CN208414331U - A kind of fixed bed slag gasification furnace handling biomass fuel - Google Patents

A kind of fixed bed slag gasification furnace handling biomass fuel Download PDF

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Publication number
CN208414331U
CN208414331U CN201820526547.9U CN201820526547U CN208414331U CN 208414331 U CN208414331 U CN 208414331U CN 201820526547 U CN201820526547 U CN 201820526547U CN 208414331 U CN208414331 U CN 208414331U
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gasification furnace
area
annular space
inner cylinder
fixed bed
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傅敏燕
丁烙勇
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Zemak Shanghai Environmental Protection Energy Technology Co ltd
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Shanghai Mindac Machinery & Equipment Co Ltd
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Abstract

The utility model provides a kind of fixed bed slag gasification furnace for handling biomass fuel, and the fixed bed slag gasification furnace includes feed opening, bottom plate, agitating device, inner cylinder, outer cylinder, air intlet pipe, isolation board, gas exit, gasifying agent nozzle and slag discharge port.The utility model is by being transformed structure in fixed bed slag gasification furnace, the removing of biomass fugitive constituent is completed using the lasting destructive distillation of annular space dry distillation area strengthened destructive distillation and continue dry distillation area, and part has been carried out to the dirt and/or oil that separate and collect and has recycled destructive distillation, make it possible to the gasification for preferably adapting to the biological substance shaped granule of high-volatile content.

Description

A kind of fixed bed slag gasification furnace handling biomass fuel
Technical field
The utility model belongs to gasification of biomass field, is related to a kind of fixed bed slag gasification for handling biomass fuel The biomass of furnace more particularly to a kind of pair of high-volatile strengthen the fixed bed slag gasification of the processing biomass fuel of destructive distillation Furnace.
Background technique
Currently, the fossil energy caused by the industrialization development Minerals fuel is increasingly depleted and environmental problem is increasingly tight Weight, for biomass as the world's fourth largest energy for being only second to coal, petroleum and natural gas, having can the high efficiency low cost concentration sun It can, mitigate greenhouse gases and noxious gas emission, be readily converted to conventional fuel and the potentially useful amount of global resources is huge etc. Advantage is a kind of quite ideal clean reproducible energy in sustainable development.
The utilization of biomass mainly utilizes materialization switch technology, wherein with biomass power generation by waste combustion, fermentation producing methane etc. Based on exploitation.Gasification furnace is broadly divided into fixed-bed gasification furnace, fluidized-bed gasification furnace and airflow bed gasification furnace etc., is mainly used in coal Chemical field.
Since the fixation carbon content of biomass is very low, volatile matter content is high, ash content is low, due to poor fluidity etc., uses The existing fixed bed slag gasification furnace (fixed bed as described in Fig. 1 and CN 105038858A with cloth coal agitator device Slag gasification furnace, because its dry distillation area is shorter) it will lead to gasified bio-matter particulate material production of synthetic gas and oil product and can't adapt to it The problems such as volatile content is too high and the entrainment of crude product gas dust is serious, uncontrollable.Simultaneously as existing fixed bed is molten The dry distillation area of slag gasification furnace is shorter, and heat-exchange time is short in furnace, and combustion zone and gasification zone can gasify and fire because of fugitive constituent height Burn it is insufficient, make generate unstripped gas temperature it is not high, be also further deteriorated to the destructive distillation of biomass, and then make raw gas temperature mistake It is low；Once and only part is burnt and gasification in gasification furnace, will lead to bias current, raw gas temperature drift and entrainment dust is tight Weight influences the effect that upstream device operated normally and be separated from the water oil and/or dirt.
Utility model content
The biomass type fuel of high-volatile, low fixed carbon, dust folder are not suitable for for existing fixed bed slag gasification furnace The problems such as band is serious, and destructive distillation is insufficient, and oil productivity is low, it is molten that the utility model provides a kind of fixed bed for handling biomass fuel Slag gasification furnace.The utility model utilizes the strong of annular space dry distillation area by being transformed to fixed bed slag gasification furnace structure in the stove Change destructive distillation and continue the lasting destructive distillation of dry distillation area and complete the removing of biomass fugitive constituent, and to the dirt that separates and collects and/or oil into It has gone and has partially recycled destructive distillation, made it possible to the gasification for preferably adapting to the biological substance shaped granule of high-volatile content.
For this purpose, the utility model uses following technical scheme:
The utility model provides a kind of fixed bed slag gasification furnace for handling biomass fuel, which is characterized in that described Fixed bed slag gasification furnace includes that feed opening, bottom plate, agitating device, inner cylinder, outer cylinder, air intlet pipe, isolation board, product gas go out Mouth pipe, gasifying agent nozzle and slag discharge port；
Wherein, feed opening is arranged in top of gasification furnace, and slag discharge port is arranged in gasification furnace bottom；Bottom is arranged in gasification furnace internal upper part Plate, the region above bottom plate form material buffer area, and blanking port is provided on bottom plate, and agitating device, stirring is arranged in top of gasification furnace Device is passed down through bottom plate；The outer cylinder for setting the inner cylinder with top plate in gasification furnace and being placed on outside inner cylinder；During region in inner cylinder is Empty circulating-area constitutes annular space between inner barrel and outer barrel, and annular space is from top to bottom followed successively by annular space dry section, annular space dry distillation area and air Combustion zone, inner barrel and outer barrel are equipped at the corresponding region in annular space dry distillation area independently aperture, air burning area from gasification furnace The air intlet pipe in outer cylinder is protruded into outside；Between the outer cylinder bottom and gasification stove internal wall be equipped with isolation board, isolation board, outer cylinder, Region constitutes product gas pooling zone, the gasification furnace furnace wall at product gas pooling zone between gasification furnace middle and upper part inner wall and bottom plate On open up product gas outlet pipe；
Gasification furnace inner region below the inner barrel and outer barrel is from top to bottom followed successively by lasting dry distillation area, gasification zone, burning Area and slag area；The gasification furnace furnace wall of the combustion zone is equipped with gasifying agent nozzle.
It is used as the preferred technical solution of the utility model below, but not as the limit of technical solution provided by the utility model System, by the following technical programs, can preferably reach and realize the technical purpose and beneficial effect of the utility model.
As the preferred technical solution of the utility model, the bottom plate includes the first inclined ring connecting with gasification stove internal wall Shape bottom plate, second coupled with agitating device tilt annular base plate and are connected to the first inclination annular base plate and the second inclination ring-type The connecting bottom board for being provided with blanking port between bottom plate；Wherein, the blanking port being provided on the connecting bottom board is fixed blanking port, institute Number >=2 of fixed blanking port are stated, fixed blanking port is material buffer with gasification furnace setting substantially symmetrical about its central axis, fixed blanking port The lowest point in area.
As the preferred technical solution of the utility model, the agitating device is set to top of gasification furnace cental axial position, Agitating device includes agitating shaft and rotation blanking port, and agitating shaft is passed down through bottom plate and connects rotation blanking port；Rotate blanking port Annular space between inner barrel and outer barrel is corresponding；It is corresponding with the blanking port on bottom plate to rotate blanking port；The top plate of the inner cylinder with stir The agitating shaft connection in device is mixed, the top plate of inner cylinder is in cone.
As the preferred technical solution of the utility model, the top plate of the inner cylinder couples with agitating device；Inner barrel and outer barrel Between the annular space area that constitutes be 0.45 times~0.55 times of gasification furnace cross-sectional area；Outer cylinder is fixed on gasification by fixation kit On furnace, the diameter of outer cylinder bottom is greater than the diameter on top.
As the preferred technical solution of the utility model, the air intlet pipe protrudes into the distance in outer cylinder less than outer cylinder bottom Semidiameter between portion and outer cylinder top；Air intlet pipe tilts down, and the angle α between the gasification furnace cross section of place is 0~8 °；The quantity of air intlet pipe is 3 times~4 times of gasification furnace internal diameter；Air intlet pipe is equal on the gasification furnace cross section of place Even arranged distribution.
As the preferred technical solution of the utility model, the percent opening in inner cylinder middle and lower part region is 15%~25%, The percent opening in outer cylinder middle and lower part region is 2%~8%；The aperture of aperture is less than the aperture of aperture on inner cylinder on outer cylinder；Inner cylinder exists The aperture gross area of annular space dry distillation area corresponding region is 0.9 times~1.2 times of inner cylinder base area；Outer cylinder is in annular space dry distillation area pair Answer the aperture gross area in region for 0.20 times~0.30 times of inner cylinder base area；The annular space area constituted between inner barrel and outer barrel It is 2.0 times~3.0 times of inner cylinder base area；The annular space area constituted between inner barrel and outer barrel bottom is inner cylinder base area 2.5 times~3.5 times.
As the preferred technical solution of the utility model, dust-extraction unit is equipped at the top of the product gas pooling zone；Dedusting dress Built-in baffle plate in setting, dust-extraction unit are three face inlet ducts, and baffle plate is arranged in the bottom surface of the dust-extraction unit and two sides, The gas outlet of dust-extraction unit is connected with product gas outlet pipe.
As the preferred technical solution of the utility model, dust-extraction unit and product gas outlet pipe are respectively provided with 2；Dust-extraction unit The baffling that the dust fall mouth of the baffle plate of two sides setting is arranged in the bottom end and diagonally downward of two sides, dust-extraction unit bottom surface The dust fall mouth of plate bottom surface both side edge diagonally downward.
As the preferred technical solution of the utility model, ash port is equipped in the bottom of the isolation board；The ash port Place is equipped with balance plate, passes through the balance plate and is equipped with shaft, and shaft is fixed on isolation board, turns balance plate with shaft axis It is dynamic；Balance plate upper end is equipped with balanced body, is miter between the isolation board on balance plate upper end and shaft, balance plate lower end with turn It is miter between isolation board under axis, and two miters are downward in the same direction.
As the preferred technical solution of the utility model, the height in the material buffer area is 0.8 times of gasification furnace internal diameter ~1.5 times；The height of the annular space dry section is 0.65 times~0.75 times of gasification furnace internal diameter；The height of the annular space dry distillation area It is 0.65 times~0.75 times of gasification furnace internal diameter；The height in the air burning area is 0.25 times~the 0.35 of gasification furnace internal diameter Times；The height for continuing dry distillation area is 0.5 times~0.8 times of gasification furnace internal diameter；The height of the gasification zone is in gasification furnace 1 times of diameter~1.5 times；Height in the combustion zone above gasifying agent nozzle is 0.2 times~0.5 times of gasification furnace internal diameter, gas Height below agent nozzle is 0.1 times~0.2 times of gasification furnace internal diameter；The height of the slag area is gasification furnace internal diameter 0.3 times~0.4 times.
Compared with prior art, the utility model has the following beneficial effects:
The utility model is added inner barrel and outer barrel, will be fixed by being transformed to structure in fixed bed slag gasification furnace It is divided into annular space dry section, annular space dry distillation area, air burning area and lasting dry distillation area in bed slag gasification furnace, by being passed through air combustion The means such as burning, segmentation destructive distillation and improvement heat transfer enhance destructive distillation, so that its biological substance shaped granule for adapting to high-volatile content Gasification.Meanwhile it being produced by the dust-extraction unit of aperture, product gas pooling zone that inner barrel and outer barrel is arranged and mechanical ash port to thick Product gas carries out the separation of oil and/or dirt, circulation destructive distillation (and gasification), dust when very good solution high volatile gasification of biomass Entrainment is serious, even blocking products gas outlet the problem of.
Fixed bed slag gasification furnace described in the utility model can increase substantially the utilization rate of biomass fuel, keep its cold Product gas efficiency is improved to 70%, and the thermal efficiency is higher than 85%, and the consumption of biomass fuel can in separate unit fixed bed slag gasification furnace Reach 800t/d or more, produced crude product gas calorific value height (up to 3500kCal/Nm3), and a large amount of biomass oil products of by-product.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of fixed bed slag gasification furnace described in the utility model comparative example 1；
Fig. 2 is the structural schematic diagram of the fixed bed slag gasification furnace of processing biomass fuel described in the utility model；
Fig. 3 is the structural schematic diagram of fixed bed slag gasification furnace insole board described in the utility model embodiment 1；
Fig. 4 is partition plate structure schematic diagram in fixed bed slag gasification furnace described in the utility model embodiment 1；
Fig. 5 is the ash port schematic diagram in fixed bed slag gasification furnace described in the utility model embodiment 1 on isolation board；
Fig. 6 is the distribution schematic diagram of fixed bed slag gasification furnace air inlet pipe described in the utility model embodiment 1；
Fig. 7 is dust-extraction unit structure front view in fixed bed slag gasification furnace described in the utility model embodiment 1；
Fig. 8 is the face the A cross-sectional view of dust-extraction unit in fixed bed slag gasification furnace described in the utility model embodiment 1；
Fig. 9 is the B-section schematic diagram of dust-extraction unit in fixed bed slag gasification furnace described in the utility model embodiment 1；
Figure 10 is the face the C view (i.e. left view) of dust-extraction unit in Fig. 9；
Figure 11 is inner cylinder aperture schematic diagram in fixed bed slag gasification furnace described in the utility model embodiment 1；
Figure 12 is outer cylinder aperture schematic diagram in fixed bed slag gasification furnace described in the utility model embodiment 1；
Wherein, 1- feed opening, 2- air intlet pipe, 3- gasifying agent nozzle, 4- product gas outlet pipe, 5- slag discharge port, 6- blanking port, 7- rotate blanking port, 8- dust-extraction unit, 9- reinforcing rib, 10- isolation board, 11- inner cylinder, 12- outer cylinder, 13- balance Plate, 14- balanced body, 15- ash port, 16- baffle plate, 17- inner cylinder aperture, 18- outer cylinder aperture, 19- gasification furnace, 20- material are slow Rush area, 21- annular space dry section, 22- annular space dry distillation area, 23- air burning area, 24- continues dry distillation area, the gasification zone 25-, 26- combustion Burning area, the slag area 27-, 28- product gas pooling zone, 29- hollow circulation area, 30- bottom plate, 301- first tilt annular base plate, 302- second tilts annular base plate, 303- connecting plate, 304- third weld seam, the first weld seam of 305-, the second weld seam of 306-, 81- reality Plate, 83- opening, 85- oil and/or dirt outlet, the 4th weld seam of 86-, 87- hang plate.
Specific embodiment
For the utility model is better described, it is easy to understand the technical solution of the utility model, below to the utility model It is further described.But following embodiments is only the simple example of the utility model, does not represent or limits and is originally practical Novel rights protection scope, scope of protection of the utility model are subject to claims.
Specific embodiment of the present invention part provides a kind of fixed bed slag gasification furnace for handling biomass fuel, As shown in Fig. 2, the fixed bed slag gasification furnace includes feed opening 1, bottom plate 30, agitating device, inner cylinder 11, outer cylinder 12, air Inlet tube 2, isolation board 10, product gas outlet pipe 4, gasifying agent nozzle 3 and slag discharge port 5；
Wherein, feed opening 1 is set at the top of gasification furnace 19, and slag discharge port 5 is arranged in 19 bottom of gasification furnace；On in gasification furnace 19 Bottom plate 30 is arranged in portion, and the region of 30 top of bottom plate forms material buffer area 20, blanking port 6 is provided on bottom plate 30, and gasification furnace 19 pushes up Agitating device is arranged in portion, and agitating device is passed down through bottom plate 30；The inner cylinder 11 with top plate is set in gasification furnace 19 and is placed on inner cylinder Outer cylinder 12 outside 11；Region in inner cylinder 11 is hollow circulation area 29, annular space is constituted between inner cylinder 11 and outer cylinder 12, annular space is by upper Annular space dry section 21, annular space dry distillation area 22 and air burning area 23 are followed successively by under, inner cylinder 11 and outer cylinder 12 are in annular space dry distillation area The independently aperture of 22 corresponding regions is equipped with the air intlet protruded into outer cylinder 12 outside gasification furnace 19 at air burning area 23 Pipe 2；Be equipped with isolation board 10 between 12 bottom of outer cylinder and 19 inner wall of gasification furnace, isolation board 10, outer cylinder 12, in gasification furnace 19 on Region constitutes product gas pooling zone 28 between portion's inner wall and bottom plate 30, on 19 furnace wall of gasification furnace at product gas pooling zone 28 Open up product gas outlet pipe 4；
19 inner region of gasification furnace of 12 lower section of the inner cylinder 11 and outer cylinder is from top to bottom followed successively by lasting dry distillation area 24, gasification Area 25, combustion zone 26 and slag area 27；19 furnace wall of gasification furnace of the combustion zone 26 is equipped with gasifying agent nozzle 3.
The utility model enhances destructive distillation by being passed through air burning, segmentation destructive distillation and improving the means such as heat transfer, so that its Adapt to the gasification of the biomass molding fuel of high-volatile content.In the utility model, come from combustion zone 26 and gasification zone 25 Unstripped gas to the partially carbonized biomass fuel of downlink carry out continue destructive distillation, it is ensured that will in biomass fuel be up to 50wt% The fugitive constituent destructive distillation of~80wt% comes out (segmentation destructive distillation and improvement heat transfer)；Unstripped gas a part of rising after lasting destructive distillation Heating destructive distillation (strengthening destructive distillation one) is carried out to the material of annular space dry distillation area 22 by the material gap of 22 lower part of annular space dry distillation area, separately A part carries out heating destructive distillation to the material of 22 middle and upper part of annular space dry distillation area by the aperture of 11 middle and lower part of inner cylinder；Meanwhile passing through The air inlet duct 2 for being evenly arranged on annular space sprays into air in 22 lower part of annular space dry distillation area as heat source (combustion heat supplying), further by force Change the destructive distillation (strengthen destructive distillation two and improve heat transfer) of annular space dry distillation area 22.By the air intake control for adjusting air inlet duct 2 Combustion reaction processed, and air inlet duct 2 is slightly tilted down, with the speed for inhibiting hot charge gas to rise and by annular space destructive distillation The hot charge tolerance of 22 bottom of area, to further enhance destructive distillation effect (strengthening destructive distillation three).The biggish material full of biomass Buffer area 20, bottom plate and agitating device form the inhibiting effect to ascending air, while 12 middle and lower part perforated area of outer cylinder is remote Less than 11 middle part perforated area of inner cylinder and annular space void area, annular space dry distillation area 22 and annular space dry section 21 are further enhanced Destructive distillation and drying effect (strengthening destructive distillation four).
In the utility model, the drying of biomass is the hot gas using the rising of annular space dry distillation area 22 in annular space dry section 21 It carries out, wherein annular space of the unstripped gas risen by 21 top of annular space dry section full of biomass, the material full of biomass are slow The resistance limitation of area 20, the coal dropping port 6 full of biomass, the transitional storehouse full of biomass and the lock hopper full of biomass is rushed, greatly Part returns to gap through outer cylinder 12 and flows into product gas pooling zone 28, at the same additionally aid the oil in removing crude product gas and/or Dirt.
In the utility model, the heat treatment to unstripped gas is the process to cool down again that first heats up, in lasting dry distillation area 24 Partially carbonized biomass exchange heat and be cooled to less than 600 DEG C to it；In air burning area 23, to it when partial raw gas burns It heats up (temperature rise is less than 200 DEG C), the biomass of annular space dry distillation area 22 cools down to it by heat exchange, the biomass of annular space dry section 21 Further cooled down by heat exchange to it, finally control crude product temperature degree at 300 DEG C~400 DEG C, is convenient for fuel-displaced and produce gas.
In gasification furnace 19 described in the utility model, when partial raw gas passes through the aperture of 11 middle and lower part of inner cylinder, part is separated Oil and/or dirt；Product gas separates part oil and/or dirt when passing through the smaller aperture of 12 middle and lower part of outer cylinder.Further , the height of the product gas pooling zone 28 of gasification furnace 19 described in the utility model is the raw gas pooling zone height of the prior art 7 times~9 times, i.e. gas phase separating effect is well very much；Also, the product gas in product gas pooling zone 28 is removed in dust-extraction unit 8 Fall most oil and/or dirt, the oil and/or dirt of dust-extraction unit 8 and the oil in product gas pooling zone 28 and/or dirt is collected in On the isolation board 10 of 28 lower section of product gas pooling zone, lasting dry distillation area 24 is fallen into through ash port 15, further destructive distillation is decomposed, even Gasification generates part light oil and possible product gas.As it can be seen that fixed bed slag gasification furnace described in the utility model can be returned effectively It receives and handles the oil and/or dirt in product gas, and further increase treatment effeciency.
In the utility model, the material buffer area 20 is by top of gasification furnace, gasification stove internal wall and to be provided with blanking port 6 The region formed between bottom plate 30.The material buffer area 20 is not only biomass fuel (especially biomass molding fuel) Gasified raw material play the role of storage (such as about can for gasification storage three lock biomass fuels, it is not limited to This), and by the blanking port 6 of setting, it both ensure that the pan feeding of biomass fuel, and also ensured produce thick to the heat of possible uplink Product gas is inhibited.
In the utility model, the fixation of the inner cylinder 11 and outer cylinder 12 can use various ways, typical but not limitation Property example have: inner cylinder 11 and outer cylinder 12 can be attached fixation using screen, and 11 bottom end of inner cylinder can be than 12 bottom end of outer cylinder Slightly higher, i.e., screen can be tilted a certain angle upwards in gasification furnace section, then the screen of 12 bottom of inner cylinder 11 and outer cylinder be to It is interior acclivitous, it can contribute to the fixation of inner cylinder 11 and outer cylinder 12.
It is used as the preferred technical solution of the utility model below, but not as the limit of technical solution provided by the utility model System, by the following technical programs, can preferably reach and realize the technical purpose and beneficial effect of the utility model.
As the preferred technical solution of the utility model, the bottom plate 30 includes that first connect with 19 inner wall of gasification furnace inclines Oblique annular base plate 301, second coupled with agitating device tilt annular base plate 302 and are connected to the first inclination annular base plate 301 And second inclination annular base plate 302 between the connecting bottom board for being provided with blanking port 6.Further, the connecting bottom board can be by Muti-piece connecting plate 303 forms (such as 4 pieces of connecting plates 303).Wherein, the blanking port 6 being provided on the connecting bottom board is that fixation is fallen Material mouth, number >=2 of the fixed blanking port, such as 2,3,4,5 or 6 etc., it is not limited to cited Numerical value, other unlisted numerical value are equally applicable in the numberical range, preferably 4；Fixed blanking port is in gasification furnace 19 Mandrel is symmetrical arranged, and fixed blanking port is the lowest point in material buffer area 20.
Can more specifically there be following set-up mode, connection first tilts first between annular base plate 301 and connecting plate 303 Weld seam 305 is the lowest point of the first inclination annular base plate 301, between the second inclination annular base plate 302 of connection and connecting plate 303 Second weld seam 306 is the lowest point of the second inclination annular base plate 302, and the third weld seam 304 between each connecting plate 303 is to connect The highest point of fishplate bar.
Herein, described " first ", " second " and " third " is only the inclined floor and weldering from name to different parts Seam etc. distinguishes, and is not to its processing sequence or using the restriction of sequence etc..
In the utility model, the material in material buffer area 20 enters inner cylinder 11 and outer cylinder 12 by the blanking port on bottom plate 30 Between annular space, i.e. the position of blanking port 6 is corresponding with the annular space between inner cylinder 11 and outer cylinder 12.
As the preferred technical solution of the utility model, the agitating device is set to 19 top center axle position of gasification furnace It sets, agitating device includes agitating shaft and rotation blanking port 7, and agitating shaft is passed down through bottom plate 30 and connects rotation blanking port 7；Rotation Annular space between blanking port 7 and inner cylinder 11 and outer cylinder 12 is corresponding, so as to can enter inner cylinder from the material that rotation blanking port 7 is fallen Annular space between 11 and outer cylinder 12；The top plate of the inner cylinder 11 couples with the agitating shaft in agitating device, wherein agitating device Agitating shaft rotation fulcrum is fallen on the top plate of inner cylinder 11, and the top plate of inner cylinder 11, to facilitate gas backflow, makes gas in cone Entered in annular space by the aperture of inner cylinder 11.
As the preferred technical solution of the utility model, the top plate of the inner cylinder 11 couples with agitating device (for example, inner cylinder 11 top plate can be used thrust bearing with agitating device and couple, i.e. 11 top plate of inner cylinder is solely subjected to blender axis in agitating device The upward thrust in bottom end.)；The annular space area constituted between inner cylinder 11 and outer cylinder 12 is 0.45 times of 19 cross-sectional area of gasification furnace~ 0.55 times, such as 0.45 times, 0.47 times, 0.50 times, 0.53 times or 0.55 times etc., it is not limited to cited numerical value, it should Other unlisted numerical value are equally applicable in numberical range；Outer cylinder 12 is fixed on gasification furnace 19 (described solid by fixation kit Determine component to be not particularly limited, is this field routine fixation kit, if high temperature resistant outer cylinder 12 is fixed, such as this Outer cylinder 12 in utility model is by the common of the first inclined floor 301 in isolation board 10, several reinforcing ribs 9 and bottom plate 30 Effect is fixed), the diameter of 12 bottom of outer cylinder is greater than the diameter on top (for example, outer cylinder 12 includes upper and lower two cylinders, top The diameter of cylinder is less than the diameter of lower part cylinder, connects between two cylinders in transition, it is not limited to cited situation, It can also be in horn-like；It is to make the dirt under 12 overhead stream of outer cylinder not influence the air of the entrance of air intlet pipe 2 i.e. with oil Can).
In the utility model, the annular space area constituted between the inner cylinder 11 and outer cylinder 12 needs to control in certain proportion model In enclosing, it is unfavorable for steaming the most of volatile of biomass if annular space area is excessive, causes the insufficient of annular space destructive distillation, promote Lasting dry distillation area 24 is elongated, gasification zone 25 and combustion zone 26 are shortened, influence gasification efficiency and slag melting and molten slag bath it is good Property deslagging, or even cause gasification furnace abnormal running or parking.It can be by biomass in annular space dry distillation area 22 if annular space area is too small Excessive destructive distillation promotes to continue the shortening of dry distillation area 24, or even disappears, and gasification zone 25 and combustion zone 26 move up, due to 25 temperature of gasification zone Degree is high, directly can cause great thermal shock to inner cylinder 11, outer cylinder 12 and other internals or burn out internals, and then influences gasification furnace 19 normal operation, leads to disastershutdown when serious.
As the preferred technical solution of the utility model, the air intlet pipe 2 protrudes into the distance in outer cylinder 12 less than outer (its object is to flow down the annular space middle and upper part between inner cylinder 11 and outer cylinder 12 for semidiameter between 12 bottoms of cylinder and 12 top of outer cylinder Dirt and/or oil do not influence air intlet pipe 2 entrance air and/or high-temperature flue gas.)；Air intlet pipe 2 tilts down, and Angle α between 19 cross section of place gasification furnace is 0~8 °, such as 1 °, 2 °, 3 °, 4 °, 5 °, 6 °, 7 ° or 8 ° etc., but not It is only limitted to cited numerical value, other unlisted numerical value are equally applicable in the numberical range；The quantity of the air intlet pipe 2 For 3 times~4 times of gasification furnace internal diameter, such as 3 times, 3.2 times, 3.4 times, 3.6 times, 3.8 times or 4 times etc., it is not limited to institute The numerical value enumerated, other interior unlisted numerical value of the numberical range are equally applicable；Air intlet pipe 2 is transversal in place gasification furnace 19 It is evenly distributed on face.
In the utility model, the angle between air intlet pipe 2 and gasification furnace cross section is needed at an angle, if angle mistake Greatly, excessive inhibiting effect can be played to the coarse raw materials gas of rising, to influence to enter air combustion from 22 bottom of annular space dry distillation area The coarse raw materials tolerance for burning area 23 influences the coarse raw materials gas ratio into hollow circulation area 29 and annular space dry distillation area 22.Due to from sky The high-temperature air burning object or high-temperature flue gas that gas inlet pipe 2 enters can play certain inhibition to the high temperature coarse raw materials gas of rising and make With being passed through air capacity or the exhaust gas volumn in air burning area 23 by temperature detection cooperation in practical operation come adjustment member unstripped gas In the temperature rise in air burning area 23 and the destructive distillation effect of annular space dry distillation area 22.
As the preferred technical solution of the utility model, the percent opening in the 11 middle and lower part region of inner cylinder is 15%~ 25%, such as 15%, 17%, 19%, 21%, 23% or 25% etc., it is not limited to cited numerical value, the numberical range Other interior unlisted numerical value are equally applicable.Herein, described " middle and lower part " refers on inner cylinder 11 corresponding to annular space dry distillation area 22 Region, as shown in figure 11.The percent opening in the 12 middle and lower part region of outer cylinder be 2%~8%, such as 2%, 3%, 4%, 5%, 6%, 7% or 8% etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable. Herein, described " middle and lower part " refers to region corresponding to annular space dry distillation area 22 on outer cylinder 12, as shown in figure 12.Aperture on outer cylinder 12 Aperture be less than inner cylinder 11 on aperture aperture, it is therefore intended that on the one hand using annular space dry distillation area 22 material to rise unstripped gas The mink cell focus and/or dirt of middle carrying carry out primary filtration, on the other hand extend unstripped gas in the residence time of annular space dry distillation area 22, It creates conditions for abundant destructive distillation, while part retention is carried out to the oil and/or dirt carried in unstripped gas.Inner cylinder 11 is in annular space destructive distillation The aperture gross area of 22 corresponding region of area is 0.9 times~1.2 times of 11 base area of inner cylinder, such as 0.9 times, 0.95 times, 1.0 Again, 1.05 times, 1.1 times, 1.15 times or 1.2 times etc., it is not limited to cited numerical value, interior other of the numberical range are not arranged The numerical value of act is equally applicable.Herein, the aperture gross area refers to total hole area of all apertures opened up on inner cylinder 11.Outside The aperture gross area of the cylinder 12 in 22 corresponding region of annular space dry distillation area is 0.20 times~0.30 times of 11 base area of inner cylinder, such as 0.20 times, 0.21 times, 0.22 times, 0.23 times, 0.24 times, 0.25 times, 0.26 times, 0.27 times, 0.28 times, 0.29 times or 0.30 times Deng it is not limited to cited numerical value, other unlisted numerical value are equally applicable in the numberical range.Inner cylinder 11 and outer cylinder The annular space area constituted between 12 is 2.0 times~3.0 times of 11 base area of inner cylinder, such as 2.0 times, 2.2 times, 2.4 times, 2.6 Again, 2.8 times or 3.0 times etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally suitable With.Herein, the annular space area constituted between inner cylinder 11 and outer cylinder 12 refers to that inner cylinder 11 and 12 upper diameter smaller part of outer cylinder divide it Between annular space area.The annular space area constituted between 12 bottom of inner cylinder 11 and outer cylinder is 2.5 times~the 3.5 of 11 base area of inner cylinder Times, such as 2.5 times, 2.7 times, 3 times, 3.3 times or 3.5 times etc., it is not limited to cited numerical value, in the numberical range its His unlisted numerical value is equally applicable.Herein, the annular space area constituted between 12 bottom of inner cylinder 11 and outer cylinder refers to 11 He of inner cylinder Annular space area between 12 base diameter major part of outer cylinder.Since the diameter of 12 bottom of outer cylinder is greater than the diameter on top, therefore interior The annular space area constituted between the annular space area constituted and inner cylinder 11 and 12 bottom of outer cylinder between cylinder 11 and outer cylinder 12 is different.
In the utility model, the aperture on the inner cylinder 11 and outer cylinder 12 independently is circular hole or the shapes such as rectangular, but It is not limited in circle or rectangular, can is also other shapes, such as triangle, as long as meeting aforementioned percent opening.
In the utility model, the inner cylinder 11 is different with the total open area on outer cylinder 12, and need to respectively meet certain Total open area requirement, wherein the perforated area of 11 middle and lower part of inner cylinder is the following: (1) carrying out more to annular space dry distillation area 22 For sufficient destructive distillation, (2) destructive distillation of annular space dry distillation area 22 is adjusted according to the effect that destructive distillation acts on, and (3) are to part material The dirt and/or oil of gas carry out primary retention centrifugation；(4) unstripped gas risen through 11 bottom surface of inner cylinder is not even dry to dry section There is temperature influence in the material buffer area on dry area top, i.e. intake need to be controlled in a certain range.12 middle and lower part perforated area of outer cylinder Be the following: (1) air guide, (2) have certain retardation to the unstripped gas of annular space dry distillation area 22, and (3) are in unstripped gas The oil and/or dirt of carrying have second interception centrifugation (4) not generate reentrainment or reduction to the material of annular space dry distillation area 22 It is carried secretly.
Meanwhile the base area of the inner cylinder 11 and outer cylinder 12 is also required to meet certain ratio, its object is to reasonable Distribution enters the unstripped gas ratio in air burning area 23 and hollow circulation area 29, to be adjusted into the unstripped gas in air burning area 23 The pyrolysis temperature of amount and temperature rise and annular space dry distillation area 22.
As the preferred technical solution of the utility model, dust-extraction unit 8 is equipped at the top of the product gas pooling zone 28, with de- Except oil and/or dirt in crude product gas；Built-in baffle plate 16 in dust-extraction unit 8, dust-extraction unit 8 is three face inlet ducts, described to remove Baffle plate 16, i.e. bottom baffle plate and 2 side baffle plates is arranged in the bottom surface of dirt device 8 and two sides, i.e., gas is through dedusting The bottom surface of device 8, two sides baffle plate 16 after collect inside dust-extraction unit 8, dedusting fills 8 gas outlet and product gas goes out Mouth pipe 4 is connected.
In the utility model, 16 pairs of oil of baffle plate and/or dirt in dust-extraction unit 8 have the function of enrichment and separation, meeting Further oil smaller in product gas and/or dirt are separated, directly moved along baffle plate 16 to ash port 15, and falling (oil and/or dirt separated in the gas phase separation of product gas pooling zone 28 also can inclining because of isolation board 10 for the grey enrichment of mouth 15 It is tiltedly slowly enriched in ash port 15).When the quality of the oil of enrichment and/or dirt is more than the quality of balanced body 14, oil and/or dirt Lasting dry distillation area 24 can be fallen by stirring downwards for balance plate 13, directly progress destructive distillation is largely consumed, small part is by band Out, it is then separated again, is again introduced into lasting dry distillation area 24, repeatedly, unstripped gas or product gas can be carried secretly Oil and/or dirt are efficiently separated and are consumed.At the same time it can also improve air burning area by spraying into a greater amount of air 23 temperature improves this consumption ratio of oil and/or dirt.
As the preferred technical solution of the utility model, dust-extraction unit 8 and product gas outlet pipe 4 are respectively provided with 2；Dedusting dress The dust fall mouth of the baffle plate 16 of 8 two sides setting is set in the bottom end and diagonally downward of two sides, 8 bottom surface of dust-extraction unit is arranged Baffle plate 16 dust fall mouth bottom surface both side edge diagonally downward.
As the preferred technical solution of the utility model, ash port 15 is equipped with (more into one in the bottom of the isolation board 10 Step, ash port 15 is equipped in the lowest point of the isolation board 10.)；It is equipped with balance plate 13 at the ash port 15, passes through described Balance plate 13 is equipped with shaft, and shaft is fixed on isolation board 10, makes balance plate 13 with the rotation of shaft axis；13 upper end of balance plate is set There is a balanced body 14, be miter between the isolation board 10 on 13 upper end of balance plate and shaft, under 13 lower end of balance plate and shaft Isolation board 10 between be miter, and two miters in the same direction downwards.Gap between balance plate 13 and isolation board 10 is all very It is small.
Balance plate 13 described in the utility model is provided in after accumulating certain oil and/or dirt on isolation board 10, Oil and/or dirt quality i.e. on shaft lower part balance plate 13 are greater than the difference and shaft of balanced body 14 and shaft top and the bottom balance plate 13 When the oil and/or dirt on top accumulate quality sum, oil and/or dirt can drain down into gasification furnace 19 by balance plate 13.Balance The shape of plate 13 is not particularly limited, and is matched with 15 aperture of ash port, one example can are as follows: balance plate 13 is turning Axis side is semicircle, and the other side is trapezoidal.
As long as the balanced body 14 can make balance plate 13 maintain balance, there is no limit can be sphere to shape It is also possible to the structures such as cube, can also be hollow high temperature resistant object.
As the preferred technical solution of the utility model, the height in the material buffer area 20 is the 0.8 of gasification furnace internal diameter Times~1.5 times, such as 0.8 times, 0.9 times, 1 times, 1.1 times, 1.2 times, 1.3 times, 1.4 times or 1.5 times etc., it is not limited to institute The numerical value enumerated, other interior unlisted numerical value of the numberical range are equally applicable；The height of the annular space dry section 21 is gasification 0.65 times of furnace internal diameter~0.75 times, such as 0.65 times, 0.67 times, 0.7 times, 0.73 times or 0.75 times etc., it is not limited to Cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable；The height of the annular space dry distillation area 22 is gas 0.65 times~0.75 times for changing furnace internal diameter, such as 0.65 times, 0.67 times, 0.7 times, 0.73 times or 0.75 etc., it is not limited to Cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable；The height in the air burning area 23 is gas 0.25 times~0.35 times for changing furnace internal diameter, such as 0.25 times, 0.27 times, 0.3 times, 0.33 times or 0.35 times etc., but simultaneously not only limit It is equally applicable in other unlisted numerical value in cited numerical value, the numberical range；It is described continue dry distillation area 24 height be 0.5 times of 19 internal diameter of gasification furnace~0.8 times, such as 0.5 times, 0.55 times, 0.6 times, 0.65 times, 0.7 times, 0.75 times or 0.8 times Deng it is not limited to cited numerical value, other unlisted numerical value are equally applicable in the numberical range；The gasification zone 25 Height be 1 times~1.5 times of 19 internal diameter of gasification furnace, such as 1 times, 1.1 times, 1.2 times, 1.3 times, 1.4 times or 1.5 times etc., but It is not limited in cited numerical value, other unlisted numerical value are equally applicable in the numberical range；Gas in the combustion zone 26 The height of the top of agent nozzle 3 is 0.2 times~0.5 times of 19 internal diameter of gasification furnace, such as 0.2 times, 0.3 times, 0.4 times or 0.5 times Deng it is not limited to cited numerical value, other unlisted numerical value are equally applicable in the numberical range；Gasifying agent nozzle 3 The height of lower section is 0.1 times~0.2 times of 19 internal diameter of gasification furnace, such as 0.1 times, 0.12 times, 0.14 times, 0.16 times, 0.18 times Or 0.2 times, it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range are equally applicable；It is described molten The height in slag area 27 is 0.3 times~0.4 times of 19 internal diameter of gasification furnace, such as 0.3 times, 0.32 times, 0.34 times, 0.36 times, 0.38 Times or 0.4 times etc., it is not limited to cited numerical value, other unlisted numerical value are equally applicable in the numberical range.
In the utility model, the height setting in material buffer area 20 in a certain range, is risen to possible Unstripped gas carries out heat exchange cooling, second is that storing in gasification furnace to material, prevents material from not supplying or because biomass is short Time overfire causes larger gap, or even phenomena such as bridge formation.
Specific embodiment of the present invention part provides the processing method of above-mentioned fixed bed slag gasification furnace, the side Method the following steps are included:
(a) biomass fuel that volatile content is 50wt%~80wt%, the life are added into material buffer area 20 Biomass fuel enters between inner cylinder 11 and outer cylinder 12, is successively continued after dry, annular space destructive distillation and air burning by annular space Destructive distillation, after the material of generation is gasified and burnt downwards, the slag of formation collects in gasification furnace bottom, and gasification furnace is discharged 19；
(b) the gentle metaplasia of burning at unstripped gas upwards after continuing destructive distillation, be divided into two parts, a part enters air combustion It burns area 23 and provides heat after air burning for annular space destructive distillation and annular space destructive distillation is carried out to material into annular space dry distillation area 22, it is another Part enters 22 pairs of annular space dry distillation area by the aperture on inner cylinder 11 and enters material progress annular space destructive distillation, and the product gas of generation enters Product gas pooling zone 28, collection obtain product gas.
Wherein, in the biomass fuel fugitive constituent content can be 50wt%~80wt%, such as 50wt%, 52wt%, 54wt%, 56wt%, 58wt%, 60wt%, 62wt%, 64wt%, 66wt%, 68wt%, 70wt%, 72wt%, 74wt%, 76wt%, 78wt% or 80wt% etc., it is not limited to cited numerical value, interior other of the numberical range are not arranged The numerical value of act is equally applicable.
As the preferred technical solution of the utility model, biomass fuel described in step (a) is biomass molding fuel, Its for after drying and moulding low moisture, high-volatile granule materials.
Preferably, moisture content < 15wt% in step (a) biomass fuel, such as 14wt%, 12wt%, 10wt%, 8wt%, 6wt% or 4wt% etc., it is not limited to cited numerical value, other are unlisted in the numberical range Numerical value is equally applicable；Lower heat value be 3000kCal/kg~4000kCal/kg, such as 3000kCal/kg, 3300kCal/kg, 3500kCal/kg, 3700kCal/kg or 4000kCal/kg etc., it is not limited to cited numerical value, in the numberical range Other unlisted numerical value are equally applicable.Herein, moisture content is calculated on the basis of As-received；The content of fugitive constituent is It is calculated on the basis of empty butt.
Preferably, the dry temperature of step (a) annular space is 100 DEG C~350 DEG C, for example, 100 DEG C, 130 DEG C, 150 DEG C, 170 DEG C, 200 DEG C, 230 DEG C, 250 DEG C, 270 DEG C, 300 DEG C or 350 DEG C etc., it is not limited in cited numerical value, the numerical value model Other unlisted numerical value are equally applicable in enclosing.
Preferably, the temperature of step (a) the annular space destructive distillation be 350 DEG C~550 DEG C, such as 350 DEG C, 370 DEG C, 400 DEG C, 430 DEG C, 450 DEG C, 470 DEG C, 500 DEG C, 530 DEG C or 500 DEG C etc., it is not limited to cited numerical value, in the numberical range Other unlisted numerical value are equally applicable.
Preferably, the oxygen volume content of air is introduced in step (a) air burning, and to account for fixed bed slag gasification furnace total The 0%~10% of oxygen volume content, such as 1%, 3%, 5%, 6%, 7%, 8%, 9% or 10% etc., it is not limited to institute The numerical value enumerated, other interior unlisted numerical value of the numberical range are equally applicable.In the utility model, the air burning process The air capacity of middle introducing should not be excessive, if air capacity is excessive, one side can reduce the material gas quantity into air burning area；Separately On the one hand, excessively high to the temperature rise for the unstripped gas for entering air burning area, a possibility that increasing scaling loss internals, such as inner cylinder bottom end, outer Cylinder protruding portion etc.；Meanwhile air capacity it is larger when, the overfire of unstripped gas can be caused, cause the huge wave of in-furnace temperature, pressure It is dynamic, explosion accident can be caused when serious.
Preferably, air is sprayed by air intlet pipe 2 in step (a) air burning, and penetrating speed is 20m/s ~50m/s, such as 20m/s, 25m/s, 30m/s, 35m/s, 40m/s, 45m/s or 50m/s etc., it is not limited to cited Numerical value, other interior unlisted numerical value of the numberical range are equally applicable.
Preferably, the temperature of step (a) air burning be 800 DEG C~950 DEG C, such as 800 DEG C, 830 DEG C, 850 DEG C, 870 DEG C, 900 DEG C, 930 DEG C or 950 DEG C etc., it is not limited to cited numerical value, other are unlisted in the numberical range Numerical value is equally applicable.
In the utility model, the temperature of annular space dry distillation area 22 is adjusted by the burning in control air burning area 23, is annular space Destructive distillation provides heat, strengthens the destructive distillation of annular space dry distillation area 22.
Preferably, step (a) it is described continue destructive distillation temperature be 550 DEG C~900 DEG C, such as 550 DEG C, 600 DEG C, 650 DEG C, 700 DEG C, 750 DEG C, 800 DEG C, 850 DEG C or 900 DEG C etc., it is not limited to cited numerical value, in the numberical range, other are not The numerical value enumerated is equally applicable.
Preferably, the temperature of step (a) gasification be 900 DEG C~1400 DEG C, such as 900 DEG C, 1000 DEG C, 1100 DEG C, 1200 DEG C, 1300 DEG C or 1400 DEG C etc., it is not limited to cited numerical value, other interior unlisted numerical value of the numberical range It is equally applicable.
Preferably, the mean temperature of step (a) burning is 1400 DEG C of >, 2000 DEG C of the central area > of burning.
Preferably, the raw material that air combustion zone 23 carries out air burning in step (b) includes being upwardly into annular space dry distillation area 22 unstripped gas.
Preferably, the unstripped gas of rising and/or product gas are extracted out gasification furnace in step (b), in gasification furnace external firing It is passed through raw material of the air burning area 23 as air burning area 23 again afterwards.
Preferably, the raw material that air combustion zone 23 carries out air burning in step (b) includes the outer cigarette for after fuel combustion Gas.
In the utility model, carry out air burning fuel source can there are many, such as can be and be upwardly into annular space The unstripped gas of dry distillation area 22 can also will rise unstripped gas or crude product gas extracts gasification furnace out, by high-temperature flue gas after burning outside It is passed through air burning area 23, air burning area 23 directly can also be passed through by the outer flue gas for after fuel combustion, it can also be simultaneously Fuel source is provided using above-mentioned three kinds of modes.
Preferably, the product gas of generation described in step (b) enters product gas pooling zone 28, in 28 He of product gas pooling zone After oil and/or dirt in dust-extraction unit 8 in initial gross separation product gas, gasification furnace 19 is discharged.
Preferably, the unstripped gas of production described in step (b) pass through by isolated when the hole of inner cylinder 11 part it is oily and/or Dirt removes residue in product gas pooling zone 28 and dust-extraction unit 8 by isolating part oil and/or dirt when the hole of outer cylinder 12 Oil and/or dirt.
Preferably, the oil in product gas pooling zone 28 and dust-extraction unit 8 in the product gas of initial gross separation and/or dirt are collected In on isolation board 10, lasting dry distillation area 24 is fallen into through ash port 15, further progress destructive distillation is decomposed and gasification, generates part light oil With possible product gas.
As the preferred technical solution of the utility model, the described method comprises the following steps:
(a) biomass fuel that volatile content is 50wt%~80wt%, the biology are added into material buffer area Matter fuel enters between inner cylinder 11 and outer cylinder 12, and dry in 100 DEG C~350 DEG C progress annular spaces in annular space dry section 21, annular space is dry Material after dry enters annular space dry distillation area 22 in 350 DEG C~550 DEG C progress annular space destructive distillation, enters back into air burning area 23 and introduces Air burn at 800 DEG C~950 DEG C, the material after burning is downwardly into lasting dry distillation area 24 at 550 DEG C~900 DEG C It carries out after continuing destructive distillation, gasifies into gasification zone 25, after entering back into the burning of combustion zone 26, the slag of formation is in molten slag bath Collect, and gasification furnace 19 is discharged, wherein the mean temperature burnt is 1400 DEG C of >, 2000 DEG C of the central area > of burning, slag Pond temperature is 1250 DEG C~1400 DEG C；
(b) the gentle metaplasia of burning at unstripped gas be upwardly into lasting dry distillation area 24 after persistently destructive distillation, be divided into two parts, The unstripped gas that a part enters air burning area 23 after air burning for rising provides heat and entrance annular space dry distillation area 22 is right Material carries out annular space destructive distillation, and another part enters 22 pairs of annular space dry distillation area by the aperture on inner cylinder 11 and enters material progress annular space Destructive distillation, the product gas of generation enter product gas pooling zone 28, the initial gross separation product in product gas pooling zone 28 and dust-extraction unit 8 After oil and/or dirt in gas, collection obtains product gas；
Wherein, air burning area 23 carry out air burning raw material include the unstripped gas for being upwardly into annular space dry distillation area 22, Outer flue gas for after fuel combustion extracts the unstripped gas of rising and/or product gas out gasification furnace 19, fires outside gasification furnace 19 Raw material of the air burning area 23 as air burning area 23 is passed through after burning again；
The unstripped gas of production described in step (b) isolates part oil and/or dirt when passing through the hole by inner cylinder 11, pass through Isolated when the hole of outer cylinder 12 part oil and/or dirt, product gas pooling zone 28 and dust-extraction unit 8 remove it is remaining oil and/ Or dirt；Oil and/or dirt in product gas pooling zone 28 and dust-extraction unit 8 in the product gas of initial gross separation are collected in isolation board 10 On, lasting dry distillation area 24 is fallen into through ash port 15, further progress destructive distillation is decomposed and gasification.
The typical but non-limiting embodiment the following are the utility model:
Embodiment 1:
A kind of fixed bed slag gasification furnace for handling biomass fuel is present embodiments provided, as shown in Fig. 2, the fixation Bed slag gasification furnace includes feed opening 1, bottom plate 30, agitating device, inner cylinder 11, outer cylinder 12, air intlet pipe 2, isolation board 10, produces Product gas outlet 4, gasifying agent nozzle 3 and slag discharge port 5；
Wherein, feed opening 1 is set at the top of gasification furnace 19, and slag discharge port 5 is arranged in 19 bottom of gasification furnace；On in gasification furnace 19 Bottom plate 30 is arranged in portion, and the region of 30 top of bottom plate forms material buffer area 20, is provided with blanking port 6 on bottom plate 30, blanking port 6 is solid Determine blanking port, agitating device is arranged in 19 top center shaft position of gasification furnace；Inner cylinder 11 and set with top plate are set in gasification furnace 19 In the outer cylinder 12 outside inner cylinder 11；Region in inner cylinder 11 is hollow circulation area 29, and annular space, ring are constituted between inner cylinder 11 and outer cylinder 12 Gap is from top to bottom followed successively by annular space dry section 21, annular space dry distillation area 22 and air burning area 23, and inner cylinder 11 and outer cylinder 12 are in annular space The independently aperture of the corresponding region in dry distillation area 22 is equipped with the sky protruded into outer cylinder 12 outside gasification furnace 19 at air burning area 23 Gas inlet pipe 2；Isolation board 10, isolation board 10, outer cylinder 12, gasification furnace are equipped between 12 bottom of outer cylinder and 19 inner wall of gasification furnace Region constitutes product gas pooling zone 28, the gasification furnace 19 at product gas pooling zone 28 between 19 middle and upper part inner walls and bottom plate 30 Product gas gas outlet 4 is opened up on furnace wall；
19 inner region of gasification furnace of 12 lower section of the inner cylinder 11 and outer cylinder is from top to bottom followed successively by lasting dry distillation area 24, gasification Area 25, combustion zone 26 and slag area 27；19 furnace wall of gasification furnace of the combustion zone 26 is equipped with gasifying agent nozzle 3；
Wherein, as shown in figure 3, the bottom plate 30 include connect with gasification stove internal wall first inclination annular base plate 301, with Second inclination annular base plate 302 of agitating device connection tilts cyclic annular bottom with the first inclination annular base plate 301 and second is connected to The connecting bottom board for being provided with blanking port 6 between plate 302.The number of blanking port 6 is 2, and blanking port 6 is with 19 central axis pair of gasification furnace Claiming setting, connecting bottom board is made of 4 pieces of connecting plates 303, and the between the first inclination annular base plate 301 of connection and connecting plate 303 One weld seam 305 is the lowest point of the first inclination annular base plate 301, between the second inclination annular base plate 302 of connection and connecting plate 303 The second weld seam 306 be the second inclination annular base plate 302 lowest point, and the third weld seam 304 between each connecting plate 303 is The highest point of connecting plate.
The top plate of inner cylinder 11 couples in cone and with agitating device；Agitating device include agitating shaft and rotation blanking port 7, Agitating shaft is passed down through bottom plate 30 and connects rotation blanking port 7.
The internal diameter D of gasification furnace 19 is that 3600mm is provided with inner cylinder aperture 17 as shown in figure 11 on inner cylinder 11, inner cylinder 11 it is straight Diameter is 1600mm, the height not aperture of the height 6000mm of inner cylinder 11, top 2500mm, the height aperture of middle and lower part 2000mm, The diameter 20mm of inner cylinder aperture 17, axial upper two holes aperture distance 40mm, two hole aperture distance 39.25mm on circumference, inner cylinder 11 Perforated area on annular space dry distillation area 22 should be 1.0 times of inner cylinder base area, 0.40 times of annular space area between inner/outer tube.
As shown in figure 12, outer cylinder aperture 18, the diameter 3000mm of outer cylinder 12, height 6000mm, top are provided on outer cylinder 12 3000mm height not aperture, middle and lower part 1500mm height aperture, the diameter 10mm of outer cylinder aperture 18, axial upper two holes aperture distance 40mm, two hole aperture distance 39.25mm on circumference, perforated area of the outer cylinder 12 on annular space dry distillation area 22 should be inner cylinder bottom at this time 0.28 times of face area, 0.11 times of annular space area between inner/outer tube, inner cylinder 11 on annular space dry distillation area 22 perforated area 0.28 Times.
The common work that outer cylinder 12 passes through the first inclination annular base plate 301 in isolation board 10, several reinforcing ribs 9 and bottom plate 30 With being fixed；12 bottom of outer cylinder outwardly protrudes 200mm, and air intlet pipe 2 protrudes into 100mm in outer cylinder 12；Air intlet pipe 2 to Lower inclination, and the angle α between 19 cross section of place gasification furnace is 5 °；The quantity of air intlet pipe 2 is 12, such as Fig. 6 institute Show, it is evenly distributed on 19 cross section of place gasification furnace, along 19 circumference of gasification furnace every 30 ° of arranged for interval.
Dust-extraction unit 8 is equipped at the top of product gas pooling zone 28, the dust-extraction unit 8 is three face inlet ducts, the dedusting Baffle plate 16 is arranged in the bottom surface of device 8 and two sides.As shown in fig. 7,8 top of dust-extraction unit is closed solid plate 81, lower end There is opening 83, centre is the air inlet for being set to the baffle plate 16 of side；As shown in figure 8, the bottom of dust-extraction unit 8 from two to Under inclined baffle plate 16 constitute, two baffle plates 16 tilted down connect at the 4th weld seam 86, and are provided in bottom end Two oil and/or dirt outlet 85.Product gas flows through two baffle plates tilted down 16 from bottom to top, is enriched with and is separated Oil and/or dirt be discharged at lower end oil/dirt outlet 85, fall to ash port 15；As shown in Figures 9 and 10, dust-extraction unit 8 two sides Baffle plate 16 is mounted on the two sides of product gas outlet pipe 4, is equipped with hang plate 87 in 16 lower end of baffle plate of two sides, cooperates under two sides The outlet 83 at end is to be discharged the oil and/or dirt isolated.Product gas flows translateral baffle plate by 4 two sides of product gas outlet pipe 16, after exported by product gas outlet pipe 4, and be enriched with and the oil and/or dirt being separated are fallen on hang plate 87, exported 83 rows Out, it falls to ash port 15.
As illustrated in figures 4-5, the bottom lowest point of isolation board 10 is equipped with ash port 15, is equipped with balance plate 13 at ash port 15, It is equipped with shaft across the balance plate 13, shaft is fixed on isolation board 10, makes balance plate 13 with the rotation of shaft axis, balance plate 13 upper ends are hung with balanced body 14, balance to balance the of poor quality of shaft both sides balance plate 13, and as desired by setting The quality of body 14, which is more than that shaft both sides balance plate 13 is ropy, of poor quality controls the oil being subject to when balance plate 13 stirs downwards And/or the quality of dirt；The shaft can be pin shaft, and balanced body 30 can be roundlet ball, on 13 upper end of balance plate and shaft Isolation board 10 between be miter, be miter between the isolation board 10 under 13 lower end of balance plate and shaft, and two miters In the same direction downwards.
The height in the material buffer area 20 is 1.2 times of gasification furnace internal diameter, and the height of annular space dry section 21 is gasification furnace 0.7 times of internal diameter, the height of annular space dry distillation area 22 are 0.7 times of gasification furnace internal diameter, and the height in air burning area is in gasification furnace 0.27 times of diameter, the height for continuing dry distillation area 24 is 0.6 times of 19 internal diameter of gasification furnace, and the height of gasification zone 25 is in gasification furnace 19 1.3 times of diameter, the height of 3 top of gasifying agent nozzle is 0.35 times of 19 internal diameter of gasification furnace in combustion zone 26, under gasifying agent nozzle 3 The height of side is 0.15 times of 19 internal diameter of gasification furnace, and the height of slag area 27 is 0.35 times of 19 internal diameter of gasification furnace.
Using above-mentioned fixed bed slag gasification furnace handle biomass fuel, wherein the content of fugitive constituent be 50wt%~ 80wt%, moisture content < 15wt%, Lower heat value are 3000kCal/kg~4000kCal/kg, and processing method includes following Step:
(a) fixed bed slag gasification furnace is added in biomass fuel and enters material buffer area 20, travel further into inner cylinder Between 11 and outer cylinder 12, dry in 100 DEG C~350 DEG C progress annular spaces in annular space dry section 21, the material after annular space is dry enters Annular space dry distillation area 22 enters back into air burning area 23 and the air introduced at 800 DEG C in 350 DEG C~550 DEG C progress annular space destructive distillation ~950 DEG C burn, and the oxygen volume content that air is introduced in air burning accounts for the total oxygen volume content of fixed bed slag gasification furnace 0%~10%, the material after burning be downwardly into lasting dry distillation area 24 carried out at 550 DEG C~900 DEG C continue destructive distillation after, into Enter gasification zone 25 to gasify, after entering back into the burning of combustion zone 26, the slag of formation collects in molten slag bath, and gasification is discharged Furnace, wherein the mean temperature burnt be 1400 DEG C of >, 2000 DEG C of the central area > of burning, molten slag bath temperature be 1250 DEG C~ 1400℃；
(b) the gentle metaplasia of burning at unstripped gas be upwardly into lasting dry distillation area 24 after persistently destructive distillation, be divided into two parts, A part enters air burning area 23 and provides heat after air burning for annular space destructive distillation and enter annular space dry distillation area 22 to material Annular space destructive distillation is carried out, another part enters 22 pairs of annular space dry distillation area by the aperture on inner cylinder 11 to be done into material progress annular space It evaporates, the product gas of generation enters product gas pooling zone 28, after the oily dirt in product gas is separated in product gas pooling zone 28, collects Obtain product gas；
Wherein, air burning area 23 carry out air burning raw material include the unstripped gas for being upwardly into annular space dry distillation area 22, Outer flue gas for after fuel combustion extracts the unstripped gas of rising and/or product gas out gasification furnace 19, fires outside gasification furnace 19 Raw material of the air burning area 23 as air burning area 23 is passed through after burning again；
The unstripped gas of production described in step (b) isolates part oil and/or dirt when passing through the hole by inner cylinder 11, pass through Isolated when the hole of outer cylinder 12 part oil and/or dirt, product gas pooling zone 28 and dust-extraction unit 8 remove it is remaining oil and/ Or dirt；Oil and/or dirt in product gas pooling zone 28 and dust-extraction unit 8 in the product gas of initial gross separation are collected in isolation board 10 On, lasting dry distillation area 24 is fallen into through ash port 15, further progress destructive distillation is decomposed and gasification.
Embodiment 2:
Present embodiments provide a kind of fixed bed slag gasification furnace for handling biomass fuel, the fixed bed slag gasification The structure of furnace is referring to the structure in embodiment 1, difference: the number of blanking port 6 is 4, and the internal diameter D of gasification furnace 19 is 3600mm, 11 diameter 1400mm of inner cylinder, 17 opening diameter 20mm of inner cylinder aperture, axial upper two holes aperture distance 50mm, on circumference Two hole aperture distance 36.63mm, perforated area of the inner cylinder 11 on annular space dry distillation area 22 should be inner cylinder bottom area at this time 0.98 times, 0.4 times of annular space area between inner/outer tube.
Outer cylinder aperture 18 is provided on outer cylinder 12, the diameter 2600mm of outer cylinder 12, height 6000mm, top 3000mm height is not Aperture, middle and lower part 1500mm height aperture, the diameter 10mm of outer cylinder aperture 18, axial upper two holes aperture distance 44mm, on circumference Two hole aperture distance 43.36mm, perforated area of the outer cylinder 12 on annular space dry distillation area 22 should be inner cylinder base area at this time 0.26 times, 0.105 times of annular space area between inner/outer tube, inner cylinder 11 is 0.26 times of perforated area on annular space dry distillation area 22.
Biomass fuel is handled using above-mentioned fixed bed slag gasification furnace, treatment process in embodiment 1 referring to operating Journey.
Comparative example 1:
This comparative example provides a kind of fixed bed slag gasification furnace, as shown in Figure 1, it is conventional fixed bed in the prior art Slag gasification furnace is not provided with the structures, only one such as inner cylinder 11, outer cylinder 12, air intlet pipe 2 and isolation board 10 inside gasification furnace It is a to continue dry distillation area, continue to be dry section above dry distillation area, continues successively to include gasification zone and combustion zone, burning below dry distillation area Heating destructive distillation is carried out in material of the lasting dry distillation area to downlink when the high-temperature fuel gas uplink that area and gasification zone generate, in dry section Material is dried, drives the moisture in material out of, is enriched with later in product gas pooling zone, passes through single product gas outlet pipe Outflow.
Gasify the biomass of such high-volatile in the fixed bed slag gasification furnace of this comparative example, crude product temperature degree Be difficult to control, reason is: since lasting dry distillation area is shorter in the fixed bed slag gasification furnace, heat-exchange time is short in furnace, Combustion zone and gasification zone can gasify because fugitive constituent is high and burn insufficient, and the unstripped gas temperature of generation is not high, to biomass Destructive distillation be also further deteriorated, crude product temperature spend it is low, once and gasification furnace part burning and gasification preferably, will lead to Bias current, crude product gas temperature drift, and it is serious to carry dust secretly.
And it is possible to find out that fixed bed slag gasification furnace is only with the gas phase of product gas pooling zone described in comparative example 1 Space, to the gas solid separation that crude product gas has an effect bad, and because of the fluid oil containing particle very little in crude product gas Substance and its solid particle lateral enrichment in product gas outlet pipe, due to cannot effectively consume these enriched substances, enriched substance It will form reentrainment, it can blocking products gas outlet 4 when serious.Fixed bed slag gas in comparative example 1 and comparative example 1 Change furnace, the annual statistical average and analogue data of the separate unit slag gasification furnace in comparative example 1, oil production such as the following table 1:
The 1 jet coal analogue value of table and operating value
Project Unit The analogue value Operating value
Consumption of raw materials kg/h 42604 42270
Naphtha kg/h 309 333
Crude phenols kg/h 136 126
Middle oil kg/h 119 438
Tar kg/h 530 712
Lattice payment index Tarad, % 6 8.5
Oil productivity % 43 45
It is mutually authenticated by simulating with operating value, here it is apparent that the oil productivity of the slag gasification furnace in comparative example 1 It is not high, while can be seen that the goodness of fit of the analogue value and operating value is very high, i.e., the analogue value can reflect actual motion value.
Using the fixed bed slag gasification furnace gasified bio-matter particle in embodiment 1, analogue data such as the following table 2:
The 2 biomass analogue value of table
Project Unit The analogue value
Consumption of raw materials kg/h 42776
Naphtha kg/h 666
Crude phenols kg/h 368
Middle oil kg/h 3576
Tar kg/h 2583
It is pyrolyzed oil content Tarad, % 24
Oil productivity % 70
It can be seen from Table 2 that the reinforcing destructive distillation slag gasification furnace using the utility model can obtain higher oil-producing Rate, i.e. destructive distillation ratio more thoroughly, it can be seen that the reinforcing destructive distillation effect of the utility model is clearly.
Meanwhile using the fixed bed slag gasification furnace in embodiment 1 at high temperature under high pressure in raw gas oil and/or dirt into The preliminary separation of row, the translateral raw gas outlet outflow of raw gas after separation, avoids produced raw gas powder in comparative example 1 Dirt entrainment is serious, and strict control raw material is needed to carry the limitation of powder amount.
Comparative example 2:
This comparative example provides a kind of fixed bed slag gasification furnace for handling biomass fuel, the fixed bed slag gasification The structure of furnace is referring to the structure in embodiment 1, difference: being not provided with inner cylinder 11 in gasification furnace 19, an outer cylinder 12 is only arranged.
Using the biomass fuel in the fixed bed slag gasification furnace Processing Example 1.
In this comparative example, due to being not provided with inner cylinder 11, that is, in the dry distillation area design basis of former CN105038858A On increase dry distillation area height, increase air burning and to dirt and/or oil be partially separated and retain, mainstream effect reduce, To reduce the oil productivity of biomass to 50%~60%.
Comparative example 3:
This comparative example provides a kind of fixed bed slag gasification furnace for handling biomass fuel, the fixed bed slag gasification The structure of furnace is referring to the structure in embodiment 1, difference: the percent opening > 25% on inner cylinder 11, i.e. aperture on inner cylinder 11 Rate is excessive.
Using the biomass fuel in the fixed bed slag gasification furnace Processing Example 1, treatment process is referring to implementation Treatment process in example 1.
In this comparative example, in this comparative example, since the percent opening on inner cylinder 11 is excessive, annular space dry distillation area destructive distillation work can be weakened With, and lose to the adjustment effect and inner cylinder of destructive distillation to the dirt of partial raw gas and/or the crown_interception of oil, and then reduce biology The oil productivity of matter is to 60%~65%.
Comparative example 4:
This comparative example provides a kind of fixed bed slag gasification furnace for handling biomass fuel, the fixed bed slag gasification The structure of furnace is referring to the structure in embodiment 1, difference: the percent opening > 8% on outer cylinder 12, i.e. percent opening on outer cylinder 12 It is excessive.
Using the biomass fuel in the fixed bed slag gasification furnace Processing Example 1, treatment process is referring to implementation Treatment process in example 1.
In this comparative example, since the percent opening on outer cylinder 12 is excessive, it will lead to second interception failure, form reentrainment, Centrifugation of the product gas pooling zone to crude product gas is weakened, or even will increase band dirt and/or the oil mass in product gas, when serious Crude product gas outlet 4 is blocked, gasification furnace is caused to stop.
Comparative example 5:
This comparative example provides a kind of fixed bed slag gasification furnace for handling biomass fuel, the fixed bed slag gasification The structure of furnace is referring to the structure in embodiment 1, difference: 12 bottom of outer cylinder is not provided with air intlet pipe 2, i.e., without air Burning.
Using the biomass fuel in the fixed bed slag gasification furnace Processing Example 1, treatment process is referring to implementation Treatment process in example 1.
In this comparative example, since not set air intlet pipe 2 is without air burning, the destructive distillation of annular space dry distillation area will lead to Heat source is inadequate, weakens destructive distillation, or even because lead to it without a high proportion of volatile matter in enough heat destructive distillation Biomass The moisture and volatile matter of carrying enter gasification zone and combustion zone, reduce combustion zone central temperature, influence slag and benign deslagging, sternly Gasification furnace is caused to be unable to run when weight.
Comparative example 6:
This comparative example provides a kind of fixed bed slag gasification furnace for handling biomass fuel, the fixed bed slag gasification The structure of furnace is referring to the structure in embodiment 1, difference: product gas pooling zone 28 is not provided with dust-extraction unit 8, is only arranged one Product gas outlet pipe 4 is also not provided with ash port 15 on isolation board 10.
Using the biomass fuel in the fixed bed slag gasification furnace Processing Example 1, treatment process is referring to implementation Treatment process in example 1.
In this comparative example, due to not set dust-extraction unit 8 and ash port 15, it will lead to and largely carry biomass in product gas secretly Particle (dirt) and/or oil or even blocking products gas outlet 4, can not pass through one dust-extraction unit 8 of operation and corresponding product Gas outlet 4 or two dust-extraction units 8 and corresponding product gas outlet pipe 4 adjust the separation of oil and/or dirt in product gas Effect；Gasifier operation can not be maintained when product gas outlet pipe 4 blocks, greatly weaken gasification furnace to high volatile The adaptability of gasification of biomass, causes gasification furnace to be unable to run when serious.
The utility model be can be seen that with comparative example based on the above embodiments by gasifying in fixed bed slag gasification furnace Furnace structure is transformed, and adds inner barrel and outer barrel, will be divided into fixed bed slag gasification furnace annular space dry section, annular space dry distillation area, Air burning area and lasting dry distillation area enhance destructive distillation by being passed through air burning, segmentation destructive distillation and improving the means such as heat transfer, make Obtain the gasification of its biological substance shaped granule for adapting to high-volatile content；By the aperture in the inner barrel and outer barrel added, remove The means such as dirt device and ash port carry out the separation of oil and/or dirt to product gas, and circulation destructive distillation (and gasification) solves high volatilization The problem of gasification of biomass dust entrainment divided is serious, even blocking products gas exports.
Fixed bed slag gasification furnace described in the utility model can increase substantially the utilization rate of biomass fuel, keep its cold Product gas efficiency is improved to 70%, and the thermal efficiency is higher than 85%, and the consumption of biomass fuel can in separate unit fixed bed slag gasification furnace Reach 800t/d or more, produced crude product gas calorific value height (up to 3500kCal/Nm3), and a large amount of biomass oil products of by-product.
Applicant's statement, the utility model illustrate the detailed applications method of the utility model through the foregoing embodiment, but The utility model is not limited to above-mentioned detailed applications method, that is, does not mean that the utility model must rely on above-mentioned method detailed It could implement.It should be clear to those skilled in the art, any improvement to the utility model, produces to the utility model The equivalence replacement of product raw material and addition, concrete operations condition and the selection of mode of auxiliary element etc., all fall within the utility model Protection scope and the open scope within.

Claims (10)

1. a kind of fixed bed slag gasification furnace for handling biomass fuel, which is characterized in that the fixed bed slag gasification furnace packet Include feed opening, bottom plate, agitating device, inner cylinder, outer cylinder, air intlet pipe, isolation board, product gas outlet pipe, gasifying agent nozzle and Slag discharge port；
Wherein, feed opening is arranged in top of gasification furnace, and slag discharge port is arranged in gasification furnace bottom；Bottom plate is arranged in gasification furnace internal upper part, Region above bottom plate forms material buffer area, and blanking port is provided on bottom plate, and agitating device, agitating device is arranged in top of gasification furnace It is passed down through bottom plate；The outer cylinder for setting the inner cylinder with top plate in gasification furnace and being placed on outside inner cylinder；Region in inner cylinder is hollow ring Area is flowed, constitutes annular space between inner barrel and outer barrel, annular space is from top to bottom followed successively by annular space dry section, annular space dry distillation area and air burning Area, inner barrel and outer barrel are equipped with overhanging from gasification furnace at the corresponding region in annular space dry distillation area independently aperture, air burning area Enter the air intlet pipe in outer cylinder；Isolation board, isolation board, outer cylinder, gasification are equipped between the outer cylinder bottom and gasification stove internal wall Region constitutes product gas pooling zone between furnace middle and upper part inner wall and bottom plate, opens on the gasification furnace furnace wall at product gas pooling zone If product gas outlet pipe；
Gasification furnace inner region below the inner barrel and outer barrel be from top to bottom followed successively by lasting dry distillation area, gasification zone, combustion zone and Slag area；The gasification furnace furnace wall of the combustion zone is equipped with gasifying agent nozzle.
2. fixed bed slag gasification furnace according to claim 1, which is characterized in that the bottom plate includes and gasification stove internal wall First inclination annular base plate of connection, second coupled with agitating device tilt annular base plate and are connected to the first inclination ring-type bottom The connecting bottom board for being provided with blanking port between plate and the second inclination annular base plate；Wherein, the blanking being provided on the connecting bottom board Mouth is fixed blanking port, and blanking port is fixed with gasification furnace setting substantially symmetrical about its central axis in number >=2 of the fixed blanking port, Gu Determine the lowest point that blanking port is material buffer area.
3. fixed bed slag gasification furnace according to claim 1 or 2, which is characterized in that the agitating device is set to gas Change furnace roof portion cental axial position, agitating device includes agitating shaft and rotation blanking port, and agitating shaft is passed down through bottom plate and connects rotation Turn blanking port；The annular space rotated between blanking port and inner barrel and outer barrel is corresponding；It is corresponding with the blanking port on bottom plate to rotate blanking port； The top plate of the inner cylinder couples with the agitating shaft in agitating device, and the top plate of inner cylinder is in cone.
4. fixed bed slag gasification furnace according to claim 1 or 2, which is characterized in that the top plate of the inner cylinder and stirring Device connection；The annular space area constituted between inner barrel and outer barrel is 0.45 times~0.55 times of gasification furnace cross-sectional area；Outer cylinder is logical It crosses fixation kit to be fixed on gasification furnace, the diameter of outer cylinder bottom is greater than the diameter on top.
5. fixed bed slag gasification furnace according to claim 1 or 2, which is characterized in that the air intlet pipe protrudes into outer Distance in cylinder is less than the semidiameter between outer cylinder bottom and outer cylinder top；Air intlet pipe tilts down, and gasifies with place Angle α between furnace cross section is 0~8 °；The quantity of air intlet pipe is 3 times~4 times of gasification furnace internal diameter；Air intlet pipe It is evenly distributed on the gasification furnace cross section of place.
6. fixed bed slag gasification furnace according to claim 1 or 2, which is characterized in that inner cylinder middle and lower part region Percent opening is 15%~25%, and the percent opening in outer cylinder middle and lower part region is 2%~8%；The aperture of aperture is less than inner cylinder on outer cylinder The aperture of upper aperture；The aperture gross area of the inner cylinder in annular space dry distillation area corresponding region is 0.9 times~the 1.2 of inner cylinder base area Times；The aperture gross area of the outer cylinder in annular space dry distillation area corresponding region is 0.20 times~0.30 times of inner cylinder base area；Inner cylinder and The annular space area constituted between outer cylinder is 2.0 times~3.0 times of inner cylinder base area；The ring constituted between inner barrel and outer barrel bottom Gap area is 2.5 times~3.5 times of inner cylinder base area.
7. fixed bed slag gasification furnace according to claim 1 or 2, which is characterized in that at the top of the product gas pooling zone Equipped with dust-extraction unit；Built-in baffle plate in dust-extraction unit, dust-extraction unit be three face inlet ducts, the bottom surface of the dust-extraction unit and Baffle plate is arranged in two sides, and the gas outlet of dust-extraction unit is connected with product gas outlet pipe.
8. fixed bed slag gasification furnace according to claim 7, which is characterized in that dust-extraction unit and product gas outlet Guan Jun Setting 2；The dust fall mouth of the baffle plate of two sides of dust-extraction unit setting is filled in the bottom end and diagonally downward of two sides, dedusting Bottom set face setting baffle plate dust fall mouth bottom surface both side edge diagonally downward.
9. fixed bed slag gasification furnace according to claim 1 or 2, which is characterized in that set in the bottom of the isolation board There is ash port；It is equipped with balance plate at the ash port, passes through the balance plate and is equipped with shaft, shaft is fixed on isolation board, makes Balance plate is rotated by axis of shaft；Balance plate upper end is equipped with balanced body, is oblique between the isolation board on balance plate upper end and shaft Junction, is miter between the isolation board under balance plate lower end and shaft, and two miters are in the same direction downwards.
10. fixed bed slag gasification furnace according to claim 1 or 2, which is characterized in that the height in the material buffer area It is 0.8 times~1.5 times of gasification furnace internal diameter；The height of the annular space dry section is 0.65 times~0.75 times of gasification furnace internal diameter； The height of the annular space dry distillation area is 0.65 times~0.75 times of gasification furnace internal diameter；The height in the air burning area is gasification furnace 0.25 times of internal diameter~0.35 times；The height for continuing dry distillation area is 0.5 times~0.8 times of gasification furnace internal diameter；The gasification The height in area is 1 times~1.5 times of gasification furnace internal diameter；Height in the combustion zone above gasifying agent nozzle is gasification furnace internal diameter 0.2 times~0.5 times, the height below gasifying agent nozzle is 0.1 times~0.2 times of gasification furnace internal diameter；The height of the slag area Degree is 0.3 times~0.4 times of gasification furnace internal diameter.
CN201820526547.9U 2018-04-13 2018-04-13 A kind of fixed bed slag gasification furnace handling biomass fuel Active CN208414331U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108342208A (en) * 2018-04-13 2018-07-31 上海泽玛克敏达机械设备有限公司 A kind of the fixed bed slag gasification furnace and its processing method of processing biomass fuel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108342208A (en) * 2018-04-13 2018-07-31 上海泽玛克敏达机械设备有限公司 A kind of the fixed bed slag gasification furnace and its processing method of processing biomass fuel
CN108342208B (en) * 2018-04-13 2023-10-27 上海泽玛克敏达机械设备有限公司 Fixed bed slag gasifier for treating biomass fuel and treatment method thereof

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