CN106940010A - A kind of environment-friendly type fluidized-bed combustion boiler - Google Patents
A kind of environment-friendly type fluidized-bed combustion boiler Download PDFInfo
- Publication number
- CN106940010A CN106940010A CN201710204032.7A CN201710204032A CN106940010A CN 106940010 A CN106940010 A CN 106940010A CN 201710204032 A CN201710204032 A CN 201710204032A CN 106940010 A CN106940010 A CN 106940010A
- Authority
- CN
- China
- Prior art keywords
- boiler
- flying dust
- return box
- ash
- dust return
- 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
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 22
- 239000000428 dust Substances 0.000 claims abstract description 16
- 241001482108 Alosa pseudoharengus Species 0.000 claims abstract description 8
- 239000003245 coal Substances 0.000 claims abstract description 6
- 239000012717 electrostatic precipitator Substances 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 239000000779 smoke Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 210000000038 chest Anatomy 0.000 claims 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 20
- 239000010883 coal ash Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000005243 fluidization Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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
- F23C10/02—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed
- F23C10/04—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone
- F23C10/08—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases
- F23C10/10—Fluidised bed combustion apparatus with means specially adapted for achieving or promoting a circulating movement of particles within the bed or for a recirculation of particles entrained from the bed the particles being circulated to a section, e.g. a heat-exchange section or a return duct, at least partially shielded from the combustion zone, before being reintroduced into the combustion zone characterised by the arrangement of separation apparatus, e.g. cyclones, for separating particles from the flue gases the separation apparatus being located outside the combustion chamber
-
- 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
- F23C10/24—Devices for removal of material from the bed
- F23C10/26—Devices for removal of material from the bed combined with devices for partial reintroduction of material into the bed, e.g. after separation of agglomerated parts
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluidized-Bed Combustion And Resonant Combustion (AREA)
Abstract
A kind of environment-friendly type fluidized-bed combustion boiler, it includes being provided with the boiler of burner hearth, cyclone separator is connected in the top smoke gas port of boiler, the top exhanst gas outlet of the cyclone separator connects chimney by a horizontal flue, described cyclone separator bottom is connected with flying dust return box by the returning charge leg connected, and the flying dust return box mitered is in the gray back mouthful that boiler furnace lower combustion chamber side wall is opened up；The bottom of described flying dust return box puts grey regulating valve by one and connects a water-cooled ash cooler, and the water-cooled ash cooler is connecting grey storehouse by a defeated ash silo pump；Described chimney bottom is also connected to an electrostatic precipitator；The gray back mouthful of flying dust return box connection boiler furnace lower combustion chamber side wall, at First air vertical inlet top in combustion chamber, the position of relative coal feeding hole；It has simple in construction, using easy to operate, good reliability, by increasing ash quantity and ash concentration in burner hearth, reduces discharged nitrous oxides, the features such as improving environmental pollution.
Description
Technical field
The present invention relates to a kind of environment-friendly type fluidized-bed combustion boiler, belong to boiler plant technical field.
Background technology
In the prior art, environment-friendly type fluidized-bed combustion boiler is the discharge for realizing low NOx, is matched somebody with somebody typically by raising is attached
Cyclone efficiency, greatly improve in burner hearth ash concentration to reduce combustion system temperature, the rated temperature of general burner hearth is not
More than 900 DEG C, and thermal power plant boiler is influenceed by the downstream heat unit working time, typically divides the periods such as low ebb, peak；Work as boiler
Load decline or because boiler Actual combustion coal and the outlet of design coal ash deviate when, there is underload sunken bed in environment-friendly boiler
Warm flame-out, such as fire box temperature is less than 500 DEG C, and boiler fluidisation interior circulation is collapsed, and bed is flame-out, and main steam temperature does not reach specified and tail
Many negative effects such as portion's flue low-temperature corrosion, that is, influence equipment economy, and the safe operation of equipment is endangered again.
The content of the invention
It is an object of the invention to overcome the shortcomings of that prior art is present, and provide a kind of simple in construction, use operation side
Just, good reliability, by the ash quantity and ash concentration in controllable adjustment burner hearth, reduces discharged nitrous oxides, improves atmospheric environment dirty
The environment-friendly type fluidized-bed combustion boiler of dye.
The purpose of the present invention is completed by following technical solution, a kind of environment-friendly type fluidized-bed combustion boiler, and it includes setting
The boiler of burner hearth is equipped with, cyclone separator is connected in the top smoke gas port of boiler, the top flue gas of the cyclone separator goes out
Mouth connects chimney by a horizontal flue, and described cyclone separator bottom is connected with flying dust by the returning charge leg connected
Return box, the flying dust return box mitered is in the gray back mouthful that boiler furnace lower combustion chamber side wall is opened up；Described flying dust returning charge
The bottom of case puts grey regulating valve by one and connects a water-cooled ash cooler, and the water-cooled ash cooler is connected by a defeated ash silo pump
Grey storehouse.
As preferred：Described chimney bottom is also connected to an electrostatic precipitator；The flying dust return box connects pot
The gray back mouthful of stove lower furnace portion sidewall of combustion chamber, First air vertical inlet top, the position of relative coal feeding hole in combustion chamber
Place.
The present invention is the transformation to existing boiler, with simple in construction, using easy to operate, good reliability, passes through increase
Ash quantity and ash concentration in burner hearth, reduce discharged nitrous oxides, the features such as improving environmental pollution.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described in detail：Shown in Fig. 1, a kind of environment-friendly type fluidisation of the present invention
Bed boiler, it includes being provided with the boiler 10 of burner hearth 2, and cyclone separator 3 is connected in the top smoke gas port 11 of boiler 10, should
The top exhanst gas outlet of cyclone separator 3 connects chimney 12, the described bottom of cyclone separator 3 by a horizontal flue 4
Flying dust return box 6 is connected with by the returning charge leg 5 connected, the mitered of flying dust return box 6 is in the lower combustion chamber 1 of boiler furnace 2
In the gray back mouthful 13 that side wall is opened up；Grey regulating valve 7 is put by one and connects water cooling cold ash in the bottom of described flying dust return box 6
Machine 8, the water-cooled ash cooler 8 is connecting grey storehouse by a defeated ash silo pump 9.
Shown in figure, the described bottom of chimney 12 is also connected to an electrostatic precipitator 14；The gray back mouthful 13 is located at
First air vertical inlet top in combustion chamber 1, at the position of relative coal feeding hole 15.
The present invention under normal operating conditions, by fire coal generation and returning charge supplemented by ash quantity in burner hearth, coal-fired magnitude of recruitment by
Coal ash content is determined, accounts for 3%, the not middle ash quantity of returning charge is determined by the efficiency of cyclone separator, accounts for 97%, above-mentioned two condition is set
Can not be adjusted after meter sizing, and from principle analysis, boiler is in underload or higher coal ash content, it is desirable in burner hearth ash quantity and
Ash concentration synchronously declines；It is controllable by transforming return box blowing out dust leg with reference to the path of ash circulation in CFBB
High temperature returning charge ash in the circulatory system is drawn, is cooled down by dedicated water cold type ash cooler, grey storehouse is pumped to by pneumatic delivery bin, it is real
The adjustment on demand of ash quantity and ash concentration in existing boiler furnace.
Claims (2)
1. a kind of environment-friendly type fluidized-bed combustion boiler, it includes being provided with the boiler of burner hearth, is connected in the top smoke gas port of boiler
Cyclone separator, the top exhanst gas outlet of the cyclone separator connects chimney by a horizontal flue, it is characterised in that institute
The cyclone separator bottom stated is connected with flying dust return box by the returning charge leg connected, and the flying dust return box mitered is in Boiler Furnace
In the gray back mouthful that thorax lower combustion chamber side wall is opened up；Grey regulating valve is put by one and connects a water in the bottom of described flying dust return box
Cold type ash cooler, the water-cooled ash cooler is connecting grey storehouse by a defeated ash silo pump.
2. environment-friendly type fluidized-bed combustion boiler according to claim 1, it is characterised in that described chimney bottom also connects
There is an electrostatic precipitator；The flying dust return box connects the gray back mouthful of boiler furnace lower combustion chamber side wall, in combustion chamber
At First air vertical inlet top, the position of relative coal feeding hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710204032.7A CN106940010A (en) | 2017-03-30 | 2017-03-30 | A kind of environment-friendly type fluidized-bed combustion boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710204032.7A CN106940010A (en) | 2017-03-30 | 2017-03-30 | A kind of environment-friendly type fluidized-bed combustion boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106940010A true CN106940010A (en) | 2017-07-11 |
Family
ID=59463668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710204032.7A Pending CN106940010A (en) | 2017-03-30 | 2017-03-30 | A kind of environment-friendly type fluidized-bed combustion boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106940010A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829474A (en) * | 2012-09-25 | 2012-12-19 | 中国东方电气集团有限公司 | Double-bed system for preventing heating surface of boiler from being contaminated |
| CN104990071A (en) * | 2015-05-22 | 2015-10-21 | 四川省宜宾惠美线业有限责任公司 | Circulating fluidized bed boiler capable of adjusting circulating ash flow |
| CN206608948U (en) * | 2017-03-30 | 2017-11-03 | 德清县中能热电有限公司 | Environment-friendly type fluidized-bed combustion boiler |
-
2017
- 2017-03-30 CN CN201710204032.7A patent/CN106940010A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829474A (en) * | 2012-09-25 | 2012-12-19 | 中国东方电气集团有限公司 | Double-bed system for preventing heating surface of boiler from being contaminated |
| CN104990071A (en) * | 2015-05-22 | 2015-10-21 | 四川省宜宾惠美线业有限责任公司 | Circulating fluidized bed boiler capable of adjusting circulating ash flow |
| CN206608948U (en) * | 2017-03-30 | 2017-11-03 | 德清县中能热电有限公司 | Environment-friendly type fluidized-bed combustion boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170711 |