CN206152615U - Fluidized bed boiler denitrification facility - Google Patents
Fluidized bed boiler denitrification facility Download PDFInfo
- Publication number
- CN206152615U CN206152615U CN201620637024.2U CN201620637024U CN206152615U CN 206152615 U CN206152615 U CN 206152615U CN 201620637024 U CN201620637024 U CN 201620637024U CN 206152615 U CN206152615 U CN 206152615U
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- China
- Prior art keywords
- denitration
- spray gun
- fluidized
- shower nozzle
- pump
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- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
The utility model discloses a fluidized bed boiler denitrification facility, it includes denitration agent storage tank, denitration pump, spray gun, air compression device, the spray gun includes the rifle body and cooling tube, and the cooling tube suit is in the outside of the rifle body, and the rifle body is the tubulose, and the shower nozzle is installed to the one end of the rifle body, is provided with trachea and denitration pipe on the pipe wall of the rifle body, installs the forced air cooled tube on the cooling tube, and on trachea and forced air cooled tube all were connected to air compression device, denitration agent storage tank was connected to the denitration pipe through the denitration pump, the spray gun is installed on the cyclone's of fluidized bed boiler intake flues's the lateral wall, the shower nozzle is in intake flues and surpass intake flues's inner wall, be provided with flow control valve on the trachea. The utility model discloses in utilize compressed air to make the shower nozzle of spray gun keep under the uniform temperature, make the shower nozzle can surpass intake flues's inner wall, can have great diffusing surface by shower nozzle spun denitration agent, carry out abundant contact and reaction with nitrogen oxide in the flue gas.
Description
Technical field
The utility model is related to a kind of fluidized-bed combustion boiler denitrification apparatus.
Background technology
The denitration of current fluidized-bed combustion boiler, generally arranges spray gun, using spray gun using in cyclone inlet flue
Denitrfying agent penetrating flue is reacted with the nitrogen oxides in flue gas, generation nitrogen and water, denitrfying agent typically adopts aqua,
Directly denitrfying agent is sprayed in flue with spray gun, because the dispersion effect of shower nozzle is effective, the denitrfying agent of penetrating can only be distributed in spray
The exit of rifle, denitration effect is affected.Further, since the temperature in flue is higher, in order to prevent spray gun at high temperature by
Burn out, the outlet of spray gun is generally located in the furnace wall of boiler, and this further have impact on the inside that denitrfying agent enters into flue, take off
Nitre effect is restricted.
Utility model content
To solve the above problems, the utility model provides a kind of fluidized-bed combustion boiler denitrification apparatus, it include denitrfying agent storage tank,
Denitration pump, spray gun, blowing plant；Spray gun includes gun body and cooling tube, and cooling tube is sleeved on the outside of gun body, and gun body is in pipe
Shape, one end of gun body is provided with shower nozzle, and tracheae and denitration pipe are provided with the tube wall of gun body, is provided with cooling tube air-cooled
Pipe, tracheae and forced air cooled tube are all connected on blowing plant, and denitrfying agent storage tank Jing denitration pumps are connected to denitration pipe；Spray gun is installed
On the side wall of the inlet air stack of the cyclone separator of the fluidized-bed combustion boiler, shower nozzle is towards in inlet air stack and beyond air inlet cigarette
The inwall in road；Flow control valve is provided with tracheae.
Further, the shower nozzle of the spray gun exceedes the inwall 5-15mm of the inlet air stack of cyclone separator.
Further, the motor of the denitration pump is inverter motor.
Further, fluidized-bed combustion boiler denitrification apparatus, also including the nitrogen oxides detector and control device being connected with each other, nitrogen
Oxide detector is installed on the flue of fluidized-bed combustion boiler；
The control device includes central processing unit, denitration pump control unit and pneumatics control unit；Wherein：
Central processing unit, receives the data of nitrogen oxides detector transmission, and the data and preset value is compared, root
Control instruction is sent according to comparative result, the co-ordination of denitration pump control unit and pneumatics control unit is completed；
Denitration pump control unit, receives the control of central processing unit, the rotating speed control of the motor to denitration pump is completed, to adjust
The output quantity of whole denitration pump；
Pneumatics control unit, receives the control of central processing unit, completes the control to the flow control valve on tracheae.
Further, central processing unit adopts 32 PLCs.
The spray gun that the utility model is adopted is provided with cooling tube, and cooling tube is connected on blowing plant, using pressure
Contracting air makes the shower nozzle of spray gun keep at a certain temperature, alloing shower nozzle beyond the inwall of inlet air stack, is sprayed by shower nozzle
Denitrfying agent can have larger diffusingsurface, can sufficiently be contacted with the nitrogen oxides in flue gas, and nitrogen oxides is decomposed into
Harmless material.After using control device, the automation to denitration work is capable of achieving, reaches the nitrogen oxides in boiler smoke
Discharge standard.
Description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the present utility model.
Fig. 2 is the structure diagram of spray gun in the utility model.
Specific embodiment
Refering to Fig. 1 and Fig. 2, a kind of fluidized-bed combustion boiler denitrification apparatus, it include denitrfying agent storage tank 6, denitration pump 7, spray gun 3,
Blowing plant 5；Spray gun 3 includes gun body 34 and cooling tube 32, and cooling tube 32 is sleeved on the outside of gun body 34, and gun body is in pipe
Shape, one end of gun body 34 is provided with shower nozzle 31, tracheae 35 and denitration pipe 36 is provided with the tube wall of gun body 34, on cooling tube 32
Forced air cooled tube 33 is installed, the Jing pipelines 8 of tracheae 35 are connected on blowing plant 5, and forced air cooled tube is connected to compression also by pipeline
On air assembly, the import of the outlet connection denitration pump 7 of denitrfying agent storage tank 6, the outlet of denitration pump 7 is connected to de- by pipeline 9
Nitre pipe 36；Spray gun 3 is arranged on the side wall 10 of the inlet air stack 4 of the cyclone separator 2 of the fluidized-bed combustion boiler, and shower nozzle direction is entered
In gas flue and beyond the inwall of inlet air stack；Flow control valve is provided with tracheae.
In the present embodiment, the shower nozzle of spray gun exceedes the inwall 15mm of the inlet air stack of cyclone separator.And denitration pump
Motor be inverter motor, in order to regulate and control the rotating speed of denitration pump.
For the denitration of accuracy controlling boiler smoke, in the present embodiment, the nitrogen oxides detection being connected with each other is also provided with
Instrument and control device, nitrogen oxides detector is installed on the flue of fluidized-bed combustion boiler.
The control device includes central processing unit, denitration pump control unit and pneumatics control unit；Wherein：Central authorities are processed
Device adopts 32 PLCs, for receiving the data of nitrogen oxides detector transmission, and to the data and preset value
It is compared, control instruction is sent according to comparative result, completes the co-ordination of denitration pump control unit and pneumatics control unit；
Denitration pump control unit, receives the control of central processing unit, the rotating speed control of the motor to denitration pump is completed, to adjust denitration pump
Output quantity；Pneumatics control unit, receives the control of central processing unit, completes the control to the flow control valve on tracheae.
When the utility model runs, the flue gas from the body of heater 1 of boiler out enters into whirlwind point through inlet air stack
From device 2, flue gas exits into subsequent processing from the top of cyclone separator after separation, and flue gas is through inlet air stack
When, being mixed with the denitrfying agent of the shower nozzle from spray gun, the nitrogen oxides in flue gas is reacted with denitrfying agent, makes nitrogen oxides
It is converted into harmless material.
Nitrogen oxides detector is detected to the amount of nitrogen oxides in flue gas, and detection data is sent to into centre
Reason device, central processing unit is compared detection data with preset value, according to comparative result, sends instruction, controls denitration pump
Unit and pneumatics control unit are adjusted respectively to the aperture of the flow control valve on the rotating speed and tracheae of denitration pump, so that de-
Nitre agent reaches optimal emitted dose, and makes the flow and out of stock dose of flows match of air, so that denitrfying agent can be equably
In being distributed to inlet air stack.In the running of boiler, having air always in cooling tube is kept, to prevent shower nozzle in boiler
Deform at a high temperature of flue gas.
Claims (5)
1. a kind of fluidized-bed combustion boiler denitrification apparatus, it is characterised in that including denitrfying agent storage tank, denitration pump, spray gun, compressed air dress
Put；Spray gun includes gun body and cooling tube, and cooling tube is sleeved on the outside of gun body, and in a tubular form, one end of gun body is provided with spray to gun body
Head, is provided with tracheae and denitration pipe on the tube wall of gun body, and forced air cooled tube is provided with cooling tube, and tracheae and forced air cooled tube are all connected to
On blowing plant, denitrfying agent storage tank Jing denitration pumps are connected to denitration pipe；Spray gun is arranged on the whirlwind of the fluidized-bed combustion boiler
On the side wall of the inlet air stack of separator, shower nozzle is towards in inlet air stack and beyond the inwall of inlet air stack；Arrange on tracheae
There is flow control valve.
2. fluidized-bed combustion boiler denitrification apparatus according to claim 1, it is characterised in that the shower nozzle of the spray gun exceedes whirlwind
The inwall 5-15mm of the inlet air stack of separator.
3. fluidized-bed combustion boiler denitrification apparatus according to claim 1, it is characterised in that the motor of the denitration pump is frequency conversion
Motor.
4. fluidized-bed combustion boiler denitrification apparatus according to claim 1, it is characterised in that also including the nitrogen oxidation being connected with each other
Analyte detection instrument and control device, nitrogen oxides detector is installed on the flue of fluidized-bed combustion boiler；
The control device includes central processing unit, denitration pump control unit and pneumatics control unit；Wherein：
Central processing unit, receives the data of nitrogen oxides detector transmission, and the data and preset value is compared, according to than
Relatively result sends control instruction, completes the co-ordination of denitration pump control unit and pneumatics control unit；
Denitration pump control unit, receives the control of central processing unit, completes the rotating speed control of the motor to denitration pump, de- to adjust
The output quantity of nitre pump；
Pneumatics control unit, receives the control of central processing unit, completes the control to the flow control valve on tracheae.
5. fluidized-bed combustion boiler denitrification apparatus according to claim 4, it is characterised in that central processing unit adopts 32 PLC
Programmable Logic Controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620637024.2U CN206152615U (en) | 2016-06-25 | 2016-06-25 | Fluidized bed boiler denitrification facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620637024.2U CN206152615U (en) | 2016-06-25 | 2016-06-25 | Fluidized bed boiler denitrification facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206152615U true CN206152615U (en) | 2017-05-10 |
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ID=58647329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620637024.2U Active CN206152615U (en) | 2016-06-25 | 2016-06-25 | Fluidized bed boiler denitrification facility |
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| Country | Link |
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| CN (1) | CN206152615U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879601A (en) * | 2016-06-25 | 2016-08-24 | 南通神马线业有限公司 | Fluidized bed boiler denitration device |
-
2016
- 2016-06-25 CN CN201620637024.2U patent/CN206152615U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879601A (en) * | 2016-06-25 | 2016-08-24 | 南通神马线业有限公司 | Fluidized bed boiler denitration device |
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