CN205859997U - A kind of vent pulverized coal handling system - Google Patents
A kind of vent pulverized coal handling system Download PDFInfo
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- CN205859997U CN205859997U CN201620865491.0U CN201620865491U CN205859997U CN 205859997 U CN205859997 U CN 205859997U CN 201620865491 U CN201620865491 U CN 201620865491U CN 205859997 U CN205859997 U CN 205859997U
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- pipeline
- coal
- boiler
- powder
- air
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Abstract
This utility model relates to boiler technology field, is specifically related to a kind of vent pulverized coal handling system.A part of weary gas is incorporated in pipeline I by this utility model by pipeline VI, relatively reduces tertiary air air quantity so that the anaerobic environment in candle combustion zone improves further, and then improves the removal efficiency of nitrogen oxides.This utility model is arranged by weary Flash Gas Compression Skid System so that the tertiary air coal powder density being admitted to boiler is higher, thus reduces the interference burnt for main combustion zone, improves the stability of burning.And, introduce burnout degree at tertiary air air inlet arranged above IV, utilize the gas of tertiary air isolated to use as burnout degree, make unburnt coal dust at further after-flame herein, reduce unburned combustible in fly ash.
Description
Technical field
This utility model relates to boiler technology field, is specifically related to a kind of vent pulverized coal handling system.
Background technology
Domestic most power plant is coal-burning power plant, and coal combustion is the main source of nitrogen oxides, pollutes air.
In January, 2010, national environmental protection portion has worked out " thermal power plant's nitrogen oxides technological policy for treatment ", wherein clear stipulaties NOx control
The selection principle of technology: the one preferred technique controlled as coal-burning power plant's nitrogen oxides by low-NO_x combustion technology, when using the combustion of low nitrogen
After burning technology, when discharged nitrous oxides concentration is the most up to standard or is unsatisfactory for total amount requirement, denitrating flue gas facility should be built.
The one preferred technique that low-NO_x combustion technology controls as coal-burning power plant's nitrogen oxides, applies in now with operating unit
Widely, wherein carry out intermediate storage-type pulverized coal carried by hot air system often tertiary air being processed during the transformation of low nitrogen.Existing
Carry out many improvement although having in technology, but effect is not satisfactory.
Summary of the invention
In order to reduce nitrogen oxide emission, reduce fly ash combustible material, the utility model proposes a kind of transporting pulverized coal with exhaust gas system
System.
This utility model is main by the following technical solutions: a kind of vent pulverized coal handling system, including powder process unit, blowing unit
And boiler；Run coal bin that described powder process unit includes being sequentially connected with by pipeline, feeder, coal pulverizer, mill separator, thin
Powder separator and the mill exhauster being connected with pulverized-coal collector respectively and powder cabin, powder cabin is connected by pipeline machine supplying powder；Described
Blowing unit include pressure fan；
The outlet of machine supplying powder is connected with the air inlet I of boiler by pipeline I；Pressure fan is connected with pipeline I by pipeline；
Pressure fan is connected with the air inlet II of boiler by pipeline II；
Mill exhauster is connected by pipeline III weary Flash Gas Compression Skid System；Described weary Flash Gas Compression Skid System includes being arranged in parallel
Efficient cyclone and air and powder mixer；Air and powder mixer is connected with the air inlet III of boiler by pipeline IV；Efficient cyclone leads to
Cross pipeline V to connect with the air inlet IV of boiler；Pipeline VII it is provided with between air and powder mixer and efficient cyclone；Pipeline I and pipeline
Connected by pipeline VI between III.
In the application, the air inlet I of boiler introduces First air；The air inlet II of boiler introduces secondary wind；The air intake of boiler
Mouth III introduces tertiary air；The air inlet IV of boiler introduces burnout degree.
After using said structure, weary for a part for mill exhauster gas can be incorporated in pipeline I by pipeline VI, by adjusting
Valve on pipe joint line, can make weary gas obtain optimal allocation between First air and tertiary air, improve low nitrogen burning further
Effect.
It addition, from the weary gas of mill exhauster discharge through weary Flash Gas Compression Skid System, it is a part of by processing through efficient cyclone,
Being practically free of any coal dust, be admitted in boiler as burnout degree, the coal dust being separated then enters into wind by pipeline VII
In powder mixer；After another part weary gas entrance air and powder mixer and coal dust isolated with efficient cyclone mix, pass through
Air inlet III is admitted in boiler.
Described pressure fan is by the inlet communication of pipeline with coal pulverizer.
Described mill exhauster is by the inlet communication of pipeline with coal pulverizer.
Described mill separator is by the inlet communication of pipeline with coal pulverizer.
Described efficient cyclone is sack cleaner or efficient cyclone separator.
This utility model has the advantage that
1, a part of weary gas is incorporated in pipeline I by pipeline VI, relatively reduces tertiary air air quantity so that candle burning
Anaerobic environment in district improves further, and then improves the removal efficiency of nitrogen oxides.
2, tertiary air is the mixing wind of air and coal dust, and the coal dust wherein contained enters the position of burner hearth and moves down, Ke Yila
The length of long reducing zone, and decrease the powder amount arriving burning-out zone.When SOFA air quantity is constant, can further reduce flying dust and contain
Carbon amounts.
3, the tertiary air coal powder density being admitted to boiler in this utility model is higher, thus reduces and fire for main combustion zone
The interference burnt, improves the stability of burning.And, introduce burnout degree at tertiary air air inlet arranged above IV, utilize three times
The gas of wind isolated uses as burnout degree, makes unburnt coal dust at further after-flame herein, reduces flying dust flammable
Thing content.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
In figure: 1, run coal bin, 2, feeder, 3, coal pulverizer, 4, mill separator, 5, pulverized-coal collector, 6, mill exhauster, 7,
Powder cabin, 8, machine supplying powder, 9, pressure fan, 10, boiler, 11, pipeline I, 12, the air inlet I of boiler, 13, pipeline II, 14, boiler
Air inlet II, 15, pipeline III, 16, efficient cyclone, 17, air and powder mixer, 18, pipeline IV, 19, the air inlet III of boiler,
20, pipeline V, 21, the air inlet IV of boiler, 22, pipeline VII, 23, pipeline VI.
Detailed description of the invention
A kind of vent pulverized coal handling system, including powder process unit, blowing unit and boiler 10；Described powder process unit includes passing through
Run coal bin 1, feeder 2, coal pulverizer 3, mill separator 4, pulverized-coal collector 5 that pipeline is sequentially connected with and divide with fine powder respectively
The mill exhauster 6 being connected from device 5 and powder cabin 7, powder cabin 7 is connected by pipeline machine supplying powder 8；Described blowing unit includes pressure fan
9；
The outlet of machine supplying powder 8 is connected with the air inlet I12 of boiler by pipeline I11；Pressure fan 9 is by pipeline and pipeline
I11 connects；
Pressure fan 9 is connected with the air inlet II14 of boiler by pipeline II13；
Mill exhauster 6 is connected by pipeline III15 weary Flash Gas Compression Skid System；Described weary Flash Gas Compression Skid System includes being arranged in parallel
Efficient cyclone 16 and air and powder mixer 17；Air and powder mixer 17 is connected with the air inlet III19 of boiler by pipeline IV18；
Efficient cyclone 16 is connected with the air inlet IV21 of boiler by pipeline V20；Between air and powder mixer 17 and efficient cyclone 16
It is provided with pipeline VII22；Connected by pipeline VI23 between pipeline I11 and pipeline III15.
The described pressure fan 9 inlet communication by pipeline with coal pulverizer 3.
The described mill exhauster 6 inlet communication by pipeline with coal pulverizer 3.
The described mill separator 4 inlet communication by pipeline with coal pulverizer 3.
Described efficient cyclone 16 is sack cleaner or efficient cyclone separator.
Claims (5)
1. a vent pulverized coal handling system, including powder process unit, blowing unit and boiler (10)；Described powder process unit includes passing through
Run coal bin (1) that pipeline is sequentially connected with, feeder (2), coal pulverizer (3), mill separator (4), pulverized-coal collector (5) and point
The mill exhauster (6) not being connected with pulverized-coal collector (5) and powder cabin (7), powder cabin (7) is connected by pipeline machine supplying powder (8)；Described
Blowing unit include pressure fan (9)；
The outlet of machine supplying powder (8) is connected with the air inlet I (12) of boiler by pipeline I (11)；Pressure fan (9) passes through pipeline and pipe
Road I (11) connects；
Pressure fan (9) is connected with the air inlet II (14) of boiler by pipeline II (13)；
It is characterized in that: mill exhauster (6) is connected by pipeline III (15) weary Flash Gas Compression Skid System；Described weary Flash Gas Compression Skid System
Including the efficient cyclone (16) being arranged in parallel and air and powder mixer (17)；Air and powder mixer (17) passes through pipeline IV (18) and pot
Air inlet III (19) connection of stove；Efficient cyclone (16) is connected with the air inlet IV (21) of boiler by pipeline V (20)；Wind
Pipeline VII (22) it is provided with between powder mixer (17) and efficient cyclone (16)；Lead between pipeline I (11) and pipeline III (15)
Cross pipeline VI (23) connection.
A kind of vent pulverized coal handling system the most according to claim 1, it is characterised in that: described pressure fan (9) passes through pipeline
Inlet communication with coal pulverizer (3).
A kind of vent pulverized coal handling system the most according to claim 1, it is characterised in that: described mill exhauster (6) passes through pipeline
Inlet communication with coal pulverizer (3).
A kind of vent pulverized coal handling system the most according to claim 1, it is characterised in that: described mill separator (4) passes through
Pipeline and the inlet communication of coal pulverizer (3).
A kind of vent pulverized coal handling system the most according to claim 1, it is characterised in that: described efficient cyclone (16) is cloth
Bag dust collector or efficient cyclone separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620865491.0U CN205859997U (en) | 2016-08-11 | 2016-08-11 | A kind of vent pulverized coal handling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620865491.0U CN205859997U (en) | 2016-08-11 | 2016-08-11 | A kind of vent pulverized coal handling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205859997U true CN205859997U (en) | 2017-01-04 |
Family
ID=57658019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620865491.0U Expired - Fee Related CN205859997U (en) | 2016-08-11 | 2016-08-11 | A kind of vent pulverized coal handling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205859997U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980822A (en) * | 2018-07-27 | 2018-12-11 | 常州市新港热电有限公司 | A kind of low nitrogen burning coal-powder boiler and low nitrogen burning method |
| CN114764091A (en) * | 2021-01-15 | 2022-07-19 | 宝山钢铁股份有限公司 | Method for reducing carbon content of boiler fly ash |
-
2016
- 2016-08-11 CN CN201620865491.0U patent/CN205859997U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980822A (en) * | 2018-07-27 | 2018-12-11 | 常州市新港热电有限公司 | A kind of low nitrogen burning coal-powder boiler and low nitrogen burning method |
| CN114764091A (en) * | 2021-01-15 | 2022-07-19 | 宝山钢铁股份有限公司 | Method for reducing carbon content of boiler fly ash |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180409 Address after: 1 No. 246008 Anhui province Anqing City Yingjiang District Lingang Economic Development Zone of Wanjiang Avenue Patentee after: Anhui Huatai Forest Pulp & Paper Co.,Ltd. Address before: 257300 Shandong city of Dongying province Guangrao County Wei Gao Road No. 251 Patentee before: SHANDONG HUATAI PAPER Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20210811 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |