CN105987394A - Direct blowing type industrial powder combustion system - Google Patents
Direct blowing type industrial powder combustion system Download PDFInfo
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- CN105987394A CN105987394A CN201510092876.8A CN201510092876A CN105987394A CN 105987394 A CN105987394 A CN 105987394A CN 201510092876 A CN201510092876 A CN 201510092876A CN 105987394 A CN105987394 A CN 105987394A
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- powder
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- air
- combustion
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Abstract
A direct blowing type industrial powder combustion system is characterized by comprising a primary air system and a secondary air system; the primary air system comprises a pulverizer, a powder discharging draught fan and a powder combustor; and the secondary air system comprises an air blower and a gas preheater. Primary air at an outlet of the pulverizer is subjected to pressure rise directly through the powder discharging draught fan and conveyed into the powder combustor. According to the combustion system, conditions are provided for the application of the advanced pulverized coal combustion technology of a power station to the field of industrial boilers.
Description
Technical field
The present invention relates to the system of a kind of combustion field, be specifically related to a kind of direct-firing industrial powder combustion system.
Background technology
At present, pulverized coal combustion must be widely applied and sufficiently develop in large-scale power station.By advanced person's
Combustion technology, can carry out the reduction of discharging of nitrogen oxides, reduce excess air coefficient and improve burn-off rate so that tail
Portion is out of stock, desulfurization and dedusting are implemented efficiently, and then realizes the clean utilization of coal.Be widely used in work
The fire grate coal cinder combustion technology of industry boiler is compared, and pulverized coal combustion has that burn-off rate is high, excess air coefficient is low
Advantage.
But, pulverized coal combustion application on mediumand smallscale industrial boilers is still in developmental stage, and exist asks
Topic also compares many.At present, the powder body combustion technology being applied to Industrial Boiler mainly has: rotary kiln coal dust firing system
System, stokehold blower mill pulverized coal combustion system and storage powder formula industrial coal powder combustion system.
The inner barrel of rotary kiln pulverized coal combustion system burner is disposed with adiabator, the easy slagging scorification of localized hyperthermia.
The imperfect combustion just entrance rotary kiln material drying of coal dust after catching fire, coal dust burn-off rate is low.
The blower mill type that stokehold blower mill pulverized coal combustion system uses due to Industrial Stoves is little, produces
Blast little so that the advanced combustion technologies such as bias combustion, fractional combustion, complicated spout structure cannot be answered
With.
Storage powder formula industrial coal powder combustion system needs to store coal dust, transports, and fuel cost is high.Coal dust exists
Volatile in storing process, bulk density become big, coal dust accumulation is agglomerating, is unfavorable for burning.
Summary of the invention
The present invention is directed to the deficiency that Industrial Boiler field pulverized coal combustion exists, invent a kind of direct-firing industry
Powder body combustion system, provides bar for the fuel such as coal and the chemical sludge clean utilization in Industrial Boiler and kiln field
Part.
The present invention is to be achieved through the following technical solutions, including primary air system and secondary air system, wherein: First air
System includes flour mill, Powder discharging fan and powder combustor；Secondary air system includes aerator, gas preheater
And powder combustor.
Described primary air system, the powder body of its flour mill outlet and gas are directly entered Powder discharging fan boosting, send into
Powder combustor.
Described Powder discharging fan uses centrifugal fan, wherein: draught fan impeller uses wear-resisting steel to process；
Blower fan inner shell is added with abrasion-proof backing block；Sealing structure is had between blower fan connecting shaft and casing；Seal structure and use pressurization
Air seal, and take cooling provision.
Present system has the on-the-spot powder process of power station pulverized coal combustion system, feature that First air pressure head is big, can be by
Advanced burner and combustion technology that power station uses are applied to Industrial Boiler field so that Industrial Boiler coal dust firing
Realize high burn-off rate, low excess air coefficient and low-nitrogen oxide discharging.
Accompanying drawing explanation
Fig. 1 is combustion system schematic diagram of the present invention；
Wherein, 1 be coal pulverizer, 2 for Powder discharging fan, 3 for burner, 4 for burner hearth, 5 for pressure fan, 6
For air preheater.
Fig. 2 is corner tangential firing system schematic of the present invention；
Wherein, 1 be blower mill, 2 for Powder discharging fan, 3 for corner tangential firing device, 4 for burner hearth, 5
For pressure fan, 6 be air preheater.
Fig. 3 is wall opposed firing system schematic of the present invention；
Wherein, 1 be low speed coal mill, 2 be Powder discharging fan, 3 be turbulent burner, 4 be burner hearth, 5 for giving
Blower fan, 6 it is air preheater.
Fig. 4 is specific embodiment of the invention layout drawing.
Detailed description of the invention
Elaborating the specific embodiment of the present invention below, the present embodiment is carried out under premised on the present invention
Implement, give detailed embodiment and concrete operating process, but under protection scope of the present invention is not limited to
The embodiment stated.
As shown in Figure 4, the present embodiment includes: coal pulverizer 1, Powder discharging fan 2, burner 3, burner hearth 4, send
Blower fan 5, for air preheater 6.
Described coal pulverizer 1 includes: air inlet 101, coal feed point 102, grind main body 103, separator 104,
Discharge 105.
Described Powder discharging fan 2 includes: import 201, impeller 202, shell 203, outlet 204, fan shaft
System 205, motor 206；Wherein fan shaft system includes: fan shaft 2051, sealing shroud 2052, blanket gas
Interface 2053, cooling water connector 2054.
Described burner 3 includes: First air import 301, secondary air inlet 302, outer second air passage 303,
Inner second air passage 304, stabilizer 305, cyclone 306, igniting sleeve 307, fire inspection interface 308.
In combustion system running, coal particle is admitted to after coal pulverizer 1 grinds, and the sending of air inlet 101
Powder air forms First air (breeze airflow).First air is directly entered exhaust fan 2.
Exhaust fan 2 uses centrifugal blower form, and wherein impeller 202 uses wear-resisting steel to process.Shell
203 wash away serious region at breeze airflow, increase wear-resisting steel plate liner plate.Fan shaft 2051 is adding through machine
After work, it is polished to optical axis further.Blanket gas interface 2053 accesses compressed air.Generate heat at sealing shroud 2052
In the case of relatively big, it is passed through cooling water cooling by cooling water connector 2054.
The First air of Powder discharging fan outlet enters the First air import 301 of burner 3, and through stabilizer 305
Spray into burner hearth 4 to burn.The combustion air of pressure fan 5 outlet, after air preheater 6 heats, enters burning
The secondary air inlet 302 of device.Secondary wind is divided into inner second air machine outer second air in burner.Inner second air warp
Burner hearth is sprayed into after crossing inner second air road 304.Outer second air, behind outer second air air channel 303, enters cyclone
306, it is then sprayed into burner hearth.
From above-mentioned case study on implementation it can be seen that by using directfired installation so that advanced turbulent burner
Industrial Boiler is applied.It addition, by use directfired installation, also make dense-dilute burner combustion technology,
The application in Industrial Boiler of the air classification low-NO_x combustion technology is achieved.
Claims (3)
1. a direct-firing industrial powder combustion system, it is characterised in that include primary air system and secondary wind
System, wherein: primary air system includes flour mill, Powder discharging fan and powder combustor；Secondary air system includes
Aerator and gas preheater.
Primary air system the most according to claim 1, it is characterised in that the First air of flour mill outlet
It is directly over Powder discharging fan boosting, sends into powder combustor.
Powder discharging fan the most according to claim 1, it is characterised in that blower fan uses centrifugal, wherein:
Draught fan impeller uses wear-resisting steel to process；Blower housing is added with abrasion-proof backing block；Blower fan connecting shaft and casing it
Between have sealing structure；Sealing structure uses gas-pressurized to seal, and takes cooling provision.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510092876.8A CN105987394A (en) | 2015-03-02 | 2015-03-02 | Direct blowing type industrial powder combustion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510092876.8A CN105987394A (en) | 2015-03-02 | 2015-03-02 | Direct blowing type industrial powder combustion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105987394A true CN105987394A (en) | 2016-10-05 |
Family
ID=57038077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510092876.8A Pending CN105987394A (en) | 2015-03-02 | 2015-03-02 | Direct blowing type industrial powder combustion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105987394A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH028610A (en) * | 1988-06-24 | 1990-01-12 | Babcock Hitachi Kk | Pulverized coal combustion device |
| CN2217727Y (en) * | 1994-11-03 | 1996-01-17 | 吕一君 | Silt-coal combustion device |
| CN201885213U (en) * | 2010-12-10 | 2011-06-29 | 华北电力大学（保定） | Primary air waste heat utilizing device of direct-blowing powder producing system of coal powder boiler |
| CN202195494U (en) * | 2011-06-20 | 2012-04-18 | 上海机易电站设备有限公司 | Brown coal intermediate-speed milling and direct blowing coal pulverizing system for smoke drying |
| CN202709087U (en) * | 2012-05-07 | 2013-01-30 | 石磊 | Automatic pulverized coal combustion system |
| CN202902320U (en) * | 2012-12-02 | 2013-04-24 | 日照绿瓦能源科技有限公司 | Compound combustion type chain-grate boiler |
| CN203099874U (en) * | 2013-03-19 | 2013-07-31 | 黑龙江省电力科学研究院 | System for improving drying capacity of intermediate-storage type milling system during coal type changing of boiler |
-
2015
- 2015-03-02 CN CN201510092876.8A patent/CN105987394A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH028610A (en) * | 1988-06-24 | 1990-01-12 | Babcock Hitachi Kk | Pulverized coal combustion device |
| CN2217727Y (en) * | 1994-11-03 | 1996-01-17 | 吕一君 | Silt-coal combustion device |
| CN201885213U (en) * | 2010-12-10 | 2011-06-29 | 华北电力大学（保定） | Primary air waste heat utilizing device of direct-blowing powder producing system of coal powder boiler |
| CN202195494U (en) * | 2011-06-20 | 2012-04-18 | 上海机易电站设备有限公司 | Brown coal intermediate-speed milling and direct blowing coal pulverizing system for smoke drying |
| CN202709087U (en) * | 2012-05-07 | 2013-01-30 | 石磊 | Automatic pulverized coal combustion system |
| CN202902320U (en) * | 2012-12-02 | 2013-04-24 | 日照绿瓦能源科技有限公司 | Compound combustion type chain-grate boiler |
| CN203099874U (en) * | 2013-03-19 | 2013-07-31 | 黑龙江省电力科学研究院 | System for improving drying capacity of intermediate-storage type milling system during coal type changing of boiler |
Non-Patent Citations (1)
| Title |
|---|
| 大连电力经济管理学校 王升晨: "《电力生产概论》", 30 June 1993, 水利电力出版社 * |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161005 |
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| WD01 | Invention patent application deemed withdrawn after publication |