CN207279612U - A kind of water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct - Google Patents
A kind of water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct Download PDFInfo
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- CN207279612U CN207279612U CN201721138960.XU CN201721138960U CN207279612U CN 207279612 U CN207279612 U CN 207279612U CN 201721138960 U CN201721138960 U CN 201721138960U CN 207279612 U CN207279612 U CN 207279612U
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- fluidized bed
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- water
- combustion chamber
- bed combustion
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- 239000003250 coal slurry Substances 0.000 title claims abstract description 33
- 238000002485 combustion reaction Methods 0.000 claims abstract description 39
- 238000009413 insulation Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 description 12
- 239000002002 slurry Substances 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
It the utility model is related to a kind of Water-coal slurry burning device, specifically a kind of water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct.A kind of water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct of the utility model, including burner hearth and flue, there is fluidized bed combustion chamber in the lower disposed of burner hearth, scum pipe is provided with the middle part of fluidized bed combustion chamber, water-coal-slurry feed pipe is equipped with the front wall lower part of fluidized bed combustion chamber and mends bed material pipe, water-coal-slurry feed pipe is arranged in fluidized bed combustion room, bed material pipe is mended also to communicate with fluidized bed combustion chamber, secondary air channel is set around burner hearth, it is disposed with superheater from top to bottom in flue, economizer and air preheater, high-temperature heat insulation separator is additionally provided with behind burner hearth, high-temperature heat insulation separator is communicated with the upper outlet of burner hearth, the lower riser of high-temperature heat insulation separator is connected with returning charge valve, returning charge valve is communicated with fluidized bed combustion chamber, the central upper portion Exported Cone of high-temperature heat insulation separator is communicated with flue.
Description
Technical field
A kind of Water-coal slurry burning device is the utility model is related to, specifically a kind of water-coal-slurry based on fluidised form reconstruct is followed
Circulation fluidized bed boiler.
Background technology
With the raising of national requirements for environmental protection, the improvement requirement to dust pollution also increasingly improves, and this requires we transport
Defeated solid coal cannot enter city, it is necessary to do dustless processing outside city, i.e., coal is first milled, and mix water and relevant
The additive of burning is adjusted, coal is become a kind of slurry of solid-liquid mixing, then is transported with tank car to place to use, so that reduce
The Coal Dust Pollution in city.Coal is worn into powdery can also improve burning of coal efficiency at the same time, and the main fuel in China is coal, this
It is to be determined by the energy resource structure in China, but the raising of environmental requirement is also the fundamental realities of the country in China, and this allows for water-coal-slurry pot
The prospect of stove is more and more wider.
Country's coal water slurry boiler mainly has the coal water slurry boiler and circulating fluidized bed boiler of similar heavy oil fired boiler at present.Combustion
The coal water slurry boiler of heavy oil is essentially from the transformation of former old boiler, and low there are efficiency of combustion, ignition temperature is high, and then causes nitrogen
The discharge such as oxide is excessive, has belonged to obsolete product.For circulating fluidized bed boiler as a kind of new clean-burning technology, its is energy saving
The feature of environmental protection achieves good development in recent years, but is mainly used in the field that fuel is solid particle coal.With national policy
Change, the utilization of water-coal-slurry receives very high concern, and water-coal-slurry becomes new development opportunity as the boiler of fuel.Due to water coal
Slurry and solid coal facies ratio, propellant composition have changed a lot, and such as ash content is small, moisture is high, this allows for boiler smoke tolerance
Increase, each several part heating surface flow velocity improve, and then bring abrasion it is new the problem of.
Utility model content
The purpose of this utility model is to provide a kind of water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct.
The utility model is solves the problems, such as to propose in background technology, and the technical solution taken is：
A kind of water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct, including burner hearth and flue, in the lower part cloth of burner hearth
Fluidized bed combustion chamber is equipped with, scum pipe is provided with the middle part of fluidized bed combustion chamber, the outer end of the scum pipe extends to fluidisation
The outside of bed combustor, water-coal-slurry feed pipe is equipped with the front wall lower part of fluidized bed combustion chamber and mends bed material pipe, water-coal-slurry charging
Pipe is arranged in fluidized bed combustion room supplies water-coal-slurry by charging pump to fluidized bed combustion chamber, mend bed material pipe also with fluidized bed combustion
Room is mutually common to supplies bed material or unclassified stores to fluidized bed combustion chamber, and secondary air channel, secondary air channel are set around burner hearth
Outlet be arranged on the top of fluidized bed combustion chamber, the entrance of secondary air channel is communicated with the external world, in flue from top to bottom successively
Superheater, economizer and air preheater are provided with, high-temperature heat insulation separator, high-temperature heat insulation separation are additionally provided with behind burner hearth
Device is communicated with the upper outlet of burner hearth, and the lower riser of high-temperature heat insulation separator is connected with returning charge valve, returning charge valve and fluid bed
Combustion chamber communicates, and the central upper portion Exported Cone of high-temperature heat insulation separator is communicated with flue.
Preferably, fluidized bed combustion chamber described in the utility model is water cooled membrane wall construction.
Preferably, scum pipe described in the utility model is to be vertically arranged.
Preferably, the outlet of secondary air channel described in the utility model is arranged for rectangle and individual layer.
Preferably, the heating surface of superheater and economizer described in the utility model is all horizontally disposed form.
Preferably, air preheater described in the utility model is arranged in the lower part of flue using vertical pipe type stagger arrangement form.
Preferably, returning charge valve described in the utility model is self-balancing type returning charge valve.
The utility model employs the newest fluidised form re-construction theory of recirculating fluidized bed, while using efficient high-temperature heat insulation point
From device and low energy consumption self-balancing returning charge valve, the more conventional circulating fluidized bed boiler of separator classification incising control d99 and d50 is significantly
Reduce, in the thin bed of material, sunken bed pressure operation, burner hearth material concentration is greatly improved with the bed mass for flowing through separator,
Boiler has been ensured under coal water slurry fuel combustion case, can be to realize efficient heat transfer under sunken bed temperature in burner hearth.Boiler uses sunken bed
Temperature design, the low raw emissions for reducing nitrogen oxides in effluent of bed temperature.The very thin water-coal-slurry of particle is used on boiler structure
Recirculating fluidized bed burns, and can catch uncombusted carbon particle under conditions of low-temperature burning with separator and return to burner hearth two
Secondary burning, solves due to the high problem of residual carbon content in the flying dust that low-temperature burning is brought.Back-end surfaces use horizontal junction configuration
Formula, easy to deashing, boiler operatiopn operation and maintenance repair are easy.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Embodiment
Embodiment 1
As shown in Figure 1, a kind of water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct, including burner hearth 6 and flue 12,
The lower disposed of burner hearth 6 has the fluidized bed combustion chamber 2 of water cooled membrane wall construction, and the middle part of fluidized bed combustion chamber 2 is provided with row
Slag pipe 1, scum pipe 1 is is vertically arranged, and the outer end of the scum pipe 1 extends to the outside of fluidized bed combustion chamber 2, in fluidized bed combustion
The front wall lower part for burning room 2 is equipped with water-coal-slurry feed pipe 5 and mends bed material pipe 4, and water-coal-slurry feed pipe 5 is arranged on fluidized bed combustion chamber 2
It is interior that water-coal-slurry is supplied to fluidized bed combustion chamber 2 by charging pump, mend bed material pipe 4 and be also common to 2 phase of fluidized bed combustion chamber to fluidisation
Bed combustor 2 supplies bed material or unclassified stores, secondary air channel 3 is set around burner hearth 6, the outlet of secondary air channel 3 is arranged on
The top of fluidized bed combustion chamber 2, the entrance of secondary air channel 3 are communicated with the external world, and the outlet of secondary air channel 3 is rectangle and single layer cloth
Put, be disposed with superheater 9, economizer 10 and air preheater 11 from top to bottom in flue 12, also set behind burner hearth 6
High-temperature heat insulation separator 7 is equipped with, high-temperature heat insulation separator 7 is communicated with the upper outlet of burner hearth 6, under high-temperature heat insulation separator 7
Portion's standpipe is connected with returning charge valve 8, and returning charge valve 8 is communicated with fluidized bed combustion chamber 2, and the central upper portion of high-temperature heat insulation separator 7 goes out
Mouth cylinder is communicated with flue 12.
The heating surface of superheater 9 and economizer 10 described in the present embodiment is all horizontally disposed form.
Air preheater 11 described in the present embodiment is arranged in the lower part of flue 12 using vertical pipe type stagger arrangement form.
Returning charge valve 8 described in the present embodiment is self-balancing type returning charge valve.
Claims (7)
1. a kind of water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct, including burner hearth (6) and flue (12), it is characterized in that
The lower disposed of burner hearth (6) has fluidized bed combustion chamber (2), and scum pipe (1), institute are provided with the middle part of fluidized bed combustion chamber (2)
The outer end for stating scum pipe (1) extends to the outside of fluidized bed combustion chamber (2), is equipped with the front wall lower part of fluidized bed combustion chamber (2)
Water-coal-slurry feed pipe (5) and benefit bed material pipe (4), water-coal-slurry feed pipe (5), which is arranged in fluidized bed combustion chamber (2), passes through charging pump
Water-coal-slurry is supplied to fluidized bed combustion chamber (2), bed material pipe (4) is mended and is also mutually common to fluidized bed combustion with fluidized bed combustion chamber (2)
Bed material or unclassified stores are supplied in room (2), and secondary air channel (3) is set around burner hearth (6), and the outlet of secondary air channel (3) is set
On the top of fluidized bed combustion chamber (2), the entrance of secondary air channel (3) is communicated with the external world, in flue (12) from top to bottom successively
Superheater (9), economizer (10) and air preheater (11) are provided with, high-temperature heat insulation separation is additionally provided with below in burner hearth (6)
Device (7), high-temperature heat insulation separator (7) are communicated with the upper outlet of burner hearth (6), the lower riser of high-temperature heat insulation separator (7) with
Returning charge valve (8) is connected, and returning charge valve (8) is communicated with fluidized bed combustion chamber (2), and the central upper portion of high-temperature heat insulation separator (7) goes out
Mouth cylinder is communicated with flue (12).
A kind of 2. water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct according to claim 1, it is characterized in that described
Fluidized bed combustion chamber (2) be water cooled membrane wall construction.
A kind of 3. water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct according to claim 1, it is characterized in that described
Scum pipe (1) to be vertically arranged.
A kind of 4. water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct according to claim 1, it is characterized in that described
The outlet of secondary air channel (3) arranged for rectangle and individual layer.
A kind of 5. water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct according to claim 1, it is characterized in that described
Superheater (9) and the heating surface of economizer (10) be all horizontally disposed form.
A kind of 6. water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct according to claim 1, it is characterized in that described
Air preheater (11) lower parts of flue (12) is arranged in using vertical pipe type stagger arrangement form.
A kind of 7. water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct according to claim 1, it is characterized in that described
Returning charge valve (8) be self-balancing type returning charge valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721138960.XU CN207279612U (en) | 2017-09-06 | 2017-09-06 | A kind of water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721138960.XU CN207279612U (en) | 2017-09-06 | 2017-09-06 | A kind of water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct |
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| Publication Number | Publication Date |
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| CN207279612U true CN207279612U (en) | 2018-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721138960.XU Active CN207279612U (en) | 2017-09-06 | 2017-09-06 | A kind of water-coal-slurry circulating fluidized bed boiler based on fluidised form reconstruct |
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| Country | Link |
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| CN (1) | CN207279612U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058963A (en) * | 2018-09-29 | 2018-12-21 | 青岛特利尔环保股份有限公司 | Fluidised form balances the ciculation fluidized fired steam boiler of water-coal-slurry and its combustion method |
| CN109059263A (en) * | 2018-09-29 | 2018-12-21 | 青岛特利尔环保股份有限公司 | Fluidised form balances the ciculation fluidized burning hot-water boiler of water-coal-slurry and its combustion method |
| CN109058978A (en) * | 2018-09-29 | 2018-12-21 | 青岛特利尔环保股份有限公司 | Double fuel boiler system |
-
2017
- 2017-09-06 CN CN201721138960.XU patent/CN207279612U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058963A (en) * | 2018-09-29 | 2018-12-21 | 青岛特利尔环保股份有限公司 | Fluidised form balances the ciculation fluidized fired steam boiler of water-coal-slurry and its combustion method |
| CN109059263A (en) * | 2018-09-29 | 2018-12-21 | 青岛特利尔环保股份有限公司 | Fluidised form balances the ciculation fluidized burning hot-water boiler of water-coal-slurry and its combustion method |
| CN109058978A (en) * | 2018-09-29 | 2018-12-21 | 青岛特利尔环保股份有限公司 | Double fuel boiler system |
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