CN104501202B - Method for quantitatively allocating pulverized coal for combustors of industrial furnace - Google Patents
Method for quantitatively allocating pulverized coal for combustors of industrial furnace Download PDFInfo
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- CN104501202B CN104501202B CN201410777877.1A CN201410777877A CN104501202B CN 104501202 B CN104501202 B CN 104501202B CN 201410777877 A CN201410777877 A CN 201410777877A CN 104501202 B CN104501202 B CN 104501202B
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- coal dust
- disk
- pulverized coal
- rationed
- industrial stoves
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Abstract
The invention discloses a method for quantitatively allocating pulverized coal for combustors of an industrial furnace. The method comprises the following steps of (1) storing milled pulverized coal in a pulverized coal cabin, and feeding the milled pulverized coal into a quantitative pulverized coal allocating device through a dust discharging valve; (2) setting a stirrer and quantitative pulverized coal allocating units of which the number is matched with the number of the combustors of the industrial furnace in the quantitative pulverized coal allocating device, enabling fluidized air to enter the lower part of the quantitative pulverized coal allocating device, forming fluidized pulverized coal by the pulverized coal under the combined action of the fluidized air and the stirrer, quantitatively allocating the pulverized coal through the quantitative pulverized coal allocating units, and finally conveying the pulverized coal to each combustor of the industrial furnace. By applying the method disclosed by the invention, accurate control and metering on pulverized coal amount of each single combustor can be realized.
Description
Technical field
The present invention relates to a kind of coal powder distribation method, more particularly to a kind of coal dust suitable for Industrial Stoves burner is quantitative
Distribution method.
Background technology
The main fuel of Industrial Stoves has coal, fuel oil, combustion gas, and the Industrial Stoves accounting of wherein coal dust burning is larger.Coal dust
Coal dust is typically sent in stove and is burnt by the application of kiln using air conveying method.According to the requirement of kiln technique, coal dust combustion
The burner of burning system often not only one, must now carry out evenly distributing for coal dust and ensure that the combustion intensity of each burner is protected
Uniformity is held, so that it is guaranteed that the heat in stove keeps uniform.
The coal powder distribation method that at present domestic industry kiln is adopted is primarily present problems with：1. between each pulverized coal channel
Wind powder ratio is unbalanced；2. the coal dust amount of each pulverized coal channel can not be controlled individually, can only be by coal dust house steward come integrally-regulated each
The coal dust amount of individual arm.Prior art is generally using a kind of rotary pulverized coal distributor of variable speed and its distribution method, band powder gas
Stream initially enters the approach cone of allotter bottom, and the rotor region of rotation is entered afterwards, adjusts in the periodicity speed-changing rotation of rotor
Under section, coal dust is here divided evenly in the range of whole circumference, and when band powder air-flow leaves rotor, air quantity, powder amount are divided evenly
To 4 power transportation pipes.Though the coal powder distribation method is capable of achieving evenly distributing for coal dust, but can not be on each arm
Coal dust amount be adjusted and measure, the integrally-regulated stream to adjust each arm can only be carried out by the flow to coal dust house steward
Amount, while the coal dust gauge amount of each arm can only be determined by the metering of house steward's flow, once rotor fault occur cause
When the coal dust amount of each pulverized coal channel occurs abnormal, will be unable to determine the actual coal dust amount of each arm.
The content of the invention
The technical problem to be solved is to provide a kind of rationed method of Industrial Stoves burner coal dust, and it is special
Levy is to comprise the steps：1. the coal dust of milled is stored in Pulverized Coal Bin, coal dust quantitative distributor is sent into by unloading valve
It is interior；2. in coal dust quantitative distributor, it is provided with agitator and quantitative with the coal dust that Industrial Stoves number of burners matches
Allocation unit, in coal dust quantitative distributor bottom fluidized wind is passed through, and coal dust is formed under the collective effect of fluidized wind and agitator
Fluidisation state coal dust, then by the rationed unit of coal dust by coal dust it is rationed and be finally transported to Industrial Stoves each burning
Device.
Further technical characteristic of the invention is：
The coal dust quantitative distributor includes：Housing, the coal powder entrance for being placed in housing upper, the fluidisation for being placed in lower housing portion
Wind entrance, the agitator for being placed in enclosure interior, also including being placed in enclosure interior and Industrial Stoves number of burners matches
The rationed unit of coal dust.
The coal dust quantitative distributor enclosure interior is provided with material level detector.
The rationed unit of the coal dust includes the feed disk with coal dust reception hole, drives the circle of feed disk rotational
Coil motor, and defeated, the air supply duct being connected with feed disk eccentric setting and soft seal；The coal dust of fluidisation state enters feed
The reception hole of disk, when reception hole is turned in the aerated area of conveying wind pipeline, coal dust is blown and delivers to Industrial Stoves
Burner, by the amount for changing the rotating speed of feed disk to be controlled to the coal dust that burner is supplied, the rotating speed for being fed disk is got over
Hurry up, the unit interval is that the coal dust amount of burner supply is bigger.
Reception hole on the feed disk is evenly distributed on feed disk in an annular region, the annular region be to
The region that defeated, air supply duct is covered during material disk rotational.
Coupling assembly is additionally provided between the feed disk and defeated, air supply duct, the coupling assembly includes：Sebific duct, rubs
Wipe ring, one end of clip and spring, wherein sebific duct connects defeated, air supply duct, other end connection drag ring, sebific duct and it is defeated, give
Wind pipeline is fixedly connected by clip, and drag ring connects with disk directly contact, one end connection drag ring of spring, the other end is fed
It is connected on defeated, air supply duct.
Reception hole on the feed disk is evenly distributed on feed disk in an annular region, and the annular region is circle
The region that drag ring is covered when disk is rotated.
Reception hole on the feed disk is tapered, above it is big little below.
The invention has the beneficial effects as follows：
Determined according to the quantity of Industrial Stoves burner due to the quantity of feeder unit, it is ensured that with a pair of burner 1
Should, and it is controlled to the coal dust that burner is supplied by being fed the rotating speed of disk in the rationed unit of change coal dust
Amount, the rotating speed for being fed disk is faster, and the unit interval is that the coal dust amount of burner supply is bigger.The metering of coal dust amount is by such as lower section
Method realizes that the speed for being fed disk is adjustable, and disc rotation speed is faster, and the coal dust amount for entering conveying wind pipeline by the circular hole of disk is got over
It is many, so as to the rotating speed for passing through to control disk reaches the purpose for controlling coal dust amount.Experiment measures the relation of coal dust amount and disc rotation speed
For once linear relationship, so as to be measured to coal dust amount by the rotating speed of disk.Therefore single burner coal can also be realized
The precise control of powder amount and metering.
Description of the drawings
Fig. 1 is the structural representation of coal dust quantitative distributor in the present invention；
Fig. 2 is the structural representation of the rationed unit of coal dust in the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention will be further described：
Embodiment one
A kind of rationed method of Industrial Stoves burner coal dust, comprises the steps：1. the coal dust of milled is stored in
In Pulverized Coal Bin, sent in coal dust quantitative distributor by unloading valve；2. in coal dust quantitative distributor, be provided with agitator and
The rationed unit of coal dust with Industrial Stoves number of burners matches, in coal dust quantitative distributor bottom fluidized wind is passed through,
Coal dust forms fluidisation state coal dust under the collective effect of fluidized wind and agitator, then by the rationed unit of coal dust by coal dust
It is rationed and be finally transported to Industrial Stoves each burners.
Coal dust quantitative distributor described in said method including housing 1, the coal dust for being placed in the top of housing 1 as shown in figure 1, enter
Mouthfuls 2, the fluidized wind entrance 3 for being placed in the bottom of housing 1, the agitator 4 being placed in inside housing 1, also including be placed in inside housing 1 with
The rationed unit 5 of coal dust that Industrial Stoves number of burners matches.In the embodiment shown in fig. 1, the coal dust is quantitative
Distributor body is internally provided with material level detector 6.In order to ensure the normal operation of coal dust quantitative distributor, high material is respectively provided with
Location probe 601, low material level detector 602, low material level detector 603, when high charge level detector 601 detects breeze material position
When stop into allotter feed；Prepare charging when controlling level drops to alarm prompting at low material level detector 602, work as material
When position height is dropped at low material level detector 603, coal dust quantitative distributor will quit work.When coal dust amount is in controlling level
When in the range of 601 to 602, the coal dust in coal dust quantitative distributor can ensure the even fluidizing state needed for conveying, corresponding coal dust
Metering also can guarantee that accuracy.
As shown in Figure 2 the rationed unit 5 of the coal dust include the feed disk 501 with coal dust reception hole, drive to
The disc motor 502 that material disk 501 is rotated, and defeated, the ajutage being connected with the feed eccentric setting of disk 501 and soft seal
Road 503；Reception hole on the feed disk 501 is tapered, above it is big little below, be easy to storage fluidisation state coal dust, Er Qiesuo
State feed disk 501 on reception hole be evenly distributed on feed disk 501 be taken in disk rotational when defeated, air supply duct 503 covered
In the annular region of lid.The coal dust of fluidisation state enters in real time the reception hole of feed disk 501, when reception hole turns to defeated, air-supply
When in the aerated area of pipeline 503, coal dust is blown out from bottom to top and is delivered to Industrial Stoves burner, by changing feed disk
Being controlled to the amount of the coal dust that burner is supplied, the rotating speed for being fed disk 501 is faster, and the unit interval is burning for 501 rotating speed
The coal dust amount of device supply is bigger.In the embodiment shown in Figure 2, between the feed disk 501 and defeated, air supply duct 503 also
Coupling assembly is provided with, the coupling assembly includes：Sebific duct 504, drag ring 505, clip 506 and spring 507, wherein sebific duct
504 one end connects defeated, air supply duct 503, and the other end connects drag ring 505, and sebific duct 504 and defeated, air supply duct 503 are by card
Hoop 506 is fixedly connected, drag ring 505 and the feed directly contact of disk 501, and one end connection drag ring 505 of spring 507 is another
End is connected on defeated, air supply duct 503.Sebific duct 504 be easy to adjust installation length, spring 507 can ensure that again drag ring 505 and to
Combining closely and soft seal between material disk 501.Wherein, the reception hole (not shown) on the feed disk 501 is in cone
Shape, above it is big little below, be evenly distributed on feed disk 501 be taken in disk rotational when the annular region that covered of drag ring 505
It is interior,.
The quantity of the rationed unit 5 of coal dust determines according to the quantity of Industrial Stoves burner, it is ensured that with burner one
One correspondence, and it is controlled to what burner was supplied by being fed the rotating speed of disk 501 in the rationed unit 5 of change coal dust
The amount of coal dust, the rotating speed for being fed disk 501 is faster, and the unit interval is that the coal dust amount of burner supply is bigger.The metering of coal dust amount
Realize by the following method, the speed for being fed disk 501 is adjustable, and disc rotation speed is faster, entered by being fed the reception hole of disk 501
The coal dust amount for entering to convey wind pipeline 503 is more, so as to the rotating speed for passing through to control feed disk 501 reaches the mesh for controlling coal dust amount
's.It is once linear relationship that experiment measures coal dust amount with the relation of the feed rotating speed of disk 501, so as to pass through to be fed disk 501
Rotating speed to coal dust amount measuring.Therefore precise control and the metering of single burner coal dust amount can also be realized.
Above-mentioned is only the description to specific embodiment, and the coverage of the present invention is not limited to above-described embodiment, conversely, this
It is bright to cover all technical sides being substantially intended to fall within the scope of the appended claims on literal or under the teaching of equivalents
Case.Protection scope of the present invention is defined by claims.
Claims (8)
1. a kind of rationed method of Industrial Stoves burner coal dust, it is characterised in that comprise the steps：1. by the coal of milled
Powder is stored in Pulverized Coal Bin, is sent in coal dust quantitative distributor by unloading valve；2. in coal dust quantitative distributor, it is provided with and stirs
Mix device and with the rationed unit of coal dust that Industrial Stoves number of burners matches, be passed through in coal dust quantitative distributor bottom
Fluidized wind, coal dust forms fluidisation state coal dust under the collective effect of fluidized wind and agitator, then by the rationed list of coal dust
Unit is rationed by coal dust and is finally transported to Industrial Stoves each burners.
2. the rationed method of Industrial Stoves burner coal dust according to claim 1, it is characterised in that：The coal dust is determined
Amount allotter includes housing, is placed in the coal powder entrance of housing upper, is placed in the fluidized wind entrance of lower housing portion, is placed in enclosure interior
Agitator, also including being placed in enclosure interior and the rationed unit of coal dust that Industrial Stoves number of burners matches.
3. the rationed method of Industrial Stoves burner coal dust according to claim 2, it is characterised in that：The coal dust is determined
Amount distributor body is internally provided with material level detector.
4. the rationed method of Industrial Stoves burner coal dust according to claim 1, it is characterised in that：The coal dust is determined
Amount allocation unit include with coal dust reception hole feed disk, drive feed disk rotational disc motor, and with feed
Disk eccentric setting and defeated, the air supply duct of soft seal connection；The coal dust of fluidisation state enters the reception hole of feed disk, works as receipts
Receive hole turn to conveying wind pipeline aerated area in when, coal dust is blown and delivers to Industrial Stoves burner, by change give
Being controlled to the amount of the coal dust that burner is supplied, the rotating speed for being fed disk is faster, and the unit interval is burning for the rotating speed of material disk
The coal dust amount of device supply is bigger.
5. the rationed method of Industrial Stoves burner coal dust according to claim 4, it is characterised in that：The feed circle
Reception hole on disk is evenly distributed on feed disk in an annular region, and the annular region is defeated when being fed disk rotational, send
The region that wind pipeline is covered.
6. the rationed method of Industrial Stoves burner coal dust according to claim 4, it is characterised in that：The feed circle
Coupling assembly is additionally provided between disk and defeated, air supply duct, the coupling assembly includes：Sebific duct, drag ring, clip and spring,
Wherein one end of sebific duct connects defeated, air supply duct, and the other end connects drag ring, and sebific duct and defeated, air supply duct are fixed by clip
Connection, drag ring and feed disk directly contact, one end connection drag ring of spring, the other end is connected on defeated, air supply duct.
7. the rationed method of Industrial Stoves burner coal dust according to claim 6, it is characterised in that：The feed circle
Reception hole on disk is evenly distributed on feed disk in an annular region, the drag ring when annular region is to be fed disk rotational
The region for being covered.
8. the rationed method of Industrial Stoves burner coal dust according to claim 4 or 5 or 6 or 7, it is characterised in that：
Reception hole on the feed disk is tapered, above it is big little below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777877.1A CN104501202B (en) | 2014-12-15 | 2014-12-15 | Method for quantitatively allocating pulverized coal for combustors of industrial furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777877.1A CN104501202B (en) | 2014-12-15 | 2014-12-15 | Method for quantitatively allocating pulverized coal for combustors of industrial furnace |
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| Publication Number | Publication Date |
|---|---|
| CN104501202A CN104501202A (en) | 2015-04-08 |
| CN104501202B true CN104501202B (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410777877.1A Active CN104501202B (en) | 2014-12-15 | 2014-12-15 | Method for quantitatively allocating pulverized coal for combustors of industrial furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106586571A (en) * | 2016-12-26 | 2017-04-26 | 大峘集团有限公司 | Adjustable speed feeder applied to pulverized coal conveying |
Citations (2)
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|---|---|---|---|---|
| CN201448862U (en) * | 2009-07-31 | 2010-05-05 | 郭翠苹 | Fuel feed system of ceramic kiln adopting dilute phase pneumatic conveying |
| CN202625393U (en) * | 2012-04-05 | 2012-12-26 | 江苏瑞帆环保装备股份有限公司 | Multi-station continuous quantitative feeding device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1262340C (en) * | 2004-01-15 | 2006-07-05 | 中钢集团天澄环保科技股份有限公司 | Disc type dust dispersedly generating apparatus using capacity quantitative dry method |
| CN2681100Y (en) * | 2004-03-29 | 2005-02-23 | 郑州丰博电子科技有限公司 | Coriolis powder constant feed weigher |
| US7878430B2 (en) * | 2006-11-20 | 2011-02-01 | The University Of Western Ontario | Method and apparatus for uniformly dispersing additive particles in fine powders |
| CN201339950Y (en) * | 2009-01-09 | 2009-11-04 | 宋军保 | Pulverized coal injection and supply system for industrial furnace |
| CN201757599U (en) * | 2010-07-06 | 2011-03-09 | 东北大学 | Small-sized quantitative injection device for powder |
| CN101943418A (en) * | 2010-09-29 | 2011-01-12 | 神华集团有限责任公司 | Powder storage and supplying device and powder storage and supplying controlling method of coal dust boiler |
| CN103625927B (en) * | 2013-12-11 | 2015-10-21 | 中国科学院生态环境研究中心 | A kind of delivery system and carrying method with the powder of mobilizing function |
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2014
- 2014-12-15 CN CN201410777877.1A patent/CN104501202B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201448862U (en) * | 2009-07-31 | 2010-05-05 | 郭翠苹 | Fuel feed system of ceramic kiln adopting dilute phase pneumatic conveying |
| CN202625393U (en) * | 2012-04-05 | 2012-12-26 | 江苏瑞帆环保装备股份有限公司 | Multi-station continuous quantitative feeding device |
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