CN104087342A - Biomass gasification furnace capable of decoking by utilizing furnace body sandwich structure - Google Patents
Biomass gasification furnace capable of decoking by utilizing furnace body sandwich structure Download PDFInfo
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- CN104087342A CN104087342A CN201410373033.0A CN201410373033A CN104087342A CN 104087342 A CN104087342 A CN 104087342A CN 201410373033 A CN201410373033 A CN 201410373033A CN 104087342 A CN104087342 A CN 104087342A
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Abstract
The invention relates to a biomass gasification furnace capable of decoking by utilizing a furnace body sandwich structure, which comprises a drying layer, a pyrolysis layer, a reducing layer and an oxidizing layer, wherein the furnace body is provided with a feed port, a gasified medium inlet and a combustible gas outlet; and a fire grate is arranged in the furnace body. The biomass gasification furnace is characterized in that the furnace body is constructed as a sandwich structure with gasification channels; the gasification channels comprise a combustible gas channel and a gasified medium channel; one end of the combustible gas channel is communicated with the reducing layer, and the other end is communicated with the combustible gas outlet, so that the combustible gas generated in the furnace is forced to flow across the reducing layer and discharged; and tar in the combustible gas is further pyrolyzed by utilizing the high temperature of the reducing layer, thereby lowering the tar content. The biomass gasification furnace overcomes the defects in the traditional gasification furnace, effectively combines the advantages of the traditional gasification furnace, and solves the problems of high tar content in combustible gas and inconvenience for material addition in the up-draft gasification furnace and the problem of difficulty in gas intake in the bottom-feed gasification furnace. Besides, the channels are constructed by utilizing the furnace structure, thereby increasing the gas inlet/outlet flow rate and being beneficial to maintaining the stable reaction in the furnace.
Description
[technical field]
The present invention relates to biomass gasifying furnace, particularly a kind of biomass gasifying furnace that utilizes furnace sandwich structure decoking.
[background technology]
Gasifying biomass is the process that biomass is produced under anoxia condition to inflammable gas by destructive distillation, thermal chemical reaction.Process or the reactions such as that common biomass gasification process comprises is dry, pyrolysis (being called again cracking), oxidation, reduction.Gasifying biomass normally carries out in biomass gasifying furnace, therefore, gasifying biomass structure in the stove can be divided into drying layer (claiming again drying zone), pyrolytic layer (district), zone of oxidation (district), reducing zone (district) by gasification reaction process.Biomass material enters after vapourizing furnace, is heated and makes the moisture evaporation in raw material at drying layer, forms dry raw material and water vapor.The dry raw material of biomass moves down and enters pyrolytic layer, and volatile matter is separated out in large quantities from biomass, and remaining remaining charcoal.The volatile matter of separating out in pyrolytic layer mainly comprises water vapour, hydrogen, carbon monoxide, carbonic acid gas, methane, tar etc.The residuum charcoal of pyrolysis reacts and produces gasification gas at zone of oxidation and the gasifying medium being introduced into, and discharges a large amount of heat simultaneously, to support the carrying out of other each layer reaction.The temperature typical temperature of zone of oxidation can reach 1000～1300 degrees Celsius, and volatile matter is further degraded after this layer participates in burning.In reducing zone, there is no oxygen, the charcoal generation reduction reaction in products of combustion (as carbonic acid gas) and water vapour and the reducing zone generating in zone of oxidation, generates hydrogen and carbon monoxide etc.These gases and volatile matter have just formed can be for the inflammable gas of life production, has completed the process that solid biomass transforms to geseous fuel.The temperature of reducing zone is conventionally higher, approximately 900 degrees Celsius.Wherein, gasification reaction mainly carries out in zone of oxidation and reducing zone, therefore zone of oxidation and reducing zone general name gasification zone, and pyrolytic layer and drying layer are generically and collectively referred to as fuel area in preparation.
Conventional biomass gasifying furnace divides and can be divided into fixed bed and the large class of fluidized-bed two by structure formation now.The gasification furnace structure form of fixed bed mainly comprises updraft type vapourizing furnace, down-draft type gasifying furnace, horizontal type vapourizing furnace, happy formula vapourizing furnace etc.Wherein, horizontal type and happy formula vapourizing furnace are because its inherent defect is less in commercial kitchen area application.And updraft type and down-draft type gasifying furnace are the two large class vapourizing furnaces of comparatively commonly using.
As shown in Figure 1, the material of updraft type vapourizing furnace drops into from furnace roof, and gasifying medium enters zone of oxidation from bottom of furnace body and participates in gasification reaction, the gas that reaction produces flows from bottom to top, inflammable gas outlet by top is discharged, and its exhaust and convenient, does not need powerful extraction equipment to bleed.And because drying layer has certain filteration to inflammable gas, in the inflammable gas that this mode is come out of the stove, ash oontent is few.But because material drops into from top to bottom, inflammable gas is discharged from bottom to top, and vapourizing furnace requires strictly furnace sealing, and therefore comparatively inconvenience of its filling is more strict to the Structural Design Requirement of dog-house.Meanwhile, the tar producing due to pyrolytic layer, without the further pyrolysis of gasification zone, causes the coal-tar middle oil too high levels of inflammable gas of output.
As shown in Figure 2, the material of down-draft type gasifying furnace drops into from furnace roof, and the gas that reaction produces flows from top to bottom, is discharged by the gas outlet of lower portion of furnace body.In stove, be divided into drying layer, pyrolytic layer, zone of oxidation, reducing zone from top to bottom.Because the direction that feeds intake is consistent with gas discharge direction, the filling of therefore can uncapping at any time, and the tar that pyrolytic layer produces can, through the further pyrolysis of gasification zone, therefore can reduce the tar content in output inflammable gas greatly.But because the natural direction of hot-fluid is from bottom to top, and the direction that gas is come out of the stove is from top to bottom, therefore extracts inflammable gas out need to expend larger power, and the inflammable gas of coming out of the stove contains more ash content.In addition,, because gasification zone temperature is higher, therefore its inflammable gas temperature of coming out of the stove is higher, need water to carry out it cooling, and also higher to the thermotolerance requirement of extraction equipment, therefore, though its inflammable gas tar content of coming out of the stove is lower, gets gas and has certain difficulty.
Generally speaking, existing updraft type and down-draft type gasifying furnace respectively have relative merits, still need further improvement, and the tar content that especially updraft type vapourizing furnace is come out of the stove is high, not only causes the loss of tar contained energy, and directly discharge can cause serious Environment pollution.
[summary of the invention]
The present invention is intended to address the above problem, and a kind of biomass gasifying furnace that utilizes furnace sandwich structure decoking is provided.
For addressing the above problem, the invention provides a kind of biomass gasifying furnace that utilizes furnace sandwich structure decoking, it comprises the body of heater that is provided with reaction chamber, described reaction chamber is divided into drying layer, pyrolytic layer, reducing zone and zone of oxidation, on described body of heater, be provided with sealing and can open the dog-house feeding intake, gasifying medium entrance and gas outlet, in body of heater, be provided with fire grate, it is characterized in that, described body of heater is configured to have the sandwich structure of gasification channel, described gasification channel comprises the blast tube of overflowing for inflammable gas in stove, one end of this blast tube and reducing zone connect, the other end connects with described gas outlet, described blast tube makes the inflammable gas generating in body of heater be forced to the reducing zone of flowing through, make the tar that is mingled with in inflammable gas through the high temperature of reducing zone and fallen by pyrolysis.
In the time feeding intake in body of heater, described blast tube forms the gap that can overflow for inflammable gas under the natural packing of material with body of heater internal interval.
Described body of heater comprises inner the first body of heater and the second body of heater mutually connecting, and described the second body of heater is sheathed on middle part or the middle and lower part of the first body of heater, has the sandwich structure of blast tube between this first body of heater and the second sidewall of the furnace body described in forming.
Described drying layer and pyrolytic layer are located in the first body of heater successively, be provided with described dog-house at the top of this first body of heater, described reducing zone and zone of oxidation are located in described the second body of heater successively, are respectively equipped with described gas outlet and gasification medium inlet on the sidewall of this second body of heater.
Described gasification channel comprises and can feed the gasifying medium passage to zone of oxidation for gasifying medium, described body of heater comprises inner the first body of heater, the second body of heater and the 3rd body of heater mutually connecting, described the second body of heater is sheathed on middle part or the middle and lower part of the first body of heater, described the 3rd body of heater is sheathed on middle part or the middle and lower part of the second body of heater, between described the first body of heater and the second sidewall of the furnace body, form described gasifying medium passage, between described the second body of heater and the 3rd sidewall of the furnace body, form described blast tube.
Described drying layer and pyrolytic layer are located in the first body of heater successively, be provided with described dog-house at the top of this first body of heater, described zone of oxidation is located in the second body of heater, middle and upper part or top at this second body of heater are provided with described gasifying medium entrance, described reducing zone is located in the 3rd body of heater, is provided with described gas outlet on the sidewall of the 3rd body of heater.
Described body of heater comprises inner the first body of heater and the second body of heater mutually connecting, in described the first body of heater, be divided into drying layer, pyrolytic layer, reducing zone and zone of oxidation from top to bottom, described the second body of heater is located in the first body of heater, the lower ending opening of this second body of heater, it is arranged in described reducing zone, the top of this second body of heater connects and is connected with gas outlet through connecting pipe, is provided with described dog-house at the top of described the first body of heater.
In described body of heater, be provided with the first dividing plate, described the first dividing plate and sidewall of the furnace body interval and enclose the cavity of a lower ending opening, the lower ending opening of this cavity is arranged in described reducing zone, this cavity forms described blast tube, on the sidewall of the furnace body relative with described the first dividing plate, is provided with described gas outlet.
Described gasification channel comprises and can feed the gasifying medium passage to zone of oxidation for gasifying medium, in described body of heater, be provided with second partition, described second partition and sidewall of the furnace body interval and enclose described gasifying medium passage are provided with described gasifying medium entrance on the sidewall of the furnace body relative with described second partition.
Described fire grate is located at the middle and lower part in body of heater, is provided with mucking machine in the bottom of described fire grate, at the inner bottom part of described body of heater, the water of mucking machine described in height submergence is housed, and the water in body of heater connects with the pond of being located at outside body of heater by the communicating aperture of being located on sidewall of the furnace body.
Useful contribution of the present invention is, it efficiently solves the problems referred to above.The present invention is by becoming to have the sandwich structure of gasification channel by structure of furnace body, and the opening of blast tube and reducing zone are connected, thereby can force furnace gas to be forced to flow through reducing zone and discharge, thereby can make the further pyrolysis through gasification zone of tar that pyrolytic layer produces, greatly reduce the tar content of the inflammable gas of coming out of the stove.Compared to existing technology, the present invention has the following advantages in the present invention:
1, tar, through the high temperature pyrolysis of reducing zone, not only can greatly reduce the tar content in the inflammable gas of coming out of the stove, and can effectively utilize the contained energy of tar, and reduce the pollution that tar causes bad border.
2, the inflammable gas in stove of the present invention is forced to flow through reducing zone and discharges from blast tube, and blast tube and drying layer and pyrolytic layer are separately, because reducing zone temperature is higher, it is high that its inflammable gas of coming out of the stove carries heat, it can make full use of material in the further process furnace of its entrained heat in the time flowing through blast tube, increases the degree of pyrolysis of tar, improve pyrolysis effect, and reduce the temperature of the inflammable gas of coming out of the stove.
3, traditional vapourizing furnace utilizes pipeline turnover gas, and the circulation of gasifying medium and inflammable gas is limited to the symmetry of diameter and the body of heater internal gas flow of pipeline, easily causes the too high problem of local temperature, and causes local gas flow velocity excessive.And the present invention utilizes furnace sandwich structure blast tube and gasification medium channel, it is than conventional pipelines, the present invention can increase the sectional area of gas access way, thereby improves input and the input speed of gasifying medium, and improves output flow and the output speed of output inflammable gas.And the raising of gas flow and flow velocity not only can reduce furnace pressure and local gas flow rate, and be conducive to the stability of internal-response.
4, gas outlet of the present invention and blast tube connect, and therefore, gas outlet can be arranged on sidewall of the furnace body arbitrarily, and does not need must be arranged on body of heater top as traditional updraft type vapourizing furnace, does not also need must be arranged on bottom of furnace body as down-draft type gasifying furnace.The present invention can arrange arbitrarily gas outlet and get gas, and it has broken through the limitation of traditional biomass vapourizing furnace on gas outlet arranges.
5, material of the present invention is from dog-house drops in stove, solid accumulation is on fire grate, utilize the feature of solid accumulation and blast tube is isolated, material is thrown in discharging with inflammable gas is to carry out in two spaces that mutually isolate, therefore than traditional updraft type vapourizing furnace, filling of the present invention is convenient.
6, body of heater of the present invention is airtight, gasifying medium has pressure of air supply while passing in stove, and furnace gas high temperature forms hot pressing, under pressure of air supply and hot pressing function, inflammable gas can be discharged from blast tube naturally, it does not need extra exhaust equipment or only needs very low power exhaust equipment, and it is compared and traditional down-draft type gasifying furnace, the invention solves from reducing zone and gets gas difficulty, the problem high to extraction equipment requirement.
7, fluid-tight structure is arranged in vapourizing furnace of the present invention bottom, and when ash discharge, it not only can play complete sealing function, and can cool furnace charcoal, and stove charcoal is while falling in water, and the water vapour of evaporation can also be further used as the gasifying medium of reaction in furnace.
Always say and it, the present invention has overcome the shortcoming of traditional updraft type and down-draft type gasifying furnace, and effectively combine both advantage, favourablely solve the updraft type vapourizing furnace problem that inflammable gas tar content is high, filling is inconvenient of coming out of the stove, and efficiently solved down-draft type gasifying furnace and get the problem of gas difficulty.Biomass gasifying furnace of the present invention has novel structure, get that gas is convenient, pyrolysis is effective, tar content is low, capacity usage ratio advantages of higher, should widely popularize.
[brief description of the drawings]
Fig. 1 is the theory structure schematic diagram of updraft type vapourizing furnace in prior art.
Fig. 2 is the theory structure schematic diagram of down-draft type gasifying furnace in prior art.
Fig. 3 is theory structure schematic diagram of the present invention.
Fig. 4 is the structural representation of embodiment 1.
Fig. 5 is the structural representation of embodiment 2.
Fig. 6 is the structural representation of embodiment 3.
Fig. 7 is the structural representation of embodiment 4.
Fig. 8 is the structural representation of embodiment 5.
Wherein, body of heater 10, the first body of heater 101, the second body of heater 102, the 3rd body of heater 103, the first dividing plate 104, second partition 105, dog-house 11, gasifying medium entrance 12, gas outlet 13, fire grate 14, blast tube 15, gasifying medium passage 16, connecting pipe 17, communicating aperture 18, air supply duct 19, reaction chamber 20, mucking machine 30, pond 40, gas blower 50.
[embodiment]
The following example is to further explanation of the present invention and supplements, the present invention is not constituted any limitation.
As shown in Fig. 3～Fig. 8, the biomass gasifying furnace that utilizes furnace sandwich structure decoking of the present invention comprises body of heater 10, in body of heater 10, be provided with reaction chamber 20, on body of heater 10, be provided with dog-house 11, gasifying medium entrance 12, gas outlet 13, in body of heater 10, be provided with fire grate 14, be provided with ash exhauster in body of heater 10 bottoms.Described reaction chamber 20 can be divided into drying layer, pyrolytic layer, reducing zone and zone of oxidation by reaction process.It should be noted that, between described drying layer, pyrolytic layer, reducing zone and zone of oxidation, may there is no obvious distinguishing limit, and its non-physical hierarchical structure, it is the virtual hierarchical structure that defines out according to the reaction in stove, it belongs to common practise and the conventional appellation of the sector.Described dog-house 11 is for adding biomass material, and it can be opened and feeds intake and can close, and it can play good sealing effectiveness while closing.Described dog-house 11 can adopt known structure.Described gasifying medium entrance 12, for pass into gasifying medium in stove, makes gasifying medium participate in reaction in zone of oxidation.In the situation that following examples are not specified, gasifying medium entrance 12 is located at fire grate 14 belows conventionally, and it connects gas blower 50 by air supply duct 19, and air supply duct 19 can stretch in stove, it exports just to zone of oxidation, thereby gasifying medium directly can be fed to zone of oxidation.Described gasifying medium adds according to reaction needed, and it can be each known gasifying medium, as air.Described ash exhauster can be with reference to known features, in the present invention, for strengthening the stopping property of body of heater 10, described ash exhauster is fluid-tight structure: body of heater 10 bottoms are fixed on ground, body of heater 10 bottoms are provided with mucking machine 30, body of heater 10 inner bottom part tanks have a certain amount of water, mucking machine 30 described in the height submergence of water.Body of heater 10 bottom sidewalls are provided with communicating aperture 18, and the water in body of heater 10 is communicated with the water of being located at the pond 40 outside body of heater 10.When by mucking machine 30 deslagging, the water in stove still can play good sealing function, thus the stopping property while strengthening deslagging.In addition, the stove charcoal of high temperature is fallen into not only can play cooling effect in water, and the water vapour producing can also be used as gasifying medium, for reaction in furnace.
Main main points of the present invention are, body of heater 10 is configured with to the sandwich structure of gasification channel, one end and the reducing zone of the blast tube 15 of output inflammable gas are connected, the other end connects with described gas outlet 13, thereby make furnace gas be forced through reducing zone and make at high temperature pyrolysis of tar, to reduce the tar content in the inflammable gas of coming out of the stove.Based on this principle, can set out multiple concrete body of heater 10 structures, below describe its concrete structure in detail with specific embodiment:
Embodiment 1
As shown in Figure 4, described body of heater 10 comprises the first body of heater 101 and the second body of heater 102.Described the first body of heater 101 lower ending openings, the second body of heater 102 upper end open, and the radius size of the second body of heater 102 or cross-sectional dimension are greater than the first body of heater 101 sizes.The second body of heater 102 is set in middle part or the middle and lower part of the first body of heater 101, and it is inner connects mutually, between sidewall separately, thereby just formed the sandwich structure with blast tube 15.The first body of heater 101 and the second body of heater 102 can be one-body molded, can be also that discrete parts are tightly connected integral by known method.Be provided with described dog-house 11 at the top of the first body of heater 101.Described fire grate 14 is located in the second body of heater 102, and it can be known Automatic grate 14.Described drying layer, pyrolytic layer are located in the first body of heater 101 from top to bottom.Described reducing zone and zone of oxidation are located in the second body of heater 102 from top to bottom, and are positioned at described fire grate 14 tops.Described gas outlet 13 is located on described the second body of heater 102 sidewalls, and its height is higher than reducing zone place level height.In the present embodiment, it is located in the upper portion side wall of the second body of heater 102, and in other embodiment, it can be located at the top of the second body of heater 102.
In the time that biomass material drops into from dog-house 11, solid accumulation is on fire grate 14 and by inner isolated and form the gap that can overflow for combustible gas to described blast tube 15 and the first body of heater 101, make described blast tube 15 can be used to get gas.It should be noted that, described isolation not refers to the isolation of complete stopping property, and it is relatively directly to connect.Described body of heater 10 integral sealings are good, because gas blower 50 is when sending into gasifying medium in body of heater 10, it has certain blast, and in stove, temperature is higher, gas temperature that reaction generates is high and form certain hot pressing, under blast and hot pressing function, the two ends of blast tube 15 form pressure reduction, thereby make furnace gas naturally flow to unique outlet---blast tube 15, make furnace gas be forced to flow through reducing zone and discharge from blast tube 15, reduce the use of extraction equipment under hot environment, reduce and get gas difficulty.Because reducing zone temperature is high, the tar (normally being produced by pyrolytic layer) that furnace gas is mingled with just can be in reducing zone pyrolysis, change into the inflammable gas having use value, thereby both brought into play the energy value of tar, can reduce again the tar content of coming out of the stove in inflammable gas.In addition,, when inflammable gas is discharged from blast tube 15, its entrained heat is also radiation-curable to drying layer and pyrolytic layer, further improves pyrolysis effect.
Embodiment 2
As shown in Figure 5, the body of heater 10 of the present embodiment comprises inner the first body of heater 101, the second body of heater 102, the 3rd body of heater 103 mutually connecting.The first body of heater 101 lower ending openings, the equal opening in two ends up and down of the second body of heater 102, it is sheathed on middle part or the middle and lower part of the first body of heater 101.The upper end open of the 3rd body of heater 103, it is sheathed on middle part or the middle and lower part of the second body of heater 102.The first body of heater 101, the second body of heater 102, the 3rd body of heater 103 are sheathed and form and have the sandwich structure of gasification channel successively, wherein, form gasifying medium passage 16 between the first body of heater 101 and the sidewall of the second body of heater 102, and gasifying medium passes into thus to zone of oxidation.Between the second body of heater 102 and the sidewall of the 3rd body of heater 103, form blast tube 15, inflammable gas is discharged thus.The first body of heater 101, the second body of heater 102 and the 3rd body of heater 103 can be one-body molded, also can be formed by connecting by discrete parts one.Described dog-house 11 is located at the top of the first body of heater 101, and drying layer and pyrolytic layer are located in the first body of heater 101 from top to bottom.Middle and upper part or the top of the second body of heater 102 is located in described gasifying medium outlet, in the second body of heater 102, is provided with zone of oxidation.Described gas outlet 13 is located on the sidewall of the 3rd body of heater 103, and fire grate 14 is located in the 3rd body of heater 103.The top of fire grate 14 is reducing zone.The former reference example 1 of specific works of the present embodiment.
Embodiment 3
As shown in Figure 6, the body of heater 10 of the present embodiment comprises the first body of heater 101 and the second body of heater 102.The first body of heater 101 is stopping property body of heater 10, is divided into drying layer, pyrolytic layer, reducing zone and zone of oxidation in it from top to bottom.The body of heater 10 that the second body of heater 102 is upper and lower both ends open, it is located in the first body of heater 101, and its lower ending opening is arranged in reducing zone, and its upper end open connects through connecting pipe 17 and gas outlet 13.Described gas outlet 13 can be located on the sidewall of arbitrary height of the first body of heater 101.Fire grate 14 is located in the first body of heater 101, is positioned at zone of oxidation below.Dog-house 11 is located at the top of the first body of heater 101, and gasifying medium entrance 12 is located at the below of fire grate 14, and it sends into gasifying medium by stretching to the air supply duct 19 in body of heater 10 in stove.The former reference example 1 of specific works of the present embodiment.
Embodiment 4
As shown in Figure 7, the body of heater 10 of the present embodiment is single body of heater 10, is divided into drying layer, pyrolytic layer, reducing zone and zone of oxidation in stove from top to bottom.In this body of heater 10, be provided with the first dividing plate 104, this first dividing plate 104 encloses the cavity of a lower ending opening with body of heater 10 sidewall spacers, and the lower ending opening of this cavity is arranged in reducing zone, and forms the blast tube 15 of discharging inflammable gas.On body of heater 10 sidewalls relative with the first dividing plate 104, be provided with gas outlet 13.Dog-house 11 is located at the top of body of heater 10, and fire grate 14 is located in body of heater 10, and is positioned at zone of oxidation below.Gasifying medium entrance 12 is located at zone of oxidation below, and it is connected gas blower 50 and sent into gasifying medium to zone of oxidation by air supply duct 19.The former reference example 1 of specific works of the present embodiment.
Embodiment 5
Body of heater 10 structures of the present embodiment are with embodiment 4, difference is, as shown in Figure 8, in body of heater 10, be also provided with second partition 105, this second partition 105 encloses the lower ending opening gasifying medium that supplies with body of heater 10 sidewall spacers passes into the gasifying medium passage 16 to described zone of oxidation, and described gasifying medium entrance 12 is located on the body of heater relative with second partition 105 10 sidewalls.The former reference example 1 of specific works of the present embodiment.
By this, just form the biomass gasifying furnace that utilizes furnace sandwich structure decoking of the present invention, utilized the sandwich structure of body of heater self, just can effectively remove the tar in inflammable gas, and be quite convenient to get gas and reinforced.Although the present invention is disclosed by above embodiment, scope of the present invention is not limited to this, is not departing under the condition of the present invention's design, and the similar or equivalent structure that above each member can be understood with affiliated technical field personnel is replaced.
Claims (10)
1. one kind is utilized the biomass gasifying furnace of furnace sandwich structure decoking, it comprises the body of heater (10) that is provided with reaction chamber (20), described reaction chamber (20) is divided into drying layer, pyrolytic layer, reducing zone and zone of oxidation, on described body of heater (10), be provided with sealing and can open the dog-house (11) feeding intake, gasifying medium entrance (12) and gas outlet (13), in body of heater (10), be provided with fire grate (14), it is characterized in that, described body of heater (10) is configured to have the sandwich structure of gasification channel, described gasification channel comprises the blast tube (15) of overflowing for inflammable gas in stove, one end of this blast tube (15) and reducing zone connect, the other end connects with described gas outlet (13), described blast tube (15) makes the inflammable gas generating in body of heater (10) be forced to the reducing zone of flowing through, make the tar that is mingled with in inflammable gas through the high temperature of reducing zone and fallen by pyrolysis.
2. the biomass gasifying furnace that utilizes furnace sandwich structure decoking as claimed in claim 1, it is characterized in that, in the time feeding intake in body of heater (10), described blast tube (15) forms the gap that can overflow for inflammable gas under the natural packing of material with body of heater (10) internal interval.
3. the biomass gasifying furnace that utilizes furnace sandwich structure decoking as claimed in claim 2, it is characterized in that, described body of heater (10) comprises inner the first body of heater (101) and the second body of heater (102) mutually connecting, described the second body of heater (102) is sheathed on middle part or the middle and lower part of the first body of heater (101), has the sandwich structure of blast tube (15) between this first body of heater (101) and the second body of heater (102) sidewall described in forming.
4. the biomass gasifying furnace that utilizes furnace sandwich structure decoking as claimed in claim 3, it is characterized in that, described drying layer and pyrolytic layer are located in the first body of heater (101) successively, be provided with described dog-house (11) at the top of this first body of heater (101), described reducing zone and zone of oxidation are located in described the second body of heater (102) successively, are respectively equipped with described gas outlet (13) and gasification medium inlet (12) on the sidewall of this second body of heater (102).
5. the biomass gasifying furnace that utilizes furnace sandwich structure decoking as claimed in claim 2, it is characterized in that, described gasification channel comprises and can feed the gasifying medium passage (16) to zone of oxidation for gasifying medium, described body of heater (10) comprises inner the first body of heater (101) mutually connecting, the second body of heater (102) and the 3rd body of heater (103), described the second body of heater (102) is sheathed on middle part or the middle and lower part of the first body of heater (101), described the 3rd body of heater (103) is sheathed on middle part or the middle and lower part of the second body of heater (102), between described the first body of heater (101) and the second body of heater (102) sidewall, form described gasifying medium passage (16), between described the second body of heater (102) and the 3rd body of heater (103) sidewall, form described blast tube (15).
6. the biomass gasifying furnace that utilizes furnace sandwich structure decoking as claimed in claim 5, it is characterized in that, described drying layer and pyrolytic layer are located in the first body of heater (101) successively, be provided with described dog-house (11) at the top of this first body of heater (101), described zone of oxidation is located in the second body of heater (102), middle and upper part or top at this second body of heater (102) are provided with described gasifying medium entrance (12), described reducing zone is located in the 3rd body of heater (103), on the sidewall of the 3rd body of heater (103), be provided with described gas outlet (13).
7. the biomass gasifying furnace that utilizes furnace sandwich structure decoking as claimed in claim 2, it is characterized in that, described body of heater (10) comprises inner the first body of heater (101) and the second body of heater (102) mutually connecting, in described the first body of heater (101), be divided into drying layer from top to bottom, pyrolytic layer, reducing zone and zone of oxidation, described the second body of heater (102) is located in the first body of heater (101), the lower ending opening of this second body of heater (102), it is arranged in described reducing zone, the top of this second body of heater (102) connects and is connected with gas outlet (13) through connecting pipe (17), be provided with described dog-house (11) at the top of described the first body of heater (101).
8. the biomass gasifying furnace that utilizes furnace sandwich structure decoking as claimed in claim 2, it is characterized in that, in described body of heater (10), be provided with the first dividing plate (104), described the first dividing plate (104) encloses the cavity of a lower ending opening with body of heater (10) sidewall spacers, the lower ending opening of this cavity is arranged in described reducing zone, this cavity forms described blast tube (15), on body of heater (10) sidewall relative with described the first dividing plate (104), is provided with described gas outlet (13).
9. the biomass gasifying furnace that utilizes furnace sandwich structure decoking as claimed in claim 8, it is characterized in that, described gasification channel comprises and can feed the gasifying medium passage (16) to zone of oxidation for gasifying medium, in described body of heater (10), be provided with second partition (105), described second partition (105) encloses described gasifying medium passage (16) with body of heater (10) sidewall spacers, on body of heater (10) sidewall relative with described second partition (105), is provided with described gasifying medium entrance (12).
10. the biomass gasifying furnace that utilizes furnace sandwich structure decoking as described in arbitrary of claim 1～9, it is characterized in that, described fire grate (14) is located at the middle and lower part in body of heater (10), be provided with mucking machine (30) in the bottom of described fire grate (14), at the inner bottom part of described body of heater (10), the water of mucking machine (30) described in height submergence is housed, the water in body of heater (10) connects by communicating aperture (18) pond (40) outer with being located at body of heater (10) of being located on body of heater (10) sidewall.
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| CN201410373033.0A CN104087342B (en) | 2014-07-31 | 2014-07-31 | The biomass gasifying furnace devoked using furnace sandwich structure |
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| CN201410373033.0A CN104087342B (en) | 2014-07-31 | 2014-07-31 | The biomass gasifying furnace devoked using furnace sandwich structure |
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| CN107312570A (en) * | 2017-08-08 | 2017-11-03 | 龙志威 | Biomass gasifying furnace |
| CN108048136A (en) * | 2018-01-19 | 2018-05-18 | 陈斌 | A kind of biogas generating means |
| CN108424778A (en) * | 2018-05-14 | 2018-08-21 | 山东省化工研究院 | Gas-solid reaction device and the method for carrying out solid waste processing |
| CN110511786A (en) * | 2019-07-26 | 2019-11-29 | 周昊 | A kind of staged air distribution two-part pyrolysis gasification furnace |
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| CN115232650A (en) * | 2022-07-07 | 2022-10-25 | 重庆科技学院 | Biomass pyrolysis gasification device |
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| CN110511786A (en) * | 2019-07-26 | 2019-11-29 | 周昊 | A kind of staged air distribution two-part pyrolysis gasification furnace |
| CN112920856A (en) * | 2019-12-06 | 2021-06-08 | 西安航天源动力工程有限公司 | Coal gasification to produce lean CH4Method and system for coal gas and naphtha co-production and system for coal gasification ammonia synthesis and naphtha co-production |
| CN115232650A (en) * | 2022-07-07 | 2022-10-25 | 重庆科技学院 | Biomass pyrolysis gasification device |
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