CN202626125U - Downdraft tar secondary cracking gasification device - Google Patents
Downdraft tar secondary cracking gasification device Download PDFInfo
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- CN202626125U CN202626125U CN2012202137344U CN201220213734U CN202626125U CN 202626125 U CN202626125 U CN 202626125U CN 2012202137344 U CN2012202137344 U CN 2012202137344U CN 201220213734 U CN201220213734 U CN 201220213734U CN 202626125 U CN202626125 U CN 202626125U
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Abstract
The utility model belongs to the technical field of biomass energy utilization, and relates to a downdraft biomass gasification furnace, which mainly comprises a furnace cover, an outer furnace tube, an inner furnace tube, a gas ring cavity, a furnace pipe, a grate, an ash room, an ash discharge port, a feed port, a heat insulating layer, a dry distillation room, a throat baffle, a gasification room, an air inlet pipe, a strainer, a U-shaped air guide tube, a gas outlet and a fan, and is characterized in that the gasification room surrounded by the refractory heat insulation furnace pipe is arranged in the middle section of the inner furnace tube, and the U-shaped air guide tube penetrates through the gasification room from top to bottom; and the strainer is arranged between the ash room and the gas ring cavity. According to the downdraft tar secondary cracking gasification device, the high temperature can be quickly generated, the heat loss is reduced, and the tar and dust contents in gas are reduced; and meanwhile, the U-shaped air guide tube is arranged, so that the secondary cracking of tar is realized; and the structure is simple and compact, the operation is convenient, and the running cost is low.
Description
Technical field
The invention belongs to the biomass energy utilization technologies field, relate to the lower suction type biomass gasifying furnace.
Background technology
Biomass energy is the fourth-largest energy that is only second to coal, oil, Sweet natural gas, in world energy consumption, occupies certain ratio; And biomass combustion is at CO
2Realize zero release on the total amount, eliminated the root that produces Greenhouse effect.Therefore, biomass energy will become the important component part of following sustainable energy.Gasifying biomass is one of biomass energy utilization technologies, mainly contains two types of fixed bed, fluidized-beds at present.Wherein, fixed-bed gasification furnace is applicable to advantages such as bulk and macrobead raw material because of it has simple in structure, easy, cheap, the processing ease of manufacturing, is fit to China rural area and uses.Fixed-bed gasification furnace mainly contains updraft type and two kinds of structure formations of lower suction type, no matter adopts which kind of form, all exists tar content high, and the easy blocking pipeline influences gasification efficiency, and the destruction system normally moves.The tar content height is restricting the development of vapourizing furnace always, and employing way usually is to add refining plant, and it is bigger to lean on refining plant to remove the tar difficulty merely, also can increase cost, wastes energy contaminate environment.At present, lower suction type vapourizing furnace normally combustion gas is exported body of heater then directly through high-temp combustion layer and reducing zone, because of the residence time shorter, the coke tar cracking effect is not very good.
Summary of the invention
In order to overcome present the problems referred to above; The present invention designs second pyrolysis vapourizing furnace in a kind of novel lower suction type tar stove, to solve the high problem of edible oil content that the lower suction type vapourizing furnace exists, can effectively improve gasification efficiency; Increase fuel gases calorific value, reduce the influence of power loss and tar gas pipe line.
Technical solution problem of the present invention adopts following technical scheme:
A kind of lower suction type secondarily cracking tar gasification installation is upright cylindrical structure, mainly comprises bell, outer furnace tube, interior stove tube; The combustion gas ring cavity, flue, fire grate, grey chamber, ash discharging hole; Opening for feed, thermal insulation layer, destructive distillation chamber, aditus laryngis baffle plate, vaporizer; Blast pipe, filtering net, " U " type gas tube, gas outlet, blower fan.It is characterized in that: the vaporizer of going along with sb. to guard him by the refractory heat-insulating flue around interior stove tube stage casing is provided with; " U " type gas tube that from top to bottom runs through vaporizer; Be provided with filtering net between ash chamber and the combustion gas ring cavity.
Vaporizer is made up of flue, combustion gas ring cavity and interior stove tube diametrically from inside to outside.The blast pipe that runs through stage casing thermal insulation layer and flue is set on the sidewall of the furnace body of vaporizer, and blast pipe tangentially evenly feeds flue, and blast pipe links to each other with the outer blower fan of body of heater, and the flue bottom is provided with fire grate.
" U " type gas tube is tiltedly worn the aditus laryngis baffle plate, runs through vaporizer, crosses grey chamber, interior stove tube, thermal insulation layer and outer furnace tube.
Compare with the prior art scheme, unusual effect of the present invention is embodied in:
(1) the present invention combines the principle of general lower suction type vapourizing furnace; The radial diameter of flue is designed to the 1/4-1/2 of stove tube diameter, and flue adopts fire-resistant heat insulating material simultaneously, and the temperature when making winner's vaporizer gasification can gather together rapidly; Form the high-temperature zone, wherein the gasification center is 900-1100
0C makes biomass to gasify fully, and gasification efficiency increases substantially, and the abundant cracking of tar that gas produces significantly reduces quantity of tar formation.
(2) flue of vaporizer is provided with a plurality of cyclone type air inlet ports, eliminates insufficient, the uneven problem of gasification temperature of gas-solid reaction, forms uniform high-temperature zone, helps the abundant cracking of tar.
(3) the reverse filter screen that penetrates of combustion gas filters the dust in the combustion gas, realizes the inertial separation of solid particulate in the combustion gas, obtains comparatively clean combustion gas.
(4) " Contraband " type gas tube is set, " U " type gas tube passes aditus laryngis portion baffle plate, runs through vaporizer.Combustion gas after the gasification gets into gas tube through filtering net, forces combustion gas again through the vaporizer center, realizes the second pyrolysis in the tar stove.
(5) simple in structure, compact, easy to operate, running cost is low.
Description of drawings:
Fig. 1 is this bright structural representation.
Fig. 2 is an air inlet device diagrammatic cross-section of the present invention.
Label among the figure: 1 bell, 2 outer furnace tubes, 3 interior stove tubes, 4 combustion gas ring cavities, 5 flues, 6 fire grates; Grey chambers 7,8 ash discharging holes, 9 opening for feeds, 10 moist closets, destructive distillation chambers 11,12 aditus laryngis baffle plates; 13 vaporizers, 14 blast pipes, 15 filtering nets, 16 " U " type gas tube, 17 gas outlets, 18 blower fans.
Embodiment:
Further specify the embodiment of a kind of lower suction type secondarily cracking tar of the present invention gasification installation below in conjunction with accompanying drawing.
Down referring to Fig. 1, Fig. 2; This vapourizing furnace is upright cylindrical structure, and lower end closed is made up of outer furnace tube 2 and interior stove tube 3; Be provided with thermal insulation layer 10 between outer furnace tube 2 and the interior stove tube 3; Interior stove tube 3 internal structures are made up of grey chamber 7 and " U " type gas tube 16 of the vaporizer 13 in the destructive distillation chamber 11 of epimere, stage casing, combustion gas ring cavity 4, hypomere, and the destructive distillation chamber 11 of epimere is connected by aditus laryngis baffle plate 12 with the vaporizer 13 in stage casing, and the vaporizer 13 in stage casing and the grey chamber 7 of hypomere were opened by fire grate in 6 minutes; Combustion gas ring cavity 4 was opened by filtering net with grey chamber 7 in 15 minutes, and " U " type gas tube 16 passes aditus laryngis baffle plate 12 and runs through vaporizer 13.
Vaporizer 13 is made up of flue 5, combustion gas ring cavity 4 and interior stove tube 3 diametrically from inside to outside.The blast pipe 14 that runs through stage casing thermal insulation layer 10 and flue 5 is set on the sidewall of the furnace body of vaporizer 13, and blast pipe 14 tangentially evenly feeds flue 5, and blast pipe 14 links to each other with the outer blower fan 18 of body of heater, and flue 5 bottoms are provided with fire grate 6 and filtering net 15.
Ash chamber 7 is surrounded by stove tube 3 in circular, and ash discharging hole 8 and gas outlet 17 are set on its sidewall.
" U " type gas tube 16 is a pipe, tiltedly wears aditus laryngis baffle plate 12, runs through vaporizer 13, crosses grey chamber 7, interior stove tube 3, thermal insulation layer 10 and outer furnace tube 2.
During use, open bell 1, the fire grate 6 in vaporizer 13 is placed some ignition substance or flammable materials, for example; Place charcoal or dried firewood standing grain, and spill some easy fuel materials,, open blower fan 18 like alcohol, kerosene etc.; Be delivered to vaporizer 13 to air through blast pipe 14, ignition joins destructive distillation chamber 11 with material through opening for feed 9, covers bell 1; Flue 5 is the low fire-resistant heat insulating material of heat transfer coefficient, can gather temperature rapidly, forms high temperature reaction zone, and combustion gas realizes the cracking of tar at first downwards through high-temperature gasification chamber 13; Through fire grate 6 and filtering net 15, combustion gas after filtering gets into combustion gas ring cavity 4 then, gets into " U " type gas tube 16 again, forces combustion gas again through high-temperature gasification chamber 13; Tar in the combustion gas is carried out second pyrolysis, through gas outlet 17 output low tar combustion gas, after purifying, deliver to the user at last.Without in this lower suction type tar stove during the second pyrolysis vapourizing furnace, change ash discharging hole 8, carry out deslagging.
Claims (4)
1. a lower suction type secondarily cracking tar gasification installation is upright cylindrical structure, mainly comprises bell (1), outer furnace tube (2), interior stove tube (3); Combustion gas ring cavity (4), flue (5), fire grate (6), grey chamber (7), ash discharging hole (8); Opening for feed (9), thermal insulation layer (10), destructive distillation chamber (11), aditus laryngis baffle plate (12), vaporizer (13); Blast pipe (14), filtering net (15), " U " type gas tube (16), gas outlet (17), blower fan (18); It is characterized in that: the vaporizer (13) of going along with sb. to guard him by refractory heat-insulating flue (5) around interior stove tube (3) stage casing is provided with; " U " type gas tube (16) that from top to bottom runs through vaporizer (13); Be provided with filtering net (15) between ash chamber (7) and the combustion gas ring cavity (4).
2. a kind of lower suction type secondarily cracking tar gasification installation according to claim 1 is characterized in that: vaporizer (13) is made up of flue (5), combustion gas ring cavity (4) and interior stove tube (3) diametrically from inside to outside; The blast pipe (14) that runs through stage casing thermal insulation layer (10) and flue (5) is set on the sidewall of the furnace body of vaporizer (13); Blast pipe (14) tangentially evenly feeds flue (5); Blast pipe (14) links to each other with the outer blower fan (18) of body of heater, and flue (5) bottom is provided with fire grate (6).
3. a kind of lower suction type secondarily cracking tar gasification installation according to claim 1; It is characterized in that: " U " type gas tube (16); Tiltedly wear aditus laryngis baffle plate (12), run through vaporizer (13), cross grey chamber (7), interior stove tube (3), thermal insulation layer (10) and outer furnace tube (2).
4. a kind of lower suction type secondarily cracking tar gasification installation according to claim 1 is characterized in that: be provided with filtering net (15) between grey chamber (7) and the combustion gas ring cavity (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202137344U CN202626125U (en) | 2012-05-14 | 2012-05-14 | Downdraft tar secondary cracking gasification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202137344U CN202626125U (en) | 2012-05-14 | 2012-05-14 | Downdraft tar secondary cracking gasification device |
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| Publication Number | Publication Date |
|---|---|
| CN202626125U true CN202626125U (en) | 2012-12-26 |
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ID=47379345
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202137344U Expired - Fee Related CN202626125U (en) | 2012-05-14 | 2012-05-14 | Downdraft tar secondary cracking gasification device |
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| CN (1) | CN202626125U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104593082A (en) * | 2015-01-12 | 2015-05-06 | 广东节王电气科技有限公司 | Biomass gasifier with high tar cracking rate |
-
2012
- 2012-05-14 CN CN2012202137344U patent/CN202626125U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104593082A (en) * | 2015-01-12 | 2015-05-06 | 广东节王电气科技有限公司 | Biomass gasifier with high tar cracking rate |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20150514 |
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| EXPY | Termination of patent right or utility model |