CN202733883U - Circulating fluidized bed boiler - Google Patents
Circulating fluidized bed boiler Download PDFInfo
- Publication number
- CN202733883U CN202733883U CN201220355847.8U CN201220355847U CN202733883U CN 202733883 U CN202733883 U CN 202733883U CN 201220355847 U CN201220355847 U CN 201220355847U CN 202733883 U CN202733883 U CN 202733883U
- Authority
- CN
- China
- Prior art keywords
- burner hearth
- air
- distribution plate
- premixer
- boiler
- 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.)
- Expired - Fee Related
Links
- 239000000428 dust Substances 0.000 claims abstract description 20
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 7
- 230000002745 absorbent Effects 0.000 abstract description 7
- 239000002250 absorbent Substances 0.000 abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 6
- 239000011574 phosphorus Substances 0.000 abstract description 6
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 abstract description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003245 coal Substances 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 abstract description 3
- 239000011593 sulfur Substances 0.000 abstract description 3
- 239000007787 solid Substances 0.000 abstract 2
- 239000004744 fabric Substances 0.000 abstract 1
- 239000002893 slag Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 33
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a circulating fluidized bed boiler, which belongs to the field of boilers. The boiler comprises a cyclone mixer, a premixing chamber, an air distributing plate, a slag discharge opening, a material inlet, an igniter, heat exchanging tube, a cyclone dust collector, a tail heat receiver, a coal economizer and a cloth bag-type dust collector; through premixing and combusting yellow phosphorus tail gas, the temperature in the boiler can be stabilized at more than 870 DEG C; and solid phosphorus and solid sulfur absorbents are added in the combustion process, so as to remove phosphorus and sulfur, so that a corrosion problem of the boiler is completely solved.
Description
Technical field
The utility model relates to a kind of CFBB, belongs to field of boilers.
Background technology
Yellow phosphorus is the basic raw material of national economy, has extensive use in national economy.1 ton of yellow phosphorus of every production, the by-product yellow phosphoric tail gas is 2500-3000m approximately
3Contain CO 85-95% in the tail gas, total sulfur 0.8-8.0g/m
3, total phosphorus 0.5-1.5 g/m
3With some other impurity, calorific capacity 10.5-11MJ/m
3, having very high value, China produces phosphorus big country, and production capacity accounts for 80% of world's aggregated capacity; Output phosphor was 89.9 ten thousand tons in 2010, to about 2,400,000,000 m of airborne release
3Yellow phosphoric tail gas.Present domestic yellow phosphoric tail gas utilization rate less than 30%, most enterprises have not only caused energy waste with the rear directly discharging of its burning, and atmospheric environment has also been caused pollution.
Because yellow phosphoric tail gas has higher calorific value, many enterprises attempt adopting yellow phosphoric tail gas to replace the coal-fired steam boiler that burns.But contain a small amount of H in the tail gas
2S, PH
3, (the P that produces behind the exhaust combustion
2O
5)
2And SO
2Can corrode heat exchanger and heat exchange tube wall in the burner hearth, just can cause perforation within 7-90 days, boiler is stopped using.For example, a 4t phosphorus of Yichang Yellow Phosphorous Plant furnace exhaust gas boiler is stopped using from installing to go into operation to, and the time only is 3 months, and Sichuan chemical company adopts 2 4t steam boiler burning yellow phosphoric tail gas, just scraps because of serious corrosion after 40 days.
" Yellow Phosphorus Industry entry criteria " regulation according to promulgation in 2008: " the phosphorus furnace exhaust gas must not in linely burn, and must realize energy or resource recycling, and newly-built yellow phosphorus unit tail gas comprehensive utilization ratio must reach more than 90%." how under the condition of not corroding gas fired-boiler, utilize yellow phosphoric tail gas heat energy, will become Yellow Phosphorus Industry and seek energy-saving and emission-reduction, one of the important technology on the road of consumption reduction.
Summary of the invention
The purpose of this utility model is to provide a kind of CFBB, this device adopts premixed combustion mode yellow phosphoric tail gas that burns, and is not adding fire coal, in the situation of the yellow phosphoric tail gas that burns separately, can make the interior temperature stabilization of stove more than 870 ℃, reach existing fire coal circulating fluid bed ignition temperature.Remove corrosive gas by in the yellow phosphoric tail gas combustion process, adding the Ca base absorbant, thoroughly solve boiler corrosion in the combustion process and to the pollution problem of atmosphere.
CFBB of the present utility model comprises cyclone mixer 1, premixer 2, air distribution plate 3, slag-drip opening 4, burner hearth 5, feeder 6, igniter 7, heat exchanger tube 8, cyclone dust collectors 9, circulation ash-removing mouth 10, afterbody be heated economizer 11, sack cleaner 12, air-introduced machine I 13 and air-introduced machine II 14; Wherein air-introduced machine I 13 is connected with air-introduced machine II and is connected with swirl-flow premixed device 1, swirl-flow premixed device 1 is communicated with burner hearth 5 by premixer 2, air distribution plate 3 is arranged on 4 in premixer 2 and burner hearth, slag-drip opening 4 is arranged on the air distribution plate 3, feeder 6 and igniter 7 are arranged on a side of burner hearth 5, heat exchanger tube 8 is positioned at burner hearth 5 inside, burner hearth 5 outlets link to each other with cyclone dust collectors 9, cyclone dust collectors 9 ash discharging holes link to each other with burner hearth 5 and are provided with circulation ash-removing mouth 10, cyclone dust collectors 9 outlet is connected with the afterbody economizer 11 that is heated, and the afterbody economizer 11 that is heated is connected with sack cleaner 12.
The utility model premixer 2 is height 0.3-0.4m, and the cross section radius is the cylindrical of 1.2-1.4m.
On the air distribution plate 3 described in the utility model with aperture.
Cyclone mixer material described in the utility model is stainless steel material, and the material model is 321 types.
Adding the Ca base absorbant from feeder 6 in the combustion process described in the utility model removes corrosive gas.
During use, respectively air and yellow phosphoric tail gas are introduced swirl-flow premixed device 1 by air-introduced machine I 13 and air-introduced machine II 14, then pass in the premixer 2 and mix, premixed gas sprays into burner hearth 5 from air distribution plate 3 apertures, in burner hearth 5, ignite by igniter 7, the Ca base absorbant enters burner hearth 5 from feeder 6, and places on the air distribution plate 3, and corrosive gas is removed; The heat energy that produces in the yellow phosphoric tail gas combustion process, recycle by heat exchanger tube 8, produce water vapour etc., be in the absorbent of fluidized state in the burner hearth, capture to reenter in the burner hearth in 5 by cyclone dust collectors 9 and react, the unnecessary absorbent of circulation ash-removing mouth 10 regular discharges is with temperature in the control stove; The granule of not removed by cyclone dust collectors 9 enters the afterbody economizer 11 that is heated with hot-air, enters at last sack cleaner 12 and removes; Be positioned at the slag-drip opening 4 on the air distribution plate 3, regularly discharge the absorbent particles that loses assimilation effect in the burner hearth.This boiler can be used for Yellow Phosphorous Plant and produces water vapour, or is used for generating.
The utility model has the following advantages with respect to prior art:
The utility model CFBB adds cyclone mixer and strengthens the method that gas mixes by reducing premixer's height, has prevented that yellow phosphoric tail gas from the dieseling in the oxygen mix process, having realized the premixed combustion of yellow phosphoric tail gas.Do not adding any other fuel, in the situation of the yellow phosphoric tail gas that burns separately, maximum combustion temperature has reached 1104 ℃, and temperature can be stabilized in more than 870 ℃ in the stove in the air-fuel ratio scope of 2.5-4.2.Reach existing coal-fired fluidized bed ignition temperature fully, for enterprise has saved coal-fired use amount, lowered production cost.Rely on the Ca base absorbant in the burner hearth to remove the corrosive gas that produces after the yellow phosphoric tail gas burning, solved yellow phosphoric tail gas etching problem to boiler in combustion process.The utility model boiler does not arrange Secondary Air and sends into mouth, so that local reduction atmosphere can not occur in the burner hearth, has improved the Ca base absorbant to SO
2Assimilation effect, reduced the pollution to atmospheric environment; The dust that produces in fluid mapper process in addition also will be removed by sack cleaner, avoid environmental pollution.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Among the figure: the 1st, cyclone mixer; The 2nd, the premixer; The 3rd, air distribution plate; The 4th, slag-drip opening; The 5th, burner hearth; The 6th, feeder; The 7th, igniter; The 8th, heat exchanger tube; The 9th, cyclone dust collectors; The 10th, the circulation ash-removing mouth; The 11st, the afterbody economizer that is heated; The 12nd, sack cleaner; The 13rd, air-introduced machine I; The 14th, air-introduced machine II.
The specific embodiment
Below by drawings and Examples the utility model is described in further detail, but protection domain of the present utility model is not limited to described content.
The utility model CFBB comprises cyclone mixer 1, premixer 2, air distribution plate 3, slag-drip opening 4, burner hearth 5, feeder 6, igniter 7, heat exchanger tube 8, cyclone dust collectors 9, circulation ash-removing mouth 10, afterbody be heated economizer 11, sack cleaner 12, air-introduced machine I 13 and air-introduced machine II 14; Wherein air-introduced machine I 13 is connected with air-introduced machine II and is connected with swirl-flow premixed device 1, swirl-flow premixed device 1 is communicated with burner hearth 5 by premixer 2, air distribution plate 3 is arranged on 5 in premixer 2 and burner hearth, on the air distribution plate 3 with aperture, slag-drip opening 4 is arranged on the air distribution plate 3, feeder 6 and igniter 7 are arranged on a side of burner hearth 5, heat exchanger tube 8 is positioned at burner hearth 5 inside, burner hearth 5 outlets link to each other with cyclone dust collectors 9, cyclone dust collectors 9 ash discharging holes link to each other with burner hearth 5 and are provided with circulation ash-removing mouth 10, cyclone dust collectors 9 outlet is connected with the afterbody economizer 11 that is heated, and the afterbody economizer 11 that is heated is connected with sack cleaner 12.(see figure 1)
This boiler is when implementing to produce, respectively air and yellow phosphoric tail gas are introduced swirl-flow premixed device 1 by air-introduced machine I 13 and air-introduced machine II 14, then pass into rapid mixing in the premixer 2, the pressure drop of the 1000-2000Pa that produces via bed afterwards, make premixed gas spray into burner hearth 5 from air distribution plate 3 apertures, ignite by igniter 7 in burner hearth 5, the Ca base absorbant enters the burner hearth 5 from feeder 6, and place on the air distribution plate 3, corrosive gas is removed; The heat energy that produces in the yellow phosphoric tail gas combustion process, recycle by heat exchanger tube 8, produce water vapour, be in the absorbent of fluidized state in the burner hearth 5, reenter after capturing by cyclone dust collectors 9 in the burner hearth in 5 and react, circulation ash-removing mouth 10 regular discharges go out unnecessary absorbent with temperature in the control stove; The granule of not removed by cyclone dust collectors 9 enters the afterbody economizer 11 that is heated with hot-air, enters at last sack cleaner 12 and removes; Be positioned at the slag-drip opening 4 on the air distribution plate 3, regularly discharge the absorbent particles that loses assimilation effect in the burner hearth.
Claims (5)
1. CFBB, it is characterized in that: it comprises cyclone mixer (1), premixer (2), air distribution plate (3), slag-drip opening (4), burner hearth (5), feeder (6), igniter (7), heat exchanger tube (8), cyclone dust collectors (9), circulation ash-removing mouth (10), afterbody be heated economizer (11), sack cleaner (12), air-introduced machine I(13) and air-introduced machine II(14); Wherein air-introduced machine I and II(13,14) be connected with swirl-flow premixed device (1), cyclone mixer (1) is communicated with burner hearth (5) by premixer (2), air distribution plate (3) is arranged between premixer (2) and burner hearth (5), slag-drip opening (4) is arranged on the air distribution plate (3), feeder (6) and igniter (7) are arranged on a side of burner hearth (5), heat exchanger tube (8) is positioned at burner hearth (5) inside, burner hearth (5) outlet links to each other with cyclone dust collectors (9), the same burner hearth of cyclone dust collectors (9) ash discharging hole (5) links to each other and is provided with circulation ash-removing mouth (10), cyclone dust collectors (9) outlets is connected with the afterbody economizer (11) that is heated, afterbody economizer (11) delivery port that is heated is connected with heat exchanger tube (8), and the afterbody economizer (11) that is heated is connected with sack cleaner (12).
2. CFBB according to claim 1 is characterized in that: premixer (2) are height 0.3-0.4m, and the cross section radius is the cylindrical of 1.2-1.4m.
3. CFBB according to claim 1 is characterized in that: air distribution plate (3) is upper with aperture.
4. CFBB according to claim 1, it is characterized in that: cyclone mixer (1) material is stainless steel material, and the material model is 321 types.
5. CFBB according to claim 1 is characterized in that: add the Ca base absorbant from feeder (6) in the combustion process corrosive gas is removed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220355847.8U CN202733883U (en) | 2012-07-23 | 2012-07-23 | Circulating fluidized bed boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220355847.8U CN202733883U (en) | 2012-07-23 | 2012-07-23 | Circulating fluidized bed boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202733883U true CN202733883U (en) | 2013-02-13 |
Family
ID=47659578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220355847.8U Expired - Fee Related CN202733883U (en) | 2012-07-23 | 2012-07-23 | Circulating fluidized bed boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202733883U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879796A (en) * | 2016-04-15 | 2016-08-24 | 四川省明信投资有限公司 | Circulating fluidized bed |
| CN116571075A (en) * | 2023-07-11 | 2023-08-11 | 昆明理工大学 | Method and device for removing phosphorus in yellow phosphorus tail gas boiler by using gangue powder |
-
2012
- 2012-07-23 CN CN201220355847.8U patent/CN202733883U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105879796A (en) * | 2016-04-15 | 2016-08-24 | 四川省明信投资有限公司 | Circulating fluidized bed |
| CN116571075A (en) * | 2023-07-11 | 2023-08-11 | 昆明理工大学 | Method and device for removing phosphorus in yellow phosphorus tail gas boiler by using gangue powder |
| CN116571075B (en) * | 2023-07-11 | 2023-11-24 | 昆明理工大学 | Method and device for removing phosphorus in yellow phosphorus tail gas boiler by using gangue powder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150723 |
|
| EXPY | Termination of patent right or utility model |