CN104456607A - Secondary air blowing and chemical feeding combined structure of biomass boiler - Google Patents

Secondary air blowing and chemical feeding combined structure of biomass boiler Download PDF

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Publication number
CN104456607A
CN104456607A CN201410689650.1A CN201410689650A CN104456607A CN 104456607 A CN104456607 A CN 104456607A CN 201410689650 A CN201410689650 A CN 201410689650A CN 104456607 A CN104456607 A CN 104456607A
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China
Prior art keywords
air
biomass boiler
burner hearth
biomass
air blowing
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Application number
CN201410689650.1A
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Chinese (zh)
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CN104456607B (en
Inventor
潘鸿杰
顾利平
赵文辰
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Jiangsu Taihu Boiler Co Ltd
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Jiangsu Taihu Boiler Co Ltd
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Priority to CN201410689650.1A priority Critical patent/CN104456607B/en
Publication of CN104456607A publication Critical patent/CN104456607A/en
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Abstract

The invention provides a secondary air blowing and chemical feeding combined structure of a biomass boiler. The secondary air blowing and chemical feeding combined structure of the biomass boiler can effectively solve the problem that by the adoption of a biomass boiler formed by transforming a traditional coal-fired boiler, biomass fuel has a negative influence on a heated surface in the combustion process and can also guarantee that biomass particle fuel is fully combusted. A secondary air blowing device is arranged at a front arch of a hearth of the biomass boiler. A chemical feeding structure is further arranged in the secondary air blowing device. The secondary air blowing device blows secondary air into the hearth so as to accelerate smoke disturbance in the hearth, and a combustion assistant is sprayed to the hearth by the chemical feeding structure at the same time.

Description

The Secondary Air of biomass boiler, administration combining structure
Technical field
Biomass boiler technical field of structures of the present invention, is specially the Secondary Air of biomass boiler, administration combining structure.
Background technology
mostly existing biomass boiler is to be formed by traditional coal-fired boiler reform, its biomass combustion delivers to fire grate front portion by hopper by conveying airduct, be subject to high-temperature flue gas in fire grate front portion and carry wind action progressively preheating, drying, burning, simultaneously posteriorly move until burn on the drive of fire grate limit of burning below, last lime-ash falls into the slag notch after stove.Due to biomass fuel light weight, easily brought to sheaf space on burner hearth by inner flue gas of the stove when stove combustion thus to heating surface produce wearing and tearing and easy in fouling of heating surface; And fail Thorough combustion because biological particles floats, also cause serious biomass fuel to analyse carbon phenomenon, occur the phenomenon of over-emitting black exhaust, contaminated environment.
Summary of the invention
For the problems referred to above, the invention provides the Secondary Air of biomass boiler, administration combining structure, it effectively can solve the existing biomass fuel existed by the biomass boiler of traditional coal-fired boiler reform in combustion to the negative effect that heating surface produces, and can ensure biomass granule fuel Thorough combustion.
The Secondary Air of biomass boiler, administration combining structure, it is characterized in that: the burner hearth face arch place of biomass boiler is provided with secondary air-jet device, also be provided with drug delivery structure in described secondary air-jet device, described secondary air-jet device to spray feed Secondary Air in described burner hearth with described drug delivery structure while increasing the flue gas disturbance in described burner hearth to spray feed comburant in described burner hearth.
It is further characterized in that:
Described secondary air-jet device comprises secondary blast pipe and some nozzles, and described some nozzles are installed vertically on described secondary blast pipe along described secondary nozzle length direction, and described some nozzles are through described burner hearth face arch and described burner hearth UNICOM;
Described drug delivery structure comprises chemical feed pipe, and described chemical feed pipe is set in described secondary blast pipe, described chemical feed pipe is provided with some drug delivery adapter, described some drug delivery adapters and described some nozzle one_to_one corresponding UNICOMs;
The air inlet end of described secondary blast pipe is provided with butterfly valve.
It is further characterised in that:
The length of described some nozzles reduces gradually inside two laterals of described secondary blast pipe length direction.
Beneficial effect of the present invention is: it arranges secondary air-jet device at the burner hearth face arch place of biomass boiler and be provided with drug delivery structure in secondary air-jet device, it passes through drug delivery structure according to actual needs to spray feed comburant in burner hearth at secondary air-jet device while spray feed Secondary Air in burner hearth, Secondary Air can play the effect of flue gas in effective disturbance burner hearth on the one hand, inner flue gas of the stove is made fully to mix and produce vortex, extend the flying dust and the stroke of fly ash combustible material in stove that suspend, and the particle reduced in burner hearth in flue gas, dust is brought to sheaf space on burner hearth, thus reduce wearing and tearing and the dust stratification of boiler heating surface, can play effectively combustion-supporting to spray feed auxiliary agent in burner hearth on the other hand, catalysis, cracking, ensure biomass granule fuel Thorough combustion, thus carbon phenomenon is analysed in minimizing, avoid the situation of over-emitting black exhaust, and the Secondary Air blowed in burner hearth, partial air can be provided by burning biomass particle to the suspension in burner hearth, also be conducive to improving the thermal efficiency of boiler, energy-conservation and environmental protection, the butterfly valve that the air inlet end that secondary sprays to pipe is arranged, can regulate Secondary Air to the dosage of air quantity and drug delivery structure.
Accompanying drawing explanation
Fig. 1 be the secondary air-jet device of biomass boiler kind of the present invention schematic diagram is set;
Fig. 2 is the secondary spray wind of of the present invention kind of biomass boiler, the horizontal layout schematic diagram of administration combining structure.
Detailed description of the invention
See Fig. 1 and Fig. 2, burner hearth face arch 6 place of biomass boiler is provided with secondary air-jet device, also be provided with drug delivery structure in secondary air-jet device, secondary air-jet device to spray feed Secondary Air in burner hearth with drug delivery structure while increasing the flue gas disturbance in burner hearth to spray feed comburant in burner hearth.Comburant can be a kind of or several combination in combustion adjuvant, catalyst, cracking agent
Wherein, secondary air-jet device comprises secondary blast pipe 3 and some nozzles 8, and some nozzles 8 are installed vertically on secondary blast pipe 3 along the length direction of secondary nozzle airduct 3, and some nozzles 8 are through burner hearth face arch 6 and burner hearth 9 UNICOM;
Drug delivery structure comprises chemical feed pipe 4, and chemical feed pipe 4 is set in secondary blast pipe 3, chemical feed pipe 4 is provided with some drug delivery adapters 10, some drug delivery adapters 10 and some nozzle 8 one_to_one corresponding UNICOMs;
The air inlet end of secondary blast pipe 3 is provided with butterfly valve 5.
The length of some nozzles 8 reduces gradually inside two laterals of secondary blast pipe length direction, can effectively increase transverse injection region, increases the flue gas disturbance in burner hearth.
Adopt Secondary Air of the present invention, administration combining structure, its biomass fuel combustion efficiency is high, and smoke abatement and dust control performance is good, effectively can reduce the discharge of pernicious gas and dust, effectively can overcome black smoke problem biomass granule fuel ignition combustion event easily producing and analyses carbon and cause, environmental protection efficiency is remarkable simultaneously.
In Fig. 1,1 is boiler feed bucket, and 2 is charging airduct, and biomass granule fuel is fallen by boiler feed bucket 1 and falls into the fire grate 7 top burning in burner hearth 9 in the effect that blows of charging airduct 2.In Fig. 2, A is to being the signal of dosing direction.

Claims (5)

1. Secondary Air, the administration combining structure of biomass boiler, it is characterized in that: burner hearth face arch (6) place of biomass boiler is provided with secondary air-jet device, also be provided with drug delivery structure in described secondary air-jet device, described secondary air-jet device to spray feed Secondary Air in burner hearth with described drug delivery structure while increasing the flue gas disturbance in burner hearth to spray feed medicament in burner hearth.
2. Secondary Air, the administration combining structure of biomass boiler according to claim 1, it is characterized in that: described secondary air-jet device comprises secondary blast pipe (3) and some nozzles (8), described some nozzles (8) are installed vertically on described secondary blast pipe (3) along secondary nozzle wind (3) length direction, and described some nozzles (8) are through burner hearth face arch (6) and burner hearth (9) UNICOM.
3. Secondary Air, the administration combining structure of biomass boiler according to claim 2, it is characterized in that: described drug delivery structure comprises chemical feed pipe (4), described chemical feed pipe (4) is set in described secondary blast pipe (3), described chemical feed pipe (4) is provided with some drug delivery adapter (10), described some drug delivery adapter (10) and described some nozzles (8) one_to_one corresponding UNICOM.
4., according to Secondary Air, the administration combining structure of described biomass boiler arbitrary in Claims 2 or 3, it is characterized in that: the air inlet end of described secondary blast pipe (3) is provided with butterfly valve (5).
5. Secondary Air, the administration combining structure of biomass boiler according to claim 4, is characterized in that: the length of described some nozzles (8) reduces gradually inside two laterals of described secondary blast pipe (3) length direction.
CN201410689650.1A 2014-11-27 2014-11-27 The Secondary Air of biomass boiler, administration composite structure Active CN104456607B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410689650.1A CN104456607B (en) 2014-11-27 2014-11-27 The Secondary Air of biomass boiler, administration composite structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410689650.1A CN104456607B (en) 2014-11-27 2014-11-27 The Secondary Air of biomass boiler, administration composite structure

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CN104456607A true CN104456607A (en) 2015-03-25
CN104456607B CN104456607B (en) 2019-03-22

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1458445A (en) * 2003-06-18 2003-11-26 中国矿业大学(北京校区) Graded air blowing catalytic burning technology
CN2603297Y (en) * 2002-12-17 2004-02-11 镇江市电站辅机厂 Nozzle adaptive for dry desulfurization
EP1517085A2 (en) * 2003-09-16 2005-03-23 Praxair Technology, Inc. Low NOx combustion using cogenerated oxygen and nitrogen streams
CN201852128U (en) * 2010-11-19 2011-06-01 郑州中鼎锅炉股份有限公司 Multi-purpose biomass boiler
CN103090406A (en) * 2011-11-01 2013-05-08 嘉兴市特种设备检测院 Biomass boiler
CN203203247U (en) * 2013-04-16 2013-09-18 杭州蓝禾新能源工程技术有限公司 Novel biomass-briquette-fired organic heat carrier boiler
CN204372973U (en) * 2014-11-27 2015-06-03 江苏太湖锅炉股份有限公司 A kind of Secondary Air of biomass boiler, administration combining structure

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2603297Y (en) * 2002-12-17 2004-02-11 镇江市电站辅机厂 Nozzle adaptive for dry desulfurization
CN1458445A (en) * 2003-06-18 2003-11-26 中国矿业大学(北京校区) Graded air blowing catalytic burning technology
EP1517085A2 (en) * 2003-09-16 2005-03-23 Praxair Technology, Inc. Low NOx combustion using cogenerated oxygen and nitrogen streams
CN201852128U (en) * 2010-11-19 2011-06-01 郑州中鼎锅炉股份有限公司 Multi-purpose biomass boiler
CN103090406A (en) * 2011-11-01 2013-05-08 嘉兴市特种设备检测院 Biomass boiler
CN203203247U (en) * 2013-04-16 2013-09-18 杭州蓝禾新能源工程技术有限公司 Novel biomass-briquette-fired organic heat carrier boiler
CN204372973U (en) * 2014-11-27 2015-06-03 江苏太湖锅炉股份有限公司 A kind of Secondary Air of biomass boiler, administration combining structure

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