CN203725030U - SCR (Selective Catalytic Reduction) denitration system and ammonia spraying device thereof - Google Patents
SCR (Selective Catalytic Reduction) denitration system and ammonia spraying device thereof Download PDFInfo
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- CN203725030U CN203725030U CN201420110317.6U CN201420110317U CN203725030U CN 203725030 U CN203725030 U CN 203725030U CN 201420110317 U CN201420110317 U CN 201420110317U CN 203725030 U CN203725030 U CN 203725030U
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- Prior art keywords
- ammonia
- spraying device
- dish
- flue gas
- flow direction
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- Expired - Lifetime
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 335
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 142
- 238000005507 spraying Methods 0.000 title claims abstract description 61
- 238000010531 catalytic reduction reaction Methods 0.000 title abstract description 3
- 239000003054 catalyst Substances 0.000 claims abstract description 20
- 239000007921 spray Substances 0.000 claims description 69
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 58
- 239000003546 flue gas Substances 0.000 claims description 58
- 239000007789 gas Substances 0.000 claims description 29
- FWQHNLCNFPYBCA-UHFFFAOYSA-N fluoran Chemical compound C12=CC=CC=C2OC2=CC=CC=C2C11OC(=O)C2=CC=CC=C21 FWQHNLCNFPYBCA-UHFFFAOYSA-N 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 23
- 239000000779 smoke Substances 0.000 abstract description 16
- 239000000203 mixture Substances 0.000 abstract description 5
- 238000003756 stirring Methods 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 239000008246 gaseous mixture Substances 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000009467 reduction Effects 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000013019 agitation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model discloses an SCR (Selective Catalytic Reduction) denitration system and an ammonia spraying device thereof. The ammonia spraying device comprises a plurality of ammonia spraying tube stacks, wherein the ammonia spraying tube stacks are arranged in a smoke channel of the SCR denitration system sequentially at intervals in direction perpendicular to the smoke flow direction; each ammonia spraying tube stack comprises at least one ammonia spraying pipe; each ammonia spraying pipe is provided with a plurality of ammonia nozzles; the ammonia spraying device further comprises a plurality of encircling flow disc groups which are arranged in the smoke channel sequentially at intervals in direction perpendicular to the smoke flow direction; each encircling flow disc group comprises at least one encircling flow disc; each encircling flow disc relative to each ammonia nozzle is arranged on the downstream side of the smoke flow direction; and an included angle alpha is formed between an incident flow surface of each encircling flow disc and the smoke flow direction and is greater than 0 degree and less than or equal to 90 degrees. With the adoption of the ammonia spraying device, when ammonia and smoke flow through the incident flow surfaces of the encircling flow disc to lee sides of the encircling flow discs, an eddying effect is formed on the lee sides; under intensive stirring of the eddying effect, the smoke and ammonia are mixed intensively and continuously; and ammonia concentration distribution in a gas mixture is relatively uniform before the gas mixture reaches a front section of a catalyst layer.
Description
Technical field
The utility model relates to ammonia and the flue gas hybrid technology field of SCR denitrating system, particularly a kind of SCR denitrating system and ammonia-gas spraying device thereof.
Background technology
The nitrogen oxide (NOx) producing in fuel combustion process has become main atmosphere pollution, its excessive emissions can cause the series of environmental problems such as acid rain, photochemical fog, depletion of the ozone layer, and therefore controlling and administer nitrogen oxides pollution is the large vital task of environmental protection sciemtifec and technical sphere one.At present, SCR (SCR) denitration technology is to apply in the world the most ripe gas denitrifying technology, the denitrating flue gas market that it is simple with apparatus structure, good reliability, denitration efficiency advantages of higher have occupied the world 80%.
Structure and the operation principle thereof of SCR denitrating system are now described in conjunction with Fig. 1, SCR denitrating system comprise exhaust gases passes 1 ', and along flue gas flow direction be set in turn in the deflector 2 of exhaust gases passes 1 ' interior ', ammonia-gas spraying device 3 ', flow straightening grid 4 ' and catalyst layer 5 ', its operation principle is by ammonia-gas spraying device 3 ' by reducing agent NH
3spray in flue gas NH
3with NO
xmixed flow is to 5 ' time of catalyst layer, under the effect of catalyst, there is redox reaction after by NO
xbe reduced to harmless N
2.
Denitration efficiency and the escaping of ammonia rate are to weigh two large important indicators of SCR denitrating system denitration performance, and NO in ammonia and flue gas
xeven mixability be a key factor that affects SCR denitration efficiency and the escaping of ammonia rate, arrive the front ammonia of catalyst and flue gas mixed effect better, distribute along catalyst layer section ammonia concentration more even, be more conducive to ammonia and nitrogen oxide catalytic reduction reaction.Therefore, in order to improve denitrating flue gas efficiency and reduce the escaping of ammonia rate, should take measures as possible to strengthen mixing of ammonia and flue gas, ammonia concentration is evenly distributed along catalyst layer section.But strengthening ammonia is usually the difficult point of SCR denitrating system design with mixing of flue gas.
Existing ammonia-gas spraying device comprises multiple spaced spray ammonia pipes, and each ammonia pipe that sprays is vertically arranged at intervals with multiple spray ammonia mouths successively, and each spray ammonia mouth axis is consistent with flue gas flow direction.Ammonia injects spray ammonia Guan Bingcong spray ammonia mouth from flow distributing system and sprays into flue gas, relies on airflow convection, concentration difference diffusion that ammonia is mixed with flue gas.
The feature of said structure ammonia-gas spraying device is, near spray ammonia mouth, ammonia concentration is high, and the ammonia concentration between spout is low, but because spout spacing is even, and spout One's name is legion, therefore the ammonia concentration of whole spray ammonia section is relatively uniform.At spray ammonia section, to the flue distance between catalyst, ammonia relies on airflow convection, concentration difference to realize ammonia and spread to low concentration from area with high mercury.In theory, before making catalyst when the diffusion of ammonia is enough strong, ammonia concentration is even, but SCR denitration Field Flow Numerical Simulation, model test and engineering practice show to rely on merely ammonia diffusion that airflow convection, concentration difference cause to be difficult to make before catalyst the ammonia CONCENTRATION DISTRIBUTION in section gaseous mixture even.
In view of this, before ammonia and flue gas gaseous mixture reach catalyst layer, before section, adopting which kind of measure to improve the uniformity of ammonia concentration in gaseous mixture, is those skilled in the art's technical problems urgently to be resolved hurrily.
Utility model content
For above-mentioned defect, the utility model provides a kind of ammonia-gas spraying device for SCR denitrating system, before section before mixed airflow reaches catalyst layer, improves the uniformity of ammonia concentration in gaseous mixture.
In order to solve the problems of the technologies described above, the utility model provides a kind of ammonia-gas spraying device for SCR denitrating system, comprise multiple row spray ammonia pipe group, multiple row spray ammonia pipe group is arranged at intervals in the exhaust gases passes of SCR denitrating system successively along vertical flue gas flow direction, and every row spray ammonia pipe group comprises at least one spray ammonia pipe, each spray ammonia pipe has multiple spray ammonia mouths; Also comprise that multiple row streams dish group, multiple row is streamed dish group and is arranged at intervals at successively in exhaust gases passes along vertical flue gas flow direction, every row stream dish group and comprise that at least one streams dish, stream dish is arranged at flue gas flow direction downstream with respect to spray ammonia mouth, the fluoran stream surface and the flue gas flow direction that stream dish are angle α setting, and 0 ° of < α≤90 °.
Compared with prior art, in ammonia-gas spraying device, setting up the multiple of said structure streams after dish group, ammonia and smoke gas flow are crossed when streaming the fluoran stream surface of dish and flowing to its lee side, to form eddy current effect at lee side, under the strong agitation of eddy current effect, flue gas and ammonia constantly fully mix, and make gaseous mixture to arrive before catalyst layer before section in it ammonia CONCENTRATION DISTRIBUTION comparatively even, thereby overcome SCR denitrating system design difficulty, be conducive to improve SCR denitration efficiency, reduce the escaping of ammonia rate.There is important actual application value simultaneously, be particularly suitable for that coal-burning power plant interferes, complex-shaped, the ammonia of flue mixes with flue gas apart from short denitration transformation and denitration and carry and imitating in engineering.
In a preferred version of the present utility model, ammonia-gas spraying device also comprises conducting element, and described conducting element is fixedly connected on described exhaust gases passes and has and is arranged at gap between the described spray ammonia pipe group of adjacent two row, for partial fume being guided to spray ammonia region.Conducting element be shaped as regular triangular prism, a lateral vertical of described regular triangular prism in described flue gas flow direction setting, its other two sides respectively near the adjacent two described spray ammonia pipe groups of row and towards flue gas flow direction.
Ammonia-gas spraying device in this programme is by setting up conducting element, when smoke gas flow is during through conducting element, flue gas is by guiding spray ammonia region, triangular prism two sides, this part flue gas that is directed to spray ammonia region can meet with part ammonia, can reduce to spray the ammonia concentration deviation in ammonia region, can can improve to a certain extent spray ammonia region ammonia concentration uniformity, thereby can further improve denitration efficiency, the reduction the escaping of ammonia rate of SCR denitrating system, and then further improve the denitration performance of SCR denitrating system.
Spray ammonia pipe in another preferred version of the present utility model comprises two jet segments, Connectivity Sections and enters ammonia section, each described jet segment is interval with multiple described spray ammonia mouths vertically successively, described Connectivity Section is communicated with two described jet segments and forms " work " font structure, described enter ammonia section be positioned at the downstream of flue gas flow direction with respect to described jet segment, and be communicated with described Connectivity Section.
This programme is by further limiting the concrete structure of spray ammonia pipe, air inlet section is positioned at the downstream of flue gas flow direction with respect to jet segment, smoke gas flow forms and streams effect in the time of air inlet section, before can making ammonia and the inflow of flue gas gaseous mixture stream dish, form mixed effect definitely, thereby further improve the uniformity of ammonia concentration in gaseous mixture.
Preferably, 40 °≤α≤60 °.
Preferably, the spacing distance that streams dish group described in adjacent two row is 1000～1200mm.
Preferably, stream dish group described in every row and comprise and multiplely stream dish described in spaced, the spacing distance that streams dish described in adjacent two is 800～1000mm.
Preferably, described in stream the circle that is shaped as of dish, and its diameter is 600～800mm.
The utility model also provides a kind of SCR denitrating system, comprises exhaust gases passes and is set in turn in ammonia-gas spraying device and the catalyst layer in exhaust gases passes along flue gas flow direction, and this ammonia-gas spraying device is specially structure as above.
Because above-mentioned ammonia-gas spraying device has above-mentioned technique effect, therefore comprise that the SCR denitrating system of this ammonia-gas spraying device should have identical technique effect, therefore do not repeat them here.
Brief description of the drawings
Fig. 1 shows the typical structure schematic diagram of SCR denitrating system;
Fig. 2 shows the structural representation of a kind of detailed description of the invention of ammonia-gas spraying device that the utility model provides;
Fig. 3 shows the right TV structure schematic diagram of ammonia-gas spraying device shown in Fig. 2;
Fig. 4 shows shown in Fig. 2 the plan structure schematic diagram of multiple row spray ammonia pipe group in ammonia-gas spraying device;
Fig. 5 shows the structural representation of the another kind of detailed description of the invention of ammonia-gas spraying device that the utility model provides;
Fig. 6 shows the right TV structure schematic diagram of ammonia-gas spraying device shown in Fig. 5.
Corresponding relation in Fig. 1 between Reference numeral and all parts title:
1 ' exhaust gases passes, 2 ' deflector, 3 ' ammonia-gas spraying device, 4 ' flow straightening grid, 5 ' catalyst layer.
Corresponding relation in Fig. 2 to Fig. 6 between Reference numeral and all parts title:
1 exhaust gases passes, 31 spray ammonia pipes, 311 jet segments, 311-a spray ammonia mouth, 312 Connectivity Sections, 313 air inlet sections, 32 are streamed dish, 33 conducting elements.
Detailed description of the invention
Core of the present utility model is, a kind of SCR denitrating system and ammonia-gas spraying device thereof are provided, stream dish group by set up multiple row on existing ammonia-gas spraying device basis, make ammonia and flue gas stream dish group and fully mix under eddy current effect effect reaching to flow through before catalyst layer, to improve the uniformity of ammonia concentration in gaseous mixture, thereby improve denitration efficiency, the reduction the escaping of ammonia rate of SCR denitrating system, and then further improve the denitration performance of SCR denitrating system.
Now, in conjunction with Figure of description, the concrete structure schematic diagram of ammonia-gas spraying device provided by the utility model is described.It should be noted that, in Figure of description
represent flue gas flow direction,
represent ammonia flow to.
Refer to Fig. 2 and Fig. 3, wherein, Fig. 2 shows the structural representation of a kind of detailed description of the invention of ammonia-gas spraying device that the utility model provides, and Fig. 3 shows the right TV structure schematic diagram of ammonia-gas spraying device shown in Fig. 2.
Shown in Fig. 2 and Fig. 3, a kind of ammonia-gas spraying device for SCR denitrating system that this programme provides, comprise multiple row spray ammonia pipe group, multiple row spray ammonia pipe group is arranged at intervals in the exhaust gases passes 1 of SCR denitrating system successively along vertical flue gas flow direction, and every row spray ammonia pipe group has at least one spray ammonia pipe 31, each spray ammonia pipe 31 has multiple spray ammonia mouth 311-a; Also comprise that multiple row streams dish group, multiple row is streamed dish group and is arranged at intervals at successively in exhaust gases passes 1 along vertical flue gas flow direction, every row stream dish group comprise at least one stream dish 32, stream dish 32 is arranged at flue gas flow direction downstream with respect to spray ammonia mouth 311-a, the fluoran stream surface and the flue gas flow direction that stream dish 32 are angle α setting, and 0 ° of < α≤90 °.
Compared with prior art, the multiple row of setting up said structure on existing ammonia-gas spraying device basis is streamed after dish group, ammonia and smoke gas flow are crossed when streaming the fluoran stream surface of dish 32 and flowing to its lee side, to form eddy current effect at lee side, under the strong agitation of eddy current effect, flue gas and ammonia constantly fully mix, and make gaseous mixture to arrive before catalyst layer in it ammonia CONCENTRATION DISTRIBUTION comparatively even, thereby overcome SCR denitrating system design difficulty, be conducive to improve SCR denitration efficiency, reduce the escaping of ammonia rate.There is important actual application value simultaneously, be particularly suitable for that coal-burning power plant interferes, complex-shaped, the ammonia of flue mixes with flue gas apart from short denitration transformation and denitration and carry and imitating in engineering.
It should be noted that, through technical staff repeatedly numbered analog simulation analysis of experiments draw, while streaming dish 32 fluoran stream surface and 40 ° of smoke gas flow angles≤α≤60 °, both can reduce the laying dust amount of streaming dish 32 lee sides, can strengthen again eddy current effect make ammonia and flue gas mixing more abundant.Be appreciated that and meeting on the basis that forms eddy current effect function and assembly technology requirement, the fluoran stream surface and the smoke gas flow angle α that stream dish 32 can be other any number between 0 ° to 90 °.
In addition, further, shown in Fig. 2 and Fig. 3, this programme comprises that three row stream dish group, and every row stream dish group and comprise that 10 stream dish 32, through technical staff repeatedly numbered analog simulation analysis of experiments draw, as adjacent two the spacing distance L that stream dish group
1=1000～1200mm (millimeter), streams interior adjacent two of dish group and streams the spacing distance L that coils 32
2when=800～1000mm (millimeter), the eddy current effect that airflow passes is streamed dish generation in 32 o'clock is the strongest, can make the mixing under eddy current effect effect of ammonia and flue gas more abundant, thereby can further improve denitration efficiency, the reduction the escaping of ammonia rate of SCR denitrating system, and then further improve the denitration performance of SCR denitrating system.
Certainly, stream the arrangement of dish group and quantity and depend on the concrete structure of exhaust gases passes 1 and arrangement and the quantity of spray ammonia pipe 31 of SCR denitrating system, therefore, meeting on raising ammonia and flue gas mixed effect function and assembly technology requirement basis, arrangement and the quantity of in this programme, streaming dish group also can adopt other forms.
Additionally, stream the circle that is shaped as of dish 32, and its diameter is 600～800mm (millimeter), this programme streams shape and the size thereof of dish 32 by further restriction, can make through fluoran stream surface flow into lee side ammonia and flue gas more even, thereby can further improve while reaching catalyst layer the uniformity of ammonia concentration in gaseous mixture.Certainly, meeting on the basis that forms eddy current effect function, processing and assembly technology requirement, the shape of streaming dish 32 also can adopt square or other shapes.
The utility model also provides another embodiment of ammonia-gas spraying device, specifically refer to Fig. 5, the figure shows another detailed description of the invention of ammonia-gas spraying device provided by the utility model, the distinctive points of this embodiment and last embodiment is, ammonia-gas spraying device in present embodiment also comprises conducting element 33, this conducting element 33 is fixedly connected in exhaust gases passes 1 and has and is arranged at gap between adjacent two spray ammonia pipes 31, for by flue gas shunting and be guided in spray An Guan 31Pen An district.
Particularly, as shown in Figure 5, conducting element 33 be shaped as triangular prism, one side is vertical with flue gas flow direction to be arranged, two sides are respectively near two spray ammonia pipes 31 and towards flue gas flow direction in addition.For the ease of understanding the concrete structure of ammonia-gas spraying device in this embodiment, please also refer to Fig. 6, the figure shows the right TV structure schematic diagram of ammonia-gas spraying device shown in Fig. 6.
Ammonia-gas spraying device in this programme is by setting up conducting element 33, when smoke gas flow is during through conducting element 33, flue gas is by guiding spray ammonia region, triangular prism two sides, this part flue gas that is directed to spray ammonia region can meet with part ammonia, can reduce to spray the ammonia concentration deviation in ammonia region, can can improve to a certain extent spray ammonia region ammonia concentration uniformity, thereby can further improve denitration efficiency, the reduction the escaping of ammonia rate of SCR denitrating system, and then further improve the denitration performance of SCR denitrating system.
It should be noted that, meeting on the basis that partial fume shunting is directed to spray ammonia regional function, processing and assembly technology requirement, in this programme, conducting element 33 also can adopt other versions that those skilled in the art commonly use.
Next, describe the concrete structure that sprays ammonia pipe 31 in this programme in conjunction with Fig. 2 to Fig. 4 in detail, wherein, Fig. 4 shows shown in Fig. 2 the plan structure schematic diagram of multiple row spray ammonia pipe group in ammonia-gas spraying device.
Ammonia-gas spraying device in this programme comprises 4 row spray ammonia pipe groups, every row spray ammonia pipe group comprises spaced 3 spray ammonia pipes 31 successively, each spray ammonia pipe 31 comprises two jet segments 311, Connectivity Section 312 and air inlet section 313, each jet segment 311 is interval with multiple spray ammonia mouth 311-a along its length successively, and the opening direction of spray ammonia mouth 311-a is consistent with flue gas flow direction; Two jet segments 311 are communicated with and are " work " font structure by Connectivity Section 312, and air inlet section 313 is positioned at the downstream of flue gas flow direction with respect to jet segment 311 and is communicated with Connectivity Section 312.
This programme is by further limiting the concrete structure of spray ammonia pipe 31, air inlet section 313 is positioned at the downstream of flue gas flow direction with respect to jet segment 311, smoke gas flow forms and streams effect in the time of air inlet section 313, can make ammonia and the inflow of flue gas gaseous mixture stream dish 32 front formation mixed effect definitely, thereby further improve the uniformity of ammonia concentration in gaseous mixture.
Be appreciated that and meeting on the basis of evenly spray ammonia function, processing and assembly technology requirement, the spray ammonia pipe 31 in this programme also can adopt other conventional structures of this area.
Except above-mentioned ammonia-gas spraying device, the utility model also provides a kind of SCR denitrating system, this SCR denitrating system comprises exhaust gases passes and is set in turn in ammonia-gas spraying device and the catalyst layer in exhaust gases passes along flue gas flow direction, and wherein, ammonia-gas spraying device is specially structure as above.Be appreciated that to form the primary functional elements of this SCR denitrating system and operation principle and prior art thereof basic identical, those skilled in the art can realize completely based on prior art, therefore repeating no more again.
The foregoing is only preferred embodiment of the present utility model, do not form the restriction to the utility model protection domain.Any any amendment of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present utility model.
Claims (9)
1. the ammonia-gas spraying device for SCR denitrating system, comprise multiple row spray ammonia pipe group, described in multiple row, spraying ammonia pipe group is arranged at intervals in the exhaust gases passes of described denitrating system successively along vertical flue gas flow direction, the described spray ammonia of every row pipe group comprises at least one spray ammonia pipe (31), each described spray ammonia pipe (31) has multiple spray ammonia mouths (311-a), it is characterized in that, also comprise that multiple row streams dish group, described in multiple row, streaming dish group is arranged at intervals in described exhaust gases passes successively along vertical flue gas flow direction, described in every row, stream dish group and comprise that at least one streams dish (32), described in each, stream dish (32) is positioned at flue gas flow direction downstream with respect to described spray ammonia mouth (311-a), described fluoran stream surface and the flue gas flow direction that streams dish (32) is angle α setting, and 0 ° of < α≤90 °.
2. ammonia-gas spraying device as claimed in claim 1, it is characterized in that, also comprise conducting element (33), described conducting element (33) is fixedly connected on described exhaust gases passes and has and is arranged at gap between the described spray ammonia pipe group of adjacent two row, for flue gas being guided in spray ammonia region.
3. ammonia-gas spraying device as claimed in claim 2, it is characterized in that, described conducting element (33) be shaped as regular triangular prism, a lateral vertical of described regular triangular prism in flue gas flow direction setting, its other two sides respectively near the adjacent two described spray ammonia pipe groups of row and towards flue gas flow direction.
4. ammonia-gas spraying device as claimed any one in claims 1 to 3, it is characterized in that, each described spray ammonia pipe (31) comprises two jet segments (311), Connectivity Section (312) and enter ammonia section (313), each described jet segment (311) is interval with multiple described spray ammonia mouths (311-a) vertically successively, two described jet segments (311) are communicated with and are " work " font structure by described Connectivity Section (312), described enter ammonia section (313) be positioned at the downstream of flue gas flow direction with respect to described jet segment (311), and be communicated with described Connectivity Section (312).
5. ammonia-gas spraying device as claimed any one in claims 1 to 3, is characterized in that 40 °≤α≤60 °.
6. ammonia-gas spraying device as claimed any one in claims 1 to 3, is characterized in that, streams the spacing distance L of dish group described in adjacent two row
1=1000～1200mm.
7. ammonia-gas spraying device as claimed in claim 6, is characterized in that, streams dish group described in every row and comprises and multiplely stream dish (32) described in spaced, streams the spacing distance L of dish (32) described in adjacent two
2=800～1000mm.
8. ammonia-gas spraying device as claimed in claim 7, is characterized in that, stream the circle that is shaped as of dish (32) described in each, and its diameter is 600～800mm.
9. a SCR denitrating system, comprises exhaust gases passes and is set in turn in ammonia-gas spraying device and the catalyst layer in described exhaust gases passes along flue gas flow direction, it is characterized in that, described ammonia-gas spraying device is specially the ammonia-gas spraying device described in any one in claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110317.6U CN203725030U (en) | 2014-03-12 | 2014-03-12 | SCR (Selective Catalytic Reduction) denitration system and ammonia spraying device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110317.6U CN203725030U (en) | 2014-03-12 | 2014-03-12 | SCR (Selective Catalytic Reduction) denitration system and ammonia spraying device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203725030U true CN203725030U (en) | 2014-07-23 |
Family
ID=51195131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420110317.6U Expired - Lifetime CN203725030U (en) | 2014-03-12 | 2014-03-12 | SCR (Selective Catalytic Reduction) denitration system and ammonia spraying device thereof |
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| CN (1) | CN203725030U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105013365A (en) * | 2015-08-17 | 2015-11-04 | 宁夏宝塔石化科技实业发展有限公司 | Novel ammonia and air mixer |
| CN105631214A (en) * | 2015-12-29 | 2016-06-01 | 福建龙净环保股份有限公司 | Flue gas SCR denitration flow field numerical simulation optimization method and device |
| CN106731811A (en) * | 2017-01-13 | 2017-05-31 | 国网河南省电力公司电力科学研究院 | A kind of SCR flue gas denitrification systems ammonia-gas spraying device |
| CN106823796A (en) * | 2016-12-28 | 2017-06-13 | 华电电力科学研究院 | A kind of SCR denitration spray ammonia system for adapting to full load mode |
-
2014
- 2014-03-12 CN CN201420110317.6U patent/CN203725030U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105013365A (en) * | 2015-08-17 | 2015-11-04 | 宁夏宝塔石化科技实业发展有限公司 | Novel ammonia and air mixer |
| CN105631214A (en) * | 2015-12-29 | 2016-06-01 | 福建龙净环保股份有限公司 | Flue gas SCR denitration flow field numerical simulation optimization method and device |
| CN105631214B (en) * | 2015-12-29 | 2018-03-23 | 福建龙净环保股份有限公司 | A kind of flue gas SCR denitration Field Flow Numerical Simulation optimization method and device |
| CN106823796A (en) * | 2016-12-28 | 2017-06-13 | 华电电力科学研究院 | A kind of SCR denitration spray ammonia system for adapting to full load mode |
| CN106731811A (en) * | 2017-01-13 | 2017-05-31 | 国网河南省电力公司电力科学研究院 | A kind of SCR flue gas denitrification systems ammonia-gas spraying device |
| CN106731811B (en) * | 2017-01-13 | 2022-08-23 | 国网河南省电力公司电力科学研究院 | Ammonia spraying device of SCR flue gas denitration system |
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