CN207254045U - One kind removes excess NH in flue gas3Device - Google Patents
One kind removes excess NH in flue gas3Device Download PDFInfo
- Publication number
- CN207254045U CN207254045U CN201720772657.9U CN201720772657U CN207254045U CN 207254045 U CN207254045 U CN 207254045U CN 201720772657 U CN201720772657 U CN 201720772657U CN 207254045 U CN207254045 U CN 207254045U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- flue gas
- atomized spray
- excess
- spray pipe
- 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.)
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- 239000003546 flue gas Substances 0.000 claims abstract description 39
- 238000010521 absorption reaction Methods 0.000 claims abstract description 32
- 239000007921 spray Substances 0.000 claims abstract description 31
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000428 dust Substances 0.000 claims abstract description 18
- 238000005453 pelletization Methods 0.000 claims abstract description 15
- 230000001133 acceleration Effects 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 20
- 229910052799 carbon Inorganic materials 0.000 abstract description 13
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000843 powder Substances 0.000 abstract description 6
- 238000001179 sorption measurement Methods 0.000 abstract description 5
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000007689 inspection Methods 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 11
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002663 nebulization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses one kind to remove excess NH in flue gas3Device, it splices between SCR denitration system and dust pelletizing system, it includes adsorbing pipeline and atomized spray pipe, and the atomized spray pipe penetrates the perisporium of absorption pipeline and is fixed on the perisporium for adsorbing pipeline；The front end in wherein described adsorption tube road is combined with an acceleration pipeline for being used to connect SCR denitration system end；The aperture of the acceleration pipeline is tapered from front to back.The utility model in the front end of absorption pipeline by being combined with aperture acceleration pipeline tapered from front to back, flow velocity of the flue gas after SCR denitration system is handled in pipeline is adsorbed can be improved, so that the active powdered carbon of atomized spray pipe inspection is sufficiently mixed with flue gas, active powdered carbon is effectively increased to the NH in flue gas3Adsorption efficiency, the effective generation for reducing ammonium hydrogen sulfate powder, slow down the corrosion of dust pelletizing system, extends the service life and dust removing effects of dust pelletizing system, save enterprise's O＆M cost significantly.
Description
Technical field
Field of environment protection is the utility model is related to, particularly relates to excess NH in a kind of removal flue gas3Device.
Background technology
Recently as the continuous lifting of national requirements for environmental protection, many places in the whole nation use efficient Collaborative Control technology pair
The further extending capacity reformation of coal-burning power plant's denitration desulfurization dust-removal system, makes unit flue gas pollutant reach the target of minimum discharge, i.e.,
It is required that the concentration of flue dust, sulfur dioxide and nitrogen oxides is not higher than 10mg/Nm3、35mg/Nm3With 50 mg/Nm3, generally first use
SCR denitration system realizes denitration, then using bag filter come dedusting.
Links have a stronger strong point of blowdown control ability in minimum discharge Collaborative Control, but their also bands at the same time
Carry out detrimental effect, particularly in SCR denitration system, in order to improve nitrogen oxide removal efficiency, often spray into excess of ammonia, lead
Cause the escaping of ammonia high, the ammonia part after escape and the SO in flue gas3Reaction produces ammonium hydrogen sulfate, does not participate in the ammonia of reaction with cigarette
Gas is discharged into air after sulfur removal technology, causes the secondary pollution of ammonia.Ammonium hydrogen sulfate powder easy moisture absorption when temperature is less than 170 DEG C becomes
It is glutinous, the higher influence unit load of dust pelletizing system operation pressure is easily led to, the ammonium hydrogen sulfate powder that the moisture absorption becomes after sticking can adhere to and corruption
Losing the equipment of downstream dust pelletizing system influences service life and the dust removing effects of dust pelletizing system.If specifically, dust pelletizing system using
Bag filter, the ammonium hydrogen sulfate powder that the moisture absorption becomes after sticking can corrode babinet and so that filter bag causes because of oxidation corrosion premature failure
Exceeded, core component of the filter bag as sack cleaner is discharged, the high efficiency of strainability is to ensure that minimum discharge system is steady
The important step of operation, it is therefore desirable to have rational scheme effectively to remove NH excessive in flue gas3。
Activated carbon injection apparatus is mostly used to spray active powdered carbon directly into flue to remove mistake in flue gas at present
The NH of amount3, there are problems with practical applications for the device：Using single jet pipe, the activated carbon powder of ejection is excessively concentrated,
Whole flue cross section can not be distributed in, activated carbon is not easy to carry out sufficiently contacting mixing with flue gas, excess NH in flue gas3Removal
Effect is poor.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, there is provided one kind removes excess NH in flue gas3Device, can carry
Excess NH in high flue gas3Removal rate, reduce the generation of ammonium hydrogen sulfate, ensure the even running of dust pelletizing system, while reduce ammonia
Secondary pollution.
In order to achieve the above objectives, the solution of the utility model is：
One kind removes excess NH in flue gas3Device, its splice between SCR denitration system and dust pelletizing system, it includes
Pipeline and atomized spray pipe are adsorbed, the atomized spray pipe penetrates the perisporium of absorption pipeline and is fixed on the perisporium of absorption pipeline
On；The front end in wherein described adsorption tube road is combined with an acceleration pipeline for being used to connect SCR denitration system end；The accelerating tube
The aperture in road is tapered from front to back.
The atomized spray pipe is at least 3, each atomized spray pipe at grade in circular ring shape be equally spaced in
On the perisporium for adsorbing pipeline, the radial direction of the direction of each atomized spray pipe along absorption pipeline.
Several branch pipes are distributed with the atomized spray pipe, each branch pipe is in same plane, the end of each branch pipe
End is connected with the vertical elbow towards absorption rear end of pipeline, and the elbow other end is connected with atomizer.
Between several branch pipes on the atomized spray pipe are adjacent at intervals of 5~8cm.
The rear end of the absorption pipeline is combined with the deceleration pipeline of aperture flaring from front to back.
Ratio between the minimum-value aperture of the deceleration pipeline and the maximum diameter of hole of deceleration pipeline is 1:1.5 to 1:2.
Ratio between the maximum diameter of hole for accelerating the minimum-value aperture of pipeline and accelerating pipeline is 1:1.5 to 1:2.
The aperture of the absorption pipeline immobilizes.
With the above structure, the utility model is tapered from front to back by being combined with aperture in the front end of absorption pipeline
Accelerate pipeline, flow velocity of the flue gas after SCR denitration system is handled in pipeline is adsorbed can be improved so that atomized spray pipe sprays
Active powdered carbon and the flue gas penetrated are sufficiently mixed, and effectively increase active powdered carbon to the NH in flue gas3Adsorption efficiency, effectively subtract
The generation of few ammonium hydrogen sulfate powder, slow down the corrosion of dust pelletizing system, extends service life and the dedusting of dust pelletizing system significantly
Effect, saves enterprise's O＆M cost.The utility model is also inhaled by the way that the active powdered carbon distribution of at least 3 atomized spray pipes is whole
The section of attached pipeline, is further ensured that the contact area of active powdered carbon and flue gas.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the front view of the utility model；
Fig. 3 is the side view of the utility model；
Fig. 4 is the top view of the utility model；
Fig. 5 is the structure diagram of the atomized spray pipe of the utility model；
Fig. 6 is the partial structural diagram of the atomized spray pipe of the utility model.
Embodiment
In order to which the technical solution of the utility model is explained further, below by specific embodiment come to the utility model into
Row elaborates.
As shown in Figures 1 to 6, the utility model discloses excess NH in a kind of removal flue gas3Device, its splice in
Between SCR denitration system A and dust pelletizing system B, the utility model is a kind of to remove excess NH in flue gas3Device include absorption pipeline
1 and atomized spray pipe 2, the atomized spray pipe 2 penetrates the perisporium of absorption pipeline 1 and is fixed on the perisporium of absorption pipeline 1.
The key of the utility model is：Coordinate shown in Fig. 1 to Fig. 4, the front end of the absorption pipeline 2 is combined with an aperture
Acceleration pipeline 3 tapered from front to back；It is described to accelerate pipeline 3 to be used for the end for connecting SCR denitration system A.The utility model leads to
Cross and accelerate the aperture tapered configuration of pipeline 3 to improve stream of the flue gas in pipeline 1 is adsorbed after SCR denitration system A processing
Speed so that the active powdered carbon of atomized spray pipe A injections is sufficiently mixed with flue gas, effectively increases active powdered carbon in flue gas
NH3Adsorption efficiency, the effective generation for reducing ammonium hydrogen sulfate powder, slow down the corrosion of dust pelletizing system B, extends and remove significantly
The service life and dust removing effects of dirt system B, saves enterprise's O＆M cost.Preferably, the length of the absorption pipeline 1 should expire
The residence time of sufficient flue gas inside it is 0.2s~0.5s, during ensureing that flue gas is fully mixed with active powdered carbon
Between；It is described absorption pipeline 1 aperture can immobilize, accelerate pipeline 3 minimum-value aperture with accelerate pipeline 3 maximum diameter of hole it
Between ratio be 1:1.5 to 1:2.
Further, coordinate shown in Fig. 1 and Fig. 4, the atomized spray pipe 2 is at least 3, is preferably 4, each atomization spray
Penetrate pipe 2 at grade in circular ring shape be equally spaced in absorption pipeline 1 perisporium on, the direction edge of each atomized spray pipe 2
The radial direction of absorption pipeline 1；By the way that at least 3 atomized spray pipes 2 can whole section for adsorbing pipeline 1 of activated carbon powder distribution
Face, is further ensured that the contact area of active powdered carbon and flue gas, more improves active powdered carbon to the NH in flue gas3Absorption effect
Rate.As shown in Figure 5 and Figure 6, several branch pipes 21 are distributed with the atomized spray pipe 2, each branch pipe 21 is in same flat
Face, the interval between adjacent branch pipe 21 can be 5~8cm, and the end of each branch pipe 21 is connected with towards 1 rear end of absorption pipeline
Vertical elbow 22,22 other end of elbow are connected with atomizer 23 so that and active powdered carbon is to move towards injection along flue gas,
Can effective erosive wear and blocking of the reducing smoke to atomizer 23.Preferably, between the adjacent atomizer 23
Nebulization region Duplication should reach 10~15% and be advisable, to ensure that active carbon powder is uniformly distributed in cutting for whole absorption pipeline 1
Face.
Further, to ensure the filter effect of follow-up dust pelletizing system B, it should reduce and remove excess NH3The stream of flue gas afterwards
Speed, therefore the rear end of the absorption pipeline 1 is combined with the deceleration pipeline 4 of aperture flaring from front to back；The deceleration pipeline 4 is most
Ratio between small-bore and the maximum diameter of hole of deceleration pipeline is 1:1.5 to 1:2.When eliminating NH3Flue gas pass through deceleration tube
During road 4, since the sectional area of deceleration pipeline 4 becomes larger, the flow velocity of flue gas reduces.
The product form and style of above-described embodiment and schema and non-limiting the utility model, any technical field
The appropriate change or modification that those of ordinary skill does it, all should be regarded as not departing from the patent category of the utility model.
Claims (8)
1. one kind removes excess NH in flue gas3Device, its splice between SCR denitration system and dust pelletizing system, it include adsorb
Pipeline and atomized spray pipe, the atomized spray pipe penetrate the perisporium of absorption pipeline and are fixed on the perisporium of absorption pipeline；Its
It is characterized in that：The front end of the absorption pipeline is combined with an acceleration pipeline for being used to connect SCR denitration system end；The acceleration
The aperture of pipeline is tapered from front to back.
2. excess NH in a kind of removal flue gas as claimed in claim 13Device, it is characterised in that：The atomized spray pipe is extremely
It is 3 less, each atomized spray pipe is equally spaced on the perisporium of absorption pipeline in circular ring shape at grade, and each is atomized
Radial direction of the direction of playpipe along absorption pipeline.
3. excess NH in a kind of removal flue gas as claimed in claim 1 or 23Device, it is characterised in that：The atomized spray
Several branch pipes are distributed with pipe, each branch pipe is in same plane, and the end of each branch pipe is connected with towards absorption pipeline
The vertical elbow of rear end, the elbow other end are connected with atomizer.
4. excess NH in a kind of removal flue gas as claimed in claim 33Device, it is characterised in that：On the atomized spray pipe
Several branch pipes it is adjacent between at intervals of 5~8cm.
5. excess NH in a kind of removal flue gas as claimed in claim 13Device, it is characterised in that：After the absorption pipeline
End is combined with the deceleration pipeline of aperture flaring from front to back.
6. excess NH in a kind of removal flue gas as claimed in claim 53Device, it is characterised in that：The deceleration pipeline is most
Ratio between small-bore and the maximum diameter of hole of deceleration pipeline is 1:1.5 to 1:2.
7. excess NH in a kind of removal flue gas as described in claim 1 or 63Device, it is characterised in that：The acceleration pipeline
Minimum-value aperture and accelerate pipeline maximum diameter of hole between ratio be 1:1.5 to 1:2.
8. excess NH in a kind of removal flue gas as claimed in claim 13Device, it is characterised in that：The hole of the absorption pipeline
Footpath immobilizes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720772657.9U CN207254045U (en) | 2017-06-28 | 2017-06-28 | One kind removes excess NH in flue gas3Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720772657.9U CN207254045U (en) | 2017-06-28 | 2017-06-28 | One kind removes excess NH in flue gas3Device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207254045U true CN207254045U (en) | 2018-04-20 |
Family
ID=61926181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720772657.9U Active CN207254045U (en) | 2017-06-28 | 2017-06-28 | One kind removes excess NH in flue gas3Device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207254045U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837650A (en) * | 2018-06-24 | 2018-11-20 | 江苏兰丰环保科技有限公司 | A kind of automatic desulfurating dust-removing equipment |
| CN112237826A (en) * | 2019-07-16 | 2021-01-19 | 沈阳铝镁科技有限公司 | Roasting flue gas purification device and treatment method |
-
2017
- 2017-06-28 CN CN201720772657.9U patent/CN207254045U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837650A (en) * | 2018-06-24 | 2018-11-20 | 江苏兰丰环保科技有限公司 | A kind of automatic desulfurating dust-removing equipment |
| CN112237826A (en) * | 2019-07-16 | 2021-01-19 | 沈阳铝镁科技有限公司 | Roasting flue gas purification device and treatment method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 361100 No. 1178-1188 Spring Road, Xiangan District, Fujian, Xiamen Patentee after: Xiamen Zhongchuang Environmental Protection Technology Co., Ltd Address before: 361100 No. 1178-1188 Spring Road, Xiangan District, Fujian, Xiamen Patentee before: XIAMEN SAVINGS ENVIRONMENTAL Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |