CN201367415Y - Biomass fuel circulating gasification device - Google Patents
Biomass fuel circulating gasification device Download PDFInfo
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- CN201367415Y CN201367415Y CNU2009201419695U CN200920141969U CN201367415Y CN 201367415 Y CN201367415 Y CN 201367415Y CN U2009201419695 U CNU2009201419695 U CN U2009201419695U CN 200920141969 U CN200920141969 U CN 200920141969U CN 201367415 Y CN201367415 Y CN 201367415Y
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- roasting kiln
- destructive distillation
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Abstract
The utility model discloses a biomass fuel circulating gasification device, which comprises a combustion furnace and a cracking furnace which are arranged independently, and is characterized in that the upper ends of the combustion furnace and the cracking furnace are both sealed, the cracking furnace includes a heating portion and a dry distillation portion which are sealed by a heat conduction device, the heating portion is communicated with the combustion furnace through a flue gas conveying tube, and the dry distillation portion is communicated with the combustion furnace through a dry distillation gas conveying tube. The biomass fuel circulating gasification device resolves the problems that gas produced by the biomass gasification gas producing device in the prior art has low heating value, high toxicity, complicated gas after-treatment, poor utility and insufficient feasibility.
Description
Technical field
The utility model belongs to the biomass gasification technology field, the method that is specifically related to a kind of biomass fuel cycle gasifying device and gasifies by this device.
Background technology
Biomass are materials of the most extensive existence on the earth, and it comprises all animals, plant and microorganism and by these living substance derivations, drainage and metabolic many organic matters.And biomass are important renewable energy, and it is widely distributed, enormous amount.Biomass gasification technology mainly is to be the gasification technology of raw material with low biomass, makes low biomass finish conversion from solid-state to inflammable gas.Low biomass are based on crop stalk, can also use corn cob, wood chip, faggot etc.The recyclability of low biomass has determined that the energy that this resource produced is renewable energy source.The purposes of biomass gasification technology is identical with urban duct coal gas, and flameholding, thermo-efficiency height are applicable to cooking, heating, boiler etc.This The Application of Technology future is extremely wide.
Biomass gasification process comprises reinforced preparation, gasifying biomass, gas sweetening processing collection supervisor.Various gasifying biomass are produced combustion gas in the prior art technology and device exist problems.
Various biomass continuous gasification furnaces mostly adopt gas blower to bubbling air in the stove in the prior art, make furnace high-temperature fuel be in the incomplete combustion state, redox reaction takes place generate CO and H
2, and destructive distillation goes out methane CH
4Etc. organic inflammable gas.Because 78% the N that contains in the air
2Be rare gas element, do not participate in fuel combustion, and discharge, thereby the effective constituent of the inflammable gas that obtains reduces greatly, thereby the fuel gases calorific value that causes existing biomass gasifying furnace is generally all at 3500～4500KJ/Nm with inflammable gas
3The fuel gases calorific value that this technology obtains is low, does not meet that calorific value is not less than 14630KJ/Nm in the national town gas standard
3Regulation.
Various biomass continous way vapourizing furnaces in the prior art, the main component of the inflammable gas that produces is CO and H
2, the CO content in the combustion gas does not meet national town gas standard and must not be higher than 10% regulation about CO content up to more than 20%, easily produces the CO intoxication accident in actual the use.Contain a large amount of tar in the inflammable gas during inflammable gas for preparing in the prior art, existing technology all is to adopt a whole set of follow-up treating plant to handle, and investment is big, and processing cost height, treatment effect also are difficult to reach the index of national regulation.The problems referred to above have had a strong impact on the utilization of biomass gasification device.
Low to fuel gases calorific value in the prior art, toxicity is big, be difficult to problem such as purification has proposed some solutions, disclose a kind of technology and device that utilizes biomass destructive distillation cracking to produce combustion gas as the Chinese patent application that on September 26th, 2007, disclosed publication number was CN 101041780A, comprised that the purification of the destructive distillation of the preparation of raw material and conveying, raw material and cracking, combustion gas and conveying, carbon removal reclaim technology and finish the required device of this technology; Material promotes at the indoor employing screw rod of destructive distillation, adopts external heat source that material is carried out indirect heating, the combustion gas of producing before condensation through pyrocarbon catalysis, pyrocarbon adopts outside auxiliary thermal source to carry out indirect heating equally.Though this invention is to increasing substantially fuel gases calorific value, the tar content that reduces the CO content in the combustion gas and reduce in the combustion gas has effect preferably, but there is defective in this working of an invention, be that the destructive distillation of raw material and the high temperature of pyrocarbon all need to obtain external heat source, by this scheme, external heat source can be combustion gas, it also can be electric heat source, no matter adopt which kind of thermal source, all be to carry out energy with higher-grade fuel to low-grade fuel to shift, by law of conservation of energy, even 100% transform, gained also only be isocaloric undressed low level fuel, as count material cost, running cost, overhead charges, its economic benefit is poor.This shows, produce the problem that exists in the technology of combustion gas and the device though this technology can tentatively solve existing gasifying biomass, but poor practicability is difficult to implement.
Summary of the invention
The purpose of this invention is to provide a kind of biomass fuel cycle gasifying device, solved gasifying biomass in the prior art and produced that the fuel gases calorific value that gas combustion apparatus produces is low, toxicity big and combustion gas aftertreatment complexity and problems such as practicality is relatively poor, exploitativeness deficiency.
In order to solve these problems of the prior art, technical scheme provided by the invention is as follows:
A kind of biomass fuel cycle gasifying device comprises independent roasting kiln and the pyrolyzer that is provided with, and it is characterized in that all sealings of described roasting kiln and pyrolyzer upper end; Described pyrolyzer comprises the heating part and the destructive distillation portion of heat-transfer device sealing; Described heating part is communicated with roasting kiln by flue gas delivery pipe; Described destructive distillation portion is communicated with roasting kiln by the destructive distillation letter shoot.
Preferably, described circulating gasification device also comprises the feeding unit with sealing cover, and described feeding unit is separately positioned on roasting kiln and pyrolyzer upper end, and passes through the sealing cover difference sealing combustion stove and the pyrolyzer of feeding unit.
Preferably, refractory masses is built in the described roasting kiln upper of furnace body outside by laying bricks or stones, and is communicated with pyrolyzer heating part, destructive distillation portion by flue gas delivery pipe and destructive distillation letter shoot; Described roasting kiln body of heater middle level arranged outside water jacket; The steam pipeline of described water jacket arranged outside steam control valve control is communicated with pyrolyzer destructive distillation portion, roasting kiln respectively with the air shooter connected sum of roasting kiln arranged outside destructive distillation letter shoot control is communicated with; Described air shooter connects the lower end of roasting kiln and the gas blower that the control of air blast control valve is carried respectively; Described roasting kiln body of heater lower floor is provided with ash-pan ash discharge mechanism.
Preferably, described ash-pan ash discharge mechanism is the hydrolock ash-pan.
Preferably, described circulating gasification device also comprises gas-cleaning installation; The smoke discharge pipe of the hot fume emission valve control of described pyrolyzer heating part arranged outside fume emission is connected with gas-cleaning installation; The splitting gas transfer lime that described roasting kiln lower end is provided with the control of splitting gas transfer valve is connected with gas-cleaning installation.
Preferably, the described gas-cleaning installation outside also is provided with the dispatch machine of being responsible for pumping, and described dispatch machine one end is connected with gas-cleaning installation; The other end connects the gaseous emission Y-tube, and described gaseous emission Y-tube opposite side is collected by the splitting gas bleed valve with the atmosphere connected sum by the control of cold flue gas bleed valve respectively and gone the user.
Preferably, described dispatch machine is selected from roots blower, centrifugal high pressure fan, vacuum pump.
Preferably, described pyrolyzer destructive distillation portion inwall circumference is built refractory materials by laying bricks or stones, and described pyrolyzer lower end is provided with dry type ash discharge mechanism; The destructive distillation letter shoot that described destructive distillation portion carries by the control of destructive distillation gas control valve is communicated with the roasting kiln upper strata; Described pyrolyzer heating part comprises the ordered series of numbers flue tube parallel with body of heater, and described flue tube lower end is communicated with flue gas delivery pipe, and its upper end is communicated with hot smoke discharge pipe.
Preferably, described flue tube is a stainless steel tube, and flue tube is to arrange with the multitube of body of heater radial parallel in pyrolyzer, and described biomass fuel is positioned at the flue tube outside.
Preferably, described roasting kiln and pyrolyzer furnace body inside wall all are symmetrical arranged bursting diaphragm.
Preferably, described circulating gasification device also comprises the guideway transit system of electric block control, transports the feeding unit that biomass fuel enters roasting kiln or pyrolyzer by guideway transit system and feeds in raw material.
Preferably, described biomass fuel is selected from corn stalk, straw, cotton stalk, bamboo wood particle, leaf, municipal wastes or its mixture; Described biomass fuel machine-shaping is moulding bar or piece material.
The each round-robin loop cycle of described method is 8-30 minute, and wherein biomass fuel combustion heat release stage regenerator accounts for 15～40%, and the biomass fuel cracking gas-producing accounts for 60～80%, and steam purge accounts for 5%.
The present invention obtains biomass fuel gasifying device system gas and is undertaken by following program:
Biomass fuel combustion heat release and biomass fuel cracking gas-producing independently carry out in the Reaktionsofen at two respectively.Two independently Reaktionsofen be respectively roasting kiln and pyrolyzer.
The biomass carbonated fuel that biomass molding fuel and having finished in pyrolyzer reclaims after the cracking is in the heat release of roasting kiln internal combustion, heat energy is put aside in the bed of material, simultaneously, the high-temperature flue gas that produces is in the promotion of gas blower and enter in the pyrolyzer under the suction of dispatch machine, carry out indirect heat exchange with the biomass fuel in the pyrolyzer, make the biomass fuel in the pyrolyzer reach the required temperature of destructive distillation, and under the state of secluding air, produce destructive distillation, produce the high-temperature combustible gas body that has a large amount of gaseous state tar.The high-temperature combustible gas body that produces in the pyrolyzer enters the top of roasting kiln, and by way of the fire bed of roasting kiln, and the tar component in the high-temperature combustible gas body is able to abundant cracking and produces the organic inflammable gas of high temperature low-carbon (LC) and discharge from the stove bottom in the roasting kiln fire bed.
Wherein the roasting kiln internal combustion is to adopt the counter flow combustion method, be that biomass fuel adds from stove top, the air that gas blower blasts enters in the stove from the stove bottom, and discharge the flue tube enter in the pyrolyzer from stove top, the slag behind the biomass fuel combustion relies on the hydrolock ash-pan of stove bottom to discharge out of the furnace.
The representative formula of above-mentioned reaction can be explained with following equation:
Biomass carbonated fuel is at roasting kiln internal combustion heat release formula: C+O
2→ CO
2+ Q
Biomass fuel is the tar component cracking formula in cracking and the high-temperature combustible gas body in pyrolyzer:
C
m+nH
2(m+n)+2→C
nH
2n+C
mH
2m+2-Q
C
mH
2m+2→CH
4+C
mH
2m-Q
C
mH
2m→CH
4+C
mH
2m-2-Q
In the formula :+Q is heat release;-Q is heat absorption
Wherein adopt indirect-heating heat exchange destructive distillation in the pyrolyzer, i.e. the high-temperature flue gas of roasting kiln generation adopts the outer biomass fuel of conduction and radiation mode and pipe to carry out sufficient heat exchange by the flue tube in the pyrolyzer.Biomass carbonated fuel after the cracking adds roasting kiln by the guideway transit system transportation of being controlled by electric block after collecting and is beneficial to recycle.
Adopt controlling elementss such as micro computer, the time relay, magnetic valve combination, hydraulic pressure, air pressure or valve actuator such as electronic according to certain loop cycle and blas, intermittently hocket biomass fuel combustion heat release and biomass fuel cracking gas-producing.
Flue gas that the biomass fuel combustion heat release is produced discharges after removing ash in the gas, residu(al)tar through dedusting, cooling and purifying and gas being reduced to normal temperature.Inflammable gas that the biomass fuel cracking is produced is removed ash in the gas, residu(al)tar through dedusting, cooling and purifying and gas is reduced to collect behind the normal temperature and goes the user.
Rely on the sealing cover on the feeding unit to completely cut off entering of roasting kiln and the interior outside air of pyrolyzer; The suction function of the dispatch machine by system's setting and the effect that blows of gas blower, the flue gas that roasting kiln produces be from bottom to top by the flue tube indirect heating, and pipeline discharges out of the furnace from the stove, enters dedusting, cooling purifying device; The splitting gas that biomass fuel produces after by flue gas heating because the suction function of the dispatch machine of system's setting enters the top of roasting kiln, by the fire bed of roasting kiln, is transported to refining plant by the splitting gas delivery pipe again and purifies from top to bottom.
Employed biomass material can be through normal temperature drying, fragmentation, sieving separating, coldmoulding, making its diameter is 8～10mm, length is the high density granular shaped fuel (also claiming solid fuel, type bavin, biological coal) of 10～12mm, density can reach 1.2～1.4g/cms, calorific value slightly improves than raw material, its combustioncharacteristics is greatly improved, owing to adjusted moisture content during moulding and shape is easy to use, temperature of combustion improves, transportation is stored convenient, sulfur-bearing is few, and ash is little. and as biomass gasifying furnace fuel, thermo-efficiency can be brought up to more than 50% with it.
Compare with all kinds of biomass straw system gas prior arts in the prior art, beneficial effect of the present invention is:
1. destructive distillation portion was undertaken carrying out the indirect heating destructive distillation by the flue tube of heating part by the sealing cover sealing of feeding unit when circulating gasification device adopted in the pyrolyzer destructive distillation in the technology of the present invention technical scheme, make the present invention obtain carbonizing gas and reduced the intervention of oxygen in the air, make the gasification mode that adopted in the down-stream cracking program of the present invention develop into Pintsch process reaction under the secluding air state by simple redox reaction, the combustion gas composition that produces by CO, H
2For protagonist becomes with H
2, CH
4, C
2H
4Etc. hydrocarbon gas such as low carbon chain hydrocarbon polymers is main, and fuel gases calorific value can be brought up to 3500 * 4.18KJ/m
3More than.
2, in the technology of the present invention technical scheme after biomass fuel such as the biomass straw cracking last remaining charing material (accounting for the 15-20% of stalk add-on) add the heat release of being burnt in the roasting kiln through the Orbital Transport Systems that electric block drives, and heat energy put aside in the bed of material, improved energy utilization rate.The heating part that the high-temperature flue gas that the fuel combustion of roasting kiln endogenous substance produces in the technical solution of the present invention is transported to pyrolyzer by flue gas delivery pipe is used for indirect heating pyrolyzer endogenous substance fuel, make its dry distillation charring, make full use of the heat that the roasting kiln internal combustion produces, improved energy utilization rate.More superior is, the high-temperature combustible gas body of a large amount of tar of band that destructive distillation produces in the pyrolyzer imports in the airtight roasting kiln, carry out further cracking by burning furnace high-temperature fire bed, made full use of the heat of the high temperature fire bed of accumulation of heat in the zone of combustion again, improved energy utilization rate.So circulation significantly reduces the supply of external heat source.
3, biomass charcoal layer, the ash bed itself in the roasting kiln is exactly a good renewable strainer in the technical solution of the present invention, has a large amount of uncracked tar ejectas in the splitting gas that biomass fuel such as stalk cleavage stages produce.The present invention is by the suction function of dispatch machine, make splitting gas pass through high temperature biomass charcoal layer, the ash bed of roasting kiln from top to bottom, can make uncracked tar ejecta carry out Pintsch process, can make tar liquid by biomass charcoal layer, ash bed adsorption cleaning again, thereby realized gas rough purification in the device, and subsequent processing device is simplified greatly.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described:
Fig. 1 is the schematic flow sheet of biomass fuel cycle gasifying device of the present invention;
Fig. 2 is the enlarged diagram of Fig. 1 roasting kiln and pyrolyzer.
Wherein: 1 is roasting kiln, and 2 is pyrolyzer, 3, electric block and guideway transit system, 4, washing tower, 5, the dispatch machine, 6, air-blaster;
11 roasting kiln biomass fuel opening for feeds, 12 is the double-deck simple gate electric lock of roasting kiln wind flap valve, 13 is the roasting kiln water jacket, 14, the wet type ash-pan, 15, the roasting kiln rupture disk, 16, roasting kiln heat-insulation and heat-preservation material, 17 roasting kiln bottom jacket pipes;
21 pyrolyzer biomass fuel opening for feeds, 22 is the double-deck simple gate electric lock of pyrolyzer wind flap valve, and 23 is pyrolyzer destructive distillation portion, and 24 is the pyrolyzer rupture disk, and 25 is the pyrolyzer heating part, 26 is flue tube, 27 pyrolyzer heat-insulation and heat-preservation materials, 28 is the dry type ash discharging gear;
111 is steam pipeline, and 121 are the destructive distillation letter shoot, and 122 is flue gas delivery pipe, and 131 is the splitting gas transfer lime;
F1 air blast motor-operated control valve, the electronic bleed valve of the electronic bleed valve F3 of the hot flue gas of F2 splitting gas electronic bleed valve F4 cold flue gas, F5 belljar valve, the electronic admission valve of F6 self-produced steam, F7 destructive distillation pneumoelectric brake control valve, F8 steam overpressure safety valve.
Embodiment
Below in conjunction with specific embodiment such scheme is described further.Should be understood that these embodiment are used to the present invention is described and are not limited to limit the scope of the invention.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Embodiment: as scheme this biomass fuel cycle gasifying device, the guideway transit system 3, gas-cleaning installation 4, independent roasting kiln 1 and the pyrolyzer 2 that is provided with that comprise electric block control, at roasting kiln and pyrolyzer upper end is the feeding unit with sealing cover, by the sealing cover difference sealing combustion stove and the pyrolyzer of feeding unit.
Refractory masses is built in the roasting kiln upper of furnace body outside by laying bricks or stones, and is communicated with pyrolyzer heating part 25, destructive distillation portion 23 by flue gas delivery pipe 122 and destructive distillation letter shoot 121; Roasting kiln body of heater middle level arranged outside water jacket 13; The water jacket arranged outside is communicated with and is communicated with the destructive distillation letter shoot 121 control connections of pyrolyzer destructive distillation portion, roasting kiln respectively with the air shooter of roasting kiln arranged outside by the steam pipeline 111 of the electronic admission valve F6 control of self-produced steam; Air shooter connects the lower end of roasting kiln and the gas blower 6 that air blast control valve F1 control is carried respectively; Roasting kiln body of heater lower floor is provided with hydrolock ash-pan 14.
Pyrolyzer comprises the heating part 25 and the destructive distillation portion 23 of heat-transfer device sealing; Described heating part is communicated with roasting kiln by flue gas delivery pipe 122; Described destructive distillation portion is communicated with roasting kiln by destructive distillation letter shoot 121.Pyrolyzer destructive distillation portion inwall circumference is built refractory materials by laying bricks or stones, and described pyrolyzer lower end is provided with dry type ash discharge mechanism 28; The destructive distillation letter shoot that described destructive distillation portion carries by destructive distillation gas control valve F7 control is communicated with the roasting kiln upper strata; Described pyrolyzer heating part comprises the ordered series of numbers flue tube 26 parallel with body of heater, and described flue tube lower end is communicated with flue gas delivery pipe, and its upper end is communicated with hot smoke discharge pipe.Flue tube is a stainless steel tube, and flue tube is to arrange with the multitube of body of heater radial parallel in pyrolyzer, and described biomass fuel is positioned at the flue tube outside.Roasting kiln lower gas transport pipe is jacket pipe 17 structures.
The smoke discharge pipe of the hot fume emission valve of pyrolyzer heating part arranged outside F2 control fume emission is connected with gas-cleaning installation 4; The splitting gas transfer lime 131 that described roasting kiln lower end is provided with the control of splitting gas transfer valve is connected with gas-cleaning installation.
The gas-cleaning installation outside also is provided with the roots blower of being responsible for pumping, and described roots blower one end is connected with gas-cleaning installation; The other end connects the gaseous emission Y-tube, and described gaseous emission Y-tube opposite side is collected by splitting gas bleed valve F3 with the atmosphere connected sum by cold flue gas bleed valve F4 control respectively and gone the user.
Roasting kiln and pyrolyzer furnace body inside wall all are symmetrical arranged bursting diaphragm (15,24), and the interior charing fuel of biomass fuel or pyrolyzer transports the feeding unit that enters roasting kiln or pyrolyzer by guideway transit system 3 and feeds in raw material.Burner block top and pyrolyzer body of heater all have roasting kiln heat-insulation and heat-preservation material (16,27) to carry out thermal isolation and heat storage.
The gasification of this device specifically may further comprise the steps:
(1) air blast biomass molding fuel accumulation of heat, the flue gas empty stage
Adopt electric block and guideway transit system 3 to promote transportation, the biomass fuel in the biomass fuel hopper is put into biomass fuel opening for feed 21, start the double-deck simple gate electric lock of pyrolyzer wind flap valve 22, biomass molding fuel enters pyrolyzer.Simultaneously, by roasting kiln biomass fuel and pyrolyzer charing fuel feed inlet 11 and the double-deck simple gate electric lock of roasting kiln wind flap valve 12 biomass fuel and pyrolyzer charing fuel are delivered to roasting kiln.
Open air-blaster 6, air blast motor-operated control valve F1, dispatch machine 5, the electronic bleed valve F2 of hot flue gas, the electronic bleed valve F4 of cold flue gas, air enters in the roasting kiln from roasting kiln bottom jacket pipe, with biomass molding fuel red-hot in the stove and the carbide generation oxidizing reaction after the cracking, produce aniseed CO
2Gas and a small amount of CO gas, form flue gas and emit a large amount of heats, heat is put aside in the biomass bed of material, the suction function of the high-temperature flue gas that produces by the dispatch machine, carry out indirect heat exchange from upper furnace by the biomass fuel that fume pipe enters in pyrolyzer flue tube and the pyrolyzer, make the biomass fuel in the pyrolyzer reach the required temperature of destructive distillation, and under the state of secluding air, carry out destructive distillation, produce the high-temperature combustible gas body that has a large amount of gaseous state tar.The flue gas that is absorbed behind its heat energy by biomass enters cooling purifying device---washing tower 4, and dedusting, cooling, flue gas after being purified, through dispatch machine 5 force feeds, from the emptying valve---the electronic bleed valve F4 of cold flue gas enters atmosphere.
(2) the steam purge stage
Close air blast motor-operated control valve F6, open the electronic admission valve F1 of self-produced steam simultaneously, self-produced steam purges intrasystem residual air clean by the described route operation of above-mentioned (1) stage.
(3) the biomass cracking system gas stage
Close the electronic bleed valve F2 of hot flue gas, the electronic bleed valve F4 of cold flue gas, open the electronic bleed valve F3 of splitting gas, open destructive distillation pneumoelectric brake control valve F7, under the suction of dispatch machine 5, biomass fuel in the pyrolyzer carries out destructive distillation and produces the high-temperature combustible gas body that has a large amount of gaseous state tar under the state of secluding air, through destructive distillation pneumoelectric brake control valve F7, contact and cracking fast with high warm material layer from top to down in the roasting kiln 1.The organic split product of biomass straw is mainly CH
4, C
2H
4Deng organic hydrocarbon, the thermal value height, institute's aerogenesis body is by the suction function of dispatch machine 5, enter system from roasting kiln 1 bottom splitting gas outlet pipe, enter cooling purifying device---washing tower 4, through the splitting gas of dedusting, cooling, purification,, enter with gas system or gas holder through the electronic bleed valve F3 of splitting gas by dispatch machine 5 force feeds.
(4) residual air recovery stage
Close destructive distillation pneumoelectric brake control valve F7, open the electronic admission valve F6 of self-produced steam simultaneously, self-produced steam purges intrasystem remaining combustion gas clean by the described route operation of above-mentioned (3) stage.
A loop cycle in above-mentioned each stage is 4-10 minute, wherein air blast biomass molding fuel accumulation of heat, the flue gas empty stage accounts for 30-40%, the steam purge stage accounts for 2-3%, the biomass moulding cracking gas-producing stage accounts for 65-55%, the residual air recovery stage accounts for 2-3%, setting and adjustment that cycle time and each time in stage distribute, should determine according to factors such as raw material situation, personnel operation situation, system scale sizes, by topworkies such as controlling elements such as microcomputer, magnetic valve combination, the time relay and electronic, hydraulic pressure, operated pneumatic valves, realize control automatically.
The combustion gas result such as the table 1 that produce.
The gas component test result of table 1 apparatus of the present invention preparation
| Component | H 2 | ?CH 4 | ?CO | ?C mH n | ?CO 2 | ?N 2 | ?O 2 | ?SO 2 |
| |
25--30 | ?30--35 | ?6--8 | ?3--4 | ?12--16 | ?13--16 | ?＜1 | Trace |
The fuel gases calorific value that the present invention obtains reaches 17605KJ/m
3(4212KC/m
3); Its key technical indexes has reached the technical indicator of the town gas of national regulation, and promptly calorific value reaches 14630KJ/Nm
3More than, and from last table as seen, CO content is lower than below 10%, meets national technical standard.In sum, the present invention adopts secluding air to do the little combustion gas of high heating value, toxicity that the slide method is produced, and to the regeneration of the biomass waste in China China town and country, to save energy, preserve the ecological environment, has important practical significance.
Above-mentioned example only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the people who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalent transformations that spirit is done according to the present invention or modification all should be encompassed within protection scope of the present invention.
Claims (8)
1. a biomass fuel cycle gasifying device comprises independent roasting kiln and the pyrolyzer that is provided with, and it is characterized in that all sealings of described roasting kiln and pyrolyzer upper end; Described pyrolyzer comprises the heating part and the destructive distillation portion of heat-transfer device sealing; Described heating part is communicated with roasting kiln by flue gas delivery pipe; Described destructive distillation portion is communicated with roasting kiln by the destructive distillation letter shoot.
2, biomass fuel cycle gasifying device according to claim 1, it is characterized in that described circulating gasification device also comprises the feeding unit with sealing cover, described feeding unit is separately positioned on roasting kiln and pyrolyzer upper end, and passes through the sealing cover difference sealing combustion stove and the pyrolyzer of feeding unit.
3, biomass fuel cycle gasifying device according to claim 1 is characterized in that building refractory masses by laying bricks or stones outside the described roasting kiln upper of furnace body, and is communicated with pyrolyzer heating part, destructive distillation portion by flue gas delivery pipe and destructive distillation letter shoot; Described roasting kiln body of heater middle level arranged outside water jacket; The steam pipeline of described water jacket arranged outside steam control valve control is communicated with pyrolyzer destructive distillation portion, roasting kiln respectively with the air shooter connected sum of roasting kiln arranged outside destructive distillation letter shoot control is communicated with; Described air shooter connects the lower end of roasting kiln and the gas blower that the control of air blast control valve is carried respectively; Described roasting kiln body of heater lower floor is provided with ash-pan ash discharge mechanism.
4, biomass fuel cycle gasifying device according to claim 1 is characterized in that described circulating gasification device also comprises gas-cleaning installation; The smoke discharge pipe of the hot fume emission valve control of described pyrolyzer heating part arranged outside fume emission is connected with gas-cleaning installation; The splitting gas transfer lime that described roasting kiln lower end is provided with the control of splitting gas transfer valve is connected with gas-cleaning installation.
5, biomass fuel cycle gasifying device according to claim 4 is characterized in that the described gas-cleaning installation outside also is provided with the dispatch machine of being responsible for pumping, and described dispatch machine one end is connected with gas-cleaning installation; The other end connects the gaseous emission Y-tube, and described gaseous emission Y-tube opposite side is collected by the splitting gas bleed valve with the atmosphere connected sum by the control of cold flue gas bleed valve respectively and gone the user.
6, biomass fuel cycle gasifying device according to claim 1 is characterized in that described pyrolyzer lower end is provided with dry type ash discharge mechanism; The destructive distillation letter shoot that described destructive distillation portion carries by the control of destructive distillation gas control valve is communicated with the roasting kiln upper strata; Described pyrolyzer heating part comprises the ordered series of numbers flue tube parallel with body of heater, and described flue tube lower end is communicated with flue gas delivery pipe, and its upper end is communicated with hot smoke discharge pipe.
7, biomass fuel cycle gasifying device according to claim 1, it is characterized in that described circulating gasification device also comprises the guideway transit system of electric block control, transport the feeding unit that biomass fuel enters roasting kiln or pyrolyzer by guideway transit system and feed in raw material.
8, biomass fuel cycle gasifying device according to claim 1, it is characterized in that described roasting kiln upper of furnace body and pyrolyzer body of heater the periphery inboard build refractory masses by laying bricks or stones.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201419695U CN201367415Y (en) | 2009-03-06 | 2009-03-06 | Biomass fuel circulating gasification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201419695U CN201367415Y (en) | 2009-03-06 | 2009-03-06 | Biomass fuel circulating gasification device |
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| CN201367415Y true CN201367415Y (en) | 2009-12-23 |
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ID=41486308
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861005A (en) * | 2016-05-16 | 2016-08-17 | 谭立钧 | Biomass dry distillation furnace |
-
2009
- 2009-03-06 CN CNU2009201419695U patent/CN201367415Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861005A (en) * | 2016-05-16 | 2016-08-17 | 谭立钧 | Biomass dry distillation furnace |
| CN105861005B (en) * | 2016-05-16 | 2020-01-07 | 河南工创联盟科技有限公司 | Biomass retort |
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