CN110360545A - Horizontal pulverized-coal fired boiler - Google Patents
Horizontal pulverized-coal fired boiler Download PDFInfo
- Publication number
- CN110360545A CN110360545A CN201910600425.9A CN201910600425A CN110360545A CN 110360545 A CN110360545 A CN 110360545A CN 201910600425 A CN201910600425 A CN 201910600425A CN 110360545 A CN110360545 A CN 110360545A
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- Prior art keywords
- fired boiler
- coal fired
- coal
- pulverized
- burner hearth
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- 239000003245 coal Substances 0.000 title claims abstract description 90
- 238000002485 combustion reaction Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 6
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 239000000843 powder Substances 0.000 description 19
- 239000003546 flue gas Substances 0.000 description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 13
- 239000002817 coal dust Substances 0.000 description 11
- 239000002956 ash Substances 0.000 description 10
- 239000000428 dust Substances 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013517 stratification Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000010883 coal ash Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001535 kindling effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/08—Disposition of burners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C7/00—Combustion apparatus characterised by arrangements for air supply
-
- 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
- F23J15/006—Layout of treatment plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C2700/00—Special arrangements for combustion apparatus using fluent fuel
- F23C2700/06—Combustion apparatus using pulverized fuel
- F23C2700/063—Arrangements for igniting, flame-guiding, air supply in
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Combustion Of Fluid Fuel (AREA)
Abstract
The embodiment of the invention provides a kind of horizontal pulverized-coal fired boilers, the horizontal pulverized-coal fired boiler includes burner hearth and the shell on the outside of burner hearth, it is equipped with the threaded flue with first stroke and second stroke in shell, SCR denitration device is equipped between first stroke and second stroke.The out of stock device of SCR can be rationally arranged in the horizontal pulverized-coal fired boiler of the embodiment of the present invention, be conducive to environmental protection.
Description
Technical field
The present invention relates to boiler technology fields, more particularly to a kind of horizontal pulverized-coal fired boiler.
Background technique
The characteristics of China's energy resources is rich coal, oil starvation, few gas.It means that coal is when considerably long at present and in the future
It all will be the leading of China's energy resource structure in phase.However the status of Coal Combustion in China Industrial Boiler allows of no optimist.
First is that seriously polluted.Data show, 2010, Chinese industrial boiler fired coal discharge about 10,000,000 tons of sulfur dioxide,
About 2,000,000 tons of oxynitrides, about 1,000,000 tons of dust, about 90,000,000 tons of waste residue, be that China is only second to the second of coal fired power generation
Big coal-smoke pollution source.However, in Chinese industrial boiler, sum and total capacity 85% the above are coal-burned industrial boilers.
Second is that efficiency low SI.According to statistics, the design efficiency of coal-burned industrial boiler is generally 72%~80%, reality
60%~65%, 15~20 percentage points are differed with world level mostly for operating thermal efficiency.
Third is that automatization level is low.For most of coal-burning boiler still by worker's manual operations, severe operational environment is practical
Operational efficiency is poor.
According to planning, by 2015, national ten thousand yuan of GDP energy consumptions would fall to 0.869 ton of standard coal and (press
Calculate within 2005), 1.034 tons of standard coals decline 16% than 2010,1.276 tons of standard coals decline 32% than 2005.
If the thermal efficiency of Industrial Boiler is whole to be increased to 80% by 65%, 1.3 hundred million tons or more of fire coal can be saved every year.
Energy Research Institute, National Development and Reform Committee chief Han Wenke indicates that " Chinese joint Business ", industry boiler energy-conservation has a high potential.
Under the background of the above market status, the energy saving of new coal powder Industrial Boiler is just highlighted.The Department of Science and Technology 863
Planning advanced energy technology field expert Du Minghua indicates that pulverized coal particle is uniform, suspends in air to " Chinese joint Business "
Burning, compared with layer combustion, combustion air proportion is low, and burn-off rate is higher, and flue gas emission heat loss is small；Industrial coal powder boiler
Using total closed type powder feeding, air-supply and ash discharge technology, thermal insulation property is good, greatly reduces because of hot-air and smoke spillage production
Raw heat loss is conducive to the thermal efficiency for improving boiler；Traditional industry boiler (such as chain-grate boiler) uses under discontinuous load
It is slow to burn stewing furnace operation, waste of fuel is caused, industrial coal powder boiler, which can be realized to open, to stop, and reduces waste of fuel when stewing furnace.
Relevant department, China take the lead establishment corresponding guidance list in, " accurate powder supply, rapid-ignition surely fire, the combustion of low nitrogen
It burns, integrate grey calcium flue gas desulfurization, overall process interlock protection certainly without dust stratification cleaning pressure-bearing burner hearth, efficient low-resistance bag-type dusting, joint
Dynamic control distributed high-efficiency pulverized coal combustion technology and equipment " is put into the largest industrial sector of seven big industries, and " energy conservation and environmental protection produces
The energy-efficient energy-saving efficient boiler kiln of industry " occurs and is described in detail in significant position.
Traditional pulverized-coal fired boiler, it is most of to be only used in power plant since the various aspects such as burner, environmental protection limit, greatly
Type chemical company.Pulverized-coal fired boiler has coal dust centralizedly supply；Working environment is relatively preferable；Boiler start-stop is simple；Observing and controlling level compared with
It is high；It is energy-efficient, the features such as saving the area.But relative to the boiler of other forms, the high efficiency of pulverized-coal fired boiler also brings phase
The high pollution problem answered, the miniaturization of burner are also the factor of limitation pulverized-coal fired boiler miniaturization, therefore in the past few decades
In, pulverized-coal fired boiler is not always all by popularization energetically.
Now, increasingly maturation, the technology of burner of environmental protection equipment are also developing in boiler industry, and coal dust powder is realized
The appearance of the theories such as the outside the city powder of " burn coal and lose coal ", the popularization of high-efficiency pulverized coal boiler have also welcome emerging development.Simultaneously
It is also challenge for traditional high-efficiency pulverized coal boiler, the market competition of high-efficiency pulverized coal boiler is also further fierce.
Coal-powder boiler refers to the outstanding burner using coal dust as fuel.Its burner hearth is the large space surrounded with water-cooling wall furnace wall, mill
Broken coal dust and air sprays into hearth combustion after burner mixes.Preparation stage, burning before the burning point kindling of coal dust
Stage and after-flame stage.Corresponding, burner hearth can also be divided into three regions: ignition zone, combustion zone, burning-out zone.If this
Three regions are on the same horizontal absolute altitude, traditionally referred to as horizontal pulverized-coal fired boiler.
The applicable coal of pulverized-coal fired boiler is more, needs to be equipped with coal-grinding equipment and corresponding dust-extraction unit, the tissue of combustion conditions
More complicated, the factor for influencing combustion stability is more.The flying dust amount of coal-powder boiler is up to 80-90%, need to be equipped with high-effective dust-removing
Device.
High-efficiency pulverized coal boiler refers to the novel coal-fired boiler with " pulverized coal combustion " for core.It is thin to be ground to 200 mesh
Impurity sufficiently removes the coal dust of degree during the grinding process；Coal-fired fine size, is easily lighted, and volatilization score value is high, and after-flame can be improved
Rate；Coal-fired ash content is low, can reduce load of dust remove.Matched desulfurization, out of stock, the processed flue gas of cleaner meet country
Environmental protection standard.
Traditional horizontal efficient industrial coal powder mainly has D type arrangement and WNS type to arrange two kinds, but two kinds of coal dust pots at present
Furnace can not arrange SCR denitration device.
Summary of the invention
The present invention provides a kind of horizontal pulverized-coal fired boiler, and SCR denitration device can not be arranged by being able to solve boiler in the prior art
The problem of.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of horizontal pulverized-coal fired boiler is provided,
Horizontal pulverized-coal fired boiler includes burner hearth and the shell on the outside of burner hearth, is equipped in shell with first stroke and second stroke
Threaded flue is equipped with SCR denitrification apparatus between first stroke and second stroke.
Wherein, horizontal pulverized-coal fired boiler further includes burner, and burner is connect with burner hearth, and burner is to include direct current and rotation
The mixed-flow burner of stream.
Wherein, mixed-flow burner has four-stage grading air distribution, and four-stage grading air distribution includes three-level pencil eddy flow and level-one
Direct jet.
Wherein, burner hearth uses four sides fin panel casing, and the top of burner hearth is combustion chamber, and the lower part of burner hearth sets that there are three simultaneously
The dry bottom hopper for being used to cool down lime-ash of row's setting.
Wherein, slag notch and cleanout door are equipped with below each dry bottom hopper.
Wherein, cleanout door is connected with mechanical dragveyer.
Wherein, horizontal pulverized-coal fired boiler further includes reversal chamber, the side connection of reversal chamber and combustion chamber.
Wherein, reversal chamber has 90 degree of steerings.
Wherein, horizontal pulverized-coal fired boiler further includes drum, and drum is set between burner hearth and shell.
Wherein, drum is one, and drum is connected by the lower header of the down-comer and burner hearth that are set to drum lower part.
Horizontal pulverized-coal fired boiler provided in an embodiment of the present invention has first stroke and second stroke by being arranged in shell
Threaded flue, and the out of stock device of SCR is set between first stroke and second stroke, compared to the prior art, the present invention is real
The out of stock device of SCR can be rationally arranged in the horizontal pulverized-coal fired boiler for applying example, be conducive to environmental protection.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, required in being described below to embodiment
The attached drawing used is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings, in which:
Fig. 1 is the schematic view of the front view of horizontal one embodiment of pulverized-coal fired boiler of the present invention；
Fig. 2 is the overlooking structure diagram of horizontal pulverized-coal fired boiler shown in FIG. 1；
Fig. 3 is the side structure schematic view of horizontal pulverized-coal fired boiler shown in FIG. 1.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, belongs to the scope of protection of the invention.
Fig. 1-Fig. 3 is please referred to, Fig. 1 is the schematic view of the front view of horizontal one embodiment of pulverized-coal fired boiler of the present invention, figure
2 be the overlooking structure diagram of horizontal pulverized-coal fired boiler shown in FIG. 1, and Fig. 3 is the side view knot of horizontal pulverized-coal fired boiler shown in FIG. 1
Structure schematic diagram.In the present embodiment, horizontal pulverized-coal fired boiler includes burner 10, burner hearth 20, reversal chamber 30, drum 40, shell 50
And SCR denitration device 60.
The burner 10 of the present embodiment is the mixed-flow burner 10 comprising direct current and eddy flow, and mixed-flow burner 10 has
There is four-stage grading air distribution, four-stage grading air distribution includes three-level pencil eddy flow and level-one direct jet.The mixed-flow burner 10
Outstanding feature is that pulverized coal flame is short, and flame burnout is completed in shorter distance.So boiler furnace 20 can be opposite
Arrangement is shorter, and boiler occupied area reduces, and the steel material that boiler expends is few, reduces the manufacturing cost of boiler.
Burner hearth 20 is connect with burner 10, using four sides fin panel casing.The top of burner hearth 20 is combustion chamber 21, burner hearth
20 lower part is set there are three being arranged side by side for cooling down the dry bottom hopper 22 of lime-ash, and combustion chamber 21 is generally rectangular shaped, and coal dust is firing
Burning in room 21 is burnt, and generates high-temperature flue gas.Dry bottom hopper 22 is the bucket-shaped of cold-water wall formation, and in the present embodiment, bucket-shaped is cold
The inclination angle of ash bucket 22 is preferably 35 °.It certainly in other embodiments, can also be 40 ° or 50 °, the present invention does not limit this
It is fixed.Due to the dry bottom hopper 22 being obliquely installed, the coal ash for generation of burning can be discharged along dry bottom hopper 22, will not be formed in burner hearth 20
Dust stratification.
Preferably, it is equipped with slag notch and cleanout door below each dry bottom hopper 22, and cleanout door is also connected with machinery
The coal ash of dragveyer 23, generation of burning is discharged by slag notch and cleanout door, is further uniformly pulled out by mechanical dragveyer 23,
To mitigate the labor intensity that the ash disposal of operation worker is slagged tap.
Reversal chamber 30 is connect with the side of combustion chamber 21, for turning to flue gas after cooling.In the present embodiment
In, reversal chamber 30 has 90 degree of steerings.
Drum 40 is set between burner hearth 20 and shell 50, and in the present embodiment, drum 40 is one.Drum 40 is by setting
Down-comer in 40 lower part of drum is connect with the lower header of burner hearth 20.
Preferably, horizontal pulverized-coal fired boiler may also include air preheater, air-introduced machine and chimney.Air and high-temperature flue gas exist
The threaded flue that heat exchange, air-introduced machine and chimney and second stroke can be formed in air preheater connects, for will be after denitration
Flue gas is drawn, and is discharged by chimney.
Shell 50 is set to 20 outside of burner hearth, is equipped with the threaded flue with first stroke and second stroke in shell 50, and
And SCR denitration device 60 is equipped between the first stroke and second stroke.
The primary structure of horizontal pulverized-coal fired boiler is described above, 1-3 illustrates the horizontal pulverized-coal fired boiler with reference to the accompanying drawing
The course of work.
Boiler total blast volume is divided into First air and Secondary Air, and First air pulverized coal conveying enters coal burner 10, and Secondary Air is logical
It crosses air preheater (if there is) and enters coal burner 10, mixing is rotated in burner 10, organize coal powder ignition, be blown into
Burner hearth 20.Flue gas is moved backward along 20 centerline direction level of burner hearth, and burn away heat release.Cooling through 20 water-cooling wall of burner hearth
Flue gas enters reversal chamber 30, after turning to 180 °, into shell 50 (first stroke), subsequently into SCR denitration device 60, denitration
Flue gas afterwards enters shell 50 (second stroke), finally enters air preheater (if there is), is discharged into chimney through air-introduced machine.
Horizontal pulverized-coal fired boiler of the invention has the advantage that
1, using efficient low nitrogen coal burner: the burner is with bias combustion, four-stage grading air distribution (three-level beam
Shape eddy flow+level-one direct jet), the efficiently low nitrogen coal burner of mixed-flow that has of eddy flow and direct current, outstanding feature is coal
Powder flame is short, and flame burnout is completed in shorter distance.So boiler furnace can be positioned opposite shorter, boiler is accounted for
Ground area reduces, and the steel material that boiler expends is few, reduces the manufacturing cost of boiler.
2, burner hearth uses dry bottom hopper structure, and facilitate deashing ash disposal: burner hearth is made of four sides membrane wall, left and right sides wall film
Formula water-cooling wall lower part slopes inwardly 35 °, forms dry bottom hopper structure, this is the common mature typical structure of generating plant pulverized coal boiler,
Flying dust fall in above can only natural downslide will not accumulate.According to burner hearth length, several rectangular ash dropping hoppers are ultimately formed, ash is fallen
Struggle against lower disposed slag notch, cleanout door and mechanical dragveyer, mitigates the labor intensity that the ash disposal of operation worker is slagged tap.
3, convection heating surface uses threaded flue: the flying dust in convection heating surface, temperature fall below 950 DEG C hereinafter,
In a molten state unlike the flying dust in burner hearth to be easy to be bonded on heating surface, mainly sedimentation lodges in somewhere.Using
Threaded flue is as convection heating surface, flue gas parallel baffled threaded flue, due to from the effect of deashing so that flying dust can not sink
Product, also just solves the problems, such as convection heating surface dust stratification, and threaded flue structure is not leaked out, and boiler efficiency is improved.
4, facilitate arrangement SCR: the horizontal efficient industrial coal powder boiler threaded flue of low capacity is divided to two strokes up and down, greatly
The boiler of capacity walks two stroke of flue gas with two groups of threaded flues respectively.Between two stroke flue gases, increase connection flue, SCR energy
Very easily arrange wherein solve the problems, such as the denitration of horizontal efficient industrial coal powder boiler.
5, it burns coal and loses coal, boiler room surrounding enviroment are good: due to using outside the city centralized system powder, being transported powder with coal dust tank car
It to stokehold, is stored in powder cabin, the closed operation of overall process, No leakage greatly improves the environment on boiler room periphery.
6, coal quality is stablized, and boiler operatiopn stability is good: a reason of traditional coal-burned industrial boiler inefficiency is exactly to fire
Coal source is unstable, and boiler cannot be adjusted in time caused by the parameters such as air quantity by coal quality situation.Efficient industrial coal powder boiler uses
Centralized system powder, coal quality steady sources, boiler can guarantee to run steadily in the long term.
7, boiler efficiency is high: since coal quality is stablized, coal dust firing is stablized sufficiently, and boiler efficiency is fired up to 92% than tradition
Coal burning boiler economizes on coal 30% -50%；
8, energy saving: frequency converter to be equipped with to the biggish electrical equipment of power, power savings are obvious.
9, easy to operate, automatic control level is high: system, which can be realized to open, stops, and cutting incendiary source enters normal operation within 30 seconds；
Blowing out can be realized in cutting coal dust supply.System monitors automatically, adjusts operating parameter, and system is made to be in optimal operational condition；Together
When reduce the interference of labor intensity and human factor to boiler operatiopn.
10, environment protection emission is qualified: coal burner is designed using low nitrogen burning, and uniform temperature fields avoid localized hyperthermia from firing
It burns and generates a large amount of NOx；Flue gas is discharged pollutants using colleges and universities' deduster, atmosphere such as desulfurizer and bag filters
It is low to put concentration, meets environmental requirements；For flyash through centralized collection to grey slag ladle, closed system discharge is without secondary pollution.
11, save the area: without heap coal yard and cinder field, occupied area is small for boiler room.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field is included within the scope of the present invention.
Claims (10)
1. a kind of horizontal pulverized-coal fired boiler, which is characterized in that the horizontal pulverized-coal fired boiler includes burner hearth and is set on the outside of the burner hearth
Shell, the threaded flue with first stroke and second stroke is equipped in the shell, in the first stroke and described the
SCR denitration device is equipped between two strokes.
2. horizontal pulverized-coal fired boiler according to claim 1, which is characterized in that the horizontal pulverized-coal fired boiler further includes burning
Device, the burner are connect with the burner hearth, and the burner is the mixed-flow burner comprising direct current and eddy flow.
3. horizontal pulverized-coal fired boiler according to claim 2, which is characterized in that the mixed-flow burner has four-stage grading
Air distribution, the four-stage grading air distribution include three-level pencil eddy flow and level-one direct jet.
4. horizontal pulverized-coal fired boiler according to claim 1, which is characterized in that the burner hearth uses four sides fin panel casing,
The top of the burner hearth is combustion chamber, and the lower part of the burner hearth sets that there are three be arranged side by side for cooling down the dry bottom hopper of lime-ash.
5. horizontal pulverized-coal fired boiler according to claim 4, which is characterized in that be equipped with and slag tap below each dry bottom hopper
Mouth and cleanout door.
6. horizontal pulverized-coal fired boiler according to claim 5, which is characterized in that the cleanout door is connected with mechanical dragveyer.
7. horizontal pulverized-coal fired boiler according to claim 4, which is characterized in that the horizontal pulverized-coal fired boiler further includes turning to
Room, the reversal chamber are connect with the side of the combustion chamber.
8. horizontal pulverized-coal fired boiler according to claim 7, which is characterized in that the reversal chamber has 90 degree of steerings.
9. horizontal pulverized-coal fired boiler according to claim 8, which is characterized in that the horizontal pulverized-coal fired boiler further includes drum,
The drum is set between the burner hearth and the shell.
10. horizontal pulverized-coal fired boiler according to claim 9, which is characterized in that the drum is one, and the drum passes through
Down-comer set on the drum lower part is connect with the lower header of the burner hearth.
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| CN201910600425.9A CN110360545A (en) | 2019-07-04 | 2019-07-04 | Horizontal pulverized-coal fired boiler |
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| CN201910600425.9A CN110360545A (en) | 2019-07-04 | 2019-07-04 | Horizontal pulverized-coal fired boiler |
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| CN110360545A true CN110360545A (en) | 2019-10-22 |
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| CN201910600425.9A Pending CN110360545A (en) | 2019-07-04 | 2019-07-04 | Horizontal pulverized-coal fired boiler |
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| CN210373404U (en) * | 2019-07-04 | 2020-04-21 | 北控清洁热力有限公司 | Horizontal pulverized coal fired boiler |
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| CN101598324A (en) * | 2009-07-23 | 2009-12-09 | 上海四方锅炉厂 | Adopt the corner tube boiler of uniform scouring convection bank |
| CN203364099U (en) * | 2013-05-29 | 2013-12-25 | 山东华源锅炉有限公司 | O-shaped combustion chamber and shell smoke tube drum combination horizontal type pulverized coal boiler |
| CN104501141A (en) * | 2014-12-24 | 2015-04-08 | 山西蓝天环保设备有限公司 | U-shaped coal-powder boiler with smoke recirculating passage |
| CN205403139U (en) * | 2016-03-14 | 2016-07-27 | 天津宝成机械制造股份有限公司 | Low nitrogen buggy boiler |
| CN207132317U (en) * | 2017-03-30 | 2018-03-23 | 江联重工集团股份有限公司 | A kind of biomass boiler of the multiple independent circulation circuit evaporating heating surfaces of band |
| CN208998063U (en) * | 2018-09-18 | 2019-06-18 | 哈尔滨锅炉厂有限责任公司 | A kind of novel 300MW Supercritical CFB Boiler |
| CN210373404U (en) * | 2019-07-04 | 2020-04-21 | 北控清洁热力有限公司 | Horizontal pulverized coal fired boiler |
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