CN201923987U - Biomass fuel gas water seal device and biomass gasification reaction system employing same - Google Patents
Biomass fuel gas water seal device and biomass gasification reaction system employing same Download PDFInfo
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- CN201923987U CN201923987U CN2010205871398U CN201020587139U CN201923987U CN 201923987 U CN201923987 U CN 201923987U CN 2010205871398 U CN2010205871398 U CN 2010205871398U CN 201020587139 U CN201020587139 U CN 201020587139U CN 201923987 U CN201923987 U CN 201923987U
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Abstract
The utility model discloses a biomass fuel gas water seal device which comprises a first water container, a shell, a first bell housing, a second water container, a pull rod and a second bell housing, wherein a through hole is machined at the bottom of the first water container; the shell covers the upper part of the first water container and the lower part of the shell is provided with a plurality of water holes; a fuel gas outlet is arranged on the shell and the top part of the shell is provided with a through hole for the pull rod to pass through; the outlet end of a fuel gas pipeline is positioned in the space enclosed by the first water container and the shell, and is higher than the water level inside the first water container; the first bell housing is arranged in the shell and covers the outlet end of the fuel gas pipeline, and the bottom end of the first bell housing is arranged below the water level inside the first water container; the second water container is arranged on the top of the shell and is provided with a through hole at the bottom, a pipeline is arranged at the through hole and the through hole coincides with the through hole on the top of the shell; the bottom end of the pull rod is connected with the top part of the first bell housing and extends out of the through hole on the top of the shell; and the second bell housing is connected with the pull rod and covers the top end of a pipeline of the second water container, and the bottom end of the second bell housing is arranged below the water level inside the second water container. When the biomass fuel gas water seal device is used, the problems of explosion and leakage caused by unstable pressure of fuel gas and unstable yield of fuel gas are well solved; and the biomass fuel gas water seal device is the most efficient saf0e and support system for the biomass gasification reaction system.
Description
Technical field
The utility model relates to a kind of biomass combustible gas water seal arrangement, and the biomass gasification reaction system that uses this biomass combustible gas water seal arrangement.
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, its purpose all is to carry out biomass gasification reaction, and then produces combustion gas.These combustion gas are delivered to the downstream user place by gas pipeline.The at present common valve that is used for gas pipeline or reveal combustion gas easily, and then cause security incidents such as blast, personnel's poisoning; The resistance of perhaps opening or closing is big, and switch speed is slow, influences working efficiency.
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 biomass combustible gas water seal arrangement, reaches to prevent the combustion gas leakage, can switch fast again; Another purpose of the present utility model provides a kind of biomass gasification reaction system that uses above-mentioned biomass combustible gas water seal arrangement, to reach the Peril Incident while of avoiding combustion gas to cause, improve gasification efficiency and combustion gas thermal value, reduce the generation of impurity such as tar and dust, reduce secondary pollution.
To achieve these goals, the utility model provides a kind of biomass combustible gas water seal arrangement that is used for the biomass gasification reaction system, the gas pipeline that this biomass gasification reaction system comprises fluidized bed gasification reactor and is connected in fluidized bed gasification reactor; This water seal arrangement comprises:
First water receptacle, its bottom has a through hole, and gas pipeline passes from this through hole, and the through hole of its bottom and the sealing of the joint portion of gas pipeline are to avoid gas leaking;
Shell, it covers in the first water receptacle top, and its underpart is equipped with a plurality of limbers; Which is provided with gas outlet, its top is provided with the through hole that passes for pull bar; The exit end of gas pipeline is positioned at the space of first water receptacle and shell encirclement, and is higher than the water surface in first water receptacle;
First bell jar, it is positioned within the shell, covers on the exit end of gas pipeline, and its bottom is positioned at below the water surface of first water receptacle;
Second water receptacle is positioned at the top of shell, and its bottom has a through hole, and this through hole is provided with pipeline, and this through hole overlaps with the through hole of cover top portion;
Pull bar, the pull bar bottom is connected in the top of first bell jar, and passes from the through hole of cover top portion;
Second bell jar, it is connected in pull bar, and covers on the top of the second water receptacle pipeline, and its bottom is positioned at below the water surface of second water receptacle.
When gasification reaction carries out, ceaselessly water filling in first water receptacle.When not needing gas supply, pull bar falls, and drives first bell jar and falls, and covers on the exit end of gas pipeline, and this moment, the bottom of first bell jar was positioned at below the water surface, and the combustion gas in the gas pipeline is just lived by the water seal in first bell jar and first water receptacle; When the needs gas supply, the pull bar pull-up covers on first bell jar of the exit end of gas pipeline, and combustion gas just can be passed through from the gas outlet on the shell.Water level in second water receptacle is darker, and second bell jar is longer simultaneously, no matter pull bar pull-up or fall, and the bottom of second bell jar is positioned at below the water surface of second water receptacle all the time.
The ash owing to can fall in first water receptacle of long duration can stop up the limbers of outer casing underpart, and then makes the water in first water receptacle enter gas pipeline.For fear of the generation of this situation, be provided for injecting high pressure water high-pressure water inlet that purges and the high pressure water outlet that is used for blowdown in the first water receptacle lower sidewall.High pressure water injects from high-pressure water inlet, and the ash that falls in first water receptacle is discharged from the high pressure water outlet, has realized the cleaning in first water receptacle.
Water level in first water receptacle is too high, and the water of being convenient to simultaneously in first water receptacle is recycled, and is equipped with overflow weir in the first water receptacle side wall upper part.Based on same reason, also be equipped with overflow weir in the second water receptacle side wall upper part.
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 biomass combustible gas water seal arrangement.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, the gas outlet of second tripping device is provided with above-mentioned water-sealed valve
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, 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 because first bell jar that uses pull bar to connect is controlled the switch of combustion gas, and the resistance of opening or closing is little, and switch speed is fast, high efficiency; Simultaneously be provided with second water receptacle and second bell jar in the vertical through hole of water seal arrangement shell, promptly be provided with a secondary water seal arrangement again, avoided combustion gas to be leaked to danger such as the blast that causes the air and personnel poisoning from this through hole in the through hole that pull bar passes; 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.
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 biomass combustible gas water seal arrangement specific embodiment;
Fig. 2 is the structural representation of the utility model biomass gasification reaction system specific embodiment.
Embodiment
As shown in Figure 1, the specific embodiment of the utility model biomass combustible gas water seal arrangement comprises: first water receptacle 123, shell 121, first bell jar 122, pull bar 124, second water receptacle 131, second bell jar 132.
Wherein, fill water in first water receptacle 123, first water receptacle, 123 side wall upper part are equipped with overflow weir 127, the first water receptacles 123 lower sidewall high-pressure water inlet 125 and high pressure water outlet 126 are set; First water receptacle, 123 bottoms have a through hole, and gas pipeline passes from this through hole, the through hole of first water receptacle, 123 bottoms and the sealing of the joint portion of gas pipeline; Shell 121 covers in first water receptacle, 123 tops, and shell 121 bottoms are equipped with a plurality of limbers; 121 are provided with gas outlet 128 on the shell; Gas pipeline is provided with vertical diffuse channel 111.
Shell 121 tops are provided with a through hole that supplies pull bar 124 to pass; The exit end of gas pipeline is positioned at the space of first water receptacle 123 and shell 121 encirclements, and is higher than the water surface in first water receptacle 123; First bell jar 122 covers on the exit end of gas pipeline, and first bell jar, 122 tops are provided with a pull bar 124, and this pull bar 124 passes from the through hole at shell 121 tops, and pull bar 124 seals with the joint portion of shell 121 top through holes, to avoid gas leaking.
The bottom of second water receptacle 131 has a through hole, and this through hole is provided with pipeline, and this through hole overlaps with the through hole at shell 121 tops; Second bell jar 132 is connected in pull bar 124, and covers on the top of second water receptacle, 131 pipelines.Water level in second water receptacle 131 is darker, and second bell jar 132 is longer simultaneously, no matter pull bar 124 pull-ups or fall, and the bottom of second bell jar 132 is positioned at below the water surface of second water receptacle 131 all the time.
When gasification reaction carries out, ceaselessly water filling in first water receptacle 123.When not needing gas supply, first bell jar 122 falls, and covers on the exit end of gas pipeline, and this moment, the bottom of first bell jar 122 was positioned at below the water surface, and the combustion gas in the gas pipeline is just lived by the water seal in first bell jar 122 and first water receptacle 123; When the needs gas supply, pull bar 124 pull-ups cover on first bell jar 122 of the exit end of gas pipeline, and combustion gas just can be passed through from the gas outlet on the shell 121 128; When the gas quantity that needs when the downstream user of gasification reaction system was less than the gas quantity that reaction generates, unnecessary combustion gas can enter diffuse channel 111, and is lighted at the exit end of diffuse channel 111.
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, water seal arrangement such as 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, stokehold pay-off (as worm conveyor 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 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 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.
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 worm conveyor 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. biomass combustible gas water seal arrangement that is used for the biomass gasification reaction system, the gas pipeline that described biomass gasification reaction system comprises fluidized bed gasification reactor and is connected in described fluidized bed gasification reactor; It is characterized in that described water seal arrangement comprises:
First water receptacle, its bottom has a through hole, and described gas pipeline passes from this through hole, and the through hole of its bottom and the sealing of the joint portion of gas pipeline are to avoid gas leaking;
Shell, it covers in the described first water receptacle top, and its underpart is equipped with a plurality of limbers; Which is provided with gas outlet, its top is provided with the through hole that passes for pull bar; The exit end of described gas pipeline is positioned at the space of described first water receptacle and shell encirclement, and is higher than the water surface in described first water receptacle;
First bell jar, it is positioned within the described shell, covers on the exit end of described gas pipeline, and its bottom is positioned at below the water surface of described first water receptacle;
Second water receptacle is positioned at the top of described shell, and its bottom has a through hole, and this through hole is provided with pipeline, and this through hole overlaps with the through hole of described cover top portion;
Pull bar, the pull bar bottom is connected in the top of described first bell jar, and passes from the through hole of described cover top portion;
Second bell jar, it is connected in described pull bar, and covers on the top of the described second water receptacle pipeline, and its bottom is positioned at below the water surface of described second water receptacle.
2. water seal arrangement as claimed in claim 1 is characterized in that, the first water receptacle lower sidewall of described water seal arrangement is provided with and is used to inject high pressure water high-pressure water inlet that purges and the high pressure water outlet that is used for blowdown.
3. water seal arrangement as claimed in claim 1 is characterized in that, the described first water receptacle side wall upper part is equipped with overflow weir.
4. water seal arrangement as claimed in claim 1 is characterized in that, described shell is provided with and diffuses mouth.
5. the biomass gasification reaction system of the described water seal arrangement of one of an employing such as claim 1-4.
6. biomass gasification reaction as claimed in claim 5 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, the gas outlet of described second tripping device is provided with described water-sealed valve.
7. biomass gasification reaction as claimed in claim 6 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.
8. biomass gasification reaction as claimed in claim 6 system, it is characterized in that, described biomass gasification reaction system further comprises heat exchanger, wherein, from the combustion gas of the described second tripping device gas outlet with from the gasifying medium of described gasifying medium plenum system this heat exchanger of flowing through, and the generation heat exchange, gasifying medium is preheated, and combustion gas is cooled; Afterwards, the gasifying medium that is preheated then via the gasifying medium of described fluidized bed gasification reactor inlet, is sent into described fluidized bed gasification reactor, and the downstream unit of described biomass gasification reaction system is then delivered in the combustion gas that is cooled.
9. biomass gasification reaction as claimed in claim 6 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.
10. biomass gasification reaction as claimed in claim 6 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205871398U CN201923987U (en) | 2010-11-01 | 2010-11-01 | Biomass fuel gas water seal device and biomass gasification reaction system employing same |
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|---|---|---|---|
| CN2010205871398U CN201923987U (en) | 2010-11-01 | 2010-11-01 | Biomass fuel gas water seal device and biomass gasification reaction system employing same |
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| CN201923987U true CN201923987U (en) | 2011-08-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974352A (en) * | 2010-11-01 | 2011-02-16 | 广州迪森热能技术股份有限公司 | Biomass combustible gas water-seal device and biomass gasification system using same |
-
2010
- 2010-11-01 CN CN2010205871398U patent/CN201923987U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974352A (en) * | 2010-11-01 | 2011-02-16 | 广州迪森热能技术股份有限公司 | Biomass combustible gas water-seal device and biomass gasification system using same |
| CN101974352B (en) * | 2010-11-01 | 2013-03-27 | 广州迪森热能技术股份有限公司 | Biomass combustible gas water-seal device and biomass gasification system using same |
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