CN207756012U - Air heated type ammonia sky mixing arrangement - Google Patents
Air heated type ammonia sky mixing arrangement Download PDFInfo
- Publication number
- CN207756012U CN207756012U CN201721802665.XU CN201721802665U CN207756012U CN 207756012 U CN207756012 U CN 207756012U CN 201721802665 U CN201721802665 U CN 201721802665U CN 207756012 U CN207756012 U CN 207756012U
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- CN
- China
- Prior art keywords
- electric heater
- ammonia
- static mixer
- mixing arrangement
- heated type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of air heated type ammonia sky mixing arrangement, which includes：Dilution air, ammonium hydroxide gasifier, electric heater I, electric heater II and static mixer, the dilution air outlet is connected to I entrance of electric heater by diluting wind input pipe, and the outlet of the electric heater I is connected to by hot wind input pipe with the arrival end of static mixer；The ammonium hydroxide gasifier exit is connected to the welding of II entrance of electric heater, and the outlet of the electric heater II is connected to by ammonia input pipe with static mixer upper end；The static mixer outlet end connects by the road leads to SCR system.The device can accurately control the temperature of hot wind and ammonia gasification, and the flow of dilution wind and ammonia, and after hot wind and ammonia are mixed by static mixer, ratio can accurately ensure 5% or so.
Description
Technical field
The utility model belongs to SCR gas denitrifying technologies field, and in particular to a kind of air heated type ammonia sky mixing arrangement.
Background technology
In recent years, being gradually increased with environmental requirement, in the smoke evacuation tail gas in order to reduce coal-fired boiler in thermal power plant
The discharge capacity of nitrogen oxides, general selectivity catalysis reduction (SCR) denitrating flue gas method, i.e.,：Under the effect of the catalyst, pass through to
Ammonia is sprayed into smoke evacuation tail gas, the nitrogen oxides in tail gas of discharging fume is reduced into nitrogen and water, smoke evacuation tail gas is made not make environment
At secondary pollution；Before ammonia is sprayed into smoke evacuation tail gas, ammonia must be passed through ammonia air mixer and carry out concentration dilution, and ammonia is empty
Ammonia is diluted to concentration by air and sprays into smoke evacuation tail gas again not higher than 5% (volume ratio) by gas mixer, so that it is guaranteed that ammonia
It is safe to use.But existing ammonia sky mixing arrangement can not accurately control air and ammonia heating process and ammonia and
The flow of air impacts follow-up ammonia sky mixing ratio.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of air heated type ammonia sky mixing arrangement, the device packets
It includes：Dilution air, ammonium hydroxide gasifier, electric heater I, electric heater II and static mixer, the dilution air outlet and electricity
I entrance of heater passes through hot wind input pipe and static mixer by diluting the connection of wind input pipe, the outlet of the electric heater I
Arrival end is connected to；With electric heater II by flanged joint, the outlet of the electric heater II passes through the ammonium hydroxide gasifier exit
Ammonia input pipe is connected to static mixer upper end；The static mixer outlet end connects by the road leads to SCR system.
Wherein, in above-mentioned air heated type ammonia sky mixing arrangement, the hot wind input pipe and static mixer outlet end connect
It is respectively mounted several flowmeters on the pipeline of logical SCR system.
Wherein, in above-mentioned air heated type ammonia sky mixing arrangement, several flowmeters and tune are installed on the ammonia input pipe
Save valve.
Wherein, in above-mentioned air heated type ammonia sky mixing arrangement, the ammonia inlet of the ammonium hydroxide gasifier is equipped with flowmeter
And regulating valve.
Wherein, in above-mentioned air heated type ammonia sky mixing arrangement, the surface of the electric heater I is equipped with protection platinum resistance.
Wherein, in above-mentioned air heated type ammonia sky mixing arrangement, the electric heater II controls switch control by grouping and adds
Heat.
Compared with prior art, the utility model has the beneficial effects that：Air heated type ammonia provided by the utility model is empty
Mixing arrangement is respectively adopted electric heater to the ammonia after dilution wind and gasification and heats：I surface of electric heater is equipped with protection
Platinum resistance, when I surface platinum resistance of electric heater is more than protection temperature, platinum resistance can be automatically stopped work, and electric heater II passes through
Needed for grouping control switch heating, the certifiable dilution wind of the pattern heated respectively and ammonia reach before entering static mixer
Temperature.In addition, the air quantity that dilution air generates is changeless, and the ammonia inlet of ammonium hydroxide gasifier is equipped with flowmeter and tune
Valve is saved, ammonium hydroxide flow can be accurately controlled so that it is determined that ammonia flow, after hot wind and ammonia are mixed by static mixer, ratio
Can accurately it ensure 5% or so.
Description of the drawings
Fig. 1 is the structural schematic diagram of air heated type ammonia sky mixing arrangement provided by the utility model；
Reference numeral：1- dilution airs, 2- ammonium hydroxide gasifier, 3- electric heaters I, 4- electric heaters II, 5- static mixings
Device, 6- dilution wind input pipe, 7- hot winds input pipe, 8- ammonias input pipe, 9-SCR systems, 10- flowmeters, 11- regulating valves, 12-
Grouping control switch.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Air heated type ammonia sky mixing arrangement shown in FIG. 1 is please referred to, which includes：Dilution air 1, ammonium hydroxide gasifier
2, electric heater I 3, electric heater II 4 and static mixer 5, the outlet of the dilution air 1 pass through dilute with I 3 entrance of electric heater
The connection of wind input pipe 6 is released, the outlet of the electric heater I 3 is connected to by hot wind input pipe 7 with the arrival end of static mixer 5；Institute
The outlet of ammonium hydroxide gasifier 2 is stated with electric heater II 4 by flanged joint, the outlet of the electric heater II 2 passes through ammonia input pipe 8
It is connected to 5 upper end of static mixer；5 outlet end of the static mixer connects by the road leads to SCR system 9；
The hot wind input pipe 7 is connected on the pipeline of SCR system 9 with 5 outlet end of static mixer and is respectively mounted several flows
Meter 10, for adjusting at any time, hot wind enters the flow of static mixer 5 and ammonia sky gaseous mixture enters the flow of SCR system 9.
Several flowmeters 10 and regulating valve 11 are installed on the ammonia input pipe 8, enter static state for adjusting ammonia at any time
The flow of mixer 5.
The ammonia inlet of the ammonium hydroxide gasifier 2 is equipped with flowmeter 10 and regulating valve 11, for accurately controlling ammonium hydroxide flow
So that it is determined that ammonia flow.
The surface of the electric heater I 3 be equipped with protection platinum resistance, when I surface platinum resistance of electric heater be more than protection temperature,
Platinum resistance can be automatically stopped work；The electric heater II 4 is by the grouping control control heating of switch 13.
Operation principle：Air heated type ammonia sky mixing arrangement provided by the utility model provides fixed wind by dilution air 1
The dilution wind of amount, dilution wind enter 5 arrival end of static mixer after the heating of electric heater I 3, from hot wind input pipe 7.Ammonia by
Electric heater II 4 directly heats ammonium hydroxide gasifier 2 come the ammonium hydroxide that gasifies, and 2 ammonia inlet of ammonium hydroxide gasifier is equipped with flowmeter and adjusting
Valve, can accurately control ammonium hydroxide flow so that it is determined that ammonia flow, and the ammonia of generation of gasifying is through ammonia input pipe 8 from static mixer
5 upper ends enter static mixer 5, are mixed in static mixer 5 with hot wind, enter SCR system by the road, can make SCR
System high efficiency is run.
Above-mentioned ammonia sky mixing arrangement is respectively adopted electric heater to the ammonia after dilution wind and gasification and heats：Electricity
I 3 surface of heater is equipped with protection platinum resistance, and when I 3 surface platinum resistance of electric heater is more than protection temperature, platinum resistance can stop automatically
It only works, electric heater II 4 controls switch heating by being grouped, and the pattern heated respectively can guarantee that dilution wind and ammonia are entering
Reach required temperature before static mixer 5.In addition, the air quantity that dilution air 1 generates is changeless, and ammonium hydroxide gasifier
2 ammonia inlet is equipped with flowmeter and regulating valve, can accurately control ammonium hydroxide flow so that it is determined that ammonia flow, when hot wind and ammonia
After being mixed by static mixer 5, ratio can accurately ensure 5% or so.
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art is come
Say, still can with technical scheme described in the above embodiments is modified, or to which part technical characteristic into
Row equivalent replacement, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all
It is included within the scope of protection of this utility model.
Claims (6)
1. air heated type ammonia sky mixing arrangement, which is characterized in that the device includes：Dilution air (1), ammonium hydroxide gasifier (2),
Electric heater I (3), electric heater II (4) and static mixer (5)；Dilution air (1) outlet enters with electric heater I (3)
Mouth is connected to by diluting wind input pipe (6), and the electric heater I (3) outlet passes through hot wind input pipe (7) and static mixer
(5) arrival end connection；Ammonium hydroxide gasifier (2) outlet passes through flanged joint, the electric heater with electric heater II (4)
II (4) outlet is connected to by ammonia input pipe (8) with static mixer (5) upper end；Static mixer (5) outlet end is through pipe
SCR system (9) is led in road connection.
2. air heated type ammonia sky mixing arrangement according to claim 1, which is characterized in that the hot wind input pipe (7)
It is connected on the pipeline of SCR system (9) with static mixer (5) outlet end and is respectively mounted several flowmeters (10).
3. air heated type ammonia sky mixing arrangement according to claim 1, which is characterized in that the ammonia input pipe (8)
It is upper that several flowmeters (10) and regulating valve (11) are installed.
4. air heated type ammonia sky mixing arrangement according to claim 1, which is characterized in that the ammonium hydroxide gasifier (2)
Ammonia inlet be equipped with flowmeter (10) and regulating valve (11).
5. air heated type ammonia sky mixing arrangement according to claim 1, which is characterized in that the electric heater I (3)
Surface is equipped with protection platinum resistance.
6. air heated type ammonia sky mixing arrangement according to claim 1, which is characterized in that the electric heater II (4)
Switch (12) control heating is controlled by grouping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721802665.XU CN207756012U (en) | 2017-12-21 | 2017-12-21 | Air heated type ammonia sky mixing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721802665.XU CN207756012U (en) | 2017-12-21 | 2017-12-21 | Air heated type ammonia sky mixing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207756012U true CN207756012U (en) | 2018-08-24 |
Family
ID=63187608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721802665.XU Expired - Fee Related CN207756012U (en) | 2017-12-21 | 2017-12-21 | Air heated type ammonia sky mixing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207756012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114748989A (en) * | 2021-01-08 | 2022-07-15 | 中冶长天国际工程有限责任公司 | Ammonia dilution control method and device and readable storage medium |
-
2017
- 2017-12-21 CN CN201721802665.XU patent/CN207756012U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114748989A (en) * | 2021-01-08 | 2022-07-15 | 中冶长天国际工程有限责任公司 | Ammonia dilution control method and device and readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180824 Termination date: 20201221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |