CN106196030A - A kind of structure preventing CFB boiler air channel spout abrasion - Google Patents
A kind of structure preventing CFB boiler air channel spout abrasion Download PDFInfo
- Publication number
- CN106196030A CN106196030A CN201610718181.0A CN201610718181A CN106196030A CN 106196030 A CN106196030 A CN 106196030A CN 201610718181 A CN201610718181 A CN 201610718181A CN 106196030 A CN106196030 A CN 106196030A
- Authority
- CN
- China
- Prior art keywords
- steel plate
- air channel
- cfb boiler
- abrasionproof
- abrasion
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2206/00—Fluidised bed combustion
- F23C2206/10—Circulating fluidised bed
Abstract
A kind of structure preventing CFB boiler air channel spout abrasion, including the pre-secondary air channel being embedded 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; the present invention strengthens steel plate and abrasion-proof and refractory pouring material by being embedded in the secondary air channel in CFB boiler underpants lower limb furnace wall and abrasionproof in advance; overfire air jet is avoided directly to be exposed in burner hearth emulsion zone; protection overfire air jet does not weares and teares; thus ensure the wind speed that overfire air port is higher; secondary vent wind speed is conducive to improving the penetration power of secondary wind after improving; ensure fully burning, improve boiler efficiency.
Description
Technical field
The present invention relates to recirculating fluidized bed (CFB) boiler technology field, be specifically related to one and prevent CFB boiler air channel spout
The structure of abrasion.
Background technology
The Large CFB Boiler that H type is arranged is arranged in boiler both sides due to separator, and furnace width is relatively big, in order to improve pot
The secondary wind penetration problem of stove, generally uses " underpants lower limb " type double bed arrangement, and some overfiren air port is arranged in burner hearth
At the underpants lower limb in centre position, bottom, in order in combustion process, secondary wind can more preferably penetrate material in stove, strengthen bed in stove
The disturbance of material, beneficially furnace air are sufficiently mixed with material, improve efficiency of combustion.But at CFB boiler underpants lower limb
There is a large amount of Flow of Goods and Materials, material axially and radially exchanges strong 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.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, it is an object of the invention to provide one and prevent CFB boiler air channel from spraying
The structure of mouth 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 the present invention takes is:
A kind of structure preventing CFB boiler air channel spout abrasion, including pre-be embedded in CFB boiler underpants lower limb furnace wall 8 two
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
Strengthening 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 invention have the benefit that and add by being embedded in the secondary air channel 1 in CFB boiler underpants lower limb furnace wall 8 and abrasionproof in advance
Strong 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, protect overfire air jet
5 do not wear and tear, thus ensure the wind speed that overfire air port is higher, and secondary vent wind speed is conducive to improving penetrating of secondary wind after improving
Power, strengthens material empir-ical formulation disturbance in burner hearth, it is ensured that fully burn, improve boiler efficiency.
Accompanying drawing explanation
Fig. 1 is overfire air port profile of the present invention.
Fig. 2 is overfire air port front view of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is described in detail.
See figures.1.and.2, a kind of structure preventing CFB boiler air channel spout abrasion, it is embedded in CFB boiler underpants including pre-
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
It is welded with high temperature resistant pin 2 on the inner face of steel plate 7, high temperature resistant pin 2 is laid with abrasion-proof and refractory pouring material 3.
The operation principle of the present invention is:
In boiler running process, secondary wind is sprayed by overfire air jet 5, flows through in secondary air channel 1 sprays into burner hearth combustion-supporting,
What the active forces such as emulsion zone substantial amounts of solid particle sticking wall flow washes away, cutting directly contacted is abrasion-proof and refractory pouring material 3, passes through
It is embedded in the secondary air channel 1 in CFB boiler underpants lower limb furnace wall 8 in advance and abrasionproof strengthens steel plate 7 and attached abrasion-proof and refractory pouring material thereof
3, it is to avoid overfire air jet 5 is directly exposed in burner hearth emulsion zone, reach to protect the purpose of overfire air jet 5, thus ensure two
The wind speed that secondary wind snout is higher, secondary vent wind speed is conducive to improving the penetration power of secondary wind, strengthens material at burner hearth after improving
Interior empir-ical formulation disturbance, it is ensured that fully burn, thus reduce lime-ash heat loss due to incomplete combustion, improves boiler efficiency, energy-conservation
Consumption reduction.
Claims (2)
1. prevent a structure for CFB boiler air channel spout abrasion, including pre-be embedded in CFB boiler underpants lower limb furnace wall (8) two
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 strengthen steel plate (7) and connect, abrasionproof is strengthened steel plate (7) and is embedded in CFB boiler underpants lower limb furnace wall in advance
(8) the inside.
A kind of structure preventing CFB boiler air channel spout abrasion the most 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 waters on high temperature resistant pin (2)
Material feeding (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718181.0A CN106196030A (en) | 2016-08-24 | 2016-08-24 | A kind of structure preventing CFB boiler air channel spout abrasion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718181.0A CN106196030A (en) | 2016-08-24 | 2016-08-24 | A kind of structure preventing CFB boiler air channel spout abrasion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106196030A true CN106196030A (en) | 2016-12-07 |
Family
ID=57523748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610718181.0A Pending CN106196030A (en) | 2016-08-24 | 2016-08-24 | A kind of structure preventing CFB boiler air channel spout abrasion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106196030A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2681668B1 (en) * | 1991-09-24 | 1997-11-21 | Stein Industrie | BOILER FIREPLACE WITH FLUIDIZED BED CIRCULATING WITH INTERNAL SEPARATION WALL. |
| CN201137932Y (en) * | 2007-09-11 | 2008-10-22 | 李朝侠 | Circulating fluid bed boiler coal drop pipe wear prevention structure |
| CN202403267U (en) * | 2011-11-30 | 2012-08-29 | 中国神华能源股份有限公司 | Circulating fluidized bed boiler |
| CN102980178A (en) * | 2011-09-05 | 2013-03-20 | 华北电力科学研究院有限责任公司 | Circulating fluidized bed boiler water wall air film wear-preventive device, circulating fluidized bed boiler water wall air film wear-preventive method and boiler |
| CN206001449U (en) * | 2016-08-24 | 2017-03-08 | 中国华能集团清洁能源技术研究院有限公司 | A kind of device preventing CFB boiler air channel spout abrasion |
-
2016
- 2016-08-24 CN CN201610718181.0A patent/CN106196030A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2681668B1 (en) * | 1991-09-24 | 1997-11-21 | Stein Industrie | BOILER FIREPLACE WITH FLUIDIZED BED CIRCULATING WITH INTERNAL SEPARATION WALL. |
| CN201137932Y (en) * | 2007-09-11 | 2008-10-22 | 李朝侠 | Circulating fluid bed boiler coal drop pipe wear prevention structure |
| CN102980178A (en) * | 2011-09-05 | 2013-03-20 | 华北电力科学研究院有限责任公司 | Circulating fluidized bed boiler water wall air film wear-preventive device, circulating fluidized bed boiler water wall air film wear-preventive method and boiler |
| CN202403267U (en) * | 2011-11-30 | 2012-08-29 | 中国神华能源股份有限公司 | Circulating fluidized bed boiler |
| CN206001449U (en) * | 2016-08-24 | 2017-03-08 | 中国华能集团清洁能源技术研究院有限公司 | A kind of device preventing CFB boiler air channel spout abrasion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161207 |
|
| WD01 | Invention patent application deemed withdrawn after publication |