CN104654279B - Biomass boiler denitration burner and double burner biomass boiler - Google Patents
Biomass boiler denitration burner and double burner biomass boiler Download PDFInfo
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- CN104654279B CN104654279B CN201510073991.0A CN201510073991A CN104654279B CN 104654279 B CN104654279 B CN 104654279B CN 201510073991 A CN201510073991 A CN 201510073991A CN 104654279 B CN104654279 B CN 104654279B
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Abstract
The present invention proposes a kind of biomass boiler denitration burner, its combustion system includes combuster and the burner in combustion chamber, one end middle part of combustion chamber has charging aperture and air inlet, the other end of combustion chamber has flame lance, especially, the outer layer of flame lance is provided with coaxial jet pipe outer tube, and jet pipe outer tube has swirl air duct with flame lance, the characteristics of it has simple structure and high combustion efficiency.A kind of double burner biomass boiler is proposed again, it includes boiler body, upper collecting chamber is provided with boiler body, lower header, upper drum and lower drum, boiler front arch aditus laryngis lower section has charging aperture, especially, being located on face arch has afterburning mouthful between aditus laryngis and charging aperture, the flame lance of biomass boiler denitration burner of the invention is stretched into boiler body by the afterburning mouthful of boiler body, the outer wall of jet pipe outer tube is tightly connected with the afterburning mouth of boiler body makes the Whirl deposite tank of swirl air duct be entered in boiler body by afterburning mouthful, it has the thermal efficiency high, the characteristics of energy-conserving and environment-protective.
Description
Technical field
The present invention relates to boiler combustion equipment, specifically using particulate biomass as fuel boiler-burner.
Background technology
Biomass fuel is by agricultural waste（Include stalk, sawdust, bagasse, rice chaff etc.）As raw material, through powder
The operations such as broken, mixing, extruding, drying, are made block or granular fuel.Biomass fuel is a kind of Novel clean-fuel,
The features such as with renewable, clean environment firendly, but there is also the defects, existing one such as heat energy is low, consumption is big, burning velocity is slow
Kind of biomass boiler as disclosed in the Chinese patent of Application No. 200810137245.3, its include boiler body and spiral to
Material machine, the base that boiler body has base, front wall, rear wall, face arch and rear arch, boiler is provided with traveling-grate stoker, screw feeder
Machine supplies biomass fuel on boiler body extroversion traveling-grate stoker.During this boiler operatiopn, biomass fuel is by chain furnace
Dispatch enters stove chamber inner combustion, and hydrocarbon root CH is contained in the flue gas for producing that burnsi、NOx、、O、H2, C and CnHmDeng, can be caused after discharge combustion
Material is wasted, and is also polluted the environment, it is therefore necessary to improve.
The content of the invention
The purpose of the present invention is to propose to a kind of biomass boiler denitration burner, it has simple structure and efficiency of combustion
High the characteristics of, a kind of double burner biomass boiler is proposed again, it is entered by biomass boiler denitration burner of the invention
Row afterburning, effectively reduces harmful exhaust emissions, improves the efficiency of combustion of fuel, high, energy-conserving and environment-protective with the thermal efficiency
Feature.
The purpose of the present invention can be achieved through the following technical solutions：
Biomass boiler denitration burner, includes feed system, combustion system and air feed system；The combustion system
Burner including combuster and in combustion chamber, one end middle part of combustion chamber has charging aperture and air inlet, combustion chamber
The other end there is flame lance.
The feed system includes hopper, feed pipe, screw feeder bar and reducing motor, and reducing motor is installed on feed
Pipe is outer, and the middle part of feed pipe has charging aperture and connects the bottom of logical hopper, and screw feeder bar is horizontally placed in feed pipe, spiral
Feed bar is passed by one end of feed pipe and connects the output shaft of reducing motor, and the other end of feed pipe has material inlet and connects
The charging aperture of logical combustion chamber.
The air feed system includes primary air piping, and primary air piping is arranged in burning outdoor and connects the air intake of logical combustion chamber
Mouthful.
The outer layer of the flame lance is provided with coaxial jet pipe outer tube, the passage between jet pipe outer tube and flame lance
It is swirl air duct, swirl air duct is closed near one end of combustion chamber, the other end has air outlet, and at least 3 are provided with swirl air duct
Individual blade, jet pipe outer tube side has air inlet；The air feed system also includes bellows and secondary air channel, and secondary air channel will
Bellows are connected logical with the air inlet of jet pipe outer tube.
Prioritization scheme, the primary air piping and bellows of the air feed system pass through airduct connecting fan.
Double burner biomass boiler, it includes boiler body, main burner and principal screw batcher, in boiler body
It is provided with upper collecting chamber, lower header, upper drum and lower drum.
Upper collecting chamber and lower header connect the gas radiation room of the logical burner hearth and upper end for constituting lower end, pot by fin panel casing
Furnace body has face arch and rear arch respectively in the front-end and back-end of burner hearth.
Upper drum and lower drum are placed in smoke convection case, and convection bank, convection bank are provided with the smoke convection case
Two ends connect logical upper drum and lower drum respectively, gas radiation room, smoke convection case and smoking box are sequentially connected logical, smoking box
End there is exhaust opening, is successively disposed with economizer and air preheater along flue gas discharge direction in the smoking box.
The bottom of the burner hearth is provided with main burner, and main burner is traveling-grate stoker, and the traveling-grate stoker includes fire grate
Housing, the chain located at fire grate housing both sides and across the fire grate on two chains, the bottom of fire grate housing and boiler body
Sealing even makes fire grate be located in burner hearth.
The aditus laryngis lower section of the face arch of boiler body has charging aperture, and the principal screw batcher is located at outside boiler body, its
Main hopper and main feed pipe are included, the main hopper bottom has the main feed of main material inlet, main feed pipe and hopper bottom
Mouth connection is logical, and principal screw feed bar is provided with the main feed pipe, and main feed pipe is by conveying pipeline and the charging aperture of boiler body
Connection is logical.
Being located on the face arch of boiler body has afterburning mouthful between aditus laryngis and charging aperture, correspondence afterburning mouthful sets outside boiler body
There is afterburning burner, the afterburning burner is biomass boiler denitration burner of the invention, the biomass pot
The flame lance of stove denitration burner is stretched into the burner hearth of boiler body by the afterburning mouthful of boiler body, biomass boiler denitration
The outer wall of the jet pipe outer tube of burner is tightly connected with the afterburning mouth of boiler body makes the Whirl deposite tank of swirl air duct by afterburning
Mouth enters in the burner hearth of boiler body.
Prioritization scheme, the afterburning mouthful has 2 or 3, and each afterburning of correspondence mouth is provided with afterburning burning dress outside boiler body
Put.
When denitration burner of the invention works, biomass fuel is entered into combustion chamber from hopper through screw(-type) feeder
It is completely burned, the high-temperature flue gas that fuel is produced after burning spray into biomass of the invention from flame lance and jet pipe outer tube
In boiler, the nitrogen oxides NO produced after biomass fuel combustion on traveling-grate stokerx、With the material that flue gas is contained within H element,
There is redox reaction in the case where the effect of the high-temperature flue gas of oxygen is mixed with, nitrogen oxides is decomposed into nitrogen and moisture, so that
The generation and discharge of nitrogen oxides are reduced, and uncombusted material is burnt completely, increased fuel availability and improve boiler thermal effect
Rate.
The present invention has substantive distinguishing features following prominent and significant progress：Denitration burner of the invention is furnished with one
Secondary wind and Secondary Air, First air are blown into combustion chamber overheavy firing and high-temperature flue gas is sprayed into biology of the invention by flame lance
In matter boiler, Secondary Air forms Whirl deposite tank and sprays into biomass boiler of the invention in spout outer tube, cigarette in disturbance burner hearth
Gas, makes the flue gas in burner hearth be sufficiently mixed with oxygen and burns again, and the combustible in flue gas, thoroughly burning is complete, effectively reduces
Nitrogen oxides NOxDischarge and uncombusted material discharge, with the thermal efficiency is high, energy-conserving and environment-protective the characteristics of.
Brief description of the drawings
Fig. 1 is the structural representation of biomass boiler denitration burner of the invention.
Fig. 2 is the structural representation of double burner biomass boiler of the invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
With reference to Fig. 1, biomass boiler denitration burner includes feed system, combustion system and air feed system；It is described
Combustion system includes combuster 1 and the burner in combustion chamber 1, and one end middle part of combustion chamber 1 has charging aperture and enters
Air port, the outer layer that the other end of combustion chamber 1 has flame lance 2, flame lance 2 is provided with coaxial jet pipe outer tube 21, jet pipe
Passage between outer tube 21 and flame lance 2 is swirl air duct 20, and swirl air duct 20 closes near one end of combustion chamber, another
End has air outlet, and swirl air duct 20 is interior to be provided with 3 blades 22, and the side of jet pipe outer tube 21 has air inlet.
The feed system includes hopper 11, feed pipe 12, screw feeder bar 13 and reducing motor 14, reducing motor 14
It is installed on outside feed pipe 12, the middle part of feed pipe 12 has charging aperture and connects the bottom of logical hopper 11, the water of screw feeder bar 13
It is flat in feed pipe 12, screw feeder bar 13 is passed by one end of feed pipe 12 and connects the output shaft of reducing motor 14, is given
The other end of expects pipe 12 has material inlet and connects the charging aperture of logical combustion chamber 1.
The air feed system includes primary air piping 3, bellows 40 and secondary air channel 4, and primary air piping 3 is arranged in combustion chamber 1
Bellows 40 are connected logical with the air inlet of jet pipe outer tube 21 by air inlet that is outer and connecting logical combustion chamber 1, secondary air channel 4, once
Airduct 3 and bellows 40 are connected with blower fan by airduct 5（Do not show in figure）.
With reference to Fig. 2, double burner biomass boiler, it includes boiler body 6, main burner and principal screw batcher.
Upper collecting chamber 61, lower header 62, upper drum 63 and lower drum 64 are provided with boiler body.
Upper collecting chamber 61 and lower header 62 connect the flue gas spoke of the logical burner hearth 65 and upper end for constituting lower end by fin panel casing
Room 66 is penetrated, boiler body 6 has face arch 651 and rear arch 652 respectively in the front-end and back-end of burner hearth 65.
Upper drum 63 and lower drum 64 are placed in smoke convection case 67, and convection bank is provided with the smoke convection case 67
671, the two ends of convection bank 671 connect logical upper drum 63 and lower drum 64, gas radiation room 66, the and of smoke convection case 67 respectively
Smoking box 68 is sequentially connected logical, and the end of smoking box 68 has in exhaust opening 680, the smoking box 68 along flue gas discharge direction elder generation
After be disposed with economizer 69 and air preheater 7.
The bottom of the burner hearth 65 is provided with main burner, and main burner is traveling-grate stoker 9, and the traveling-grate stoker 9 is included
Fire grate housing 91, the chain 92 located at the both sides of fire grate housing 91 and across the fire grate on two chains 92, fire grate housing 91 with
The bottom end seal of boiler body 6 even makes fire grate be located in burner hearth 65.
The aditus laryngis lower section of the face arch 651 of boiler body 6 has charging aperture, and the principal screw batcher is located at boiler body 6
Outward, it includes main hopper 8 and main feed pipe 81, and the bottom of main hopper 8 has main material inlet, and main feed pipe 81 connects 1 master and gives
Material mouth, is provided with principal screw feed bar 82 in the main feed pipe 81, and main feed pipe 81 is entered by conveying pipeline 83 and boiler body 6
Material mouth connection is logical.
Being located on the face arch 651 of boiler body 6 has 2 afterburnings mouthful between aditus laryngis and charging aperture, the outer correspondence of boiler body 6
Afterburning mouth is provided with afterburning burner, and the afterburning burner is above-mentioned biomass boiler denitration burner, the biology
The flame lance 2 of matter Denitration in Boiler burner is stretched into the burner hearth 65 of boiler body 6 by the afterburning mouthful of boiler body 6, biological
The outer wall of the jet pipe outer tube 21 of matter Denitration in Boiler burner is tightly connected with the afterburning mouth of boiler body 6 makes swirl air duct 20
Whirl deposite tank entered in the burner hearth 65 of boiler body 6 by afterburning mouthful.
Biomass boiler denitration burner of the invention carries out aftercombustion to the nitrogen oxides in burner hearth 65, by nitrogen oxygen
Compound is reduced into nitrogen and water, nitrogen oxides in effluent discharge capacity is reduced 50% content, while the material of uncombusted is complete
Burning, improves the thermal efficiency of boiler, also reduces the tar content in flue gas.
Claims (3)
1. biomass boiler denitration burner, includes feed system, combustion system and air feed system；The combustion system bag
Include combuster（1）With located at combustion chamber（1）Interior burner, combustion chamber（1）One end middle part have charging aperture and air inlet,
Combustion chamber（1）The other end there is flame lance（2）；
The feed system includes hopper（11）, feed pipe（12）, screw feeder bar（13）And reducing motor（14）, slow down electricity
Machine（14）It is installed on feed pipe（12）Outward, feed pipe（12）Middle part there is charging aperture and logical hopper is connected（11）Bottom, spiral shell
Rotation feed bar（13）It is horizontally placed at feed pipe（12）It is interior, screw feeder bar（13）By feed pipe（12）One end pass and connect and subtract
Speed motor（14）Output shaft, feed pipe（12）The other end there is material inlet and logical combustion chamber is connected（1）Charging aperture；
The air feed system includes primary air piping（3）, primary air piping（3）It is arranged in combustion chamber（1）The logical combustion chamber of outer and connection
（1）Air inlet；
It is characterized in that：The flame lance（2）Outer layer be provided with coaxial jet pipe outer tube（21）, jet pipe outer tube（21）With
Flame lance（2）Between passage be swirl air duct（20）, swirl air duct（20）One end closing, other end tool near combustion chamber
There are air outlet, swirl air duct（20）Inside it is provided with least 3 blades（22）, jet pipe outer tube（21）Side has air inlet；It is described
Air feed system also includes bellows（40）And secondary air channel（4）, secondary air channel（4）By bellows（40）With jet pipe outer tube（21）'s
Air inlet connection is logical；
The primary air piping of air feed system（3）And bellows（40）By airduct（5）Be connected with blower fan, or air feed system primary air piping
（3）And bellows（40）Pipe is connected with blower fan respectively.
2. double burner biomass boiler, it includes boiler body, main burner and principal screw batcher；
Upper collecting chamber (61), lower header (62), upper drum (63) and lower drum (64) are provided with boiler body (6)；
Upper collecting chamber (61) and lower header (62) connect the flue gas of the logical burner hearth (65) and upper end for constituting lower end by fin panel casing
Radiation chamber (66), boiler body（6）In burner hearth（65）Front-end and back-end respectively have face arch（651）And rear arch（652）；
Upper drum（63）And lower drum（64）It is placed in smoke convection case（67）It is interior, the smoke convection case（67）Inside it is provided with convection tube
Beam（671）, convection bank（671）Two ends connect logical upper drum respectively（63）And lower drum（64）, gas radiation room（66）, cigarette
Gas convection current case（67）And smoking box（68）It is sequentially connected logical, smoking box（68）End there is exhaust opening (680), the smoking box
(68) economizer (69) and air preheater (7) successively are disposed with along flue gas discharge direction in；
The burner hearth（65）Bottom be provided with main burner, main burner is traveling-grate stoker（9）, the traveling-grate stoker（9）Including
There is fire grate housing（91）, located at fire grate housing（91）The chain of both sides（92）With across located at two chains（92）On fire grate, stove
Row's housing（91）With boiler body（6）Bottom end seal even make fire grate be located at burner hearth（65）It is interior；
The aditus laryngis lower section of the face arch (651) of boiler body (6) has charging aperture, and the principal screw batcher is located at boiler body
（6）Outward, it includes main hopper（8）With main feed pipe（81）, the main hopper（8）Bottom has main material inlet, main feed pipe
（81）With main hopper（8）The main material inlet connection of bottom is logical, the main feed pipe（81）Inside it is provided with principal screw feed bar（82）, it is main
Feed pipe（81）By conveying pipeline（83）With boiler body（6）Charging aperture connection it is logical；
It is characterized in that：Boiler body（6）Face arch（651）Upper being located at has afterburning mouthful, boiler sheet between aditus laryngis and charging aperture
Body（6）Outer correspondence afterburning mouth is provided with afterburning burner, and the afterburning burner is de- for biomass boiler described in claim 1
Nitre burner, the flame lance of the biomass boiler denitration burner（2）By boiler body（6）Afterburning mouthful stretch into pot
Furnace body（6）Burner hearth（65）It is interior, the jet pipe outer tube of biomass boiler denitration burner（21）Outer wall and boiler body
（6）Afterburning mouth be tightly connected and make swirl air duct（20）Whirl deposite tank boiler body mouthful is entered by afterburning（6）Burner hearth（65）It is interior.
3. double burner biomass boiler according to claim 2, it is characterised in that：The afterburning mouthful has 2 or 3,
Boiler body（6）Outer each afterburning mouthful that corresponds to is provided with afterburning burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510073991.0A CN104654279B (en) | 2015-02-12 | 2015-02-12 | Biomass boiler denitration burner and double burner biomass boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510073991.0A CN104654279B (en) | 2015-02-12 | 2015-02-12 | Biomass boiler denitration burner and double burner biomass boiler |
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| CN104654279B true CN104654279B (en) | 2017-05-31 |
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| CN112197259A (en) * | 2020-09-29 | 2021-01-08 | 武汉中海信能源科技发展有限公司 | Biomass boiler low-nitrogen low-sulfur emission internal circulation combustion system |
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| CN201706483U (en) * | 2010-06-27 | 2011-01-12 | 朱春华 | Biomass semi-gasification automatic control combustion engine |
| CN202109471U (en) * | 2011-06-25 | 2012-01-11 | 山东百川同创能源有限公司 | Biomass low-nitrogen direct-fired boiler |
| CN202432524U (en) * | 2011-12-13 | 2012-09-12 | 中国轻工业长沙工程有限公司 | Multi-fuel waste incinerator |
| CN102620279B (en) * | 2012-02-13 | 2014-08-06 | 东莞市盈信节能投资有限公司 | Full-film wall biomass boiler manufacturing method and full-film wall biomass boiler |
| CN102679322A (en) * | 2012-05-14 | 2012-09-19 | 开平市雅科机电设备有限公司 | Biomass burning machine of rotary furnace bridge |
| JP6120274B2 (en) * | 2013-03-31 | 2017-04-26 | 株式会社Ｄｅｍｓ | Biomass energy production system |
| CN204534544U (en) * | 2015-02-12 | 2015-08-05 | 广州迪森热能设备有限公司 | Biomass boiler denitration burner and double burner biomass boiler |
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Effective date of registration: 20201229 Address after: 213000 Xinbei District, Changzhou City, Jiangsu Province, 21 Pioneering West Road Patentee after: DEVOTION (CHANGZHOU) BOILER Co.,Ltd. Patentee after: GUANGZHOU DEVOTION THERMAL TECHNOLOGY Co.,Ltd. Address before: 510760 No. 3 canglian two road, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee before: GUANGZHOU DEVOTION THERMAL FACILITY Co.,Ltd. Patentee before: GUANGZHOU DEVOTION THERMAL TECHNOLOGY Co.,Ltd. |
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Address after: No. 21, Chuangye West Road, Xinbei District, Changzhou City, Jiangsu Province, 212300 Patentee after: Desen (Changzhou) Energy Equipment Co.,Ltd. Patentee after: GUANGZHOU DEVOTION THERMAL TECHNOLOGY Co.,Ltd. Address before: 213000 Xinbei District, Changzhou City, Jiangsu Province, 21 Pioneering West Road Patentee before: DEVOTION (CHANGZHOU) BOILER Co.,Ltd. Patentee before: GUANGZHOU DEVOTION THERMAL TECHNOLOGY Co.,Ltd. |