CN201857373U - Closed slag discharging device for biomass gasifying furnace and biomass gasification reaction system - Google Patents
Closed slag discharging device for biomass gasifying furnace and biomass gasification reaction system Download PDFInfo
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- CN201857373U CN201857373U CN2010205871805U CN201020587180U CN201857373U CN 201857373 U CN201857373 U CN 201857373U CN 2010205871805 U CN2010205871805 U CN 2010205871805U CN 201020587180 U CN201020587180 U CN 201020587180U CN 201857373 U CN201857373 U CN 201857373U
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- slag
- discharging device
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- biomass
- fluidized bed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Abstract
The utility model discloses a closed slag discharging device for a biomass gasifying furnace, which comprises a rotating shaft and a barrel body, wherein the rotating shaft is installed in the barrel body; a spiral blade is sleeved on the rotating shaft; a slag inlet is arranged at one end of the barrel body; a slag outlet is arranged at the other end of the barrel body; the barrel body is arranged in an oblique manner; the slag outlet is higher than the slag inlet; and the slag inlet of the barrel body is communicated with a waste outlet at the bottom part of the biomass gasifying furnace. Valves are respectively arranged at the slag inlet and the slag outlet of the slag discharging device. The closed slag discharging device for the biomass gasifying furnace can be used for stably discharging dropping ash and clinker by means of the thrust force of the spiral blade; and the obliquely arranged structure of the closed slag discharging device can be used for preventing smoke or reaction gases from leaking through the slag discharging device.
Description
Technical field
The utility model relates to industrial slag discharging device, the biomass gasification reaction system that relates in particular to the airtight slag discharging device of a kind of biomass gasifying furnace and use this device.
Background technology
Utilize fuel combustion and obtain in the equipment of energy at vapourizing furnace or boiler etc., the lime-ash that fuel combustion produces later need be discharged in stove, and purpose is for bed thickness in the regulating and controlling burner hearth, reaches the purpose of stable burning.Keeping metastable bed depth is crucial the in service of equipment, if the emulsion zone bed of material is crossed high combustion, under the given situation of air quantity, makes it bed of material fluidisation and slows down and can not blow, and easily causes and piles up the knot reef; The bed of material is crossed low operation, then because the material resistance is lowered, and air quantity increases relatively, makes it bed of material perforation, and bed temperature reduces and black fire.Therefore, in time arrange discharging bottom slags and be the method for the stable bed thickness of using always, and bed drain purge is to be determined by coal-supplying amount, fuel ash and end slag share.
Chinese patent ZL200920048096 discloses a kind of deslagging device of circulating fluidized bed boiler, comprise fluidized-bed slag, fluidized bed hood, water wall tube, expansion gear, next part case, described next part case, expansion gear, fluidized bed hood and water wall tube are connected to a whole water cooled wind chamber of forming, and described water wall tube is connected with the reducing scum pipe and through water cooled wind chamber; The lower end of described reducing scum pipe is provided with residual cake valve.This slag discharging device utilizes the bore of reducing scum pipe upper end to be able to smooth deslagging.
Chinese patent ZL 200820077161 discloses a kind of slag discharging device, be applied to graded gasification furnace, it comprises the lock hopper that is connected under the vapourizing furnace, below lock hopper, be provided with the deslagging trench, lower port at the deslagging trench is connected with underground slag bath, be provided with the operation vehicle frame above underground slag bath, the operation vehicle frame has grab bucket.Slag discharging device should be emitted on the slag unification in the underground slag bath and manage, and had replaced the deslagging design of a traditional stove to a little slag bath, had simplified the deslagging flow process.
Chinese patent ZL 200920259036 discloses a kind of biomass power generation circular fluid bed dreg removing system, comprise Residue extraction pipeline, ash gate, described Residue extraction pipeline deslagging inlet is arranged on the bottom of burner hearth, in the deslagging outlet described ash gate is set, described Residue extraction pipeline is the ladder type pipe, the deslagging inlet of Residue extraction pipeline is less than the deslagging outlet, and described deslagging inlet is higher than burner hearth bottom 5-10 centimetre.The fairly simple convenience of this dreg removing system scarfing cinder process.
Yet above-mentioned disclosed slag discharging device or system are in deslagging, and partial fume or reactant gases also leak via this slag discharging device or system, especially are applied in the biomass gasifying furnace, can cause the thermosteresis and the danger of certain degree.
Summary of the invention
At the shortcoming of prior art, the purpose of this utility model provides the airtight slag discharging device of a kind of biomass gasifying furnace, is preventing to keep stablizing unobstructed tapping process when flue gas or reactant gases from leaking via this slag discharging device.Another purpose of the present utility model provides a kind of biomass gasification reaction system that uses above-mentioned slag discharging device.
On the one hand, in order to realize above-mentioned goal of the invention, the utility model provides a kind of biomass gasifying furnace airtight slag discharging device, and it comprises rotating shaft and cylindrical shell, wherein, rotating shaft is installed in the cylindrical shell, is arranged with screw-blade in the rotating shaft, and an end of cylindrical shell is provided with slag inlet, the other end is provided with slag notch, cylindrical shell is obliquely installed, and its slag notch is higher than slag inlet, and the slag inlet of cylindrical shell exports to be connected with the waste of gasifying biomass furnace bottom and communicates.This inclined design of cylindrical shell is generally a pressure-fired system owing to use the biomass gasifying furnace of this airtight slag discharging device, so can play the effect of lock gas well.
Further, the screw-blade in the rotating shaft is divided into two portions, and this two-part screw-blade rotation direction is opposite and be separately positioned on the both sides of slag notch.When lime-ash when slag inlet enters cylindrical shell, the screw-blade of rotation is pushed forward to slag notch with lime-ash, in parallelly together lime-ash is clamp-oned slag notch with the opposite screw-blade of the rotation direction of slag notch opposite side, carries out efficiently and completely slagging tap.
Further, be provided with valve respectively, as rotary valve, ball valve, cylinder valve etc. at slag inlet and slag notch place.When the outside deslagging of slag discharging device, then the valve of slag notch is in open mode, and the valve of slag inlet is in closure state; And when biomass gasifying furnace such as fluidized bed gasification reactor during to the slag discharging device deslagging, then the valve of slag discharging device slag inlet is in closing condition, and slag notch is in open mode, further effective leaking of control furnace gas.
The airtight slag discharging device of biomass gasifying furnace also comprises a water tank, and slag notch is connected with this water tank and communicates.Form water seal at slag notch and further effectively control leaking of furnace gas, and simultaneously red-hot lime-ash is cooled off, guaranteed the safety of the equipment and the person.
Further, rotating shaft wherein one section slightly larger in diameter in the diameter of other parts, in the rotating shaft of inner barrel, cindery density can take place and change in the slightly larger in diameter place, to preventing that escaping of gas from playing a role, preferably, the rotating shaft of slightly larger in diameter part is between slag inlet and slag notch, near a side of slag notch.
On the other hand, in order to realize goal of the invention of the present utility model, the utility model also provides a kind of biomass gasification reaction system that adopts above-mentioned airtight slag discharging device.
Further, this biomass gasification reaction system comprises: the fluidized bed gasification reactor that is used to prepare biological fuel gas; The biomass material plenum system of reaction raw materials is provided for fluidized bed gasification reactor; Be arranged at outside the fluidized bed gasification reactor and the reaction product of fluidized bed gasification reactor is carried out tripping device more than the isolating two-stage, the above tripping device of this two-stage comprises first tripping device and second tripping device at least; And the gasifying medium plenum system that gasifying medium is provided for fluidized bed gasification reactor; Wherein, airtight slag discharging device is arranged at the lower end of fluidized bed gasification reactor.
Preferably, fluidized bed gasification reactor comprises first opening for feed and second opening for feed that is arranged at its central region, the gasifying medium inlet that is arranged at its bottom and waste outlet and the material outlet that is arranged at its upper area; First opening for feed of fluidized bed gasification reactor engages with the biomass material feedway, and the gasifying medium inlet of fluidized bed gasification reactor engages with the gasifying medium feedway; Airtight slag discharging device comprises rotating shaft and cylindrical shell, rotating shaft is installed in the cylindrical shell, be arranged with screw-blade in the rotating shaft, one end of cylindrical shell is provided with slag inlet, the other end is provided with slag notch, cylindrical shell is obliquely installed, and its slag notch is higher than slag inlet, and the slag inlet of cylindrical shell exports to be connected with the waste of fluidized bed gasification reactor bottom and communicates; First tripping device comprises the material inlet that is arranged at its upper area, the loop exit that is arranged at the material outlet of its central region and is arranged at its bottom; The material inlet of first tripping device engages with the material outlet of fluidized bed gasification reactor, and the loop exit of first tripping device engages with second opening for feed of fluidized bed gasification reactor by first e Foerderanlage; Second tripping device comprises gas outlet, the material inlet that is arranged at its upper area that is arranged at its top, the loop exit that is arranged at its bottom; The material inlet of second tripping device engages with the material outlet of described first tripping device, and the loop exit of second tripping device engages with second opening for feed of fluidized bed gasification reactor by second e Foerderanlage and first e Foerderanlage.
Further, the screw-blade in the rotating shaft of airtight slag discharging device is divided into two portions, and this two-part screw-blade rotation direction is opposite and be separately positioned on the both sides of slag notch; Wherein one section slightly larger in diameter is in the diameter of other parts in rotating shaft, and the rotating shaft of this slightly larger in diameter part is between slag inlet and slag notch, near a side of slag notch.
Compared with prior art, the airtight slag discharging device of biomass gasifying furnace of the present utility model utilizes the propulsive force of screw-blade that the lime-ash that falls is stably discharged, and its structure that is obliquely installed can prevent that flue gas or reactant gases from leaking via this slag discharging device.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the airtight slag discharging device of the utility model biomass gasifying furnace.
Fig. 2 is the structural representation of the utility model biomass gasification reaction system.
Embodiment
See also Fig. 1, Fig. 2, the airtight slag discharging device 102 of the biomass gasifying furnace of present embodiment comprises rotating shaft 71 and cylindrical shell 72, rotating shaft 71 is installed in the cylindrical shell 72, be arranged with screw-blade 73 in the rotating shaft 71, one end of cylindrical shell 72 is provided with slag inlet 74, the other end is provided with slag notch 75, screw-blade 73 in the rotating shaft 71 is divided into two portions, this two-part screw-blade rotation direction is opposite and be separately positioned on the both sides of slag notch 75, be provided with the rotary valve (not shown) respectively at slag inlet 74 and slag notch 75 places, cylindrical shell 72 is obliquely installed, its slag notch 75 is higher than slag inlet 74, the waste outlet of the slag inlet 74 of cylindrical shell 72 and biomass gasifying furnace (as fluidized-bed) bottom is connected and communicates, and slag notch 75 is connected with water tank 103 and communicates.Rotating shaft 71 wherein one section slightly larger in diameter in the diameter of other parts, the rotating shaft of this slightly larger in diameter part between slag inlet 74 and slag notch 75, a side of close slag notch 75.
See also Fig. 2, the biomass gasification reaction system of present embodiment comprises that fluidized bed gasification reactor such as fluidized-bed 1, first tripping device such as cyclonic separator 2, second tripping device such as cyclonic separator 3, wind send device such as gas blower 4, heat exchanger 5, surge bunker 61, working bin 62, stokehold pay-off such as worm conveyor 7, feed bin 8, horizontal conveying belt 91, high spud angle conveying belt 92, waste pipe 101, airtight slag discharging device 102, waste storage device 103, diffuse channel 111, portfire 112, water-sealed valve 12.Wherein, the top of feed bin 8 has opening for feed, and the bottom has discharge port; Horizontal conveying belt 91 is positioned at the bottom discharge mouth below of feed bin 8, and the initiating terminal of high spud angle conveying belt 92 engages with the end of horizontal conveying belt 91, and the end of high spud angle conveying belt 91 is positioned at its top feed mouth top of surge bunker 61.The top of surge bunker 61 has opening for feed, and the bottom of working bin 62 has discharge port; Surge bunker 61 and working bin 62 are arranged up and down, are connected by the cylinder valve between surge bunker 61 and the working bin 62 to communicate.The initiating terminal of stokehold pay-off such as worm conveyor 7 is positioned at the bottom discharge mouth below of working bin 62, and its terminal feeds first opening for feed of fluidized-bed 1.Fluidized-bed 1 middle part has first opening for feed and second opening for feed; Its bottom has gasifying medium inlet and waste (comprising lime-ash) outlet; Its top has material outlet.The waste outlet connects waste pipe 101, and waste pipe 101 exits are equipped with airtight slag discharging device 102.Airtight slag discharging device 102 is inclined upwardly, and promptly its slag notch is higher than its slag inlet.The slag notch connection of airtight slag discharging device 102 is equipped with the water tank 103 that is used to collect waste.The top of first tripping device such as cyclonic separator 2 has material inlet, and this material inlet links to each other by pipeline with the material outlet of fluidized-bed 1; Its middle part has material outlet; Its bottom has loop exit; This loop exit is by pipe connection one regenerant apparatus for temporary storage 21, and the outlet at bottom of regenerant apparatus for temporary storage 21 has first e Foerderanlage such as the worm conveyor that leads to fluidized-bed 1 second opening for feed outward.The top of second tripping device such as cyclonic separator 3 has material inlet; Its top has gas outlet, and gas outlet connects the combustion gas house steward; Its bottom has loop exit; Loop exit has second e Foerderanlage such as the worm conveyor that leads to regenerant apparatus for temporary storage 21 outward.Heat exchanger 5 comprises fuel gas inlet, gas outlet and gas inlet, air; Fuel gas inlet is connected gas pipeline respectively with gas outlet; Gas inlet is connected air line respectively with air.The gas outlet of second tripping device such as cyclonic separator 3 is provided with water-sealed valve 12, and water-sealed valve 12 is positioned at before the heat exchanger 5.Water-sealed valve 12 is provided with one and diffuses mouth, and this diffuses a mouthful connection diffuse channel 111, and the exit end of diffuse channel 111 is provided with portfire 112.Wind send device such as gas blower 4 to be connected in the gas inlet of heat exchanger 5 by air line, and the air of heat exchanger 5 is connected in the gasifying medium inlet of fluidized-bed 1 bottom, and the bottom of air from fluidized-bed 1 is blown into.The bottom of fluidized-bed 1 is equipped with a plurality of ventilator trunks, and the blast inlet of ventilator trunk communicates with the gas inlet of fluidized-bed 1, is covered with the blast cap of bamboo hat shape on the air outlet of ventilator trunk, is equipped with a plurality of apertures on the blast cap.
The working process of biomass gasification reaction system is as follows:
Biological particles enters surge bunker 61 from feed bin 8 through horizontal conveying belt 91 and high spud angle conveying belt 92, enters working bin 62 through surge bunker 61, enters fluidized-bed 1 through worm conveyor 7 then.Gas blower 4 is blown in fluidized-bed 1.Biological particles and air effect generate combustion gas and solid waste such as CO, H2 and CH4 in fluidized-bed 1.Solid waste enters water tank 103 through waste pipe 101 and airtight slag discharging device 102.
Combustion gas and not the biological particles of complete reaction enter cyclonic separator 2, combustion gas and lighter biological particles enter cyclonic separator 3 after separating, heavier biological particles returns fluidized-bed 1 by worm conveyor and continues to participate in reaction.
In cyclonic separator 3, combustion gas further separates with lighter biological particles, combustion gas enters gas pipeline, heat the air that is used to react by heat exchanger 5, combustion gas simultaneously is cooled, the combustion gas that is cooled is delivered to gas line and is used (if there is unnecessary combustion gas then to enter diffuse channel 111, in the lit-end of diffuse channel 111) for downstream unit.
Though the utility model discloses as above with preferred embodiment, be not in order to limit the scope that the utility model is implemented.Any those of ordinary skill in the art, in not breaking away from invention scope of the present utility model, when doing a little improvement, promptly every equal improvement of doing according to the utility model should be invention scope of the present utility model and contains.
Claims (9)
1. airtight slag discharging device that is used for biomass gasifying furnace, it comprises rotating shaft and cylindrical shell, it is characterized in that, rotating shaft is installed in the cylindrical shell, is arranged with screw-blade in the rotating shaft, and an end of cylindrical shell is provided with slag inlet, the other end is provided with slag notch, cylindrical shell is obliquely installed, and its slag notch is higher than slag inlet, and the slag inlet of cylindrical shell exports to be connected with the waste of gasifying biomass furnace bottom and communicates.
2. airtight slag discharging device as claimed in claim 1 is characterized in that the screw-blade in the described rotating shaft is divided into two portions, and this two-part screw-blade rotation direction is opposite and be separately positioned on the both sides of described slag notch.
3. airtight slag discharging device as claimed in claim 1 is characterized in that, is provided with valve respectively at described slag inlet and slag notch place.
4. airtight slag discharging device as claimed in claim 1 is characterized in that, the airtight slag discharging device of described biomass gasifying furnace also comprises a water tank, and described slag notch is connected with this water tank and communicates.
5. airtight slag discharging device as claimed in claim 1 is characterized in that, described rotating shaft wherein one section slightly larger in diameter in the diameter of other parts.
6. airtight slag discharging device as claimed in claim 5 is characterized in that, the rotating shaft of described slightly larger in diameter part is between described slag inlet and slag notch, near a side of slag notch.
7. the biomass gasification reaction system of the described airtight slag discharging device of one of an employing such as claim 1-6.
8. biomass gasification reaction as claimed in claim 7 system is characterized in that this biomass gasification reaction system comprises:
Be used to prepare the fluidized bed gasification reactor of biological fuel gas;
The biomass material plenum system of reaction raw materials is provided for described fluidized bed gasification reactor;
Be arranged at outside the described fluidized bed gasification reactor and the reaction product of described fluidized bed gasification reactor is carried out tripping device more than the isolating two-stage, the above tripping device of this two-stage comprises first tripping device and second tripping device at least; And
The gasifying medium plenum system of gasifying medium is provided for described fluidized bed gasification reactor;
Wherein, described airtight slag discharging device is arranged at the lower end of described fluidized bed gasification reactor.
9. biomass gasification reaction as claimed in claim 8 system, it is characterized in that described fluidized bed gasification reactor comprises first opening for feed and second opening for feed that is arranged at its central region, the gasifying medium inlet that is arranged at its bottom and waste outlet and the material outlet that is arranged at its upper area; First opening for feed of described fluidized bed gasification reactor engages with described biomass material feedway, and the gasifying medium inlet of described fluidized bed gasification reactor engages with described gasifying medium feedway;
Described first tripping device comprises the material inlet that is arranged at its upper area, the loop exit that is arranged at the material outlet of its central region and is arranged at its bottom; The material inlet of described first tripping device engages with the material outlet of described fluidized bed gasification reactor, and the loop exit of described first tripping device engages with second opening for feed of described fluidized bed gasification reactor by first e Foerderanlage;
Described second tripping device comprises gas outlet, the material inlet that is arranged at its upper area that is arranged at its top, the loop exit that is arranged at its bottom; The material inlet of described second tripping device engages with the material outlet of described first tripping device, and the loop exit of described second tripping device engages with second opening for feed of described fluidized bed gasification reactor by second e Foerderanlage and first e Foerderanlage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205871805U CN201857373U (en) | 2010-11-01 | 2010-11-01 | Closed slag discharging device for biomass gasifying furnace and biomass gasification reaction system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010205871805U CN201857373U (en) | 2010-11-01 | 2010-11-01 | Closed slag discharging device for biomass gasifying furnace and biomass gasification reaction system |
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| CN201857373U true CN201857373U (en) | 2011-06-08 |
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| CN2010205871805U Expired - Fee Related CN201857373U (en) | 2010-11-01 | 2010-11-01 | Closed slag discharging device for biomass gasifying furnace and biomass gasification reaction system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967401A (en) * | 2010-11-01 | 2011-02-09 | 广州迪森热能技术股份有限公司 | Closed slag-discharging device for biomass gasifier and biomass gasification reaction system |
| WO2012059019A1 (en) * | 2010-11-01 | 2012-05-10 | 广州迪森热能技术股份有限公司 | Biomass gasification complete apparatus and system thereof |
-
2010
- 2010-11-01 CN CN2010205871805U patent/CN201857373U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101967401A (en) * | 2010-11-01 | 2011-02-09 | 广州迪森热能技术股份有限公司 | Closed slag-discharging device for biomass gasifier and biomass gasification reaction system |
| WO2012059019A1 (en) * | 2010-11-01 | 2012-05-10 | 广州迪森热能技术股份有限公司 | Biomass gasification complete apparatus and system thereof |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20191101 |