CN106123010A - A kind of combustion method of biomass fuel - Google Patents
A kind of combustion method of biomass fuel Download PDFInfo
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- CN106123010A CN106123010A CN201610783543.4A CN201610783543A CN106123010A CN 106123010 A CN106123010 A CN 106123010A CN 201610783543 A CN201610783543 A CN 201610783543A CN 106123010 A CN106123010 A CN 106123010A
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- primary combustion
- biomass fuel
- combustion zone
- temperature
- combustion
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L7/00—Supplying non-combustible liquids or gases, other than air, to the fire, e.g. oxygen, steam
- F23L7/002—Supplying water
- F23L7/005—Evaporated water; Steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/22—Methods of steam generation characterised by form of heating method using combustion under pressure substantially exceeding atmospheric pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
Abstract
The invention discloses the combustion method of a kind of biomass fuel, comprise the following steps: biomass fuel is positioned over primary combustion zone, under a wind action, carry out primary combustion for producing water vapour, monitor the temperature of described primary combustion zone simultaneously；When the temperature of described primary combustion zone is higher than predetermined threshold value, it is delivered in described primary combustion zone after described water vapour and outside air are mixed, so that the temperature of described primary combustion zone is less than this predetermined threshold value.The present invention can overcome the deficiency that traditional combustion process method exists, and starts brand-new future to the utilization of the biomass solid formed fuel energy, and the market space is huge.
Description
Technical field
The application relates to the combustion method of a kind of fuel, particularly relates to the combustion method of a kind of biomass fuel.
Background technology
Biomass energy is the energy contained in biomass, is that green plants converts solar energy into chemistry by chlorophyll
Can and be stored in the energy within biomass.The fossil energy such as coal, oil and natural gas is also changed by biomass energy.
Biomass energy is regenerative resource, generally includes the following aspects: one is timber and forest industry garbage；Two is that agricultural is useless
Gurry；Three is water plant；Four is oilseed plant；Five is city and industrial organic wastes；Six is animal wastes.Biomass energy
The important energy source that always mankind depend on for existence, it be only second to coal, oil and natural gas and to occupy world energy sources consumption total
The energy that flow control is four, occupies critical role in whole energy resource system.Relevant expert estimates, biomass energy very likely becomes
The ingredient of following sustainable energy system, to mid-21st Century, the various biomass substitute fuels produced of employing new technology
More than the 40% of whole world total energy consumption will be accounted for.
In world's energy consumption, biomass energy accounts for 14%, accounts for more than 60% in under-developed area.The whole world about 2,500,000,000 people's
The 90% of domestic energy is above biomass energy.The advantage of biomass energy is that burning is easy, pollutes few, and ash is relatively low；Shortcoming is
Calorific value and the thermal efficiency are low, and volume is big and is difficult to transport.Directly the thermal efficiency of biomass burning is only 10%-30%.The world at present
Various countries the most progressively adopt and utilize biomass energy with the following method:
1, thermochemical conversion method, it is thus achieved that the energy products of high grade such as Linesless charcoal, tar and fuel gas, the method is again by it
Hot worked method is different, is divided into the methods such as high-temperature retorting, pyrolysis, biomass liquefying；
2, biochemical transformations method, refers mainly to biomass under the Fermentation of microorganism, forms methane, ethanol equal energy source
Product；
3, bio oil produced by oilseed plant is utilized；
4, biomass compression molding fuel (such as block-type, rod-type fuel element), in order to focus utilization and the raising thermal efficiency.
But, all air of fan inlet of traditional combustion machine, the chemical reaction that the fuel bed on fire grate occurs is such as
Under:
C+O2=CO2
2C+O2=2CO
Traditional combustion machine temperature exceedes the fusing point of alkali metal oxide, causes alkali metal oxide to melt, and forms molten
Thickness vitreous body, be called for short coking (composition of biomass fuel includes charcoal, organic volatile matter, water, metal-oxide；Wherein charcoal
The most oxidized with organic volatile matter, produce carbon dioxide and water, and discharge heat energy, remaining metal-oxide
It is ash).Traditional combustion process method exists following not enough:
1, fuel tolerance is poor: only adapt to ash low, and the Wooden Biomass fuel that ash fusion point is high；
2, fire grate coking is easily deformed and burns, and the easy coking of burner hearth makes it easily burn, due to the existence of coking, and one
Secondary wind is seriously obstructed and runner skewness, adversely affecting its combustion effect.
Summary of the invention
It is an object of the invention to be to overcome above-mentioned biomass combustion process not enough, it is provided that a kind of biomass fuel
Combustion method.
The present invention can overcome the deficiency that traditional combustion process method exists, to the biomass solid formed fuel energy
Utilizing and start brand-new future, the market space is huge.
The technical scheme is that and be achieved in that:
The combustion method of a kind of biomass fuel, it is characterised in that comprise the following steps:
Biomass fuel is positioned over primary combustion zone, under a wind action, carries out primary combustion steam for producing water
Vapour, monitors the temperature of described primary combustion zone simultaneously；
When the temperature of described primary combustion zone is higher than predetermined threshold value, carry after described water vapour and outside air are mixed
To described primary combustion zone, so that the temperature of described primary combustion zone is less than this predetermined threshold value.
Further, described predetermined threshold value is 900 DEG C.
Further, the ratio of described water vapour and described outside air is 1:2 to 1:10, it is preferable that described water vapour and
The ratio of described outside air is 1:6.
Further, at biomass fuel during primary combustion zone carries out primary combustion, when the temperature of primary combustion zone
When degree is less than predetermined threshold value, by the containing of water vapour in increasing the content of air in primary combustion zone and reducing primary combustion zone
Amount so that the temperature of described primary combustion zone returns to predetermined threshold value；When the temperature of primary combustion zone is higher than predetermined threshold value, pass through
Reduce the content of air and the content of water vapour in increase primary combustion zone in primary combustion zone so that described primary combustion zone
Temperature returns to predetermined threshold value.
Further, the reaction of described primary combustion zone is as follows:
2C+O2=2CO
C+H2O=CO+H2。
Further, carry out primary combustion at biomass fuel in primary combustion zone and produce biological fuel gas CO and H2After, will
Produced biological fuel gas CO and H2It is delivered to intermediate zone, under secondary wind action, carries out second-time burning, thus produce
A raw product.
Further, the reaction of described intermediate zone is as follows:
2CO+O2=2CO2
2H2+O2=2H2O。
Further, by unburned for intermediate zone biological fuel gas CO and H2With a product CO2And H2O is delivered to
Three combustion zones, from bocca spray after making biological fuel gas burn completely under the effect of tertiary air, thus needed for providing
Heat.
Described heat can be used for following application, such as, for the heat exchange medium of biomass boiler, as the earthenware of aluminium melting furnace
Crucible heats, as the heating and thermal insulation in green house of vegetables winter, as the thermal source of warming.
Further, the reaction of described three combustion zones is as follows:
2CO+O2=2CO2
2H2+O2=2H2O。
Further, described biomass fuel include straw, sawdust, bagasse, rice chaff, biological particles, palm shell and/or
Almond.
The combustion method of biomass fuel of the present invention is suitable for all of biomass fuel, solves traditional combustion machine and is only capable of
Adapt to ash low, and a difficult problem for the high Wooden Biomass fuel of ash fusion point.Herbaceous biomass fuel is had well by the present invention
Adaptation ability, the application for biomass clean fuel opens wide space.The burning side of biomass fuel of the present invention
Method takes full advantage of the heat produced in combustion process, it is to avoid waste, improves utilization rate and energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the flow chart of the combustion method of biomass fuel of the present invention.
Fig. 2 is the structure chart of the combustor of biomass fuel of the present invention.
Detailed description of the invention
Embodiments provide the combustion method of a kind of biomass fuel, as it is shown in figure 1, the method includes:
Step 1, biomass fuel is positioned over primary combustion zone, under a wind action, carries out primary combustion for producing
Producing water vapor, monitors the temperature of described primary combustion zone simultaneously；
Step 2, when the temperature of described primary combustion zone is higher than predetermined threshold value, described water vapour and outside air are mixed
After be delivered in described primary combustion zone, so that the temperature of described primary combustion zone is less than this predetermined threshold value.
Specifically, described step 1 comprises the following steps:
On step 11, described grate biomass fuel being placed in described combustion furnace；
Step 12, inject water in described steam kettle type bell；
Step 13, primary air fan produce a wind action under, carry out biomass fuel described in primary combustion, simultaneously
Monitor the temperature of described primary combustion zone.
In above-mentioned steps, the execution sequence of step 11 and step 12 is commutative, i.e. can also first carry out step 12 and carry out
Step 11.
In order to be more clearly understood that the present invention, the embodiment of the present invention additionally provides the knot of the combustor of a kind of biomass fuel
Composition, as in figure 2 it is shown, the biomass combustion machine embodiment of the present invention includes that combustion furnace 1, steam kettle type bell 2, gas mix defeated
Sending component 3, temperature sensor 4 and control device (not shown).Wherein, equipped with grate 11, biomass in described combustion furnace
Fuel is positioned on described grate 11 burning.Described steam kettle type bell 2 is placed on described combustion furnace 1, and in be filled with water, described
Water vapour is produced during biomass fuel combustion.Described gas blending transportation assembly 3 connects described steam kettle type bell 2, extraneous sky
The bottom of grate 11 in gas and combustion furnace 1, to be delivered to institute after the water vapour in steam kettle type bell 2 and outside air being mixed
State in combustion furnace 1.Described temperature sensor 4 is positioned at the biomass fuel rest area on described grate.Described control device is (in figure
Not shown) it is electrically connected to described temperature sensor 4 and gas blending transportation assembly 3, to be gathered according to described temperature sensor 4
Temperature, control described gas blending transportation assembly 3 to water vapour and the mixed proportion of outside air and conveying wind-force.
Specifically, described gas blending transportation assembly 3 includes vapor communication pipe 31, gas mixing tube 32, combustion furnace connection
Pipe 33, steam control valve 34, air control valve 35 and the first blower fan 36.Wherein, institute is passed through in the outlet side of described first blower fan 36
State and be communicated to the bottom of grate 11 in described combustion furnace 1 combustion furnace communicating pipe 33.Described gas mixing tube 32 is communicated in described
Between inlet end and the air control valve 35 of one blower fan 36, and it is communicated in outside air by described air control valve 35.Described
One end of vapor communication pipe 31 is communicated in described steam kettle type bell 2, and the other end of described vapor communication pipe 31 is by described steaming
Steam control valve 34 is communicated in described gas mixing tube 32 one end near described air control valve 35.And then, can be steamed by regulation
Steam control valve 34 and the size of air control valve 35 and control air and the mixed proportion of water vapour in gas mixing tube 32, and then
By the first blower fan 36, the mixed air with water vapour is blown into the bottom of grate 11 in combustion furnace 1, thus carry
Aflame biomass fuel can be lowered the temperature by the mixed gas of water vapour, prevents the coking of biomass fuel.Described first
Blower fan 36 is used for producing First air and i.e. introduces oxygen.
In an embodiment of the present invention, still further comprise water inlet pipe 21, overflow pipe 22, ball-cock assembly 23 and steam to overflow
Mouth 24.Wherein, water inlet pipe 21 and overflow pipe 22 are communicated in steam kettle type bell 2, and the effect of water inlet pipe 21 is to steam kettle
Water filling in type bell 2, and the effect of overflow pipe 22 is to be got rid of by water unnecessary in steam kettle type bell 2, ball-cock assembly 23 is installed
At the water inlet pipe 21 in steam kettle type bell 2, with opening according to the water lev el control water inlet pipe 21 in steam kettle type bell 2
Close.Steam overfall 24 is opened in the top of steam kettle type bell 2, in order to discharge the water vapour in steam kettle type bell 2, prevents
The rising of steam kettle type bell 2 internal gas pressure.
In the more prioritization scheme of the embodiment of the present invention, described biomass combustion machine also include feed bin 51, wind stopping device 52,
Two blower fans 53 and feed pipe 54.Wherein, biomass fuel deposited by described feed bin 51 for temporarily.Described wind stopping device 52 is positioned at described
The bottom of feed bin 51, and it is communicated to the top of biomass fuel rest area in described combustion furnace 1 by described feed pipe 54.Described
The outlet side of the second blower fan 53 is connected to described feed pipe 54 one end near described wind stopping device 52, entering of described second blower fan 53
Gas end is communicated in outside air.Described control device can be electrically connected to wind stopping device 52 and the second blower fan 53 further, to control
State the blanking of biomass fuel, and by controlling the second blower fan 53 and then by feed pipe 54 biomass fuel in combustion furnace 1
The top air-supply of rest area.Described second blower fan 53 is used for producing secondary wind and i.e. introduces oxygen.Described second blower fan 53 except with
Carry out beyond second-time burning in introducing oxygen for intermediate zone, it is also possible to prevent from entering material for the flame of biomass fuel combustion
Storehouse 51.
It addition, the biomass combustion machine of the embodiment of the present invention also includes that whirlwind grid 12, described whirlwind grid 12 are positioned at institute
Stating the bottom of grate 11 in combustion furnace 1, described gas blending transportation assembly is communicated to described whirlwind grid 11.Thus, with water
The mixed gas of steam, in described combustion furnace 1, is that the biomass fuel being delivered up to grate 11 from whirlwind grid 11 is put
Put district, so can make the mixed gas with water vapour can be evenly into described biomass fuel rest area.
It addition, in order to make biomass fuel fully burn to obtain more heat energy, in the embodiment of the present invention, described
Biomass combustion machine also includes that burner 13, described burner 13 are installed on the sidewall of described combustion furnace 1, and near described steam
Pot type bell 2, the side-walls opening of described burner 13 is being installed in described combustion furnace 1 so that the flame in described combustion furnace 1 leads to
Cross described opening enter described burner 13 and spray from described burner.
With described burner 13, described biomass combustion machine also includes the 3rd blower fan 14 and burner communicating pipe 15.Its
In, the outlet side of described 3rd blower fan 14 is by being communicated in described burner 13, described 3rd wind described burner communicating pipe 15
The inlet end connection outside air of machine 14.So, when by the 3rd blower fan 14 to burner 13 air blast, can be to burner 13
The flame divided plays combustion-supporting effect.Meanwhile, described control device can be electrically connected to the 3rd blower fan 14 further, to control the 3rd wind
Machine 14 and then by blowing to described burner 13 described burner communicating pipe 15.Described 3rd blower fan 14 is used for producing tertiary air
I.e. introduce oxygen.
In the embodiment of the present invention, the furnace wall 16 of described combustion furnace 1 is refractory insulating layer.It addition, the furnace wall of described combustion furnace 1
16 are additionally provided with fire door 17 (such as dotted line frame in Fig. 2), in order to topple over residue and clean burner hearth.
The execution process of above-mentioned steps 11, is that biomass fuel is first poured into feed bin 51, afterwards by controlling device to closing
The control of wind device 52 so that biomass fuel enters combustion furnace 1 through feed pipe 54, and then falls into the primary combustion on grate 11
District.
Above-mentioned steps 13 and step 2 are the temperature by controlling device Real-time Collection temperature sensor 4, and then synthetically control
Steam control valve 34 processed, air control valve the 35, first blower fan the 36, second blower fan 53 and the action of the 3rd blower fan 14 so that be positioned at
Biomass fuel in combustion furnace 1 can burn fully and avoid coking.
The following is the explanation further to the embodiment of the present invention.
First biomass fuel is put into feed bin 51 stand-by.Steam kettle type bell 2 water filling is (the most excessive to the water level of regulation
The height of overflow pipe 22).By controlling device, steam control valve 34 and air control valve 35 are adjusted to maximum opening.In combustion
Burning machine starts forward direction steam kettle type bell and adds appropriate tap water, keeps automatic watering and liquid level control in combustor work process
System worked well processed makes stable level in set point, and fault alarm device starts.
Start wind stopping device 52 by controlling device, make biomass fuel through feed pipe 54, enter in the cavity of combustion furnace 1
On grate 11.
Open fire door 17, carry out primary combustion biomass fuel with the material that ignites, and close fire door 17.
By control device start the collection to the signal of temperature sensor 4 and and to first blower fan the 36, second blower fan 53,
3rd blower fan 14, feed bin 51 and wind stopping device, steam control valve 34 and air control valve 35 control to adjust accordingly.In burning
Formation primary combustion zone, primary combustion zone in stove 1, forms intermediate zone above the primary combustion zone in combustion furnace 1
(near feed pipe 54 opening), goes out three combustion zones of interruption-forming at burner 13.
Along with constantly carrying out of burning, primary combustion zone, intermediate zone, the temperature of three combustion zones raise rapidly.Steam
Water evaporation rate in steam-boiler type bell 2 is accelerated, and then, the air being mixed with a certain amount of steam passes through the first blower fan 36,
Primary combustion zone is entered through combustion furnace communicating pipe 33, whirlwind grid 12, grate 11.When the temperature of primary combustion zone is less than presetting threshold
During value, air control valve 35 aperture is increased by control device, steam control valve 34 aperture is reduced, increase by the first wind simultaneously
The frequency of machine 36 so that the temperature of primary combustion zone rises.When the temperature of primary combustion zone is higher than predetermined threshold value, by controlling
Air control valve 35 aperture is reduced, steam control valve 34 aperture is increased by device, reduces the frequency of the first blower fan 36 simultaneously, makes
The temperature obtaining primary combustion zone declines.
When the steam spill-out of steam overfall 24 is the biggest, by controlling device by suitable for the frequency of the second blower fan 53
Reduce, the frequency of the 3rd blower fan 14 is suitably increased simultaneously, and then the heat being sent to steam kettle type bell 2 can be reduced, reduce
The generation of water vapour.Preferably, described predetermined threshold value is 900 DEG C.Second blower fan and the 3rd blower fan are all to be controlled respectively by converter
System regulates respective air quantity to adapt to the change of combustor duty, and the second blower fan and the 3rd blower fan mainly provide burning institute
The oxygen needed.
In the embodiment of the present invention, the first blower fan 36 import is the mixed gas of air and steam, primary combustion zone anti-
Should be as follows:
2C+O2=2CO
C+H2O=CO+H2
Above grate 11, biomass fuel region forms combustion gasification (pyrolysis) region, i.e. primary combustion zone, once fires
Burning district and produce for the purpose of biological fuel gas by biomass pyrolytic, burning mainly provides the condition of pyrolysis, and temperature controls at 900 DEG C
The most a certain scope, and then guarantee the temperature ash fusion point less than used biological material of primary combustion zone, it is to avoid ash melts
Melt formation coking.First blower fan can be power be the high pressure positive blower of 750 watts, by Frequency Converter Control, according to how many tune of fuel
Saving suitable air quantity, steam is all transported to primary combustion zone, to regulate the ratio of air and steam according to actual needs
Example, such as the ratio of regulation outside air and steam is 10:1.
The embodiment of the present invention is additionally arranged temperature sensor and controls device, and then can ensure that the temperature of primary combustion zone controls
A certain scope below 900 DEG C, such as in the range of 800 DEG C-850 DEG C, it is ensured that the ash in biomass fuel does not melts, it is to avoid
Coking.
In the embodiment of the present invention, the material in intermediate zone burning is CO and H2, the reaction of intermediate zone is as follows:
2CO+O2=2CO2
2H2+O2=2H2O
And the mainly CO that traditional combustion stove burns in intermediate zone:
2CO+O2=2CO2
In the embodiment of the present invention, intermediate zone temperature is less than 900 DEG C, and main cause has two:
One: 2H2+O2=2H2O
Its two: the continuous evaporation endothermic of water in steam kettle type bell 2, serve and reduce and stable secondary combustion zone temperature
Function.The addition having hydrogen in intermediate zone is to react due to the addition of steam to get, in second-time burning is combustion furnace
A part for continuous-stable burning, the second blower fan air intake mainly prevents feeding layer and burns in feeding warehouse.
In the embodiment of the present invention, steam kettle type bell 2 produces steam, and for primary combustion zone, temperature is substantially close to water
Boiling point；And bell is unlikely to deform and ftractures.And tradition bell mostly is refractory material, poor thermal conductivity, calorific intensity is poor, and temperature is basic
At about 1200 DEG C, it is easily damaged.
In the embodiment of the present invention, due to the fuel storage area noncoking on grate in primary combustion zone, therefore First air (
One blower fan blows) can consistent pass through fuel bed, make stove burning highly stable.
In order to be more fully understood that the present invention, the present invention also provides for the enforcement of the combustion method of a kind of biomass fuel such as
Under:
As the firing equipment of external-heat (dry distillation type) biomass carbonizing furnace, it is heated to 400 to the 650 suitable temperature of degree,
Ensure that the pyrolytic reaction of biomass is within the scope of stable temperature.
The consumption of biomass fuel about 200 kgs/hr per hour.The ratio of water vapour and outside air is 1:6.First
The concrete frequency of blower fan, the second blower fan and the 3rd blower fan is respectively 20Hz, 30Hz and 35Hz, primary combustion zone, intermediate zone
Being respectively 800 ± 50 DEG C, 950 ± 50 DEG C and 1050 ± 50 DEG C with the actual temp of three combustion zones, the heat finally produced is about
Be 600,000 kilocalories/hour, and do not find coking phenomenon.
The advantage of the biomass combustion machine of the embodiment of the present invention and the combustion method of biomass fuel is:
Providing novel steam kettle type bell, this steam kettle type bell constantly feeds and evaporation due to water, though warm
Spending the highest bottom and also obtain dynamic equilibrium at about 100 DEG C, the high temperature that also can stand bottom flame with common carbon steel is made
With, compared with traditional fire-resistant bell, make simple, use reliable, will not burst apart, collapse, and, the steam of generation is just
Temperature regulation for primary combustion zone；The measurement and control of temperature of primary combustion zone and regulation, it is ensured that during biomass fuel combustion one
The temperature of secondary combustion zone is less than the ash fusion point of fuel, therefore, does not results in the softening of burning ashes and melts, so, Bu Huijie
Burnt；Due to will not coking, so the air feed of primary combustion zone remains unimpeded, combustor burning can be very steady, and effect is also
The best, and remove ashes and also become very easy；Introducing and the enforcement of temperature control measure due to steam so that grate
Fault rate reduces, and the life-span is greatly improved, and, the life-span of furnace wall refractory insulating layer also can be greatly improved；Open by controlling device
Dynamic to the collection of temperature sensor signal and to the first blower fan, the second blower fan, the 3rd blower fan, wind stopping device, air control valve, steam
Regulation valve controls to adjust accordingly, can reach preferable combustion efficiency；Owing to solving coking problem so that the present invention
Embodiment is suitable for all of biomass fuel, and solving traditional combustion machine, only to adapt to ash low, and high wooden of ash fusion point
A difficult problem for biomass fuel.The present invention has, to herbaceous biomass fuel, the ability of well adapting to, for biomass clean fuel
Application opens wide space.The embodiment of the present invention, burning subregion is reasonable, combustion process clean environment firendly, and equipment is installed
Debugging is simple, and process is simple and reliable, low cost of manufacture.
Claims (10)
1. the combustion method of a biomass fuel, it is characterised in that comprise the following steps:
Biomass fuel is positioned over primary combustion zone, under a wind action, carries out primary combustion for producing water vapour,
Monitor the temperature of described primary combustion zone simultaneously；
When the temperature of described primary combustion zone is higher than predetermined threshold value, after described water vapour and outside air being mixed, it is delivered to institute
State in primary combustion zone, so that the temperature of described primary combustion zone is less than this predetermined threshold value.
2. the combustion method of biomass fuel as claimed in claim 1, it is characterised in that described predetermined threshold value is 900 DEG C.
3. the combustion method of biomass fuel as claimed in claim 1, it is characterised in that described water vapour and described extraneous sky
The ratio of gas is 1:2 to 1:10.
4. the combustion method of biomass fuel as claimed in claim 1, it is characterised in that at biomass fuel in primary combustion
During district carries out primary combustion, when the temperature of primary combustion zone is less than predetermined threshold value, by increasing in primary combustion zone
The content of water vapour in the content of air and reduction primary combustion zone so that the temperature of described primary combustion zone returns to preset threshold
Value；When the temperature of primary combustion zone is higher than predetermined threshold value, by the content of air in minimizing primary combustion zone with increase once
The content of water vapour in combustion zone so that the temperature of described primary combustion zone returns to predetermined threshold value.
5. the combustion method of biomass fuel as claimed in claim 1, it is characterised in that the reaction of described primary combustion zone is such as
Under:
2C+O2=2CO
C+H2O=CO+H2。
6. the combustion method of biomass fuel as claimed in claim 5, it is characterised in that at biomass fuel in primary combustion
District carries out primary combustion and produces biological fuel gas CO and H2After, by produced biological fuel gas CO and H2It is delivered to second-time burning
District, carries out second-time burning under secondary wind action, thus produces a product.
7. the combustion method of biomass fuel as claimed in claim 6, it is characterised in that the reaction of described intermediate zone is such as
Under:
2CO+O2=2CO2
2H2+O2=2H2O。
8. the combustion method of biomass fuel as claimed in claim 7, it is characterised in that by unburned for intermediate zone life
Substance combustible gas CO and H2With a product CO2And H2O is delivered to three combustion zones, makes biomass fuel under the effect of tertiary air
Gas sprays from bocca after burning completely, thus the heat needed for providing.
9. the combustion method of biomass fuel as claimed in claim 8, it is characterised in that the reaction of described three combustion zones is such as
Under:
2CO+O2=2CO2
2H2+O2=2H2O。
10. the combustion method of biomass fuel as claimed in claim 1, it is characterised in that described biomass fuel includes straw
Stalk, sawdust, bagasse, rice chaff, biological particles, palm shell and/or almond.
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| CN108180472A (en) * | 2017-12-06 | 2018-06-19 | 河南惠农土质保育研发有限公司 | The burner of charcoal charring process with Electromagnetic Control technology |
| CN113383980A (en) * | 2021-06-25 | 2021-09-14 | 湖南美瑞科技有限公司 | Material baking temperature control method based on combustor, combustor and readable storage medium |
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Application publication date: 20161116 |