CN204079891U - Family technique for biomass pyrolysis carbon gas joins combusting range - Google Patents

Abstract

The utility model belongs to family biomass gasifying furnace technical field, be specifically related to a kind of family technique for biomass pyrolysis carbon gas and join combusting range, a kind of pyrolysis is provided and pyrolysis two kinds of reaction product (combustion gas and carbon residue) time segment point place is joined the technical scheme used in cooking, wherein, comprise rotary drum-type pyrolysis reactor: the stator in hollow cylindrical structure and the rotor being sleeved on stator central authorities, stator comprises the convergence sun exposure chamber being followed successively by shell, thermal insulation layer, electrothermal layer, electric radiation chamber from outside to inside and passing through above-mentioned each layer; Fix thermal insulation layer, shell, gear successively outside the two ends that rotor comprises inner casing, inner casing inner wall baffle-plate, inner casing one end are that cap and the other end are rotatable interface, inner casing exposes outside stator, this gear is coupled with upper gear of motor shaft.In the utility model smoke evacuation containing tar, in cooking stove not residual tar, need not light a fire on fire, increase cooking heat, use simple, be applicable to peasants and herdsmen's cooking and heating at home.

Description

Family technique for biomass pyrolysis carbon gas joins combusting range

Technical field

The utility model relates to a kind of biomass cooking cooking stove, belongs to family biomass gasifying furnace technical field, is specifically related to family technique for biomass pyrolysis carbon gas and joins combusting range.

Background technology

Facing mankind the dual-pressure of economic growth and environment protection, must walk the road of low-carbon economy undoubtedly, therefore, and critical positions that renewable energy source is referred.In vast rural area and pastoral area, have a large amount of biomass resources, comprise the waste (as wood chip, rice husk) and animal excretion etc. of the waste (as agricultural crop straws such as corn stalk, sorghum stalks, wheat straw, straw, beanstalk and cotton stalks) in agricultural production process, agricultural machining industry, peasants and herdsmen family relies on these biomass as cooking, heating fuel just.The most original form that the most simply utilizes is direct burning, and traditional firewood range thermo-efficiency is only about 10%, and the firewood-saving stove efficiency promoted also can only reach 20%-30%.And thermochemical conversion new technology makes biomass be gaseous fuel from solid transformation, efficiency of energy utilization, up to 75%-90%, belongs to the category of clean energy.Based on efficiency and clean advantage, the microminiaturization of biomass thermal chemical transformation technology, familyization can available protecting environment, greatly accelerate villages and small towns resident and realize energy modernization, meet the active demand to high-grade energy after peasant's affluence.

Family biomass stove on market mainly contains two types: vapourizing furnace and half-gasification oven.

Family biomass gasifying furnace is generally design by the regulation of agricultural industry criteria " stalk gasifier quality evalution technical specifications (NY T1417-2007) ".It is defined as " stalk gasifier is mainly raw material with agricultural crop straw; also can rice husk, sawdust, timber, leaf etc. be used to be raw material, the Domestic separating be made up of gasification generator, cleaner, refrigerating unit, gas pipe line and kitchen range etc. or integral fuel gas apparatus ".As " domestic biomass gasification stove " that the patent No. is 201320464400.9, major parts comprises blower fan, gasification reacting furnace, strainer, gas-holder, gas-cooker etc.; And for example total 184th periodical of periodical " agrotechnique and equipment " " design and research of 11SQ-400 type domestic biomass gasification stove " stepped on, also added annular Pintsch process vaporizer to expect to improve combustion gas quality.

Family biomass half-gasification oven develops for alleviating gasifier tar harm.As " efficient low emission biomass semi-gasification furnace " that the patent No. is 201120067298.X, the patent No. is " a kind of domestic biomass half-gasification oven " of 201220068331.5, they adopt on gasification reacting furnace air outlet, directly connect kitchen range method and stove integral, namely produce and namely burn, allow gaseous state tar in hot combustion gas participate in kitchen range together burn, alleviate the impact of tar to a certain extent, but gasification efficiency is compared vapourizing furnace and is had and reduce by a relatively large margin.

Above-mentioned family biomass gasifying furnace and half-gasification oven, substantially be all belong to fixed bed gasification technology category, its ultimate principle is vaporized chemical with air under anoxia condition in fixed bed, ignition part biological matter in burner hearth and possess gasification temperature, makes not burned biomass pyrolytic output inflammable gas.Fixed bed gasification advantage does not need outside to provide fuel or thermal source and simple.Periodical " agricultural engineering technology (New Energy Industry) " 2008 the 05th periodical is stepped on " family biomass furnace current situation " and is indicated the defect that the family vapourizing furnace on market exists, comprehensive market investigation result, may be summarized to be: (1) environmental issue, the low tar content that causes of gasification temperature is large, easy blocking vapourizing furnace, kitchen range and pipeline, also overflow the outer unordered discharge of stove and pollute.(2) safety problem, the ignition difficulties time on fire is long, period flue gas and the discharge of CO gas pollution thing exceed standard in a large number, produce very large tarry odour and dense smoke, polluted air, causes a significant threat HUMAN HEALTH.(3) efficiency, the requirement of reinforced compacting operation is strict, and it is all not all right that tension crosses pine; Tension stove, not out of pyrolysis gas, can stop working; Cross pine ventilation too fast, only meeting smoke (CO2 of band charcoal ash), does not produce pyrolysis gas; All instability of generator yield and quality.(4) practical problems, cause the gasification of internal heat type to be difficult to control because family vapourizing furnace gasification space is little, often de-material is flame-out, constantly again to light a fire, does a meal repeated multiple times, very inconvenient.Such as above not enough, family biomass gasifying furnace is difficult to apply always.

Summary of the invention

The low tar content that causes of gasification temperature that the utility model mainly solves existing for prior art is large; the problem of easy blocking vapourizing furnace, kitchen range and pipeline; a kind of family technique for biomass pyrolysis carbon gas connection burning method and cooking stove are provided; adopt the method and cooking stove; containing tar, not residual tar in cooking stove in smoke evacuation, with being beneficial to environment protection.

The utility model also has an object to be that to solve ignition difficulties existing in prior art, time on fire long, flue gas and CO gas pollution thing discharge the atmospheric pollution caused and the problem threatened to HUMAN HEALTH of exceeding standard in a large number, a kind of family technique for biomass pyrolysis carbon gas connection burning method and cooking stove are provided, adopt the method and cooking stove, need not light a fire on fire and scarfing cinder, there is no tar and dense smoke exhaust emission air and to the problem that HUMAN HEALTH causes a significant threat, improve security.

The utility model has an object to be all unstable, the unmanageable problem of gasification solving generator yield existing in prior art and quality again, a kind of family technique for biomass pyrolysis carbon gas connection burning method and cooking stove are provided, the method and cooking stove pyrolysis temperature and conversion process is adopted to be easy to control, aerogenesis speed is fast and steadily, gaseous mass is stable, calorific value is high.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:

A kind of family technique for biomass pyrolysis carbon gas joins combusting range, comprising: pyrolysis reactor, the gas-cooker be connected with the gas outlet of pyrolysis reactor, is characterized in that, described pyrolysis reactor also comprises a gas inlet.

Optimize, above-mentioned family technique for biomass pyrolysis carbon gas joins combusting range, and described pyrolysis reactor is rotary drum-type pyrolysis reactor, comprise: stator, the rotor be sleeved on stator, for driving the motor of rotor turns, be positioned at the pyrolysis heating unit on stator, wherein:

Described stator is hollow cylindrical structure, comprises stator casing and fixing stator thermal insulation layer inside the shell;

Described rotor comprises rotor inner casing, block, gas rotary adapter, air swivel joint, thermal insulation layer, rotor case, rotor inner casing inwall is fixed with one or more baffle plate, rotor inner casing vertically side vertical surface connects cap, opposite side connects gas rotary adapter and air swivel joint, on the gas outlet that described gas rotary adapter and air swivel joint are socketed in pyrolysis reactor respectively and gas inlet; Described rotor inner casing is sleeved on after among stator and fixes thermal insulation layer, the outside fixed rotor shell of thermal insulation layer outside exposed portion, two.

Optimize, above-mentioned family technique for biomass pyrolysis carbon gas joins combusting range, and described pyrolysis heating unit is electric heater unit, comprising: electrothermal layer, electric radiation chamber, wherein: electrothermal layer is fixed on inside stator thermal insulation layer, electric radiation chamber is the space between electrothermal layer and rotor inner casing.

Optimize, above-mentioned family technique for biomass pyrolysis carbon gas joins combusting range, described pyrolysis heating unit for assemble day optical heating device, comprise assemble sun exposure chamber, described convergence sun exposure chamber be on stator to exterior open cell with make inner casing can part directly be assembled sun-exposed space by outside.

Optimize, above-mentioned family technique for biomass pyrolysis carbon gas joins combusting range, and the Internal baffle of described rotor inner casing is sandwich structure, and interlayer inner chamber communicates with the gas inlet of rotor, and two folder faces are provided with appropriate wind distributing hole.

Optimize, above-mentioned family technique for biomass pyrolysis carbon gas joins combusting range, and described pyrolysis reactor is rotary drum-type pyrolysis reactor, and it is built-in with mill in right amount ball or catalysis and mills ball.

Optimize, above-mentioned family technique for biomass pyrolysis carbon gas joins combusting range, also comprises the gas holder that fuel gas inlet is connected with the gas outlet of pyrolysis reactor, and described gas holder also comprises a water supplement port communicated with water source.

Optimize, above-mentioned family technique for biomass pyrolysis carbon gas joins combusting range, described gas-cooker comprises stove burner, the chamber of a kitchen range, the cooking pot be positioned on the chamber of a kitchen range, described stove burner is arranged on bottom the chamber of a kitchen range, chamber of a kitchen range upper opening seals by described cooking pot, the air distribution entrance of described stove burner communicates with air, and fuel gas inlet communicates with the gas outlet of gas holder.

Optimize, above-mentioned family technique for biomass pyrolysis carbon gas joins combusting range, also comprises cleaning type waste-heated water-tank, and described cleaning type waste-heated water-tank comprises waste-heated water-tank, the fly-ash separator be arranged in waste-heated water-tank, and the exhanst gas outlet of described gas-cooker is communicated with air by fly-ash separator.

Therefore, the utility model tool has the following advantages:

1. kind of the product of two after pyrolytic reaction (combustion gas and carbon residue) time segment (combustion gas at front, carbon residue rear) point place (combustion gas at stove burner, carbon residue at pyrolysis reactor) burning continues or combines for cooking by the utility model by biomass pyrolytic, increase considerably the heat for cooking, tar remaining everywhere in all right clearing device of high-temperature flue gas of carbon residue burning, reduce the collection trouble of carbon residue in pyrolysis reactor, avoid carbon residue and leak and cause dust pollution.

2. the rotor rotary rolling of rotary drum-type pyrolysis reactor of the present utility model, biomass equal opportunity contact inner casing inwall, mass-and heat-transfer evenly also has erosion to burn effect; Built-in ball impact biomass or the carbon residue of milling, accelerates biomass pyrolytic speed or improves carbon residue burn-off rate; Pyrolysis temperature and conversion process are easy to control, and aerogenesis speed is fast and steadily, gaseous mass is stable, calorific value is high, tar content is few; Keep temperature during combustion gas arrival burner to be greater than tar liquefaction Precipitation Temperature, it is that heat energy adds cooking energy that gaseous state tar can be made in kitchen range, to participate in burning conversion together with combustion gas, eliminates tar with the outer pollution discharging of flue dust.

3. rotary drum-type pyrolysis reactor of the present utility model is by adjustment pyrolysis temperature and time, coordinate rotary rolling speed and intensity of milling, the biomass material pyrolysis rate of different sorts, different size, different water cut can be controlled, reach substantially identical cooking effect.The These characteristics of rotary drum-type pyrolysis reactor makes the utility model device have very broad biomass material adaptability.

4. the utility model adopts electric heat source and/or assembles the converting mode of sun heat source, and avoiding gasification mode needs process on fire of lighting a fire, the problem thus not having tar and dense smoke exhaust emission air and cause a significant threat HUMAN HEALTH; Heat-dissipating energy in the utility model device also adopts where necessary after pyrolysis reactor output pyrolysis gas " local gasification ", auxiliary electro-heat and/or assemble sun-fever, but not exclusively rely on heat of gasification, reach the object that saving electric energy stablizes again pyrolysis.

The family technique for biomass pyrolysis carbon gas connection burning method that the utility model provides and cooking stove, to realize in smoke evacuation containing tar, in cooking stove not residual tar, need not light a fire on fire and scarfing cinder, increase cooking heat, use simple, embody safety, environmental protection, efficient, practical feature.

Accompanying drawing explanation

Fig. 1 is pyrolysis cooking stove structural representation of the present utility model.

Fig. 2 is the schematic flow sheet using the utility model to carry out pyrolysis.

Fig. 3 is rotary drum-type pyrolysis reactor front view of the present utility model.

Fig. 4 is for along the A-A diagrammatic cross-section shown in Fig. 3.

Fig. 5 is for along the diagrammatic cross-section of B-B shown in Fig. 3.

Fig. 6 is the schematic diagram of the rotary drum-type pyrolysis reactor only having electric heat source.

Fig. 7 is device schematic diagram of the present utility model, is one and faces diagrammatic cross-section, shows formation, assembly structure and position relationship.

Embodiment

Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.In figure: rotary drum-type pyrolysis reactor 1, stator 1-1, stator casing 1-1-1, stator thermal insulation layer 1-1-2, rotor 1-2, rotor inner casing 1-2-1, rotor Internal baffle 1-2-2, rotor cap 1-2-3, rotatable gas joint 1-2-4, rotary air joint 1-2-5, rotor thermal insulation layer 1-2-6, rotor case 1-2-7, rotor gear 1-2-8, rotor gas outlet 1-2-9, rotor air entrance 1-2-10, drive-motor 1-3, electrothermal layer 1-4-1, electric radiation chamber 1-4-2, assemble sun exposure chamber 1-4-3, pressure lock 1-5, gas holder 2, gas holder fuel gas inlet 2-1, gas holder gas outlet 2-2, gas holder water supplement port 2-3, water compensating valve 2-4, water level gauge 2-5, gas-cooker 3, stove burner 3-1, stove burner fuel gas inlet 3-1-1, stove burner gas inlet 3-1-2, chamber of a kitchen range 3-2, chamber of a kitchen range exhanst gas outlet 3-2-1, cooking pot 3-3, variable valve 3-4, check valve 3-5, pressure lock 3-6, cleaning type waste-heated water-tank 4, waste-heated water-tank 4-1, water intaking valve 4-1-1, outlet valve 4-1-2, fly-ash separator 4-2, fly-ash separator ash disposal mouth 4-2-1, fly-ash separator inlet mouth 4-2-2, fly-ash separator air outlet 4-2-3, induced draft fan 4-4, controller 5, cooking stove cabinet 6, gas holder cabinet 6-1, kitchen range top cabinet 6-2, cabinet pulley 6-3, support roller 6-4, limited roller 6-5, gas blower 7.

Basic thought of the present utility model is by biomass pyrolytic and kind of the product of two after pyrolytic reaction (combustion gas and carbon residue) time segment (combustion gas at front, carbon residue rear) point place (combustion gas at stove burner, carbon residue at pyrolysis reactor) burning is continued or combine (the utility model is referred to as connection combustion) for cooking, to realize in a kind of smoke evacuation containing in tar, cooking stove not residual tar, the on fire and scarfing cinder of need not lighting a fire, increase cooking heat, use the method and apparatus of simple family gasifying range for biological substance.

The utility model provides a kind of rotary drum-type pyrolysis reactor to carry out high temperature pyrolysis reaction for biomass and pyrolysis terminates rear carbon residue oxidizing reaction, is therefore pyrolysis and combustion charcoal dual-purpose stove.Electric heating is used as pyrolysis thermal source with the one assembled in sun-fever or combination, in pyrolysis reactor, local gasification is used as " interior life " thermal source, make pyrolysis final temperature prevent tar from producing in a large number up to 600-1000 DEG C, expect that hot combustion gas a small amount of tar ingredients when stove burner combustion participates in burning and together changes cooking heat energy into.Substantially, adaptability to raw material only limits by pyrolysis space reactor, by adjustment pyrolysis temperature and time, coordinate pyrolysis reactor rotary rolling speed and intensity of milling, the biomass material pyrolysis rate of different sorts, different size, different water cut can be controlled, reach substantially identical cooking effect.

The utility model provides family technique for biomass pyrolysis carbon gas connection combusting range for cooking and heating, and the combustion gas that rotary drum-type pyrolysis reactor exports at times or combustion charcoal flue gas are also at follow-up link disposal and utilization.These follow-up links comprise: gas holder, and combustion gas or combustion charcoal flue gas enter gas holder at times to carry out storing and stable air pressure; Stove burner, combustion gas is joined air Thorough combustion wherein and is produced high-temperature flue gas; The chamber of a kitchen range, concentrates high-temperature flue gas; Cooking pot, cooking of having absorbed heat in the chamber of a kitchen range; Waste-heated water-tank, reclaims smoke discharging residual heat; Fly-ash separator, reclaims the ash content in smoke evacuation; Induced draft fan, for cooking stove provides induced air negative-pressure that flue gas is entered air; Gas blower, provides band pressure air to enable air enter cooking stove; Controller, for electric-controlled parts provides control signal.

Fig. 1 represents the schematic diagram of a formation of the present utility model and mutual relationship.The utility model comprises rotary drum-type pyrolysis reactor 1, gas holder 2, gas-cooker 3, cleaning type water tank 4, controller 5 and installs the cooking stove cabinet 6 of fixing above-mentioned formation.Pyrolysis reactor 1 receives the convergence daylight of solar energy collectors in order to direct heating reactor 1 inner casing an integral part of rotor (this inner casing just) by assembling sun exposure chamber 1-4-3, electrothermal layer 1-4-1 passes through electric radiation chamber 1-4-2 in order to electric radiation reactor heating 1 inner casing, decide to be used alone electric heating by concrete design, be used alone and assemble sun-fever or combinationally use this two kinds of thermals source, the thermal energy transfer received can make it that pyrolytic reaction generating gas and carbon residue occur to the biomass of its inside by inner casing.The gas inlet 1-2-10 of pyrolysis reactor 1 is communicated with air by pressure lock 1-5, pyrolysis reactor 1 needs input air in both cases, one is when needing " local gasification " interior heat-dissipating to reduce outside heat supply, when also one is burning carbon residue (the utility model is referred to as " combustion charcoal ") heat supply cooking.Gas outlet 1-2-9 and the gas holder 2 entrance 2-1 of pyrolysis reactor 1 communicate, gas holder 2 is provided with outlet 2-2 and is communicated by check valve 3-5 and variable valve 3-4 and stove burner 3-1 fuel gas inlet 3-1-1, is also provided with water supplement port 2-3 and communicated with water source by water compensating valve 2-4, Initial Stages of Pyrolysis variable valve 3-4 closes, and initial stage pyrolysis gas storage is in gas holder; Gas holder on the one hand mild aerogenesis and by the gap between gas, another aspect stablizes gaseous-pressure.Stove burner 3-1 is arranged on chamber of a kitchen range 3-2 bottom center, cooking pot 3-3 places and the upper opening of sealing chamber of a kitchen range 3-2, stove burner 3-1 is provided with air distribution entrance 3-1-1 and is communicated with air by pressure lock 3-6, stove burner 3-1 is by combustion gas and even air mixing, the appropriate excess air of general needs just in time makes combustion gas Thorough combustion, if the too little burning of air capacity can not be abundant, contain carbon black expended energy and outer pollution discharging air in flue gas, if air capacity is excessive will reduce cooking temperature.Also be provided with exhanst gas outlet 3-2-1 at chamber of a kitchen range 3-2 to be communicated by pipeline and fly-ash separator 4-2 entrance, fly-ash separator 4-2 is arranged on waste-heated water-tank 4-1 central authorities common composition cleaning type water tank 4, fly-ash separator 4-2 is provided with exhanst gas outlet and is communicated with induced draft fan 4-4 entrance by pipeline, induced draft fan 4-4 outlet communicates with air, fly-ash separator 4-2 is while pass to the water in the waste-heated water-tank 4-1 of outside by housing by interior empty cyclone dust removal while by the heat of smoke evacuation, fly-ash separator ash disposal mouth 4-2-1 is used for artificial or automatic ash-removing.Waste-heated water-tank 4-1 is provided with water-in and is communicated with water source by water valve 4-3, is provided with water outlet 4-1-1 and hot water outputted to outside and can be used for household to use.Controller 5 is connected with electric-controlled parts 1-5,2-4,3-6,4-1-1,4-1-2,4-4, controls air flow and flow, benefit/water intaking valve.Pyrolysis reactor 1 burn carbon residue time, combustion charcoal flue gas arrives the chamber of a kitchen range along blast tube, and obviously, combustion charcoal flue gas increases cooking heat energy on the one hand, removes the remaining tar remained in passage on the other hand, and cooking stove is encroached on from cooling tar (liquid state).

Fig. 2 represents a use concrete steps schematic flow sheet of the present utility model, the physical extent of empty wire frame representation pyrolysis reactor 1 in figure, and concrete steps flow process is as follows: manually send in pyrolysis reactor 1 by biomass, then closing lid sealing; Connect electric heating power supply and/or assemble day light source, pyrolysis reactor 1 heats up, and automatically keeps after reaching set(ting)value, the biomass pyrolytic Heat of Formation combustion gas in pyrolysis reactor 1 and hot carbon residue; Along with pyrolytic gasification accelerates, synthesis pressure rises; When synthesis pressure reaches set(ting)value, hot combustion gas flows to stove burner 3 by being incubated or being incubated constant voltage, controller 5 guides appropriate excess air to gas-cooker 3, hot combustion gas Thorough combustion, and the high-temperature flue gas that burning produces is realized cooking object by the cooking pot heat absorption utilization on chamber of a kitchen range upper opening; Flue gas is through cleaning type water tank 4 indirect heat exchange, and in water tank 4, water temperature rises, and flue-gas temperature declines; Flue gas after cooling, after cleaning type water tank 4 dedusting, pumps to air by induced draft fan and diffuses.After hot combustion gas is used up, disconnect electric heating power supply, controller 5 guides appropriate air to pyrolysis reactor 1, causes the hot carbon residue Thorough combustion in pyrolysis reactor 1, and the high-temperature flue gas that burning produces is realized cooking object by the cooking pot heat absorption utilization on chamber of a kitchen range upper opening; Flue gas is through cleaning type water tank 4 indirect heat exchange, and in water tank 4, water temperature rises, and flue-gas temperature declines; Flue gas after cooling, after cleaning type water tank 4 dedusting, pumps to air by induced draft fan and diffuses.In order to save external heat, after pyrolysis reactor 1 aerogenesis, guiding appropriate air in pyrolysis reactor 1 by controller 5, causing the hot combustion gas of part and burning at pyrolysis reactor 1, combustion product gases is assisted electric heating or is assembled the temperature that sun heat source maintains pyrolysis reactor 1.

In Fig. 1 and Fig. 2, biomass material includes but not limited to following raw material: one or more mixing of corn stalk, sorghum stalks, wheat straw, straw, beanstalk, cotton stalk, wood chip, rice husk, animal excretion etc.The kind of biomass and water ratio can affect composition and the calorific value that pyrolysis generates product, and in an experiment, biomass are wood chips, and water ratio 12%, the fuel gases calorific value of generation is 17.6MJ/Nm ³; In another experiment, biomass are husks, and water ratio 10%, the fuel gases calorific value of generation is 16.2MJ/Nm ³; In another experiment, biomass are corn stalk, water ratio 11% again, and the fuel gases calorific value of generation is 15.3MJ/Nm ³; Along with the increase of biomass water content, water heat absorption also obviously increases, water ratio is exceeded to the biomass material of more than 15%, a rational measure stops a period when being warmed up to 130-150 DEG C so that the moisture discharge vaporization of biomass, improves pyrolytic gasification efficiency; After in this water vapour to gas holder 2, during raising gas holder temperature, self cooling is condensed into water and supplements air accumulator seal water.The particle diameter of biomass is also the important factor affecting pyrolysis, when particle diameter increases, the restriction of mass-and heat-transfer rates on pyrolysis speed of response will exceed reaction kinetics factor, stir and mill and can accelerate the speed of pyrolysis, biomass disposable feeding quantity should be less than specified feeding quantity, reserves suitable space and be convenient to stir and mill in pyrolysis reactor.

Pyrolysis final temperature determines the most important factor of the coal-tar middle oil content of combustion gas, and more than 600 DEG C, temperature pyrolytic reaction can fully be carried out, and the faster tar content of the higher pyrolysis rate of temperature is less.In an experiment, pyrolysis final temperature is 600 DEG C, the tar content 16.6g/m in combustion gas ³, tar content 4.2g/m when reaching 850 DEG C in another experiment ³, then when reaching 1000 DEG C in another experiment, tar content reduces 90% than when 600 DEG C, the pyrolysis final temperature upper limit is obviously subject to the restriction of pyrolysis reactor material heatproof.

Pyrolysis product is combustion gas and carbon residue, and gas component is very complicated, mainly H ₂, CO, CH ₄, CO ₂deng, carbon residue comprises carbon, ash grades; In an experiment, under 850 DEG C of pyrolysis temperatures, the inflammable gas total concn of corn stalk is 79.39%, carbon residue is 18%, and in another experiment, under 850 DEG C of pyrolysis temperatures, the inflammable gas total concn of rice husk is 82.25%, carbon residue is 22%.When hot gaseous-pressure reaches set(ting)value, start to supply cooker, the another one method improving cooking flattening effect supplies cooker again after hot combustion gas is first stored in a constant-pressure gas storage cabinet, pressure depends on the design of pressure distribution in cooking stove system, jointly controlled by induced draft fan and check valve, generally can be designed as tiny structure (-8-0kpa) or jointly controlled by gas blower and check valve, generally can be designed as pressure-fired (0-+8kpa).

The oxidising process of biomass charcoal is gas-solid internal diffusion reaction mechanism, and burning is normally cleaned, and shows as invisible flue gas.Pyrolysis reactor inner casing 1-2-1 temperature be not less than in the 400-450 DEG C of carbon residue that ignites be effective, suitable the quoting of the utility model is that Zhuan Xiaowei etc. is published in " chemistry of forest product with industry " the 29th volume supplementary issue (in October, 2009) " analyses of 7 kinds of biomass charcoal combustioncharacteristicss " and shows, the kindling temperature of Chinese chestnut exocarp charcoal, oil tea exocarp charcoal, rice straw charcoal, hickory nut epicarp charcoal is respectively 352 DEG C, 357 DEG C, 375 DEG C, 393 DEG C.

Fig. 3 is the schematic diagram of expression rotary drum-type pyrolysis reactor of the present utility model, it was the section front elevational schematic in axes normal face, Fig. 4 is the schematic diagram of expression rotary drum-type pyrolysis reactor of the present utility model, it is the diagrammatic cross-section of A-A shown in Fig. 3, Fig. 5 is the schematic diagram of expression rotary drum-type pyrolysis reactor of the present utility model, is the diagrammatic cross-section of B-B shown in Fig. 3.In Fig. 3 Fig. 4 Fig. 5, rotary drum-type pyrolysis reactor comprises stator 1-1, rotor 1-2, drive-motor 1-3 and pyrolysis heating unit, rotor 1-2 is sleeved on stator 1-1 central authorities, two is exposed outside stator 1-1, rotor 1-2 shell 1-2-7 is provided with gear 1-2-8, the gear coupling on this gear and motor 1-3 axle.Stator 1-1 is hollow cylindrical structure, comprises shell 1-1-1, thermal insulation layer 1-1-2; Pyrolysis heating unit comprises electrothermal layer 1-4-1, electric radiation chamber 1-4-2, assembles sun exposure chamber 1-4-3; Thermal insulation layer 1-1-2 is fixed on inside shell 1-1-1, electrothermal layer 1-4-1 is fixed on inside thermal insulation layer 1-1-2, electric radiation chamber 1-4-2 is the space between electrothermal layer 1-4-1 and inner casing 1-2-1, assemble sun exposure chamber 1-4-3 be on stator 1-1 to exterior open cell with make inner casing 1-2-1 can part directly by outside assemble sun exposure the space that formed.Rotor 1-2 comprises inner casing 1-2-1, baffle plate 1-2-2, block 1-2-3, gas rotary adapter 1-2-4, air swivel joint 1-2-5, thermal insulation layer 1-2-6, shell 1-2-7, inner casing 1-2-1 inwall is fixed with one or more baffle plate 1-2-2, inner casing 1-2-1 vertically side vertical surface connects cap 1-2-3, opposite side connects gas rotary adapter 1-2-4 and air swivel joint 1-2-4, inner casing 1-2-1 is sleeved on after among stator 1-1 and fixes thermal insulation layer 1-2-6, the outside fixed housing 1-2-7 of thermal insulation layer 1-2-6 outside exposed portion, two.

Heat insulating inside the stator casing 1-1-1 of rotary drum-type pyrolysis reactor 1, the heat energy of electrothermal layer 1-4-1 and/or convergence sun exposure chamber 1-4-3 can only pass to the inner casing 1-2-1 of rotor to axis centre, heat energy all transmits in infrared radiation mode, the heat energy that inner casing 1-2-1 outer wall receives passes to biomass by inwall, because inner casing 1-2-1 is along with rotor 1-2 integral-rotation, biomass are stirred in inner casing 1-2-1, if be placed with mill ball or catalysis in inner casing 1-2-1 to mill ball, biomass can be stirred to add and mill, biomass are subject to mass-and heat-transfer and erosion is burnt, therefore pyrolysis rate is more much higher than fixed bed, tar content is also much smaller.The inner casing one of rotor is dog-house, sealed by block 1-2-3 after feeding intake, other end is that gas outlet 1-2-9 and gas inlet 1-2-10, gas inlet 1-2-10 radius is greater than fuel gas inlet 1-2-9 radius and coaxial line concentric locking collar is fitted together, for exporting combustion gas and input air.

Pyrolysis reactor function born by rotary drum-type pyrolysis reactor 1 in pyrolytic process, after pyrolysis terminates, rotary drum-type pyrolysis reactor is residual heat carbon residue also, cause carbon residue burning from gas inlet 1-2-10 introducing air, at this moment hot char combustion device function born by rotary drum-type pyrolysis reactor 1.Combustion processes rotor 1-2 rotates, and carbon residue can be stirred to add and mill, and rate of combustion can be accelerated, and burns more thorough; The high-temperature flue gas of carbon residue burning can cracking residual tar, plays scavenging(action).For making carbon residue sufficient combustion, inner casing 1-2-1 Internal baffle 1-2-2 is sandwich structure, and interlayer inner chamber communicates with rotor air entrance 1-2-10, and two folder faces are provided with appropriate wind distributing hole, and it is more even that these wind distributing holes can make solid and gas mix.

The thermal load power influences pyrolysis temperature climbing speed of electrothermal layer 1-4-1 and/or convergence sun exposure chamber 1-4-3, power 3kw, pyrolysis rise time 10min in a test, power 1kw, pyrolysis rise time 30min in another test.Preferably, test proves that the heat flux of solar collector is at about 1000kw/m ²time shown enough can to heat rotor inner casing to the temperature between 800 and 1200 DEG C.

The speed of rotation of pyrolysis reactor and pyrolytic reaction speed, the positive correlation of carbon residue rate of combustion, ball or catalysis ball of milling of milling can be accelerated pyrolysis, carbon residue rate of combustion and reduce tar content, placing mill ball, speed of rotation of 50 0.5cm in a test is 2rid/min, heat outputting power 3.3kw, placing mill ball, speed of rotation of 100 0.3cm in another test is 20rid/min, heat outputting power 4.9kw.

Fig. 6 is the schematic diagram of expression rotary drum-type pyrolysis reactor of the present utility model, be one only have electric heating and do not assemble sun-fever as pyrolysis thermal source reactor face diagrammatic cross-section.In figure, stator 1-1 is horizontal to be directly fixed on cooking stove cabinet 6 base plate, rotor is retrained by two support roller 6-4 and limited roller 6-5, makes to there is not contact force between rotor 1-2 and stator 1-1, and rotor is driven by drive-motor 1-3 and do not rotate by any obstacle of stator.Other parts are identical with Fig. 3.

In embodiments, rotor inner casing rational material selection is high temperature resistant stainless steel 04Cr25Ni20Si2 or cast steel ZG04Cr25Ni20Si2.In other embodiments, also the materials such as graphite, silicon carbide, pyroceramic, yttrium oxide, zirconium white, silicon nitride can be selected.

Fig. 7 is the schematic diagram of the utility model device, and what show formation, assembly structure and position relationship faces diagrammatic cross-section.In figure, cooking stove cabinet 6 is connected by gas holder cabinet 6-1 and kitchen range top cabinet 6-2 and forms, such structure considers the convenience of hot combustion gas insulation, the unchangeability of structure time simultaneously also in order to keep omitting gas holder, when omitting gas holder only need former for gas holder inlet and outlet piping directly to connect connection, device still has independence.

The workflow of the utility model device is: reinforced, manually opens the reinforced rear closing lid of block 1-2-3 of rotary drum-type pyrolysis reactor 1; Start, open electrothermal layer 1-4-1 and/or assemble sun exposure chamber 1-4-3 and heat to inner casing 1-2-1, the inner casing 1-2-1 of rotary drum-type pyrolysis reactor 1 heats up, and automatically keeps after reaching set(ting)value; Pyrolysis, rotor 1-2 continues to rotate, ball comminuting matter particle of milling, and pyrolytic gasification accelerates, and inner casing 1-2-1 internal pressure rises; Gas storage, gas flow gas holder 2 in inner casing 1-2-1 when inner casing 1-2-1 internal pressure reaches set(ting)value; Air feed, gas holder is to gas-cooker 3 air feed, and when rotary drum-type pyrolysis reactor 1 gas production rate is greater than gas-cooker 3 usage quantity, gas holder 2 bell jar rises, otherwise declines, thus gaseous-pressure constant voltage before ensureing stove; Cooking, stove burner 3-1 burns and produces high-temperature flue gas and assemble in chamber of a kitchen range 3-2 and to have been absorbed heat cooking by cooking pot 3-3, adjusts heating power size by variable valve 3-4 adjustment of combustion gas flow; Waste heat, flue gas is through waste-heated water-tank 4-1 indirect heat exchange, and water temperature rises, and warm water can be used for needed for life; Flue gas, the flue gas after cooling, after fly-ash separator 4-2 dedusting, pumps to air by induced draft fan 4-4 and diffuses; Conversion, after combustion gas is used up, closes electrothermal layer 1-4-1 and assembles sun exposure chamber 1-4-3, and controller 5 is led gas blower 7 and stopped transferring to rotary drum-type pyrolysis reactor 1 input air to gas-cooker 3 input air; Combustion charcoal, air enters rotary drum-type pyrolysis reactor 1, and carbon residue burns, and flue gas induced draft fan 4-4 after complete trails heat energy utilization is evacuated to air and diffuses; Terminate, after carbon residue all burnt, this cooking terminates; Close, induced draft fan 4-4 continues exhausting until temperature of reactor is closed after being down to security interval, uses in order to next time.

For simple type, gas holder configuration can be cancelled.So, in the workflow of said apparatus, gas storage and air feed two links no longer exist, and the hot combustion gas of pyrolysis reactor 1 directly leads to gas-cooker 3 by check valve 3-5 and variable valve 3-4, and other are constant.Simple type device, must namely produce i.e. use, gas flow and pressure have fluctuation, and the advantage brought is that cooking stove volume significantly reduces, cost reduces.

Import the convergence solar source of convergence sun exposure chamber 1-4-3 in external solar collector, example for applicable solar collector of the present utility model is Golden, the National Renewable Energy Laboratory (National Renewable Energy Laboratory of Colorado, NREL) High-Flux Solar Furnace (high-throughput solar furnace, HFSF).HFSF uses the enhancing focused beam that daylight is pooled diameter about 10 centimetres by a series of mirror, power level is 10kw.HFSF is at Lewandowski, Bingham, O ' Gallagher, Winston and Sagie, " Performance characterization of the SERI Hi-Flux Solar Furnace ", describes in Solar Energy Materials 24 (1991), 550-563.

Specific embodiment described in this specification sheets is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.

Although more employ rotary drum-type pyrolysis reactor 1 herein, stator 1-1, stator casing 1-1-1, stator thermal insulation layer 1-1-2, rotor 1-2, rotor inner casing 1-2-1, rotor Internal baffle 1-2-2, rotor cap 1-2-3, rotatable gas joint 1-2-4, rotary air joint 1-2-5, rotor thermal insulation layer 1-2-6, rotor case 1-2-7, rotor gear 1-2-8, rotor gas outlet 1-2-9, rotor air entrance 1-2-10, drive-motor 1-3, electrothermal layer 1-4-1, electric radiation chamber 1-4-2, assemble sun exposure chamber 1-4-3, pressure lock 1-5, gas holder 2, gas holder fuel gas inlet 2-1, gas holder gas outlet 2-2, gas holder water supplement port 2-3, water compensating valve 2-4, water level gauge 2-5, gas-cooker 3, stove burner 3-1, stove burner fuel gas inlet 3-1-1, stove burner gas inlet 3-1-2, chamber of a kitchen range 3-2, chamber of a kitchen range exhanst gas outlet 3-2-1, cooking pot 3-3, variable valve 3-4, check valve 3-5, pressure lock 3-6, cleaning type waste-heated water-tank 4, waste-heated water-tank 4-1, water intaking valve 4-1-1, outlet valve 4-1-2, fly-ash separator 4-2, fly-ash separator ash disposal mouth 4-2-1, fly-ash separator inlet mouth 4-2-2, fly-ash separator air outlet 4-2-3, induced draft fan 4-4, controller 5, cooking stove cabinet 6, gas holder cabinet 6-1, kitchen range top cabinet 6-2, cabinet pulley 6-3, support roller 6-4, limited roller 6-5, term such as gas blower 7 grade, but do not get rid of the possibility using other term.Using these terms, is to describe more easily and explaining essence of the present utility model; The restriction that they are construed to any one additional is all contrary with the utility model spirit.

Claims (9)

1. a family technique for biomass pyrolysis carbon gas joins combusting range, comprise: pyrolysis reactor (1), the gas-cooker (3) be connected with the gas outlet (1-2-9) of pyrolysis reactor (1), it is characterized in that, described pyrolysis reactor (1) also comprises a gas inlet (1-2-10).

2. family according to claim 1 technique for biomass pyrolysis carbon gas joins combusting range, it is characterized in that, described pyrolysis reactor (1) is rotary drum-type pyrolysis reactor, comprise: stator (1-1), the rotor (1-2) be sleeved on stator (1-1), the motor (1-3) rotated for driving rotor (1-2), be positioned at the pyrolysis heating unit on stator (1-1), wherein:

Described stator (1-1), in hollow cylindrical structure, comprises stator casing (1-1-1) and is fixed on the stator thermal insulation layer (1-1-2) inside shell (1-1-1);

Described rotor (1-2) comprises rotor inner casing (1-2-1), block (1-2-3), gas rotary adapter (1-2-4), air swivel joint (1-2-5), thermal insulation layer (1-2-6), rotor case (1-2-7), rotor inner casing (1-2-1) inwall is fixed with one or more baffle plate (1-2-2), rotor inner casing (1-2-1) vertically side vertical surface connects cap (1-2-3), opposite side connects gas rotary adapter (1-2-4) and air swivel joint (1-2-5), on the gas outlet (1-2-9) that described gas rotary adapter (1-2-4) and air swivel joint (1-2-5) are socketed in pyrolysis reactor (1) respectively and gas inlet (1-2-10), described rotor inner casing (1-2-1) is sleeved on after among stator (1-1) and fixes thermal insulation layer (1-2-6), outside fixed rotor shell (1-2-7) of thermal insulation layer (1-2-6) outside exposed portion, two.

3. family according to claim 2 technique for biomass pyrolysis carbon gas joins combusting range, it is characterized in that, described pyrolysis heating unit is electric heater unit, comprise: electrothermal layer (1-4-1), electric radiation chamber (1-4-2), wherein: electrothermal layer (1-4-1) is fixed on stator thermal insulation layer (1-1-2) inner side, and electric radiation chamber (1-4-2) is the space between electrothermal layer (1-4-1) and rotor inner casing (1-2-1).

4. family according to claim 2 technique for biomass pyrolysis carbon gas joins combusting range, it is characterized in that, described pyrolysis heating unit is for assembling day optical heating device, comprise assemble sun exposure chamber (1-4-3), described convergence sun exposure chamber (1-4-3) be on stator (1-1) to exterior open cell with make inner casing (1-2-1) can part directly be assembled sun-exposed space by outside.

5. family according to claim 2 technique for biomass pyrolysis carbon gas joins combusting range, it is characterized in that, the Internal baffle (1-2-2) of described rotor inner casing (1-2-1) is sandwich structure, and interlayer inner chamber communicates with the gas inlet of rotor, and two folder faces are provided with appropriate wind distributing hole.

6. family according to claim 1 technique for biomass pyrolysis carbon gas joins combusting range, it is characterized in that, described pyrolysis reactor (1) is rotary drum-type pyrolysis reactor, and it is built-in with mill in right amount ball or catalysis and mills ball.

7. family according to claim 1 technique for biomass pyrolysis carbon gas joins combusting range, it is characterized in that, also comprise the gas holder (2) that fuel gas inlet (2-1) is connected with the gas outlet (1-2-9) of pyrolysis reactor (1), described gas holder (2) also comprises a water supplement port communicated with water source (2-3).

8. family according to claim 1 technique for biomass pyrolysis carbon gas joins combusting range, it is characterized in that, described gas-cooker (3) comprises stove burner (3-1), the chamber of a kitchen range (3-2), be positioned over the cooking pot (3-3) on the chamber of a kitchen range (3-2), described stove burner (3-1) is arranged on the chamber of a kitchen range (3-2) bottom, the chamber of a kitchen range (3-2) upper opening seals by described cooking pot (3-3), the air distribution entrance (3-1-2) of described stove burner (3-1) communicates with air, fuel gas inlet (3-1-1) communicates with the gas outlet (2-2) of gas holder (2).

9. family according to claim 1 technique for biomass pyrolysis carbon gas joins combusting range, it is characterized in that, also comprise cleaning type waste-heated water-tank (4), described cleaning type waste-heated water-tank (4) comprises waste-heated water-tank (4-1), the fly-ash separator (4-2) be arranged in waste-heated water-tank (4-1), and the exhanst gas outlet (3-2-1) of described gas-cooker (3) is communicated with air by fly-ash separator (4-2).