CN202141302U - Lignite drying device - Google Patents
Lignite drying device Download PDFInfo
- Publication number
- CN202141302U CN202141302U CN201120170671U CN201120170671U CN202141302U CN 202141302 U CN202141302 U CN 202141302U CN 201120170671 U CN201120170671 U CN 201120170671U CN 201120170671 U CN201120170671 U CN 201120170671U CN 202141302 U CN202141302 U CN 202141302U
- Authority
- CN
- China
- Prior art keywords
- brown coal
- drying device
- conveyer belt
- coal drying
- hot blast
- Prior art date
- 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.)
- Expired - Fee Related
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- 239000003077 lignite Substances 0.000 title claims abstract description 60
- 238000001035 drying Methods 0.000 title claims abstract description 36
- 239000002245 particle Substances 0.000 claims abstract description 26
- 239000003245 coal Substances 0.000 claims abstract description 24
- 238000012216 screening Methods 0.000 claims abstract description 3
- 238000009958 sewing Methods 0.000 claims description 2
- 230000018044 dehydration Effects 0.000 abstract description 18
- 238000006297 dehydration reaction Methods 0.000 abstract description 18
- 238000000034 method Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000006148 magnetic separator Substances 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 210000000498 stratum granulosum Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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- Drying Of Solid Materials (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The utility model relates to a lignite drying device which comprises a microwave treater which is used for carrying out dying treatment on lignite particles, and a conveyor belt which is used for conveying the lignite particles, wherein a crushing device, a screening device, a coal mill and a magnetic separator are arranged in sequence at the upstream of the microwave treater along the conveying direction, and the lignite particles on the conveyor belt can be conveyed and pass through a action area of the microwave treater so as to be carried out on dehydration drying. The beneficial effects are that the lignite drying device is simple in technique, energy-saving and environment-friendly, and good in running continuity and stability of the device, can be applied in a goingtoscale manner, is high in lignite dehydration efficiency, and does not absorb moisture again after dehydration.
Description
Technical field
The utility model relates to a kind of brown coal drying device, particularly relates to a kind of brown coal drying device that the heated drying dehydration is combined with the microwave drying dehydration.It belongs to fast energy-saving, the deep dehydration field of drying and upgrading field, the especially brown coal of brown coal.
Background technology
The brown coal reserves account for about 15% of coal in China gross reserves, are a kind of main coal resources of China.Play an important role at China's electric power and chemical industry with coal.Brown coal belong to the low coal of a kind of degree of coalification.Its moisture is 20%～50% mostly.Brown coal have flourishing hole and surface, so active high, water imbibition is strong.Brown coal directly are used for power plant's generating because of its calorific value is low and difficult.The high moisture content of brown coal also makes it be inappropriate for remote transportation simultaneously, and this also is one of bottleneck that restricts for a long time the lignite resource utilization.And pass through the moisture that dried reduces coal, and can improve calorific value and energy density on the one hand, reduce cost of transportation, can also improve the utilization ratio of downstream unit on the other hand, reduce equipment scale.Therefore the exploitation of coal drying and dewatering technology helps enlarging the comprehensive Utilization Ways of young coal, improves the market competitiveness of young coal to a great extent.
Present China is fewer for the brown coal Technology Research of Dehydration, and abroad to the existing century-old history of this research, has formed the ripe drying and dehydrating technology of overlapping more.Main brown coal dehydration technique has both at home and abroad: hot dried dehydration technique, HTHP dehydration technique, cold dried dehydration technique and vacuum expansion dehydration technique etc.These brown coal drying and dehydrating technology are bigger owing to consuming energy, complex equipments, and many places are in the scale demonstration phase, and the complicacy and the stable problem of operation have hindered these process scale application.
Process is simple, energy-conserving and environment-protective, and equipment is simple, stable, and the efficient brown coal drying device of can maximize, scale being used is the main direction of research and development always.
The utility model content
The purpose of the utility model is the complex equipments that exists to existing brown coal drying device, and energy consumption is high, and the brown coal dehydration is insufficient, reuptakes deficiencies such as moisture after the dehydration easily, and a kind of novel brown coal drying device is provided.
Above-mentioned utility model purpose realizes through the brown coal drying device that the utility model provides.
Press the brown coal drying device of the utility model, comprise microwave treater; Be used for coal particle is carried out dried; Transmitting device, said transmitting device is used to carry coal particle; Wherein, at the upper reaches of microwave treater, set gradually breaker, screening plant, concentration equipment along throughput direction; The coal particle that is positioned on the conveyer belt of said transmitting device is transferred the zone of action through said microwave treater, so that coal particle is dehydrated.Compared with prior art, press the operation continuity and the good stability of the utility model brown coal drying device, but the scale application, and the brown coal dewatering efficiency is high, does not reuptake moisture after the dehydration.
Preferably, in the zone of action of microwave treater, below conveyer belt, be provided with the hot blast chamber, hot blast gets in the hot blast chamber through the air inlet of hot blast chamber.Conveyer belt is provided with air vent, and hot blast gets into through air vent and interacts with the brown coal particle.When coal particle is carried out microwave drying treatment, coal particle is fed hot blast make dehydration evenly, and further improve dewatering efficiency.
In a favourable embodiment, said air vent constitutes through the circular net that grid on sewing and mend then or paste in perforate on the conveyer belt is preferably 1～2mm, and the advantage of this air vent that is made up of circular net is to make hot blast to be evenly distributed.In another favourable embodiment, said air vent is that the blast cap of the protruding button on conveyer belt, installed is buckled, and wind button cap offers air outlet, adopts this blast cap to buckle, and can make hot blast be deep into every layer of inside of brown coal, thereby carry out dry preliminary treatment.
Preferably, said brown coal drying device be designed to can modular ground increase or reduce.Thus, can the brown coal drying device be changed neatly according to the requirement of brown coal drying.
Preferably, microwave treater adopts that a plurality of ophitrons are integrated to form.
Preferably, the coal particle gross thickness on the said conveyer belt is no more than 30mm.
Description of drawings
Set forth the utility model in detail by specific embodiment below.Wherein:
Fig. 1 illustrates the schematic flow sheet according to the brown coal drying method of the utility model;
Fig. 2 illustrates the structure chart according to the microwave heating appts of the utility model;
Fig. 3 illustrates the enlarged drawing of the air vent on the conveyer belt;
Fig. 4 illustrates the enlarged drawing of another kind of air vent on the conveyer belt.
The specific embodiment
Be described in detail below in conjunction with the specific embodiment of accompanying drawing the utility model.
Brown coal drying method flow sketch map as shown in Figure 1; Raw coal is through preliminary broken laggard row filter; Filter out the coal particle of size between 10～25mm on a certain direction; Coal particle is selected through the low intensity magnetic separation machine and is sent into that hot blast is horizontal moving bed to carry out preliminary treatment behind the ferromagnetic material, removes portion of water.Pretreated brown coal powder is sent into microwave heating appts through transmitting device.Said transmitting device comprises material distributing machine and conveyer belt, and it is that the brown coal after the fragmentation are arranged on the conveyer belt uniformly that material distributing machine mainly acts on, and it is to transmit brown coal and pass through flue gas, hot blast etc. that conveyer belt mainly acts on, so that play the preliminary treatment effect.
Fig. 2 is the structural representation of microwave heating appts.Deliver on the conveyer belt 4 of microwave heating appts through the transmission material distributing machine through pretreated brown coal particle, air vent 7 is housed on the conveyer belt 4, hot blast gets into hot blast chamber 5 through air inlet 6, and hot blast gets into the brown coal particle through air vent 7 and interacts.
Air vent 7 has two kinds of forms, and a kind of air vent of Fig. 3 is that on conveyer belt, to open an aperture be hole, the 10mm left and right sides, sews and mend then or pastes that to go up grid be the circular net 9 of 1～2mm, and circular net 9 press the isosceles triangle arrangement.A kind of air vent of Fig. 4 is that the blast cap that protruding button is installed on conveyer belt buckles 10 in addition, and blast cap is buckled out several air outlets 11, and blast cap is buckled and is the isosceles triangle arrangement.
Hot blast is mainly the flue gas about 100 ℃, and it has mainly acted on three:
1. smoke components is mainly carbon dioxide, and oxygen content seldom can overcome the brown coal fugitive constituent in dehydration deuterogenesis spontaneous combustion to greatest extent.
2. the brown coal stratum granulosum that makes on the conveyer belt that blasts of hot blast becomes flexible, and helps dehydration evenly.
3. hot blast can be taken away the steam that removes in the brown coal particle, improves dewatering efficiency.
Be tiled in brown coal particle on the conveyer belt 4 along with conveyer belt 4 motion, absorb the microwave that microwave treater 1 sends simultaneously, transport by conveyer belt 4, obtain dry brown coal particle through the back that dehydrates of certain hour.
Mentioned term " top ", " below ", " left side " and " right side " only is to carry out exemplary explanation to embodiment shown in the drawings among the application, and do not constitute the restriction to the utility model.
Reference numerals list:
1, microwave treater
2, brown coal particle
3, stainless steel casing
4, conveyer belt
5, hot blast chamber
6, air inlet
7, air vent
8, aspirating hole
9, circular net
10, blast cap is buckled
11, air outlet
Claims (9)
1. brown coal drying device: said brown coal drying device comprises:
Microwave treater (1); Be used for coal particle is carried out dried;
Transmitting device (4), said transmitting device is used to carry coal particle;
Wherein, at the upper reaches of microwave treater, set gradually breaker, screening plant, concentration equipment along throughput direction;
The coal particle that is positioned on the conveyer belt (4) of said transmitting device is transferred the zone of action through said microwave treater, so that coal particle is dehydrated.
2. by the described brown coal drying device of claim 1, it is characterized in that, in the zone of action of microwave treater, be provided with hot blast chamber (5) in the below of conveyer belt (4), hot blast gets in the hot blast chamber (5) through the air inlet (6) of hot blast chamber.
3. by the described brown coal drying device of claim 2, it is characterized in that conveyer belt is provided with air vent (7), hot blast gets into through air vent (7) and interacts with the brown coal particle.
4. by the described brown coal drying device of claim 3, it is characterized in that said air vent (7) constitutes through the circular net that grid on sewing and mend then or paste in perforate on the conveyer belt is preferably 1～2mm.
5. by the described brown coal drying device of claim 3, it is characterized in that said air vent (7) is that the blast cap of the protruding button installed at conveyer belt is buckled (10), and blast cap is buckled and is offered air outlet (11).
6. by the described brown coal drying device of claim 1, it is characterized in that said brown coal drying device is designed to can modular ground increase or reduce.
7. by the described brown coal drying device of claim 1, it is characterized in that said microwave treater adopts that a plurality of ophitrons are integrated to form.
8. according to the described brown coal drying device of claim 1, it is characterized in that the coal particle gross thickness on the said conveyer belt is no more than 30mm.
9. according to the described brown coal drying device of claim 1, it is characterized in that described brown coal particle is having a direction size at least between 10～25mm on the three-dimensional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120170671U CN202141302U (en) | 2011-05-26 | 2011-05-26 | Lignite drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120170671U CN202141302U (en) | 2011-05-26 | 2011-05-26 | Lignite drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141302U true CN202141302U (en) | 2012-02-08 |
Family
ID=45552358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120170671U Expired - Fee Related CN202141302U (en) | 2011-05-26 | 2011-05-26 | Lignite drying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202141302U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796588A (en) * | 2011-05-26 | 2012-11-28 | 烟台龙源电力技术股份有限公司 | Lignite drying method and device |
| CN103074140A (en) * | 2012-12-28 | 2013-05-01 | 神华集团有限责任公司 | Coal impurity removing system |
| CN105723174A (en) * | 2013-10-30 | 2016-06-29 | 韩国技术有限公司 | Coal drying system using reheat steam |
| CN106415176A (en) * | 2014-06-17 | 2017-02-15 | 韩国技术有限公司 | Apparatus for preventing spontaneous ignition of transferred coal in apparatus for drying coal using reheat steam |
-
2011
- 2011-05-26 CN CN201120170671U patent/CN202141302U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102796588A (en) * | 2011-05-26 | 2012-11-28 | 烟台龙源电力技术股份有限公司 | Lignite drying method and device |
| CN103074140A (en) * | 2012-12-28 | 2013-05-01 | 神华集团有限责任公司 | Coal impurity removing system |
| CN105723174A (en) * | 2013-10-30 | 2016-06-29 | 韩国技术有限公司 | Coal drying system using reheat steam |
| CN106415176A (en) * | 2014-06-17 | 2017-02-15 | 韩国技术有限公司 | Apparatus for preventing spontaneous ignition of transferred coal in apparatus for drying coal using reheat steam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20190526 |