CN110476015A - System and method for the bio-fuel that burns - Google Patents
System and method for the bio-fuel that burns Download PDFInfo
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- CN110476015A CN110476015A CN201880011851.2A CN201880011851A CN110476015A CN 110476015 A CN110476015 A CN 110476015A CN 201880011851 A CN201880011851 A CN 201880011851A CN 110476015 A CN110476015 A CN 110476015A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
- F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D1/00—Burners for combustion of pulverulent fuel
- F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/32—Incineration of waste; Incinerator constructions; Details, accessories or control therefor the waste being subjected to a whirling movement, e.g. cyclonic incinerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/38—Multi-hearth arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/10—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of field or garden waste or biomasses
-
- 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
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
- F23L9/02—Passages or apertures for delivering secondary air for completing combustion of fuel by discharging the air above the fire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/101—Combustion in two or more stages with controlled oxidant supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/30—Cyclonic combustion furnace
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/26—Biowaste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2219/00—Treatment devices
- F23J2219/10—Catalytic reduction devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2201/00—Pretreatment of solid fuel
- F23K2201/10—Pulverizing
- F23K2201/1006—Mills adapted for use with furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
Abstract
The present invention provides a kind of methods of bio-fuel that burns.This method comprises: introducing bio-fuel into the combustion chamber with the first order and the second level；Bio-fuel is set to burn while flowing from the first order to the second level with suspended state；And introduce the first air stream and the second air stream at the first order and at the second level respectively into combustion chamber, in order to the burning of bio-fuel.
Description
Background technique
Technical field
Embodiment of the present invention relates generally to energy production, and more particularly, to for the bio-fuel that burns
System and method.
The discussion in field
As the demand to renewable energy continues to increase, bio-fuel is increasingly used in production of energy.Specifically,
To generate steam, which then sends out to steamturbine many power plants (hereinafter referred to as " power plant ") burning bio-fuels
Motor energy supply.In many such power plants, bio-fuel is burnt on stoker grate in the combustion chamber.However, right
In the bio-fuel of specified rate, the bio-fuel that burns on stoker grate potential may generate relatively unpredictable and/or not
Controlled combustion reaction.As used herein, relative to combustion reaction, term " predictable " and " uncertain " refer to combustion
Burn a possibility that reaction will comply with prediction/calculating rate and/or stoichiometry.In general, the unpredictability of combustion reaction/can
Predictive higher, the stoichiometry for controlling combustion reaction is more difficult/easier, and the single nitrogen oxides generated by combustion reaction
The amount of (" NOx ") is bigger/fewer.Therefore, tend to produce as described above unpredictable combustion reaction based on stoker grate
Power plant generally produce a large amount of NOx.
Due to having determined that NOx promotees in formation acid rain, so many governments have limited the NOx row of bio-fuel burning power plant
Put limit.In order to meet such NOx emission limit, many bio-fuel burning power plants use selective non-catalytic reduction agent
(" SNCR ") and selective catalytic reducing agent (" SCR ").However, SNCR and SCR are resource-intensives and operate high
It is expensive.Ammonia (" NH3 ") is ejected into discharged flue gas to restore for NOx in addition, many SNCR are depended on.However, in mistake
NOx is restored using NH3 under the conditions of temperature accidentally, the risk with NOx formation and/or NH3 sliding in discharged flue gas.
Therefore, it is necessary to a kind of improvement system and method for the bio-fuel that burns.
Summary of the invention
In one embodiment, a kind of method of bio-fuel that burns is provided.The described method includes: to having first
Bio-fuel is introduced in the combustion chamber of grade and the second level；Make bio-fuel while flowing from the first order to the second level to suspend
State burning；And introduce the first air stream and the second air stream at the first order and at the second level respectively into combustion chamber, with
Convenient for the burning of bio-fuel.
In another embodiment, a kind of system for the bio-fuel that burns is provided.The system comprises have
The combustion chamber of the first order and the second level.The combustion chamber can be operated to provide the bio-fuel from the first order to institute
With the burning of suspended state while stating second level flowing.The combustion chamber also has the first injector and the second injector, institute
State the first injector and second injector can operate at the first order and at the second level to the burning
The first air stream and the second air stream are introduced in room, respectively in order to the burning of the bio-fuel.
In another embodiment, a kind of non-transitory computer-readable medium of store instruction is provided.It is stored
Instruction is configured as being suitable for controller: introducing bio-fuel into the combustion chamber with the first order and the second level；Make the life
Object fuel is burnt while flowing from the first order to the second level with suspended state；And at the first order and
The first air stream and the second air stream are introduced at the second level, respectively into the combustion chamber in order to the bio-fuel
Burning.
Detailed description of the invention
The following description to non-limiting embodiments is read by reference to attached drawing, is better understood with the present invention, in which:
Fig. 1 is the block diagram according to the system for the bio-fuel that burns of embodiment of the present invention；
Fig. 2 is the diagram according to the combustion chamber of Fig. 1 system of embodiment of the present invention；And
Fig. 3 is the cross-sectional view according to the burning zone of the combustion chamber Fig. 2 of embodiment of the present invention.
Specific embodiment
It will be detailed with reference to exemplary implementation scheme of the invention, its example is shown in the drawings.Whenever possible, In
In the case where non-repeated description, the same reference character used throughout the drawings refers to the same or similar part.
As used herein, term " substantially ", " generally " and " about " is indicated relative to being adapted for carrying out component or component
The ideal expectation condition of functional purpose, the condition in rationally achievable manufacture and assembling tolerance.As used herein, term
" real-time " refers to that user sufficiently perceives or enable a processor in time the level of the processing responding ability synchronous with external treatment.
As used herein, " being electrically coupled ", " electrical connection " and " electric connection " refers to that cited element either directly or indirectly connects,
So that electric current or other connection media can flow each other.Connection may include direct conduction connection (that is, not having capacitor, sense between two parties
Answer or active component), induction connection, capacitance connection, and/or any other suitable be electrically connected.Intervening elements may be present.Such as this
Used in text, term " fluidly connecting ", which refers to, connects cited element so that fluid (including liquid, gas and/or wait from
Daughter) it can flow each other.Therefore, as used herein, term " upstream " and " downstream " describe cited element relative in institute
Between the element of the reference and/or position of the flow path of fluid and/or gas that flows about.In addition, as used herein, phase
For particle, term " stream " refers to the continuous or approximate continuous flowing of particle.Also as used herein, term " also contacts " refers to
Cited object is closer to each other, and hot hot can be transmitted between them.As herein in addition used in, term " suspended state
Burning " is the process for instigating the fuel combustion being suspended in air.
In addition, although embodiments disclosed herein is described mainly with respect to power plant, it is to be understood that, it is of the invention
Embodiment be applicable to need limit and/or eliminate by bio-fuel burn caused by NOx emission any equipment and/or
Method, such as incinerator.
Referring now to Figure 1, system 10 according to embodiments of the present invention is shown, and the bio-fuel that is used to burn (12, figure
, such as bagasse, lancet (switchblade) and/or other green grass, timber, peat, straw, and/or other are suitable raw 2)
Object fuel.System 10 includes combustion chamber 14, and may also include the control at least one processor 18 and memory device 20
Device 16, grinding machine 22, SCR 24, and/or exhaust heap 26 processed.It will be appreciated that system 10 can form a part in power plant 28, wherein
Combustion chamber 14 is integrated in boiler 30, which generates steam to generate electric power via steam turbin generator 32.
It will be understood that grinding machine 22 can be operated to receive and handle the bio-fuel 12 for burning in combustion chamber 14,
That is, grinding machine 22 shreds, crushes and/or otherwise disposes the bio-fuel 12 for burning in combustion chamber 14.For example, In
In embodiment, bio-fuel 12 can be processed into the granularity less than or equal to about 2mm by grinding machine 22.In other embodiments,
Bio-fuel 12 can be processed into the granularity less than or equal to about 1mm by grinding machine 22.Grinding machine 22 can be non-screening type hammer-mill, this is non-
Screening type hammer-mill and the rapid draing tower being arranged at blender wheel exhaust fan-in mouth are integral.It then, will via conduit 34
Processed bio-fuel 12 is conveyed/is fed to combustion chamber 14 from grinding machine 22.
Combustion chamber 14 can operate the burning to receive and be convenient for bio-fuel 12, this causes to generate heat and flue gas.It can be through
Flue gas is sent to SCR 24 from combustion chamber 14 by conduit 36.In the embodiment that combustion chamber 14 is incorporated in boiler 30, it can catch
It obtains the heat for carrying out spontaneous combustion bio-fuel 12 and is used for for example generating steam via the water wall thermally contacted with flue gas, the steam
Then steam turbin generator 32 is sent to via conduit 38.
SCR 24 can be operated in the pre reduction flue gas that flue gas is discharged into atmosphere via conduit 40 and exhaust heap 26
NOx.
Turning now to Fig. 2, combustion chamber 14 has two or more grades 42 and 44, and respectively has multiple nozzle/sprays
One or more bellows 46 and 48 of emitter 50,52 and 54.Although grade 42 and 44 is portrayed as discrete and is spaced apart by Fig. 2,
It will be understood that in embodiments, grade 42 and 44 can be continuous and flush each other, that is, grade 42 and 44 can be smooth from one 42
Ground is transitioned into next 44.As shown in Fig. 2, first group of bellows 46 has nozzle 50 and 52, the nozzle can be operated will give birth to
Object fuel 12 and the first air stream 56 are introduced into the first order 42.It will be appreciated that the first air stream 56 can by primary air supply and
Both SAS Secondary Air Supplies generate.For example, in embodiments, bio-fuel 12 can be introduced the via primary air by nozzle 50
In level-one 42, while auxiliary air being introduced into the first order 42 via nozzle 52.It can be via nozzle 50 relative to primary air
The particle of bio-fuel 12 is introduced into combustion chamber 14 by the sliding velocity between about 0-100 feet per second.As used herein, art
Language sliding velocity refers to the speed and the speed for the primary air that bio-fuel 12 is conveyed via nozzle 50 of the particle of bio-fuel 12
Difference between degree.In embodiments, 100% bio-fuel can be sprayed in the first order 42 by nozzle 50.
Also as shown in Fig. 2, nozzle 50 and 52 can be disposed in one or more burning zones 60,62 and 64, that is, along burning
Vertical/longitudinal axis 58 of room 14 is arranged at same position and/or the group of neighbouring nozzle 50 and 52.For example, the first burning
Layer 60 may include the nozzle 50 for introducing bio-fuel 12 and primary air, and the second burning zone 62 may include the spray for introducing auxiliary air
Mouth 52, and third burning zone 64 may include the nozzle 50 for introducing bio-fuel 12 and primary air.Although homogenizing is retouched herein
Burning zone 60,62 and 64 is drawn, that is, each burning zone 60,62 and 64 includes the nozzle for only introducing primary air and bio-fuel
50 or any one of the nozzle 52 of auxiliary air is only introduced, it is to be understood that in embodiments, single burning zone 60,
62 and 64 may include both nozzle 50 and nozzle 52.In addition, while figure 2 show that being in three burning zones in the first order 42
60,62 and 64, it is to be understood that embodiment of the present invention can include any number of burning zone in the first order 42.
When being introduced into the first order 42, bio-fuel 12 and the first air stream 56 are ignited, so that bio-fuel 12 is being located
It burns when suspended state.As further shown in Figure 2, relative to the bio-fuel 12 being burning, the second level 44 is in the first order 42
Downstream.Therefore, because the convection current power that burning bio-fuel 12 generates, the particle of bio-fuel 12 when they undergo burning in
Rise in combustion chamber 14 or otherwise move, so that they flow to the second level 44 from the first order 42.In other words, it burns
Bio-fuel 12 form fireball 66, the fireball is across vertical axis 58 from the first order 42 to the second level 44.
As further shown in Figure 2, second group of bellows 48 have a nozzle 54, and the nozzle can be operated with by the second air stream
68 (such as the overfire airs and/or isolated overfire air for being closed coupling) are introduced into the second level 44.Therefore, as used herein,
Term " classification air ", " air classification ", " fractional combustion " and " burning classification " refers to will be via the first air stream 56 and second
The 12 consumption gas of bio-fuel that burn between the first order 42 and the second level 44 of air stream 68 are split.It will further know that being similar to
Nozzle 50 and 52 and burning zone 60,62 and 64, nozzle 54 can be disposed in one or more burning zones 70 and 72.
Fig. 3 is passed now to, the cross-sectional view of burning zone 60 is shown.It will be appreciated that in embodiments, bio-fuel 12
Can tangential firing, i.e., by bio-fuel 12 via nozzle 50 with the path of the primary air component of the first air stream 56 with from vertical
Axis 58 extends to the angle formed between the radial line 74 of nozzle 50It is introduced into the first order (42 in Fig. 2).In other words,
Nozzle 50 is via the primary air component of the first air stream 56 by 12 peripheral jet of bio-fuel to being in 58 center of vertical axis
Imaginary circle 66 (representing fireball).In some aspects, angleIt can be in the range of 2-10 degree.Although Fig. 3 is shown in
The nozzle 50 (being such as arranged in the turning of combustion chamber 14) in one burning zone 60, but in other embodiments, nozzle 50 can be set
It sets at the arbitrary point in the burning zone 60 except fireball 66.It will be understood that other burning zones (62,64,70 and 72 in Fig. 2)
Nozzle (50,52 and 54 in Fig. 2) can mode identical with the nozzle 50 of the first burning zone 60 shown in Fig. 3 be orientated.Cause
This, is when leaving nozzle 50, when the particle of bio-fuel 12 flow to the second level 44 from the first order 42, bio-fuel 12
Particle follows the flight path 76 of spiral shape such as screw bottle opener shape in fireball 66.In other words, tangential firing biology fires
Material 12 rotates fireball 66 around vertical axis 58.
Return again to Fig. 2, it will know, spiral flight path 76 is provided than traditional stoker grate combustion method to life
The more controlled combustion reaction of the particle of object fuel 12.Specifically, spiral flight path 76 makes flue gas around fireball 66
" eye "/center (i.e. vertical axis 58) circulation, this dilutes the oxygen concentration in fireball 66, thus delayed combustion reaction and/or temperature
Degree.In addition, delayed combustion reaction and/or ignition temperature are gone back in the classification of combustion reaction, which increases the de- NOx of combustion reaction
Energy.It will be appreciated that the aforementioned more preferable control provided to combustion reaction stoichiometry.Specifically, it can adjust the first air stream 56
The stoichiometry of combustion reaction is adjusted, in a predictive manner with the second air stream 68 to limit the generation of NOx.
Therefore, the first air stream 56 provides bigger or equal quantities combustion reaction institute consumption gas than the second air stream 68.
For example, in embodiments, the bio-fuel 12 that the first air stream 56 can provide about 50%-70% burns institute's consumption gas, this after
And bio-fuel 12 is adjusted between about 0.6-0.8 in the stoichiometry of the combustion reaction in the first order 42.It will manage
Solution, the second air stream 68 provide remaining combustion reaction institute consumption gas, this then counts the chemistry of the combustion reaction in the second level 44
Amount is adjusted to less than or equal to about 1.2.It will be understood that via fractional combustion reaction, (i.e. classification introduces the first air stream 56 and the
Two air streams 68) stoichiometry that adjusts the first order 42 and the second level 44 goes out the nitrogen (" N ") of bio-fuel 12 to be divided into the
Become dinitrogen (" N2 ") in level-one 42, this in the relevant uncertain stoichiometric condition of traditional stoker grate method
The case where formation NOx usually occurred down, is opposite.In other words, in embodiments, nitrogenous species waving from bio-fuel 12
Volatile material release, and then in the first order 42 by hydrocarbon intermediate reduction at N2.
Therefore, in certain aspects of the invention, before handling flue gas by SCR (24 in Fig. 1) and/or without using auxiliary
In the case where combustion-supporting material, burning bio-fuel 12 can produce the NOx of about 0.08lb/MBtu.As such, the case where not using SNCR
Under, SCR 24 can be further by the NOx reduction in the flue gas discharged to less than or equal to about 0.01lb/MBtu.
Finally, it is also understood that system 10 may include necessary electronic device, software, memory, reservoir, database,
Firmware, logic/state machine, microprocessor, communication link, display or other visions or Audio user interface, printing device, with
And for executing function described herein and/or realizing any other input/output interface of result described herein, these can be real-time
It executes.For example, as described above, system 10 may include being electrically connected with one or more components of system 10 in 16 shape of controller
At least one processor 18 and system storage/data storage device structure 20 of formula.Memory may include random access memory
(" RAM ") and read-only memory (" ROM ").At least one described processor may include one or more custom microprocessors and
One or more supplement coprocessor, mathematics coprocessor etc..The data storage device structure being discussed herein may include
Magnetic, optics and/or semiconductor memory it is appropriately combined, and may include such as RAM, ROM, flash drive, optical disc
Such as compact disk and/or hard disk or driver.
In addition, the software application for providing control to one or more components in the various parts of system 10 can be from meter
Calculation machine readable medium is read in the main memory of at least one processor.As used herein, term " computer-readable medium "
Be directed at least one processor 18 (or any other processor of equipment described herein) provide or participate in provide instruction with
In any medium of execution.Such medium can take many forms, including but not limited to non-volatile media and Volatile media.
Non-volatile media includes such as optics, magnetism or the disk of photomagnetism, such as memory.Volatile media includes that dynamic random is deposited
Access to memory (" DRAM "), typically comprises main memory.The common form of computer-readable medium includes such as floppy disk, flexibility
Disk, hard disk, tape, any other magnetic medium, CD-ROM, DVD, any other optical medium, RAM, PROM, EPROM or
EEPROM (read-only memory of electric erazable programmable), FLASH-EEPROM, any other memory chip or casket or computer can
Any other medium read.
Although in embodiments, in software application the execution of instruction sequence so that at least one processor executes sheet
Method/process described in text, but can be used hard-wired circuit to replace or in conjunction with for realizing the method for the present invention/process software
Instruction.Therefore, embodiment of the present invention is not limited to any specific combination of hardware and/or software.
It is also understood that above description is it is intended that illustrative rather than restrictive.For example, the embodiment above (and/or
Its aspect) it can be used in combination with each other.It, can many modifications may be made so that specific in addition, without departing from the present invention
Situation or material adapt to the teachings of the present invention content.
For example, in one embodiment, providing a kind of method of bio-fuel that burns.The described method includes: to tool
Bio-fuel is introduced in the combustion chamber for having the first order and the second level；Make bio-fuel while flowing from the first order to the second level
It is burnt with suspended state；And introduce the first air stream and the second air at the first order and at the second level respectively into combustion chamber
Stream, in order to the burning of bio-fuel.In certain embodiments, bio-fuel is introduced into combustion chamber further includes making biological combustion
The tangential firing at the first order of at least some of material.In certain embodiments, bio-fuel has less than or equal to about 2mm
Maximum particle size.In certain embodiments, first the second air stream of airflow ratio provides bigger or equal quantities bio-fuel
Burn institute's consumption gas.In certain embodiments, the first air stream provides bio-fuel burning institute's consumption of about 50%-70%
Gas.In certain embodiments, the bio-fuel that burns generates less than or the NOx equal to about 0.08lb/MBtu.In certain embodiment party
In case, bio-fuel is at least one of bagasse, timber, peat, straw and green grass.
Other embodiments provide a kind of system for the bio-fuel that burns.The system comprises with the first order and
The combustion chamber of the second level.Combustion chamber can be operated to provide bio-fuel while flowing from the first order to the second level to suspend
The burning of state.Combustion chamber also has the first injector and the second injector, first injector and second injector
It can operate to introduce the first air stream and the second air stream at the first order and at the second level respectively into combustion chamber, in order to
The burning of bio-fuel.In certain embodiments, the first injector can operate with via tangential firing at the first order to
At least some of bio-fuel is introduced in combustion chamber.In certain embodiments, the system also includes grinding machine, the grinding machines
It can operate so that bio-fuel is supplied to combustion chamber with the maximum particle size less than or equal to about 2mm.In certain embodiments,
First the second air stream of airflow ratio provides bigger or equal quantities bio-fuel burning institute's consumption gas.In certain embodiments
In, the first air stream provides bio-fuel burning institute's consumption gas of about 50%-70%.In certain embodiments, the system
Further include selective catalytic reducing agent, the selective catalytic reducing agent can operate with will the bio-fuel burning produced by
NOx emission be limited to less than or be equal to about 0.01lb/MBtu.In certain embodiments, bio-fuel be bagasse, timber,
At least one of peat, straw and green grass.
However, other embodiments provide a kind of non-transitory computer-readable medium of store instruction.The finger stored
Order is configured as being suitable for controller: introducing bio-fuel into the combustion chamber with the first order and the second level；Make the biology
Fuel is burnt while flowing from the first order to the second level with suspended state；And at the first order and institute
It states and introduces the first air stream and the second air stream at the second level respectively into the combustion chamber, in order to the combustion of the bio-fuel
It burns.In certain embodiments, at least some of bio-fuel is introduced into combustion chamber at the first order via tangential firing.
In certain embodiments, bio-fuel has the maximum particle size less than or equal to about 2mm.In certain embodiments, first
The second air stream of airflow ratio provides bigger or equal quantities bio-fuel burning institute's consumption gas.In certain embodiments,
One air stream provides bio-fuel burning institute's consumption gas of about 50%-70%.In certain embodiments, the burning of bio-fuel
It generates less than or the NOx equal to about 0.08lb/MBtu.
Therefore, compared with the method for traditional combustion bio-fuel such as stoker grate, by making bio-fuel to suspend
State, which is burnt and is classified, introduces combustion reaction institute consumption gas, and some embodiments of the invention generate significant lower amount of NOx.Tool
Body, some embodiments of the invention can be realized down to about 0.08lb/MBtu and make in the case where not using SCR
With the NOx emission realized in the case where not with the SCR of SCNR down to about 0.01lb/MBtu.By eliminating the needs to SCNR
Reach the NOx of the discharge of about 0.01lb/MBtu, some embodiments of the invention greatly reduce packet mode power plant
The operating cost of (encompassing power plant).In addition, by realizing the NOx emission down to 0.08lb/MBtu, this
It is those of conventionally used that the SCR of some embodiments of invention is smaller than traditional biological fuel power plant.
In addition, the tangential firing of bio-fuel 12 in some embodiments makes combustion reaction in the first order 42
" globally " (i.e. equably) occur.Therefore, some embodiments provide bio-fuels 12 and the first air stream 56 light and/
Or mixing, and improved flame holding, the high turbulent flow injection fuel and air without part.
Although the size and type of material described herein are intended to limit parameter of the invention, they are not limiting simultaneously
It and is exemplary implementation scheme.When looking back above description, many other embodiments to those skilled in the art will
It is obvious.Therefore, the scope of the present invention should refer to such claims of the appended claims and authorization
The full scope of equivalent form determines.In the dependent claims, term " including (including) " and " wherein (in
Which) " the pure English equivalent form as corresponding term " including (comprising) " and " wherein (wherein) ".In addition,
In following claims, term " first ", " second ", " third ", "upper", "lower", " bottom ", " top " etc. are only used
It marks, and is not intended to and numerical value or status requirement are applied to their object.In addition, the limitation of following claims is not
It is write with average value plus Function Format, and is not intended to and is construed to such limitation, unless and until such claims limit
System clearly uses phrase " mode being used for ... " after the explanation of the void function of other structures.
The written description uses examples to disclose several embodiments of the invention, including optimal mode, and also makes
Those of ordinary skill in the art can practice embodiment of the present invention, including manufacture and use any equipment or system and hold
The method of any combination of row.Patentable scope of the invention is defined by the claims, and may include ordinary skill people
Other examples that member expects.If these other examples have the structural detail not different from the literal language of claim,
Or if they include the equivalent structural elements with the literal language of claim without essential difference, these other example purports
Within the scope of the claims.
As used herein, it enumerates in the singular and should be by with the element or step of word "a" or "an" beginning
It is interpreted as being not excluded for multiple element or steps, this exclusion unless expressly stated.In addition, to " an implementation of the invention
The reference of scheme " is not intended to the presence for being interpreted to exclude the also additional embodiment comprising the feature.In addition, except non-clearly
Ground illustrates that otherwise "include", "comprise" or " having " include an element or the embodiment party of multiple element of particular community on the contrary
Case may include other this class components without the characteristic.
Since certain can be carried out in the present invention as stated above in the case where not departing from spirit and scope of the present invention involved in this paper
It is a little to change, it is intended that above-described all themes shown in the drawings should be interpreted only as showing showing for this paper inventive concept
Example, and should not be construed as limiting the invention.
Claims (20)
1. a kind of method for the bio-fuel that burns, comprising:
The bio-fuel is introduced into the combustion chamber with the first order and the second level；
The bio-fuel is set to burn while flowing from the first order to the second level with suspended state；And
The first air stream and the second air stream are introduced respectively into the combustion chamber at the first order and at the second level,
In order to the burning of the bio-fuel.
2. according to the method described in claim 1, wherein introducing the bio-fuel into combustion chamber further include:
Make the tangential firing at the first order of at least some of described bio-fuel.
3. method according to claim 1 or 2, wherein the bio-fuel has the maximum grain less than or equal to about 2mm
Degree.
4. according to the method in any one of claims 1 to 3, wherein the second air stream described in first airflow ratio mentions
For bigger or equal quantities bio-fuel burning institute's consumption gas.
5. according to the method described in claim 4, wherein first air stream provides the bio-fuel of about 50%-70%
Burn institute's consumption gas.
6. the method according to any one of claims 1 to 5, wherein the bio-fuel that burns generates less than or is equal to about
The NOx of 0.08lb/MBtu.
7. method according to any one of claim 1 to 6, wherein the bio-fuel is bagasse, timber, peat, rice
At least one of grass and green grass.
8. a kind of system for the bio-fuel that burns, comprising:
Combustion chamber, the combustion chamber have the first order and the second level, and can operate to provide the bio-fuel from institute
It states while the first order is flowed to the second level with the burning of suspended state；And
Wherein the combustion chamber also has the first injector and the second injector, first injector and second injector
It can operate to introduce the first air stream and second at the first order and at the second level respectively into the combustion chamber
Air stream, in order to the burning of the bio-fuel.
9. system according to claim 8, wherein first injector can operate with via tangential firing described
At least some of described bio-fuel is introduced at the first order into the combustion chamber.
10. system according to claim 8 or claim 9, further includes:
Grinding machine, the grinding machine can be operated so that the bio-fuel is supplied to institute with the maximum particle size less than or equal to about 2mm
State combustion chamber.
11. the system according to any one of claim 8 to 10, wherein the second air stream described in first airflow ratio
Bigger or equal quantities bio-fuel burning institute's consumption gas is provided.
12. system according to claim 11, wherein first air stream provides the biology combustion of about 50%-70%
Material burning institute's consumption gas.
13. the system according to any one of claim 8 to 12, further includes:
Selective catalytic reducing agent, the selective catalytic reducing agent can operate with will the bio-fuel burning caused by
NOx emission is limited to less than or is equal to about 0.01lb/MBtu.
14. the system according to any one of claim 8 to 13, wherein the bio-fuel be bagasse, timber, peat,
At least one of straw and green grass.
15. a kind of non-transitory computer-readable medium, the non-transitory computer-readable medium store instruction, described instruction are matched
Being set to is suitable for controller:
Bio-fuel is introduced into the combustion chamber with the first order and the second level；
The bio-fuel is set to burn while flowing from the first order to the second level with suspended state；And
The first air stream and the second air stream are introduced respectively into the combustion chamber at the first order and at the second level,
In order to the burning of the bio-fuel.
16. non-transitory computer-readable medium according to claim 15, wherein via tangential firing in the first order
Place introduces at least some of described bio-fuel into the combustion chamber.
17. non-transitory computer-readable medium according to claim 15 or 16 is less than wherein the bio-fuel has
Or the maximum particle size equal to about 2mm.
18. non-transitory computer-readable medium described in any one of 5 to 17 according to claim 1, wherein first air
It flows and provides bigger or equal quantities bio-fuel burning institute's consumption gas than second air stream.
19. non-transitory computer-readable medium according to claim 18, wherein first air stream provides about 50%-
70% bio-fuel burning institute's consumption gas.
20. non-transitory computer-readable medium described in any one of 5 to 19 according to claim 1, wherein the bio-fuel
Burning generate less than or the NOx equal to about 0.08lb/MBtu.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/435,740 | 2017-02-17 | ||
| US15/435,740 US20180238541A1 (en) | 2017-02-17 | 2017-02-17 | System and method for firing a biofuel |
| PCT/EP2018/052467 WO2018149651A1 (en) | 2017-02-17 | 2018-02-01 | System and method for firing a biofuel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110476015A true CN110476015A (en) | 2019-11-19 |
Family
ID=61521467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880011851.2A Pending CN110476015A (en) | 2017-02-17 | 2018-02-01 | System and method for the bio-fuel that burns |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20180238541A1 (en) |
| EP (1) | EP3583356B1 (en) |
| JP (1) | JP7027435B2 (en) |
| CN (1) | CN110476015A (en) |
| PL (1) | PL3583356T3 (en) |
| WO (1) | WO2018149651A1 (en) |
Citations (3)
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|---|---|---|---|---|
| US20060225424A1 (en) * | 2005-04-12 | 2006-10-12 | Zilkha Biomass Energy Llc | Integrated Biomass Energy System |
| EP3037724A1 (en) * | 2014-12-22 | 2016-06-29 | E.ON Sverige AB | A method for operating a fluidized bed boiler |
| CN105910097A (en) * | 2016-06-06 | 2016-08-31 | 西安交通大学 | System and method for achieving fuel reburning denitration through whirlwind cylinder grading of power station boiler |
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| US3658017A (en) * | 1971-01-04 | 1972-04-25 | Gen Electric | Incinerator |
| US3727563A (en) * | 1971-07-02 | 1973-04-17 | Gen Electric | Incinerator |
| US3831535A (en) * | 1973-11-02 | 1974-08-27 | Mill Conversion Contractor Inc | Wood waste burner system |
| JPS56916A (en) * | 1979-06-15 | 1981-01-08 | Hokkaido Togyo Kk | Method and apparatus for generating hot blast for incineration of chaff |
| US4582045A (en) * | 1981-12-17 | 1986-04-15 | Dorau Warren G | Heating apparatus |
| US4565137A (en) * | 1983-08-08 | 1986-01-21 | Aqua-Chem, Inc. | Bio-mass suspension burner |
| US4793322A (en) * | 1986-11-06 | 1988-12-27 | Shimek Ronald J | Direct-vented gas fireplace |
| US6269755B1 (en) * | 1998-08-03 | 2001-08-07 | Independent Stave Company, Inc. | Burners with high turndown ratio |
| JP2002195532A (en) * | 2000-12-20 | 2002-07-10 | Mitsubishi Heavy Ind Ltd | Method and system for evaluating environmental load in refuse incineration power plant and computer readable medium recording program of environmental load evaluation program |
| SE519605C2 (en) * | 2001-04-26 | 2003-03-18 | Swedish Bioburner System Ab | Solid fuel device and method |
| JP4919844B2 (en) | 2007-03-16 | 2012-04-18 | バブコック日立株式会社 | Fuel adjustment device and fuel adjustment method |
| US8117974B2 (en) * | 2007-08-03 | 2012-02-21 | The Mcburney Corporation | Biomass energy recovery apparatus |
| US20110100272A1 (en) * | 2009-08-20 | 2011-05-05 | Robert Joel Hasselbring | Vortex incinerator |
| JP2011127836A (en) * | 2009-12-17 | 2011-06-30 | Mitsubishi Heavy Ind Ltd | Solid fuel burning burner and solid fuel burning boiler |
| JP5897364B2 (en) | 2012-03-21 | 2016-03-30 | 川崎重工業株式会社 | Pulverized coal biomass mixed burner |
| JP6289343B2 (en) | 2014-11-05 | 2018-03-07 | 三菱日立パワーシステムズ株式会社 | boiler |
| US20170248307A1 (en) * | 2016-02-26 | 2017-08-31 | We2E | Vortex combustion boiler |
-
2017
- 2017-02-17 US US15/435,740 patent/US20180238541A1/en not_active Abandoned
-
2018
- 2018-02-01 CN CN201880011851.2A patent/CN110476015A/en active Pending
- 2018-02-01 EP EP18707851.4A patent/EP3583356B1/en active Active
- 2018-02-01 JP JP2019542143A patent/JP7027435B2/en not_active Ceased
- 2018-02-01 WO PCT/EP2018/052467 patent/WO2018149651A1/en unknown
- 2018-02-01 PL PL18707851.4T patent/PL3583356T3/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060225424A1 (en) * | 2005-04-12 | 2006-10-12 | Zilkha Biomass Energy Llc | Integrated Biomass Energy System |
| EP3037724A1 (en) * | 2014-12-22 | 2016-06-29 | E.ON Sverige AB | A method for operating a fluidized bed boiler |
| CN105910097A (en) * | 2016-06-06 | 2016-08-31 | 西安交通大学 | System and method for achieving fuel reburning denitration through whirlwind cylinder grading of power station boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| US20180238541A1 (en) | 2018-08-23 |
| PL3583356T3 (en) | 2023-03-06 |
| WO2018149651A1 (en) | 2018-08-23 |
| JP7027435B2 (en) | 2022-03-01 |
| JP2020510803A (en) | 2020-04-09 |
| EP3583356A1 (en) | 2019-12-25 |
| EP3583356B1 (en) | 2023-01-11 |
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