CN205782881U - Interior circulation choked flow buffer-type biomass circulating fluidized bed - Google Patents
Interior circulation choked flow buffer-type biomass circulating fluidized bed Download PDFInfo
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- CN205782881U CN205782881U CN201620748803.XU CN201620748803U CN205782881U CN 205782881 U CN205782881 U CN 205782881U CN 201620748803 U CN201620748803 U CN 201620748803U CN 205782881 U CN205782881 U CN 205782881U
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- choked flow
- flow buffer
- type
- ring
- buffer stopper
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Abstract
The utility model discloses circulation choked flow buffer-type biomass circulating fluidized bed in one, including boiler body, circumferentially arranged with a loop choked flow buffer stopper on the inwall of described boiler body, described ring-type choked flow buffer stopper is provided with multiple, and multiple ring-type choked flow buffer stoppers are the most spaced apart along the inwall of boiler body.Being welded with pin on the inwall of described boiler body, ring-type choked flow buffer stopper is fixed by a pin on the inwall of boiler body.Owing to being additionally arranged multiple tracks ring-type choked flow buffer stopper in boiler body, solve that unit load is low, evaporation and heat-exchange efficiency is low, boiler efficiency low material consumption is big, move the problems such as serious, unburned carbon in flue dust vertical shaft high, rear coking dust stratification is serious after burning difficulty, has the advantages that burning is abundant, energy-conservation, efficiency is high.
Description
Technical field
This utility model relates to a kind of boiler, is specifically related to a kind of biomass circulating fluidized bed.
Background technology
The existence burning of existing material recirculating fluidized bed is insufficient, the defect that rear vertical shaft coking dust stratification is serious.
Being particularly in monsoon climate region, subtropical zone, this area of rainfall is abundant, and fuel moisture wide in variety in region is high, long
Phase uses the biomass fuel of ＞ 45% moisture, in #2 unit boiler emerged in operation: unit on-load difficulty load is low, evaporation
Heat exchange efficiency is low, and boiler efficiency low material consumption is big；Moving serious after burning difficulty, unburned carbon in flue dust is high, and rear vertical shaft coking dust stratification is serious.
Utility model content
In order to overcome above-mentioned deficiency, the purpose of this utility model is to provide one to have abundant, energy-conservation, the efficiency of burning
The interior circulation choked flow buffer-type biomass circulating fluidized bed of high characteristic.
For solving above-mentioned technical problem, this utility model be the technical scheme is that
Interior circulation choked flow buffer-type biomass circulating fluidized bed, including boiler body, edge on the inwall of described boiler body
Being circumferentially with a loop choked flow buffer stopper, described ring-type choked flow buffer stopper is provided with multiple, multiple ring-type choked flow buffer stoppers along
The inwall of boiler body is the most spaced apart.
Further, the inside bottom surface limit of described ring-type choked flow buffer stopper is inclined upwardly, and makes bottom surface form an inclined-plane；Institute
State and be intervally distributed with a plurality of dilatation joint along circumferential direction on ring-type choked flow buffer stopper, described dilatation joint is filled with ceramic fibre and protects
Adiabator.
Further, described bottom surface is 50 ° relative to the angle of inclination of boiler body, along week on described ring-type choked flow buffer stopper
Length direction arranges the most described dilatation joint every 1～3 meter, is filled with the porcelain fiber heat preservation material of δ=4mm in described dilatation joint；
Described ring-type choked flow buffer stopper is to be laid cast by pink fused alumina refractory material to form.
Further, the inwall of described boiler body being welded with pin, ring-type choked flow buffer stopper is fixed by a pin to
On the inwall of boiler body.
Further, described ring-type choked flow buffer stopper is fixed on the inwall of boiler body by the pin described in two rows
On, each pin in upper row is horizontally disposed, and each pin in lower row is inclined upwardly.
Further, described pin is V-shaped, and the corner of pin welds with the inwall of boiler body, one end of pin
It is welded with rustless steel reinforcement.
Further, the inwall of described boiler body is to be enclosed by multiple water screen tubes spaced apart to form, and borders on the river mutually
Being closed by fin between cold wall pipe and connect, described pin is welded on fin.
Further, described ring-type choked flow buffer stopper is provided with 6 roads, and the 6 ring-type choked flow in road buffer stoppers are along in boiler body
Wall is the most spaced apart, and the spacing between adjacent annular choked flow buffer stopper is 3 meters；The cross section of per pass ring-type choked flow buffer stopper
A size of: a height of 200mm of inwall, upper a width of 100mm, a height of 100mm of outer wall, the inclined height of bottom surface are 100mm, ring-type choked flow
The overall length of buffer stopper 40 meters.
Further, described water screen tube totally 396, wherein, each 144 of stokehold, furnace rear, stove is left, right each 54 of stove, often
A diameter of 51 mm of root water screen tube, material is the steel of 20G.
Further, the Colophonium that the external coating 1～2mm of described pin is thick.
The beneficial effects of the utility model are:
Owing to being additionally arranged multiple tracks ring-type choked flow buffer stopper in boiler body, solve that unit load is low, evaporation and heat-exchange effect
Rate is low, boiler efficiency low material consumption is big, move the problems such as serious, unburned carbon in flue dust vertical shaft high, rear coking dust stratification is serious after burning difficulty,
Have the advantages that burning is abundant, energy-conservation, efficiency is high.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in accompanying drawing is not constituted of the present utility model
Any restriction, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to following attached
Figure obtains other accompanying drawing:
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the plan structure schematic diagram of the boiler body inwall shown in Fig. 1；
Fig. 3 is the cross section structure schematic diagram of the ring-type choked flow buffer stopper shown in Fig. 1；
Fig. 4 is the structural representation of pin shown in Fig. 2.
In figure: 1, boiler body；2, ring-type choked flow buffer stopper；3, water screen tube；4, fin；5, pin；6, in upper row
Each pin；7, each pin in lower row；8, bottom surface；9, rustless steel reinforcement.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical solution of the utility model, below in conjunction with the accompanying drawings and tool
This utility model is described in further detail by body embodiment, it should be noted that in the case of not conflicting, the application's
Feature in embodiment and embodiment can be mutually combined.
As it is shown in figure 1, interior circulation choked flow buffer-type biomass circulating fluidized bed, including boiler body 1, described boiler body
Circumferentially arranged with a loop choked flow buffer stopper 2 on the inwall of 1, described ring-type choked flow buffer stopper 2 is provided with 6, described ring-type resistance
Along circumferential direction, the most described dilatation joint is set every 1～3 meter on stream buffer stopper, described dilatation joint is filled with δ=4mm's
Porcelain fiber heat preservation material；Described ring-type choked flow buffer stopper is to be laid by pink fused alumina refractory material to form.6 ring-type choked flow buffer stoppers
2 is the most spaced apart along the inwall of boiler body 1, and the spacing between adjacent annular choked flow buffer stopper 2 is 3 meters.
As in figure 2 it is shown, the inwall of described boiler body 1 is to be enclosed by multiple water screen tubes 3 spaced apart to form, adjacent
Being closed by fin 4 between water screen tube 3 and connect, described pin 5 is welded on fin 4, described water screen tube 3 totally 396, its
In, each 144 of stokehold, furnace rear, stove is left, right each 54 of stove, and a diameter of 51 mm of every water screen tube, material is the steel of 20G
Material, the steel of 20G material belong to carbon constructional quality steel, are boiler materials, and its phosphorus content is 0.16-0.24%, and tensile strength is
410Mpa, yield point 230-250Mpa.
As it is shown on figure 3, described ring-type choked flow buffer stopper is fixed on the interior of boiler body by the pin described in two rows
On wall, each pin 6 in upper row is horizontally disposed, and each pin 7 in lower row is inclined upwardly.Described ring-type choked flow buffer stopper
Bottom surface 8 inner side edge is inclined upwardly, and makes the bottom surface 8 of ring-type choked flow buffer stopper form an inclined-plane；The relative boiler body in described bottom surface 8
Angle of inclination be 50 °, the sectional dimension of per pass ring-type choked flow buffer stopper is: inside wall height H2 is 100mm, upper a width of 100mm,
The a height of 200mm of outer wall, inclined height H1 of bottom surface are 100mm, the overall length of ring-type choked flow buffer stopper 40 meters.Ring-type choked flow buffer stopper
By formwork and to lay cast with pink fused alumina refractory material and form, pink fused alumina refractory material before casting, to pin brushing 1
～the Colophonium that 2mm is thick.
As shown in Figure 4, described pin 5 is V-shaped, the corner of pin 5 and the inwall (specially fin) of boiler body 1
Welding, one end of pin 5 is welded with rustless steel reinforcement 9.Pin specification φ 6mm, material is 1Cr18Ni9Ti, the ring-type resistance of per pass
Stream buffer stopper needs pin 800.
Ring-type choked flow buffer stopper installation specification:
1) ring-type choked flow buffer stopper mounting means: pin is weldingly fixed on fin and applies with high temperature resistant pink fused alumina inner lining material
If parcel.
2) pin welds all employing A302 welding rods with fin, it is desirable to full weld.One end at every pin welds Φ 6
(1Cr18Ni9Ti) rustless steel reinforcement；
3) making of ring-type choked flow buffer stopper, needs formwork, and mould specification can be fixed according to scene, ring-type choked flow buffer stopper bottom surface
Smooth transition is required to fin；
4) the dilatation joint setting principle on ring-type choked flow buffer stopper: reserved ring-type choked flow buffer stopper expansion clearance；Between expansion
Gap is avoided excessive；The dilatation joint on ring-type choked flow buffer stopper that upper and lower layer is adjacent to stagger.
5) high temperature resistant pink fused alumina inner lining material requires: Long-term service temperature >=1100 DEG C, maximum operation (service) temperature reaches 1590 DEG C；2
Without cracking in year, come off；Without baker after construction, can direct-fire furnace lifting；It is fully cured in 12 hours.
Operation principle: the interior circulation that this patent slows down dilute-phase zone limit wall circular step by step by 6 grades of ring-type choked flow buffer stoppers is big
Granule particles group moves downward speed, increases the patch stream conduction heat transfer component of fin panel casing；Change dilute-phase zone limit wall ring step by step
The interior circulation bulky grain particle cluster of shape to central core motor region move, allow fall bulky grain particle cluster and the gas moved upward
Gu the collision of suspended particles group is accelerated to crush grinds burning: it is biological that emulsion zone is stablized and improved to dilute-phase zone lower floor ring-type choked flow buffer stopper
Matter fuel combustion speed, efficiency and enhancing emulsion zone heat transfer efficiency, unit load is low, evaporation and heat-exchange efficiency is low, pot to reach solution
The efficiency of furnace low material consumption is big, move the purpose of the problem such as serious, unburned carbon in flue dust vertical shaft high, rear coking dust stratification is serious after burning difficulty.
Above description elaborates a lot of detail so that fully understanding this utility model, but, this practicality is new
Type can be implemented to use other to be different from other modes described here, it is thus impossible to be interpreted as protecting this utility model
Protect the restriction of scope.
Claims (10)
1. circulate a choked flow buffer-type biomass circulating fluidized bed in, including boiler body, it is characterised in that: described boiler is originally
Circumferentially arranged with a loop choked flow buffer stopper on the inwall of body, described ring-type choked flow buffer stopper is provided with multiple, multiple ring-type resistances
Stream buffer stopper is the most spaced apart along the inwall of boiler body.
Interior circulation choked flow buffer-type biomass circulating fluidized bed the most according to claim 1, it is characterised in that: described ring-type
The inside bottom surface limit of choked flow buffer stopper is inclined upwardly, and makes bottom surface form an inclined-plane；Along girth on described ring-type choked flow buffer stopper
Direction is intervally distributed with a plurality of dilatation joint, is filled with ceramic wool insulation material in described dilatation joint.
Interior circulation choked flow buffer-type biomass circulating fluidized bed the most according to claim 2, it is characterised in that: described bottom surface
The angle of inclination of boiler body is 50 ° relatively, and described ring-type choked flow buffer stopper is arranged together along circumferential direction every 1～3 meter
Described dilatation joint, is filled with the porcelain fiber heat preservation material of δ=4mm in described dilatation joint；Described ring-type choked flow buffer stopper is by chromium
Corundum refractory lays cast and forms.
Interior circulation choked flow buffer-type biomass circulating fluidized bed the most according to claim 1, it is characterised in that: described boiler
Being welded with pin on the inwall of body, ring-type choked flow buffer stopper is fixed by a pin on the inwall of boiler body.
Interior circulation choked flow buffer-type biomass circulating fluidized bed the most according to claim 4, it is characterised in that: described ring-type
Choked flow buffer stopper is fixed on the inwall of boiler body by the pin described in two rows, the horizontal cloth of each pin in upper row
Putting, each pin in lower row is inclined upwardly.
Interior circulation choked flow buffer-type biomass circulating fluidized bed the most according to claim 4, it is characterised in that: described pin
For V-shaped, the corner of pin welds with the inwall of boiler body, and one end of pin is welded with rustless steel reinforcement.
Interior circulation choked flow buffer-type biomass circulating fluidized bed the most according to claim 4, it is characterised in that: described boiler
The inwall of body is to be enclosed by multiple water screen tubes spaced apart to form, and is closed even by fin between adjacent water screen tube
Connecing, described pin is welded on fin.
Interior circulation choked flow buffer-type biomass circulating fluidized bed the most according to claim 1, it is characterised in that: described ring-type
Choked flow buffer stopper is provided with 6 roads, and 6 road ring-type choked flow buffer stoppers are the most spaced apart along the inwall of boiler body, adjacent ring
Spacing between shape choked flow buffer stopper is 3 meters；The sectional dimension of per pass ring-type choked flow buffer stopper is: a height of 200mm of inwall, upper width
It is 100mm for 100mm, a height of 100mm of outer wall, the inclined height of bottom surface, the overall length of ring-type choked flow buffer stopper 40 meters.
Interior circulation choked flow buffer-type biomass circulating fluidized bed the most according to claim 7, it is characterised in that: described water-cooled
Wall pipe totally 396, wherein, each 144 of stokehold, furnace rear, stove is left, right each 54 of stove, a diameter of 51 mm of every water screen tube,
Material is the steel of 20G.
Interior circulation choked flow buffer-type biomass circulating fluidized bed the most according to claim 4, it is characterised in that: described pin
The Colophonium that the external coating 1～2mm of nail is thick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748803.XU CN205782881U (en) | 2016-07-16 | 2016-07-16 | Interior circulation choked flow buffer-type biomass circulating fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620748803.XU CN205782881U (en) | 2016-07-16 | 2016-07-16 | Interior circulation choked flow buffer-type biomass circulating fluidized bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205782881U true CN205782881U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620748803.XU Active CN205782881U (en) | 2016-07-16 | 2016-07-16 | Interior circulation choked flow buffer-type biomass circulating fluidized bed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051753A (en) * | 2016-07-16 | 2016-10-26 | 广东粤电湛江生物质发电有限公司 | Internally-circulating flowing choking and buffering type biomass circulating fluidized bed |
-
2016
- 2016-07-16 CN CN201620748803.XU patent/CN205782881U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051753A (en) * | 2016-07-16 | 2016-10-26 | 广东粤电湛江生物质发电有限公司 | Internally-circulating flowing choking and buffering type biomass circulating fluidized bed |
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| GR01 | Patent grant |