CN205461759U - But frequency conversion's deNOx systems - Google Patents
But frequency conversion's deNOx systems Download PDFInfo
- Publication number
- CN205461759U CN205461759U CN201620284171.6U CN201620284171U CN205461759U CN 205461759 U CN205461759 U CN 205461759U CN 201620284171 U CN201620284171 U CN 201620284171U CN 205461759 U CN205461759 U CN 205461759U
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- China
- Prior art keywords
- urea
- converter
- storage device
- pump
- mixing arrangement
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Abstract
The utility model provides a but frequency conversion's deNOx systems, including urea storage device and water storage device, urea storage device and water storage device are connected with urea pump and water pump respectively, and urea pump and water pump are adjusted through first converter and second converter respectively, preparation control module is connected to first converter and second converter, urea pump and water pump still are connected with mixing arrangement respectively, mixing arrangement connects measurement distribution module, jet gun is spouted in the connection of measurement distribution module, it still is connected with injection control module to measure the distribution module and spout jet gun. Reach accurate purpose of adjusting the uremic solution strength through converter and metering device, can improve denitration efficiency to urea solution concentration accurate control.
Description
Technical field
This utility model relates to denitrification apparatus technical field, regulates particularly to a kind of variable ratio frequency changer
Denitrating system.
Background technology
Substantial amounts of nitrogen oxides can be produced during waste incineration, combustion of fossil fuel etc., if
These discharged nitrous oxides are in air, it will environment is caused significant damage.Denitration refers to
Combustion product gases goes the process of denitrification, pollutes particularly significant for Preventing Environmental.De-
During nitre, it is required for being effectively distributed in specific region reducing agent, and is allowed to abundant
Mixing, to obtain higher denitration efficiency.Combustion product gases goes the process of denitrification, anti-
The importance of stop ring environment pollution, is contemplated shrilly as worldwide problem.
Incineration flue gas of household garbage NOx removal of the prior art mainly uses interpolation variousization
Learn medicament remove NOx, frequently be selective catalytic reduction (SCR) and selectivity non-
Two kinds of methods of catalytic reduction method (SNCR), its ultimate principle is all by the nitrogen oxides in flue gas
(NOx) react with the reducing agent-urea liquid sprayed in boiler, generate nitrogen (N2) and water
(H2O) to reduce the discharge of nitrogen oxides (NOx).Wherein frequently with reducing agent be that carbamide is molten
Liquid, and the device injecting urea solution into boiler internal employing is ejector.
In current existing out of stock device, the urea liquid total flow of input can only be regulated, work as reality
When border operating condition and debugging working condition there are differences, the control of this relatively-stationary urea nozzle
The urea liquid that mode is likely to result in denitrification apparatus region is inconsistent with the NOx extent of reaction,
It is not very accurate for causing the urea concentration configured, and has an impact denitration efficiency.Meanwhile,
In order to prevent control valve opening hour, pump overvoltage may be caused, have employed return duct to prevent this
One is dangerous, and so setting up return duct can increase power consumption, wastes the energy.The restriction loss of regulation valve
Also power consumption can be increased.
Utility model content
For problem above, this utility model patent purpose is to devise a kind of variable ratio frequency changer regulation
Denitrating system, reach accurately to regulate the mesh of uremic solution concentration by converter and metering device
, can control accurate to urea concentration, improve denitration efficiency.This utility model is logical
Cross what techniques below scheme realized:
A kind of denitrating system of variable ratio frequency changer regulation, including urea storage device and water storage device,
Described urea storage device and water storage device are connected to urea pump and water pump, urea pump and
Water pump is adjusted by the first converter and the second converter respectively, described first converter and
Second converter connects preparation control module, and described urea pump and water pump have been also respectively connected with mixing
Device, described mixing arrangement connects metering distribution module, and described metering distribution module connects injection
Rifle, described metering distribution module and ejecting gun are also associated with injection control module.
Further, the quantity of ejecting gun described in the utility model is one or more.
Further, mixing arrangement described in the utility model is jetting type mixing arrangement.
The denitrating system of the variable ratio frequency changer regulation that this utility model provides compared with prior art has
Advantages below:
1, have employed by converter adjust revolution speed reach regulate uremic solution concentration purpose,
Owing to converter Adjustment precision is up to 0.03%, can control accurate to urea concentration, carry
High denitration efficiency；
2, pass through Frequency Converter Control, it is not necessary to return duct, it is not necessary to regulation valve, only need to increase frequency conversion
Device, construction cost declines；
3, avoiding return loss and restriction loss, reduce power consumption, operating cost has aobvious
Write and decline.
Accompanying drawing explanation
Referring to the drawings this utility model embodiment is described further, wherein:
Fig. 1 is the module map of the denitrating system of a kind of variable ratio frequency changer of this utility model regulation.
Detailed description of the invention
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
The utility model proposes the denitrating system of a kind of variable ratio frequency changer regulation, refer to Fig. 1, bag
Include urea storage device and water storage device, described urea storage device and water storage device respectively
Connect and have urea pump and water pump, urea pump and water pump respectively by the first converter and the second frequency conversion
Device is adjusted, and described first converter and the second converter connect preparation control module, described
Urea pump and water pump have been also respectively connected with mixing arrangement, and described mixing arrangement connects metering distribution mould
Block, described metering distribution module connects ejecting gun, and described metering distribution module and ejecting gun also connect
It is connected to injection control module.
The quantity of described ejecting gun is one or more.
Described mixing arrangement is jetting type mixing arrangement.Jetting type mixing arrangement enables to this and takes off
Nitre system has the advantage that denitration effect is preferable and denitration efficiency is high.
The denitrating system of the variable ratio frequency changer regulation that this utility model provides have employed to be adjusted by converter
Whole revolution speed reach regulate uremic solution concentration purpose, due to converter Adjustment precision up to
0.03%, can control accurate to urea concentration, improve denitration efficiency；Pass through converter
Controlling, it is not necessary to return duct, it is not necessary to regulation valve, only need to increase converter, construction cost declines；
Avoiding return loss and restriction loss, reduce power consumption, operating cost can be decreased significantly.
The above detailed description of the invention of the present utility model, is not intended that and protects this utility model
Protect the restriction of scope.Any other phases various made according to technology of the present utility model design
The change answered and deformation, should be included in this utility model scope of the claims.
Claims (3)
1. the denitrating system of a variable ratio frequency changer regulation, it is characterised in that include that urea storage fills
Putting and water storage device, described urea storage device and water storage device are connected to urea pump
With water pump, urea pump and water pump are adjusted by the first converter and the second converter respectively,
Described first converter and the second converter connect preparation control module, described urea pump and water pump
Being also respectively connected with mixing arrangement, described mixing arrangement connects metering distribution module, described metering
Distribution module connects ejecting gun, and described metering distribution module and ejecting gun are also associated with spraying fire
Module.
The denitrating system of a kind of variable ratio frequency changer the most according to claim 1 regulation, its feature
Being, the quantity of described ejecting gun is one or more.
The denitrating system of a kind of variable ratio frequency changer the most according to claim 1 regulation, its feature
Being, described mixing arrangement is jetting type mixing arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620284171.6U CN205461759U (en) | 2016-04-06 | 2016-04-06 | But frequency conversion's deNOx systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620284171.6U CN205461759U (en) | 2016-04-06 | 2016-04-06 | But frequency conversion's deNOx systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205461759U true CN205461759U (en) | 2016-08-17 |
Family
ID=56644268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620284171.6U Expired - Fee Related CN205461759U (en) | 2016-04-06 | 2016-04-06 | But frequency conversion's deNOx systems |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205461759U (en) |
-
2016
- 2016-04-06 CN CN201620284171.6U patent/CN205461759U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20160817 Termination date: 20170406 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |