CN206001449U - A kind of device preventing CFB boiler air channel spout abrasion - Google Patents
A kind of device preventing CFB boiler air channel spout abrasion Download PDFInfo
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- CN206001449U CN206001449U CN201620935616.2U CN201620935616U CN206001449U CN 206001449 U CN206001449 U CN 206001449U CN 201620935616 U CN201620935616 U CN 201620935616U CN 206001449 U CN206001449 U CN 206001449U
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- steel plate
- air channel
- cfb boiler
- abrasionproof
- abrasion
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Abstract
A kind of device preventing CFB boiler air channel spout abrasion, including the secondary air channel being embedded in advance in CFB boiler underpants lower limb furnace wall, secondary air channel and overfire air jet connect, secondary air channel is strengthened steel plate by upper supporting steel plate, lower supporting steel plate and abrasionproof and is connected, and abrasionproof is strengthened steel plate and is embedded in advance inside CFB boiler underpants lower limb furnace wall；Abrasionproof is strengthened being welded with high temperature resistant pin on the inner face of steel plate; high temperature resistant pin is laid with abrasion-proof and refractory pouring material; this utility model passes through the secondary air channel being embedded in CFB boiler underpants lower limb furnace wall in advance and abrasionproof strengthens steel plate and abrasion-proof and refractory pouring material; overfire air jet is avoided directly to be exposed in burner hearth emulsion zone; overfire air jet is protected not wear and tear; thus ensureing the higher wind speed of overfire air port; secondary vent wind speed is conducive to after improving improving the penetration power of secondary wind; ensure fully to burn, improve boiler efficiency.
Description
Technical field
This utility model is related to recirculating fluidized bed (CFB) boiler technology field and in particular to one kind prevents CFB boiler air channel
The device of spout abrasion.
Background technology
The Large CFB Boiler of H type arrangement is arranged in boiler both sides due to separator, and furnace width is larger, in order to improve pot
The secondary wind penetration problem of stove, generally adopts " underpants lower limb " type double bed arrangement, and some overfiren air port is arranged in burner hearth
At the underpants lower limb in bottom centre position, can more preferably penetrate material in stove in order to secondary wind in combustion process, strengthen bed in stove
The disturbance of material, is conducive to being sufficiently mixed of furnace air and material, raising efficiency of combustion.But at CFB boiler underpants lower limb
There are a large amount of Flow of Goods and Materials, material axially and radially exchanges strongly and bottom operating air velocity is higher, so " underpants lower limb " place's air-out
Mouth wear problem is more serious, the development of puzzlement " underpants lower limb " type CFB boiler technology.
Content of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this utility model is to provide one kind to prevent CFB boiler wind
The device of road spout abrasion, prevents the abrasion deformation in air port it is ensured that boiler long period safe and stable operation.
In order to achieve the above object, the technical scheme that this utility model is taken is：
A kind of device preventing CFB boiler air channel spout abrasion, including two being embedded in advance in CFB boiler underpants lower limb furnace wall 8
Secondary airduct 1, secondary air channel 1 and overfire air jet 5 connect, and secondary air channel 1 is by upper supporting steel plate 4, lower supporting steel plate 6 and abrasionproof
Strengthen steel plate 7 to connect, abrasionproof is strengthened steel plate 7 and is embedded in advance inside CFB boiler underpants lower limb furnace wall 8.
Described abrasionproof is strengthened being welded with high temperature resistant pin 2 on the inner face of steel plate 7, is laid with resistance on high temperature resistant pin 2
Mill castable refractory 3.
The beneficial effects of the utility model are：By the secondary air channel 1 that is embedded in advance in CFB boiler underpants lower limb furnace wall 8 and anti-
Mill strengthens steel plate 7 and abrasion-proof and refractory pouring material 3, it is to avoid overfire air jet 5 is directly exposed in burner hearth emulsion zone, protects secondary wind
Nozzle 5 does not wear and tear, thus ensureing the higher wind speed of overfire air port, secondary vent wind speed is conducive to after improving improving secondary wind
Penetration power, strengthens empir-ical formulation disturbance in burner hearth for the material it is ensured that abundant burn, improves boiler efficiency.
Brief description
Fig. 1 is this utility model overfire air port profile.
Fig. 2 is this utility model overfire air port front view.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in detail.
See figures.1.and.2, a kind of device preventing CFB boiler air channel spout abrasion, including being embedded in CFB boiler underpants in advance
Secondary air channel 1 in lower limb furnace wall 8, secondary air channel 1 and overfire air jet 5 connect, secondary air channel 1 by upper supporting steel plate 4, lower
Support steel plate 6 and abrasionproof are strengthened steel plate 7 and are connected, and abrasionproof is strengthened steel plate 7 and is embedded in inside CFB boiler underpants lower limb furnace wall 8 in advance, and abrasionproof is strengthened
High temperature resistant pin 2 is welded with the inner face of steel plate 7, high temperature resistant pin 2 is laid with abrasion-proof and refractory pouring material 3.
Operation principle of the present utility model is：
In boiler running process, secondary wind is sprayed by overfire air jet 5, flow through secondary air channel 1 spray into combustion-supporting in burner hearth,
Emulsion zone substantial amounts of solid particle sticking wall flow washes away, cuts etc. that active force directly contacts is abrasion-proof and refractory pouring material 3, passes through
The secondary air channel 1 being embedded in advance in CFB boiler underpants lower limb furnace wall 8 and abrasionproof strengthen steel plate 7 and its attached abrasion-proof and refractory pouring material
3, it is to avoid overfire air jet 5 is directly exposed in burner hearth emulsion zone, reach the purpose of protection overfire air jet 5, thus ensureing two
The higher wind speed of secondary wind snout, secondary vent wind speed is conducive to after improving improving the penetration power of secondary wind, strengthens material in burner hearth
Interior empir-ical formulation disturbance, it is ensured that abundant burn, thus reducing lime-ash heat loss due to incomplete combustion, improves boiler efficiency, energy-conservation
Consumption reduction.
Claims (2)
1. a kind of device preventing CFB boiler air channel spout abrasion, including two being embedded in advance in CFB boiler underpants lower limb furnace wall (8)
Secondary airduct (1), secondary air channel (1) and overfire air jet (5) connect it is characterised in that：Secondary air channel (1) is by upper supporting steel plate
(4), lower supporting steel plate (6) and abrasionproof are strengthened steel plate (7) and are connected, and abrasionproof is strengthened steel plate (7) and is embedded in CFB boiler underpants lower limb furnace wall in advance
(8) inside.
2. a kind of device preventing CFB boiler air channel spout abrasion according to claim 1 it is characterised in that：Described
Abrasionproof is strengthened being welded with high temperature resistant pin (2) on the inner face of steel plate (7), is laid with abrasion-proof and refractory and pours on high temperature resistant pin (2)
Material feeding (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620935616.2U CN206001449U (en) | 2016-08-24 | 2016-08-24 | A kind of device preventing CFB boiler air channel spout abrasion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620935616.2U CN206001449U (en) | 2016-08-24 | 2016-08-24 | A kind of device preventing CFB boiler air channel spout abrasion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206001449U true CN206001449U (en) | 2017-03-08 |
Family
ID=58198212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620935616.2U Active CN206001449U (en) | 2016-08-24 | 2016-08-24 | A kind of device preventing CFB boiler air channel spout abrasion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206001449U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196030A (en) * | 2016-08-24 | 2016-12-07 | 中国华能集团清洁能源技术研究院有限公司 | A kind of structure preventing CFB boiler air channel spout abrasion |
-
2016
- 2016-08-24 CN CN201620935616.2U patent/CN206001449U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106196030A (en) * | 2016-08-24 | 2016-12-07 | 中国华能集团清洁能源技术研究院有限公司 | A kind of structure preventing CFB boiler air channel spout abrasion |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |