CN106978215A - A kind of two-stage type biomass pyrolytic gasification revolving bed and pyrolysis gasification method - Google Patents

A kind of two-stage type biomass pyrolytic gasification revolving bed and pyrolysis gasification method Download PDF

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Publication number
CN106978215A
CN106978215A CN201710240698.8A CN201710240698A CN106978215A CN 106978215 A CN106978215 A CN 106978215A CN 201710240698 A CN201710240698 A CN 201710240698A CN 106978215 A CN106978215 A CN 106978215A
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China
Prior art keywords
gasification
section
revolving bed
gas
gasification section
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CN201710240698.8A
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Chinese (zh)
Inventor
房凯
巴玉鑫
吴小飞
王惠惠
牛明杰
吴道洪
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Beijing Shenyuan Environmental Protection Co Ltd
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Beijing Shenyuan Environmental Protection Co Ltd
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Priority to CN201710240698.8A priority Critical patent/CN106978215A/en
Publication of CN106978215A publication Critical patent/CN106978215A/en
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/58Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
    • C10J3/60Processes
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72Other features
    • C10J3/721Multistage gasification, e.g. plural parallel or serial gasification stages
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J3/00Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
    • C10J3/72Other features
    • C10J3/725Redox processes
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
    • C10J2300/00Details of gasification processes
    • C10J2300/09Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
    • C10J2300/0903Feed preparation
    • C10J2300/0909Drying

Abstract

The present invention relates to a kind of two-stage type biomass pyrolytic gasification revolving bed and pyrolysis gasification method.In a ring, shell includes furnace roof, circumferential furnace wall and stone or metal plate for standing a stove on as a precaution against fire to the shell of revolving bed, and furnace roof is fixedly connected with circumferential furnace wall, and stone or metal plate for standing a stove on as a precaution against fire can be horizontally rotated with respect to furnace roof with circumferential furnace wall;Furnace roof, circumferential furnace wall and stone or metal plate for standing a stove on as a precaution against fire surround to form burner hearth, and burner hearth is circumferentially divided into two sections:First gasification section and the second gasification section, include circumferential dry section, pyrolysis zone, zoneofoxidation and the reducing zone being sequentially connected, the reducing zone of first gasification section connects with the dry section of the second gasification section and is provided with the first dividing plate, and the reducing zone of the second gasification section connects with the dry section of the first gasification section and is provided with second partition;Furnace roof is provided with the first air intlet, the second air intlet, the first gasification gas outlet, the second gasification gas outlet, first charging aperture, second charging aperture, the outlet of the first lime-ash, the outlet of the second lime-ash.The present invention improves the yield of gasification furnace and the quality of pyrolysis gas, realizes on disk continuous feed and runs.

Description

A kind of two-stage type biomass pyrolytic gasification revolving bed and pyrolysis gasification method
Technical field
The present invention relates to environmental technology field, more particularly to a kind of two-stage type biomass pyrolytic gasification revolving bed and pyrolysis gas Change method.
Background technology
The annual yield of biomass in the world has 146,000,000,000 tons, and biomass turns into the global the fourth-largest energy.Compared to conventional fossil energy Source, biomass energy has relatively low oxysulfide (SOx), nitrogen oxides (NOx) yield and oxycarbide (COx) net in use Discharge capacity is the advantage such as zero.Existing a variety of biomass transformation technologies, wherein because method for pyrolysis can be drawn from biomass air-liquid, Gu three-phase energy products, in recent decades by concern both domestic and external, to be allowed to substitute petroleum-based energy, alleviate modern energy and use To the dependence of oil.
Biomass pyrogenation gasification can be divided into fixed-bed gasification furnace, fluidized-bed gasification furnace according to furnace binding and carry bed gasification Three kinds of stove, wherein fixed-bed gasification furnace can be divided into down-draft type gasifying furnace and uniflow gas stove, and fluidized-bed gasification furnace can be divided into list Fluidized gasification and recirculating fluidized bed gasification, carry a kind of special case that bed is fluid bed.
Fixed-bed gasification furnace is simple to manufacture, operating cost is low, but gasification is difficult to control, the intensity of gasification and gasification energy Power is relatively low, and material is easily put up a bridge in stove and forms cavity;Fluidized-bed gasification furnace heat and mass compared with fixed-bed gasification furnace Efficiency high, still, flue gas exit temperature are higher, and the sensible heat loss that gas is taken away is big, and because particle is tiny, fluidization rate compared with Height, causes substantial amounts of solid matter to be taken out of with flue gas, meanwhile, start and control more complicated;Circle fluidized-bed gasification furnace can be obvious Improve fluidization rate and do not result in the loss of solid matter, but its return-flow system controls more difficult, solid to hold in reflux course Feed opening blocking is easily caused, causes regular blowing out to be cleared up.
Comprehensive existing three kinds of gasification furnaces, the shortcoming for giving prior art is as follows:
Fixed gasification furnace relies on the carry out gasification reaction of biomass self gravitation from top to bottom, because the heap of biomass is close Degree is smaller, causes fixed-bed gasification furnace production capacity smaller, it is impossible to which manual control reaction rate, automaticity is low, it is more difficult to for big The successional industrialized production of scale.
Fluid bed can produce substantial amounts of flying dust in the process of running, in the lower flying dust accumulation that works long hours, cause heat transfer to imitate Rate is reduced and secondary pollution, and influences to be pyrolyzed efficiency.
Feeding/discharge mechanism is arranged in fluid bed furnace body, can be caused because of feeding/discharge mechanism described in material frictional impact It is impaired, increase maintenance frequency;And destroy gas in fluid bed to flow, cause fluid bed fluctuation of service.
Thing charcoal produced by equipment is simultaneously underused, pursue production charcoal cause volatile matter reaction it is not thorough, cause pyrolysis gas without Method is self-sustaining, needs outer benefit fossil energy.
Therefore, in order to solve pyrolytic gasification in existing gasification furnace it is poorly efficient can, it is low without controllable reaction speed and automaticity The problem of, it is necessary to propose that a kind of manufacture is easy, cost is low, simple to operate controllable, can two sections of one kind that continuously high intensity is run The revolving bed device and method of formula biomass pyrolytic direct gasification.
The content of the invention
In view of the above-mentioned problems, the present invention is intended to provide revolving bed device and the side of a kind of two-stage type biomass pyrolytic gasification Method, to improve the yield of gasification furnace and the quality of pyrolysis gas, realizes on disk continuous feed and runs.
The present invention provides a kind of two-stage type biomass pyrolytic gasification revolving bed, and the profile of the revolving bed is in a ring, described The shell of revolving bed includes furnace roof, circumferential furnace wall and stone or metal plate for standing a stove on as a precaution against fire successively from top to bottom, and the furnace roof and the circumferential furnace wall are fixed and connected Connect, the stone or metal plate for standing a stove on as a precaution against fire can relatively described furnace roof and circumferential furnace wall horizontal rotation;The furnace roof, circumferential furnace wall and stone or metal plate for standing a stove on as a precaution against fire surround to form institute The burner hearth of revolving bed is stated, wherein, the burner hearth is circumferentially divided into two sections, is the first gasification section and the second gasification section, described first Gasification section and the second gasification section include circumferential dry section, pyrolysis zone, zoneofoxidation and the reducing zone being sequentially connected, first gas The reducing zone for changing section connects with the dry section of second gasification section and is provided with the first dividing plate, the reducing zone of second gasification section Connect with the dry section of first gasification section and be provided with second partition;The furnace roof is provided with the first air intlet, the second sky Gas import, the first gasification gas outlet, the second gasification gas outlet, first charging aperture, second charging aperture, the outlet of the first lime-ash, second Lime-ash is exported, and first air intlet is connected with the dry section of first gasification section;Second air intlet with it is described The reducing zone of second gasification section is connected;The first gasification gas outlet is connected with the reducing zone of first gasification section, and described the Two gasification gas outlets are connected with the dry section of second gasification section;The drying of the first charging aperture and first gasification section Area is connected;The second charging aperture is connected with the dry section of second gasification section;The first lime-ash outlet and described first The reducing zone of gasification section is connected;The second lime-ash outlet is connected with the reducing zone of second gasification section.
Above-mentioned revolving bed, the periphery of the stone or metal plate for standing a stove on as a precaution against fire is provided with a circle side shield, the lower edge of the side shield and the circumference The water sealed tank of furnace wall is sealed using water seal, and the neck of the furnace roof is stretched on the upper edge of the side shield.
Above-mentioned revolving bed, first air intlet is connected with second air intlet by external pipe.
Above-mentioned revolving bed, the first gasification gas outlet is connected with the described second gasification gas outlet by external pipe.
Above-mentioned revolving bed, the first lime-ash outlet exports external ash discharge slag equipment with the second lime-ash.
Above-mentioned revolving bed, the stone or metal plate for standing a stove on as a precaution against fire can relatively described furnace roof be rotated clockwise with circumferential furnace wall level.
Above-mentioned revolving bed, first dividing plate and the second partition are breathable membrane.
The present invention also provides one kind and utilizes above-mentioned two-stage type biomass pyrolytic gasification revolving bed to carry out biomass pyrogenation gasification Method, comprise the following steps:
Biomass material is added by first charging aperture and second charging aperture respectively, it is described under the drive of the stone or metal plate for standing a stove on as a precaution against fire The material of first gasification section and the second gasification section is gradually moved to reducing zone by respective dry section;
The air of first gasification section is sent into by its dry section, successively back through pyrolysis zone, zoneofoxidation and reduction Area, the gasification gas produced is suctioned out from the reducing zone of first gasification section;
The air of second gasification section is sent into by its reducing zone, the oxidation of second gasification section is advanced past successively Area, pyrolysis zone and dry section, the gasification gas produced are suctioned out from the dry section of second gasification section.
Above-mentioned method, further also includes:
In first gasification section and the second gasification section, the raw material having just enter into is dried in first dry section and second Area is dried respectively;
Go out the dried volatility of raw material in the pyrolysis zone of the pyrolysis zone of first gasification section and the second gasification section Gas componant.
Above-mentioned method, methods described also includes step:In second gasification section, make the gas that reduction reaction is generated with Discharged after the volatilization gas mixing that pyrolysis is produced by the described second gasification gas outlet.
The present invention can avoid the biomass bridging phenomenon that fixed-bed gasification furnace occurs, and the gasification only carried out by gravity Reaction, substantially increases the quality of the efficiency of biomass pyrogenation gasification and the gas that gasifies, realizes its continuous operation on disk, Improve the yield of gasification furnace and the quality of pyrolysis gas simultaneously.
Brief description of the drawings
Fig. 1 is two-stage type biomass pyrolytic gasification revolving bed overlooking the structure diagram of the embodiment of the present invention;
Fig. 2 is two-stage type biomass pyrolytic gasification revolving bed cross section structure schematic diagram of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and examples, the embodiment to the present invention is described in more details, so as to energy Enough more fully understand the advantage of the solution of the present invention and various aspects.However, specific embodiments described below and implementation Example is only the purpose of explanation, rather than limitation of the present invention.
The purpose of technical solution of the present invention is the quality of the yield and pyrolysis gas that improve biomass pyrogenation gasification stove, is easy to reality Continuous feed and run on present disk.The mentality of designing of the present invention is will to be pyrolyzed downflow type and reverse-flow combination, that is, is entered Material mouth is adjacent with charging aperture, and air inlet is adjacent with air inlet, and the outlet of gasification gas is adjacent with the outlet of gasification gas, can be with multistage biomass Pyrolysis is carried out simultaneously, and is pyrolyzed in the way of rotational flow.Herein only by following current and adverse current two sections exemplified by, may also set up three sections, Four sections etc. pyrolysis sections, if downflow type with it is reverse-flow end to end, belong to technical scheme scope.
A kind of two-stage type biomass pyrolytic gasification revolving bed device and method of the present invention, its preferably embodiment is as schemed 1st, shown in Fig. 2.Fig. 1 is the two-stage type biomass pyrolytic gasification revolving bed device top view in the embodiment of the present invention, and Fig. 2 is Two-stage type biomass pyrolytic gasification rotary hearth furnace body section figure in the present invention.Two-stage type biomass pyrolytic gasification revolving bed, institute State the profile of revolving bed in a ring, its shell includes furnace roof 23, circumferential furnace wall 9 and stone or metal plate for standing a stove on as a precaution against fire 10, the furnace roof successively from top to bottom 23 are fixedly connected with the circumferential furnace wall 9, the stone or metal plate for standing a stove on as a precaution against fire 10 can relatively described furnace roof 23 horizontally rotated with circumferential furnace wall 9;It is described Furnace roof 23, circumferential furnace wall 9 and stone or metal plate for standing a stove on as a precaution against fire 10 surround the burner hearth 19 for forming the revolving bed.The stone or metal plate for standing a stove on as a precaution against fire 10 can relatively described furnace roof 23 It is rotated clockwise with the circumferential level of furnace wall 9.
Wherein, the burner hearth 19 is circumferentially divided into two sections, is the first gasification section and the second gasification section, first gasification section Include dry section 3 and 13, pyrolysis zone 4 and 14, zoneofoxidation 5 and 15 and reducing zone 6 and 16 respectively with the second gasification section, every section dry Dry area, pyrolysis zone, zoneofoxidation and reducing zone are circumferentially sequentially connected.The reducing zone 6 of first gasification section and second gas The dry section 3 for changing section connects and provided with the first dividing plate, and the reducing zone 16 of second gasification section is dry with first gasification section Dry area 3 connects and provided with second partition.The reaction in the region largely occurs for material in respective region, but has portion in practice Material is divided staggeredly to carry out in above process.
The furnace roof 23 gasifies provided with the first air intlet 2, the second air intlet 17, first gasification gas outlet 7, second Gas outlet 12, first charging aperture 1, second charging aperture 11, the first lime-ash export the 8, second lime-ash outlet 18.
First air intlet 2 is connected with the dry section 3 of first gasification section;Second air intlet 17 and institute The reducing zone 16 for stating the second gasification section is connected.
The first gasification gas outlet 7 is connected with the reducing zone 6 of first gasification section, the second gasification gas outlet 12 It is connected with the dry section 13 of second gasification section.
First air intlet 2 can be connected with second air intlet 17 by external pipe.
The first gasification gas outlet 7 can be connected with the described second gasification gas outlet 12 by external pipe.
Charging aperture is connected with each section of dry section, is located at the top of revolving bed, is fed using spiral, can control feed rate, So as to the density of regulating stove endogenous substance.
The first charging aperture 1 is connected with the dry section 3 of first gasification section;The second charging aperture 11 and described the The dry section 13 of two gasification sections is connected.
Reducing zone of the lime-ash outlet with each section is connected, and the first lime-ash outlet 8 and the outlet 18 of the second lime-ash are external Ash discharge slag equipment.Specifically can be by ash discharge slag outside double helix, the lime-ash of discharge can external multistage auger cooling or recovery heat.
The first lime-ash outlet 8 is connected with the reducing zone 6 of first gasification section;The second lime-ash outlet 18 and institute The reducing zone 16 for stating the second gasification section is connected.
The periphery of the stone or metal plate for standing a stove on as a precaution against fire 10 provided with one circle side shield, the side shield it is lower along water seal knife 22 and the circumferential furnace wall 9 water sealed tank 20 is sealed using water seal, and the neck 21 of the furnace roof is stretched on the upper edge of the side shield.
First gasification section and the second gasification section, two sections join end to end, and are separated in junction with dividing plate, form ring-type, but not Sealing, it is ensured that the without hindrance circulation of air-flow.Two-stage structure is identical, in the opposite direction, the moving direction and gas of the first gasification section material Flow direction is identical, suctions out gasification gas in the way of following current in stove;Second gasification section material moving direction and air current flow side To on the contrary, suctioning out gasification gas in a counter-current fashion in stove.
First dividing plate and the second partition can be breathable membrane.
The revolving bed two-stage type biomass pyrolysis gasification method of the present embodiment, comprises the following steps:
Biomass material is added by the charging aperture of every section of gasification section, under the drive of stone or metal plate for standing a stove on as a precaution against fire, gradually by pyrolytic gasification front end It is moved to pyrolysis tail end.Wherein front end is followed successively by dry section, pyrolysis zone, zoneofoxidation and reducing zone to the pyrolytic gasification area of tail end.
First gasification section air is entered by front end, and back through each reaction zone, gasification gas is suctioned out from afterbody;Second gasification Section air is entered by afterbody, is advanced past each reaction zone, and gasification gas is suctioned out from front end;Two gasification sections are empty by same pipeline Gas, the gasification gas of output is exported by same pipeline.
The raw material for having just enter into gasification furnace runs into the thermal current of front end diffusion, is dried first, sloughs moisture, in pyrolysis zone Start the gas constituents that volatilize;Embodiments in accordance with the present invention, pyrolysis zone temperature is 200-250 DEG C;
Volatile matter enters zoneofoxidation with air, and with air incomplete oxidation reaction occurs for coke and volatile matter;According to this hair Bright embodiment, the local temperature in zoneofoxidation stove is up to 1000 DEG C.
After first gasification section oxygen depletion, start reduction reaction immediately, biomass pyrolytic residual coke is by two in gas Carbonoxide and aqueous vapour reducing are that the flammable gasification gas of the fuel gas such as carbon monoxide, methane and hydrogen is arranged by the outlet of afterbody gasification gas Go out;With carbon dioxide and vapor reduction reaction, generation occur for the red-hot coke of the second gasification section biomass pyrolytic residue high temperature Carbon monoxide, methane and hydrogen, the combustible gas of generation mixed with the volatile matter that the second pyrolysis zone is pyrolyzed after by front end gasification gas Draw outside stove outlet.
During pyrolytic gasification, material first is after simple process, by gasification revolving bed first charging aperture 1 and second charging aperture 11 Revolving bed the first dry section 3 and the second dry section 13 are sent into, material is moved with stone or metal plate for standing a stove on as a precaution against fire 10, and gasifying agent is air, by a house steward It is divided into two and enters revolving bed from the first air intlet 2 and the second air intlet 17 respectively.In dry section, the material containing moisture With the heat progress heat exchange discharged in reaction so that the moisture evaporation in material is gone out, before this evaporation of outside water, followed by The evaporation of inherent water.According to embodiments of the present invention, if material particular diameter is larger, its inherent moisture still has residual.Dry section temperature For 50~150 DEG C, its product is mainly vapor and dry material.Adsorbed in the first gasification section vapor in the strength of outside air pump Under rearwardly move, dry material is also rearwardly moved under the drive of stone or metal plate for standing a stove on as a precaution against fire 10.In the second gasification section vapor in outside air pump The lower forward end movement of strength absorption, dry material rearwardly moves under the drive of stone or metal plate for standing a stove on as a precaution against fire 10.
In the first gasification section, dry material, vapor and gasifying agent air from the first dry section 3 enter the first pyrolysis zone 4, and pyrolytic reaction takes place using the heat from the first zoneofoxidation 5, volatilize hydrogen, methane, carbon monoxide, tar etc. Gas, and discharge heat.Volatilization gas continues rearwardly to move under outside air pump strength suction-operated, the biomass being pyrolyzed out Charcoal with stone or metal plate for standing a stove on as a precaution against fire 10, rearwardly move by the first reducing zone 6.But in the second gasification section, the dry material from the second dry section 13 enters Two pyrolysis zones 14, and pyrolytic reaction takes place using the heat from the second zoneofoxidation 15.The hydrogen that volatilizes, methane, one The gas such as carbonoxide and tar enters the second dry section 13 in the presence of strength absorption, is then led by the second gasification gas outlet 12 Go out revolving bed, the biomass carbon being pyrolyzed out rearwardly moves into the second reducing zone 16 with stone or metal plate for standing a stove on as a precaution against fire 10.
In the first gasification section, thermal decomposition product enters the first zoneofoxidation 5 together with vapor and gasifying agent air, and temperature gradually rises Height, according to embodiments of the present invention, when temperature is at 250~300 DEG C, the relatively low volatile matter gas of ignition point is ignited, while burnt With air imperfect combustion occurs for charcoal, carbon monoxide, carbon dioxide and vapor is produced, while discharging substantial amounts of heat so that The maximum temperature of first zoneofoxidation 5 can be to more than 1000 DEG C, and this heat is the pyrolysis of the dry material of the first pyrolysis zone 4 and the first dry section The drying of 3 wet stocks provides thermal source.
But in the second gasification section, it is anti-that with the oxygen in air incomplete oxidation occurs for volatile matter and a part of biomass coke Should so that local temperature is rapidly reached more than 1000 DEG C in stove, the biomass carbon of remaining high temperature again with the carbon dioxide in gas Occur fuel gas, these gases and second pyrolysis zones 14 such as reduction reaction generation carbon monoxide, hydrogen and methane with vapor Suctioned out after the volatile matter mixing of precipitation outside stove.According to embodiments of the present invention, the second zoneofoxidation 15 and second in the second gasification section Reaction in the no obvious subregion in reducing zone 16, twoth area intermeshes, while occurring with region.
In the first gasification section, carbon dioxide and vapor from the first zoneofoxidation 5 enter behind the first reducing zone 6, now, The oxygen in this region has exhausted, and with pyrolytic carbon reduction reaction occurs for carbon dioxide and vapor, generates substantial amounts of carbon monoxide And hydrogen, it is now the endothermic reaction, according to embodiments of the present invention, the temperature in this region burner hearth is 600~900 DEG C.
The gasification lime-ash of first gasification section is discharged by the first lime-ash outlet 8, and the lime-ash of the second gasification section is gone out by the second lime-ash Mouth 18 is discharged, and gasification qi leel is other after the first gasification gas exports 7 and the exclusion of the second gasification gas outlet 12, is merged into house steward's storage It is stored in gas holder.
Finally it should be noted that:Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and simultaneously The non-restriction to embodiment.For those of ordinary skill in the field, it can also do on the basis of the above description Go out other various forms of changes or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn Among the obvious changes or variations that Shen goes out is still in protection scope of the present invention.

Claims (10)

1. a kind of two-stage type biomass pyrolytic gasification revolving bed, the profile of the revolving bed in a ring, the shell of the revolving bed Include furnace roof, circumferential furnace wall and stone or metal plate for standing a stove on as a precaution against fire successively from top to bottom, the furnace roof is fixedly connected with the circumferential furnace wall, and the stone or metal plate for standing a stove on as a precaution against fire can Relatively described furnace roof is horizontally rotated with circumferential furnace wall;The furnace roof, circumferential furnace wall and stone or metal plate for standing a stove on as a precaution against fire surround the stove to form the revolving bed Thorax, wherein,
The burner hearth is circumferentially divided into two sections, is the first gasification section and the second gasification section, and first gasification section and second are gasified Duan Jun includes circumferential dry section, pyrolysis zone, zoneofoxidation and the reducing zone being sequentially connected, the reducing zone of first gasification section and institute The dry section for stating the second gasification section connects and is provided with the first dividing plate, the reducing zone of second gasification section and first gasification section Dry section connect and be provided with second partition;
The furnace roof is provided with the first air intlet, the second air intlet, the first gasification gas outlet, the second gasification gas outlet, the One charging aperture, second charging aperture, the outlet of the first lime-ash, the outlet of the second lime-ash,
First air intlet is connected with the dry section of first gasification section;Second air intlet and second gas The reducing zone for changing section is connected;
The first gasification gas outlet is connected with the reducing zone of first gasification section, and the second gasification gas is exported and described the The dry section of two gasification sections is connected;
The first charging aperture is connected with the dry section of first gasification section;The second charging aperture and second gasification section Dry section be connected;
The first lime-ash outlet is connected with the reducing zone of first gasification section;The second lime-ash outlet and second gas The reducing zone for changing section is connected.
2. revolving bed according to claim 1, it is characterised in that the periphery of the stone or metal plate for standing a stove on as a precaution against fire is described provided with a circle side shield The lower edge of side shield and the water sealed tank of the furnace wall are sealed using water seal, and the furnace roof is stretched on the upper edge of the side shield Neck.
3. revolving bed according to claim 1, it is characterised in that first air intlet and second air intlet It is connected by external pipe.
4. revolving bed according to claim 1, it is characterised in that the first gasification gas outlet and the described second gasification gas Outlet is connected by external pipe.
5. revolving bed according to claim 1, it is characterised in that the first lime-ash outlet and the outlet of the second lime-ash are outer Run in lime-ash equipment.
6. revolving bed according to claim 1, it is characterised in that the stone or metal plate for standing a stove on as a precaution against fire can relatively described furnace roof and circumferential furnace wall water It is flat to be rotated clockwise.
7. revolving bed according to claim 1, it is characterised in that first dividing plate and the second partition are ventilative Dividing plate.
8. a kind of carry out biomass pyrolytic using any one of claim 1 to the 7 two-stage type biomass pyrolytic gasification revolving bed The method of gasification, comprises the following steps:
Biomass material is added by first charging aperture and second charging aperture respectively, under the drive of the stone or metal plate for standing a stove on as a precaution against fire, described first The material of gasification section and the second gasification section is gradually moved to reducing zone by respective dry section;
The air of first gasification section is sent into by its dry section, will successively back through pyrolysis zone, zoneofoxidation and reducing zone Its gasification gas produced is suctioned out from the reducing zone of first gasification section;
The air of second gasification section is sent into by its reducing zone, be advanced past successively second gasification section zoneofoxidation, Pyrolysis zone and dry section, the gasification gas produced are suctioned out from the dry section of second gasification section.
9. method according to claim 8, it is characterised in that methods described also includes:
In first gasification section and the second gasification section, the raw material having just enter into is dried in first dry section and second and distinguished It is not dried;
The dried volatility of raw material is set to go out gas in the pyrolysis zone of the pyrolysis zone of first gasification section and the second gasification section Composition.
10. method according to claim 8, it is characterised in that methods described also includes step:In the described second gasification Section, makes the gas that reduction reaction is generated be discharged after being mixed with the volatilization gas that pyrolysis is produced by the described second gasification gas outlet.
CN201710240698.8A 2017-04-13 2017-04-13 A kind of two-stage type biomass pyrolytic gasification revolving bed and pyrolysis gasification method Pending CN106978215A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108587671A (en) * 2018-05-21 2018-09-28 华北电力大学 A kind of apparatus and method of biomass quick catalysis pyrolysis
CN109631579A (en) * 2018-11-30 2019-04-16 武汉科技大学 A kind of annular grate-firing furnace applied to powder material
CN114699992A (en) * 2022-02-17 2022-07-05 四川马边龙泰磷电有限责任公司 Calcium nitrate pyrolysis device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108587671A (en) * 2018-05-21 2018-09-28 华北电力大学 A kind of apparatus and method of biomass quick catalysis pyrolysis
CN108587671B (en) * 2018-05-21 2021-05-21 华北电力大学 Device and method for biomass rapid catalytic pyrolysis
CN109631579A (en) * 2018-11-30 2019-04-16 武汉科技大学 A kind of annular grate-firing furnace applied to powder material
CN114699992A (en) * 2022-02-17 2022-07-05 四川马边龙泰磷电有限责任公司 Calcium nitrate pyrolysis device
CN114699992B (en) * 2022-02-17 2023-01-06 四川马边龙泰磷电有限责任公司 Calcium nitrate pyrolysis device

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