CN207006215U - Environment-friendly high-efficiency biomass Industrial Boiler - Google Patents
Environment-friendly high-efficiency biomass Industrial Boiler Download PDFInfo
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- CN207006215U CN207006215U CN201720646398.5U CN201720646398U CN207006215U CN 207006215 U CN207006215 U CN 207006215U CN 201720646398 U CN201720646398 U CN 201720646398U CN 207006215 U CN207006215 U CN 207006215U
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- secondary air
- air
- burner hearth
- environment
- industrial boiler
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
It the utility model is related to biomass boiler technology field, more particularly to environment-friendly high-efficiency biomass Industrial Boiler, including drum, burner hearth and vertical gas pass, in addition to the hot secondary air system and the external air preheater system of regulation Secondary Air temperature and exhaust gas temperature that Secondary Air is sent into burner hearth.Environment-friendly high-efficiency biomass Industrial Boiler described in the utility model, can make biomass fuel fully burn, and improve the efficiency of combustion of boiler, and can also reduce heat loss due to exhaust gas, so as to reduce boiler over-emitting black exhaust, the problems such as coking, corrosion.
Description
Technical field
It the utility model is related to biomass boiler technology field, and in particular to environment-friendly high-efficiency biomass Industrial Boiler.
Background technology
Home and abroad environment pollution problem at present is increasingly paid attention to by the whole society, and Industrial Boiler is as whole national economy
Dynamic foundation, it dissipates coal due to burning, and environmental protection equipment insufficient investment, boiler smoke discharge causes serious atmosphere pollution, is to make
One of main arch-criminal into haze.
In recent years, country advocates substitutes fire coal using biomass molding fuel, because biomass has special nature, its ash
The constituent contents such as part, sulphur, nitrogen are a kind of cleaning, the energy of environmental protection well below fire coal.But due to its combustion characteristics and coal
Larger difference be present, and its alkali metal content is high, if burning tissues are improper, easily cause boiler over-emitting black exhaust, coking, corrosion etc. and asks
Topic.Due to not doing abundant research to the combustion characteristics of biomass, many boiler factories are on the basis of original coal-burned industrial boiler
Slightly modified, the product for just declaring oneself is boiler special for biomass, is asked without the burning for fundamentally solving biomass fuel
Topic, actually this boiler effect is bad, brings more serious pollution to atmospheric environment on the contrary.
The content of the invention
The technical problems to be solved in the utility model is, overcomes the shortcomings of existing technology, there is provided environment-friendly high-efficiency biology
Matter Industrial Boiler, biomass fuel can be made fully to burn, improve the efficiency of combustion of boiler, and exhaust gas heat loss can also be reduced
Lose, so as to reduce boiler over-emitting black exhaust, the problems such as coking, corrosion.
To reach above-mentioned technical purpose, a kind of environment-friendly high-efficiency biomass Industrial Boiler described in the utility model, including pot
Cylinder, burner hearth and vertical gas pass, it is characterized in that：Also include hot secondary air system and the regulation that Secondary Air is sent into burner hearth
The external air preheater system of Secondary Air temperature and exhaust gas temperature.
Further, the inside of the burner hearth is connected by hot secondary air system with overfire air fan.
In the above-mentioned technical solutions, the drum is connected by external air preheater system with oxygen-eliminating device；It is described to hang down
Straight flue is connected by external air preheater system with overfire air fan.
Further, the external that the external air preheater system includes being used to improve Secondary Air temperature is empty pre-
Device, high-temperature economizer and low-level (stack-gas) economizer, the high-temperature economizer are arranged in the first order of vertical gas pass, the low-level (stack-gas) economizer
It is arranged in the second level of vertical gas pass.
Closer, the hot secondary air system includes being arranged on the igniting secondary air channel of lower furnace portion, is arranged on stove
Disturbance secondary air channel in the middle part of thorax and be arranged on lower furnace portion burn secondary air channel.
Yet further, the air side-entrance of the external air preheater connects with the outlet conduits of overfire air fan, described
The import of overfire air fan communicates with air, and the air side outlet of the external air preheater communicates with hot secondary air system.
Also further, the water side outlet of the high-temperature economizer connects external sky in advance respectively by a three-way device
The side-entrance of device water and drum；The water side-entrance connection external air preheater water side outlet of the low-level (stack-gas) economizer, the low temperature save
The water side outlet of coal device connects water side-entrance and the oxygen-eliminating device of high-temperature economizer by another three-way device respectively.
Further, the igniting secondary air channel includes igniting Secondary Air main pipe and igniting Secondary Air branch pipe, the point
One end of fiery Secondary Air main pipe and the air side outlet of external air preheater, the other end are communicated in igniting Secondary Air branch pipe
One end, it is described igniting Secondary Air branch pipe the other end obliquely through lower furnace portion front wall after with inside burner hearth combustion chamber connect
It is logical.
Preferably, the disturbance secondary air channel includes one group of disturbance Secondary Air main pipe and three groups of disturbance Secondary Air branch pipes, institute
One end of one group of disturbance Secondary Air main pipe and the air side outlet of external air preheater are stated, the other end is respectively communicated with three groups
Disturb one end of Secondary Air branch pipe, the other end of three groups of disturbances Secondary Air branch pipe is respectively obliquely through before in the middle part of burner hearth
After wall and both walls with the combustion chamber inside burner hearth.
Preferably, the secondary air channel that burns includes burning Secondary Air main pipe and burns Secondary Air branch pipe, described to burn two
One end of secondary wind main pipe and the air side outlet of external air preheater, the other end, which is communicated in, burns the one of Secondary Air branch pipe
End, the other end for burning Secondary Air branch pipe connect after passing through the front wall of upper furnace obliquely with the combustion chamber inside burner hearth
It is logical.
The beneficial effects of the utility model are：Efficiency of combustion of the fuel in burner hearth can be improved, reduce flying marking
Amount, reduce dust emission；The concentration of nitrogen oxides in effluent is reduced, and by special back-end surfaces heat exchange structure, can
The exhaust gas temperature of boiler is reduced, heat loss due to exhaust gas is reduced and avoids low-temperature corrosion.The utility model is reducing flue gas pollutant row
While putting concentration, it is possible to reduce heat loss due to exhaust gas, heat loss due to unburned gas and the mechanical incomplete combustion of boiler, from
And improve boiler thermal output.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model embodiment.
Wherein：Overfire air fan 1, external air preheater 2, high-temperature economizer 3, low-level (stack-gas) economizer 4, igniting Secondary Air main pipe
5th, light a fire Secondary Air branch pipe 6, disturbance Secondary Air main pipe 7, disturbance Secondary Air branch pipe 8, burn Secondary Air main pipe 9, burn Secondary Air
Branch pipe 10, drum 11, burner hearth 12, vertical gas pass 13.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Such as Fig. 1, environment-friendly high-efficiency biomass Industrial Boiler described in the utility model, including drum 11, burner hearth 12, vertical cigarette
Outside the various structures that the common biomass boiler of grade of road 13 possesses, in addition to the hot secondary air system that Secondary Air is sent into burner hearth 12
With regulation Secondary Air temperature and the external air preheater system of exhaust gas temperature.
External air preheater system includes being used for external air preheater 2, the high-temperature economizer 3 for improving Secondary Air temperature
With low-level (stack-gas) economizer 4, the high-temperature economizer 3 is arranged in the first order of vertical gas pass 13, and the low-level (stack-gas) economizer 4 is arranged in vertical
The second level of straight flue 13.Hot secondary air system includes being arranged on the igniting secondary air channel of the bottom of burner hearth 12, is arranged on burner hearth 12
The disturbance secondary air channel at middle part and be arranged on the bottom of burner hearth 12 burn secondary air channel.
The air side-entrance of external air preheater 2 connects with the outlet conduits of overfire air fan 1, the import of overfire air fan 1 with
Air communicates, and the air side outlet of external air preheater 2 communicates with hot secondary air system.
The water side outlet of high-temperature economizer 3 by a three-way device connect respectively the water side-entrance of external air preheater 2 and
Drum 11；The water side outlet of water side-entrance connection external air preheater 2 of low-level (stack-gas) economizer 4, the water side outlet of low-level (stack-gas) economizer 4
Connect water side-entrance and the oxygen-eliminating device 14 of high-temperature economizer 3 respectively by another three-way device.
Secondary air channel of lighting a fire includes igniting Secondary Air main pipe 5 and Secondary Air branch pipe 6 of lighting a fire, and the one of igniting Secondary Air main pipe 5
End and the air side outlet of external air preheater 2, the other end are communicated in one end of igniting Secondary Air branch pipe 6, and igniting is secondary
The other end of wind branch pipe 6 obliquely through the bottom of burner hearth 12 front wall after with the combustion chamber inside burner hearth 12.
It is secondary including one group of disturbance Secondary Air main pipe 7 and three groups of disturbance Secondary Air branch pipes 8, one group of disturbance to disturb secondary air channel
One end of wind main pipe 7 and the air side outlet of external air preheater 2, the other end are respectively communicated with three groups of disturbance Secondary Air branch
One end of pipe 8, the other ends of three groups of disturbance Secondary Air branch pipes 8 is respectively obliquely through after the front wall at the middle part of burner hearth 12 and both walls
With the combustion chamber inside burner hearth 12.
Burning secondary air channel includes burning Secondary Air main pipe 9 and burns Secondary Air branch pipe 10, burns the one of Secondary Air main pipe 9
End and the air side outlet of external air preheater 2, the other end is communicated in the one end for burning Secondary Air branch pipe 10, described to burn
The other end of Secondary Air branch pipe 10 obliquely through the top of burner hearth 12 front wall after with the combustion chamber inside burner hearth 12.
Hot secondary air system in the utility model, by Secondary Air layered arrangement, makes fuel realize fractional combustion, in stove
Micro- excess air coefficient is kept at thorax flame kernel, reduces flame kernel temperature, suppresses nitrogen oxides production, and upper furnace is mended
Secondary Air is filled, ensures burning for fuel, so as to reduce unburned carbon in flue dust and flying dust concentration.
According to the combustion characteristics of biomass fuel, Secondary Air is divided into igniting Secondary Air again, Secondary Air is disturbed, burns secondary
Wind, respectively by Secondary Air branch pipe 6 of lighting a fire, disturbance Secondary Air branch pipe 8 and burn Secondary Air branch pipe 10 and be delivered in burner hearth.Igniting
Oxygen amount when secondary wind energy supplements a large amount of Volatiles in time needed for burning；Disturb needed for secondary wind energy supplementary furnace chamber inner combustion
Oxygen amount, the disturbance of flue gas, extends residence time of the fuel in stove, improves the efficiency of combustion of burner hearth in and can enhancing burner hearth；
Burn Secondary Air and be in order that the bulky grain for being difficult to burn in burner hearth remains to burn away before burner hearth is left, improve fuel
Burn-off rate.
After boiler feedwater from oxygen-eliminating device 14 enters the smoke exhaust heat of the suction vertical gas pass 13 of high-temperature economizer 3, pass through
One triple valve, enter external air preheater 2 into drum 11, another way all the way.Into the boiler feedwater of external air preheater 2
The Secondary Air of the submitting of overfire air fan 1 is transferred heat to, improves wind-warm syndrome, water temperature continues to suck after reducing into low-level (stack-gas) economizer 4
The smoke exhaust heat of vertical gas pass 13, the final and boiler feedwater from oxygen-eliminating device 14 enter high temperature by another triple valve and save coal
Device 4, circulation work.Said structure can improve boiler feed temperature, reduce exhaust gas temperature again.
External air preheater system in the utility model, first, Secondary Air temperature can be made to bring up to 100 DEG C,
Boiler combustion efficiency can be improved；Secondly, exhaust gas temperature is reduced to 130 DEG C, more than 20 DEG C lower than conventional design, can reduce
Heat loss due to exhaust gas, improve boiler thermal output；Finally, the low-temperature corrosion of heated surface at the end of boiler can be prevented, protects heating surface.Especially
It is winter, avoids the cold wind and flue gas heat exchange of conventional 0 DEG C or so of air preheater, the problem of easily causing back-end surfaces acid corrosion.
Biomass Industrial Boiler of the present utility model, on the one hand, reduce the concentration of emission of flue dust and nitrogen oxides, mitigate
The abrasion of dust removing device for flue gas of boiler and oxide etch degree, improve the service life of deduster；On the other hand, improve
The thermal efficiency of boiler, reduce the usage amount of fuel, reduce the loss of boiler its own mechanical device, extend boiler and use the longevity
Life；So as to reduce boiler over-emitting black exhaust, the problems such as coking, corrosion.
It should be understood that the particular order or level of the step of during disclosed are the examples of illustrative methods.Based on setting
Count preference, it should be appreciated that during the step of particular order or level can be in the feelings for the protection domain for not departing from the disclosure
Rearranged under condition.Appended claim to a method gives the key element of various steps with exemplary order, and not
It is to be limited to described particular order or level.
Claims (9)
1. a kind of environment-friendly high-efficiency biomass Industrial Boiler, including drum (11), burner hearth (12) and vertical gas pass (13), its feature exist
In：Also include the external of hot secondary air system that Secondary Air is sent into burner hearth (12) and regulation Secondary Air temperature and exhaust gas temperature
Regenerative air heater system；
The inside of the burner hearth (12) is connected by hot secondary air system with overfire air fan (1)；
The vertical gas pass (13) is connected by external air preheater system and overfire air fan (1).
2. environment-friendly high-efficiency biomass Industrial Boiler according to claim 1, it is characterised in that：The drum (11) is by outer
Regenerative air heater system is put to connect with oxygen-eliminating device (14).
3. environment-friendly high-efficiency biomass Industrial Boiler according to claim 2, it is characterised in that：The external air preheat
Device system includes being used for the external air preheater (2), high-temperature economizer (3) and low-level (stack-gas) economizer (4) for improving Secondary Air temperature, institute
The first order that high-temperature economizer (3) is arranged in vertical gas pass (13) is stated, the low-level (stack-gas) economizer (4) is arranged in vertical gas pass (13)
The second level.
4. environment-friendly high-efficiency biomass Industrial Boiler according to claim 3, it is characterised in that：The hot secondary air system bag
Include and be arranged on the igniting secondary air channel of burner hearth (12) bottom, the disturbance secondary air channel being arranged in the middle part of burner hearth (12) and be arranged on stove
Thorax (12) bottom burns secondary air channel.
5. environment-friendly high-efficiency biomass Industrial Boiler according to claim 4, it is characterised in that：The external air preheater
(2) air side-entrance connects with the outlet conduits of overfire air fan (1), and the import of the overfire air fan (1) communicates with air, institute
The air side outlet for stating external air preheater (2) communicates with hot secondary air system.
6. environment-friendly high-efficiency biomass Industrial Boiler according to claim 5, it is characterised in that：The high-temperature economizer (3)
Water side outlet external air preheater (2) water side-entrance and drum (11) are connected by a three-way device respectively；The low temperature
Water side-entrance connection external air preheater (2) water side outlet of economizer (4), the water side outlet of the low-level (stack-gas) economizer (4) lead to
Cross water side-entrance and oxygen-eliminating device (14) that another three-way device connects high-temperature economizer (3) respectively.
7. environment-friendly high-efficiency biomass Industrial Boiler according to claim 6, it is characterised in that：The igniting secondary air channel bag
Igniting Secondary Air main pipe (5) and igniting Secondary Air branch pipe (6) are included, one end of the igniting Secondary Air main pipe (5) and external are empty
The air side outlet of pre- device (2), the other end are communicated in one end of igniting Secondary Air branch pipe (6), the igniting Secondary Air branch
The other end of (6) is managed obliquely through combustion chamber internal with burner hearth (12) after the front wall of burner hearth (12) bottom.
8. environment-friendly high-efficiency biomass Industrial Boiler according to claim 7, it is characterised in that：The disturbance secondary air channel bag
Include one group of disturbance Secondary Air main pipe (7) and three groups of disturbance Secondary Air branch pipes (8), the one of one group of disturbance Secondary Air main pipe (7)
End and the air side outlet of external air preheater (2), the other end are respectively communicated with one in three groups of disturbance Secondary Air branch pipes (8)
End, the other end of three groups of disturbance Secondary Airs branch pipe (8) is respectively obliquely through the front wall and both walls in the middle part of burner hearth (12)
The combustion chamber internal with burner hearth (12) afterwards.
9. environment-friendly high-efficiency biomass Industrial Boiler according to claim 8, it is characterised in that：It is described to burn secondary air channel bag
Include and burn Secondary Air main pipe (9) and burn Secondary Air branch pipe (10), described one end for burning Secondary Air main pipe (9) is empty with external
The air side outlet of pre- device (2), the other end is communicated in the one end for burning Secondary Air branch pipe (10), described to burn Secondary Air branch
The other end of (10) is managed obliquely through combustion chamber internal with burner hearth (12) after the front wall on burner hearth (12) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720646398.5U CN207006215U (en) | 2017-06-06 | 2017-06-06 | Environment-friendly high-efficiency biomass Industrial Boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720646398.5U CN207006215U (en) | 2017-06-06 | 2017-06-06 | Environment-friendly high-efficiency biomass Industrial Boiler |
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| Publication Number | Publication Date |
|---|---|
| CN207006215U true CN207006215U (en) | 2018-02-13 |
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| CN201720646398.5U Active CN207006215U (en) | 2017-06-06 | 2017-06-06 | Environment-friendly high-efficiency biomass Industrial Boiler |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542080A (en) * | 2018-05-29 | 2019-12-06 | 中国电力工程顾问集团华北电力设计院有限公司 | Swirl injection device for embedded pipe of directly-upper secondary air furnace of CFB (circulating fluid bed) boiler |
| CN110542080B (en) * | 2018-05-29 | 2024-05-10 | 中国电力工程顾问集团华北电力设计院有限公司 | Built-in pipe rotational flow blowing device in overgrate air furnace directly above CFB boiler |
-
2017
- 2017-06-06 CN CN201720646398.5U patent/CN207006215U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542080A (en) * | 2018-05-29 | 2019-12-06 | 中国电力工程顾问集团华北电力设计院有限公司 | Swirl injection device for embedded pipe of directly-upper secondary air furnace of CFB (circulating fluid bed) boiler |
| CN110542080B (en) * | 2018-05-29 | 2024-05-10 | 中国电力工程顾问集团华北电力设计院有限公司 | Built-in pipe rotational flow blowing device in overgrate air furnace directly above CFB boiler |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230105 Address after: 101400 room 208, second floor, building 13, yard 53, Yanqi street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee after: Beijing Tianhong Jiaxin Energy Technology Co.,Ltd. Address before: 062650 Liu He Zhen Wang Zhen Dian Cun, Qing County, Cangzhou City, Hebei Province Patentee before: QINGXIAN RUITONG ENERGY TECHNOLOGY CO.,LTD. |