CN1966613B - Biomass gasification stove for boiler - Google Patents
Biomass gasification stove for boiler Download PDFInfo
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- CN1966613B CN1966613B CN200610154844A CN200610154844A CN1966613B CN 1966613 B CN1966613 B CN 1966613B CN 200610154844 A CN200610154844 A CN 200610154844A CN 200610154844 A CN200610154844 A CN 200610154844A CN 1966613 B CN1966613 B CN 1966613B
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- Prior art keywords
- broach hopper
- inflammable gas
- slag
- flammable gas
- biomass gasification
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Abstract
The invention disclosed a biomass gasifying stove used in boilers. On the top of the gasifying stove there is a feeding throat, while on the bottom of the hearth there are taper material cups (up bigger, down smaller); on the taper material cup, there is the blocking retainer, below which there is material vent devices. The whole flank of the taper material cups are all small holes; there is the flammable gas fairlead on the stove wall where the bottom of the taper material cup connects the dreg discharging device, on the end of the fairlead there is a valve; the wind pipe is encased in the flammable gas fairlead after being twisted on the taper material cups. The flammable gas can be educed by the vacuum caused by the wind, then the wind mixes with the flammable gas and they enter the hearth to burn; the flammable gas is educed out through the taper material cup of different sizes, the powder is filtered to make the flammable gas clean and uniform; if the systemic resistance is too large when educing the flammable gas, the educing valve is closed so the wind backflushing the taper material cup to recover the system.
Description
Technical field
The present invention relates to only use solid-fuelled combustion equipment, particularly relate to gasifying biomass such as being used for bamboo and wood, stalk, straw, produce a kind of biomass gasifying furnace that is used for medium small boiler of inflammable gas.
Background technology
Along with the day by day increase of industrial production to energy demand, energy growing tension, biomass such as the bamboo bits of throwing aside originally, wood chip, stalk, straw all are used as biomass energy.Present various biomass gasifying furnace has had a variety of, and disclosed as CN200320114185 is a kind of biomass gasifying furnace, also can be used for the gasification of various biomass, but because the lead-out mode difference can not be specifically designed to boiler.CN01108139 is disclosed to be a kind of equipment for gasification that is used for rural area coal gas, and systematic comparison is big.CN02248929 is disclosed to be a kind of moving-bed cracker, its principle of work be with charcoal as catalyzer, the vapourizing furnace of Pintsch process biomass, but its flammable high-speed gas draws by the blower fan air blast, this design windage is big, air loss is big.
Summary of the invention
The object of the present invention is to provide employing pressurized air to expand at a high speed and produce a kind of biomass gasification stove for boiler that vacuum is drawn the method for inflammable gas.
The technical solution adopted for the present invention to solve the technical problems is:
Have opening for feed above the vapourizing furnace upper furnace, the burner hearth lower end is equipped with up big and down small broach hopper successively, and broach hopper bottom is provided with the backgauge barrier, ash accepting drawing mechanism below the backgauge barrier.The whole side of broach hopper is covered with small through hole, the broach hopper bottom has the inflammable gas fairlead with the vapourizing furnace sidewall of slag off apparatus junction, inflammable gas fairlead end is connected to valve, and the compressed air pipe that inserts outside stove twines the back sky at the broach hopper excircle and is enclosed within the inflammable gas fairlead.
Described lime-ash drawing mechanism comprises taper collection slag pipe, spiral slag off apparatus, transmission system and CD-ROM drive motor; Taper collection slag pipe is contained under the broach hopper, in the taper collection slag pipe spiral slag off apparatus is housed, and drives the spiral slag off apparatus by motor through transmission system and rotates, and the spiral slag off apparatus picks out cinder notch.
The whole side of described broach hopper is covered with the small through hole that varies in size, and its aperture is 0.5～6mm.
The compressed air pipe outlet is than the short 50～150mm of inflammable gas fairlead outlet, and the vacuum of utilizing the compressed air outlet rapid expansion to form is drawn inflammable gas by valve.
Compressed air pipe twines 2～3 circles at the broach hopper excircle.
The present invention compares with background technology, and the useful effect that has is:
1, the vacuum of this biomass gasification stove for boiler, the initiation of employing pressurized air is drawn inflammable gas, then with blast boiler furnace after pressurized air mixes and burn, this structure blast is big, windage is little, energy consumption is low, is applicable to the big requirement of medium small boiler requirement blast.
2, be provided with broach hopper in the middle of the burner hearth, its side has the aperture that all size differs, and its aperture back is provided with the inflammable gas outlet, and being provided with so mainly is in order to filter out various dust, make inflammable gas cleaner, it is more even to guarantee to draw gas ratio simultaneously.
3, when inflammable gas extraction system resistance is big,, make pressurized air blowback broach hopper aperture, make system recovery normal valve closes.
The present invention compares with background technology, and the useful effect that has is:
1, the vacuum of this biomass gasification stove for boiler, the initiation of employing pressurized air is drawn inflammable gas, then with blast boiler furnace after pressurized air mixes and burn, this structure blast is big, windage is little, energy consumption is low, is applicable to the big requirement of medium small boiler requirement blast.
2, be provided with broach hopper in the middle of the burner hearth, its side has the aperture that all size differs, and its aperture back is provided with the inflammable gas outlet, and being provided with so mainly is in order to filter out various dust, make inflammable gas cleaner, it is more even to guarantee to draw gas ratio simultaneously.
3, when inflammable gas extraction system resistance is big,, make pressurized air blowback broach hopper aperture, make system recovery normal the valve closes at combustion gas outlet place.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the sectional view of Fig. 1.
Among the figure: 1-collection slag pipe, 2-compressed air pipe, 3-burner hearth, the adiabatic furnace wall of 4-, 5-opening for feed, 6-backgauge barrier, 7-broach hopper, 8-inflammable gas fairlead, 9-spiral slag off apparatus, 10-compressed air outlet, the 11-transmission system, 12-CD-ROM drive motor, 13-slag notch, 14-valve.
Embodiment
As shown in Figure 1 and Figure 2, the present invention has opening for feed 5 above vapourizing furnace upper furnace 3, and burner hearth 3 lower ends are equipped with up big and down small broach hopper 7 successively, and broach hopper 7 bottoms are provided with backgauge barrier 6, backgauge barrier 6 following ash accepting drawing mechanisms.Broach hopper 7 whole sides are covered with the small through hole that varies in size, and its aperture is 0.5～6mm.The vapourizing furnace sidewall of broach hopper 7 bottoms and slag off apparatus junction has inflammable gas fairlead 8, inflammable gas fairlead 8 ends are connected to valve 14, the compressed air pipe 2 that inserts outside stove is after broach hopper 7 excircles twine 2～3 circles, sky is enclosed within the inflammable gas fairlead 8, compressed air pipe 2 outlets are than the short 50～150mm of inflammable gas fairlead 8 outlets, and the vacuum of utilizing the compressed air outlet rapid expansion to form is drawn inflammable gas by valve 14.
Described lime-ash drawing mechanism is to comprise taper collection slag pipe 1, spiral slag off apparatus 9, transmission system 11 and CD-ROM drive motor 12 compositions; Taper collection slag pipe 1 is contained in broach hopper 7 times, and the spiral slag off apparatus 9 that is equipped with in the taper collection slag pipe 1 drives spiral slag off apparatus 9 by motor 12 through transmission system 11 and rotates, and spiral slag off apparatus 9 picks out cinder notch 13.
As shown in Figure 1, biomass materials such as bamboo bits, wood chip, stalk, straw are put into vapourizing furnace from its top feed mouth 5 of vapourizing furnace, the furnace wall is adiabatic furnace wall 4, in burner hearth 3, be equipped with catalyzer such as charcoal above the backgauge barrier 6, after the high temperature of charcoal made the temperature of biomass material reach gasification temperature, the reaction of beginning generating gasification produced inflammable gas, this inflammable gas is compressed the vacuum of air generation and guides outlet into, is brought into the boiler furnace internal combustion by high-speed air.When catalyzer ignites after biomass gasification reaction begins, do not need to continue to add catalyzer, the heat that can utilize biomass self to produce is fully kept gasification reaction again, continuously charging this moment, continuously slag tap, so whole gasification can be carried out continuously.Lime-ash after reacting completely enters collection slag pipe by the gap of backgauge barrier, by helix transporting device lime-ash is discharged slag notch.Have the aperture that all size differs on the broach hopper, its aperture back is provided with the inflammable gas outlet, and being provided with so mainly is in order to filter out various dust, to make inflammable gas cleaner, and it is more even to guarantee to draw gas ratio simultaneously.
In the present embodiment, inflammable gas fairlead 8 is the above pipe of diameter 30mm, below the compressed air pipe diameter 10mm, the above pressurized air of 0.8MPa is arranged in the compressed air pipe, pressurized air in the compressed air pipe expands and outflow fast owing to rapid at compressed air outlet 10 places, make the exit form parital vacuum, this vacuum is drawn inflammable gas, and with air mixed after enter boiler furnace and burn.Compressed air pipe twines more than two circles at circumference below the broach hopper, to increase the temperature of inner air tube, increases thermo-efficiency.
This medium small boiler is drawn inflammable gas with the vacuum that biomass gasifying furnace adopts pressurized air to cause, then be blown into boiler furnace after pressurized air mixes and burn, this structure blast is big, windage is little.Is provided with broach hopper in the middle of the burner hearth, has the aperture that all size differs on it, its aperture back is provided with the inflammable gas outlet, and being provided with so mainly is in order to filter out various dust, to make inflammable gas cleaner, and it is more even to guarantee to draw gas ratio simultaneously.This vapourizing furnace is provided with back blow port, when inflammable gas extraction system resistance is big, with valve closes, makes the aperture of pressurized air blowback broach hopper, makes system recovery normal.
Above-mentioned embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (5)
1. biomass gasification stove for boiler, have opening for feed (5) in vapourizing furnace upper furnace (3) top, burner hearth (3) lower end is equipped with up big and down small broach hopper (7) successively, and broach hopper (7) bottom is provided with backgauge barrier (6), the following ash accepting drawing mechanism of backgauge barrier (6); It is characterized in that: the whole side of broach hopper (7) is covered with small through hole, broach hopper (7) bottom has inflammable gas fairlead (8) with the vapourizing furnace sidewall of slag off apparatus junction, inflammable gas fairlead (8) end is connected to valve (14), and the compressed air pipe (2) that inserts outside stove twines the back sky at broach hopper (7) excircle and is enclosed within the inflammable gas fairlead (8).
2. a kind of biomass gasification stove for boiler according to claim 1 is characterized in that: described lime-ash drawing mechanism comprises taper collection slag pipe (1), spiral slag off apparatus (9), transmission system (11) and CD-ROM drive motor (12); Taper collection slag pipe (1) is contained under the broach hopper (7), and spiral slag off apparatus (9) is housed in the taper collection slag pipe (1), drives spiral slag off apparatus (9) by motor (12) through transmission system (11) and rotates, and spiral slag off apparatus (9) picks out cinder notch (13).
3. a kind of biomass gasification stove for boiler according to claim 1 is characterized in that: the whole side of described broach hopper (7) is covered with the small through hole that varies in size, and its aperture is 0.5～6mm.
4. a kind of biomass gasification stove for boiler according to claim 1, it is characterized in that: compressed air pipe (2) outlet is than the short 50～150mm of inflammable gas fairlead (8) outlet, and the vacuum of utilizing the compressed air outlet rapid expansion to form is drawn inflammable gas by valve (14).
5. a kind of biomass gasification stove for boiler according to claim 1 is characterized in that: compressed air pipe (2) twines 2～3 circles at broach hopper (7) excircle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610154844A CN1966613B (en) | 2006-11-27 | 2006-11-27 | Biomass gasification stove for boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610154844A CN1966613B (en) | 2006-11-27 | 2006-11-27 | Biomass gasification stove for boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1966613A CN1966613A (en) | 2007-05-23 |
| CN1966613B true CN1966613B (en) | 2010-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610154844A Expired - Fee Related CN1966613B (en) | 2006-11-27 | 2006-11-27 | Biomass gasification stove for boiler |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6039774A (en) * | 1994-06-07 | 2000-03-21 | Mcmullen; Frederick G. | Pyrolytic conversion of organic feedstock and waste |
| CN2418361Y (en) * | 2000-04-05 | 2001-02-07 | 江西南方火化机械制造总公司 | Ash-collection-cremator cooling apparatus |
| CN1375540A (en) * | 2001-03-16 | 2002-10-23 | 中国林业科学研究院林产化学工业研究所 | Biomass internally circulating conic fluidized bed gasifying process and equipment |
| CN2581453Y (en) * | 2002-10-28 | 2003-10-22 | 中国科学院广州能源研究所 | Movable bed cracking device |
| CN2663814Y (en) * | 2003-11-24 | 2004-12-15 | 韩建云 | Biomass gasification furnace |
| CN200972149Y (en) * | 2006-11-27 | 2007-11-07 | 郑传祥 | Biomass gasification stove for middle small size boiler |
-
2006
- 2006-11-27 CN CN200610154844A patent/CN1966613B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6039774A (en) * | 1994-06-07 | 2000-03-21 | Mcmullen; Frederick G. | Pyrolytic conversion of organic feedstock and waste |
| CN2418361Y (en) * | 2000-04-05 | 2001-02-07 | 江西南方火化机械制造总公司 | Ash-collection-cremator cooling apparatus |
| CN1375540A (en) * | 2001-03-16 | 2002-10-23 | 中国林业科学研究院林产化学工业研究所 | Biomass internally circulating conic fluidized bed gasifying process and equipment |
| CN2581453Y (en) * | 2002-10-28 | 2003-10-22 | 中国科学院广州能源研究所 | Movable bed cracking device |
| CN2663814Y (en) * | 2003-11-24 | 2004-12-15 | 韩建云 | Biomass gasification furnace |
| CN200972149Y (en) * | 2006-11-27 | 2007-11-07 | 郑传祥 | Biomass gasification stove for middle small size boiler |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2006-38441A 2006.02.09 |
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| Publication number | Publication date |
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| CN1966613A (en) | 2007-05-23 |
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Granted publication date: 20100519 Termination date: 20101127 |