CN205627457U - A dust removal defogging device and system for coal fired power plant tail flue gas - Google Patents
A dust removal defogging device and system for coal fired power plant tail flue gas Download PDFInfo
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- CN205627457U CN205627457U CN201620231320.2U CN201620231320U CN205627457U CN 205627457 U CN205627457 U CN 205627457U CN 201620231320 U CN201620231320 U CN 201620231320U CN 205627457 U CN205627457 U CN 205627457U
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- flue gas
- power plant
- tail flue
- coal
- burning power
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000003546 flue gas Substances 0.000 title claims abstract description 70
- 239000000428 dust Substances 0.000 title claims abstract description 10
- 239000003245 coal Substances 0.000 title abstract description 5
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 239000003595 mist Substances 0.000 claims description 24
- 230000003009 desulfurizing effect Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 abstract 5
- 238000007599 discharging Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Separating Particles In Gases By Inertia (AREA)
Abstract
The utility model belongs to the technical field of coal fired power plant tail flue gas handles. In order to solve at present to coal fired power plant tail flue gas dust removal defogging, there is the secondary and carries and lead to the higher and single problem of dust removal defogging plant layout mode of dirt / fog content among the exhaust tail flue gas, the utility model provides a dust removal defogging device and system for coal fired power plant tail flue gas, including the separator tube, the upper portion of this separator tube is provided with a plurality of and arranges the material seam, and the lower part of separator tube is equipped with the whirl and produces the device, and this whirl produces unit bit in the separator tube, arrange the material seam along with the parallel direction of axis of separator tube is extended, or arrange the material and stitch along the circumferencial direction extension of separator tube, or arrange the material and stitch to the spiral. Dirt / fog that the quilt got rid of to the inner wall of separator tube can pass through the utility model discloses an arranging the material seam and in time discharging, flow direction separator tube is outside to realize dirt / fog and tail flue gas's zero -touch, avoided tail flue gas to carry the secondary of dirt / fog, improved separation efficiency.
Description
Technical field
This utility model belongs to the technical field that coal-burning power plant's tail flue gas processes, and is specifically related to a kind of dedusting demister for coal-burning power plant's tail flue gas and system.
Background technology
In recent years, whole nation haze weather on a large scale gets more and more, and air pollution is the most serious on the impact of people's productive life.Reduce the pollutant emission of active service coal-burning power plant or even realize recycling, improving coal-burning power plant's level of clean production, have become as the matter of great urgency of coal fired power generation industry and Related Research Domain, and attract wide attention.As shown in Figure 1, when at present coal-burning power plant's tail flue gas dust removal being removed mist, the tail flue gas rotated enters from the entrance 41 of dedusting demister 40, under centrifugal action, dirt/mist 43 that tail flue gas Midst density is bigger is thrown toward the inwall of dedusting demister 40, and tail flue gas may proceed to flow forward and flows out from the outlet 42 of dedusting demister 40, it is achieved tail flue gas separates with dirt/mist 43, collection device (not shown) is finally used to be collected by dirt/mist 43.During tail flue gas flows to outlet 42 from the entrance 41 of dedusting demister 40, although dirt/mist 43 has been thrown toward the inwall of dedusting demister 40, but a part of dirt/mist 43 on dedusting demister 40 inwall can be involved in tail flue gas again along with the flowing of tail flue gas, form secondary droplets, cause the content of dirt/mist in the tail flue gas discharged higher, add the discharge of coal-burning power plant's pollutant, simultaneously, the discharge structure of dirt/mist is single, limits the arrangement of dedusting demister 40.
Utility model content
During in order to solve at present coal-burning power plant's tail flue gas dust removal to be removed mist, there is secondary droplets and cause the problem that in the tail flue gas discharged, dirt/mist content is higher and dedusting demister arrangement is single, the utility model proposes a kind of dedusting demister for coal-burning power plant's tail flue gas, this dedusting demister being used for coal-burning power plant's tail flue gas includes separating pipe, the top of this separation pipe is provided with several distribution slits, the bottom of described separation pipe is provided with eddy flow generator, and this eddy flow generator is positioned at described separation and manages.
Wherein, described distribution slit extends along the direction parallel with the described axis separating pipe.
Wherein, the depth direction of described distribution slit is 10-90 degree with the angle of the tangential direction of described distribution slit.
Wherein, described distribution slit extends along the circumferencial direction of described separation pipe.
Wherein, described distribution slit is spiral type.
Wherein, described distribution slit is circular port or slotted eye.
Wherein, the area of several distribution slits described accounts for the 10%-90% that described separation pipe upper face is long-pending.
Wherein, described eddy flow generator is impeller.
This utility model also proposes a kind of dedusting demister system, this dedusting demister system includes SCR denitration device, air preheater, electric dust collector, desulfurizing tower, chimney and any of the above-described kind dedusting demister for coal-burning power plant's tail flue gas, the described dedusting demister for coal-burning power plant's tail flue gas is several, it is arranged in described desulfurizing tower top, or/and in horizontal flue between described desulfurizing tower and described chimney, or/and in vertical flue between described desulfurizing tower and described chimney, or/and in described chimney.
Wherein, the described dedusting demister parallel connection for coal-burning power plant's tail flue gas is some groups, arranges in parallel or series for these some groups between the dedusting demister of coal-burning power plant's tail flue gas.
This utility model has a following beneficial effect for the dedusting demister of coal-burning power plant's tail flue gas and system:
This utility model is provided with several distribution slits for the separation pipe of the dedusting demister of coal-burning power plant's tail flue gas, after so dirt/the mist in tail flue gas is thrown toward the inwall separating pipe, dirt/mist can be discharged in time by distribution slit, flow to separate outside pipe, thus the dirt/mist being thrown toward separation inside pipe wall no longer contacts with tail flue gas, avoid the secondary droplets of tail flue gas dirt/mist to separating, improve separation efficiency.This utility model is for the dedusting demister flexible arrangement of coal-burning power plant's tail flue gas, arrangement is various, can be horizontally disposed or be arranged vertically, can be disposed at desulfurizing tower top, or/and in horizontal flue between desulfurizing tower and chimney, or/and in vertical flue between desulfurizing tower and chimney, or/and in chimney.This utility model is for the dedusting demister movement-less part of coal-burning power plant's tail flue gas, reliable, effective, easy to maintenance, cost performance is high, and there is wider Effec-tive Function parameter area, efficiently solve coal-burning power plant's load variations bigger time other separation equipment inefficiency problem of causing tail flue gas pollutant to exceed standard, it is achieved that the minimum discharge of coal-burning power plant.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the dedusting demister being currently used for coal-burning power plant's tail flue gas；
Fig. 2 is the partial schematic sectional view of the dedusting demister for coal-burning power plant's tail flue gas of this utility model embodiment one；
Fig. 3 is the cross-sectional schematic along Fig. 2 A-A direction；
Fig. 4 is a kind of preferred structure schematic diagram of the eddy flow generator of this utility model embodiment one；
Fig. 5 is the partial schematic sectional view of the dedusting demister for coal-burning power plant's tail flue gas of this utility model embodiment two；
Fig. 6 is the partial schematic sectional view of the dedusting demister for coal-burning power plant's tail flue gas of this utility model embodiment three；
Fig. 7 is the structural representation of this utility model dedusting demister system；
Fig. 8 is a kind of arrangement schematic diagram of the dedusting demister for coal-burning power plant's tail flue gas of this utility model dedusting demister system；
Fig. 9 is the another kind of arrangement schematic diagram of the dedusting demister for coal-burning power plant's tail flue gas of this utility model dedusting demister system.
Detailed description of the invention
Introduce the technical solution of the utility model below in conjunction with the accompanying drawings.
Embodiment one
As in figure 2 it is shown, the present embodiment includes separating pipe 15 for the dedusting demister of coal-burning power plant's tail flue gas, this separation pipe 15 is the cylindrical structural of hollow, inner wall smooth.The top separating pipe 15 is provided with several distribution slits 13, and the bottom separating pipe 15 is provided with eddy flow generator 12, and this eddy flow generator 12 is positioned at separation pipe 15, such as this eddy flow generator 12 and is fixedly welded on the inwall separating pipe 15.Wherein, distribution slit 13 extends along the direction parallel with the axis separating pipe 15, and distribution slit 13 can be uniformly distributed on pipe 15 separating, and the area of several distribution slits 13 accounts for and separates the 10%-90% that pipe 15 upper face is long-pending.As it is shown on figure 3, the angle of tangential direction P of the depth direction O of distribution slit 13 and distribution slit 13 can be 10-90 degree.As shown in Figure 4, eddy flow generator 12 can be impeller, and this impeller is provided with multiple dihedral vane 16.
The present embodiment is used for the dedusting demister of coal-burning power plant's tail flue gas in use, the first step, and the tail flue gas with dirt/mist enters separation pipe 15 from the directed fluid inlet 11 separating pipe 15；Second step, tail flue gas rotates generation eddy flow after flowing through the eddy flow generator 12 separated in pipe 15, and owing to dirt/fog density is relatively big, under centrifugal action, dirt/mist is thrown toward the inwall separating pipe 15；3rd step, it is thrown toward the dirt/mist separating pipe 15 inwall to be discharged by distribution slit 13, flow to separate the outside of pipe 15, and it is collected the collection of device (not shown), owing to being thrown toward the dirt/spray separating pipe 15 inwall to the outside separating pipe 15, so it is thrown toward and separates the dirt/mist of pipe 15 inwall and no longer contact with tail flue gas, it is to avoid the secondary droplets of tail flue gas dirt/mist to separating, improve separation efficiency；4th step, the tail flue gas of entrance separation pipe 15, after the separation process of certain length, flows out from the outlet 14 separating pipe 15, it is achieved dirt/mist separates with tail flue gas.
Embodiment two
As shown in Figure 5, the present embodiment extends along the circumferencial direction separating pipe 15 for dedusting demister distribution slit 13 unlike embodiment one of coal-burning power plant's tail flue gas, distribution slit 13 is five groups, often group includes three distribution slits 13, often group distribution slit 13 is uniformly distributed on same circumference, and the group number of distribution slit 13 and the number of distribution slit 13 that often group includes can be adjusted according to actual needs.
Embodiment three
As shown in Figure 6, the present embodiment is spiral type for dedusting demister distribution slit 13 unlike embodiment one of coal-burning power plant's tail flue gas, and in Fig. 6, distribution slit 13 is one, and distribution slit 13 can also be a plurality of, is uniformly distributed on separation pipe 15.
The structure of distribution slit 13 is not limited to the structure described in above three embodiment; distribution slit 13 can also be circular port or slotted eye; as long as can be by being thrown toward the structure of the distribution slit 13 that the dirt/mist separating pipe 15 inwall is discharged, all within protection domain of the present utility model.
nullAs shown in Figure 7，This utility model dedusting demister system includes the dedusting demister 17 for coal-burning power plant's tail flue gas、SCR denitration device 21、Air preheater 22、Electric dust collector 23、Desulfurizing tower 24 and chimney 25，Boiler 20、SCR denitration device 21、Air preheater 22、Electric dust collector 23、Desulfurizing tower 24 and chimney 25 are sequentially connected with，Dedusting demister 17 for coal-burning power plant's tail flue gas is several，It is arranged in desulfurizing tower 24 top，Or/and in horizontal flue 26 between desulfurizing tower 24 and chimney 25，Or/and in vertical flue 27 between desulfurizing tower 24 and chimney 25，Or/and in chimney 25，The i.e. dedusting demister 17 for coal-burning power plant's tail flue gas can be arranged in desulfurizing tower 24 top、Horizontal flue 26 between desulfurizing tower 24 and chimney 25、Vertical flue 27 between desulfurizing tower 24 and chimney 25、Any one or more positions in these four positions of chimney 25.About arrangement, dedusting demister 17 for coal-burning power plant's tail flue gas can parallel connection be some groups, arrange the most in parallel or series between these some groups, as shown in Figure 8, three dedusting demister 17 parallel connections for coal-burning power plant's tail flue gas are one group, are often arranged in parallel between group, as shown in Figure 9 again, three dedusting demister 17 parallel connections for coal-burning power plant's tail flue gas are one group, often arranged in series again between group；Wherein the number for the dedusting demister 17 of coal-burning power plant's tail flue gas can determine according to field condition (such as exhaust gas volumn, pressure drop permissible value, dirt/mistiness degree etc.) with group number.
Claims (10)
1. the dedusting demister for coal-burning power plant's tail flue gas, it is characterised in that include separating pipe,
The top of this separation pipe is provided with several distribution slits, and the bottom of described separation pipe is provided with rotation stream generation apparatus
Put, and this eddy flow generator is positioned at described separation and manages.
Dedusting demister for coal-burning power plant's tail flue gas the most according to claim 1, its feature exists
Extend along the direction parallel with the described axis separating pipe in, described distribution slit.
Dedusting demister for coal-burning power plant's tail flue gas the most according to claim 2, its feature exists
In, the depth direction of described distribution slit is 10-90 degree with the angle of the tangential direction of described distribution slit.
Dedusting demister for coal-burning power plant's tail flue gas the most according to claim 1, its feature exists
In, described distribution slit extends along the circumferencial direction of described separation pipe.
Dedusting demister for coal-burning power plant's tail flue gas the most according to claim 1, its feature exists
In, described distribution slit is spiral type.
Dedusting demister for coal-burning power plant's tail flue gas the most according to claim 1, its feature exists
In, described distribution slit is circular port or slotted eye.
7. fill except mist according to the dedusting for coal-burning power plant's tail flue gas according to any one of claim 1-6
Put, it is characterised in that the area of several distribution slits described accounts for what described separation pipe upper face amassed
10%-90%.
8. fill except mist according to the dedusting for coal-burning power plant's tail flue gas according to any one of claim 1-6
Put, it is characterised in that described eddy flow generator is impeller.
9. the dedusting for coal-burning power plant's tail flue gas included according to any one of claim 1-8 is except mist
The dedusting demister system of device, this dedusting demister system include SCR denitration device, air preheater,
Electric dust collector, desulfurizing tower and chimney, it is characterised in that described for coal-burning power plant's tail flue gas
Dedusting demister is several, is arranged in described desulfurizing tower top, or/and described desulfurizing tower and institute
State in the horizontal flue between chimney, or/and the vertical flue between described desulfurizing tower and described chimney
In, or/and in described chimney.
Dedusting demister system the most according to claim 9, it is characterised in that described for coal-burning power plant's tail
The dedusting demister parallel connection of portion's flue gas is some groups, and these some groups for coal-burning power plant's tail flue gas
Arrange in parallel or series between dedusting demister.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620231320.2U CN205627457U (en) | 2016-03-24 | 2016-03-24 | A dust removal defogging device and system for coal fired power plant tail flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620231320.2U CN205627457U (en) | 2016-03-24 | 2016-03-24 | A dust removal defogging device and system for coal fired power plant tail flue gas |
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| Publication Number | Publication Date |
|---|---|
| CN205627457U true CN205627457U (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620231320.2U Active CN205627457U (en) | 2016-03-24 | 2016-03-24 | A dust removal defogging device and system for coal fired power plant tail flue gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905380A (en) * | 2018-08-10 | 2018-11-30 | 中国华电集团科学技术研究总院有限公司 | A kind of coal-burning power plant's SCR pre-dedusting device with diversion section |
-
2016
- 2016-03-24 CN CN201620231320.2U patent/CN205627457U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905380A (en) * | 2018-08-10 | 2018-11-30 | 中国华电集团科学技术研究总院有限公司 | A kind of coal-burning power plant's SCR pre-dedusting device with diversion section |
| CN108905380B (en) * | 2018-08-10 | 2024-03-19 | 中国华电集团科学技术研究总院有限公司 | SCR pre-dedusting device with diversion section for coal-fired power plant |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |