CN206082103U - Built -in SNCR spray gun - Google Patents
Built -in SNCR spray gun Download PDFInfo
- Publication number
- CN206082103U CN206082103U CN201621014932.2U CN201621014932U CN206082103U CN 206082103 U CN206082103 U CN 206082103U CN 201621014932 U CN201621014932 U CN 201621014932U CN 206082103 U CN206082103 U CN 206082103U
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- cooling medium
- evaporative cooling
- sncr
- built
- spray gun
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Abstract
The utility model provides a built -in SNCR spray gun, light in weight, length is unrestricted, and simple structure can avoid the degree of disturbing of spray gun to warp. It inserts the SNCR spray gun body in the boiler stove in including follow boiler oven, sets up the export of evaporation cooling medium and the evaporation cooling medium inlet that are linked together on SNCR spray gun body, is the clearance cover and establishes a plurality of pipe straps on SNCR spray gun body to and the endless is low -boiling in 100 DEG C evaporation cooling medium between evaporation cooling medium export and evaporation cooling medium inlet, the pipe strap outside fix on the stove internal heating surface that corresponds, the evaporation cooling medium that gets into the evaporation cooling medium inlet is the liquid phase, and the evaporation cooling medium of outflow evaporation cooling medium export is the vapour phase. On being fixed in the stove internal heating surface through the pipe strap with it to avoid the restriction to spray gun length, set up the clearance between pipe strap and the spray gun, realized the spray gun free expansion that is heated.
Description
Technical field
The utility model is related to the spray gun in SNCR, specially built-in SNCR spray guns.
Background technology
SNCR denitration technique is that one kind proper temperature region in boiler sprays into working medium (- NH2Reducing agent), by NOx in stove
The method of denitration of interior reduction.At present SNCR spray guns length is less than 8 meters, using scalable design.When putting into operation, will be sprayed by executing agency
Rifle is from boiler setting pre-drilled cavity insertion stove.During stoppage in transit spray gun is hauled out by executing agency.Due to 1000 DEG C of boiler in-furnace temperature
Left and right, it is therefore desirable to cool down spray gun.Current cooling means is, as cooling medium, to be illustrated in fig. 1 shown below using fresh water (FW).It is existing
In having technology, for Large-sized Coal-fired Power group, boiler width reaches more than 30 meters, and current spray gun structure is difficult to meet and requires, such as
Fruit lengthens spray gun on the basis of current technology, and the problem brought is the structure design that spray gun weight is big, deflection deformation is big, flexible
Also the volume of boiler itself is significantly increased, it is difficult to meet technological requirement.
Utility model content
For problems of the prior art, the utility model provides built-in SNCR spray guns, and lightweight, length is not received
Limit, simple structure, the degree of disturbing that can avoid spray gun deforms.
The utility model is to be achieved through the following technical solutions：
Built-in SNCR spray guns, including the SNCR gun bodies inserted from boiler wall in Boiler Furnace, are arranged on SNCR
The evaporative cooling medium outlet being connected on gun body and evaporative cooling medium entrance, in gap SNCR gun bodies are set in
On multiple pipe clamps, and evaporative cooling medium outlet and evaporative cooling medium entrance between circulate boiling point be less than 100 DEG C
Evaporative cooling medium；Described pipe clamp outside is fixed on corresponding stove internal heating surface；Into evaporative cooling medium entrance
Evaporative cooling medium is liquid phase, and the evaporative cooling medium for flowing out evaporative cooling medium outlet is vapour phase.
Preferably, also including the heat exchanger being connected in turn between evaporative cooling medium outlet and evaporative cooling medium entrance
With evaporative cooling medium pump；Cooling water nozzle and heat exchange coil are disposed with from top to bottom in heat exchanger；Heat exchange coil enters
Mouth connection evaporative cooling medium outlet, the input port of outlet connection evaporative cooling medium pump；Evaporative cooling medium is in evaporation cooling
It is vapour phase between media outlet and heat exchanger, evaporative cooling medium is liquid phase between heat exchanger and evaporative cooling medium entrance.
Further, evaporative cooling medium storage tank is provided between heat exchanger and evaporative cooling medium pump.
Further, heat exchanger top is provided with cooling blower.
Further, the input of cooling water nozzle is provided with cool water shower pump, the input connection of cool water shower pump
Cooling water outlet in heat exchanger.
Preferably, SNCR gun bodies are fixed on boiler wall.
Preferably, SNCR gun bodies are fixedly connected respectively by pipe clamp with each stove internal heating surface.
Compared with prior art, the utility model has following beneficial technique effect：
The built-in SNCR spray guns of the utility model, are fixed on stove internal heating surface by pipe clamp, right so as to avoid
The restriction of spray gun length, arranges gap between pipe clamp and spray gun, realize that spray gun is heated free wxpansion.Because built-in spray gun passes through
Pipe clamp is fixed on stove internal heating surface, coordinate using evaporation cooling agent cooled down, and evaporative cooling medium boiling point 100 DEG C with
Under, the latent heat of vaporization is big, and its evaporation cooling capacity is 30 times of water-cooled such that it is able to mitigate spray gun weight 10%；Fixation simultaneously sets
The SNCR gun bodies put decrease the mechanism to its shrinkage operation and arrange, and are greatly reduced the overall moving body of boiler
Product, the step of when reducing boiler attendance and operation.
Further, by being used for water-cooled, to evaporating cooling agent cooling, to instead of the direct drop to SNCR gun bodies
Temperature, on the one hand saves the consumption of cooling water, on the other hand enables evaporation cooling agent that profit is circulated in down cycles system
With, so that the utility model adopts two kinds of cooling mediums, relative to the SNCR spray guns only with cooling water, due to heat exchanger
In shower water phase-change heat-exchange, the part without evaporation can recycle, and only with the SNCR spray gun cooling waters of cooling water
Do not undergo phase transition, therefore the water consume of SNCR spray guns described in the utility model reduces by more than 95%.
Description of the drawings
Fig. 1 is the structural representation of SNCR spray guns in prior art.
Fig. 2 is the structural representation of the SNCR spray guns described in the utility model example.
Fig. 3 is the scheme of installation of the SNCR spray guns described in the utility model example.
Fig. 4 is the mounting structure enlarged diagram of the SNCR spray guns described in the utility model example.
In figure：Boiler wall 1, SNCR gun bodies 2, evaporative cooling medium outlet 3, evaporative cooling medium entrance 4, evaporation
Cooling medium pump 6, evaporative cooling medium storage tank 7, heat exchanger 8, pipe clamp 9, stove internal heating surface 10.
Specific embodiment
The utility model is described in further detail with reference to specific embodiment, described is to the utility model
Explanation rather than restriction.
The utility model as shown in Fig. 2 it include from boiler wall 1 insert Boiler Furnace in SNCR gun bodies 2,
The evaporative cooling medium outlet 3 and evaporative cooling medium entrance 4 being connected is provided with SNCR gun bodies 2；It is arranged in gap
Multiple pipe clamps 9 on SNCR gun bodies 2, and follow between evaporative cooling medium outlet 3 and evaporative cooling medium entrance 4
Evaporative cooling medium of the boiling point of ring less than 100 DEG C；The outside of pipe clamp 9 is fixed on corresponding stove internal heating surface 10；The He of pipe clamp 9
Gap between SNCR gun bodies 2 ensure that SNCR gun bodies 2 be heated after free wxpansion；Into evaporative cooling medium
The evaporative cooling medium of entrance 4 is liquid phase, and the evaporative cooling medium for flowing out evaporative cooling medium outlet 3 is vapour phase.
Wherein, the utility model also include be connected in turn evaporative cooling medium outlet 3 and evaporative cooling medium entrance 4 it
Between heat exchanger 8 and evaporative cooling medium pump 6, recycle for carrying out cooling to evaporative cooling medium；From upper in heat exchanger 8
Cooling water nozzle and heat exchange coil are disposed with；The entrance connection evaporative cooling medium outlet 3 of heat exchange coil, outlet connects
Connect the input port of evaporative cooling medium pump 6；Evaporative cooling medium is gaseous state between evaporative cooling medium outlet 3 and heat exchanger 8,
Evaporative cooling medium is liquid between heat exchanger 8 and evaporative cooling medium entrance 4.
Wherein, evaporative cooling medium storage tank 7 is provided between heat exchanger 8 and evaporative cooling medium pump 6.Heat exchanger 8 is preferred
Employing air-cooled heat exchanger, its top be provided with cooling blower.The input of cooling water nozzle is provided with cool water shower pump,
Cooling water outlet in the input connection heat exchanger of cool water shower pump.
As shown in figure 3, SNCR gun bodies 2 are fixed on boiler wall 1, as shown in figure 4, SNCR gun bodies 2 and stove
Internal heating surface 10 is vertical setting, and each stove internal heating surface 10 that SNCR gun bodies 2 are passed through respectively by pipe clamp 9 with it
It is fixedly connected.
The utility model adopts evaporative cooling medium Jing evaporative cooling medium pump 6 of the boiling point less than 100 DEG C with liquid phase entrance
The SNCR gun bodies 2 being fixed on by pipe clamp 9 on stove internal heating surface 10, SNCR gun bodies 2 are left after heat absorption with vapour phase, are entered
In entering heat exchanger 8, under shower water and cooling wind action, temperature is down to after room temperature and returns to evaporative cooling medium with liquid phase state
In storage tank 7, a circulation is completed.Unevaporated part recycles in heat exchanger 8 in shower water.
Claims (7)
1. built-in SNCR spray guns, it is characterised in that include the SNCR gun bodies in insertion Boiler Furnace from boiler wall (1)
(2) evaporative cooling medium outlet (3) and evaporative cooling medium entrance (4) being connected on SNCR gun bodies (2), is arranged on,
The multiple pipe clamps (9) being set in gap on SNCR gun bodies (2), and export (3) in evaporative cooling medium and evaporate cold
But evaporative cooling medium of the boiling point for circulating between medium inlet (4) less than 100 DEG C；
Described pipe clamp (9) outside is fixed on corresponding stove internal heating surface (10)；Into the steaming of evaporative cooling medium entrance (4)
It is liquid phase to send out cooling medium, and the evaporative cooling medium for flowing out evaporative cooling medium outlet (3) is vapour phase.
2. built-in SNCR spray guns according to claim 1, it is characterised in that be also situated between including being connected to evaporation cooling in turn
Matter exports the heat exchanger (8) and evaporative cooling medium pump (6) between (3) and evaporative cooling medium entrance (4)；In heat exchanger (8)
Cooling water nozzle and heat exchange coil are disposed with from top to bottom；Entrance connection evaporative cooling medium outlet (3) of heat exchange coil,
The input port of outlet connection evaporative cooling medium pump (6)；Evaporative cooling medium exports (3) and heat exchanger in evaporative cooling medium
(8) it is vapour phase between, evaporative cooling medium is liquid phase between heat exchanger (8) and evaporative cooling medium entrance (4).
3. built-in SNCR spray guns according to claim 2, it is characterised in that heat exchanger (8) and evaporative cooling medium pump
(6) evaporative cooling medium storage tank (7) is provided between.
4. built-in SNCR spray guns according to claim 2, it is characterised in that heat exchanger (8) top is provided with cooling wind
Machine.
5. built-in SNCR spray guns according to claim 2, it is characterised in that the input of cooling water nozzle is provided with cold
But Water spray pump, cooling water outlet in the input connection heat exchanger of cool water shower pump.
6. built-in SNCR spray guns according to claim 1, it is characterised in that SNCR gun bodies (2) are fixed on boiler
On furnace wall (1).
7. built-in SNCR spray guns according to claim 1, it is characterised in that SNCR gun bodies (2) are by pipe clamp
(9) it is fixedly connected with each stove internal heating surface (10) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621014932.2U CN206082103U (en) | 2016-08-30 | 2016-08-30 | Built -in SNCR spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621014932.2U CN206082103U (en) | 2016-08-30 | 2016-08-30 | Built -in SNCR spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206082103U true CN206082103U (en) | 2017-04-12 |
Family
ID=58477670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621014932.2U Active CN206082103U (en) | 2016-08-30 | 2016-08-30 | Built -in SNCR spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206082103U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106215647A (en) * | 2016-08-30 | 2016-12-14 | 中国华能集团公司 | A kind of built-in SNCR spray gun |
| CN108672229A (en) * | 2018-05-31 | 2018-10-19 | 浙江懿康医疗科技有限公司 | A kind of glue rifle nozzle with cooling effect |
-
2016
- 2016-08-30 CN CN201621014932.2U patent/CN206082103U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106215647A (en) * | 2016-08-30 | 2016-12-14 | 中国华能集团公司 | A kind of built-in SNCR spray gun |
| CN106215647B (en) * | 2016-08-30 | 2019-05-17 | 中国华能集团公司 | A kind of built-in SNCR spray gun |
| CN108672229A (en) * | 2018-05-31 | 2018-10-19 | 浙江懿康医疗科技有限公司 | A kind of glue rifle nozzle with cooling effect |
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