CN101967400A - Biomass gasifying parallel connection reaction system - Google Patents
Biomass gasifying parallel connection reaction system Download PDFInfo
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- CN101967400A CN101967400A CN2010105279145A CN201010527914A CN101967400A CN 101967400 A CN101967400 A CN 101967400A CN 2010105279145 A CN2010105279145 A CN 2010105279145A CN 201010527914 A CN201010527914 A CN 201010527914A CN 101967400 A CN101967400 A CN 101967400A
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Abstract
The invention discloses a biomass gasifying parallel connection reaction system which comprises two or more fluidized bed gasifying reactors, two sets or more sets of more than two classes of separating devices, a biomass raw material supply system and a gasifying medium supply system, wherein the two or more fluidized bed gasifying reactors are arranged in parallel and used for preparing biomass gas; the two sets or more sets of more than two classes of separating devices are respectively arranged outside each fluidized bed gasifying reactor and used for separating reaction products of the fluidized bed gasifying reactors; each set of separating device at least comprises a first separating device and a second separating device; the biomass raw material supply system provides reaction raw materials for the fluidized bed gasifying reactors; and the gasifying medium supply system provides gasifying media for the fluidized bed gasifying reactors. A plurality of parallel fluidized bed gasifying reactors can simultaneously carry out reaction. The invention not only improves the gas output by many times but also realizes the control of output gas flow by controlling the on-off of a gas output pipeline of each fluidized bed gasifying reactor; in addition, when a reactor or a matching device thereof has failure for overhauling, the normal running of other reactors can not be influenced.
Description
Technical field
The present invention relates to a kind of biomass gasification reaction system, more particularly, the present invention relates to a kind of gasifying biomass reactive system in parallel.
Background technology
The crisis of fossil and fossil energy makes people pay attention to the utilization of renewable energy source more.And biomass energy be exactly a kind of renewable, can store with substitute, reserves are huge, the green energy resource of carbon balance.
The essence of biomass energy is to be fixed in tellurian sun power by photosynthesis of plants.According to statistics, the annual energy of storing of plant is equivalent to 10 times of world's main fuel consumption approximately, and is less than 1% of its total amount as the utilization of the energy.
The biomass energy feed distribution is wide, reserves are big, cost is low, applied range, and is in theory, inexhaustible.It still is unique renewable energy source that can be converted into clean fuel, and its objectionable impurities (sulphur and nitrogen etc.) content only is 1/10 of middle matter bituminous coal, and its energy utilization simultaneously can realize greenhouse gases CO
2Zero release.
The annual biomass energy that generates by photosynthesis is about 5,000,000,000 tons of dry-matteies.At present China's stalk resource amount surpasses 7.2 hundred million tons, amounts to about 3.6 hundred million tons of standard coals, except that about 1.2 hundred million tons as the purposes such as feed, papermaking, weaving and building materials, all the other 600,000,000 tons all can be used as energy purposes.
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.
Among the Chinese patent ZL 200410027427.7 (CN 1232614C) a kind of biomass mixing gasifying technology and device thereof are disclosed, gasifying stage and back gasifying stage before it comprises.Wherein, at preceding gasifying stage, biomass material adopts the circulating fluidized bed gasifying process to carry out pyrolytic gasification, and at the back gasifying stage, biomass material adopts the downdraft gasifying process to carry out pyrolytic gasification.The gasification installation of this patent is a kind of combined gasification furnace of being made up of circle fluidized-bed gasification furnace and downdraft fixed-bed gasification furnace.Be characterized in handling simultaneously different shape such as granular and blocky biomass material, but its shortcoming is also clearly: the gasification furnace structure complexity, its output is less, and flow is uncontrollable, shuts down during trouble shooting, is not suitable for making on a large scale the occasion of gas.
Chinese patent ZL 98122264.1 (CN 1098911C) discloses a kind of biomass gasifying and purifying circular fluid-bed system, it adopts preheating of air formula circulating fluidized bed as combustion gas generation and air preheating system, constitutes the gas-purification system by cyclonic separator, Venturi tube and water wash column.The problem that this device exists also that output is less, flow is uncontrollable and shuts down during trouble shooting; And, owing to adopt circulating fluidized bed, and circulating fluidized bed adopt inertial separator to product and not the material of complete reaction separate, thereby its charcoal refluxes and is difficult to control; In addition, the cyclonic separator that is adopted in this patent, with isolated unreacted completely material directly discharged, both wasted, brought aftertreatment or environmental issue again.
At present, mainly there is following several problem in the gasifying biomass unit that puts into production:
(1) combustion gas output is few.Can not satisfy the extensive demand of using the downstream unit of gas such as metallurgy, generating, pottery and glass production.
(2) flow is uncontrollable.Especially on a large scale make gas equipment, its output is constant, when downstream device demand hour, unnecessary combustion gas forms waste.
(3) shut down during trouble shooting.When device fails is overhauled, want closing device usually, can avoid taking place security incident like this, but simultaneously, can not produce in the time of overhaul of the equipments, be equal to the idleness of equipment, formed waste.
(4) 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;
(5) 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;
(6) 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;
(7) 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
Shortcoming at prior art, the purpose of this invention is to provide a kind of gasifying biomass reactive system in parallel, to improve combustion gas output, not influence productions, raising gasification efficiency and combustion gas thermal value when realizing the controlled and trouble shooting of flow, reduce the generation of impurity such as tar and dust, reduce secondary pollution.
To achieve these goals, the invention provides a kind of gasifying biomass reactive system in parallel, it comprises:
Two or more, the parallel fluidized bed gasification reactor that is used to prepare biological fuel gas that is provided with;
Two covers or two covers above, be arranged at outside each fluidized bed gasification reactor respectively and the reaction product of this fluidized bed gasification reactor carried out tripping device more than the isolating two-stage, every cover tripping device comprises first tripping device and second tripping device at least;
The biomass material plenum system of reaction raw materials is provided for fluidized bed gasification reactor; And
The gasifying medium plenum system of gasifying medium is provided for fluidized bed gasification reactor.
In this present invention's gasifying biomass reactive system in parallel, each fluidized bed gasification reactor correspondence is provided with independent tripping device; Corresponding two covers of two or more fluidized bed gasification reactors or the above tripping device of two covers, its can be shared a cover biomass material plenum system and a cover gasifying medium plenum system, also can be that each fluidized bed gasification reactor correspondence is provided with each fluidized bed gasification reactor correspondence of independent tripping device and is provided with independent biomass material plenum system and/or gasifying medium plenum system.On the one hand, this parallel system can be saved shared device, on the other hand, this parallel system provides huge handiness, for example can be as the case may be, can the closed portion fluidized bed gasification reactor during underload extremely corresponding upstream device, can open all fluidized bed gasification reactors during high loading.
In gasifying biomass of the present invention reactive system in parallel, 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.Above-mentioned two or more fluidized bed gasification reactor provides reaction raw materials, provides gasifying medium by the gasifying medium plenum system by the biomass material plenum system, can carry out gasification reaction simultaneously.Gasification reaction material that produce, that include combustion gas and biological particles separates by the tripping device more than the two-stage, and the biological particles that separation obtains is got back to fluidized bed gasification reactor and proceeded gasification reaction.
Each 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;
Each 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
Each 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 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.
Above-mentioned tripping device also can be provided with the 3rd tripping device after first tripping device and second tripping device, separate device to form three grades.In order to improve isolating effect, also can be provided with the 4th, the 5th ... tripping device, its principle is identical, does not repeat them here.Wherein, the material outlet of the tripping device of second-stage separation device or last step (gas outlet) promptly is connected to heat exchanger.
In order to control the Tong Heguan of combustion gas, the gas outlet of the tripping device of each second tripping device or last step (hereinafter to be referred as second tripping device) is provided with water-sealed valve.This water-sealed valve comprises water receptacle, outer cover, inner cover, pull bar.Water receptacle bottom has a through hole, and gas pipeline passes from this through hole, and the shape of this through hole, size are complementary with the gas pipeline that passes this through hole, and the contact part of the two welds.Outer cover covers in water receptacle top, the contact part welding of the two, and outer cover is provided with gas outlet, and the outer cover top is provided with through hole.The free end of gas pipeline is positioned at the space of water receptacle and outer cover encirclement, and is higher than the water surface in the water receptacle.Inner cover covers on the free end of gas pipeline, and inner cover is provided with pull bar, and this pull bar stretches out from the through hole at outer cover top.
The combustion gas that biomass gasification reaction produces is delivered to the downstream user place by gas pipeline.Having only gas pipeline is low pressure with respect to fluidized bed gasification reactor, and gas pipeline could be successfully led in the combustion gas that fluidized bed gasification reactor produces.If the combustion gas that downstream user needs is less, and the combustion gas that reactive system produces is more, and unnecessary combustion gas makes and produces high pressure in the gas pipeline, causes a large amount of combustion gas to accumulate in the vapourizing furnace, under the such hot environment of fluidized bed gasification reactor, critical accident such as can blast.For fear of the generation of this situation, native system also comprises two or more, is connected to the bleeding device of each water-sealed valve, and each this bleeding device comprises the diffuse channel of vertically setting up and is arranged at the vertical portfire of this diffuse channel.The outer cover of water-sealed valve is provided with one and diffuses mouth, and this diffuses a mouthful connection diffuse channel, and the exit end of diffuse channel is provided with portfire.Like this, unnecessary combustion gas burns by bleeding device, has kept the relatively low pressure in the gas pipeline, has avoided the combustion gas of excessive generation to gather the Peril Incident that the gasification reaction system causes.
In gasifying biomass of the present invention reactive system in parallel, 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.
Further comprise the gas outlet that is connected in second tripping device and the heat exchanger between the gasifying medium plenum system at gasifying biomass of the present invention reactive system in parallel.This heat exchanger is positioned at after the water-sealed valve, and it can be one, and the one end connects the gasifying medium plenum system, and the other end connects the gas outlet of each second tripping device; This heat exchanger also can be a plurality of, and its number is consistent with the number of fluidized bed gasification reactor, and an end of each heat exchanger connects the gasifying medium plenum system, and the other end connects the gas outlet of one second tripping device.Wherein, from the combustion gas of the second tripping device gas outlet with from the gasifying medium of the gasifying medium plenum system heat exchanger of flowing through, and heat exchange takes place, 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 gasifying biomass reactive system in parallel 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 gasifying biomass of the present invention reactive system in parallel, its biomass material plenum system can comprise stokehold storage device and two or more, the stokehold pay-off that is connected with described fluidized bed gasification reactor respectively; Wherein, the stokehold storage device comprises surge bunker and working bin, and surge bunker and working bin all have opening for feed and discharge port, 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.
Gasifying biomass of the present invention reactive system in parallel also comprises feeding-distribution device, this feeding-distribution device is positioned at its top feed mouth top of surge bunker, its top has an opening for feed, and that its bottom has is one or more, the discharge port corresponding with the opening for feed of described surge bunker respectively.Biological particles that prepare to participate in reaction enters different stokehold pay-offs by this feeding-distribution device, and then enters different fluidized bed gasification reactors and react.For example, when fluidized bed gasification reactor of the present invention had two, feeding-distribution device can be T-valve, and its top has an opening for feed, and its bottom has two discharge ports, and these two discharge ports are corresponding with a surge bunker opening for feed respectively.
More controlled for the gasification reaction that makes each fluidized bed gasification reactor, each discharge port of above-mentioned feeding-distribution device all has electrically operated valve, to control the inlet amount of corresponding fluidized bed gasification reactor.
Further, also comprise feed bin and pay-off in gasifying biomass of the present invention reactive system in parallel, 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 feeding-distribution device.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, enters feeding-distribution device by the high spud angle conveying belt, finally finishes to surge bunker reinforced.
Preferably, in gasifying biomass of the present invention reactive system in parallel, first e Foerderanlage, second e Foerderanlage and/or stokehold pay-off are helix transporting device.
Because fluidized bed gasification reactor can produce some solid waste, if untimely eliminating can influence normally carrying out of gasification reaction.Thereby, two or more can also be set, export the slag discharging device that links to each other with the waste of described fluidized bed gasification reactor respectively, this slag discharging device can be 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 invention 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 waste storage device, and this waste storage device is 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 present invention is provided with parallel a plurality of fluidized bed gasification reactors, and it can react simultaneously.Increased the output of combustion gas on the one hand, made combustion gas output obtain the lifting of several times; On the other hand, open and close, realized the controlled of output gas flow by the combustion gas output channel of controlling each fluidized bed gasification reactor; In addition, when a reactor or its corollary apparatus break down when overhauling, can not influence the normal operation of other reactor; Because each reactor all is provided with multi-stage separation device, and biological particles can fully be reacted, and has improved gasification efficiency, has saved the energy, has produced more combustion gas, has 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 present invention, but the present invention is not limited to these embodiment, any on essence spirit of the present invention improvement or substitute, still belong to scope required for protection in claims of the present invention.
Description of drawings
Fig. 1 is the top view figure (frontview) of the parallel system of the embodiment of the invention;
Fig. 2 is the vertical view of parallel system shown in Figure 1;
Fig. 3 is the side structure synoptic diagram of parallel system shown in Figure 1;
Fig. 4 is the side structure synoptic diagram of the parallel system of another embodiment of the present invention.
Embodiment
Fig. 1-the 3rd, the synoptic diagram of the gasification system in parallel of an embodiment of the present invention, this embodiment comprise that two fluidized bed gasification reactors, each fluidized bed gasification reactor comprise that a cover two-stage tripping device, each fluidized bed gasification reactor comprise the gasifying medium plenum system that it is independent.
Shown in Figure 4 is the side structure synoptic diagram of the parallel system of another embodiment of the present invention, and the embodiment shown in this embodiment and Fig. 1-3 is similar, but further shows the feed bin system among Fig. 4.
Gasifying biomass shown in Figure 4 reactive system in parallel comprises two parallel fluidized bed gasification reactors 1, feed bin 8, horizontal conveying belt 91, high spud angle conveying belt 92, feeding-distribution device such as T-valve 7, and two first tripping devices that link to each other with each fluidized bed gasification reactor 1 respectively such as cyclonic separator 2, two second tripping devices that link to each other with each first tripping device such as cyclonic separator 2 respectively such as cyclonic separator 3, two water-sealed valves 12 that link to each other with the gas outlet of each second tripping device such as cyclonic separator 3 respectively, be located at diffuse channel 111 and portfire 112 on each water-sealed valve 12, two heat exchangers 5 that link to each other with the gas outlet of each water-sealed valve 12 respectively, the gasifying medium plenum system, corresponding with each fluidized bed gasification reactor 1 respectively two surge bunkers 61 and two working bins 62, two stokehold pay-offs that link to each other with each fluidized bed gasification reactor 1 respectively such as worm conveyor 63 and two waste pipe 101 and two slag discharging devices such as worm conveyor 102, waste storage device 103.In the present embodiment, the gasifying medium plenum system send device (as gas blower 4) and corresponding pipeline for two wind that link to each other with each heat exchanger 5 respectively; Certainly, can adopt the gasifying medium plenum system of other form in other embodiments fully.
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 feeding-distribution device such as T-valve 7.The bottom discharge mouth of feeding-distribution device such as T-valve 7 lays respectively at its top feed mouth top of two surge bunkers 61.
The top of each surge bunker 61 has opening for feed, and the bottom has discharge port; The top of each working bin 62 has opening for feed, and the bottom has discharge port; A surge bunker 61 and a working bin 62 are arranged up and down, and its top feed mouth of this working bin 62 is positioned at the below of the bottom discharge mouth of this 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.
It is pointed out that surge bunker 61 and working bin 62 can have only one, two discharge ports are told corresponding to two stokehold pay-offs such as worm conveyor 7 in the bottom of working bin 62.Accordingly, feeding-distribution device such as T-valve 7 can omit, and the end of high spud angle conveying belt 91 is positioned at its top feed mouth top of surge bunker 61, promptly carries out sub-material by working bin 62.
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.
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 present embodiment is as follows:
Biological particles enters feeding-distribution device such as T-valve 7 from feed bin 8 through horizontal conveying belt 91 and high spud angle conveying belt 92, enter two surge bunkers 61 from two discharge ports of T-valve 7 bottoms, enter working bin 62 through surge bunker 61 then, and enter fluidized-bed 1 through worm conveyor 7.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 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 gasifying biomass reactive system in parallel is delivered in the combustion gas that is cooled.Unnecessary combustion gas enters diffuse channel 111, in the lit-end of diffuse channel 111.
Through after the heat exchange, converge to together from the combustion gas of two fluidized bed gasification reactors, be transported to downstream unit.
Though the present invention discloses as above with preferred embodiment, is not in order to limit scope of the invention process.Any those of ordinary skill in the art, promptly every when doing a little improvement in not breaking away from invention scope of the present invention according to the equal improvement that the present invention did, should be invention scope of the present invention and contain.
Claims (10)
1. gasifying biomass reactive system in parallel, it comprises:
Two or more, the parallel fluidized bed gasification reactor that is used to prepare biological fuel gas that is provided with;
Two covers or two covers above, be arranged at outside each fluidized bed gasification reactor respectively and the reaction product of this fluidized bed gasification reactor carried out tripping device more than the isolating two-stage, every cover tripping device comprises first tripping device and second tripping device at least;
The biomass material plenum system of reaction raw materials is provided for fluidized bed gasification reactor; And
The gasifying medium plenum system of gasifying medium is provided for fluidized bed gasification reactor.
2. gasifying biomass as claimed in claim 1 reactive system in parallel, it is characterized in that each 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;
Each 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
Each 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.
3. gasifying biomass as claimed in claim 2 reactive system in parallel is characterized in that the gas outlet of each described second tripping device is provided with water-sealed valve.
4. gasifying biomass as claimed in claim 3 reactive system in parallel, it is characterized in that, it further comprises two or more, is connected to the bleeding device of each water-sealed valve, and each described bleeding device comprises the diffuse channel of vertically setting up and is arranged at the vertical portfire of this diffuse channel; Wherein, each water-sealed valve is provided with and diffuses mouth, and this diffuses mouth and is connected with the diffuse channel of described bleeding device.
5. gasifying biomass as claimed in claim 2 reactive system in parallel is characterized in that it further comprises one or more, as to be connected in second tripping device gas outlets and the heat exchanger of described gasifying medium plenum system.
6. gasifying biomass as claimed in claim 2 reactive system in parallel, it is characterized in that described biomass material plenum system comprises one or more stokeholds storage device and two or more, the stokehold pay-off that is connected with described fluidized bed gasification reactor respectively; Wherein, each described stokehold storage device comprises surge bunker and working bin, and described surge bunker and described working bin all have opening for feed and discharge port, and the opening for feed of described working bin engages with the discharge port of described surge bunker; Each 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.
7. gasifying biomass as claimed in claim 5 reactive system in parallel, it is characterized in that, described reactive system in parallel also comprises feeding-distribution device, described feeding-distribution device is positioned at its top feed mouth top of described surge bunker, the top of described feeding-distribution device has an opening for feed, and that the bottom of described feeding-distribution device has is one or more, the discharge port corresponding with the opening for feed of described surge bunker respectively.
8. gasifying biomass as claimed in claim 6 reactive system in parallel is characterized in that it further comprises feed bin and pay-off, and described feed bin comprises its top feed mouth and bottom discharge mouth; Described pay-off comprises horizontal conveying belt and high spud angle conveying belt, described horizontal conveying belt is positioned at the bottom discharge mouth below of described feed bin, the initiating terminal of described high spud angle conveying belt engages with described horizontal feed end of tape, and the end of described high spud angle conveying belt is positioned at its top feed mouth top of described feeding-distribution device.
9. gasifying biomass as claimed in claim 5 reactive system in parallel is characterized in that described first e Foerderanlage, second e Foerderanlage and/or stokehold pay-off are helix transporting device.
10. gasifying biomass as claimed in claim 2 reactive system in parallel, it is characterized in that, it further comprises two or more, exports the slag discharging device that links to each other with the waste of described fluidized bed gasification reactor respectively, 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 |
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| CN2010105279145A CN101967400A (en) | 2010-11-01 | 2010-11-01 | Biomass gasifying parallel connection reaction system |
| PCT/CN2011/081415 WO2012059019A1 (en) | 2010-11-01 | 2011-10-27 | Biomass gasification complete apparatus and system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105279145A CN101967400A (en) | 2010-11-01 | 2010-11-01 | Biomass gasifying parallel connection reaction system |
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| CN114728223A (en) * | 2019-11-11 | 2022-07-08 | 塔卡查有限公司 | Systems and methods for controlling biomass conversion systems |
| WO2025026801A1 (en) | 2023-07-31 | 2025-02-06 | Basf Se | Syngas production plant and method for continuous producing syngas by gasification |
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