CN108339656A - A kind of coal-burning boiler pulverized coal preparation system and its dynamic separator - Google Patents
A kind of coal-burning boiler pulverized coal preparation system and its dynamic separator Download PDFInfo
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- CN108339656A CN108339656A CN201810154899.0A CN201810154899A CN108339656A CN 108339656 A CN108339656 A CN 108339656A CN 201810154899 A CN201810154899 A CN 201810154899A CN 108339656 A CN108339656 A CN 108339656A
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- China
- Prior art keywords
- dynamic separator
- circle body
- coal
- dynamic
- blade
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/30—Passing gas through crushing or disintegrating zone the applied gas acting to effect material separation
Abstract
The present invention provides a kind of coal-burning boiler pulverized coal preparation system and its dynamic separators, the tube cell for pulverized coal conveying is connected on dynamic separator ontology (3), the intersection of the dynamic separator ontology (3) and the tube cell is provided with equal powder component (4), the equal powder component (4) includes the circle body of annular and multiple blades for being arranged on the inner wall of the circle body, multiple blades are uniformly distributed around the center of the circle body, and are formed with wind passage between two adjacent blades；The circle body surrounds the meal outlet of the dynamic separator ontology (3), and is fixedly connected with the edge of the meal outlet.Dynamic separator provided by the invention can be effectively improved the coal powder distribation harmony and wind powder uniformity of each tube cell, to improve boiler combustion efficiency, ensure the steady combustion of safety.
Description
Technical field
The present invention relates to pulverized coal preparation technical fields, more particularly to a kind of coal-burning boiler pulverized coal preparation system and its Dynamic Separation
Device.
Background technology
Currently, as coal price goes up, the existing coal calorific value of boiler is substantially less than design coal, Coal-fired capacity substantially on
It rises, pulverizer capacity becomes the bottleneck for influencing unit.In addition, due to coal diversity, fineness of pulverized coal is difficult to real-time control and adjusts
Whole, fly ash combustible material is higher.Former baffle-type static separation device has been difficult to meet requirement of the power plant to fineness of pulverized coal adjustable range,
And dynamic separator can improve fineness of pulverized coal by adjusting wheel speed, market prospects can the phase.
Separator for coal mill is the key equipment in coal-burning boiler pulverized coal preparation system, can provide qualification for each burner of boiler
Coal dust.Each burner of boiler is connected to by tube cell with separator for coal mill respectively, in production practices, if between each tube cell because
Coal powder distribation it is unbalanced and there is a situation where powder amount and coal-air ratio deviation are excessive, then burning tissues will be influenced, lead to the shape that burns
Condition is undesirable, the problems such as degrading burning in stove, generation thermic load deflection, slagging, high unburned carbon in flue dust occurs.Therefore, such as
The coal powder distribation harmony and wind powder uniformity what improves each tube cell of pulverized coal preparation system are ensured safe with improving boiler combustion efficiency
Steady combustion, becomes those skilled in the art's technical problem urgently to be resolved hurrily.
Invention content
In view of this, the present invention provides a kind of coal-burning boiler pulverized coal preparation system and its dynamic separator, the dynamic separator
The coal powder distribation harmony and wind powder uniformity that each tube cell can be effectively improved ensure safety to improve boiler combustion efficiency
Steady combustion.
In order to achieve the above object, the present invention provides the following technical solutions：
A kind of dynamic separator of coal-burning boiler pulverized coal preparation system is connected with for pulverized coal conveying on dynamic separator ontology
Tube cell is provided with equal powder component in the intersection of the dynamic separator ontology and the tube cell, and the equal powder component includes ring
The circle body of shape and the multiple blades being arranged on the inner wall of the circle body, multiple blades uniformly divide around the center of the circle body
Cloth, and it is formed with wind passage between two adjacent blades；The circle body surrounds going out for the dynamic separator ontology
Powder mouth, and be fixedly connected with the edge of the meal outlet.
Preferably, in above-mentioned dynamic separator, the shape of the circle body is circular ring shape.
Preferably, in above-mentioned dynamic separator, the blade is writing board shape.
Preferably, in above-mentioned dynamic separator, in arbitrary cross section, the blade is directed in the circle body
The heart.
Preferably, in above-mentioned dynamic separator, in arbitrary cross section, radial direction of the blade with the circle body
At the first default angle.
Preferably, in above-mentioned dynamic separator, the first default angle is 5 °~30 °.
Preferably, in above-mentioned dynamic separator, the blade is axially extending along the circle body.
Preferably, in above-mentioned dynamic separator, the blade is along the axis with the circle body at the second default angle
Direction extends.
Preferably, in above-mentioned dynamic separator, the second default angle is 5 °~45 °.
A kind of coal-burning boiler pulverized coal preparation system, including dynamic separator, the dynamic separator are such as above-mentioned any one institute
Disclosed dynamic separator.
According to above-mentioned technical proposal it is found that provided by the present invention in the dynamic separator of coal-burning boiler pulverized coal preparation system,
The intersection of dynamic separator ontology and tube cell is provided with equal powder component, equal powder component includes that the circle body of annular and setting are being enclosed
Multiple blades on the inner wall of body, circle body surround the meal outlet of dynamic separator ontology, and are fixedly connected with the edge of meal outlet；
Multiple blades are uniformly distributed around the center of circle body, and are formed with wind passage between two adjacent blades.Due to coal dust from
To pass through equal powder component when starting state separator body, be disturbed using equal powder component to mixing still non-uniform wind powder mixture
It moves, flow, strengthen the uniform mixability between wind powder, can make to be distributed between fine coal air-flow continuous phase and particle phase more equal
It is even, and the powder amount deviation between different tube cells is effectively reduced, therefore, dynamic separator provided by the invention can be effectively improved respectively
The coal powder distribation of tube cell is harmonious and wind powder uniformity ensures the steady combustion of safety to improve boiler combustion efficiency.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of arrangement schematic diagram for dynamic separator that the embodiment of the present invention one provides；
Fig. 2 is a kind of schematic diagram of structure type of part 4 in Fig. 1；
Fig. 3 is the schematic diagram of another structure type of part 4 in Fig. 1；
Fig. 4 is a kind of arrangement schematic diagram of dynamic separator provided by Embodiment 2 of the present invention.
In figure label for：
1, air inlet；2, coal-grinding component；3, dynamic separator ontology；4, equal powder component；41, circle body；42, blade；5, powder
Pipe；6, interior cone shell；7, tube cell.
Specific implementation mode
In order to make it easy to understand, the invention will be further described below in conjunction with the accompanying drawings.
Embodiment one
Referring to Fig. 1, for a kind of arrangement schematic diagram for dynamic separator that the embodiment of the present invention one provides, Fig. 1 shows
Medium-speed pulverizer, raw coal are entered by coal spout (in figure at downward black arrow position) at 2 position of coal-grinding component, and wind is from air inlet
Mouth 1 enters at 2 position of coal-grinding component and blows afloat coal dust upwards.It is connected with for pulverized coal conveying on dynamic separator ontology 3
Tube cell 5 is provided with equal powder component 4 in the intersection of dynamic separator ontology 3 and tube cell 5, the wind in dynamic separator ontology 3 with
Broken lined arrows in figure are to enter in each tube cell 5 after path passes through equal powder component 4, in the process, due to dynamic separator
Centrifugation, the coal dust of bulky grain falls back to coal-grinding component 2, and the coal dust for meeting granularity requirements then enters each tube cell with the wind
5。
Since coal dust will pass through equal powder component 4 when leaving dynamic separator ontology 3, using equal powder component 4 to mixing still
Non-uniform wind powder mixture is disturbed, is flowed, and strengthens the uniform mixability between wind powder, fine coal air-flow can be made continuous
Mutually with more uniformly spread between particle phase, and effectively reduce the powder amount deviation between different tube cells 5, therefore, the present invention provides
Dynamic separator can be effectively improved each tube cell coal powder distribation is harmonious and wind powder uniformity, to improve boiler combustion effect
Rate ensures the steady combustion of safety.
Equal powder component 4 can take a variety of different structure types, be equal powder component 4 in Fig. 1 referring to Fig. 2 and Fig. 3, Fig. 2
A kind of structure type schematic diagram, Fig. 3 is the schematic diagram of another structure type of equal powder component 4 in Fig. 1.
Equal powder component 4 includes the circle body 41 and the multiple blades 42 being arranged on the inner wall of circle body 41, multiple blades of annular
42 are uniformly distributed around the center of circle body 41, and are formed with wind passage between two adjacent blades 42；Circle body 41 surrounds dynamic
The meal outlet of separator body 3, and be fixedly connected with the edge of meal outlet.
The shape of circle body 41 is consistent with the shape of the meal outlet of dynamic separator ontology 3, generally circular ring shape.In Fig. 2 and
In the structure type of Fig. 3 displayings, blade 42 all uses writing board shape, moreover, in arbitrary cross section, each blade 42 refers to
To the center of circle body 41, two kinds of structure types the difference is that, axially extending, the Fig. 3 of blade 42 in Fig. 2 along circle body 41
In blade 42 along the axis with circle body 41 at the second default angle direction extend.In specific practical application, the second default folder
Angle can be 5 °~45 °, such as 30 °.
When designing the structure of blade 42, in addition to making each blade 42 in arbitrary cross section all point in circle body 41
The heart can also make each blade 42 in arbitrary cross section preset folder at the first default angle, first with the radial of circle body 41
Angle can be 5 °~30 °, such as 15 °.
Embodiment two
It is a kind of arrangement schematic diagram of dynamic separator provided by Embodiment 2 of the present invention referring to Fig. 4, Fig. 4 shows
The dynamic separator of double-in and double-out ball mill, arrow direction flowing of the wind in Fig. 4, the coal dust of bulky grain fall back to interior cone shell
6 the insides, the pipeline along 6 lower end of interior cone shell return to coal-grinding component area, meet the coal dust of granularity requirements with the wind into powder inlet pipe
7, from fig. 4, it can be seen that coal dust also passes through equal powder component 4 when leaving dynamic separator ontology, as it was noted above, utilizing equal powder
Component 4 is disturbed to mixing still non-uniform wind powder mixture, is flowed, and the uniform mixability between wind powder is strengthened, can be with
Make to more uniformly spread between fine coal air-flow continuous phase and particle phase.
The structure type that equal powder component 4 can be taken in embodiment two is identical as being introduced in embodiment one, referring specifically to
Description in embodiment one, details are not described herein.
In the above various embodiments, the blade 42 of equal powder component 4 is generally made of high-strength abrasion-proof material, such as wear-resisting
Steel.Fixed mode had both may be used on circle body 41 in blade 42, can also be pacified by the way of movable adjustable-angle
On circle body 41.
The present invention also provides a kind of coal-burning boiler pulverized coal preparation system, which includes that above-described embodiment discloses
Dynamic separator.Since dynamic separator disclosed in above-described embodiment has above-mentioned technique effect, there is the dynamic point
Coal-burning boiler pulverized coal preparation system from device equally has above-mentioned technique effect, and repeats no more herein.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
A variety of modifications of embodiment will be apparent to those skilled in the art, it is as defined herein general
Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will not
It can be restricted to embodiment illustrated herein, and be to fit to consistent with the principles and novel features disclosed in this article most wide
Range.
Claims (10)
1. a kind of dynamic separator of coal-burning boiler pulverized coal preparation system, dynamic separator ontology are connected on (3) for pulverized coal conveying
Tube cell, which is characterized in that the intersection of the dynamic separator ontology (3) and the tube cell is provided with equal powder component (4),
The equal powder component (4) includes the multiple blades (42) of the circle body (41) and setting of annular on the inner wall of the circle body (41),
Multiple blades (42) are uniformly distributed around the center of the circle body (41), and are formed between two adjacent blades (42)
There is wind passage；The circle body (41) surrounds the meal outlet of the dynamic separator ontology (3), and with the edge of the meal outlet
It is fixedly connected.
2. dynamic separator according to claim 1, which is characterized in that the shape of the circle body (41) is circular ring shape.
3. dynamic separator according to claim 2, which is characterized in that the blade (42) is writing board shape.
4. dynamic separator according to claim 3, which is characterized in that in arbitrary cross section, the blade (42)
It is directed to the center of the circle body (41).
5. dynamic separator according to claim 3, which is characterized in that in arbitrary cross section, the blade (42)
It is radial at the first default angle with the circle body (41).
6. dynamic separator according to claim 5, which is characterized in that the first default angle is 5 °~30 °.
7. the dynamic separator according to any one of claim 3~6, which is characterized in that the blade (42) is along institute
State the axially extending of circle body (41).
8. the dynamic separator according to any one of claim 3~6, which is characterized in that the blade (42) along with
The axis of the circle body (41) extends at the direction of the second default angle.
9. dynamic separator according to claim 8, which is characterized in that the second default angle is 5 °~45 °.
10. a kind of coal-burning boiler pulverized coal preparation system, including dynamic separator, which is characterized in that the dynamic separator is such as right
It is required that the dynamic separator described in any one of 1~9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810154899.0A CN108339656A (en) | 2018-02-23 | 2018-02-23 | A kind of coal-burning boiler pulverized coal preparation system and its dynamic separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810154899.0A CN108339656A (en) | 2018-02-23 | 2018-02-23 | A kind of coal-burning boiler pulverized coal preparation system and its dynamic separator |
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| Publication Number | Publication Date |
|---|---|
| CN108339656A true CN108339656A (en) | 2018-07-31 |
Family
ID=62960316
Family Applications (1)
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|---|---|---|---|
| CN201810154899.0A Pending CN108339656A (en) | 2018-02-23 | 2018-02-23 | A kind of coal-burning boiler pulverized coal preparation system and its dynamic separator |
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| CN102773144A (en) * | 2011-05-10 | 2012-11-14 | 北京能为科技发展有限公司 | Secondary grinding device of coal mill |
| CN202700627U (en) * | 2012-08-01 | 2013-01-30 | 四川皇龙智能破碎技术股份有限公司 | Static separator of medium-speed mill |
| CN203899672U (en) * | 2014-06-20 | 2014-10-29 | 张嘉程 | Ultra-thin vertical roll mill |
| CN205550427U (en) * | 2016-04-05 | 2016-09-07 | 江苏羚羊水泥工程技术有限公司 | Half whole grinding of cement grinds and ball -milling combination system immediately |
| CN205949032U (en) * | 2016-08-25 | 2017-02-15 | 西安格瑞电力科技有限公司 | A coal dust classifier for intermediate speed is ground |
| CN206642870U (en) * | 2017-02-27 | 2017-11-17 | 中国华电集团科学技术研究总院有限公司 | The used mill separator of binary channels rotation |
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK0525423T3 (en) * | 1991-07-23 | 1995-04-24 | Krupp Polysius Ag | Apparatus and method for decomposing grinding material of different grain size |
| CN2289608Y (en) * | 1997-03-07 | 1998-09-02 | 青岛第二锅炉辅机厂 | Dynamic middlings separator |
| CN102123798A (en) * | 2008-08-12 | 2011-07-13 | 勒舍有限公司 | Process for sifting a mixture of a milled material and a fluid, and mill sifter |
| DK2254708T3 (en) * | 2008-08-12 | 2012-01-16 | Loesche Gmbh | Process for sieving a mixture of ground material and a fluid, as well as a mill screen |
| CN102773144A (en) * | 2011-05-10 | 2012-11-14 | 北京能为科技发展有限公司 | Secondary grinding device of coal mill |
| CN202700627U (en) * | 2012-08-01 | 2013-01-30 | 四川皇龙智能破碎技术股份有限公司 | Static separator of medium-speed mill |
| CN203899672U (en) * | 2014-06-20 | 2014-10-29 | 张嘉程 | Ultra-thin vertical roll mill |
| CN205550427U (en) * | 2016-04-05 | 2016-09-07 | 江苏羚羊水泥工程技术有限公司 | Half whole grinding of cement grinds and ball -milling combination system immediately |
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Application publication date: 20180731 |
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