CN207287124U - A kind of SNCR denitration device - Google Patents
A kind of SNCR denitration device Download PDFInfo
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- CN207287124U CN207287124U CN201721149297.3U CN201721149297U CN207287124U CN 207287124 U CN207287124 U CN 207287124U CN 201721149297 U CN201721149297 U CN 201721149297U CN 207287124 U CN207287124 U CN 207287124U
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- control device
- volume control
- urea
- urea liquid
- sncr denitration
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Abstract
It the utility model is related to a kind of SNCR denitration device, it is characterised in that：Including feed bin, dispenser, dissolving tank, urea liquid delivery pump, urea liquid storage tank, volume control device, PLC controller, mixed diluting device, surge tank, metering pump, spraying system, the volume control device includes two, respectively volume control device 1, volume control device 2, volume control device 1 is used to carry out flow detection and control to the urea liquid from urea liquid storage tank out, volume control device 2 is used to carry out flow detection and control to dilution water, the urea liquid and the dilution water are mixed in dilution mixing device, obtain suitable urea concentration, so as to reduce the escaping of ammonia, improve denitration efficiency.
Description
Technical field
Fume treatment field is the utility model is related to, more particularly to a kind of SNCR denitration device.
Background technology
Due to directly burning for fossil fuel, nitrogen oxides (NOx) pollution becomes a global environmental problem, its meeting
Cause the formation of greenhouse effects, depletion of the ozone layer and acid rain.Oxynitrides is to cause one of primary pollution source of atmosphere pollution,
Its harm is very big.China is the country that main coal is main energy sources, and 70% comes from the discharge capacity of China's oxynitrides
Coal burning, oxynitride discharge must not be ignored, the energy efficiently use discharge with comburant by more and more concerns and
Research.
SNCR systems are a kind of " selective non-catalytic reduction denitration " process systems, are the denitrating flue gas skills after a kind of burning
Art, by spraying into suitable reduction in thermal power generation boiler, refuse burner, cement kiln and other Industrial Boiler appropriate locations
Agent removes the chemical reaction process of NOx, can effectively reduce refuse of refuse burning generating plant and burn nitrogen oxygen in the flue gas produced
Compound content.SNCR is that one kind does not have to catalyst, in the range of 850~1100 DEG C, the technique of direct-reduction NOx in flue gas.
The denitration mechanism of SNCR technologies is that reducing agent such as ammonia, urea weak solution etc. are sprayed into the area that fire box temperature is 850~1100 DEG C
Domain, which goes out NH3 and carries out reaction generation N2 and H2O with the NOx in flue gas, so as to reach the mesh of denitration
's.SNCR denitration system is simple, easy to operate, is a kind of economical and practical NOx removal method.In SNCR denitration system, urinating
Plain solution enters before spraying system, it is necessary to suitable concentration is adjusted to, because only that the ability under suitable urea concentration
Reach best denitration efficiency and the escaping of ammonia of acquisition minimum.Therefore need to be diluted the urea liquid in storage tank, it is necessary to
Urea liquid and dilution water are accurately controlled, suitable concentration could be obtained.
Utility model content
In view of the defects existing in the prior art, the technical problem to be solved by the utility model is to provide a kind of SNCR to take off
Nitre device, can be accurately controlled urea liquid and dilution water respectively, mixed urea liquid is reached suitable
Concentration, so as to improve denitration efficiency, reduces the escaping of ammonia, possesses good denitration effect.
In order to solve the above technical problems, the technical scheme adopted by the utility model is that：
A kind of SNCR denitration device, including feed bin, dispenser, dissolving tank, urea liquid delivery pump, urea liquid storage tank,
Volume control device, PLC controller, mixed diluting device, surge tank, metering pump, spraying system, the feed bin are used to store dry
The dry urea is transported to the dissolving tank by urea, the dispenser, then using demineralized water by the dry urea described
Urea liquid is dissolved into dissolving tank, the urea liquid is transported to the urea liquid by the urea liquid delivery pump and stores up
Tank, the volume control device include two, are respectively volume control device 1, volume control device 2, and the flow control fills
1 is put to be used to carry out flow detection and flow control, the stream to the urea liquid from the urea liquid storage tank out
Amount control device 2 is used to carry out flow detection to dilution water and flow control, the urea liquid and the dilution water are diluting
Mixed in mixing arrangement, obtain suitable urea concentration, the volume control device 1 and the volume control device
2 are controlled by the PLC controller.
Further, the volume control device includes flowmeter and regulating valve.
Further, the regulating valve includes electronic regulated valve and manual modulation valve.
Further, the electronic regulated valve can be controlled by the PLC controller.
The beneficial effects of the utility model are, by volume control device 1 to the urine from urea liquid storage tank out
Plain solution carries out flow detection and control, flow detection and control is carried out to dilution water by volume control device 2, then dilute
Release in mixing arrangement and mixed, obtain suitable urea concentration, so as to improve denitration efficiency, reduce the escaping of ammonia.
Brief description of the drawings
Fig. 1 is the system block diagram of the utility model SNCR denitration device.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not intended to limit the scope of the present invention.
As shown in Figure 1, a kind of SNCR denitration device, including feed bin, dispenser, dissolving tank, urea liquid delivery pump, urea
Solution reservoir, volume control device, PLC controller, mixed diluting device, surge tank, metering pump, spraying system, feed bin are used for
Store dry urea, the dry urea in feed bin is transported to dissolving tank by dispenser, then dry urea is being dissolved using demineralized water
The urea liquid of 30%-50% mass concentrations is dissolved into tank, being transported to urea liquid by urea liquid delivery pump stores up
Tank, the urea concentration are excessive, it is impossible to are directly injected in reacting furnace, it is necessary to be diluted and reach suitable dense to it
Degree, dilution carry out in mixed diluting device, and urea liquid enters mixed diluting device by volume control device 1, dilute
Release water and enter mixed diluting device by volume control device 2, the volume control device 1 and volume control device 2 include stream
Gauge and regulating valve, flowmeter are used to carry out flow detection, and the flow results detected are sent to PLC controller by flowmeter,
PLC controller carries out comprehensive descision and processing to the flow of urea liquid and dilution water, respectively to volume control device 1 and flow
The aperture of regulating valve is controlled in control device 2, urea liquid is reached the concentration requirement of injection, it is generally the case that
The concentration is 10% or so.Regulating valve includes electronic regulated valve and manual modulation valve, and electronic regulated valve is used to receive to be controlled from PLC
The control signal that device processed is sent, the aperture of valve is automatically adjusted according to control signal.Manual modulation valve occurs in electronic regulated valve
Alternately used during failure.Urea liquid after dilution is transported to the surge tank of reacting furnace corresponding platform, then passes through metering
Pump is fed to the spraying system before reacting furnace, is distributed by spraying system to the corresponding temperature window of reacting furnace, reaches removing NOx's
Purpose.
According to the disclosure and teachings of the above specification, the utility model those skilled in the art can also be to above-mentioned reality
Apply mode make a change and modification.Therefore, the utility model is not limited to embodiment disclosed and described above, right
Some modifications and changes of the utility model should also be as falling into the scope of the claims of the utility model.In addition, to the greatest extent
Some specific terms have been used in pipe this specification, but these terms are merely for convenience of description, not to the utility model
Form any restrictions.
Claims (4)
- A kind of 1. SNCR denitration device, it is characterised in that：Including feed bin, dispenser, dissolving tank, urea liquid delivery pump, urea Solution reservoir, volume control device, PLC controller, mixed diluting device, surge tank, metering pump, spraying system, the feed bin For storing dry urea, the dry urea is transported to the dissolving tank by the dispenser, then will be described dry using demineralized water Urea is dissolved into urea liquid in the dissolving tank, and the urea liquid is transported to described by the urea liquid delivery pump Urea liquid storage tank, the volume control device includes two, respectively volume control device 1, volume control device 2, described Volume control device 1 is used to carry out flow detection and flow control to the urea liquid from the urea liquid storage tank out System, the volume control device 2 are used to carry out flow detection and flow control, the urea liquid and the dilution to dilution water Water is mixed in the dilution mixing device, obtains suitable urea concentration, the volume control device 1 and described Volume control device 2 is controlled by the PLC controller.
- 2. SNCR denitration device as claimed in claim 1, it is characterised in that：The volume control device includes flowmeter and regulating valve.
- 3. SNCR denitration device as claimed in claim 2, it is characterised in that：The regulating valve includes electronic regulated valve and manual modulation valve.
- 4. SNCR denitration device as claimed in claim 3, it is characterised in that：The electronic regulated valve can be controlled by the PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721149297.3U CN207287124U (en) | 2017-09-08 | 2017-09-08 | A kind of SNCR denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721149297.3U CN207287124U (en) | 2017-09-08 | 2017-09-08 | A kind of SNCR denitration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207287124U true CN207287124U (en) | 2018-05-01 |
Family
ID=62446239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721149297.3U Expired - Fee Related CN207287124U (en) | 2017-09-08 | 2017-09-08 | A kind of SNCR denitration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207287124U (en) |
-
2017
- 2017-09-08 CN CN201721149297.3U patent/CN207287124U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: SNCR (Selective Non-catalytic Reduction) denitration device and denitration method Effective date of registration: 20181226 Granted publication date: 20180501 Pledgee: Shaoguan Branch of China Construction Bank Co.,Ltd. Pledgor: GUANGDONG ZHONGXING TECHNOLOGY Co.,Ltd. Registration number: 2018440000406 |
|
| 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: 20180501 |