CN206929792U - Suitable for the tertiary air blowing system of biomass incinerator thorax - Google Patents
Suitable for the tertiary air blowing system of biomass incinerator thorax Download PDFInfo
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- CN206929792U CN206929792U CN201720797162.1U CN201720797162U CN206929792U CN 206929792 U CN206929792 U CN 206929792U CN 201720797162 U CN201720797162 U CN 201720797162U CN 206929792 U CN206929792 U CN 206929792U
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- burner hearth
- tertiary air
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- blowing system
- air blowing
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Abstract
The utility model provides a kind of tertiary air blowing system suitable for biomass incinerator thorax, including multiple tertiary air jet pipes that wall paper is put after the burner hearth front wall and burner hearth, it is characterized in that, the multiple tertiary air jet pipe is formed by two sets of airducts of thickness, extra heavy pipe and tubule interlaced arrangement, wherein, burner hearth front wall extra heavy pipe corresponds to wall tubule after burner hearth, and burner hearth front wall tubule corresponds to wall extra heavy pipe after burner hearth.According to the utility model, the mixing of tertiary air and fuel gas can be promoted well, while obtain ideal in-furnace temperature distribution.
Description
Technical field
It the utility model is related to biomass and burn field, in particular to a kind of suitable for the three of biomass incinerator thorax
Secondary wind blowing system.
Background technology
The development of China's biomass energy just starts to walk, and market potential is huge, and according to data, China every year can be with for root
The biomass energy of utilization is about 300,000,000 tons, and it is about 200,000,000 tons that the energy that can be provided, which converts into standard coal, if can be complete
Portion reasonably utilizes, it is possible to reduce the consumption of about 10% traditional fossil energy.And up to the present, Biomass Energy Utilization rate compared with
Low, the available resources amount of wherein feces of livestock and poultry is 840,000,000 tons, and utilization rate is 35.7%；Municipal domestic organic refuse
Available resources amount is 75,000,000 tons, and utilization rate is 37.3%；The available resources amount of agricultural crop straw is 340,000,000 tons,
Utilization rate is 2.4%；The available resources amount of forestry Timber residuals is 350,000,000 tons, and utilization rate is 0.9%；Agricultural production
The available resources amount of product industrial wood waste is 60,000,000 tons, and utilization rate is 3.34%.From existing statistics, biology
The also huge development space of the utilization in mass-energy source.
Existing biomass incineration technology is mainly the water-cooling vibration furnace grate stove in the new source in Depew and domestic each boiler factory's design
Circulating fluidized bed incinerator.Circulating fluidized bed incinerator has the characteristics that fluff pulp is low, burn-off rate is high, but high velocity stream
Abrasion of the bed of change to refractory material of pipe laying, stove inwall etc. in stove is more serious, it is necessary to regular blowing out is overhauled, year
Hours of operation is low；Water-cooling vibration furnace grate furnace structure is simple, but bad for fuel tolerance, and carbon content in the bottom ash is higher, and stove
The high temperature corrosion of interior easily occurrence of large-area, is affected greatly to safety and economic operation.
From the point of view of occupation rate of market, for biomass material, the water-cooling vibration furnace grate stove in the new source in Depew occupies exhausted big portion
Divide market, and circulating fluidized bed incinerator is then mainly for biomass compressed granulate.The tertiary air air distribution of water-cooling vibration furnace grate stove
System is relatively simple, is liquidated or the airduct of interlaced arrangement for row's front-back wall arrangement, promotes stove by the disturbance between jet
The burning of interior unburnt gas.
Therefore, it is necessary to a kind of tertiary air blowing system suitable for biomass incinerator thorax, to promote well three times
The mixing of wind and fuel gas.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of tertiary air air distribution suitable for biomass incinerator thorax
System, including multiple tertiary air jet pipes that wall paper is put after the burner hearth front wall and burner hearth, it is characterised in that the multiple
Tertiary air jet pipe is formed by two sets of airducts of thickness, extra heavy pipe and tubule interlaced arrangement, wherein, after burner hearth front wall extra heavy pipe corresponds to burner hearth
Wall tubule, burner hearth front wall tubule correspond to wall extra heavy pipe after burner hearth.
In one example, the high-temperature region of the burner hearth forms waveform distribution on tertiary air section.
In one example, wall paper is equipped with behind the lower section of the multiple tertiary air jet pipe, the burner hearth front wall and burner hearth
Multiple Secondary Air jet pipes.
In one example, the multiple Secondary Air jet pipe interlaced arrangement.
In one example, in the top of the multiple tertiary air jet pipe, exhaust outlet is provided with, is arranged by the exhaust outlet
The gas gone out is sent into system for cleaning fume and handled.
In one example, it is the system for cleaning fume includes implementing successively SNCR denitration, semidry method depickling, dry
Method depickling cooling, charcoal absorption, bag-type dust, steam heating, low temperature SCR denitration, flue gas heat exchange, wet method depickling and flue gas take off
Except white haze.
According to the utility model, the mixing of tertiary air and fuel gas can be promoted well, while obtain ideal
In-furnace temperature distribution.
Brief description of the drawings
Drawings below of the present utility model is used to understand the utility model in this as a part of the present utility model.Accompanying drawing
In show embodiment of the present utility model and its description, for explaining principle of the present utility model.
In accompanying drawing：
Fig. 1 is the schematic diagram according to the tertiary air blowing system of the utility model exemplary embodiment.
Embodiment
In the following description, a large amount of concrete details are given more thoroughly to manage the utility model to provide
Solution.It is, however, obvious to a person skilled in the art that the utility model can be without one or more of these thin
Save and be carried out.In other examples, in order to avoid obscuring with the utility model, for more well known in the art
Technical characteristic is not described.
In order to thoroughly understand the utility model, detailed method and step and/or structure will be proposed in following description.It is aobvious
So, execution of the present utility model is not limited to specific details appreciated by those skilled in the art.It is of the present utility model compared with
Good embodiment is described in detail as follows, but in addition to these detailed descriptions, the utility model can also have other embodiment.
It should be appreciated that the utility model can be implemented in different forms, and should not be construed as being limited to carry here
The embodiment gone out.On the contrary, providing these embodiments disclosure will be made thoroughly and complete and the scope of the utility model is complete
Ground passes to those skilled in the art.In the accompanying drawings, for clarity, the size and relative size in Ceng He areas may be exaggerated.
Same reference numerals represent identical element from beginning to end.
It should be appreciated that when using term "comprising" and/or " comprising " in this manual, it is indicated described in presence
Feature, entirety, step, operation, element and/or component, but do not preclude the presence or addition of other one or more features, entirety,
Step, operation, element, component and/or combinations thereof." one " of singulative, "one" and " described/should " be also intended to include
Plural form, unless context is expressly noted that other mode.
Existing biomass incineration technology is mainly the water-cooling vibration furnace grate stove in the new source in Depew and domestic each boiler factory's design
Circulating fluidized bed incinerator.Circulating fluidized bed incinerator has the characteristics that fluff pulp is low, burn-off rate is high, but high velocity stream
Abrasion of the bed of change to refractory material of pipe laying, stove inwall etc. in stove is more serious, it is necessary to regular blowing out is overhauled, year
Hours of operation is low；Water-cooling vibration furnace grate furnace structure is simple, but bad for fuel tolerance, and carbon content in the bottom ash is higher, and stove
The high temperature corrosion of interior easily occurrence of large-area, is affected greatly to safety and economic operation.
From the point of view of occupation rate of market, for biomass material, the water-cooling vibration furnace grate stove in the new source in Depew occupies exhausted big portion
Divide market, and circulating fluidized bed incinerator is then mainly for biomass compressed granulate.The tertiary air air distribution of water-cooling vibration furnace grate stove
System is relatively simple, is liquidated or the airduct of interlaced arrangement for row's front-back wall arrangement, promotes stove by the disturbance between jet
The burning of interior unburnt gas.
Biomass burner hearth is general more roomy.If tertiary air flow velocity is excessive, will cause inner flue gas of the stove flow field degree of filling compared with
Difference, flowing is chaotic, and high-temperature region wall will arbitrarily swing after burner hearth front wall, and cause violent scour to burner hearth front-back wall, influence boiler
Service life；If tertiary air flow velocity is smaller, although between high-temperature region being fixed on into front-back wall, not directly to burner hearth before and after
Wall causes violent scour, but the mixing of now tertiary air and unburnt gas in stove is poor, reduces boiler efficiency, is unfavorable for pot
The economy operation of stove.
In order to solve the above-mentioned technical problem, the utility model devises a kind of tertiary air suitable for biomass incinerator thorax
Blowing system, the mixing of tertiary air and fuel gas can be promoted well, while obtain ideal in-furnace temperature distribution.
[exemplary embodiment]
Reference picture 1, it illustrates the schematic diagram of the tertiary air blowing system according to the utility model exemplary embodiment.
Biomass material enters burner hearth through feeding system by the charging aperture positioned at the bottom side of biomass incinerator 1, accumulation
In the stockpiling area of lower furnace portion, gasified by the First air sent constantly into from burner hearth bottom.It is former according to uniflow gas stove
Reason, the bed of material for being deposited in stockpiling area are divided into drying layer, gasification layer, reducing zone, oxide layer, ash bed totally five part from top to bottom.
The bottom of stockpiling area is equipped with some thermocouples, for detecting the Temperature Distribution of ash bed.In the top of stockpiling area, respectively at burner hearth
Wall paper puts multiple Secondary Air jet pipes 2 after front wall and burner hearth, for fill into oxygen carry out gasification product particularly the burning of tar with
After-flame, it is preferable that the interlaced arrangement of Secondary Air jet pipe 2 of wall positioned at the Secondary Air jet pipe 2 of burner hearth front wall and after burner hearth.Fully
Gasification gas after burning is after pendant superheater 4 fully heat exchange from the exhaust outlet discharge positioned at the top of biomass incinerator 1.
The bottom of stockpiling area is equipped with some thermocouples, for detecting the temperature of ash bed, is set when the temperature of ash bed is less than
When constant temperature is spent (such as 100), the screw rod setting in motion deslagging positioned at stockpiling area bottom, lime-ash is another from gasification burning all-in-one oven bottom
The slag-drip opening discharge of side；Meanwhile feeding system continues to be fed toward in stove, this feed-type energy with deslagging temperature feedback
It is complete enough to ensure that the gasification in stove is carried out, substantially reduces the phosphorus content of bottom ash.
In the top of Secondary Air jet pipe 2, wall paper puts multiple tertiary air jet pipes 3 after burner hearth front wall and burner hearth.It is different
In traditional air distribution mode, as shown in Section A-A and section B-B in Fig. 1, the tertiary air jet pipe that is arranged on burner hearth front-back wall
3 are formed by two sets of airducts of thickness, two-by-two interlaced arrangement, wherein, burner hearth front wall extra heavy pipe corresponds to wall tubule after burner hearth, burner hearth front wall
Tubule corresponds to wall extra heavy pipe after burner hearth.
When incinerator is run, in the presence of blower fan three times, tertiary air is sent into by the different tertiary air jet pipe 3 of thickness to be burnt
Burn stove burner hearth.Because the tertiary air momentum of extra heavy pipe will be significantly greater than tubule, therefore the high-temperature region of burner hearth will on tertiary air section
Waveform distribution is formed, and because tertiary air jet pipe 3 is burner hearth front and back wall cross collocation, strong disturbance will be further uniform
Tertiary air is sent into the temperature of section, avoids the occurrence of the situation that high-temperature flue gas washes away wall after burner hearth front wall or burner hearth.
Simultaneously as the arrangement that thickness is relative, flue gas will add alternately toward wall deflection after burner hearth front wall and burner hearth
Degree of filling in stove, violent tertiary air liquidates so that tertiary air forms good mixing with unburnt gas in stove, so as to promote
The burning after-flame of unburnt gas in stove, improve the efficiency of boiler.
The utility model has advantages below：
1st, the tertiary air jet pipe of thickness interlaced arrangement, from suitable tertiary air match somebody with somebody wind velocity, tertiary air can be dispensed
The stagnation region Pitching in section, inner flue gas of the stove degree of filling is improved, and high-temperature region had both been not biased towards burner hearth front wall, be also not biased towards stove
Wall after thorax；
2nd, the tertiary air jet pipe arrangement that liquidates can preferably promote the mixing of fuel gas and tertiary air, reduce burner hearth chemistry
Incomplete combustion loss.
From being carried out from the gas feeding system for cleaning fume discharged positioned at the exhaust outlet on the top of biomass incinerator 1
Reason, exemplarily, the system for cleaning fume include SNCR denitration, semidry method depickling, the dry-process deacidification drop implemented successively
Temperature, charcoal absorption, bag-type dust, steam heating, low temperature SCR denitration, flue gas heat exchange, wet method depickling and flue gas removing white haze,
The SNCR denitration is carried out in SNCR devices, and the semidry method depickling is carried out in semidry method reaction tower, the dry-process deacidification
Cooling is carried out in dry-process deacidification tower, and the charcoal absorption and the bag-type dust are carried out in sack cleaner, the steaming
Vapour heating is carried out in the steam heater being arranged between sack cleaner and the low-temperature SCR device, and the low-temperature SCR takes off
Nitre is carried out in the low-temperature SCR device, and the flue gas heat exchange is being arranged between the low-temperature SCR device and wet scrubbing tower
Flue gas/flue gas heat-exchange unit in carry out, the wet method depickling carries out in the wet scrubbing tower, and the flue gas removing white haze exists
Carried out in another steam heater.
The utility model is illustrated by above-described embodiment, but it is to be understood that, above-described embodiment is
For the purpose illustrated and illustrated, and it is not intended to the utility model being limited in described scope of embodiments.In addition ability
Field technique personnel are it is understood that the utility model is not limited to above-described embodiment, according to teaching of the present utility model also
More kinds of variants and modifications can be made, these variants and modifications all fall within the utility model scope claimed with
It is interior.The scope of protection of the utility model is defined by the appended claims and its equivalent scope.
Claims (6)
1. a kind of tertiary air blowing system suitable for biomass incinerator thorax, including after the burner hearth front wall and burner hearth
Multiple tertiary air jet pipes that wall paper is put, it is characterised in that the multiple tertiary air jet pipe is formed by two sets of airducts of thickness, extra heavy pipe
With tubule interlaced arrangement, wherein, burner hearth front wall extra heavy pipe corresponds to wall tubule after burner hearth, and wall is thick after burner hearth front wall tubule corresponds to burner hearth
Pipe.
2. tertiary air blowing system according to claim 1, it is characterised in that break in tertiary air the high-temperature region of the burner hearth
Waveform distribution is formed on face.
3. tertiary air blowing system according to claim 1, it is characterised in that under the multiple tertiary air jet pipe
Square, wall paper is equipped with multiple Secondary Air jet pipes after the burner hearth front wall and burner hearth.
4. tertiary air blowing system according to claim 3, it is characterised in that the multiple Secondary Air jet pipe interlocks cloth
Put.
5. tertiary air blowing system according to claim 1, it is characterised in that in the upper of the multiple tertiary air jet pipe
Side, is provided with exhaust outlet, and the gas discharged by the exhaust outlet is sent into system for cleaning fume and handled.
6. tertiary air blowing system according to claim 5, it is characterised in that the system for cleaning fume include according to
The SNCR denitration of secondary implementation, semidry method depickling, dry-process deacidification cooling, charcoal absorption, bag-type dust, steam heating, low-temperature SCR
Denitration, flue gas heat exchange, wet method depickling and flue gas removing white haze.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720797162.1U CN206929792U (en) | 2017-07-03 | 2017-07-03 | Suitable for the tertiary air blowing system of biomass incinerator thorax |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720797162.1U CN206929792U (en) | 2017-07-03 | 2017-07-03 | Suitable for the tertiary air blowing system of biomass incinerator thorax |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206929792U true CN206929792U (en) | 2018-01-26 |
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ID=61353086
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720797162.1U Active CN206929792U (en) | 2017-07-03 | 2017-07-03 | Suitable for the tertiary air blowing system of biomass incinerator thorax |
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| Country | Link |
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| CN (1) | CN206929792U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564429A (en) * | 2019-08-14 | 2019-12-13 | 光大环保技术研究院（南京）有限公司 | System and method for preparing activated carbon tail gas coupled biomass direct-fired denitration |
| CN110616076A (en) * | 2019-08-14 | 2019-12-27 | 光大环保技术研究院（南京）有限公司 | System and method for preparing activated carbon pyrolysis gas coupled biomass direct-fired denitration |
-
2017
- 2017-07-03 CN CN201720797162.1U patent/CN206929792U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564429A (en) * | 2019-08-14 | 2019-12-13 | 光大环保技术研究院（南京）有限公司 | System and method for preparing activated carbon tail gas coupled biomass direct-fired denitration |
| CN110616076A (en) * | 2019-08-14 | 2019-12-27 | 光大环保技术研究院（南京）有限公司 | System and method for preparing activated carbon pyrolysis gas coupled biomass direct-fired denitration |
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