CN106824479B - A kind of raw coal system based on multiple heat exchange - Google Patents
A kind of raw coal system based on multiple heat exchange Download PDFInfo
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- CN106824479B CN106824479B CN201710081908.3A CN201710081908A CN106824479B CN 106824479 B CN106824479 B CN 106824479B CN 201710081908 A CN201710081908 A CN 201710081908A CN 106824479 B CN106824479 B CN 106824479B
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- raw coal
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- dry
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/12—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices
- F26B11/14—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in stationary drums or other mainly-closed receptacles with moving stirring devices the stirring device moving in a horizontal or slightly-inclined plane
-
- 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
- F26B21/14—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects using gases or vapours other than air or steam, e.g. inert gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/08—Drying solid materials or objects by processes not involving the application of heat by centrifugal treatment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
A kind of raw coal system based on multiple heat exchange, it is characterized in that, including trolley, middle coal store, the first feed belt, double-roll crusher, the second feed belt and raw coal drying device, trolley will be delivered in middle coal store by the raw coal of watering cooling, then double-roll crusher is delivered to by the first feed belt to be crushed, after screening, is sent by the second feed belt to raw coal drying device and be dried.
Description
Technical field
The present invention relates to raw coal process fields, and in particular to a kind of raw coal system based on multiple heat exchange.
Background technique
In the raw coal field in power plant, generally require to carry out spray cooling to coal, to prevent spontaneous combustion of pulverized coal, but it is past in this way
A large amount of moisture is brought toward being easy to cause in raw coal, especially wet rainy day gas.Therefore, raw coal is dried, be crushed, screened
Processing be it is essential, need a kind of efficient and energy-efficient raw coal system.
Summary of the invention
In view of the above-mentioned problems, the present invention provides a kind of raw coal system based on multiple heat exchange,
The purpose of the present invention is realized using following technical scheme:
A kind of raw coal system based on multiple heat exchange, characterized in that including trolley, middle coal store, the first feed belt, double
Kibbler roll, the second feed belt and raw coal drying device, trolley will be delivered to middle coal store by the raw coal of watering cooling
In, double-roll crusher is then delivered to by the first feed belt and is crushed, by screening after, by the second feed belt send to
Raw coal drying device is dried；
Raw coal drying device includes that raw coal dries shell, upper raw coal basin, middle raw coal basin and lower raw coal basin,
The dry upper part of the housing of raw coal is the dry shell of cylindric raw coal, and its underpart is the dry shell of cone cylinder shape raw coal, the dry shell of raw coal
Top is communicated with raw coal inlet, and lower end is provided with raw coal outlet；It is dry in upper raw coal basin, middle raw coal basin and lower raw coal
It is provided with the horizon bar for being fixed in stainless steel main shaft above dry disk, the original of multiple contour body shapes is connected with below horizon bar
Coal shovel, the raw coal shovel cambered surface direction on upper raw coal basin and lower raw coal basin is inside, the raw coal shovel on middle raw coal basin
Cambered surface direction it is outside.
The invention has the benefit that basis coal measures system is simple and practical, raw coal can be carried out effectively dry, broken etc.
Reason, and energy-saving effect is obvious.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings, but the embodiment in attached drawing is not constituted to any limit of the invention
System, for those of ordinary skill in the art, without creative efforts, can also obtain according to the following drawings
Other attached drawings.
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is the structural schematic diagram of raw coal drying device.
Specific embodiment
The invention will be further described with the following Examples.
A kind of raw coal system based on multiple heat exchange as shown in Figs. 1-2, including trolley 100, middle coal store 101, first
Feed belt 102, double-roll crusher 103, the second feed belt 104 and raw coal drying device 105, trolley 100 will be by spilling
Water cooling raw coal be delivered in middle coal store 101, then by the first feed belt 102 be delivered to double-roll crusher 103 into
Row is broken, after screening, is sent by the second feed belt 104 to raw coal drying device 105 and is dried.Raw coal drying device
105 include the dry shell A of raw coal, upper raw coal basin B, middle raw coal basin C and lower raw coal basin D.
The dry top shell A of raw coal is the dry shell of cylindric raw coal, and its underpart is the dry shell of cone cylinder shape raw coal, raw coal
Raw coal inlet 5 is communicated at the top of dry shell A, lower end is provided with raw coal outlet 6；It is set on the central axes of the dry shell A of raw coal
It is equipped with the stainless steel main shaft 2 driven by motor 1, upper raw coal basin B, middle raw coal basin C and lower raw coal basin D are water
The flat circular hollow disk body being fixed in the dry shell A of raw coal, the diameter and original of upper raw coal basin B and lower raw coal basin 3
The internal diameter of the dry shell A of coal is equal and the center is respectively formed with that raw coal falls mouth 30 and upper raw coal falls mouth 31, and middle raw coal is dry
The diameter of dry disk C is less than the internal diameter of the dry shell A of raw coal, and it is dry that stainless steel main shaft 2 sequentially passes through raw coal basin B, middle raw coal
The inner ring of the inner ring of dry disk C and lower raw coal basin D and stainless steel main shaft 2 and middle raw coal basin C are in close contact, and middle raw coal is dry
Dry disk C is fixed on the inner wall of the dry shell A of raw coal by the connecting rod 11 of its two sides；It is dry in upper raw coal basin B, middle raw coal
The horizon bar 12 for being fixed in stainless steel main shaft 2 is provided with above disk C and lower raw coal basin D, the lower section of horizon bar 12 is solid
It is connected to the raw coal shovel 3 of multiple contour body shapes, the raw coal shovel cambered surface direction on upper raw coal basin B and lower raw coal basin D is inside,
The cambered surface direction of raw coal shovel on middle raw coal basin C is outside；
It is connected with a funnelform funnel shell 14 below upper raw coal basin B, it is horizontally disposed in funnel shell 14 to have center
The raw coal metal hole pattern 4 being fixed on stainless steel main shaft 2, raw coal metal hole pattern 4 are rotated with the rotation of stainless steel main shaft 2；?
Steam blower 16 is installed on the side wall of the dry shell A of raw coal, the outlet conduit of steam blower 16 wherein passes through funnel shell all the way
14 are connected to the ring pipe 17 being arranged in below raw coal metal hole pattern 4, and multiple tilt upward is provided on ring pipe 17 and sprays steaming
The heating spout 32 of vapour；The lower end of upper raw coal basin B and middle raw coal basin C have been respectively communicated with the first raw coal evaporated vapor and have entered
Mouth 33 and the second raw coal evaporated vapor entrance 34；
It is also connected with steam mixer 21 on the side wall of the dry shell A of raw coal, the first row being connected to upper raw coal basin B
Tracheae 22, the second exhaust pipe 23 being connected to middle raw coal basin C divide with the lower raw coal basin D third exhaust pipe 24 being connected to
Steam is not conveyed to steam mixer 21, the outlet of steam mixer 21 is connected to the entrance of steam blower 16, and lower raw coal is dry
The external vapour source inlet tube G of the external heating vapour source of access is communicated on disk D；On the conic tube inner wall of the dry lower part shell A of raw coal
Be connected with it is hollow be all cone cylinder shape bottom sleeves H, the outlet of the entrance connection steam blower 16 of bottom sleeves H, outlet
Steam is conveyed to steam mixer 21；The bottom of stainless steel main shaft 2 is connected with the throwing disc 27 of a bottom of bowl shape, and throwing disc 27 is placed in bottom
In the space that portion sleeve H is surrounded；Likewise, can be set and upper original below middle raw coal basin C and lower raw coal basin D
Identical funnel shell, raw coal metal hole pattern, ring pipe and steam jet below coal basin B, gas source is from steam blower 16
Outlet, for the heat of raw coal basin C in recycle and the bottom surface lower raw coal basin D, for the clear consideration of view, in figure
Show a set of bottom surface heat reclaim unit.
When the raw coal drying device works, the process of raw coal are as follows: raw coal enters from raw coal inlet 5 and falls on upper raw coal drying
On disk B, constantly raw coal falls the propulsion of mouth 30 upwards under the raw coal shovel Stirring effect above upper raw coal basin B, then falls
Onto middle raw coal basin C, the Stirring of raw coal shovel of the raw coal above middle raw coal basin C on middle raw coal basin C
The lower border movement to middle raw coal basin C, and drop on lower raw coal basin D, similarly, on lower raw coal basin D
It falls mouth 31 from upper raw coal under the raw coal shovel effect of raw coal on it to drop in throwing disc, the raw coal in throwing disc 27 is thrown away by centrifugal force
Strike the drying that final stage is carried out on the inner surface of bottom sleeves H；
The process of steam are as follows: outside heating vapour source enters from the external vapour source inlet tube G of lower raw coal basin D, and under
Raw coal on raw coal basin D is heated, steam a part that the raw coal being heated is evaporated therefrom raw coal basin C
Gap between the dry shell A of raw coal ascends into funnel shell 14, and enters the first raw coal evaporated vapor entrance 33 in turn
The middle heating steam as upper raw coal basin B, and another part enters in conduct from the second raw coal evaporated vapor entrance 34
The heating steam of raw coal basin C, the steam that the raw coal on middle raw coal basin C evaporates after being heated are evaporated from the first raw coal
Steam inlet 33 enters the also heating steam as upper raw coal basin B；Steam mixer 21 receive upper raw coal basin B, in
After the steam discharge of raw coal basin C, lower raw coal basin D and bottom sleeves H are mixed, sent respectively by steam blower 16 to annular
Heating source is used as in pipe 17 and bottom sleeves H；The steam sprayed from heating spout 32 the constantly original on raw coal metal hole pattern 4
Coal applies blowing force, so that the raw coal on raw coal metal hole pattern 4 is by centrifugal force and constantly to 4 border movement of raw coal metal hole pattern
While be affixed to the bottom surface of raw coal basin B, the heat for changing previous basin bottom surface can only be by the side of radiation heat transfer
Formula is sent to the drawbacks of raw coal, but is partially or completely changed to the contact heat-exchanging that heat exchange efficiency greatly improves, and substantially increases and changes
The thermal efficiency and heat utilization ratio；Raw coal evaporates after being heated on the steam and upper raw coal basin B that steam jet 18 sprays
Vapour mixture, partially enter the first raw coal evaporated vapor entrance 33, the last steam exhaust of another part is by the dry shell A of raw coal
Atmosphere is discharged in steam exhaust row's mouth 28 at top.Be respectively provided on each pipeline direction have with the consistent inlet non return check valve of steam flow,
The minimum point of each pipeline is provided with hydrophobic point.It should be noted that it is sufficiently high to guarantee that external heating vapour source has as far as possible
The degree of superheat prevents raw coal from carrying a large amount of condensed water and influencing drying effect to reduce generation hydrophobic in heat drying process.
The raw coal drying device is ingenious in design, not only takes full advantage of the steam generated after raw coal is heated and carries out to the raw coal of upper level
The drawbacks of heat for heating again, and changing previous basin bottom surface can only be sent to raw coal by way of radiation heat transfer,
But it is partially or completely changed to the contact heat-exchanging that heat exchange efficiency greatly improves, substantially increase heat exchange efficiency and heat utilization
Rate.
Preferably, the trolley 100 is the motor-driven trolley of hydraulic arm shovel.
Preferably, the second transmission 104 band of skin tilts upward arrangement.
Preferably, former coal screening is completed by screening machine.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (6)
1. a kind of raw coal system based on multiple heat exchange, characterized in that including trolley, middle coal store, the first feed belt, double roller
Formula crusher, the second feed belt and raw coal drying device, trolley will be delivered in middle coal store by the raw coal of watering cooling,
Then double-roll crusher is delivered to by the first feed belt to be crushed, after screening, sent by the second feed belt to original
Coal drying device is dried；
Raw coal drying device includes the dry shell of raw coal, upper raw coal basin, middle raw coal basin and lower raw coal basin, raw coal
Dry upper part of the housing is the dry shell of cylindric raw coal, and its underpart is the dry shell of cone cylinder shape raw coal, the dry case top of raw coal
It is communicated with raw coal inlet, lower end is provided with raw coal outlet；In upper raw coal basin, middle raw coal basin and lower raw coal basin
Top be provided with the horizon bar for being fixed in stainless steel main shaft, the raw coal of multiple contour body shapes is connected with below horizon bar
It shovels, the raw coal shovel cambered surface direction on upper raw coal basin and lower raw coal basin is inside, the raw coal shovel on middle raw coal basin
Cambered surface direction is outside；
Second feed belt tilts upward arrangement；Be provided on the central axes of the dry shell of raw coal be driven by motor it is stainless
Steel main shaft, the upper raw coal basin from top to bottom set gradually, middle raw coal basin and lower raw coal basin are horizontal affixed
In the dry intracorporal circular hollow disk body of shell of raw coal, the dry shell of the diameter and raw coal of upper raw coal basin and lower raw coal basin
Internal diameter is equal and the center is respectively formed with raw coal Luo Kou and lower raw coal falls mouth, the diameter of middle raw coal basin is less than original
The internal diameter of the dry shell of coal, stainless steel main shaft sequentially pass through raw coal basin, middle raw coal basin and lower raw coal basin
Inner ring and stainless steel main shaft and the inner ring of middle raw coal basin are in close contact, and middle raw coal basin is affixed by the connecting rod of its two sides
In on the inner wall of the dry shell of raw coal；
It is connected with a funnelform funnel shell below upper raw coal basin, horizontally disposed in funnel shell to have center to be fixed in stainless
Raw coal metal hole pattern on steel main shaft, raw coal metal hole pattern are rotated with the rotation of stainless steel main shaft；
Former coal screening is completed by screening machine；Steam blower is installed on the side wall of the dry shell of raw coal, steam blower goes out
Mouth pipeline wherein passes through funnel shell all the way and is connected to the ring pipe that raw coal metal aperture side off the net is arranged in, and is provided on ring pipe more
It is a to tilt upward the heating spout for spraying steam；The lower end of upper raw coal basin and middle raw coal basin has been respectively communicated with the first original
Coal evaporated vapor entrance and the second raw coal evaporated vapor entrance.
2. a kind of raw coal system based on multiple heat exchange according to claim 1, characterized in that the trolley is hydraulic arm
The motor-driven trolley of shovel；It is also connected with steam mixer on the side wall of the dry shell of raw coal, first be connected to upper raw coal basin
Exhaust pipe, the second exhaust pipe being connected to middle raw coal basin, the third exhaust pipe being connected to lower raw coal basin are respectively to steaming
Steam mixer conveys steam, and the outlet of steam mixer is connected to the entrance of steam blower, is communicated with and connects on lower raw coal basin
Enter the external vapour source inlet tube of external heating vapour source.
3. a kind of raw coal system based on multiple heat exchange according to claim 2, characterized in that the dry lower part of the housing of raw coal
Conic tube inner wall on be connected with it is hollow be all cone cylinder shape bottom sleeves, the entrance connection steam blower of bottom sleeves goes out
Mouthful, outlet conveying steam to steam mixer；The bottom of stainless steel main shaft is connected with the throwing disc of a bottom of bowl shape, and throwing disc is placed in
In the space that bottom sleeves surround.
4. a kind of raw coal system based on multiple heat exchange according to claim 3, characterized in that raw coal from raw coal inlet into
Enter and fall on raw coal basin, constantly raw coal is fallen upwards under the raw coal shovel Stirring effect above upper raw coal basin
Mouth promotes, and then falls on middle raw coal basin, raw coal shovel of the raw coal on middle raw coal basin above middle raw coal basin
Stirring under to middle raw coal basin border movement, and drop on lower raw coal basin, on lower raw coal basin
It falls mouth from lower raw coal under the raw coal shovel effect of raw coal on it to drop in throwing disc, the raw coal in throwing disc throws away shock by centrifugal force
The drying of final stage is carried out on to the inner surface of bottom sleeves.
5. a kind of raw coal system based on multiple heat exchange according to claim 4, characterized in that outside heating vapour source is under
The external vapour source inlet tube of raw coal basin enters, and heats to the raw coal on lower raw coal basin, the raw coal being heated
Gap of the steam a part being evaporated therefrom between raw coal basin and the dry shell of raw coal ascends into funnel shell,
And enter the heating steam in the first raw coal evaporated vapor entrance as upper raw coal basin in turn, and another part is former from second
Enter the heating steam of the raw coal basin as in coal evaporated vapor entrance, the raw coal on middle raw coal basin steams after being heated
The steam of sending enters the also heating steam as upper raw coal basin from the first raw coal evaporated vapor entrance；Steam mixer connects
Raw coal basin in receipts, middle raw coal basin, lower raw coal basin and bottom sleeves steam discharge mixed after, by steam blower
It is sent respectively into ring pipe and bottom sleeves as heating source.
6. a kind of raw coal system based on multiple heat exchange according to claim 5, characterized in that sprayed by steam jet
Steam constantly applies blowing force to the online raw coal of raw coal metal aperture, so that in the online raw coal of raw coal metal aperture by centrifugal force
And the bottom surface of upper raw coal basin is affixed to while constantly moving to raw coal metal aperture network edge；Steam jet spray steam with
And the vapour mixture that raw coal evaporates after being heated on upper raw coal basin, partially enter the first raw coal evaporated vapor entrance,
Atmosphere is discharged by steam exhaust row's mouth of the dry case top of raw coal in the last steam exhaust of another part.
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| DE3110156C2 (en) * | 1981-03-16 | 1983-09-08 | Didier Engineering Gmbh, 4300 Essen | Device for drying and / or preheating fine-grained and / or dust-like solids |
| CN2494964Y (en) * | 2001-08-11 | 2002-06-12 | 哈尔滨工业大学达通热能工程有限公司 | Full-automatic high-moisture raw coal fluidized bed dryer |
| JP2007125472A (en) * | 2005-11-01 | 2007-05-24 | Shin Meiwa Ind Co Ltd | Garbage dryer and garbage drying system |
| CN101519614A (en) * | 2009-03-04 | 2009-09-02 | 中国化学工程股份有限公司 | Process for dryness, formation and further processing of water-enriched lignite |
| CN101709880A (en) * | 2009-11-10 | 2010-05-19 | 中国五环工程有限公司 | Combustion power generating process of lignite processing and upgrading long-distance transportation power plant boiler |
| CN102997635A (en) * | 2012-12-20 | 2013-03-27 | 四川省机械研究设计院 | Boiling drawer tray drier |
| CN202902787U (en) * | 2012-09-08 | 2013-04-24 | 常州市一新干燥设备有限公司 | Tray drier |
| CN205536653U (en) * | 2016-03-03 | 2016-08-31 | 广州亿群化纤科技有限公司 | Modular tray drier |
-
2017
- 2017-02-15 CN CN201710081908.3A patent/CN106824479B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3110156C2 (en) * | 1981-03-16 | 1983-09-08 | Didier Engineering Gmbh, 4300 Essen | Device for drying and / or preheating fine-grained and / or dust-like solids |
| CN2494964Y (en) * | 2001-08-11 | 2002-06-12 | 哈尔滨工业大学达通热能工程有限公司 | Full-automatic high-moisture raw coal fluidized bed dryer |
| JP2007125472A (en) * | 2005-11-01 | 2007-05-24 | Shin Meiwa Ind Co Ltd | Garbage dryer and garbage drying system |
| CN101519614A (en) * | 2009-03-04 | 2009-09-02 | 中国化学工程股份有限公司 | Process for dryness, formation and further processing of water-enriched lignite |
| CN101709880A (en) * | 2009-11-10 | 2010-05-19 | 中国五环工程有限公司 | Combustion power generating process of lignite processing and upgrading long-distance transportation power plant boiler |
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| CN205536653U (en) * | 2016-03-03 | 2016-08-31 | 广州亿群化纤科技有限公司 | Modular tray drier |
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