CN206867993U - The point variable spraying system of SO3 scavengers in denitrating flue gas - Google Patents
The point variable spraying system of SO3 scavengers in denitrating flue gas Download PDFInfo
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- CN206867993U CN206867993U CN201720425795.XU CN201720425795U CN206867993U CN 206867993 U CN206867993 U CN 206867993U CN 201720425795 U CN201720425795 U CN 201720425795U CN 206867993 U CN206867993 U CN 206867993U
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- flue gas
- scavenger
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
It the utility model is related to SO3Removing sulfuldioxide field, SO in a kind of denitrating flue gas is disclosed3The point variable spraying system of scavenger.Volume control device of the present utility model is made up of electromagnetic flow valve, and each electromagnetic flow valve is connected by pipeline with spray equipment；Spray equipment is arranged in the inlet air stack of SCR reactors, including the first net grid support and the equally distributed nozzle on the first net grid support, and the injection direction and flow of flue gas of nozzle are in opposite direction；Electromagnetic flow valve connects one to one with nozzle, and electromagnetic flow valve electrically connects with the signal output part of control system；SO3Detection means is arranged in the outlet flue of SCR reactors, including the second net grid support and the equally distributed SO on the second net grid support3Detection probe, SO3The position distribution of detection probe is corresponding with nozzle, SO3Detection probe electrically connects with the signal input part of control system, SO3Detection probe corresponds with electromagnetic flow valve.
Description
Technical field
It the utility model is related to SO3Removing sulfuldioxide field, more particularly to SO in a kind of denitrating flue gas3The fixed point of scavenger
Variable spraying system.
Background technology
In SCR denitration technology, substantial amounts of SO can be contained in flue gas3, SO2In the part SO after SCR catalyst2Also can turn
Turn to SO3, SO3It is the main component to form PM2.5 and aerosol, and forms the important component of haze.Remove coal-fired flue-gas
In SO3, front end removing sulfuldioxide is exactly to spray into SO in the inlet air stack before SCR reactors3Scavenger, it is anti-that removing enters SCR
Answer the SO in the flue gas before device3, it can not be reacted generation ammonium hydrogen sulfate with reducing agent ammonia, to ensure that air preheater is normal for a long time
Operation, even if also can guarantee that SCR device normal operation at low load, while reduce and be discharged into SO in the flue gas of air3Concentration.
But because ignition temperature of the coal in boiler at each point is different, the flue gas come out from boiler is in same flue cross section
Difference SO3Actual concentrations it is different；SO in other flue gas2By thering is 0.5% ~ 1.5% to be converted into again after SCR catalyst
SO3, because SCR catalyst is long-term use of, cause the activity at each section difference to be present so that SO2To SO3Conversion ratio not
Together, then the SO in SCR exhaust pass at same section difference3Actual concentrations it is different.Under with fixed injection pressure to
Injection SO in flue3During scavenger, the SO at the difference in same flue cross section just occurs3The dosage of scavenger it is bigger than normal or
It is less than normal, there is scavenger deficiency or excessive phenomenon, cause SO3Removal efficiency it is not high.
Utility model content
The utility model provides a kind of SO3SO in the denitrating flue gas that scavenger utilization rate is high, removal efficiency is high3Scavenger
Point variable spraying system.
Technical problems to be solved are：The actual SO of difference in flue cross section3Concentration is different, with unified injection pressure
Injection scavenger can produce the problem of scavenger is excessive or insufficient, cause SO3Removal efficiency it is not high, scavenger utilization rate is not
Foot.
In order to solve the above technical problems, the utility model adopts the following technical scheme that：
SO in the utility model denitrating flue gas3The point variable spraying system of scavenger, including scavenger storage tank, SO3Detection
Device, volume control device, spray equipment and control system, the liquid outlet of scavenger storage tank are connected by pump with the first pipeline,
The first pipeline other end is connected with volume control device；The volume control device is composed in parallel by electromagnetic flow valve, Mei Ge electricity
Magnetic flow valve is connected by pipeline with spray equipment；Spray equipment is arranged in the inlet air stack of SCR reactors, the spray dress
Put including the first net grid support and the equally distributed nozzle on the first net grid support, injection direction and the flue gas stream of the nozzle
It is dynamic in opposite direction；The electromagnetic flow valve connects one to one with nozzle, the signal output part of electromagnetic flow valve and control system
Electrical connection；SO3Detection means is arranged in the outlet flue of SCR reactors, the SO3Detection means includes the second net grid support
With the equally distributed SO on the second net grid support3Detection probe, SO3The position distribution of detection probe is corresponding with nozzle, SO3
Detection probe electrically connects with the signal input part of control system, SO3Detection probe corresponds with electromagnetic flow valve.
SO in the utility model denitrating flue gas3The point variable spraying system of scavenger, further, first grid
Support is fixed with flue inner wall, and the first net grid support is set perpendicular to flow of flue gas direction, is adapted with flue cross section.
SO in the utility model denitrating flue gas3The point variable spraying system of scavenger, further, between the nozzle
Spacing be 0.3-0.5m.
SO in the utility model denitrating flue gas3The point variable spraying system of scavenger, further, first pipeline
On be connected with reflux line, be connected after the reflux line series connection magnetic valve with scavenger storage tank inlet.
SO in the utility model denitrating flue gas3The point variable spraying system of scavenger, further, second grid
Support is fixed with flue inner wall, and the second net grid support is set perpendicular to flow of flue gas direction, is adapted with flue cross section.
SO in the utility model denitrating flue gas3The point variable spraying system of scavenger has as follows compared with prior art
Beneficial effect：
SO in the utility model denitrating flue gas3The point variable spraying system of scavenger is by spray equipment and SO3Detection means
It is separately positioned at the inlet air stack and outlet flue of SCR reactors, implements the SO at difference in monitoring flue cross section3Concentration
And concentration signal is sent to volume control device by control system, corresponding nozzle is controlled by electromagnetic flow valve, is adjusted
Save the pressure and flow of nozzle so that SO3The emitted dose of scavenger can be with SO herein3Content correlation, using more
Flexibly, targetedly, SO is avoided3The problem of emitted dose of scavenger is excessive or insufficient, improves SO3Removal efficiency and SO3
The utilization rate of scavenger, the level of purification of flue gas is improved, reduces production cost, greatly save disappearing for the energy and resource
Consumption.
Below in conjunction with the accompanying drawings to SO in denitrating flue gas of the present utility model3The point variable spraying system of scavenger is made into one
Walk explanation.
Brief description of the drawings
Fig. 1 is SO in the utility model denitrating flue gas3The structural representation of the point variable spraying system of scavenger；
Fig. 2 is SO in the utility model denitrating flue gas3The schematic view of the mounting position of the point variable spraying system of scavenger.
Reference：
1- scavenger storage tanks；11- pumps；The pipelines of 12- first；13- reflux lines；14- magnetic valves；2-SO3Detection means；
The net grid supports of 21- second；22-SO3Detection probe；3- volume control devices；31- electromagnetic flow valves；4- spray equipments；41-
One net grid support；42- nozzles；5- control systems；6-SCR reactors；7- inlet air stacks；8- outlet flues.
Embodiment
As shown in figure 1, SO in the utility model denitrating flue gas3The point variable spraying system of scavenger stores up including scavenger
Tank 1, SO3Detection means 2, volume control device 3, spray equipment 4 and control system 5, the liquid outlet of scavenger storage tank 1 pass through pump
11 are connected with the first pipeline 12, and the other end of the first pipeline 12 is connected with volume control device 3, and backflow is connected with the first pipeline 12
Pipeline 13, reflux line 13 connect magnetic valve 14 after be connected with the inlet of scavenger storage tank 1；Volume control device 3 is by electromagnetic current
Amount valve 31 is composed in parallel, and each electromagnetic flow valve 31 is connected by pipeline with spray equipment 4；As shown in Fig. 2 spray equipment 4 is set
Put in the inlet air stack 7 of SCR reactors 6, spray equipment 4 includes the first net grid support 41 and nozzle 42, the first net grid support
41 are fixed with flue inner wall, and the first net grid support 41 is set perpendicular to flow of flue gas direction, is adapted with flue cross section, first
Net grid support 41 is made up of crisscross rib, is evenly distributed with nozzle 42 on rib, and the spacing between nozzle 42 is 0.3-
0.5m, the injection direction and flow of flue gas of nozzle 42 are in opposite direction；Electromagnetic flow valve 31 connects one to one with nozzle 42, electromagnetism
Flow valve 31 electrically connects with the signal output part of control system 5；As shown in Fig. 2 SO3Detection means 2 is arranged on SCR reactors 6
Outlet flue 8 in, SO3Detection means 2 includes SO3The net grid support 21 of detection probe 22 and second, the second net grid support 21 with
Flue inner wall is fixed, and the second net grid support 21 is set perpendicular to flow of flue gas direction, is adapted with flue cross section, the second grid
Support 21 is made up of crisscross rib, and SO is evenly distributed with rib3Detection probe 22, SO3The position of detection probe 22 point
Cloth is corresponding with nozzle 42, SO3Detection probe 22 electrically connects with the signal input part of control system 5, SO3Detection probe 22 and electricity
Magnetic flow valve 31 corresponds.
SO in the utility model denitrating flue gas3The specific work process of the point variable spraying system of scavenger is as follows：
Flue gas enters flue gas outlet flue 8, the SO being arranged at outlet flue 8 after the denitration of SCR reactors 63Detection
Probe 22 detects the SO in flue cross section at difference respectively3Concentration, and by the detection value signal of each detection probe transmit to
Control system 5, and signal integration is resent to electromagnetic flow valve 31 corresponding in volume control device 3 by control system 5,
To adjust the injection flow and pressure of nozzle 42 one-to-one with detection probe position so that the SO of the spray site of nozzle 423It is dense
The SO for spending and ejecting3The amount of scavenger is adapted, and ensures SO3The maximum utilization rate of scavenger.
Embodiment described above is only that preferred embodiment of the present utility model is described, not to this practicality
New scope is defined, and on the premise of the utility model design spirit is not departed from, those of ordinary skill in the art are to this
The various modifications and improvement that the technical scheme of utility model is made, the protection of the utility model claims book determination all should be fallen into
In the range of.
Claims (5)
1. SO in denitrating flue gas3The point variable spraying system of scavenger, it is characterised in that：Including scavenger storage tank（1）、SO3Inspection
Survey device（2）, volume control device（3）, spray equipment（4）And control system（5）, scavenger storage tank（1）Liquid outlet pass through
Pump（11）With the first pipeline（12）Connection, the first pipeline（12）The other end and volume control device（3）Connection；The flow control
Device（3）By electromagnetic flow valve（31）Compose in parallel, each electromagnetic flow valve（31）Pass through pipeline and spray equipment（4）Connection；
Spray equipment（4）It is arranged on SCR reactors（6）Inlet air stack（7）It is interior, the spray equipment（4）Including the first net grid support
（41）With in the first net grid support（41）Upper equally distributed nozzle（42）, the nozzle（42）Injection direction and flow of flue gas
In the opposite direction；The electromagnetic flow valve（31）With nozzle（42）Connect one to one, electromagnetic flow valve（31）With control system（5）
Signal output part electrical connection；SO3Detection means（2）It is arranged on SCR reactors（6）Outlet flue（8）It is interior, the SO3Detection
Device（2）Including the second net grid support（21）With in the second net grid support（21）Upper equally distributed SO3Detection probe（22）, SO3
Detection probe（22）Position distribution and nozzle（42）It is corresponding, SO3Detection probe（22）With control system（5）Signal input
End electrical connection, SO3Detection probe（22）With electromagnetic flow valve（31）Correspond.
2. SO in denitrating flue gas according to claim 13The point variable spraying system of scavenger, it is characterised in that：It is described
First net grid support（41）Fixed with flue inner wall, the first net grid support（41）Set perpendicular to flow of flue gas direction, with flue
Cross section is adapted.
3. SO in denitrating flue gas according to claim 13The point variable spraying system of scavenger, it is characterised in that：It is described
Nozzle（42）Between spacing be 0.3-0.5m.
4. SO in denitrating flue gas according to claim 33The point variable spraying system of scavenger, it is characterised in that：It is described
First pipeline（12）On be connected with reflux line（13）, the reflux line（13）Series connection magnetic valve（14）Afterwards with scavenger storage tank
（1）Inlet connects.
5. SO in denitrating flue gas according to claim 43The point variable spraying system of scavenger, it is characterised in that：It is described
Second net grid support（21）Fixed with flue inner wall, the second net grid support（21）Set perpendicular to flow of flue gas direction, with flue
Cross section is adapted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720425795.XU CN206867993U (en) | 2017-04-21 | 2017-04-21 | The point variable spraying system of SO3 scavengers in denitrating flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720425795.XU CN206867993U (en) | 2017-04-21 | 2017-04-21 | The point variable spraying system of SO3 scavengers in denitrating flue gas |
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| Publication Number | Publication Date |
|---|---|
| CN206867993U true CN206867993U (en) | 2018-01-12 |
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| CN201720425795.XU Active CN206867993U (en) | 2017-04-21 | 2017-04-21 | The point variable spraying system of SO3 scavengers in denitrating flue gas |
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| CN (1) | CN206867993U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109396114A (en) * | 2018-12-13 | 2019-03-01 | 北京国电龙源环保工程有限公司 | The intelligent cleaning system and its method for cleaning of SCR catalyst surface area ash |
| CN109991047A (en) * | 2019-04-28 | 2019-07-09 | 北京国电龙源环保工程有限公司 | Have uniformly mixing and patrols the measuring system and detection method for surveying synchronized sampling with subregion |
-
2017
- 2017-04-21 CN CN201720425795.XU patent/CN206867993U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109396114A (en) * | 2018-12-13 | 2019-03-01 | 北京国电龙源环保工程有限公司 | The intelligent cleaning system and its method for cleaning of SCR catalyst surface area ash |
| CN109396114B (en) * | 2018-12-13 | 2023-05-23 | 国能龙源环保有限公司 | Intelligent cleaning system and cleaning method for SCR catalyst surface area ash |
| CN109991047A (en) * | 2019-04-28 | 2019-07-09 | 北京国电龙源环保工程有限公司 | Have uniformly mixing and patrols the measuring system and detection method for surveying synchronized sampling with subregion |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100039 room 901, 9 / F, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee after: Guoneng Longyuan environmental protection Co.,Ltd. Address before: 100039 room 911, 1 building, 16 West Fourth Ring Road, Haidian District, Beijing. Patentee before: BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENGINEERING Co.,Ltd. |
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| CP03 | Change of name, title or address |