CN106052365A - Pulverized coal preparing and drying method for full-automatic sampling of coal, application thereof and pulverized coal preparing and drying device - Google Patents
Pulverized coal preparing and drying method for full-automatic sampling of coal, application thereof and pulverized coal preparing and drying device Download PDFInfo
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- CN106052365A CN106052365A CN201610607253.4A CN201610607253A CN106052365A CN 106052365 A CN106052365 A CN 106052365A CN 201610607253 A CN201610607253 A CN 201610607253A CN 106052365 A CN106052365 A CN 106052365A
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- coal
- fan mill
- air heater
- full
- pulverized coal
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2866—Grinding or homogeneising
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention discloses a pulverized coal preparing and drying method for full-automatic sampling of coal. The pulverized coal preparing and drying method is convenient to realize automatic operation. The pulverized coal preparing and drying method is characterized in that a fan mill is used for crushing, an air heater is used for drying, and a centrifugal fan is used for supplying air, and on that basis, an analyzing coal sample of which the diameter is not greater than 0.2mm can be prepared through pulverized coal of which the diameter is not greater than 3mm; the fan mill, the air heater and the centrifugal fan are applied to the crushing and drying of a full-automatic sample preparing system. A pulverized coal preparing and drying device comprises the fan mill, the air heater and the centrifugal fan, wherein a primary discharging port, a discharging port, a feeding port and a hot air inlet are formed in the fan mill; a reflowing pipe is connected between the primary discharging port and the feeding port; a hot air outlet of the air heater is connected with the hot air inlet of the fan mill; an air outlet of the centrifugal fan is connected with an air inlet of the air heater. With the adoption of the pulverized coal preparing and drying method for the full-automatic sampling of the coal and the pulverized coal preparing and drying device, the problems of difficulty in material collection and cross pollution of samples of traditional pulverized coal manufacturing equipment can be solved; in addition, the pulverized coal suspending in a chamber of the fan mill is easily dried through hot air of the air heater, so that various pulverized coal in drying can remain the natural properties.
Description
Technical field
The present invention relates to the sample preparation of a kind of coal, the powder process furnace drying method in the full-automatic sample preparation of a kind of coal
And apply and powder process drying unit, particularly relate to a kind of analysis coal that the pulverized coal preparation of particle diameter≤3 is become particle diameter≤0.2
Powder process furnace drying method in the full-automatic sample preparation of coal of sample and application and powder process drying unit.
Background technology
In the nineties latter stage, the sample making technology of domestic coal is in relatively backward state, and its sample preparation work relies on people substantially
Work operates.Domestic Firsts in 1999 integrate the crushing division combined sample making machine group trend of purchasing city crushing twice division twice
, obtain the consistent accreditation of domestic correspondent, substantially sample preparation work is freed from loaded down with trivial details manual operation, it is achieved that sample preparation
Work is semi-automatic；Not only alleviating hand labor intensity, also part avoids manual operation error, improves sample preparation accurate
Degree.But, its sample preparation needs certain cycle, and needs certain hand labor intensity, and moisture and fine powder loss are relatively big, sample preparation
Precision is difficult to ensure that, often has bias to occur, and, there is the danger introducing personal error, work to the coal management of enterprise
Bring great difficulty.Accordingly, it would be desirable to develop a kind of automatization's sample-preparing system each sample preparation program being united, by one
Determine the big particulate coal of weight and make the coal sampling of constant weight particle diameter≤0.2, in order to general industry analysis.Full-automatic sample preparation
System is made up of with multiple sample making apparatus transporting equipment.
At present, in the full-automatic sample-preparing system of domestic off-line, the pulverized coal preparation of particle diameter≤3 is being become particle diameter≤0.2
Coal sampling during, usually take the coal dust of 100g particle diameter≤3, use microwave or infrared drying stove to be dried, use
Three flour mill pulverizing of alms bowl formula.But, the coal dust that three flour mills of alms bowl formula are pulverized the most tightly be pasted onto bowl inner surface, low,
Middle pressure bears the method for suction can not clear up the coal dust remaining in alms bowl wall completely, needs manual cleaning, is not easy to automation mechanized operation and use
The negative method inhaled collects the coal dust in bowl, and negative suction pipe easily blocks, and affects the normal operation of equipment.Although and microwave drying symbol
Conjunction GB/T19494.2-2004 " Coal Mechanicalization sampling part 2: the preparation of coal sample " standard, but the coal that fact proved
When microwave drying, coal sample has the suspicion that ature of coal changes after having spark phenomenon, and microwave drying.
Summary of the invention
It is an object of the invention to provide a kind of conveniently realize automation mechanized operation the pulverized coal preparation of particle diameter≤3 is become particle diameter
Powder process furnace drying method in the full-automatic sample preparation of coal of the coal sampling of≤0.2 and application and powder process drying unit.
The present invention adopts the following technical scheme that and realizes its goal of the invention, and the powder process in the full-automatic sample preparation of a kind of coal is dried
Drying method, the coal dust of particle diameter≤3 is prepared as the coal sampling of particle diameter≤0.2 by powder process drying unit, and described powder process is dried
Device includes fan mill, air heater and centrifugal blower, and the coal dust of particle diameter≤3 enters from fan mill charging aperture, at fan
Mill beater plate strike under crushed, pulverized coal dust under the blast that beater plate produces through primary discharge hole for discharge, particle diameter
The coal dust of≤0.2 is collected through discharging opening, and the coal dust of particle diameter ＞ 0.2 continues crushed in return duct returns to fan mill,
During coal dust is pulverized, coal dust is dried by air heater by the hot wind inlet heat air delivery on fan mill, when
All behind particle diameter≤0.2 of coal dust, centrifugal blower the coal dust remaining in fan mill inwall is blown out.
Powder process drying unit of the present invention includes fan mill, air heater and centrifugal blower, at the beginning of fan mill is provided with
Level discharging opening, discharging opening, charging aperture and hot wind inlet, be connected between primary discharging opening and charging aperture and have return duct, and air heats
The hot-blast outlet of device is connected with the hot wind inlet of fan mill, and the air outlet of centrifugal blower is connected with the air inlet of air heater.
The application in the full-automatic sample preparation of coal of the powder process furnace drying method in a kind of full-automatic sample preparation of coal described above, i.e.
As the pulverizing in full-automatic sample-preparing system and drying, the pulverized coal preparation of particle diameter≤3 is become the analysis coal of particle diameter≤0.2
Sample.
A kind of powder process drying unit in the full-automatic sample preparation of coal, it includes fan mill, air heater and centrifugal blower,
Fan mill is provided with primary discharging opening, discharging opening, charging aperture and hot wind inlet, and being connected between primary discharging opening and charging aperture has back
Flow tube, the hot-blast outlet of air heater is connected with the hot wind inlet of fan mill, the air outlet of centrifugal blower and air heater
Air inlet connect.
Owing to using technique scheme, the present invention preferably achieves goal of the invention, uses fan mill to pulverize, and air adds
Hot device is dried, and centrifugal blower is blown, and solves tradition powder manufacturing apparatus material collection difficulty, the problem of sample cross contamination, and suspends
Coal dust at fan mill intracavity is easily heated by the air the hot air drying of device, it is ensured that when various coal dusts are dried, its coal characteristic is not
Can change.
Accompanying drawing explanation
Fig. 1 is the structural representation of powder process drying unit of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the invention will be further described.
Powder process furnace drying method in the full-automatic sample preparation of a kind of coal, the coal dust of particle diameter≤3 is prepared by powder process drying unit
Becoming the coal sampling of particle diameter≤0.2, described powder process drying unit includes fan mill 6, air heater 7 and centrifugal blower 8, grain
The coal dust of footpath≤3 enters from fan mill charging aperture 1, crushed under the strike of fan mill beater plate, and pulverized coal dust exists
Through primary discharging opening 4 discharging under the blast that beater plate produces, the coal dust of particle diameter≤0.2 is collected through discharging opening 3, particle diameter ＞
The coal dust of 0.2 continues crushed in return duct 2 returns to fan mill 6, and during coal dust is pulverized, air heater 7 leads to
Coal dust is dried, when behind particle diameter≤0.2 of whole coal dusts, by being centrifuged by the hot wind inlet heat air delivery on passing through fan mill 6
The coal dust remaining in fan mill 6 inwall is blown out by blower fan 8.
As shown in Figure 1, powder process drying unit of the present invention includes fan mill 6, air heater 7 and centrifugal blower 8, wind
Fan mill 6 is provided with primary discharging opening 4, discharging opening 3, charging aperture 1 and hot wind inlet, and primary discharging opening 4 is connected between charging aperture 1
Having return duct 2, the hot-blast outlet of air heater 7 to be connected with the hot wind inlet of fan mill 6, the air outlet of centrifugal blower 8 is with empty
The air inlet of hot-air heater 7 connects.
The application in the full-automatic sample preparation of coal of the powder process furnace drying method in a kind of full-automatic sample preparation of coal described above, i.e.
As the pulverizing in full-automatic sample-preparing system and drying, the pulverized coal preparation of particle diameter≤3 is become the analysis coal of particle diameter≤0.2
Sample.
As shown in Figure 1, the powder process drying unit in the full-automatic sample preparation of a kind of coal, it includes fan mill 6, air heater
7 and centrifugal blower 8, fan mill 6 is provided with primary discharging opening 4, discharging opening 3, charging aperture 1 and hot wind inlet, primary discharging opening 4 with
Connecting between charging aperture 1 has return duct 2, the hot-blast outlet of air heater 7 to be connected with the hot wind inlet of fan mill 6, centrifugal wind
The air outlet of machine 8 is connected with the air inlet of air heater 7.
The hot-blast outlet of air heater 7 of the present invention is connected by warm-air pipe 5 with the hot wind inlet of fan mill 6, centrifugal wind
The air outlet of machine 8 is connected by blast pipe 9 with the air inlet of air heater 7.
When the present invention works, the coal dust of particle diameter≤3 enters from fan mill charging aperture 1, and coal dust is at fan mill beater plate
Under strike crushed, pulverized coal dust under the blast that beater plate produces through primary discharging opening 4 discharging, owing to pipeline becomes suddenly
Greatly, blast reduces, and the particle diameter coal dust more than 0.2 continues to pulverize in return duct 2 returns to fan mill 6, the coal of particle diameter≤0.2
Powder is collected through discharging opening 3.In fan mill 6 work process, centrifugal blower 8, air heater 7 works, and air heater 7 produces
Coal dust is dried in fan mill 6 sent into by warm-air pipe 5 by raw hot blast, because in pulverizing process, coal dust is suspended in wind
Fan mill 6 intracavity, so, coal dust is easy to be dried, and also ensure that the drying time using air heater 7 to be dried coal dust；With
Time, the most conscientiously ensure that when various coal dust is dried, its coal characteristic will not change because of dry link.When coal particle size is complete
Behind portion≤0.2, centrifugal blower 8 breezes up, and is blown out by the coal dust remaining in fan mill 6 intracavity and collects, it is ensured that fan mill 6
Intracavity does not remain coal sample, solves sample cross contamination problem, meanwhile, also by adjusting turning of fan mill 6 and centrifugal blower 8
Speed, adjusts the grinding particle size of coal dust.
Claims (4)
1. the powder process furnace drying method in the full-automatic sample preparation of coal, is characterized in that the coal dust of particle diameter≤3 is dried dress by powder process
Putting the coal sampling being prepared as particle diameter≤0.2, described powder process drying unit includes fan mill, air heater and centrifugal wind
Machine, the coal dust of particle diameter≤3 enters from fan mill charging aperture, crushed under the strike of fan mill beater plate, pulverized coal
Powder is through primary discharge hole for discharge under the blast that beater plate produces, and the coal dust of particle diameter≤0.2 is collected through discharging opening, particle diameter ＞
The coal dust of 0.2 continues crushed in return duct returns to fan mill, and during coal dust is pulverized, air heater passes through wind
Coal dust is dried by the hot wind inlet heat air delivery on fan mill, when behind particle diameter≤0.2 of whole coal dusts, centrifugal blower inciting somebody to action
Remain in the coal dust blowout of fan mill inwall.
The most according to claim 1, the powder process furnace drying method in the full-automatic sample preparation of coal, is characterized in that dress is dried in described powder process
Putting and include fan mill, air heater and centrifugal blower, fan mill is provided with primary discharging opening, discharging opening, charging aperture and hot blast
Import, is connected between primary discharging opening and charging aperture and has return duct, and the hot-blast outlet of air heater enters with the hot blast of fan mill
Mouth connects, and the air outlet of centrifugal blower is connected with the air inlet of air heater.
3. the powder process furnace drying method in the full-automatic sample preparation of coal as claimed in claim 1 or 2 is in the full-automatic sample preparation of coal
Application, be i.e. used as the pulverizing in full-automatic sample-preparing system and drying, the pulverized coal preparation of particle diameter≤3 become particle diameter≤0.2
Coal sampling.
4. the powder process drying unit in the full-automatic sample preparation of coal, it is characterized in that it include fan mill, air heater and from
Heart-wind syndrome machine, fan mill is provided with primary discharging opening, discharging opening, charging aperture and hot wind inlet, between primary discharging opening and charging aperture
Connecting and have return duct, the hot-blast outlet of air heater is connected with the hot wind inlet of fan mill, and the air outlet of centrifugal blower is with empty
The air inlet of hot-air heater connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610607253.4A CN106052365A (en) | 2016-07-29 | 2016-07-29 | Pulverized coal preparing and drying method for full-automatic sampling of coal, application thereof and pulverized coal preparing and drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610607253.4A CN106052365A (en) | 2016-07-29 | 2016-07-29 | Pulverized coal preparing and drying method for full-automatic sampling of coal, application thereof and pulverized coal preparing and drying device |
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| Publication Number | Publication Date |
|---|---|
| CN106052365A true CN106052365A (en) | 2016-10-26 |
Family
ID=57196304
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610607253.4A Pending CN106052365A (en) | 2016-07-29 | 2016-07-29 | Pulverized coal preparing and drying method for full-automatic sampling of coal, application thereof and pulverized coal preparing and drying device |
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| CN (1) | CN106052365A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072552A (en) * | 2017-11-17 | 2018-05-25 | 长沙开元仪器股份有限公司 | Coal sample powder manufacturing apparatus and its milling method |
| CN111389556A (en) * | 2020-03-30 | 2020-07-10 | 梁榕基 | Improved coal crusher and method |
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|---|---|---|---|---|
| EP0714023A2 (en) * | 1994-11-25 | 1996-05-29 | Evn Energie-Versorgung Niederösterreich Aktiengesellschaft | Method and device for the evaluation of the content of coal in ash, beam deflection element for this and method for making the same |
| CN201283312Y (en) * | 2008-10-23 | 2009-08-05 | 刘建 | Synergistic auxiliary device of fan coal mill |
| DE102011050891A1 (en) * | 2011-06-07 | 2012-12-13 | Hitachi Power Europe Gmbh | Blower integral fan mill for crushing and drying of raw brown coal, has spiral mill housing having circulating fan wheel and deflecting separator adjacent to mill outlet of mill housing |
| CN102889608A (en) * | 2011-07-20 | 2013-01-23 | 上海机易电站设备有限公司 | Direct fired pulverizing system of smoke pre-drying lignite fan mill |
| CN203549793U (en) * | 2013-09-22 | 2014-04-16 | 中国计量学院 | Combined type chain grate furnace with pulverized coal burner |
| CN206207963U (en) * | 2016-07-29 | 2017-05-31 | 益阳大明机械制造有限公司 | Powder drying unit processed in the full-automatic sample preparation of coal |
-
2016
- 2016-07-29 CN CN201610607253.4A patent/CN106052365A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0714023A2 (en) * | 1994-11-25 | 1996-05-29 | Evn Energie-Versorgung Niederösterreich Aktiengesellschaft | Method and device for the evaluation of the content of coal in ash, beam deflection element for this and method for making the same |
| CN201283312Y (en) * | 2008-10-23 | 2009-08-05 | 刘建 | Synergistic auxiliary device of fan coal mill |
| DE102011050891A1 (en) * | 2011-06-07 | 2012-12-13 | Hitachi Power Europe Gmbh | Blower integral fan mill for crushing and drying of raw brown coal, has spiral mill housing having circulating fan wheel and deflecting separator adjacent to mill outlet of mill housing |
| CN102889608A (en) * | 2011-07-20 | 2013-01-23 | 上海机易电站设备有限公司 | Direct fired pulverizing system of smoke pre-drying lignite fan mill |
| CN203549793U (en) * | 2013-09-22 | 2014-04-16 | 中国计量学院 | Combined type chain grate furnace with pulverized coal burner |
| CN206207963U (en) * | 2016-07-29 | 2017-05-31 | 益阳大明机械制造有限公司 | Powder drying unit processed in the full-automatic sample preparation of coal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072552A (en) * | 2017-11-17 | 2018-05-25 | 长沙开元仪器股份有限公司 | Coal sample powder manufacturing apparatus and its milling method |
| CN108072552B (en) * | 2017-11-17 | 2024-02-27 | 长沙开元仪器有限公司 | Coal sample pulverizing equipment and pulverizing method thereof |
| CN111389556A (en) * | 2020-03-30 | 2020-07-10 | 梁榕基 | Improved coal crusher and method |
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Application publication date: 20161026 |