CN209362045U - A kind of flue gas denitrification system bulky grain ash blocking apparatus - Google Patents
A kind of flue gas denitrification system bulky grain ash blocking apparatus Download PDFInfo
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- CN209362045U CN209362045U CN201822235885.XU CN201822235885U CN209362045U CN 209362045 U CN209362045 U CN 209362045U CN 201822235885 U CN201822235885 U CN 201822235885U CN 209362045 U CN209362045 U CN 209362045U
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- flue gas
- bulky grain
- shell
- blocking apparatus
- vortex board
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Abstract
The utility model relates to a kind of flue gas denitrification system bulky grain ash blocking apparatus, including shell, vortex board and interception pipe, the shell rectangular frame-shaped, vortex board is horizontally set at the front side of enclosure interior and connect at left and right sides of both ends and shell, there are angles between for the front and back setting direction of the vortex board and flow of flue gas direction, the interception pipe is vertically arranged to the rear side of enclosure interior and both ends are connect with shell upper and lower ends, transversely distribution forms interception tube bank to multiple interception pipes, the flue gas successively passes through vortex board and intercepts tube bank, the device is when flue gas passes through, small-sized whirlpool is formed at vortex board back, particle slows down under vortex action, it is flutterred and is caught in interception tube bundle region, due to the cyclonic action of small whirlpool, automatic guidance particle ash moves downward, play the effect for intercepting bulky grain ash.
Description
Technical field
The utility model relates to a kind of flue gas denitrification system bulky grain ash blocking apparatus, belong to Air Pollution Control neck
Domain.
Background technique
Coal fired power plant denitrating flue gas generallys use SCR gas denitrifying technology, and it is anti-to increase SCR after economizer, before air preheater
Device is answered, ammonia is sprayed into as reducing agent, restores the nitrogen oxides in flue gas, generate nitrogen and water.This arrangement is using high
Flying dust arrangement, SCR catalyst operate in the environment of high flying dust.Since in-furnace slag phenomenon will cause the flying dust collection of fine particle
It is poly-, bulky grain ash is formed, these bulky grain ashes are porous structure, and density is smaller, and shape is irregular, and size can generally reach 10mm
More than, the kinetic energy of bulky grain ash is directly proportional to its diameter, the risk of denitrating catalyst abrasion and obstruction can be dramatically increased, for depositing
In the unit of bulky grain ash, needs to add bulky grain ash blocking apparatus before SCR reactor, reduce the obstruction of SCR catalyst
Phenomenon.
Original bulky grain ash blocking apparatus generally uses well plate format, and the pressure loss is larger, when intercepting bulky grain ash
It is easy to happen the phenomenon that bulky grain ash insertion hole can not be removed.
Utility model content
In order to solve the problems in the existing technology the utility model, it is big to provide a kind of coal fired power plant flue gas denitrification system
Particle ash blocking apparatus intercepts bulky grain ash using comb mode, while can remove of obstruction by way of steam blowing
Grain, guarantees under the conditions of lower pressure loss, effectively removes the bulky grain ash in flue gas.
In order to achieve the above object, the utility model proposes technical solution are as follows: a kind of flue gas denitrification system bulky grain ash
Blocking apparatus, including shell, vortex board and interception pipe, the shell rectangular frame-shaped, vortex board are horizontally set at enclosure interior
Front side and both ends and shell at left and right sides of connect, the front and back setting direction of the vortex board and flow of flue gas direction extremely between exist
Angle, the interception pipe is vertically arranged to the rear side of enclosure interior and both ends are connect with shell upper and lower ends, multiple interception pipe edges
Cross direction profiles, which are formed, intercepts tube bank, and the flue gas successively passes through vortex board and intercepts tube bank.
Be further designed to above-mentioned technical proposal: transversely corrugated distribution is restrained in the interception.
The vortex board is equipped with several, several vortex boards are vertically distributed in shell.
There are gaps between adjacent interception pipe.
The housing bottom is equipped with ash bucket.
The case top be equipped with soot blower, the soot blower be located at intercept tube bank top, the soot blowing direction of soot blower with
It is parallel to intercept pipe setting direction.
The utility model has the following beneficial effects:
The technical program the front of blocking apparatus setting lateral arrangement vortex board, it is vertical in vortex board associated downstream
The interception of arrangement is restrained, and when flue gas passes through, forms small-sized whirlpool at vortex board back, and particle slows down under vortex action,
Interception tube bundle region, which is flutterred, catches, automatic that particle ash is guided to move downward due to the cyclonic action of small whirlpool, is received into ash bucket
Collection is arranged steam spraying gun on tube bank Engagement Area top, periodically prolongs the longitudinal purging of tube bank, avoid blocking, can reduce resistance, reduce fortune
The row pressure loss.
The blocking apparatus structure of the technical program is simple, is conducive to processing and installation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment.
Fig. 2 is the left view of vortex board in Fig. 1.
Fig. 3 is the top view that tube bank is intercepted in Fig. 1.
In figure: 1- shell, 2- vortex board, 3- intercept tube bank.
Specific embodiment
With reference to the accompanying drawing and the utility model is described in detail in specific embodiment.
Embodiment one
As shown in Figure 1, a kind of flue gas denitrification system bulky grain ash blocking apparatus of the present embodiment, be set to economizer with
In flue between SCR reactor.
The blocking apparatus includes shell 1, vortex board 2 and intercepts pipe, 1 rectangular frame-shaped of shell, and vortex board 2 is laterally set
It is placed at left and right sides of front side and both ends inside shell 1 and shell 1 and connects, the front and back setting direction and flue gas of the vortex board 2
There are angles between for flow direction, and oliquely downward tilt from front to back, as shown in Fig. 2, several edges in shell of vortex board 2
Up and down direction is uniformly distributed.
Interception pipe is vertically arranged to the rear side inside shell 1 in the present embodiment and both ends are connect with 1 upper and lower ends of shell, more
Transversely distribution forms interception tube bank 3 to a interception pipe, as shown in figure 3, intercepting tube bank transversely corrugated distribution, adjacent two are blocked
It cuts between pipe there are gap, and gap is less than 10mm.
The blocking apparatus of the present embodiment encounters vortex board in blocking apparatus leading portion in use, flue gas stream carries bulky grain ash
2, standing vortex is formed after vortex board 2, particle is intercepted in 3 positions of interception tube bank, meanwhile, air-flow is under the action of vortex, gas
Stream forms slight downwash flow on tube bank surface, and the bulky grain ash particle of interception is moved down in gravity and air-flow guidance.It falls into
It is arranged in 1 bottom ash bucket of shell, while also steam sootblower, soot blower soot blowing can be arranged intercepting in the present apparatus above tube bank 3
Direction is straight down, to prolong tube bank longitudinal direction and purge to tube bank, reduce the pressure loss of system operation.
Embodiment two
The flue gas denitrification system bulky grain ash blocking apparatus of the present embodiment, structure are basically the same as the first embodiment, difference
It is in the present embodiment using the outer wall of flue as shell, vortex board and interception tube bank is directly mounted in flue.
The technical solution of the utility model is not limited to the various embodiments described above, all technologies obtained using equivalent replacement mode
Scheme is all fallen in the range of the requires of the utility model protection.
Claims (6)
1. a kind of flue gas denitrification system bulky grain ash blocking apparatus, it is characterised in that: including shell, vortex board and intercept pipe, institute
Shell rectangular frame-shaped is stated, vortex board is horizontally set at the front side of enclosure interior and connect at left and right sides of both ends and shell, described
Between there are angle, the interception pipe is vertically arranged to enclosure interior for the front and back setting direction of vortex board and flow of flue gas direction
Rear side and both ends are connect with shell upper and lower ends, transversely distribution forms and intercepts tube bank multiple interceptions pipes, and the flue gas successively passes through
It crosses vortex board and intercepts tube bank.
2. flue gas denitrification system bulky grain ash blocking apparatus according to claim 1, it is characterised in that: edge is restrained in the interception
Laterally corrugated distribution.
3. flue gas denitrification system bulky grain ash blocking apparatus according to claim 1, it is characterised in that: the vortex board is equipped with
Several, several vortex boards are vertically distributed in shell.
4. flue gas denitrification system bulky grain ash blocking apparatus according to claim 1, it is characterised in that: between adjacent interception pipe
There are gaps.
5. flue gas denitrification system bulky grain ash blocking apparatus according to claim 1, it is characterised in that: the housing bottom is set
There is ash bucket.
6. flue gas denitrification system bulky grain ash blocking apparatus according to claim 1, it is characterised in that: the case top is set
There is soot blower, the soot blower, which is located at, intercepts tube bank top, and the soot blowing direction of soot blower is parallel with pipe setting direction is intercepted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822235885.XU CN209362045U (en) | 2018-12-28 | 2018-12-28 | A kind of flue gas denitrification system bulky grain ash blocking apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822235885.XU CN209362045U (en) | 2018-12-28 | 2018-12-28 | A kind of flue gas denitrification system bulky grain ash blocking apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209362045U true CN209362045U (en) | 2019-09-10 |
Family
ID=67827937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822235885.XU Active CN209362045U (en) | 2018-12-28 | 2018-12-28 | A kind of flue gas denitrification system bulky grain ash blocking apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209362045U (en) |
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2018
- 2018-12-28 CN CN201822235885.XU patent/CN209362045U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 210046 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Patentee after: National Energy Group Science and Technology Research Institute Co.,Ltd. Address before: 210046 fairyland Road, Qixia District, Nanjing, Jiangsu Province, No. 10 Patentee before: GUODIAN SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |