CN102401468A - Biomass-fueled internal circulation mechanical fluidized bed internal dedusting organic heat carrier boiler - Google Patents
Biomass-fueled internal circulation mechanical fluidized bed internal dedusting organic heat carrier boiler Download PDFInfo
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- CN102401468A CN102401468A CN2010102766801A CN201010276680A CN102401468A CN 102401468 A CN102401468 A CN 102401468A CN 2010102766801 A CN2010102766801 A CN 2010102766801A CN 201010276680 A CN201010276680 A CN 201010276680A CN 102401468 A CN102401468 A CN 102401468A
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Abstract
The invention discloses a high-efficiency energy-saving and emission-reduction biomass-fueled internal circulation mechanical fluidized bed internal dedusting organic heat carrier boiler. The heat carrier boiler comprises a main combustion chamber, a Venturi tube internal circulator, a mechanical fluidized bed and an internal deduster, wherein the main combustion chamber consists of a square furnace hearth formed by winding an organic heat carrier tube bundle and the Venturi tube internal circulator and a mechanical fluidized machine which are arranged in the lower part of the combustion chamber; the internal deduster is arranged in the center of the main combustion chamber; the outer wall of the internal deduster is formed by winding the organic heat carrier tube bundle; and a central tube and a vortex sheet are made of heat-resisting steel. The biomass-fueled internal circulation mechanical fluidized bed internal dedusting organic heat carrier boiler is high in combustion strength, full combustion, high in heat conversion efficiency and large in adjustment range, prevents scorification, can operate stably for a long time and can be controlled intelligently and automatically.
Description
Technical field
The invention belongs to a kind of regenerative resource switch technology field, relate to the inner circulation mechanical fluidized bed interior dedusting boiler of organic heat carrier of a kind of efficient energy-saving and emission-reducing firing biomass fuel.
Background technology
The biomass energy application technology had obtained developing rapidly in recent years under the big force urges of the Chinese government.Wherein particularly biomass energy curing direct combustion technology and application development are particularly swift and violent.But the present biomass energy of China is solidified the direct combustion technology and application level is still low, and is bigger with external advanced direct combustion technology and apparatus in comparison gap.Particularly direct combustion equipment mainly still uses the chain grate boiler of fire coal slightly through transforming.The boiler combustion efficiency of this type is low, and combustion intensity is low, slagging scorification easily, and automaticity is low, and the user was easy under the driving of interests, to continue to use coal and causes environmental pollution after particularly approval was installed.Though and CFBB can obtain better combustion efficiency but body of heater is too high can not realize miniaturization; Can't install in medium and small burning coal boiler room and substitute medium and small coal-burning boiler, can not satisfy extensive biomass energy heat supply, generating is high to the thermal efficiency that boiler proposes, boiler volume is little, combustion intensity is high, burn-off rate is high, automaticity is high, long-term working stability is good, can only burning-used biologic mass fuel etc. specification requirement.
Summary of the invention
The purpose of this invention is to provide a kind ofly can control automatically, combustion intensity is high, burn-off rate is high, the thermal efficiency is high, the exhaust gas dust discharging is low, the overall volume low height is low, can long-term stable operation, novel biomass fuel organic heat carrier that can only burning-used biologic mass fuel is boiler dedicated.
To achieve these goals; The present invention is high according to the fugitive constituent that biomass fuel had, Pintsch process is fast, be prone to form grey shell and the low combustion characteristics of ash fusion point; Adopted mechanical fluidisation technology, interior circulating technology, interior dedusting technology to carry out the boiler global design; The technical solution adopted for the present invention to solve the technical problems is: dedusting boiler of organic heat carrier in a kind of novel biomass is fuel inner circulation mechanical fluidized bed; Include circulator, mechanical fluidisation machine, interior deduster, heat convection flue in main chamber, the Venturi tube; To be main chambers be wound in square burner hearth by the organic heat carrier tube bank to its main points constitutes; Its bottom is equipped with circulator and mechanical fluidisation machine in the Venturi tube, and mechanical fluidisation machine fluidisation wing adopts hollow wind protection structure, in main chamber central authorities interior deduster has been installed; Biomass fuel is sent into main chamber by the fuel-feed machine during burning; Wind protection fluidisation wing is distributed to the main burner bottom uniformly with the fuel of sending into, and biomass fuel gets into behind the main chamber rapid pyrolysis and combustion under the hot environment effect, and fuel is the fast rotational shape and burns under the acting in conjunction of wind protection fluidisation wing and Venturi tube spout; One time wind is provided by circulator air outlet in wind protection fluidisation wing and the Venturi tube; Wind protection fluidisation wing can be rapidly be smashed the grey shell of the biomass fuel of burning and accelerated burn rate and prevented that grey shell bonding from forming slagging scorification, the big carbon granules in fuel thermal decomposition burning back under the effect of whirlwind, be thrown to four jiaos of furnace walls by Venturi tube in circulator catch and return the bottom, combustion chamber after mouthful catching and burn away, little carbon granules after the burning and hot flue gas advance mouth from interior deduster and get into interior deduster; Described interior deduster is wound in taper barrel by the organic heat carrier tube bank and constitutes shell; Interior deduster central tube and the interior deduster whirlwind sheet processed by heat-resisting steel material constitute central tube and flue gas whirlwind mouth; Secondary air channel Jiang Fengcang and interior deduster advance mouth and are communicated with secondary wind is provided; The hot flue gas that gets into from main chamber at first mixes behind interior deduster whirlwind sheet deduster in the fast rotational entering downwards with secondary wind; The ash content of after-flame is discharged by Machine for cleaning-out ash through interior deduster ash hole, and the hot flue gas after ash disposal is discharged through outlet flue by outlet flue, commentaries on classics smoke-box, heat convection flue.
The present invention adopts mechanical fluidisation, the interior recycle combustion of Venturi tube, cross section heat load can reach 3-5MW/m
2, the temperature of main chamber is controlled at about 900 ℃, the temperature of interior deduster is controlled at about 600 ℃, can effectively reduce the discharge capacity of NOx, and interior deduster can be removed about 90% flue gas ash content.The pollution of ash content be can effectively reduce, whole heat exchange efficiency of boiler and long-term stable operation performance improved convective heat exchange tube bundles.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further specified.
Fig. 1 is the cutaway view of boiler of the present invention.
Fig. 2 is the A-A cutaway view of boiler of the present invention.
1. main chambers among the figure; 2. circulator in the Venturi tube; 3. circulator spout in the Venturi tube; 4. circulator air outlet in the Venturi tube; 5. circulator feedback outlet in the Venturi tube; 6. circulator is pounced on and is caught mouth in the Venturi tube; 7. circulator air inlet in the Venturi tube; 8. mechanical fluidisation machine; 9. mechanical fluidisation machine bottom board; 10. wind is protected the fluidisation wing; 11; Mechanical fluidisation machine transmission system; 12. mechanical fluidisation machine motor and speed reducer; 13. fuel-feed machine; 14. fuel-feed machine inlet capable; 15. interior deduster; 16. interior deduster advances mouth; 17. interior deduster central tube; 18. interior deduster whirlwind sheet; 19. interior deduster outlet flue; 20. interior deduster ash hole; 21. Machine for cleaning-out ash; 22. commentaries on classics smoke-box; 23. heat convection flue; 24. flue gas deflection plate; 25. outlet flue; 26. air inlet; 27. organic heat carrier import flow equalizing ring; 28. organic heat carrier outlet flow equalizing ring; 29. organic heat carrier import; 30. organic heat carrier outlet; 31. change smoke-box thermal-insulating sealing plate; 32. external thermal insulation; 33. secondary air channel; 34. organic heat carrier tube bank; 35. wind storehouse.
The specific embodiment
With reference to Fig. 1, Fig. 2; The present invention includes circulator (2), mechanical fluidisation machine (8) fuel-feed machine (13), interior deduster (15), heat convection flue (23) in main chamber (1), the Venturi tube, main chamber (1) is made up of the square burner hearth that organic heat carrier tube bank (34) is wound in; Circulator (2) is installed in main chamber (1) bottom in the Venturi tube, and circulator (2) is caught circulator air inlet (7) formation in mouthful (6) and the Venturi tube by circulator in circulator air outlet (4), the interior circulator feedback outlet (5) of Venturi tube, the Venturi tube in circulator spout (3), the Venturi tube in the Venturi tube in the Venturi tube; Circulator air inlet (7) directly is communicated with wind storehouse (35) in the Venturi tube; Circulator spout (3) forward is installed on (1) four jiao of main chamber in the Venturi tube, and circulator seizure mouthful (6) is communicated with by the inner passage with the interior circulator feedback outlet (5) of Venturi tube in the Venturi tube; Mechanical fluidisation machine (8) is installed in the bottom of circulator (2) in the Venturi tube, and mechanical fluidisation machine (8) is made up of mechanical fluidisation machine bottom board (9), wind protection fluidisation wing (10), mechanical fluidisation machine transmission system (11), mechanical fluidisation machine motor and speed reducer (12); Interlayer is communicated with Feng Cang (35) wind protection fluidisation wing (10) through machine mechanical fluidisation machine transmission system (11) center; Interior deduster (15) is installed in the central authorities of main chamber (1), and the cone outer wall that interior deduster (15) is wound in by organic heat carrier tube bank (34), interior deduster central tube (17), interior deduster whirlwind sheet (18), interior deduster ash hole (20) constitute; Interior deduster advances mouth (16) and directly is communicated with main chamber (1) top and is communicated with the wind storehouse through secondary air channel, and interior deduster outlet flue (19) is communicated with outlet flue (25) through commentaries on classics smoke-box (22), heat convection flue (23); Heat convection flue (23) middle part is equipped with flue gas deflection plate (24).
Boiler running process and operating procedure are: at first fuel is isolated the back by quantitative feeding auger accurate quantification and wind stopping device wind and be delivered into main chamber (1) by fuel-feed machine (13), open mechanical fluidisation machine (8) simultaneously.After sending into certain fuel, close quantitative feeding auger, open air blast and air-introduced machine in right amount and open igniter and light a fire.Igniter can adopt fuel ignition machine, gas ignition machine or electric ignition machine.When fuel gets into carbon burning basically in the main chamber (1), close dynamo exploder, transfer big air-introduced machine and air blast and open quantitative feeding auger, igniting is accomplished.The about 5-8 of whole ignition process minute.
Adjust quantitative feeding auger according to loading demand after igniting is accomplished and confirm that fuel input quantity and based on fuel input quantity are adjusted air blast and air-introduced machine is confirmed correct intake.This moment, boiler got into running status.Fuel rapid pyrolysis and combustion under main chamber (1) hot environment effect of sending into by fuel-feed machine (13); Fuel is the burning of fast rotational shape under the acting in conjunction of circulator spout (3) in wind protection fluidisation wing (10) and Venturi tube; One time wind is provided by circulator air outlet (4) in wind protection fluidisation wing (10) and the Venturi tube; Wind protection fluidisation wing (10) can be smashed the grey shell of burning rapidly and accelerate burn rate and prevent that grey shell bonding from forming slagging scorification; The big carbon granules in fuel thermal decomposition burning back under the effect of whirlwind, be thrown to four jiaos of furnace walls by Venturi tube in circulator catch and return the bottom, combustion chamber after catch mouthful (6) and burn away, little carbon granules after the burning and hot flue gas through interior deduster advance mouth (16) get in deduster (15) burn away.The ash content of after-flame is discharged by Machine for cleaning-out ash (21) through interior deduster ash hole (20), and the hot flue gas after the ash disposal is discharged by outlet flue (25) through commentaries on classics smoke-box, heat convection flue.
Boiler shutdown only need be closed quantitative feeding auger and do not got final product to main chamber (1) transfer the fuel.Main chamber (1) does not promptly have naked light after about 2-3 minute.Keeping air blast, air-introduced machine operation a period of time that main chamber (1) temperature is dropped to can the Close All boiler below the ignition temperature.
Above all operations is all able to programme to be moved by procedure auto-control.
Claims (1)
- One kind biomass fuel inner circulation mechanical fluidized bed in the dedusting boiler of organic heat carrier; Include circulator, mechanical fluidisation machine, interior deduster in main chamber, the Venturi tube; It is characterized in that main chamber is wound in square furnace wall by the organic heat carrier tube bank, the bottom is equipped with circulator in the Venturi tube, and the bottom is equipped with the mechanical fluidisation machine; Interior deduster outer wall is wound in taper barrel by the organic heat carrier tube bank; Be installed in main chamber central authorities, interior deduster enters the direct and main chamber UNICOM of mouth, and interior deduster outlet flue is communicated with the heat convection flue through changeing smoke-box; Ash hole passes directly from mechanical fluidisation machine center and is communicated with Machine for cleaning-out ash, and secondary air channel Jiang Fengcang advances mouth with interior deduster and is communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102766801A CN102401468A (en) | 2010-09-09 | 2010-09-09 | Biomass-fueled internal circulation mechanical fluidized bed internal dedusting organic heat carrier boiler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102766801A CN102401468A (en) | 2010-09-09 | 2010-09-09 | Biomass-fueled internal circulation mechanical fluidized bed internal dedusting organic heat carrier boiler |
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| CN102401468A true CN102401468A (en) | 2012-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102766801A Pending CN102401468A (en) | 2010-09-09 | 2010-09-09 | Biomass-fueled internal circulation mechanical fluidized bed internal dedusting organic heat carrier boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512028A (en) * | 2012-06-21 | 2014-01-15 | 内蒙古方圆科技有限公司 | Cyclone centrifugal deashing biomass granular fuel burner |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2336195Y (en) * | 1998-10-08 | 1999-09-01 | 王政民 | Internal circulation fluid-bed combustion furnace with longitudinal cyclone dust separator |
| CN2412649Y (en) * | 2000-02-08 | 2001-01-03 | 郑向阳 | Shell type internal circulation fluidized-bed boiler |
| US20090053800A1 (en) * | 2007-08-22 | 2009-02-26 | Julie Friend | Biomass Treatment Apparatus |
-
2010
- 2010-09-09 CN CN2010102766801A patent/CN102401468A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2336195Y (en) * | 1998-10-08 | 1999-09-01 | 王政民 | Internal circulation fluid-bed combustion furnace with longitudinal cyclone dust separator |
| CN2412649Y (en) * | 2000-02-08 | 2001-01-03 | 郑向阳 | Shell type internal circulation fluidized-bed boiler |
| US20090053800A1 (en) * | 2007-08-22 | 2009-02-26 | Julie Friend | Biomass Treatment Apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512028A (en) * | 2012-06-21 | 2014-01-15 | 内蒙古方圆科技有限公司 | Cyclone centrifugal deashing biomass granular fuel burner |
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Application publication date: 20120404 |