CN202186985U - Gasification and purification system for large-scale biomass briquetting fuel fixing bed - Google Patents
Gasification and purification system for large-scale biomass briquetting fuel fixing bed Download PDFInfo
- Publication number
- CN202186985U CN202186985U CN2011202270844U CN201120227084U CN202186985U CN 202186985 U CN202186985 U CN 202186985U CN 2011202270844 U CN2011202270844 U CN 2011202270844U CN 201120227084 U CN201120227084 U CN 201120227084U CN 202186985 U CN202186985 U CN 202186985U
- Authority
- CN
- China
- Prior art keywords
- ash
- purification system
- interchanger
- gas
- macro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Solid-Fuel Combustion (AREA)
Abstract
The utility model discloses a gasification and purification system for a large-scale biomass briquetting fuel fixing bed, which comprises a loading device, a down-draft gasification furnace, a purification system and a fuel gas generating set, wherein the down-draft gasification furnace comprises a furnace chamber; the furnace chamber comprises a cylindrical water sandwich layer; a top cover is arranged at the top of the water sandwich layer; the bottom of the water sandwich layer is connected with an ash bin; the ash bin comprises an ash bin side part and an ash bin bottom wall; an air outlet is formed on the ash bin side part; a grate is arranged at the upper part of the ash bin; a material level power device is arranged on the head cover, and is in transmission connection with a fixing plate; a distributing motor is fixedly connected to the fixing plate; the output shaft of the distributing motor extends downwards into the top cover; a material rake is arranged at the bottom of the distributing motor; the loading device is a loading hoist; and the discharge pipe of the loading hoist penetrates the top cover, and extends into the furnace chamber. The gasification and purification system can be used for filtering particles above 10 Mum and particles below 10 Mum respectively; an electric coke seize device is adopted to ensure high purification of fuel gas; and the choosing of filter materials ensures that oxygen in the fuel gas is stably controlled below 1 percent.
Description
Technical field
The utility model relates to biomass energy comprehensive utilization technique field, especially a kind of purification system of utilizing biomass molding fuel as the energy.
Background technology
China is large agricultural country, and agricultural crop straw output is about 700,000,000 tons/year, occupies first place in the world.At present, the main application of China's stalk is papermaking, feed, the life in the countryside energy (use acts as a fuel), and some is used for going back Tian Zaofei, and remaining stalk goes out of use or burns." waste " that becomes " use is little " but must dispose; The annual summer harvest and when the autumn and winter; Always there are stalks such as a large amount of wheats, corn to burn, produced a large amount of heavy smogs, not only become the bottleneck problem of rural environment protection in the field; Even become the arch-criminal of bringing disaster to urban environment, become the new source of rural area pollution of area source.
Along with expanding economy, primary energy source supply growing tension has received attention as the renewable biomass energy that stores and transports; But because it has characteristics such as density is low, distribution is wide, the water ratio fluctuation is big; Cause its fortune cost of harvesting and storing high, utilising efficiency is low, can not utilize on a large scale always.According to above characteristics; The Energy Source Inst., Co., Ltd., Henan Prov. Academy of Sciences has been accomplished utility model patent CN200520030243.6 " biomass pellet fuel forming machine " and CN201020686245.1 " a kind of biomass fuel flat-die shaper " respectively in 2005 and 2010; Can be the compressing and compacting biomass moulding; First kind of patent molding device can low water ratio (15～20%), and the raw material of granularity little (overall dimension is less than 12mm) is processed into diameter 6～12mm, pellet density 1.0～1.3t/m
3, water ratio 10～12% biomass molding fuel.Second kind of patent molding device can higher water ratio (18～30%), granularity the biomass material of big (overall dimension is less than 50mm) be processed into diameter 15～35mm, pellet density 0.9～1.1t/m
3, the biomass molding fuel of water ratio 13～15%.Biomass molding fuel has that water ratio is little, density is big, and the storing cost is low, and smooth surface, internal friction are little, has increased the flowability of biomass; The even particle size of shaped fuel, good permeability is for the fixed-bed gasification furnace that designs the MW level provides condition.
Existing fixed bed gasification power generation system comprises feeding device, lower suction type vapourizing furnace, purification system and fuel gas generation unit; Feeding device adds the biomass moulding raw material in the vapourizing furnace, and gasification back combustion gas is sent to the generating of fuel gas generation unit after purifying through purification system.
The lower suction type fixed bed biomass gasification furnace mainly contains burner hearth, fire grate and grey storehouse and forms.According to the state of raw material in burner hearth, can be divided into bin stock layer, drying layer, zone of oxidation, reducing zone and grieshoch from top to bottom.In zone of oxidation, part biological raw material and airborne oxygen generation oxidizing reaction are thermopositive reaction, and for drying layer, pyrolytic layer and reducing zone provide heat, whether zone of oxidation temperature distribution in the horizontal direction evenly is the key that can the decision vapourizing furnace normally move.The lower suction type fixed-bed gasification furnace of existing operation does not raw materials usedly carry out the compressing and compacting moulding, and particle size differs, and in order to guarantee the normal operation of vapourizing furnace, requires to have thicker drying layer and pyrolytic layer.Existing fixed-bed gasification furnace zone of oxidation temperature can not be monitored, and in large diameter vapourizing furnace, zone of oxidation is prone to the situation of inclined to one side burning.Therefore, existing vapourizing furnace furnace diameter is controlled in the 2m, as is used for gasifying electricity generation, and generated output can only be below 1MW.
With the bigger biomass of the physical dimension difference of not moulding is that raw material is when gasifying; The ventilation property difference of the whole bed of material is bigger; Burner hearth can occur and burn, cause the zone of oxidation burning inhomogeneous, have part of oxygen and get in the combustion gas; Its oxygen level can not be stable be controlled in 1%, can not satisfy the requirement of static tar precipitating equipment.Tar foreign matter content in the combustion gas can only be controlled at 50mg/m
3In, can not satisfy the requirement of industrial gas, more can not satisfy the requirement of successive generating.Prior biological matter fixed bed gasification power generation system generally is used for countryside kitchen work usefulness gas or discontinuous small power generation system.
In a word, prior biological matter fixed bed gasification power generation system has following defective: 1. the vapourizing furnace diameter in the system can not strengthen (in the 2m), and generated output is less than 1MW when causing being used to generate electricity.2. the coal-tar middle oil foreign matter content of combustion gas is high (can only be controlled at 50mg/m
3Below).3. purification system is a wet purification, and the WWT difficulty is big, regularly replace the purification water, and the great amount of wastewater discharging is arranged.4. what the oxygen level in the combustion gas can not be stable is controlled in 1%, does not reach the requirement of using static tar precipitating equipment, and decontamination effect improving is restricted.5. need blowing out during ash discharge mechanism ash discharge in the existing vapourizing furnace.
The utility model content
The purpose of the utility model is to provide a kind of macro-organism matter shaped fuel fixed bed gasification purification system, and to be suitable for the biomass molding fuel be raw material to the structure of vapourizing furnace in this power generation system, and generated output is broken through the restriction of 1MW.
For realizing above-mentioned purpose; The macro-organism matter shaped fuel fixed bed gasification purification system of the utility model comprises feeding device, lower suction type vapourizing furnace, purification system and fuel gas generation unit, and said lower suction type vapourizing furnace comprises burner hearth, and burner hearth comprises the water interlayer of tubular; The top of water interlayer is provided with top cover; The bottom of water interlayer is connected with grey storehouse, and grey storehouse includes grey storehouse sidepiece and grey storehouse diapire, and grey storehouse sidepiece is provided with the air outlet; Hui Cang top is provided with fire grate; Said top cover is provided with the material level PWR PLT, and the material level PWR PLT are connected with a retaining plate, is fixedly connected with the cloth motor on the retaining plate, and the output shaft of cloth motor stretches into top cover downwards and its bottom is provided with claw; Said feeding device is the material loading lift, and the extraction line of material loading lift passes said top cover and puts in burner hearth inside.
Below, said grey storehouse is provided with the ash disposal motor; The ash disposal motor is connected with speed reduction unit; The output shaft of speed reduction unit extends upwardly the ash charge storehouse and its top is higher than said fire grate, and the top of said reducer output shaft is connected with the first ash rake, and the reducer output shaft of grey storehouse diapire top is provided with the second ash rake; Ash storehouse diapire is provided with ash port, and ash port is connected with the first ash discharge screw feeder.
This system also includes heat-exchange system, and heat-exchange system comprises first interchanger, second interchanger and the water tower that dries in the air, and first and second interchanger are communicated with through the circulating water line circulation with the said water tower that dries in the air respectively, and the circulating water line in the water tower exit of drying in the air is provided with recycle pump; Said purification system comprises gas circuit cyclonic separator, strainer, first liquid knockout, second liquid knockout and electric coke catcher, and the ash output hole place of said gas circuit cyclonic separator is provided with the second ash discharge screw feeder; The air outlet of said vapourizing furnace through gas circuit successively with described gas circuit cyclonic separator; Strainer, first interchanger, first liquid knockout, electric coke catcher, second interchanger, second liquid knockout and fan are connected in series; The air outlet of said fan is connected with gas-holder, and the air outlet of gas-holder is connected with said fuel gas generation unit; Said first and second liquid knockouts, said first and second interchanger and said electric coke catcher are connected with a liquid storing pool through pipeline respectively; The filtrate of selecting for use in the said strainer is the biomass after the moulding, as the density of the biomass of filtrate more than 1.1t/m3.
The exit of the said first and second ash discharge screw feeders all is connected with dirt road cyclonic separator through the ash discharge pipeline, and the ash discharge pipeline in the first and second ash discharge screw feeder exits is provided with wind stopping device; Said dirt road cyclonic separator is connected with sack cleaner through the ash discharge pipeline, and sack cleaner is connected with ash-storing bin through the ash discharge pipeline.
Be connected with bypass emptying mechanism through by-pass line on the gas circuit before the said electric coke catcher inlet mouth, bypass emptying mechanism comprises the induced draft fan that is located on the said by-pass line, and the by-pass line before the induced draft fan is provided with by-pass valve.
Said induced draft fan is connected with combustion unit through pipeline, and it is the auxiliary burner of fuel that combustion unit is provided with liquefied gas or oil.
Gas circuit between said strainer and said first interchanger is provided with pressure warning unit and TM; Gas circuit between said electric coke catcher and said second interchanger is provided with pressure warning unit and TM, and the gas circuit between said second interchanger and second liquid knockout is provided with pressure warning unit and TM.
Diameter as the biomass of filtrate is 30mm, and length is 30～60mm.
The utlity model has following advantage:
1. the utility model is raw material with the biomass molding fuel, can guarantee the continuous operation of large-scale vapourizing furnace.Biomass after the moulding, its uniform particles, good fluidity when in large-scale vapourizing furnace, gasifying, can guarantee that gas stream in the stove is even, thereby uniformity of temperature profile is not prone to localized hyperthermia, for designing large-scale lower suction type fixed-bed gasification furnace possibility is provided.Because claw can move up and down with the cloth motor, therefore the rotation through claw can guarantee that the bed of material is evenly distributed.The biggest problem of large-scale fixed-bed gasification furnace is the uniformity of temperature profile of zone of oxidation each several part.The vapourizing furnace bed of material can be divided into storing layer, drying layer, pyrolytic layer, zone of oxidation, reducing zone and grieshoch (bed of material distributes identical with prior art) from top to bottom.After the vapourizing furnace diameter amplifies (more than the 3m), zone of oxidation is prone to localized hyperthermia, when temperature surpasses 950 ℃, the slagging scorification problem will occur, further causes the inhomogeneous of cloth wind, has more aggravated the inhomogeneous of temperature, and vapourizing furnace can not normally be moved.In the utility model, owing to can pass through material loading lift continuous charging, therefore can reduce the thickness of bin stock layer, drying layer and pyrolytic layer, this trilaminar total thickness is controlled in 100～150mm.When the zone of oxidation temperature is even, the heat transmission that can make progress uniformly, drying layer and pyrolytic layer can keep thickness even.When localized hyperthermia appearred in zone of oxidation, its heat to pyrolytic layer and drying layer transmission increased, and drying layer and pyrolytic layer are converted into zone of oxidation, and the staff can take the measure of corresponding local cooling according to this characteristic.The setting of water interlayer can be taken away the heat of reaction of part, and the raw material on stove internal oxidation layer top is lowered the temperature rapidly, banks up a fire thereby be beneficial to.Because vapourizing furnace is able to strengthen, so gas production rate is improved, and generated output is able to break through the restriction of like product maximum generation power (1MW) in the past when being used to generate electricity.
2. when reaching design, bed thickness goes up in limited time; The first ash rake rotates with the second ash rake simultaneously; Grieshoch on the rotation disturbance fire grate of the first ash rake, part ash can fall from fire grate and get into grey storehouse, and the rotation of the second ash rake can be brought the ash content in the grey storehouse into the first ash discharge screw feeder and outwards output.Bed thickness reaches design and stops ash discharge down in limited time.Above-mentioned ash discharge structure and ash discharge process can be discharged the ash content in the grieshoch continuously under the situation of not blowing out, thereby have guaranteed the continuous operation of vapourizing furnace.
3. the high temperature biological fuel gas of from vapourizing furnace, discharging contains a large amount of solid particulates, separated the going out of solid particulate during through the cyclonic separator in the purification system more than the 10 μ m; Solid particulate when combustion gas is followed through strainer below most of 10 μ m is filtered.The type selecting of filtrate is because volatile content reaches more than 70% in the biomass; Fugitive constituent can be separated out in a large number when temperature reaches 450 ℃; The ash content of small particle size in the combustion gas can be stored in the space that stays after separating out, and the charcoal that the shaped fuel pyrolysis produces when high temperature simultaneously also can react with a spot of oxygen in the combustion gas, generates CO; Thereby the oxidation stability in the combustion gas is controlled at below 1%, for the steady operation of electric coke catcher provides condition.Can improve the thermal value of combustion gas after the volatile matter entering combustion gas of separating out in the filtrate.The setting of heat-exchange system can be reduced to the temperature that needs with fuel gas temperature easily, specifically is that first interchanger is reduced to fuel gas temperature below 80 degree, so that electric coke catcher can be worked efficiently; Second interchanger is reduced to normal temperature (below 45 degree) with fuel gas temperature, is convenient to be sent to gas-holder and fuel gas generation unit and combustion power generation through fan.The setting of liquid storing pool is convenient to collect waste liquid, avoids waste liquid in environment, to discharge.
4. when the setting of wind stopping device can prevent ash discharge in the air admission vapourizing furnace.The setting of sack cleaner and ash-storing bin is convenient to filter and store dust.
5. when vapourizing furnace started, because fire box temperature does not reach working temperature, zone of oxidation did not have all formation, and the oxygen level in the flue gas is greater than 1%, but the combustiblecomponents of some, the gas of this moment can not get into the electric coke catcher of work.The setting of bypass emptying mechanism is convenient to just bring into operation in power generation system, and oxygen content was discharged combustion gas through bypass emptying mechanism greater than 1% o'clock in the combustion gas, forms potential safety hazard thereby avoid the too high combustion gas of oxygen content to get into electric coke catcher.
6. the setting of combustion unit is convenient to and can not be emitted behind the fuel gas buring of stable burning again, thereby reduces atmospheric pollution.When starting vapourizing furnace, auxiliary burner can be burnt objectionable constituent such as the charcoal particle in the flue gas, CO, thus non-pollutant discharge when reaching vapourizing furnace and starting.
7. be convenient to monitor temperature and pressure everywhere in this power generation system, guarantee the works better of system.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the structural representation of lower suction type vapourizing furnace in the utility model;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the B-B sectional view of Fig. 2;
Fig. 5 is the structural representation of torch formula combustion unit.
Embodiment
(direction shown in the arrow is the flow direction of pipeline medium among Fig. 1 to shown in Figure 5 like Fig. 1; The direction of arrow is the turning direction of claw among Fig. 3); The macro-organism matter shaped fuel fixed bed gasification purification system of the utility model comprises feeding device 1, lower suction type vapourizing furnace, purification system and fuel gas generation unit 2, and said lower suction type vapourizing furnace comprises burner hearth, and burner hearth comprises the water interlayer 21 of tubular; The top of water interlayer 21 is provided with top cover 22; The bottom of water interlayer 21 is connected with grey storehouse, and grey storehouse includes grey storehouse sidepiece 23A and grey storehouse diapire 23B, and grey storehouse sidepiece 23A is provided with air outlet 24; The joint portion of ash storehouse and water interlayer 21 is provided with refractory materials 25, is beneficial to keep the temperature of reducing zone, improves gasification efficiency.Hui Cang top is provided with fire grate 26; Said top cover 22 is provided with material level PWR PLT 27, and material level PWR PLT 27 are connected with a retaining plate 28, are fixedly connected with cloth motor 29 on the retaining plate 28, and the output shaft 29A of cloth motor 29 stretches into top cover 22 downwards and its bottom is provided with claw 31; Said feeding device 1 is the material loading lift, and the extraction line 3 of material loading lift passes said top cover 22 and puts in burner hearth inside.Said material level PWR PLT 27 preferably adopt the material level phonomoter, and the material level phonomoter is in transmission connection through leading screw 4 and retaining plate 28.
Extremely shown in Figure 4 like Fig. 2; Below, said grey storehouse is provided with ash disposal motor 6; Ash disposal motor 6 is connected with speed reduction unit 7; The output shaft 7A of speed reduction unit 7 extends upwardly the ash charge storehouse and its top is higher than said fire grate 26, and the top of said reducer output shaft 7A is connected with the first ash rake 8, and the reducer output shaft 7A of grey storehouse diapire 23B top is provided with the second ash rake 9; Ash storehouse diapire 23B is provided with ash port 11, and ash port 11 is connected with the first ash discharge screw feeder 12.
As shown in Figure 1; This system also includes heat-exchange system; Heat-exchange system comprises first interchanger 13, second interchanger 14 and the water tower 15 that dries in the air; First and second interchanger 13,14 are communicated with through circulating water line 16 circulations with the said water tower 15 that dries in the air respectively, and the circulating water line 16 in water tower 15 exits of drying in the air is provided with recycle pump 17.Wherein, first and second interchanger 13,14 all adopt tubular heat exchange.
As depicted in figs. 1 and 2, said purification system comprises gas circuit cyclonic separator 18, strainer 19, first liquid knockout 41, second liquid knockout 42 and electric coke catcher 43, and the ash output hole place of said gas circuit cyclonic separator 18 is provided with the second ash discharge screw feeder 44; The air outlet 24 of said vapourizing furnace through gas circuit 45 successively with described gas circuit cyclonic separator 18; Strainer 19, first interchanger 13, first liquid knockout 41, electric coke catcher 43, second interchanger 14, second liquid knockout 42 and fan 46 are connected in series; The air outlet of said fan 46 is connected with gas-holder 47, and the air outlet of gas-holder 47 is connected with said fuel gas generation unit 2; Wherein fan 46 preferably adopts roots blower.Said first and second liquid knockouts 41,42, said first and second interchanger 13,14 and said electric coke catcher 43 are connected with a liquid storing pool 48 through pipeline respectively.The filtrate of selecting for use in the said strainer 19 is the biomass after the moulding, as the concrete parameter of the biomass of filtrate is: diameter 30mm, length 30～60mm, density 1.1t/m
3More than.
As depicted in figs. 1 and 2, the exit of the said first and second ash discharge screw feeders 12,44 all is provided with wind stopping device 51 through the ash discharge pipeline 49 that ash discharge pipeline 49 is connected with dirt road cyclonic separator 52, the first and second ash discharge screw feeders 12,44 exits; Said dirt road cyclonic separator 52 is connected with sack cleaner 53 through ash discharge pipeline 49, and sack cleaner 53 is connected with ash-storing bin 61 through ash discharge pipeline 49.
As shown in Figure 1; Be connected with bypass emptying mechanism through by-pass line 54 on the gas circuit 45 before said electric coke catcher 43 inlet mouths; Bypass emptying mechanism comprises the induced draft fan 55 that is located on the said by-pass line 54, and the by-pass line 54 before the induced draft fan 55 is provided with by-pass valve 56.
As shown in Figure 1, said induced draft fan 55 is connected with combustion unit 57 through pipeline, and said combustion unit 57 can be a torch formula combustion unit shown in Figure 5, also can be other various types of combustion units.As shown in Figure 5, on combustion unit 57, preferably being provided with liquefied gas or oil is the auxiliary burner 62 of fuel.When the non-flammable waste gas of emptying, auxiliary burner 62 is started working, can burn objectionable constituent such as the charcoal particle in the flue gas, CO, thus non-pollutant discharge when reaching vapourizing furnace and starting.
As shown in Figure 1; Gas circuit 45 between said strainer 19 and said first interchanger 13 is provided with pressure warning unit 58 and TM 59; Gas circuit 45 between said electric coke catcher 43 and said second interchanger 14 is provided with pressure warning unit 58 and TM 59; Gas circuit 45 between said second interchanger 14 and second liquid knockout 42 is provided with pressure warning unit 58 and TM 59, so that monitor in this power generation system temperature and pressure everywhere, guarantees the works better of system.
To shown in Figure 5, during works better, the material loading lift promotes the back with the biomass molding fuel in the yard and sends into the burner hearth of lower suction type vapourizing furnace through extraction line 3 like Fig. 1, in burner hearth, forms the bed of material 32 promoting the circulation of qiization of going forward side by side.The bed of material 32 thickness reach in limited time in burner hearth, and the material loading lift stops material loading, and the first ash rake 8 begins to rotate, and ash content falls into grey storehouse, and the ash content in the turning handle ash storehouse of the second ash rake 9 is brought the ash discharge screw feeder into and discharged through wind stopping device 51.The bed of material 32 in the time of ash discharge in the burner hearth descends, and reduces to down in limited time when the bed of material 32 thickness to begin to feed in raw material again.Thereby guarantee the continuous operation of vapourizing furnace.Successively through gas circuit cyclonic separator 18, strainer 19, first interchanger 13, first liquid knockout 41, electric coke catcher 43, second interchanger 14 and second liquid knockout 42, last combustion gas is sent to gas-holder 47 and the final gas electricity generator combustion power generation that gets into through fan 46 to high-temperature fuel gas after the gasification (temperature is about 440 ℃) through gas circuit 45.Wherein, Recirculated water under the effect of recycle pump 17 in the heat-exchange system constantly flows; Heats in first and second interchanger 13,14 are taken to be discharged in the environment in the water tower 15 that dries in the air go, the recirculated water after the cooling circulates again in first and second interchanger 13,14 and carries out heat exchange.
When gas circuit cyclonic separator 18 is passed through in combustion gas, separated the going out of solid particulate that the 10 μ m that comprised in the combustion gas are above; Combustion gas then drops to below 80 ℃ through first interchanger, 13 its temperature of back so that catch burnt gas combustion gas is further purified; Combustion gas behind the temperature drop for the first time removes liquid through first liquid knockout 41, and liquid such as the tar in the cooling combustion gas, water flow to liquid storing pool 48 through pipeline and store.Remove combustion gas behind the liquid under the state of works better, get into electric coke catcher 43 further deep purifyings (just bring into operation in this power generation system, zone of oxidation does not all form and cause in the combustion gas oxygen content greater than 1% o'clock; Open by-pass valve 56 and induced draft fan 55; Combustion unit 57 is removed and supplies with in the combustion gas extraction; Through being disposed in the atmosphere again after the burning), the foreign matter content behind the deep purifying in the combustion gas is reduced to 10mg/m
3Below.Be cooled to normal temperature (below 45 ℃) back through the combustion gas after electric coke catcher 43 purifications through second interchanger 14 and flow into second liquid knockout 42, liquid such as the tar in the combustion gas behind the reducing temperature twice, water flow into liquid storing pool 48 by the road and store.The combustion gas that secondary removes behind the liquid is pumped to gas-holder 47 by fan 46, and then is sent to fuel gas generation unit 2 combustion power generations.
Because the utility model can strengthen as raw material, vapourizing furnace diameter with biomass molding fuel, so gas production rate is improved, and generated output is able to break through the restriction of like product maximum generation power (1MW) in the past when being used to generate electricity.Ash discharge structure of the utility model and ash discharge process can be discharged the ash content in the grieshoch continuously under the situation of not blowing out, thereby have guaranteed the continuous operation of vapourizing furnace.Claw 31 can move up and down with cloth motor 29 under the drive of material level PWR PLT 27, thereby guarantees that the bed of material is evenly distributed.The setting of purification system can guarantee the works better of electric coke catcher 43, and biological fuel gas is farthest purified.The setting of bypass emptying mechanism is convenient to just bring into operation in power generation system, and oxygen content was discharged combustion gas through bypass emptying mechanism greater than 1% o'clock in the combustion gas, forms potential safety hazard thereby avoid the too high combustion gas of oxygen content to get into electric coke catcher 43.
Claims (8)
1. macro-organism matter shaped fuel fixed bed gasification purification system; Comprise feeding device, lower suction type vapourizing furnace, purification system and fuel gas generation unit, it is characterized in that: said lower suction type vapourizing furnace comprises burner hearth, and burner hearth comprises the water interlayer of tubular; The top of water interlayer is provided with top cover; The bottom of water interlayer is connected with grey storehouse, and grey storehouse includes grey storehouse sidepiece and grey storehouse diapire, and grey storehouse sidepiece is provided with the air outlet; Hui Cang top is provided with fire grate; Said top cover is provided with the material level PWR PLT, and the material level PWR PLT are connected with a retaining plate, is fixedly connected with the cloth motor on the retaining plate, and the output shaft of cloth motor stretches into top cover downwards and its bottom is provided with claw; Said feeding device is the material loading lift, and the extraction line of material loading lift passes said top cover and puts in burner hearth inside.
2. macro-organism matter shaped fuel fixed bed gasification purification system according to claim 1; It is characterized in that: below, said grey storehouse is provided with the ash disposal motor; The ash disposal motor is connected with speed reduction unit; The output shaft of speed reduction unit extends upwardly the ash charge storehouse and its top is higher than said fire grate, and the top of said reducer output shaft is connected with the first ash rake, and the reducer output shaft of grey storehouse diapire top is provided with the second ash rake; Ash storehouse diapire is provided with ash port, and ash port is connected with the first ash discharge screw feeder.
3. macro-organism matter shaped fuel fixed bed gasification purification system according to claim 1 and 2; It is characterized in that: this system also includes heat-exchange system; Heat-exchange system comprises first interchanger, second interchanger and the water tower that dries in the air; First and second interchanger are communicated with through the circulating water line circulation with the said water tower that dries in the air respectively, and the circulating water line in the water tower exit of drying in the air is provided with recycle pump;
Said purification system comprises gas circuit cyclonic separator, strainer, first liquid knockout, second liquid knockout and electric coke catcher, and the ash output hole place of said gas circuit cyclonic separator is provided with the second ash discharge screw feeder;
The air outlet of said vapourizing furnace through gas circuit successively with described gas circuit cyclonic separator; Strainer, first interchanger, first liquid knockout, electric coke catcher, second interchanger, second liquid knockout and fan are connected in series; The air outlet of said fan is connected with gas-holder, and the air outlet of gas-holder is connected with said fuel gas generation unit;
Said first and second liquid knockouts, said first and second interchanger and said electric coke catcher are connected with a liquid storing pool through pipeline respectively;
The filtrate of selecting for use in the said strainer is the biomass after the moulding, as the density of the biomass of filtrate more than 1.1t/m3.
4. macro-organism matter shaped fuel fixed bed gasification purification system according to claim 3; It is characterized in that: the exit of the said first and second ash discharge screw feeders all is connected with dirt road cyclonic separator through the ash discharge pipeline, and the ash discharge pipeline in the first and second ash discharge screw feeder exits is provided with wind stopping device; Said dirt road cyclonic separator is connected with sack cleaner through the ash discharge pipeline, and sack cleaner is connected with ash-storing bin through the ash discharge pipeline.
5. macro-organism matter shaped fuel fixed bed gasification purification system according to claim 3; It is characterized in that: be connected with bypass emptying mechanism through by-pass line on the gas circuit before the said electric coke catcher inlet mouth; Bypass emptying mechanism comprises the induced draft fan that is located on the said by-pass line, and the by-pass line before the induced draft fan is provided with by-pass valve.
6. macro-organism matter shaped fuel fixed bed gasification purification system according to claim 5, it is characterized in that: said induced draft fan is connected with combustion unit through pipeline, and it is the auxiliary burner of fuel that combustion unit is provided with liquefied gas or oil.
7. macro-organism matter shaped fuel fixed bed gasification purification system according to claim 3; It is characterized in that: the gas circuit between said strainer and said first interchanger is provided with pressure warning unit and TM; Gas circuit between said electric coke catcher and said second interchanger is provided with pressure warning unit and TM, and the gas circuit between said second interchanger and second liquid knockout is provided with pressure warning unit and TM.
8. macro-organism matter shaped fuel fixed bed gasification purification system according to claim 3 is characterized in that: the diameter as the biomass of filtrate is 30mm, and length is 30～60mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202270844U CN202186985U (en) | 2011-06-30 | 2011-06-30 | Gasification and purification system for large-scale biomass briquetting fuel fixing bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202270844U CN202186985U (en) | 2011-06-30 | 2011-06-30 | Gasification and purification system for large-scale biomass briquetting fuel fixing bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202186985U true CN202186985U (en) | 2012-04-11 |
Family
ID=45918446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202270844U Expired - Fee Related CN202186985U (en) | 2011-06-30 | 2011-06-30 | Gasification and purification system for large-scale biomass briquetting fuel fixing bed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202186985U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786969A (en) * | 2012-08-07 | 2012-11-21 | 宁开敏 | Generation device for generating combustible gas by utilizing biomass fuel efficiently |
| CN111205893A (en) * | 2020-01-10 | 2020-05-29 | 清华大学 | Automobile disassembly waste pyrolysis gasification device and method based on vertical fixed bed |
-
2011
- 2011-06-30 CN CN2011202270844U patent/CN202186985U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102786969A (en) * | 2012-08-07 | 2012-11-21 | 宁开敏 | Generation device for generating combustible gas by utilizing biomass fuel efficiently |
| CN111205893A (en) * | 2020-01-10 | 2020-05-29 | 清华大学 | Automobile disassembly waste pyrolysis gasification device and method based on vertical fixed bed |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102277197B (en) | Cracking furnace system of biomass garbage | |
| CN202164270U (en) | High-efficiency plant carbonization furnace capable of continuously working | |
| CN101817012A (en) | Gasification treatment device for household refuse | |
| CN104804775A (en) | Method and system for producing combustible gas from domestic waste through pyrolysis gasification | |
| CN101250415B (en) | Double fluidized bed water-cooling biomass gasification furnace | |
| CN102268297A (en) | Large-sized biomass molding fuel fixed bed gasification power generation system | |
| CN202072674U (en) | High-speed biomass circulating fluidized bed gasifier | |
| CN201809316U (en) | Fixed-bed biomass gasification and power generation device | |
| CN101962558B (en) | Biomass combustible gas high-temperature oxygen-free reinforced dry-distillation pyrolysis plant | |
| CN107699295A (en) | A kind of biomass gasifying furnace automatic control system | |
| CN206051959U (en) | A kind of Novel medical rubbish plasma gasification processing system | |
| CN202186985U (en) | Gasification and purification system for large-scale biomass briquetting fuel fixing bed | |
| CN112628745B (en) | Gradient temperature-changing pyrolysis system for treating household garbage | |
| CN102329654B (en) | Biomass gasification device and process | |
| CN102241997B (en) | Integrated device for producing carbon continuously and utilizing hot blast by utilizing biomass fuels | |
| CN202116517U (en) | Biomass garbage cracking furnace system | |
| CN205893035U (en) | Low heat value mud " three change " processing apparatus | |
| CN101974351B (en) | Scale fixed bed biomass gasification power generation production technology and suite of equipment | |
| CN111500322A (en) | Biomass thermal cracking water-cooling carbon-gas co-production gasification system | |
| CN104152183B (en) | Multipoint mode catalysis biomass gasifying machine | |
| CN109456802A (en) | Biomass double fluidized-bed gas making device | |
| CN1279145C (en) | Device for preparing coal gas by using fluffy biomass raw material | |
| CN110437883B (en) | Integrated downdraft biomass gasification device and method | |
| CN101251265A (en) | Biomass gasification stoves with multiple feed inlet | |
| WO2013140418A1 (en) | Multi-condition thermochemical gas reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120411 Termination date: 20190630 |