CN110291178A - Gasification installation - Google Patents
Gasification installation Download PDFInfo
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- CN110291178A CN110291178A CN201880005084.4A CN201880005084A CN110291178A CN 110291178 A CN110291178 A CN 110291178A CN 201880005084 A CN201880005084 A CN 201880005084A CN 110291178 A CN110291178 A CN 110291178A
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- China
- Prior art keywords
- gasification furnace
- gasification
- canister portion
- charcoal
- raw material
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
- C10J3/32—Devices for distributing fuel evenly over the bed or for stirring up the fuel bed
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
- C10J3/34—Grates; Mechanical ash-removing devices
- C10J3/36—Fixed grates
- C10J3/38—Fixed grates with stirring beams
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Gasification installation carries out heat resolve to the biomass as raw material, so that the heat resolve generated in the heat resolve is generated substance and carries out part burning, and is restored using remaining carbide after the heat resolve and part burning.The gasification installation has container-like canister portion (14), raw material feed device (raw material supply unit) (3), first discharge port (19) and the second outlet (43).Canister portion (14) is arranged in the inside of gasification furnace (2) with following state, i.e., its bottom wall is configured at the bottom wall of the gasification furnace (2), and the lateral top of the bottom wall of side wall from the gasification furnace (2) extends, and upper surface is opened wide.Raw material feed device (3) launches biomass towards the inside of canister portion (14).Carbide can be discharged from the inside of canister portion (14) towards outside for first discharge port (19).Carbide can be discharged from the outside of the canister portion (14) of the inside of gasification furnace (2) towards the external of gasification furnace (2) for second outlet (43).
Description
Technical field
The present invention relates to gasification installation, which has the gasification furnace for raw material being heat-treated and being generated gas.
Background technique
In the past, it is known that the gasification installation to gasify to raw material (typically biomass).Such as it is recorded in patent document 1
This gasification installation.
The structure of the referred to as gasification installation of fluidized bed-type is disclosed in patent document 1, still, as the side being different from
Formula, it is known that the simple structure of furnace and have been generally acknowledged that the less fixed bed downdraft gasification device of tar generated.
In fixed bed downdraft gasification device, be thrown to the biomass as raw material of gasification furnace according to heat resolve,
Oxidation, the sequence restored react, and generate gas in this process.The carbide (charcoal) generated during these reactions
It is piled up in the lower part of gasification furnace, still, if the charcoal accumulated is from discharger to outside gasification furnace by the time to a certain degree
Portion's discharge.
For gasification installation as described above, the following problem of discovered in recent years, that is, if charcoal is stagnant in the lower part of gasification furnace
The overlong time stayed, it is likely that generate unwanted substance.Conversely, as charcoal also contributes to the generation of gas, so, if
Charcoal is too short in the time that the lower part of gasification furnace is detained, then gasification efficiency is likely to decrease.Therefore, it is intended that by charcoal under gasification furnace
The time that portion is detained is adjusted to length appropriate, accordingly, it is believed to be desirable at least make the accumulating amount of the charcoal in gasification furnace not superfluous.
In order to keep the accumulating amount of the charcoal in gasification furnace not superfluous, such as recording in patent document 2, consideration is being gasified
Liquid level sensor is set at the desired height and position of furnace and monitors the testing result of liquid level sensor, meanwhile, adjust biomass
Injected volume or adjust the charcoal based on discharger discharge rate.But type of the accumulating amount of charcoal by biomass, shape
The influence of the various factors such as the temperature in state and gasification furnace and change, therefore, control becomes complicated, to there be improvement
Leeway.
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2007-163132 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2016-121252 bulletin
Summary of the invention
The present invention is completed in view of above situation, it is intended that keeping the accumulating amount of the charcoal in gasification furnace not superfluous.
Project to be solved by this invention is as above, next, to for solving the project method and its effect say
It is bright.
Viewpoint according to the present invention provides the gasification installation with flowering structure.That is, the gasification installation has gasification furnace, container
Canister portion, raw material supply unit, first discharge port and the second outlet of shape.The gasification furnace heats raw material and is produced
Angry body, the carbide that should be generated in the process are piled up in the gasification furnace.Cartridge is in the inside of the gasification furnace with such as
Lower state and be arranged, that is, its bottom wall is configured at the bottom wall of the gasification furnace, and side wall is from the bottom wall side of the gasification furnace to top
Extend, upper surface is opened wide.Inside throwing raw materials of the raw material supply unit towards cartridge.The first discharge port can
The carbide is discharged from the inside of cartridge towards outside.Second outlet can be by the carbide from described
External discharge of the outside of the cartridge of the inside of gasification furnace towards the gasification furnace.
Gasification furnace is being thrown to using biomass as raw material and gas is generated by heat resolve, oxidation, reduction as a result,
When, since biomass being launched towards the inside of canister portion, so, in principle, carbide is piled up in the inside of canister portion, via first
Outlet and the carbide is discharged to the external of gasification furnace.But if the accumulating amount of the carbide in canister portion increases to certain
Kind degree, then carbide spills into the outside of canister portion on the inside of canister portion, and from the second outlet to the external discharge of gasification furnace.
Even if critically the discharge rate of the carbide to the injected volume of biomass, from outlet does not control as a result, can also press down
The accumulating amount of carbide processed is excessive.It is generated not as a result, it is possible to inhibit the residence time of carbide too long in simple structure
The substance needed.
For the gasification installation, it is preferable that have the stirring of multi-prism taper in the bottom of the inside of cartridge
Component, the mixing component can by its vertex upward in a manner of rotate.
In the structure, the mixing component of multi-prism taper rotates and generates the flowing of following carbide in the inside of canister portion, that is,
Carbide, from central part towards outside, rises, towards center near upper surface near bottom then along the inner wall of canister portion
Decline after portion.The inside that the time of carbide to a certain degree is stranded in canister portion is promoted by the circulation of the up and down direction,
Therefore, the residence time for being able to suppress carbide is too short and is adequately gasified to carbide.
For the gasification installation, it is preferable that be provided in second outlet for keeping the gasification furnace
Inside air-tightness airtight member.
Thereby, it is possible to prevent air from the inside of the second outlet intrusion gasification furnace, so as to prevent the carbonization of accumulation
Object is directly exposed to burn at high temperature in air.
Detailed description of the invention
Fig. 1 is the integrally-built schematic diagram for showing gasification installation involved in one embodiment of the present invention.
Fig. 2 is the gasification furnace having to gasification installation and the schematic side view that relative structure is illustrated.
Fig. 3 is that the top view cross section being illustrated to the structure around the inside of gasification furnace, particularly the region of carbon build-up shows
It is intended to.
Specific embodiment
Next, embodiments of the present invention will be described referring to attached drawing.Fig. 1 is to show an embodiment party of the invention
The integrally-built schematic diagram of gasification installation 1 involved in formula.Fig. 2 be the gasification furnace 2 having to gasification installation 1 and and its
The schematic side view that relevant structure is illustrated.
Firstly, referring to Fig.1, being illustrated to the overall structure of gasification installation 1 involved in present embodiment.
The gasification installation 1 of present embodiment is following so-called biomass fermentation electric equipment: the agriculture residues such as rice husk,
The Organic resource that wooden system's waste material etc. is originated from biology (is strictly the Organic resource other than fossil fuel.Below
Sometimes referred to as " biomass ".) generate gas as fuel (raw material, gasification object) and generated electricity using the gas.Such as
Shown in Fig. 1, the gasification installation 1 of present embodiment has gasification furnace 2, raw material feed device (raw material supply unit) 3, charcoal discharger
4, bag filter 5, gas cooling device 6, cleaning device 7, guidance air blower 8, control device 9, cogeneration system 10, with
And residual gas burner 11 etc..
Gasification furnace 2 shown in Fig. 2 is the furnace for carrying out the key reaction of gasification of biomass.Gasification furnace in present embodiment
2 be so-called fixed-bed type furnace.As shown in Fig. 2, the up and down direction middle part in gasification furnace 2 is provided with for gasification furnace 2
Inside supply is as the air of oxidant or the oxidant supply mouth 13 of oxygen.
As illustrated schematically in fig. 2, heat resolve and the oxidation (part of progress biomass are formed in the inside of gasification furnace 2
Burning) region.In addition, being formed with confession in the position of the inside of gasification furnace 2, more partially combusted than progress region more on the lower
The carbon build-up region of heat resolve and part remaining charcoal (carbide) accumulation after burning.Oxidant supply mouth 13 is with by the gasification
The mode of the inside and outside connection of furnace 2 be in be set to poroidly on the high direction of furnace of gasification furnace 2 with carry out above-mentioned part combustion
The corresponding position in the region of burning.
Raw material feed device 3 is the device that biomass is internally supplied from the upper end of gasification furnace 2.In present embodiment
Raw material feed device 3 has hopper, screw rod 32 and motor 33 (not shown) etc..The hopper is the container for launching biomass.
Screw rod 32 is installed on the bottom of the hopper in a manner of it can rotate.Motor 33 drives screw rod 32 and makes its rotation.This
In embodiment, for example, by converter (inverter) control so that the rotation speed of the motor 33 is changed, thus to
The feed speed of prestige supplies biomass to gasification furnace 2.By the biomass from raw material feed device 3 towards it is in gasification furnace 2,
It launches the inside of canister portion 14 with first discharge port 19.Hereinafter, the structure of canister portion 14 is described in detail.
(discharge) is discharged from the bottom of gasification furnace 2 towards the external of gasification furnace 2 in charcoal by charcoal discharger 4.Strictly, charcoal
Charcoal is discharged discharger 4 from the external of gasification furnace 2 that be partially toward in the bottom of gasification furnace 2, canister portion 14 outside.It is specific and
Speech, the outside drain of charcoal discharger 4 in present embodiment by charcoal from the bottom wall of gasification furnace 2 towards the gasification furnace 2.This implementation
Charcoal discharger 4 in mode is configured to have: the second outlet 43, and charcoal can be discharged towards the external of gasification furnace 2；Rotation
Rotary valve (airtight member) 41 is set to the downstream side of above-mentioned second outlet 43；And screw conveyor 42.
Second outlet 43 is the hole for the bottom being set in gasification furnace 2.Strictly, the second outlet 43 is set to gas
Bottom wall changing the bottom of furnace 2, being configured in the outside of canister portion 14.Second outlet 43 is by the inside and outside connection of gasification furnace 2.
The access for will guide from the charcoal of carbon build-up area alignment to screw conveyor 42 is connected in second outlet 43.
Rotary valve 41 is the component for gasification furnace 2 to be remained to airtight conditions.It is used in addition, rotary valve 41 has to be used as
The function for the check-valves for preventing the charcoal discharged from gasification furnace 2 from flowing backwards into the gasification furnace 2.Rotary valve 41 rotate and will be from second row
The screw conveyor 42 of the charcoal of 43 discharge of outlet downwards supplies.Rotation speed by changing screw conveyor 42 will discharge
Charcoal with desired speed to the defined place of the outside of gasification furnace 2 convey.
The region more closer to the top than carbon build-up region in gasification furnace 2, to the biomass supplied from raw material feed device 3
(raw material, gasification object) implements drying.Then, dry biomass is at a temperature of 200 DEG C~600 DEG C or so with anaerobic shape
State is heated decomposition.About 50%~90% biomass is converted into gas (CO, H as a result,2、CH4、CO2、H2) and tar etc. O
Gas shape substance, remaining about 10%~50% is converted into the fixed carbon for being referred to as charcoal.It should be noted that conversion ratio by
The influence of type, the partial size of heating speed, biomass in furnace etc. and change.Heat resolve and the heat resolve product generated
Matter is oxidized because of the air or oxygen supplied from oxidant supply mouth 13 and (burns part).Made by the heat that part burning generates
It is used for the heat source in above-mentioned heat resolve.Remaining carbon build-up is in than carrying out partially combusted area after part is burnt
The carbon build-up region of domain more on the lower.
Carbon build-up region in gasification furnace 2, the temperature (such as 700 DEG C~1000 DEG C) when being generally lower than part and burning
It is lower to carry out reduction reaction (adsorption reaction) using charcoal, so that charcoal is in dry-fire condition and gasifies.In the carbon build-up area
Domain generates CO and H using following reaction in the gasification (reduction) of charcoal, is substantially carried out2。
C+CO2→2CO
C+H2O→H2+CO
As shown in Figure 1, the gas generated in gasification furnace 2 thermoelectric alliance system and the gas path being made of piping etc.
System 10 and residual gas burner 11 supply.In gasification furnace 2 and cogeneration system 10 (the residual gas combustion of the gas path
Burn device 11) between middle part, from the upstream side toward the downstream side, in the following order be configured with bag filter 5, gas cooling
Device 6, cleaning device 7 and guidance air blower 8.
Bag filter 5 is the removings such as particle, the dusts of carbon such as the coal that will contain from the gas that the flowing of gasification furnace 2 comes
Device.Pass through gas from the filter of bag filter 5 using such as the methods of centrifuge separation bag filter 5,
Capture coal and dust using the filter etc..
Gas cooling device 6 be to from bag filter 5 by flow later come gas cool down and improve the gas
The device of the density of body.Gas cooling device 6 cools down gas using such as the methods of heat exchange.Specifically, gas
Cooling device 6 for example has: heat exchanger is supplied to cooling water；And gas path, be configured at above-mentioned heat exchanger it
Between.Using the water from water storage tank as cooling water, heat exchanger is supplied, and heat exchange is carried out between cooling water and gas.
Cleaning device 7 is cleaned and removes tar removing etc. to flowing the gas come after cooling by gas cooling device 6
Device.Cleaning device 7 removes tar removing by executing for example following physical technology, which includes: so that gas shape
Tar condensation process；The process that gas-liquid mixture is separated；And the process for carrying out drop filtering.
Guidance air blower 8 is 10 side of the gas thermoelectric co-feeding system guidance by generating autopneumatolysis in negative pressure future furnace 2
Device.Guidance air blower 8 by for example guide the wind pushing mechanism of ventilated type at.By guiding the effect of air blower 8 than drawing
It leads and generates negative pressure in the gas path and gasification furnace 2 of 8 upstream side of air blower.
Cogeneration system 10 is made of gas engine and generator etc..The gas generated in gasification furnace 2 is being removed
It removes coal, tar etc. and improves the backward gas engine supply of density, thus using gas engine by the thermal energy of the gas
It is converted into rotary motion.The rotary motion is transmitted to generator and is generated electricity.In addition, a part in the thermal energy of gas is for supplying
To hot water etc..
From guidance air blower 8 pass through after gas in, residual gas that non-thermoelectric co-feeding system 10 supplies is to surplus
Remaining gas combustion apparatus 11 supplies.Residual gas burner 11 carries out burning disposal to remaining gas, and carbon monoxide is turned
It turns to carbon dioxide and realizes innoxious.
Control device 9 is to gasification furnace 2, raw material feed device 3, charcoal discharger 4, bag filter 5, gas cooling dress
Set the meter that 6, cleaning device 7, guidance air blower 8, cogeneration system 10 and residual gas burner 11 etc. are controlled
Calculation machine.Control device 9 is configured to the computer for having CPU, ROM, RAM etc., and CPU can read from ROM and execute various programs
Deng.In addition, being stored with the program appropriate of the gasification for making gasification installation 1 suitably carry out biomass in the ROM.And
And by the cooperation of above-mentioned software and hardware, gasification installation 1 can be made suitably to carry out the gasification of biomass, and be able to carry out
The removing of coal, tar, the concentration of gas in gas and towards cogeneration system 10 and residual gas burner 11
Gas supply etc..
Storage unit 12 is depositing of being stored of numerical value, parameter etc. used in the various controls carried out to control device 9
Reservoir.
In the gasification installation 1 of structure as described above, biomass is generated into gas as fuel and in gasification furnace 2,
The coal contained in the gas, tar are removed and realize and be concentrated by the midway of gas path, then by the gas thermoelectric alliance system
10 supply of system.Electric power can be obtained using the thermal energy of the gas.That is, will be electric power using biomass as the energy conversion of resource and
It takes out.Thereby, it is possible to effectively utilize the biomass as renewable energy.
But the following problem of discovered in recent years: if charcoal can be generated and be not required in the overlong time of carbon build-up area stay
The substance wanted., whereas if charcoal is too short in the time of carbon build-up area stay, then (reduction) is not gasified adequately using charcoal
And it is likely to result in gasification efficiency reduction.Therefore, it is intended that making carbon build-up area stay reasonable time of the charcoal in gasification furnace 2
It discharges it later, accordingly, it is believed to be desirable at least make the accumulating amount of the charcoal in the carbon build-up region in gasification furnace 2 not superfluous.
Therefore, in the gasification installation 1 of present embodiment, superfluous as the accumulating amount for preventing the charcoal in carbon build-up region
Structure, as shown in Fig. 2, having canister portion 14, first discharge port 19 and second outlet 43 etc..In addition, as sufficiently really
Charcoal is protected in a part of the structure of the residence time in carbon build-up region, has mixing component 15 etc..
Hereinafter, to the gasification installation 1 of present embodiment in order to adjust the charcoal in carbon build-up region accumulating amount and charcoal it is stagnant
The characteristic structure staying the time and having is described in detail.
Canister portion 14 is lower end closed and upper end is substantially open and is configured to container-like cylinder-like part.That is, canister portion 14 is in
Bottomed cylindrical.The wall (bottom wall) of the lower end of canister portion 14 is disk-shaped, and is configured at the bottom wall of the bottom of gasification furnace 2.
The side wall (cylindric side wall) of canister portion 14 extends upward from the peripheral part (bottom surface side of gasification furnace 2) of its bottom wall.Canister portion
14 upper surface is configured so that its opening towards 3 side of raw material feed device.Canister portion 14 is arranged with following state, that is, its side
The furnace wall 2a of gasification furnace 2 is fixed at many places position of the upper limb of wall by lifting part 21 respectively, thus relative to gasification furnace 2
(bottom wall) bottom surface slightly float upwards.
The first discharge port 19 that charcoal can be discharged from the inside of canister portion 14 towards outside is provided in the bottom of canister portion 14.
In present embodiment, the lower end of the side wall of canister portion 14 is provided with first discharge port 19.First discharge port 19 is with by canister portion 14
The mode that is connected to the space in outside of the space of inside be formed as poroid.But, the opening area and cylinder of first discharge port 19
The opening area of the open section of the upside in portion 14 is compared and fairly small.
Mixing component 15 is configured near its lower end surface in the inside of canister portion 14.As shown in Figures 2 and 3, this embodiment party
Mixing component 15 in formula is formed as multi-prism taper and has a plurality of crest line.In present embodiment, mixing component 15 is formed as four
Pyramid-shaped and have 4 crest lines.As long as mixing component 15 is essentially formed as multi-prism taper.The shape of mixing component 15
It can be for such as the area polygonal pyramid mesa-shaped fairly small compared with the area of bottom surface of upper surface.Fig. 3 is in gasification furnace 2
The top cross-sectional view that structure around portion, particularly the region of carbon build-up is illustrated.
Mixing component 15 in present embodiment is configured in the bottom of canister portion 14 with the state of its vertex upward
Centre portion.As shown in Fig. 2, mixing component 15 is fixed on the upper end of shaft member 16.
Shaft member 16 be the central portion of the bottom wall by the central portion of the lower end surface of canister portion 14 and gasification furnace 2 it is perforative compared with
Long shaft like parts.Shaft member 16 is set to the bottom of canister portion 14 and the bottom wall of gasification furnace 2 in a manner of it can rotate.Shaft member
The driving sources such as 16 not shown motors drive and rotate.
Inside stirring blade 17 is the axis relative to shaft member 16 and is arranged to radial blade.Inside stirring blade
17 are configured at the inside of canister portion 14.As shown in Fig. 2, the inside stirring blade 17 in present embodiment is consolidated by mixing component 15
Due to the upper end of shaft member 16.Inside stirring blade 17 is rotated with the rotation of shaft member 16, thus right in canister portion 14
The charcoal for being piled up in the inside of canister portion 14 is stirred.It is piled up in the charcoal of the inside of canister portion 14 as a result, to be drawn without uneven state
It is directed at first discharge port 19 and is discharged to the outside of the canister portion 14.
Outside stirring blade 18 is the axis relative to shaft member 16 and is arranged to radial blade.Outside stirring blade
18 are configured at the outside of canister portion 14.Outside stirring blade 18 in present embodiment is configured at lower end surface and the gasification furnace of canister portion 14
Space between 2 bottom wall.Outside stirring blade 18 is fixed on the up and down direction middle part of shaft member 16.Outside stirring blade 18
Rotated with the rotation of shaft member 16, thus the inside of the furnace wall 2a of gasification furnace 2 to reach canister portion 14 outside charcoal into
Row stirring.The charcoal in the outside of canister portion 14 is reached as a result, to be directed to the second outlet 43 without uneven state and to rotary valve
41 supplies.It supplies to the charcoal of rotary valve 41 and is supplied by the rotation of the rotary valve 41 to 42 side of screw conveyor.
According to this structure, in gasification installation 1, by as the biomass of raw material from raw material feed device 3 towards cylinder
The inside in portion 14 supplies.The biomass launched as a result, and the charcoal principle generated due to the biomass heat resolve, part are burnt
On be piled up in the inside of canister portion 14.The most of charcoal for lodging in the inside of canister portion 14 flows as follows, that is, because of multi-prism taper
Mixing component 15 rotation and in axis of the bottom wall of canister portion 14 far from mixing component 15, then, along canister portion 14
Inner wall rises, and declines after to the axis (referring to the thin-line arrow of Fig. 2) near the upper surface in carbon build-up region.At this
In the cyclic process of up and down direction, at least part of charcoal reaches the outside of canister portion 14 via first discharge port 19, then, warp
It is discharged from the second outlet 43 to the external of gasification furnace 2.
In addition, the amount for the charcoal accumulated in the inside of canister portion 14 is superfluous and the feelings that can not further be accumulated in the inside of canister portion 14
Under condition (specifically, such as charcoal be more than angle of repose degree angle be piled into it is coniform in the case where), in remaining charcoal
It carries out after acting as follows crossing the upper limb of the side wall of canister portion 14 (referring to the thin-line arrow of Fig. 2) and reaching the outer of the canister portion 14
Side, the movement are as follows: its at least part is sunk downwards in the carbon build-up region of the inside of canister portion 14, and side floats then up.
In other words, a part of charcoal is overflowed in the rear of inside circulation of canister portion 14 to the outside of the canister portion 14.It should be noted that due to rotation
Valve 41 and screw conveyor 42 are acted with enough speed, so, when no matter being discharged from first discharge port 19 or from cylinder
When portion 14 is overflowed, charcoal can be promptly discharged from the second outlet 43 towards the external of gasification furnace 2.
That is, the charcoal of excess electron excess fraction virtually all overflows from the inside of canister portion 14 in the case where the accumulating amount of charcoal is superfluous
Out and and fall to the outside of canister portion 14, and the external discharge from the second outlet 43 to gasification furnace 2 in a short time.As a result,
Even if the not critically rotation to the movement speed, charcoal discharger 4 of the screw rod 32 of such as raw material feed device 3 as previous
Valve 41 and the movement speed of screw conveyor 42 etc. are controlled, and are also able to suppress charcoal in the accumulating amount mistake in carbon build-up region
It is surplus.
In addition, charcoal is flowed because of the rotation of mixing component 15, it is stranded in promote charcoal with the time to a certain degree
The inside of canister portion 14.In other words, charcoal is able to suppress not in carbon build-up area stay time enough just to the external row of gasification furnace 2
Out.As a result, it is possible to the gasification (reduction) using charcoal is carried out with time enough.
In this way, in the gasification installation 1 of present embodiment, without carrying out the essence of the supply amount of biomass and the discharge amount of charcoal etc.
Close control, can be to a certain degree to control the residence time of charcoal by mechanical realization.Thereby, it is possible to simplify gasification dress
Set the structure of 1 control system.
As described above, the gasification installation 1 of present embodiment carries out heat resolve to biomass, and makes because of the heat resolve
And generate heat resolve generate material part burning, and using the heat resolve and the part burning after remaining charcoal into
Row reduction.The gasification installation 1 have container-like canister portion 14, raw material feed device (raw material supply unit) 3, first discharge port 19,
And second outlet 43.Canister portion 14 is arranged in the inside of gasification furnace 2 with following state, that is, its bottom wall is configured at the gasification
The bottom wall of furnace 2, side wall extend from the bottom wall side of the gasification furnace 2 to top, and upper surface is opened wide.Raw material feed device 3
Biomass is launched towards the inside of canister portion 14.Charcoal can be discharged from the inside of canister portion 14 towards outside for first discharge port 19.The
Charcoal can be discharged from the outside of the canister portion 14 of the inside of gasification furnace 2 towards the external of gasification furnace 2 for two outlets 43.
Due to by biomass towards canister portion 14 inside launch, so, in principle, carbon build-up in the inside of canister portion 14, and
Via first discharge port 19 to the external discharge of gasification furnace 2.But if the accumulating amount of the charcoal in canister portion 14 increases to certain
Degree, then the charcoal in canister portion 14 overflows from the upper limb of canister portion 14 and reaches the outside of canister portion 14 and from the second outlet 43 to gasification
The external discharge of furnace 2.Even if critically the discharge rate of the charcoal to the injected volume of biomass, from outlet 43 does not carry out as a result,
Control, the accumulating amount for being also able to suppress charcoal are superfluous.It is given birth to as a result, it is possible to inhibit the residence time of charcoal too long in simple structure
At unwanted substance.
In addition, having the mixing part of multi-prism taper in the bottom of the inside of canister portion 14 in the gasification installation 1 of present embodiment
Part 15, the mixing component 15 can by its vertex upward in a manner of rotate.
In the structure, the mixing component 15 of multi-prism taper is rotated and generates the stream of following charcoal in the inside of canister portion 14
It is dynamic, that is, charcoal, from central part towards outside, rises, the direction near upper surface near bottom then along the inner wall of canister portion 14
Decline after central part.By the circulation of the up and down direction, the charcoal entered in canister portion 14 can be prevented fast from first discharge port 19
It is discharged fastly, promotes the inside that charcoal is stranded in canister portion 14 with the time to a certain degree.Therefore, it is able to suppress the residence time of charcoal
It is too short, it can adequately be gasified (reduction) using charcoal.Thereby, it is possible to realize the raising of gasification efficiency.
In addition, being provided in the second outlet 43 for keeping in gasification furnace 2 in the gasification installation 1 of present embodiment
The rotary valve (airtight member) 41 of the air-tightness in portion.
Thereby, it is possible to prevent air from the inside of the second outlet 43 intrusion gasification furnace 2, so as to prevent the charcoal of accumulation
It is directly exposed to burn at high temperature in air.
More than, the preferred embodiment of the present invention is illustrated, but, such as above structure can be carried out as follows
Change.
In above embodiment, mixing component 15 is set as tetrapyamid shape, and but, the shape of pyramid is not limited to tetragonous
Cone, such as can be triangular pyramid, or it is more than pentagonal pyramid.
In above embodiment, airtight member is set as rotary valve 41, but, is not necessarily limited to this, for example, can take
And instead of be set as double dampers etc..That is, as long as airtight member is to maintain the air-tightness in gasification furnace 2 and will be in the gasification furnace 2
The component that gives off of charcoal, or other structures.
In above embodiment, first discharge port 19 is set to the lower end of the side wall of canister portion 14, but, might not office
It is limited to this, for example, first discharge port instead can be formed to penetrate through shape in the lower end surface of canister portion 14.It can also be in canister portion
The 14 multiple first discharge ports 19 of setting.
In above embodiment, first discharge port 19 is formed as being connected to the space in outside in the space of the inside of canister portion 14
It is poroid, it is however also possible to be set as the structure that first discharge port 19 can be opened and closed.In this case, such as from gasification
It can make first discharge port 19 until the inside of canister portion 14 until the desired amount of carbon build-up from whens device 1 waits after just starting
The state for being formed as closing can make first discharge port 19 be formed as open shape after carbon build-up amount reaches aequum
Thus state starts the common control being increased and decreased to carbon build-up amount.
In above embodiment, the second outlet 43 but, is not limited to penetrating through the bottom wall that shape is set to gasification furnace 2
In this, for example, the second discharge unit can instead be made to be formed as the lower end of the furnace wall 2a of gasification furnace 2 in the horizontal direction
Portion is run through.That is, the second outlet 43 is set to the bottom of gasification furnace 2, it can be formed in bottom wall, furnace wall can also be formed in
The lower end of 2a.Multiple second outlets 43 can also be set in gasification furnace 2.
In above embodiment, canister portion 14 is the component of bottomed cylindrical, and but, the shape of canister portion 14 is not limited to
This.Canister portion 14 can for more rib tubulars such as with the end.
In above embodiment, the gas thermoelectric co-feeding system 10 generated in gasification furnace 2 is supplied, but, not office
It is limited to this, for example, can be instead to gas turbine supply gas.
In above embodiment, drying is implemented to biomass in gasification furnace 2 and is but not necessarily limited to this, example
Such as, drying instead can be implemented to biomass in advance before supplying to raw material feed device 3.
In above embodiment, carried out using accumulating amount of the mechanical realization for having canister portion 14 and mixing component 15 etc. to charcoal
Control.But is not limited thereto, the control of the accumulating amount of charcoal in addition to it is above-mentioned controlled using mechanical realization other than, also
It can be and being adjusted the electrical control of supply amount of biomass, the electrical control for the discharge amount for adjusting charcoal together synthetically
It realizes.
The present invention can be widely applied to the gasification installation 1 for having following gasification furnace 2, in the gasification furnace 2, than carrying out
The position of partially combusted region more on the lower is for carbon build-up and the temperature when the region of the carbon build-up lower than part to burn
Carry out the reduction using the charcoal.That is, the form of gasification furnace 2 is not necessarily limited to fixed-bed type.
Description of symbols
1 gasification installation
3 raw material feed devices (raw material supply unit)
14 canister portions
15 mixing components
19 first discharge ports
41 rotary valves (airtight member)
43 second outlets
Claims (3)
1. a kind of gasification installation, which is characterized in that have:
Gasification furnace, the gasification furnace are heat-treated raw material and generate gas, and the carbide generated in this process is piled up in this
In gasification furnace；
Container-like canister portion, the canister portion are arranged in the inside of the gasification furnace with following state, that is, its bottom wall is configured at the gas
Change the bottom wall of furnace, side wall extends from the bottom wall side of the gasification furnace to top, and upper surface is opened wide；
Raw material supply unit, inside throwing raw materials of the raw material supply unit towards cartridge；
The carbide can be discharged from the inside of cartridge towards outside for first discharge port, the first discharge port；And
Second outlet, second outlet can be by the carbide from the outside of the cartridge of the inside of the gasification furnace
Towards the external discharge of the gasification furnace.
2. gasification installation according to claim 1, which is characterized in that
Has the mixing component of multi-prism taper in the bottom of the inside of cartridge, which can be with its vertex towards upper
The mode of side rotates.
3. gasification installation according to claim 1 or 2, which is characterized in that
Second outlet is provided with the airtight member for the air-tightness for keeping the inside of the gasification furnace.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-031333 | 2017-02-22 | ||
| JP2017031333A JP6640771B2 (en) | 2017-02-22 | 2017-02-22 | Gasifier |
| PCT/JP2018/005816 WO2018155391A1 (en) | 2017-02-22 | 2018-02-19 | Gasification device |
Publications (2)
| Publication Number | Publication Date |
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| CN110291178A true CN110291178A (en) | 2019-09-27 |
| CN110291178B CN110291178B (en) | 2022-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201880005084.4A Active CN110291178B (en) | 2017-02-22 | 2018-02-19 | Gasification device |
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| Country | Link |
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| JP (1) | JP6640771B2 (en) |
| CN (1) | CN110291178B (en) |
| WO (1) | WO2018155391A1 (en) |
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| WO2024122503A1 (en) * | 2022-12-06 | 2024-06-13 | 株式会社ネオナイト | Biomass gasification method, biomass gasification system, and biomass power generation system |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6640771B2 (en) | 2020-02-05 |
| WO2018155391A1 (en) | 2018-08-30 |
| CN110291178B (en) | 2022-03-29 |
| JP2018135463A (en) | 2018-08-30 |
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