CN205550025U - A additive distribution injection apparatus for SNCR flue gas denitration system - Google Patents
A additive distribution injection apparatus for SNCR flue gas denitration system Download PDFInfo
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- CN205550025U CN205550025U CN201620135910.5U CN201620135910U CN205550025U CN 205550025 U CN205550025 U CN 205550025U CN 201620135910 U CN201620135910 U CN 201620135910U CN 205550025 U CN205550025 U CN 205550025U
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- China
- Prior art keywords
- compressed air
- additive
- spray gun
- valve
- flue gas
- 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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- 239000000654 additive Substances 0.000 title claims abstract description 68
- 230000000996 additive effect Effects 0.000 title claims abstract description 67
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000003546 flue gas Substances 0.000 title claims abstract description 22
- 238000002347 injection Methods 0.000 title claims abstract description 19
- 239000007924 injection Substances 0.000 title claims abstract description 19
- 239000007921 spray Substances 0.000 claims abstract description 38
- 239000000243 solution Substances 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000889 atomisation Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 10
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 235000013877 carbamide Nutrition 0.000 description 1
- 239000012560 cell impurity Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model provides an additive distribution injection apparatus for SNCR flue gas denitration system, include: an at least spray gun, the spray gun has spray gun entry and spray gun cooling mouth, the intercommunication an at least compressed air pipeline of a spray gun entry and a compressed air unit, the intercommunication a spray gun entry and an additive conveying unit's an at least additive solution pipeline, the compressed air pipe way simultaneously through branch road intercommunication extremely spray gun cooling mouth, the compressed air pipe way has set gradually a filter, an automatically controlled valve, pressure instruction changer, a check valve, a relief pressure valve and manometer, additive solution pipeline has set gradually a needle valve, a flowmeter and a manometer. Can realize additive solution and compressed air flow accurate control, real time monitoring to guarantee the atomization effect of additive solution, be provided with reserve bypass and safety device simultaneously.
Description
Technical field
This utility model relates to gas denitrifying technology field, is specifically related to a kind of additive for SNCR flue gas denitrification system and distributes
Injection apparatus.
Background technology
Nitrogen oxides (NOx) is a kind of common atmosphere pollution, and its discharge capacity presents the trend raised year by year.The most conventional
Discharged nitrous oxides control measure include Combustion Process Control and denitrating flue gas, and in multiple gas denitrifying technology, selectivity is non-urges
Change reduction (SNCR) technology, as one therein, has and installs the feature that transformation is simple, with low cost, got more and more
Application.
The principle of SNCR technology is that ammonia reducing agent sprays into burner hearth 850～the region of 1050 DEG C, is reduced to by the nitrogen oxides in flue gas
N2.The reducing agent that SNCR gas denitrifying technology is conventional is ammonia and carbamide.In experimentation, the denitration efficiency of SNCR technology can
Reach 80～90%；But in Practical Project, it is limited by the limitation that reaction temperature interval changes, reducing agent mixes with smoke contacts
Deng various factors, SNCR technology is applied to the denitration efficiency that CFBB can reach and is only about 60%, and answers
For the denitration efficiency of coal-powder boiler less than 40%.
Improve the method that the denitration effect of SNCR technology can use additive, additive is mixed with reducing agent and sprays into denitration region
React.Additive can be effectively improved the temperature impact on denitration efficiency, can widen temperature window, reduce reaction temperature,
Additive can also reduce ammonia slip levels, makes SNCR technology better meet engineer applied requirement.
Currently for the more existing patents of SNCR additive: Chinese patent 200810102373.4 propose a kind of with microfine coal,
Natural gas or the SNCR denitration method that synthesis gas is additive, Chinese patent 201410040857.6, Chinese patent
200810209608.X proposes the SNCR denitration method as additive with hydrogen and biomass gasified gas respectively, though above-mentioned patent
So propose the type of additive, but because lacking the concrete introduction adding equipment, it is impossible to directly apply to Practical Project；China is specially
Although profit 201210300879.2 and Chinese patent 201210327034.2 give the most concrete SNCR additive relevant device
And flow process, but design by a relatively simple, do not account for the complex conditions of actual application, lack the effective protection to equipment, need
To improve further.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is to provide a kind of interpolation for SNCR flue gas denitrification system
Agent distribution injection apparatus, it is possible to realize additive solution and accurately control with compressed air require, monitor in real time, and ensure additive
The atomizing effect of solution, is provided with backup bypass and safety equipment simultaneously.
For reaching above-mentioned purpose, the concrete technical scheme that this utility model is taked is:
A kind of additive for SNCR flue gas denitrification system distributes injection apparatus, including:
At least one spray gun, described spray gun has a gun inlets and a spray gun cooling vent；
Connect described gun inlets and at least one compressed air line of a compressed air unit；
Connect at least one additive solution pipeline of described gun inlets and an additive supply unit；
Described compressed air line is communicated to described spray gun cooling vent by a branch road simultaneously；
Described compressed air line be disposed with a filter, an electrically-controlled valve, a pressure display transformer, a check-valves, one
Air relief valve and Pressure gauge；
Described additive solution pipeline is disposed with a needle-valve, flow meters and a Pressure gauge.
Further, described branch road is provided with a cooling hand-operated valve.
Further, a first manual valve it is provided with between described filter and described compressed air unit；Described filter is with described
One second hand-operated valve it is provided with between electrically-controlled valve；One the 3rd hand-operated valve it is provided with between described electrically-controlled valve and described pressure display transformer.
Further, described compressed air line is connected with described gun inlets by an air hose；Described air hose and institute
State and between air relief valve and Pressure gauge, be provided with one the 4th hand-operated valve.
Further, be provided with between described filter and pressure display transformer with described electrically-controlled valve the compressed air that connects by
Road, the bypass of described compressed air is provided with one the 5th hand-operated valve.
Further, one the 6th hand-operated valve it is provided with between described effusion meter and described Pressure gauge.
Further, described additive solution pipeline is connected with described gun inlets by an additive flexible pipe；Described additive is soft
It is provided with one the 7th hand-operated valve between pipe and described Pressure gauge.
Further, described spray gun quantity is multiple, and a plurality of described compressed air line connects multiple described spray gun the most simultaneously
Gun inlets and spray gun cooling vent also connect described compressed air unit jointly；A plurality of described additive solution pipeline connects the most simultaneously
Lead to the gun inlets of multiple described spray guns and jointly connect described additive supply unit.
By taking technique scheme, this utility model has the advantages that
(1) modularity: compressed air line, additive solution pipeline, spray gun and associated pipe component set are become unified dividing
Joining injection apparatus unit, function intensity is high, and Row control becomes apparent from, and facilitates engineer applied；
(2) controllability: compressed air line and additive solution pipeline are respectively arranged with corresponding pressure, flow measuring point, permissible
Monitor the respective flowing of both compressed air and additive solution in real time, control as SNCR flue gas denitrification system entirety successively
Foundation, feed back to system related device, adjust in time and control；
(3) safety: compressed air line is provided with respective branch, can switch to branch road in time when breaking down or overhaul,
Improve system run all right, compressed air line is provided with filter, effectively can filter with convection cell impurity, protect
Card security of system reliability service, compressed air line is provided with check-valves, can effectively prevent gas backflow from being caused upstream equipment
Impact；
(4) engineering adaptability: compressed air line and additive solution line end are hose connection, installs behaviour on the spot to engineering
Making there is a more preferable adaptability, Practical Project uses branched spray gun, can use a plurality of compressed air and additive solution pipeline, branched
The mode sequentially arranged of spray gun, forms device group, it is simple to engineer applied.
Accompanying drawing explanation
Fig. 1 is for the additive distribution injection apparatus schematic diagram of SNCR flue gas denitrification system.
Fig. 2 arranges schematic diagram for the additive distribution injection apparatus of SNCR flue gas denitrification system.
Description of reference numerals: YS-compressed air unit；TJJ-additive supply unit；01,22,23,24,25 compression sky
Air pipe；02 first manual valve；03 filter；04 second hand-operated valve；05 electrically-controlled valve；06 the 3rd hand-operated valve；
07 compressed air bypass；08 the 5th hand-operated valve；09 pressure display transformer；10 check-valves；11 air relief valve and pressure
Power table；12 the 4th hand-operated valves；13 flexible pipes；14 cooling hand-operated valves；15,26,27,28,29 additive solution pipe
Road；16 needle-valves；17 effusion meters；18 the 6th hand-operated valves；20 the 7th hand-operated valves；19 Pressure gauges；21 flexible pipes；
22,30,31,32,33 spray gun.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clear,
Complete description, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.
Based on the embodiment in this utility model, the institute that those of ordinary skill in the art are obtained under not making creative work premise
There are other embodiments, broadly fall into the scope of this utility model protection.Coordinate institute's accompanying drawing that the features and advantages of the present invention are made in detail below
Describe in detail bright.
As it is shown in figure 1, in one embodiment, it is provided that a kind of additive for SNCR flue gas denitrification system distributes injection apparatus,
A kind of additive for SNCR flue gas denitrification system distributes injection apparatus, including: spray gun 22, spray gun 22 has a spray gun and enters
Mouth and a spray gun cooling vent；Connection gun inlets and the compressed air line 01 of compressed air unit YS；Connection gun inlets and
The additive solution pipeline 15 of additive supply unit TJJ；It is cold that compressed air line 01 is communicated to spray gun by a branch road simultaneously
But mouth；Compressed air line 01 be disposed with filter 03, electrically-controlled valve 05, pressure display transformer 09, check-valves 10,
Air relief valve and Pressure gauge 11；Additive solution pipeline 15 is disposed with needle-valve 16, effusion meter 17 and Pressure gauge 19.
For the ease of stream control, described branch road is provided with cooling hand-operated valve 14.Filter 03 and compressed air unit YS it
Between be provided with first manual valve 02；The second hand-operated valve 04 it is provided with between filter 03 and electrically-controlled valve 05；Electrically-controlled valve 05 refers to pressure
Show and between transmitter 09, be provided with the 3rd hand-operated valve 06.Compressed air line 01 is connected with gun inlets by air hose 13；
It is provided with the 4th hand-operated valve 12 between air hose 13 and air relief valve and Pressure gauge 11.Filter 03 and pressure display transformer 09
Between be provided with electrically-controlled valve 05 and connect compressed air bypass 07, compressed air bypass 07 on be provided with the 5th hand-operated valve 08.
It is provided with the 6th hand-operated valve 18 between effusion meter 17 and Pressure gauge 19.Additive solution pipeline 15 is by additive flexible pipe 21 and institute
State gun inlets connection；The 7th hand-operated valve 20 it is provided with between additive flexible pipe 21 and Pressure gauge 19.
In running, compressed air line starts with boiler plant simultaneously, and compressed air, after air relief valve reduces pressure, enters spray
Rifle cooling position cools down, and prevents spray gun from being corroded by high-temperature flue gas.After SNCR system start-up, compressed air and additive solution
Flowing into from gun inlets, additive solution is atomized by compressed air, sprays into flue relevant position and carries out SNCR and carry validity response.
Compressed air line is when properly functioning, and compressed air bypass valve is closed, and breaks down at main line or needs
Time to be overhauled, first turn on the 5th hand-operated valve, close the electrically-controlled valve 05 in parallel with compressed air bypass and hand-operated valve the most successively,
Compressed air bypass is i.e. come into operation, it is ensured that SNCR denitration system safe and stable operation.
Meanwhile, compressed air and the pressure of additive solution and flow are measured and are transmitted by the measuring equipment of respective line to controlling
System, control system can accurately control the flow regime of compressed air and additive solution successively, and the electrodynamic valve that pipeline is arranged can
Respective line flow is regulated in real time according to signal instruction, to meet corresponding flow and atomization requirement.
It addition, compressed air line is provided with corresponding filter, cause corrosive wear to prevent upstream impurity from entering upstream device
Or blocking.Compressed air line is provided with check-valves, prevents gas backstreaming from the equipment such as upstream electric control pump are caused damage.Compression sky
Air pipe and additive solution line end are hose connection, and engineering is installed operation on the spot more preferable adaptability.
As in figure 2 it is shown, a plurality of compressed air line 22,23,24,25 and additive solution pipeline can be used in actual applications
26,27,28,29, the mode sequentially arranged of branched spray gun 30,31,32,33, form device group, it is simple to engineer applied.
Claims (8)
1. the additive distribution injection apparatus for SNCR flue gas denitrification system, it is characterised in that including:
At least one spray gun, described spray gun has a gun inlets and a spray gun cooling vent；
Connect described gun inlets and at least one compressed air line of a compressed air unit；
Connect at least one additive solution pipeline of described gun inlets and an additive supply unit；
Described compressed air line is communicated to described spray gun cooling vent by a branch road simultaneously；
Described compressed air line is disposed with a filter, an electrically-controlled valve, a pressure display transformer, a check-valves, an air relief valve and Pressure gauge；
Described additive solution pipeline is disposed with a needle-valve, flow meters and a Pressure gauge.
2. the additive distribution injection apparatus for SNCR flue gas denitrification system as claimed in claim 1, it is characterised in that be provided with a cooling hand-operated valve on described branch road.
3. the additive distribution injection apparatus for SNCR flue gas denitrification system as claimed in claim 1, it is characterised in that be provided with a first manual valve between described filter and described compressed air unit；One second hand-operated valve it is provided with between described filter and described electrically-controlled valve；One the 3rd hand-operated valve it is provided with between described electrically-controlled valve and described pressure display transformer.
4. the additive distribution injection apparatus for SNCR flue gas denitrification system as claimed in claim 3, it is characterised in that described compressed air line is connected with described gun inlets by an air hose；One the 4th hand-operated valve it is provided with between described air hose and described air relief valve and Pressure gauge.
5. the additive distribution injection apparatus for SNCR flue gas denitrification system as claimed in claim 4, it is characterized in that, be provided with between described filter and pressure display transformer with described electrically-controlled valve and connect one compressed air bypass, described compressed air bypass on be provided with one the 5th hand-operated valve.
6. the additive distribution injection apparatus for SNCR flue gas denitrification system as claimed in claim 5, it is characterised in that be provided with one the 6th hand-operated valve between described effusion meter and described Pressure gauge.
7. the additive distribution injection apparatus for SNCR flue gas denitrification system as claimed in claim 6, it is characterised in that described additive solution pipeline is connected with described gun inlets by an additive flexible pipe；One the 7th hand-operated valve it is provided with between described additive flexible pipe and described Pressure gauge.
8. the additive distribution injection apparatus for SNCR flue gas denitrification system as claimed in claim 1, it is characterized in that, described spray gun quantity is multiple, and a plurality of described compressed air line connects the gun inlets of multiple described spray gun and spray gun cooling vent the most simultaneously and jointly connects described compressed air unit；A plurality of described additive solution pipeline connects the gun inlets of multiple described spray gun the most simultaneously and jointly connects described additive supply unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620135910.5U CN205550025U (en) | 2016-02-23 | 2016-02-23 | A additive distribution injection apparatus for SNCR flue gas denitration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620135910.5U CN205550025U (en) | 2016-02-23 | 2016-02-23 | A additive distribution injection apparatus for SNCR flue gas denitration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205550025U true CN205550025U (en) | 2016-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620135910.5U Expired - Fee Related CN205550025U (en) | 2016-02-23 | 2016-02-23 | A additive distribution injection apparatus for SNCR flue gas denitration system |
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| Country | Link |
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| CN (1) | CN205550025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647320A (en) * | 2019-01-10 | 2019-04-19 | 光大环保能源（江阴）有限公司 | A kind of liquid alkaline deacidification system using pneumatic liquid alkaline spray gun |
-
2016
- 2016-02-23 CN CN201620135910.5U patent/CN205550025U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647320A (en) * | 2019-01-10 | 2019-04-19 | 光大环保能源（江阴）有限公司 | A kind of liquid alkaline deacidification system using pneumatic liquid alkaline spray gun |
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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: 20160907 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |