe；
The left end of the cooling gas pipe is sealedly connected with cooling gas inlet；
The cooling gas pipe outer wall corresponding with nozzle base is provided with circular hole, the internal diameter of the circular hole and the spray
Gap is provided between the external diameter of gonys seat, and the gap is 1mm.
Alternatively, the protection sleeve pipe includes the carborundum sleeve pipe that multiple combinations are installed, and adjacent carborundum sleeve pipe passes through
Buckle structure connects.
Alternatively, the nozzle base includes being welded in the nozzle base I of the barral of a gun end, is welded in the barral of a gun different
The nozzle base II of side.
Alternatively, the quantity of the nozzle base I is one, the quantity of the nozzle base II be two or four or
Person six, and the relative outsides for being welded in the barral of a gun of each two nozzle base II.
Alternatively, the barral of a gun is threadedly coupled by Taper Pipe sealing with gas-liquid mixed body.
Alternatively, the gas-liquid mixed body also include the compressed air inlet being tightly connected with gas-liquid mixed body and
Reducing agent entrance, the compressed air inlet, reducing agent entrance are connected with the intrinsic space of gas-liquid mixed.
Alternatively, the barral of a gun, cooling gas pipe, the axis of protection sleeve pipe are respectively positioned on same straight line.
Alternatively, the spray gun is made using stainless steel pipe.
Alternatively, the carborundum sleeve pipe is made using nitrogen connection carbofrax material.
The technical scheme that this utility model is provided includes following beneficial effect：By installing protection outside cooling gas pipe
Sleeve pipe, and protective case Gutron crosses the outside that sleeve pipe fixed cover is fixedly installed in the cooling gas pipe, when in flue gas, entrainment is a large amount of
Dust and quartz sand particle, when directly stretching into the part in stove to spray gun and washing away, dust and quartz particles are to spray gun
Impulsive force weakens to the impulsive force of barral of a gun through protection sleeve pipe, so as to reduce to the overall abrasion of spray gun, improves spray gun
It is anti-wear；Meanwhile, cooling gas from cooling gas inlet enter cooling gas pipe inner chamber, and the outer wall along the barral of a gun with
The gap of the inwall of the cooling gas pipe flow to each nozzle base, then the gap from nozzle base external diameter with bore inner diameter is sprayed
Go out, cooling gas are flowed out by entering from cooling gas inlet, from the gap of the internal diameter and nozzle base external diameter of circular hole, so as to reality
The now purpose integrally lowered the temperature by spray gun.
It should be appreciated that the general description of the above and detailed description hereinafter are only exemplary and explanatory, not
The disclosure can be limited.
Description of the drawings
During accompanying drawing herein is merged in description and the part of this specification is constituted, show and meet of the present utility model
Embodiment, and be used for explaining principle of the present utility model together with description.
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, for ordinary skill people
For member, without having to pay creative labor, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is a kind of generalized section of air-cooled denitration spray gun of this utility model.
Fig. 2 is the close-up schematic view of dotted portion in Fig. 1.
Description of reference numerals：1st, gas-liquid mixed body；2nd, barral of a gun；3rd, cooling gas pipe；4th, sleeve pipe fixed cover；5th, protective case
Pipe；6th, nozzle；7th, nozzle base；8th, circular hole；1-1, compressed air inlet；1-2, reducing agent entrance；3-1, cooling gas inlet.
Specific embodiment
In order that those skilled in the art more fully understand the technical scheme in this utility model, below in conjunction with this practicality
Accompanying drawing in new embodiment, is clearly and completely described to the technical scheme in this utility model embodiment；Obviously, institute
The embodiment of description is only a part of embodiment of the present utility model, rather than the embodiment of whole.Based in this utility model
Embodiment, the every other embodiment obtained under the premise of creative work is not made by those of ordinary skill in the art,
The scope of this utility model protection should all be belonged to.
At present, because of technological requirement, according to boiler specification, the effective length of spray gun between three to six meters, on each spray gun
Need three to five nozzles of installation even more many；Therefore, spray gun needs good with high temperature resistant, wear-resistant, corrosion-resistant, bending strength
Characteristic.In this utility model, by installing protection sleeve pipe 5 outside cooling gas pipe 3, and protect sleeve pipe 5 solid by sleeve pipe
Surely set 4 is fixedly installed in the outside of the cooling gas pipe 3, when substantial amounts of dust and quartz sand particle is carried in flue gas secretly, directly
When stretching into the part in stove to spray gun and washing away, dust and quartz particles are to the impulsive force of spray gun through protection sleeve pipe 5 to rifle
The impulsive force of bar 2 weakens, and so as to reduce to the overall abrasion of spray gun, improves the anti-wear of spray gun；Meanwhile, cooling gas
The inner chamber of cooling gas pipe 3, and the outer wall along the barral of a gun 2 and the cooling gas pipe 3 are entered from cooling gas inlet 3-1
The gap of inwall flow to each nozzle base 7, then the gap from 7 external diameter of nozzle base with circular hole 8 sprays, and cooling gas are by from cold
But gas access 3-1 is entered, is flowed out from the gap of 7 external diameter of internal diameter and nozzle base of circular hole 8, so as to realize that spray gun is integrally entered
The purpose of row cooling.
In order that those skilled in the art more fully understands this utility model scheme, below in conjunction with the accompanying drawings and embodiment pair
This utility model is described in further detail.
As shown in figure 1, a kind of generalized section of air-cooled denitration spray gun, including：Gas-liquid mixed body 1, and the gas-liquid
The barral of a gun 2 that hybrid ontology 1 is tightly connected, is provided with nozzle base 7, is provided with nozzle on the nozzle base 7 on the barral of a gun 2
6；Wherein,
Through hole in the nozzle 6 and nozzle base 7 is connected with the space in the barral of a gun 2；
The outside of the barral of a gun 2 is arranged with cooling gas pipe 3, and the outside of the cooling gas pipe 3 is provided with protection sleeve pipe
5, the protection sleeve pipe 5 outer wall corresponding with nozzle base 7 is provided with through hole；
The protection sleeve pipe 5 is fixedly installed in the outside of the cooling gas pipe 3 by sleeve pipe fixed cover 4；
The outer wall of the barral of a gun 2 is provided with gap with the inwall of the cooling gas pipe 3；
The left end of the cooling gas pipe 3 is sealedly connected with cooling gas inlet 3-1；
The cooling gas pipe 3 outer wall corresponding with nozzle base 7 is provided with circular hole 8, the internal diameter of the circular hole 8 and institute
Gap is provided between the external diameter for stating nozzle base 7, and the gap is 1mm.
Preferably, the protection sleeve pipe 5 includes the carborundum sleeve pipe that multiple combinations are installed, and adjacent carborundum sleeve pipe passes through
Buckle structure connects；The carborundum sleeve pipe is made using nitrogen connection carbofrax material, high temperature resistant, corrosion-resistant, wear-resisting, and will not
Because high temperature water attack is ftractureed, spray gun cavity and nozzle 6 can be effectively protected, improve service life；Meanwhile, protection sleeve pipe 5 is multiple
Carborundum sleeve pipe is by the combinative structure that snaps connection, it is easy to install, detachable maintaining, replacing.
Preferably, the nozzle base 7 includes being welded in the nozzle base I of 2 end of the barral of a gun, is welded in the barral of a gun
The nozzle base II of 2 heteropleurals；The quantity of the nozzle base I is one, and the nozzle base I sprays in the horizontal direction, described
The quantity of nozzle base II is two or four or six, and each two nozzle base II is welded in the barral of a gun 2 relatively
Outside, the nozzle base II is mounted opposite in 180 degree on the barral of a gun 2, and sprays droplet to both sides, makes droplet as far as possible
Space in flue is covered with.
Preferably, the barral of a gun 2 is threadedly coupled by Taper Pipe sealing with gas-liquid mixed body 1.
Preferably, the gas-liquid mixed body 1 also includes the compressed air inlet 1- being tightly connected with gas-liquid mixed body 1
1 and reducing agent entrance 1-2, the compressed air inlet 1-1, reducing agent entrance 1-2 with gas-liquid mixed body 1 in space
It is connected, the compressed air inlet 1-1, reducing agent entrance 1-2 are threadedly connected with gas-liquid mixed body 1.
Preferably, the barral of a gun 2, cooling gas pipe 3, the axis of protection sleeve pipe 5 are respectively positioned on same straight line, barral of a gun 2,
The design of cooling gas pipe 3, protection 5 three's coaxial package of sleeve pipe, when substantial amounts of dust and quartz sand particle is carried in flue gas secretly, directly
When connecing the part stretched into spray gun in stove and washing away, dust and quartz particles are to the impulsive force of spray gun through protection sleeve pipe 5, cold
But gas tube 3, barral of a gun 2 weaken successively, so as to reduce to the overall impact of spray gun, improve the overall bending strength of spray gun,
Protect sleeve pipe 5 to reduce the abrasion of dust and quartz particles to spray gun simultaneously, improve the anti-wear of spray gun.
Preferably, the spray gun is made using resistant to elevated temperatures stainless steel pipe.
The air-cooled denitration spray gun, the number for installing nozzle 6 are divided into：FLCPQ-3 (three nozzles), FLCPQ-5 (five sprays
Mouth), FLCPQ-7 (seven nozzles) three it is serial, each series according to install nozzle 6 flow and Sprayable be divided into ten rule
Lattice.For example, FLCPQ-3 series have FLCPQ-3/F20 (wherein, F is fan-spray, 20 20 liters of flows for representing single-nozzles/
When), five specifications such as FLCPQ-3/F40, FLCPQ-3/F60, FLCPQ-3/F90, FLCPQ-3/F150；FLCPQ-3 series is also
Have FLCPQ-3/S20 (wherein, S is solid cone type spray, and 20 represent 20 ls/h of the flow of single-nozzles), FLCPQ-3/S40,
Five specifications such as FLCPQ-3/S60, FLCPQ-3/S90, FLCPQ-3/S150.
The air-cooled denitration spray gun, specifically when in use, the form of the quantity of nozzle 6, the flow of nozzle 6 and nozzle 6 can
To be chosen according to boiler specification, reducing agent can be urea liquid or ammonia spirit, reducing agent from reducing agent entrance 1-2 with
The pressure of 0.3MPa enters the inner chamber of gas-liquid mixed body 1, and compressed air is then with the pressure of 0.3MPa-0.4MPa from compressed air
Entrance 1-1 enters the inner chamber of gas-liquid mixed body 1, and now, reducing agent turns to particle diameter in the inner chamber intrinsic fog of gas-liquid mixed body 1 and is
40 μm -80 μm of fine mist, aerosol flow to each nozzle base along the outer wall of barral of a gun 2 with the gap of the inwall of cooling gas pipe 3
7, the nozzle 6 then installed from nozzle base 7 sprays.
When being lowered the temperature using pressure-air cooling, cooling gas are with the pressure of 0.2MPa-0.3MPa from cooling gas inlet
3-1 enters the inner chamber of cooling gas pipe 3, and the outer wall along the barral of a gun 2 is flow to the gap of the inwall of the cooling gas pipe 3
Each nozzle base 7, then spray from the gap of the 1mm between 8 internal diameter of 7 external diameter of nozzle base and circular hole, cooling gas are by from cold
But gas access 3-1 is entered, the gap from circular hole 8 with 7 external diameter of nozzle base is flowed out, so as to realize that spray gun is integrally lowered the temperature
Purpose.
The carborundum sleeve pipe that protection sleeve pipe 5 is installed from multiple combinations, adjacent carborundum sleeve pipe are connected by buckle structure
Connect；The carborundum sleeve pipe is made using nitrogen connection carbofrax material, high temperature resistant, corrosion-resistant, wear-resisting, and will not be because of high temperature water attack
Cracking, can effectively protect spray gun cavity and nozzle 6, improve service life；Meanwhile, protection sleeve pipe 5 is multiple carborundum sleeve pipes
By the combinative structure for snapping connection, it is easy to install, detachable maintaining, replacing.
Additionally, barral of a gun 2, cooling gas pipe 3, this three of protection sleeve pipe 5 reduce whole spray using the design of coaxial package
The overall diameter of rifle, the cooling gas flowing velocity in cooling gas pipe 3 are accelerated, so the temperature of barral of a gun 2 is difficult to raise, so
Structure make the efficiency of pressure-air cooling bring up to maximum, while extending the service life of barral of a gun 2.
It should be noted that in this utility model, term " including " or its any other variant are intended to non-row
Including for his property, so that not only including those key elements including the article or equipment of a series of key elements, but also includes not having
There are other key elements being expressly recited, or also include the key element intrinsic for this article or equipment.In no more limits
In the case of system, the key element limited by sentence " including ... ", it is not excluded that in the article or equipment including the key element
Also there is other identical element.
The above is only specific embodiment of the present utility model, is made skilled artisans appreciate that or realizing this
Utility model.Various modifications to these embodiments will be apparent to one skilled in the art, institute herein
The General Principle of definition can be realized in the case of without departing from spirit or scope of the present utility model in other embodiments.
Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to and original disclosed herein
Reason and the consistent most wide scope of features of novelty.
It should be appreciated that this utility model is not limited to the accurate knot for being described above and being shown in the drawings
Structure, and various modifications and changes can be being carried out without departing from the scope.Scope of the present utility model only will by appended right
Ask to limit.
Claims (10)
1. a kind of air-cooled denitration spray gun, it is characterised in that include：Gas-liquid mixed body (1), and the gas-liquid mixed body (1)
The barral of a gun (2) being tightly connected, is provided with nozzle base (7), is provided with nozzle on nozzle base (7) on barral of a gun (2)
(6)；Wherein,
Through hole in nozzle (6) and nozzle base (7) is connected with the space in the barral of a gun (2)；
The outside of barral of a gun (2) is arranged with cooling gas pipe (3), and the outside of cooling gas pipe (3) is provided with protective case
Pipe (5), protection sleeve pipe (5) outer wall corresponding with nozzle base (7) are provided with through hole；
Protection sleeve pipe (5) is fixedly installed in the outside of cooling gas pipe (3) by sleeve pipe fixed cover (4)；
The outer wall of barral of a gun (2) is provided with gap with the inwall of cooling gas pipe (3)；
The left end of cooling gas pipe (3) is sealedly connected with cooling gas inlet (3-1)；
Cooling gas pipe (3) outer wall corresponding with nozzle base (7) is provided with circular hole (8), the internal diameter of circular hole (8)
Gap is provided with and the external diameter of the nozzle base (7) between.
2. air-cooled denitration spray gun according to claim 1, it is characterised in that described protection sleeve pipe (5) include multiple combinations
The carborundum sleeve pipe of installation, adjacent carborundum sleeve pipe are connected by buckle structure.
3. air-cooled denitration spray gun according to claim 1, it is characterised in that described nozzle base (7) include being welded in institute
The nozzle base I of barral of a gun (2) end is stated, the nozzle base II of the barral of a gun (2) heteropleural is welded in.
4. air-cooled denitration spray gun according to claim 3, it is characterised in that the quantity of the nozzle base I is, institute
The quantity for stating nozzle base II is two or four or six, and each two nozzle base II is welded in the barral of a gun relatively
(2) outside.
5. air-cooled denitration spray gun according to claim 1, it is characterised in that barral of a gun (2) and gas-liquid mixed body (1)
It is threadedly coupled by Taper Pipe sealing.
6. air-cooled denitration spray gun according to claim 1, it is characterised in that gas-liquid mixed body (1) also include with
Compressed air inlet (1-1) and reducing agent entrance (1-2) that gas-liquid mixed body (1) is tightly connected, the compressed air enter
Mouth (1-1), reducing agent entrance (1-2) are connected with the space in gas-liquid mixed body (1).
7. air-cooled denitration spray gun according to claim 1, it is characterised in that barral of a gun (2), cooling gas pipe (3), protect
The axis of protecting pipe (5) is respectively positioned on same straight line.
8. air-cooled denitration spray gun according to claim 1, it is characterised in that the spray gun is made using stainless steel pipe.
9. air-cooled denitration spray gun according to claim 2, it is characterised in that the carborundum sleeve pipe is using nitrogen connection carbonization
Silicon materials are made.
10. air-cooled denitration spray gun according to claim 1, it is characterised in that the internal diameter of circular hole (8) and the nozzle
Gap between the external diameter of base (7) is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621042141.0U CN206027980U (en) | 2016-09-08 | 2016-09-08 | Forced air cooling denitration spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621042141.0U CN206027980U (en) | 2016-09-08 | 2016-09-08 | Forced air cooling denitration spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206027980U true CN206027980U (en) | 2017-03-22 |
Family
ID=58299380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621042141.0U Expired - Fee Related CN206027980U (en) | 2016-09-08 | 2016-09-08 | Forced air cooling denitration spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206027980U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112206941A (en) * | 2020-10-26 | 2021-01-12 | 陕西秦渭绿邦环保科技有限公司 | Efficient mixing spray gun and application |
| WO2022110803A1 (en) * | 2020-11-26 | 2022-06-02 | 中广核工程有限公司 | Flue gas treatment system for hazardous waste incineration, and flue gas treatment method for hazardous waste incineration |
-
2016
- 2016-09-08 CN CN201621042141.0U patent/CN206027980U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112206941A (en) * | 2020-10-26 | 2021-01-12 | 陕西秦渭绿邦环保科技有限公司 | Efficient mixing spray gun and application |
| WO2022110803A1 (en) * | 2020-11-26 | 2022-06-02 | 中广核工程有限公司 | Flue gas treatment system for hazardous waste incineration, and flue gas treatment method for hazardous waste incineration |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20210908 |