CN201857375U - Air curtain feeding device and biomass gasification reaction system using same - Google Patents
Air curtain feeding device and biomass gasification reaction system using same Download PDFInfo
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- CN201857375U CN201857375U CN2010205874926U CN201020587492U CN201857375U CN 201857375 U CN201857375 U CN 201857375U CN 2010205874926 U CN2010205874926 U CN 2010205874926U CN 201020587492 U CN201020587492 U CN 201020587492U CN 201857375 U CN201857375 U CN 201857375U
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- opening
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
- Y02P20/145—Feedstock the feedstock being materials of biological origin
Abstract
The utility model discloses an air curtain feeding device. The air curtain feeding device comprises a driving device, wherein the driving device is connected with a rotating shaft in a driving manner, a helical blade is sheathed on the rotating shaft, a feed pipe is sheathed at the periphery of the helical blade, and the feed pipe is provided with a feed opening and a discharge opening; and an air hole zone provided with a plurality of air holes is arranged between the feed opening and the discharge opening, and a seal cover is arranged outside the air hole zone of the feed pipe in a sheathing manner and provided with an air inlet communicated with an air outlet of an air feeder. The air curtain feeding device prevents gas generated by a fluidized bed gasification reactor from leaking into the air and a stokehold storage device through the feeding device, avoids dangers, such as spontaneous combustion, explosion, human intoxication, and the like caused by gas leakage, and can blow broken sawdust (unformed) which can not be transferred through helical blade conveying into the discharge opening with the assistance of air curtain feeding mode, thus well solving the problems of reducing of service life of equipment, blocking of the entire feeding device, and the like caused due to the long-term backlogging and scaling of the broken sawdust.
Description
Technical field
The utility model relates to a kind of air curtain feeding unit, and the biomass gasification reaction system that uses this air curtain feeding unit.
Background technology
The history in existing more than 100 year of gasifying biomass.Initial gasifying reactor results from 1883, and it is a raw material with the charcoal, the gas driven oil engine after the gasification.During World War II, Germany has greatly developed the vehicle-mounted gasifier that is used for motor vehicles for civilian use, and has formed the complete skill with matching with automobile engine.Gasifying biomass at that time mainly adopts the fixed bed gasification reactor, and its state of the art has reached quite perfect degree.
Gasifying biomass is meant after the biomass material processing treatment, sends in the vapourizing furnace, carries out gasification cracking under the anoxybiotic condition, obtains inflammable gas, thereby also will obtain fine product gas through the row purifying treatment to output gas according to application need sometimes.
The gasifying biomass principle is under certain thermodynamic condition, effect by means of gasifying medium such as air, oxygen or water vapour etc., make superpolymer generation pyrolysis, oxidation, reduction, the reforming reaction of biomass, further thermally splitting of the tar of pyrolysis association or catalytic cracking become the small molecules hydrocarbon polymer, obtain inflammable gass such as CO, H2 and CH4.Gasifying biomass mainly comprises gasification reaction, synthetic gas catalytic shift and gas isolation of purified process (directly use without isolation of purified).With the air is that gasifying medium is an example, and gasifying biomass chemical reaction general formula can be expressed as:
CH
1.4O
0.6+0.4O
2+1.5N
2＝0.7CO+0.3CO
2+0.6H
2+0.1H
2O+(1.5N
2)
Generally speaking, biomass are made up of Mierocrystalline cellulose, hemicellulose, xylogen, inert ash etc., oxygen level and fugitive constituent height, and the reactivity of coke is strong, so biomass and coal facies ratio, has higher gasification reactivity, is more suitable for gasification.
From the angle of the vapourizing furnace that adopted, biomass gasification technology can be divided into two big classes, and a class is the fixed-bed gasification furnace technology, and a class is the fluidized-bed gasification furnace technology.Wherein, fixed-bed gasification furnace can be divided into updraft type fixed-bed gasification furnace, downdraft fixed-bed gasification furnace, crossdraft fixed-bed gasification furnace and happy formula fixed-bed gasification furnace etc. again; Fluidized-bed gasification furnace can be divided into fluidized-bed gasification furnace, double-fluidized-bed vapourizing furnace and circle fluidized-bed gasification furnace etc. again.
No matter adopt which kind of vapourizing furnace, all need feeding unit to send the biomass material in the storage device of stokehold to vapourizing furnace and react, and then produce combustion gas.Because the pressure in the vapourizing furnace is higher than the pressure in feeding unit and the stokehold storage device, the combustion gas meeting that vapourizing furnace produces is leaked in the air by feeding unit against the charging route and enters the stokehold storage device.Combustion gas is leaked in the air, and accidents such as spontaneous combustion, blast, personnel's poisoning can take place; If in stokehold storage device implode, lose even more serious.
Except the problems referred to above, also there are the following problems for present employed vapourizing furnace:
(1) the vapourizing furnace gasification efficiency is low.Biomass material can not be gasified well, and capacity usage ratio is low, and energy dissipation is more serious, easily makes vapourizing furnace dust stratification and slagging scorification more;
(2) combustion gas thermal value is on the low side.Lower thermal value not only causes the gas storage cost to raise, and causes the each household gas consumption to raise, and has increased user's expenditure, has limited the enthusiasm of user's usefulness gas;
(3) foreign matter content height.Tar and dust deposit are serious, and central gas supply system can not carry out the long-term safety operation.Not only influenced the continuity of producing, and caused in the factory building and scurry on the flame, pipeline forms negative pressure back draft;
(4) secondary pollution problem.Top, market gasifying biomass unit adopts the wet purification technology, discharges washed water coolant to the external world so inevitably, causes containing in the water coolant multiple harmful substances, as phenol, ammonia etc.They constitute harm to animal and plant growth and safety, thereby cause secondary pollution.
Summary of the invention
One of the purpose of this utility model provides a kind of air curtain feeding unit, reveals from feeding unit with the combustion gas that stops vapourizing furnace to produce; Another purpose of the present utility model provides a kind of biomass gasification reaction system that uses above-mentioned air curtain feeding unit, to reach the purpose that stops combustion gas to reveal, improve simultaneously gasification efficiency and combustion gas thermal value.
To achieve these goals, the utility model provides a kind of air curtain feeding unit that is used for the biomass gasification reaction system, it comprises drive unit, this drive unit drives and connects turning axle, be socketed with screw-blade on the turning axle, the peripheral sheathed feed-pipe of screw-blade, feed-pipe has opening for feed and discharge port; Pore district with a plurality of pores is set between opening for feed and the discharge port, is with seal closure outside the pore district of feed-pipe, seal closure has blast inlet, and blast inlet is communicated with the air outlet of air-supply arrangement.
Wherein, drive unit (comprising motor and deceleration device), turning axle, screw-blade, feed-pipe can be formed helix transporting device.Air-supply arrangement can be gas blower, be used in seal closure, carrying air, the air that wind send device to carry further enters helix transporting device by the pore in feed-pipe pore district, form one air curtain in helix transporting device, the combustion gas that stops fluidized bed gasification reactor to produce is revealed from helix transporting device.
In feeding unit, more near fluidized bed gasification reactor, the pressure that combustion gas produces is big more.In order to make air curtain can stop combustion gas effectively, air curtain should not be too near apart from fluidized bed gasification reactor.Preferably, in air curtain feeding unit of the present utility model, the pore district is positioned at about 1/3 of distance between the opening for feed of feed-pipe and the discharge port and locates, and away from discharge port.
Further, in air curtain feeding unit of the present utility model, for the resistance that air curtain is produced do not disperse, enough big, the pore of generation air curtain is circumferentially arranged along feed-pipe, promptly the track of gas cell distribution is a circle on the feed-pipe.Pore in the pore district can have a row or multi-row, and the round track of a plurality of gas cell distribution is arranged in promptly in the pore district.When in the pore district venting hole being arranged, the number of pore is preferably 2-16, for example 8.When in the pore district two venting holes being arranged, the number of pore is preferably every row 2-8, and for example 4, and two venting holes are staggered.
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 uses above-mentioned air curtain feeding unit.This biomass gasification reaction system can comprise:
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 fluidized bed gasification reactor; And
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;
The gasifying medium plenum system of gasifying medium is provided for fluidized bed gasification reactor; Wherein, adopted above-mentioned air curtain feeding unit in the biomass material plenum system.For example, the opening for feed of the feed-pipe of air curtain feeding unit can be positioned at the discharge port below of stokehold storage device, and the discharge port of feed-pipe is connected in the opening for feed of fluidized bed gasification reactor.
Preferably, in biomass gasification reaction of the present utility model system, 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; Wherein, first opening for feed of fluidized bed gasification reactor engages with the biomass material plenum system, and the gasifying medium inlet of fluidized bed gasification reactor engages with the gasifying medium plenum system; 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; Wherein, 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; And second tripping device comprise the gas outlet, the material inlet that is arranged at its upper area that are arranged at its top, be arranged at the loop exit of its bottom; Wherein, the material inlet of second tripping device engages with the material outlet of 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.
In biomass gasification reaction of the present utility model system, biomass material such as granular biomass material react at fluidized bed gasification reactor and gasifying medium, complicated serial reaction such as pyrolysis, oxidation, reduction, reformation takes place in the polymkeric substance of biomass such as Mierocrystalline cellulose etc., obtains CO, H
2And CH
4Deng combustion gas, wherein, further thermally splitting of the tar of pyrolysis association or catalytic cracking become the small molecules hydrocarbon polymer.
Fluidized bed gasification reactor can be a vapourizing furnace, for example can be the gasification tower of tower shape; Gasifying medium can air, it also can be the gasifying medium that in air, has added other composition, or the gasifying medium that each composition in the air has been carried out adjusting, for example, according to different biomass materials, occasion and purpose, can suitably increase or reduce the content of oxygen, nitrogen, water vapour and carbonic acid gas, with the composition of control transformation efficiency, productive rate and product such as combustion gas.
In biomass gasification reaction of the present utility model system, the gasifying medium plenum system can comprise that wind send device, as gas blower, wind send device by the gasifying medium inlet of pipe connection in the fluidized bed gasification reactor bottom, and the bottom of gasifying medium from fluidized bed gasification reactor is blown into.
In biomass gasification reaction of the present utility model system, may further include heat exchanger, wherein, from the combustion gas of the second tripping device gas outlet with from the gasifying medium of gasifying medium plenum system this heat exchanger of flowing through, and generation heat exchange, gasifying medium is preheated, and combustion gas is cooled; Afterwards, the gasifying medium that is preheated then via the gasifying medium inlet of fluidized bed gasification reactor, is sent into fluidized bed gasification reactor, and the downstream unit of biomass gasification reaction system is then delivered in the combustion gas that is cooled.This design can make product such as the combustion gas of leaving reactive system lower the temperature on the one hand, so that it further is utilized; On the other hand, can utilize high-temperature fuel gas preheating gasifying medium, make the gasifying medium that enters fluidized bed gasification reactor reach certain temperature, the reacting balance of being convenient in the fluidized bed gasification reactor carries out, and fully reclaims the entrained heat of product.
In biomass gasification reaction of the present utility model system, its biomass material plenum system can comprise stokehold storage device and stokehold pay-off; Wherein, the stokehold storage device comprises surge bunker and working bin, and surge bunker and working bin comprise opening for feed and discharge port respectively, and the opening for feed of working bin engages with the discharge port of surge bunker; The stokehold pay-off will be sent into first opening for feed of fluidized bed gasification reactor from the raw material of working bin discharge port.
For example, the stokehold storage device can be a kind of air curtain charging dress journey, and the opening for feed of its feed-pipe is positioned at the discharge port below of stokehold storage device, and the discharge port of feed-pipe is connected in the opening for feed of fluidized bed gasification reactor; Above-mentioned air curtain feeding unit is transported to the biomass material in the storage device of stokehold in the fluidized bed gasification reactor and reacts.
For example, above-mentioned surge bunker and working bin can be arranged up and down, and its top feed mouth of working bin is positioned at the below of the bottom discharge mouth of surge bunker; The feed end of stokehold pay-off is positioned at the bottom discharge mouth below of working bin, and its discharge end feeds first opening for feed of fluidized bed gasification reactor.
Have biomass material such as biological particles shape raw material in the surge bunker, during work, biological particles temporary in the surge bunker is introduced into working bin, falls into the stokehold pay-off by working bin.This design can prevent that the reactant gases of heat in reactive system such as the fluidized bed gasification reactor from being leaked by working bin.Because reactant gases comprises CO, H
2And CH
4Etc. inflammable, explosive composition, what it leaked is dangerous self-evident.Preferably, bottom discharge mouth place at surge bunker and working bin is equipped with valve, as rotary valve, ball valve, cylinder valve etc., and these rotary valves play a kind of effect of air-lock device, for example, when working bin in fluidized bed gasification reactor during feed, then the rotary valve of working bin is in open mode, and the rotary valve of surge bunker is in closure state; And when surge bunker when working bin is reinforced, then the rotary valve of working bin is in closing condition, and the rotary valve of surge bunker is in open mode.Such design can solve well and prevent the problem that reactant gases leaks when feeding in raw material in reactive system.Further, surge bunker can be a plurality of, for example, a plurality of parallel surge bunkers can be arranged, and each all directly links to each other with working bin, but its rotary valve opens successively, and such design can adapt to the reactive system of continuously feeding; Perhaps, a plurality of surge bunkers are to be connected in series, and wherein, have only a surge bunker near working bin directly to be connected with working bin, and such design is a kind of multistage air-lock device, further reduces the possibility that reactant gases leaks; Certainly, the design of a plurality of surge bunkers also can be both to have comprised parallel connection, also comprises being connected in series.
Preferably, in biomass gasification reaction of the present utility model system, first e Foerderanlage, second e Foerderanlage and/or stokehold pay-off are helix transporting device.
Further, also comprise feed bin and pay-off in biomass gasification reaction of the present utility model system, wherein, feed bin comprises its top feed mouth and bottom discharge mouth, and pay-off comprises horizontal conveying belt and high spud angle conveying belt; Horizontal conveying belt is positioned at the bottom discharge mouth below of feed bin, and the initiating terminal of high spud angle conveying belt engages with the horizontal feed end of tape, and the end of high spud angle conveying belt is positioned at its top feed mouth top of surge bunker.Biological particles shape raw material enters feed bin from the opening for feed at feed bin top, falls on the horizontal conveying belt from the discharge port of feed bin bottom, goes to the high spud angle conveying belt by horizontal conveying belt again, finally finishes to surge bunker reinforced by the high spud angle conveying belt.
Because fluidized bed gasification reactor can produce some solid waste, if untimely eliminating can influence normally carrying out of gasification reaction.Thereby biomass reactive system of the present utility model can also comprise slag discharging device, and this slag discharging device can be a helix transporting device, and the discharge end of this helix transporting device is higher than its feed end, leaks via this slag discharging device to prevent reactant gases.Because gasification system of the present utility model is a pressure-fired system, this inclined design can play the effect of lock gas well.Further, can be equipped with valve in the waste exit of fluidized bed gasification reactor bottom and the discharge end of slag discharging device, as rotary valve, ball valve, cylinder valve etc., and these rotary valves play a kind of effect of air-lock device, for example, when the outside deslagging of slag discharging device, then the rotary valve of slag discharging device discharge end is in open mode, and the rotary valve of the waste outlet of fluidized bed gasification reactor bottom is in closure state; And when fluidized-bed gasification was reacted to the slag discharging device deslagging, then the rotary valve of slag discharging device discharge end was in closing condition, and the rotary valve of the waste outlet of fluidized bed gasification reactor bottom is in open mode.
Further preferably, the slag discharging device discharge end is provided with the water receptacle that water is housed, so that form water seal at the slag discharging device discharge end.
In order to increase the fluid effect of biological particles, be equipped with a plurality of ventilator trunks in the bottom of fluidized bed gasification reactor, the blast inlet of ventilator trunk communicates with the gasifying medium of fluidized bed gasification reactor inlet, be covered with the blast cap of bamboo hat shape on the air outlet of ventilator trunk, be equipped with a plurality of apertures on the blast cap, be used to spray air and avoid the air outlet of ventilator trunk to be stopped up simultaneously by biological particles.
Compared with prior art, the utility model is offered pore, seal closure and wind and is sent device on feeding unit, in feeding unit, form air curtain, the combustion gas that has stoped fluidized bed gasification reactor to produce is leaked in air and the stokehold storage device by feeding unit, equipment, raw material and staff's safety has been protected in danger such as the spontaneous combustion of having avoided combustion gas to reveal causing, blast, personnel poisoning; By multi-stage separation device is set, biological particles can fully be reacted, improved gasification efficiency, saved the energy, produced more combustion gas, improved the combustion gas thermal value; Because the biological particles sufficient reacting has reduced the generation of tar and dust, the potential safety hazard of having avoided tar and dust to form in fluidized bed gasification reactor has reduced the problem of environmental pollution that processing tar and dust bring simultaneously; Simultaneously, can will carry the broken wood chip (not moulding) that can't transmit by screw-blade, be aided with the air curtain feeding manner mode that this partial crushing wood chip changes by air curtain is blown into discharge port, thereby well solve broken wood chip owing to long-term overstock fouling, reduce service life of equipment even stop up problem such as whole feeding unit.
Below in conjunction with drawings and Examples; further specify the utility model; but the utility model is not limited to these embodiment, any on the utility model essence spirit improvement or substitute, still belong to scope required for protection in the utility model claims.
Description of drawings
Fig. 1 is the structural representation of the utility model air curtain feeding unit specific embodiment;
Fig. 2 is the structural representation of the utility model biomass gasification reaction system specific embodiment.
Embodiment
The specific embodiment of the utility model air curtain feeding unit is applied to the biomass gasification reaction system.The biomass gasification reaction system comprises biomass material plenum system and fluidized bed gasification reactor, and the biomass material plenum system comprises stokehold storage device and stokehold pay-off again.The stokehold storage device has discharge port, and fluidized bed gasification reactor has opening for feed, and the stokehold pay-off is connected between the two, is used for the biomass material of stokehold storage device is delivered in the fluidized bed gasification reactor.Air curtain feeding unit of the present utility model promptly belongs to the stokehold pay-off.
As shown in Figure 1, the specific embodiment of the utility model air curtain feeding unit comprises: motor, deceleration device, turning axle, screw-blade, feed-pipe, seal closure 71, wind send device such as gas blower 72.
Wherein, motor connects deceleration device, and the two drives the turning axle rotation, and permanent sleeve is connected to screw-blade on the turning axle, is with feed-pipe outside the screw-blade, and feed-pipe is provided with opening for feed and discharge port.The discharge port that the opening for feed of feed-pipe is positioned at the discharge port below feed-pipe of stokehold storage device is connected in the opening for feed of fluidized bed gasification reactor; Have the pore district between the opening for feed of feed-pipe and the discharge port, the pore district is positioned at 1/3 place of distance between the opening for feed of feed-pipe and the discharge port, and away from discharge port.Have a row totally 8 pores 73 in the pore district, this 8 pores 73 are circumferentially arranged along feed-pipe, and its distribution track is a circle.The feed-pipe pore is with seal closure 71 outside the district, and seal closure 71 seals with the joint portion of feed-pipe, has a blast inlet on the seal closure 71.Blast inlet connects wind and send device such as gas blower 72.
As shown in Figure 2, the specific embodiment of the utility model biomass gasification reaction system comprises: 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, gasifying medium plenum system, heat exchanger 5, biomass material plenum system, feed bin 8, horizontal conveying belt 91, high spud angle conveying belt 92, waste pipe 101, slag discharging device such as worm conveyor 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 biomass material plenum system comprises surge bunker 61, working bin 62, air curtain feeding unit 7.The top of surge bunker 61 has opening for feed, and the bottom has discharge port; The top of working bin 62 has opening for feed, and the bottom has discharge port; Surge bunker 61 and working bin 62 are arranged up and down, and its top feed mouth of working bin 62 is positioned at the below of the bottom discharge mouth of surge bunker 61; The bottom discharge mouth place of surge bunker 61 is provided with rotary valve.The initiating terminal of air curtain feeding unit 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 outlet; Its top has material outlet.The waste outlet connects waste pipe 101, and waste pipe 101 exits are equipped with slag discharging device such as worm conveyor 102.Worm conveyor 102 is inclined upwardly, and promptly its discharge end is higher than its feed end.The discharge end of worm conveyor 102 is equipped with waste storage device 103.
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 gas pipeline; 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.
In the present embodiment, the gasifying medium plenum system send device (as gas blower 4) and corresponding pipeline for the wind that links to each other with heat exchanger 5; Certainly, can adopt the gasifying medium plenum system of other form in other embodiments fully.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.As shown in Figures 2 and 3, 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 present embodiment 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 air curtain feeding unit 7 then.Gas blower 4 is blown in fluidized-bed 1.Biological particles and air effect generate CO, H in fluidized-bed 1
2And CH
4Deng combustion gas and solid waste.Solid waste enters waste storage device 103 through waste pipe 101 and worm conveyor 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, and combustion gas enters gas pipeline, heats the air that is used to react by heat exchanger 5, combustion gas simultaneously is cooled, and the downstream unit of biomass gasification reaction system is delivered in the combustion gas that is cooled.Unnecessary combustion gas enters diffuse channel 111, in the lit-end of diffuse channel 111.
Claims (10)
1. air curtain feeding unit that is used for the biomass gasification reaction system, it comprises drive unit, it is characterized in that, this drive unit drives and connects turning axle, be socketed with screw-blade on the described turning axle, the peripheral sheathed feed-pipe of described screw-blade, described feed-pipe has opening for feed and discharge port; Pore district with a plurality of pores is set between described opening for feed and the discharge port, is with seal closure outside the pore district of described feed-pipe, described seal closure has blast inlet, and described blast inlet is communicated with the air outlet of air-supply arrangement.
2. air curtain feeding unit as claimed in claim 1 is characterized in that, described pore district is positioned at 1/3 place of distance between the opening for feed of described feed-pipe and the discharge port, and away from discharge port.
3. air curtain feeding unit as claimed in claim 1 is characterized in that described pore is circumferentially arranged along described feed-pipe.
4. air curtain feeding unit as claimed in claim 3 is characterized in that, described pore has a row or multi-row pore in the district.
5. air curtain feeding unit as claimed in claim 1 is characterized in that, and is described when in the described pore district venting hole being arranged, and the number of pore is 2-16.
6. the biomass gasification reaction system of the described air curtain feeding unit of one of an employing such as claim 1-5.
7. biomass gasification reaction as claimed in claim 6 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, adopted described air curtain feeding unit in the described biomass material plenum system.
8. biomass gasification reaction as claimed in claim 7 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; Wherein, first opening for feed of described fluidized bed gasification reactor engages with described biomass material plenum system, and the gasifying medium inlet of described fluidized bed gasification reactor engages with described gasifying medium plenum system;
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; Wherein, 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; And
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; Wherein, 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.
9. biomass gasification reaction as claimed in claim 7 system is characterized in that described biomass material plenum system comprises stokehold storage device and stokehold pay-off; Wherein, described stokehold storage device comprises surge bunker and working bin, and described surge bunker and described working bin comprise opening for feed and discharge port respectively, and the opening for feed of described working bin engages with the discharge port of described surge bunker; Described stokehold pay-off will be sent into first opening for feed of described fluidized bed gasification reactor from the raw material of described working bin discharge port; The bottom discharge mouth place of described surge bunker and working bin is equipped with rotary valve; Wherein, described stokehold pay-off is a kind of air curtain feeding unit.
10. biomass gasification reaction as claimed in claim 7 system, it is characterized in that, described biomass gasification reaction system further comprises slag discharging device, and this slag discharging device is a helix transporting device, and the discharge end of this helix transporting device is higher than its feed end.
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| CN2010205874926U CN201857375U (en) | 2010-11-01 | 2010-11-01 | Air curtain feeding device and biomass gasification reaction system using same |
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| CN2010205874926U CN201857375U (en) | 2010-11-01 | 2010-11-01 | Air curtain feeding device and biomass gasification reaction system using same |
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| CN (1) | CN201857375U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041102A (en) * | 2010-11-01 | 2011-05-04 | 广州迪森热能技术股份有限公司 | Air curtain feeding device and biomass gasification reaction system using same |
| 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
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102041102A (en) * | 2010-11-01 | 2011-05-04 | 广州迪森热能技术股份有限公司 | Air curtain feeding device and biomass gasification reaction system using same |
| 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 |
| CN102041102B (en) * | 2010-11-01 | 2013-08-07 | 广州迪森热能技术股份有限公司 | Air curtain feeding device and biomass gasification reaction system using same |
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