CN106838971A - A kind of biomass bundling fuel chain-grate boiler air feed system - Google Patents
A kind of biomass bundling fuel chain-grate boiler air feed system Download PDFInfo
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- CN106838971A CN106838971A CN201710217457.1A CN201710217457A CN106838971A CN 106838971 A CN106838971 A CN 106838971A CN 201710217457 A CN201710217457 A CN 201710217457A CN 106838971 A CN106838971 A CN 106838971A
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- 239000000446 fuel Substances 0.000 title claims abstract description 80
- 239000002028 Biomass Substances 0.000 title claims abstract description 52
- 238000002347 injection Methods 0.000 claims abstract description 28
- 239000007924 injection Substances 0.000 claims abstract description 28
- 239000000779 smoke Substances 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 13
- 239000003546 flue gas Substances 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 abstract description 76
- 239000000470 constituent Substances 0.000 description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 14
- 229910052799 carbon Inorganic materials 0.000 description 14
- 239000004744 fabric Substances 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 10
- 239000001301 oxygen Substances 0.000 description 10
- 229910052760 oxygen Inorganic materials 0.000 description 10
- 238000001556 precipitation Methods 0.000 description 6
- 230000008020 evaporation Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 208000035126 Facies Diseases 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000000977 initiatory effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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
- F23L1/00—Passages or apertures for delivering primary air for combustion
- F23L1/02—Passages or apertures for delivering primary air for combustion by discharging the air below the fire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- 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
- F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
-
- 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
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2217/00—Intercepting solids
- F23J2217/40—Intercepting solids by cyclones
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Solid-Fuel Combustion (AREA)
Abstract
The invention discloses a kind of biomass bundling fuel chain-grate boiler air feed system, it includes being arranged on primary air system below traveling-grate stoker, and primary air system is constituted by along arrange successively preceding wind cabin section, middle nozzle segment and the rear wind cabin section of setting of traveling-grate stoker conveying direction；Preceding wind cabin section includes at least one wind cabin, and the air-out direction of wind cabin points to traveling-grate stoker；Middle nozzle segment includes injection supervisor, injection branch pipe and nozzle, injection supervisor arrange along traveling-grate stoker conveying direction, multiple injection branch pipes are disposed with injection supervisor along its length, arrangement sets multiple nozzles to each injection branch pipe along its length, and the air-out direction of nozzle points to traveling-grate stoker；Wind cabin section includes at least one wind cabin afterwards, and the air-out direction of wind cabin points to traveling-grate stoker.With air feed system be combined the biomass whole combustion process of bundling fuel by the present invention, according to different combustion phases, arranges different air supply modes, more preferable adapted biomass bundling fuel chain boiler combustion.
Description
Technical field
The invention belongs to biomass combustion technical field, and in particular to a kind of biomass bundling fuel chain-grate boiler air feed system
System.
Background technology
At present, boiler air supply mode mainly has：Malleation air feed, negative pressure air feed, balance three kinds of air supply modes of air feed, and it is biological
Matter combustion system is broadly divided into：It is traditional to dissipate burning, powder suspension burning, bundling burning, shaped granule four kinds of combustion systems of burning, no
Same combustion system, different types of boiler select different air supply modes.Life is mainly used at present for biomass chain-grate boiler
Material bundling fuel and shaped fuel, current biomass chain-grate boiler air supply mode indiscriminately imitate combustion coal chain boiler air feed system substantially
System, First air uses wind cabin even distributing wind mode.Have that volume is big, air is difficult to permeate due to biomass bundling fuel, burn
The characteristics of later stage flying dust is serious, therefore bundling fuel combustion most significantly has the disadvantage to be difficult to grill thoroughly, the combustion process of bundling fuel
There is very big difference with other fuel combustions, be unsuitable for indiscriminately imitating original chain-grate boiler air feed system.Original wind cabin even distributing wind mode
Cause bundling fuel combustion situation and thermo parameters method in burner hearth undesirable.
The content of the invention
The present invention is in order to solve weak point of the prior art, there is provided a kind of biomass bundling fuel chain-grate boiler air feed
System, the biomass whole combustion process of bundling fuel is combined with air feed system, according to different combustion phases, is arranged different
Air supply mode, more preferable adapted biomass bundling fuel chain boiler combustion.
In order to solve the above technical problems, the present invention is adopted the following technical scheme that：A kind of biomass bundling fuel chain-grate boiler
Air feed system, it includes being arranged on the primary air system below traveling-grate stoker, and primary air system is by along traveling-grate stoker conveying direction
Arrange successively setting preceding wind cabin section, middle nozzle segment and rear wind cabin section composition；Preceding wind cabin section includes at least one wind cabin, wind cabin
Air-out direction points to traveling-grate stoker；Middle nozzle segment includes injection supervisor, injection branch pipe and nozzle, and supervisor is defeated along traveling-grate stoker for injection
Send direction to arrange, be disposed with multiple injection branch pipes on injection supervisor along its length, each injection branch pipe is grown along it
The arrangement of degree direction sets multiple nozzles, and the air-out direction of nozzle points to traveling-grate stoker；Wind cabin section includes at least one wind cabin, wind afterwards
The air-out direction in storehouse points to traveling-grate stoker.
Each injection branch pipe is perpendicular and parallel with the traveling-grate stoker with the injection supervisor.
It also includes being arranged on secondary air system on chimney arch, and chimney arch is included in chain fire-gate before being sequentially arranged above
Arch, hogging and rear arch, hogging are made up of vertical foldede flame wall, and the top of hogging is connected with burner hearth crown wall, rear arch by arch wall and
Extend vertically upward firebreak composition, firebreak be located between face arch and rear arch, and firebreak top and top furnace wall between
Exhaust gases passes are remained with, the bottom of firebreak is connected with the front end of arch wall, the rear end of arch wall is downwardly inclined and extends to and rear stove
It is connected thereto at wall, exhaust gases passes is remained between the bottom of hogging and the arch wall of rear arch；Respectively it is provided with face arch and rear arch
Overfiren air port, on face arch on overfiren air port and rear arch overfiren air port to be oppositely arranged, overfiren air port is located at two on rear arch on face arch
The upside in secondary air port, and the ejection angle of overfiren air port is downward-sloping on face arch, the ejection angle of overfiren air port is on rear arch
It is inclined upwardly.
It also includes being arranged on the smoke processing system of smoke outlet, and smoke processing system is included along air-out direction successively
The economizer of connect setting, air preheater, cyclone dust collectors and sack cleaner, economizer are connected with air outlet.
Air-introduced machine is arranged on the smoke processing system.
Frequency converter is installed on the air-introduced machine.
The air feed blower fan of the primary air system and secondary air system selects air blower.
Frequency converter is installed on the air blower.
The beneficial effects of the invention are as follows：
1）The biomass bundling fuel chain-grate boiler air feed system and the laboratory bundling fuel thermogravimetric organic knot of experimental combustion process
Close, combustion process of the bundling fuel on chain is divided into different combustion phases, different combustion phases select different confessions
Wind mode and air quantity；
The present invention combines the combustion process of biomass bundling fuel, according to bundling fuel combustion feature, by biomass bundling fuel
Whole combustion process is combined with air feed system, according to the experimental data on thermogravimetric testing stand, by the right fuel of biomass bundling
Whole combustion process on traveling-grate stoker is divided into the different stages：Moisture evaporation stage, fugitive constituent precipitation phase, fugitive constituent
With fixed carbon burning coexistence phase, residual carbon combustion phases.Because in different combustion phases, combustion position is different, required wind
Amount size is also different.
At the burning initial stage（Now biomass bundling fuel combustion is simultaneously moved to preceding wind cabin section）, it is the combustion of biomass bundling fuel
Moisture evaporation and fugitive constituent precipitation phase are burnt, also unstable due to burning, institute's required airflow, wind speed are all unsuitable excessive, therefore, preceding
First air uses wind cabin even distributing wind at wind cabin section 2, and air quantity, wind speed are all smaller, to adapt to the unstable shape of initiation combustion that burns
Condition.
In burning mid-term（Now biomass bundling fuel combustion is simultaneously moved to middle nozzle segment front portion）, it is the combustion of biomass bundling
Material burning Volatile and fixed carbon burning coexistence phase, the characteristics of have size big due to biomass bundling fuel itself,
Temperature and oxygen are difficult diffusion, therefore, in bundling fuel combustion mid-term, fugitive constituent precipitation phase can last longer, it is and solid
The burning for determining carbon coexists the long period.In order that oxygen can be penetrated into inside bundling fuel, strengthen bundling fuel internal-combustion,
This stage uses high speed nozzle air supply mode（3 air quantity abundances before i.e. middle nozzle segment, wind speed is larger）, First air is blown with high speed
Enter inside bundling fuel.
In the burning middle and later periods（Now biomass bundling fuel combustion is simultaneously moved to middle nozzle segment rear portion）, the volatilization of bundling fuel
Part substantially completely separate out, be the combustion phases of fixed carbon, now bundling fuel is more loose, but still keep certain outer
Shape size, to make oxygen go deep into inside bundling fuel, the burning of reinforcing bundling fuel inside fixed carbon is burning the middle and later periods once
Elegance slow speed jet（The i.e. middle rear portion air quantity of nozzle segment 3 weakens, and wind speed is smaller）, the combustion of reinforcing bundling fuel inside fixed carbon
Burn.
Phase after combustion（Now biomass bundling fuel combustion is simultaneously moved to rear wind cabin section）, bundling fuel appearance and size is
Burning is caved in, and similar to scattered burning, because biomass combustion flying dust phenomenon is than more serious, therefore uses wind in the bundling fuel combustion later stage
Storehouse cloth wind, makes residual charcoal burn totally.
2）It is difficult to grill thoroughly for biomass bundling fuel, oxygen is difficult infiltration, fugitive constituent is difficult the characteristics of separating out, First air
The middle nozzle segment of system chooses multiple uniform arrangements, and the nozzle with certain penetration power carries out air feed, and oxygen is penetrated into bundling combustion
Material is internal, while taking fugitive constituent out of burning.
3）Primary air system is combined wind cabin cloth wind with nozzle cloth wind facies, in flameholding, after being difficult in the burning grilled thoroughly
Phase uses nozzle cloth wind, and wind cabin cloth wind is used in the serious late combustion of flying dust, improves bundling fuel combustion situation, enhances
Combustion process.
4）Present invention additionally comprises the secondary air system being arranged on chimney arch, chimney arch is included in chain fire-gate top and sets successively
Face arch, hogging and the rear arch put, hogging are made up of vertical foldede flame wall, the firebreak that rear arch extends by arch wall and vertically upward
Composition, firebreak be located between face arch and rear arch, and firebreak top and top furnace wall between remain with exhaust gases passes, firebreak
Bottom be connected with the front end of arch wall, the rear end of arch wall is downwardly inclined and extends to and is connected thereto with rear furnace wall, face arch and after
Overfiren air port is respectively provided with arch, on face arch on overfiren air port and rear arch overfiren air port to be oppositely arranged, Secondary Air on face arch
Mouth is located at the upside of overfiren air port on rear arch, and the ejection angle of overfiren air port is downward-sloping, Secondary Air on rear arch on face arch
Mouthful ejection angle to be inclined upwardly, by above-mentioned arrangement, secondary air system with certain exhaust duct of inclination angle arranged relative two, due to
Biomass fugitive constituent is higher, so extracting flue gas as secondary wind regime, on the one hand causes that the fugitive constituent of uncombusted in flue gas is abundant
Burning, on the other hand strengthens the flue gas disturbance in burner hearth, improves stove chamber inner combustion situation.
5）Present invention additionally comprises the smoke processing system for being arranged on smoke outlet, smoke processing system is included along air-out side
To the economizer, air preheater, cyclone dust collectors and the sack cleaner that are sequentially connected setting, economizer is connected with air outlet；
Air-introduced machine is arranged on the smoke processing system, is easy to process the flue gas discharged, reduce pollution.
6）The air feed blower fan of primary air system is variable ratio frequency changer blower fan, and wind cabin air quantity is adjustable, and nozzle is replaceable, to adapt to difference
The biomass bundling fuel of species, in the change of different combustion phases institutes required airflow；
First air, Secondary Air use air blower, burning initial stage and later stage First air to use wind cabin cloth wind, flue gas afterbody to use air inducing
Machine, to reduce fly ash content in flue gas.Air blower and air-introduced machine change rotation speed of fan using frequency converter, and then adjust air quantity
Size, realizes Boiler pressure control.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the enlarged drawing of primary air system in Fig. 1
Fig. 3 is the front view of middle nozzle segment；
Fig. 4 is the top view of middle nozzle segment；
Fig. 5 is the right view of middle nozzle segment.
Specific embodiment
Specific embodiment of the invention is elaborated below in conjunction with accompanying drawing.
As shown in Figures 1 to 5, a kind of biomass bundling fuel chain-grate boiler air feed system of the invention, it includes setting
Primary air system below traveling-grate stoker 1, primary air system by setting of arranging successively along traveling-grate stoker conveying direction preceding wind
Storehouse section 2, middle nozzle segment 3 and rear wind cabin section 4 are constituted；Preceding wind cabin section 2 includes at least one wind cabin, and the air-out direction of wind cabin points to chain
Bar fire grate 1；Middle nozzle segment 3 includes injection supervisor 31, injection branch pipe 32 and nozzle 33, and injection supervisor 31 is along traveling-grate stoker conveying side
To arrangement, multiple injection branch pipes 32 are disposed with injection supervisor 31 along its length, each injection branch pipe 32 with spray
Blow supervisor 31 perpendicular and parallel with traveling-grate stoker 1.Arrangement sets multiple sprays to each injection branch pipe 32 along its length
Mouth 33, the air-out direction of nozzle 33 points to traveling-grate stoker 1；Wind cabin section 4 includes at least one wind cabin afterwards, and the air-out direction of wind cabin refers to
To traveling-grate stoker 1.
It is difficult to grill thoroughly for biomass bundling fuel, oxygen is difficult infiltration, fugitive constituent is difficult the characteristics of separating out, First air system
The middle nozzle segment 3 of system chooses multiple uniform arrangements, and the nozzle 33 with certain penetration power carries out air feed, and oxygen is penetrated into bundling combustion
Material is internal, while taking fugitive constituent out of burning；First air is combined wind cabin cloth wind with nozzle cloth wind facies, in flameholding, is difficult
The burning middle and later periods grilled thoroughly uses nozzle cloth wind, and wind cabin cloth wind is used in the serious late combustion of flying dust, improves bundling fuel
Combustion position, enhances combustion process.
Present invention additionally comprises the secondary air system being arranged on chimney arch, chimney arch is included in chain fire-gate being sequentially arranged above
Face arch 5, hogging 6 and rear arch 7, hogging 6 is made up of vertical foldede flame wall, and the top of hogging 6 is connected with burner hearth crown wall, rear arch 7
The firebreak for extending by arch wall and vertically upward is constituted, and firebreak is located between face arch and rear arch, and the top of firebreak with
Exhaust gases passes are remained between the furnace wall of top, the bottom of firebreak is connected with the front end of arch wall, and the rear end of arch wall is downwardly inclined and prolongs
Extend and be connected thereto with rear furnace wall, exhaust gases passes are remained between the bottom of hogging 6 and the arch wall of rear arch 7；Face arch 5 and rear arch
Overfiren air port is respectively provided with 7, on face arch 5 on overfiren air port 51 and rear arch 7 overfiren air port 71 to be oppositely arranged, on face arch 5
Overfiren air port 51 is located at the upside of overfiren air port 71 on rear arch 7, and the ejection angle of overfiren air port 51 is to dip down on face arch 5
Tiltedly, the ejection angle of overfiren air port 71 is to be inclined upwardly on rear arch 7.
By above-mentioned arrangement, secondary air system with certain exhaust duct of inclination angle arranged relative two, due to biomass fugitive constituent compared with
Height, so extracting flue gas as secondary wind regime, on the one hand causes that the fugitive constituent of uncombusted in flue gas fully burns, and on the other hand adds
Flue gas disturbance in strong burner hearth, improves stove chamber inner combustion situation.
Present invention additionally comprises the smoke processing system for being arranged on smoke outlet, smoke processing system is included along air-out direction
It is sequentially connected economizer 8, air preheater 9, cyclone dust collectors 10 and the sack cleaner 11 of setting, economizer 8 and air outlet
Connection.
Air-introduced machine is arranged on the smoke processing system, frequency converter is installed on air-introduced machine.Smoke processing system is easy to right
The flue gas of discharge is processed, and reduces pollution.
The air feed blower fan of the primary air system and secondary air system selects air blower, and frequency conversion is provided with air blower
Device.The air feed blower fan of primary air system is variable ratio frequency changer blower fan, and wind cabin air quantity is adjustable, and nozzle is replaceable, different types of to adapt to
Biomass bundling fuel, in the change of different combustion phases institutes required airflow；
First air, Secondary Air use air blower, burning initial stage and later stage First air to use wind cabin cloth wind, flue gas afterbody to use air inducing
Machine, to reduce fly ash content in flue gas.Air blower and air-introduced machine change rotation speed of fan using frequency converter, and then adjust air quantity
Size, realizes Boiler pressure control.Can also be subtracted using the actual intake of mass air flow sensor record at air blower and air-introduced machine simultaneously
The error that the theoretical intake for being calculated by frequency converter less is caused.
The present invention is organically combined with laboratory bundling fuel thermogravimetric experimental combustion process, by combustion of the bundling fuel on chain
Burning process is divided into different combustion phases, and different combustion phases select different air supply mode and air quantity；
The present invention combines the combustion process of biomass bundling fuel, according to bundling fuel combustion feature, by biomass bundling fuel
Whole combustion process is combined with air feed system, according to the experimental data on thermogravimetric testing stand, by the right fuel of biomass bundling
Whole combustion process on traveling-grate stoker is divided into the different stages：Moisture evaporation stage, fugitive constituent precipitation phase, fugitive constituent
With fixed carbon burning coexistence phase, residual carbon combustion phases.Because in different combustion phases, combustion position is different, required wind
Amount size is also different.
At the burning initial stage（Now biomass bundling fuel combustion is simultaneously moved to preceding wind cabin section 2）, it is biomass bundling fuel
Burning moisture evaporation and fugitive constituent precipitation phase, also unstable due to burning, institute's required airflow, wind speed are all unsuitable excessive, therefore,
First air uses wind cabin even distributing wind at preceding wind cabin section 2, and air quantity, wind speed are all smaller, unstable to adapt to burning initiation combustion
Situation.
In burning mid-term（Now biomass bundling fuel combustion is simultaneously moved to the front portion of middle nozzle segment 3）, it is biomass bundling
Fuel combustion Volatile and fixed carbon burning coexistence phase, because biomass bundling fuel itself has the big spy of size
Point, temperature is difficult diffusion with oxygen, therefore, in bundling fuel combustion mid-term, fugitive constituent precipitation phase understands last longer, with
The burning of fixed carbon coexists the long period.In order that oxygen can be penetrated into inside bundling fuel, strengthen bundling fuel internal-combustion,
High speed nozzle air supply mode is used in this stage（3 air quantity abundances before i.e. middle nozzle segment, wind speed is larger）, by First air with a high speed
It is blown into inside bundling fuel.
In the burning middle and later periods（Now biomass bundling fuel combustion is simultaneously moved to the rear portion of middle nozzle segment 3）, bundling fuel waves
Hair part substantially completely separates out, is the combustion phases of fixed carbon, and now bundling fuel is more loose, but still keeps certain
Appearance and size, to make oxygen go deep into inside bundling fuel, the burning of reinforcing bundling fuel inside fixed carbon, in the burning middle and later periods one
Secondary elegance slow speed jet（The i.e. middle rear portion air quantity of nozzle segment 3 weakens, and wind speed is smaller）, the combustion of reinforcing bundling fuel inside fixed carbon
Burn.
Phase after combustion（Now biomass bundling fuel combustion is simultaneously moved to rear wind cabin section 4）, bundling fuel appearance and size
Burn and caved in, similar to scattered burning, because biomass combustion flying dust phenomenon is than more serious, therefore used in the bundling fuel combustion later stage
Wind cabin cloth wind, makes residual charcoal burn totally.
Above example is only used to illustrative and not limiting technical scheme, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those within the art that：Still the present invention can be modified or be waited
With replacement, any modification or partial replacement without departing from the spirit and scope of the present invention, it all should cover in power of the invention
In the middle of sharp claimed range.
Claims (8)
1. a kind of biomass bundling fuel chain-grate boiler air feed system, it is characterised in that：It includes being arranged on traveling-grate stoker lower section
Primary air system, primary air system by along traveling-grate stoker conveying direction arrange successively setting preceding wind cabin section, middle nozzle segment and
Wind cabin section is constituted afterwards；Preceding wind cabin section includes at least one wind cabin, and the air-out direction of wind cabin points to traveling-grate stoker；Middle nozzle segment includes
Injection supervisor, injection branch pipe and nozzle, injection supervisor arrange along traveling-grate stoker conveying direction, on injection supervisor along its length
Multiple injection branch pipes are disposed with, arrangement sets multiple nozzles, the air-out of nozzle to each injection branch pipe along its length
Point to traveling-grate stoker in direction；Wind cabin section includes at least one wind cabin afterwards, and the air-out direction of wind cabin points to traveling-grate stoker.
2. biomass bundling fuel chain-grate boiler air feed system according to claim 1, it is characterised in that：Each injection branch
Supervisor is blown described in Guan Junyu perpendicular and parallel with the traveling-grate stoker.
3. biomass bundling fuel chain-grate boiler air feed system according to claim 1 and 2, it is characterised in that：It is also wrapped
The secondary air system being arranged on chimney arch is included, chimney arch is included in the chain fire-gate face arch being sequentially arranged above, hogging and rear arch,
Hogging is made up of vertical foldede flame wall, and the top of hogging is connected with burner hearth crown wall, what rear arch extended by arch wall and vertically upward
Firebreak constitute, firebreak be located between face arch and rear arch, and firebreak top and top furnace wall between remain with exhaust gases passes,
The bottom of firebreak is connected with the front end of arch wall, and the rear end of arch wall is downwardly inclined and extends to and is connected thereto with rear furnace wall, in
Exhaust gases passes are remained between the bottom of arch and the arch wall of rear arch；Overfiren air port is respectively provided with face arch and rear arch, on face arch
To be oppositely arranged, overfiren air port is located at the upside of overfiren air port on rear arch to overfiren air port on face arch on overfiren air port and rear arch, and
The ejection angle of overfiren air port is downward-sloping on face arch, and the ejection angle of overfiren air port is to be inclined upwardly on rear arch.
4. biomass bundling fuel chain-grate boiler air feed system according to claim 3, it is characterised in that：It also includes setting
Put the smoke processing system in smoke outlet, smoke processing system include along air-out direction be sequentially connected setting economizer,
Air preheater, cyclone dust collectors and sack cleaner, economizer are connected with air outlet.
5. biomass bundling fuel chain-grate boiler air feed system according to claim 4, it is characterised in that：At the flue gas
Air-introduced machine is arranged in reason system.
6. biomass bundling fuel chain-grate boiler air feed system according to claim 5, it is characterised in that：The air-introduced machine
On frequency converter is installed.
7. biomass bundling fuel chain-grate boiler air feed system according to claim 3, it is characterised in that：The First air
The air feed blower fan of system and secondary air system selects air blower.
8. biomass bundling fuel chain-grate boiler air feed system according to claim 7, it is characterised in that：The air blower
On frequency converter is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710217457.1A CN106838971B (en) | 2017-04-05 | 2017-04-05 | Biomass bundling fuel chain boiler air supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710217457.1A CN106838971B (en) | 2017-04-05 | 2017-04-05 | Biomass bundling fuel chain boiler air supply system |
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| CN106838971A true CN106838971A (en) | 2017-06-13 |
| CN106838971B CN106838971B (en) | 2023-11-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477566A (en) * | 2017-09-28 | 2017-12-15 | 安徽辰瑞达农业设备有限公司 | Fuel homogenizer and combustion furnace system |
| CN109405276A (en) * | 2018-09-30 | 2019-03-01 | 农业部规划设计研究院 | A kind of straw bundle burning boiler cleaning heating system |
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| CN106838971B (en) | 2023-11-03 |
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