CN202792820U - Novel brown coal dehydration device - Google Patents
Novel brown coal dehydration device Download PDFInfo
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- CN202792820U CN202792820U CN 201220192620 CN201220192620U CN202792820U CN 202792820 U CN202792820 U CN 202792820U CN 201220192620 CN201220192620 CN 201220192620 CN 201220192620 U CN201220192620 U CN 201220192620U CN 202792820 U CN202792820 U CN 202792820U
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- squeezing
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Abstract
The utility model provides an effective brown coal dehydration device. The brown coal dehydration device adopts a mechanical method to remove a large amount of water from a brown coal. The novel brown coal dehydration device comprises a series of continuous operation steps, wherein smashed brown coal raw coals are put into a squeezing room through a hermetically sealed material loading system, water is squeezed out from the brown coal after mechanical pressure is applied by a hydraulic machine, the water are separated from the brown coal through a multihole sintering filter plate, material is forcedly unloaded and the filter plate is flowed reversely and cleaned. The novel brown coal dehydration device provides a novel energy saving and emission reduction technology for quality extraction for high water content brown coal.
Description
Technical field
The utility model is the novel dehydration equipment about a kind of water content for reducing brown coal, its objective is long-distance transport, further processing, directly burning, or any other application for brown coal.The utility model relates to brown coal mechanical expression dehydration technique field, the upgrading of high-moisture brown coal is provided a kind of method of energy-saving and emission-reduction.
Background technology
The low-quality brown coal that are rich in water are the lower coals of degree of coalification, the stock number of brown coal accounts for 1/3 of world's coal resources total amount, there are China, Australia, Germany, Russia and the U.S. in the more country of reserves, and the lignite resource of China mainly is distributed in the areas such as the Inner Mongol, Yunnan.
Brown coal have that water content height, density are low, the characteristics of easy spontaneous combustion, these characteristics are so that brown coal are not easy to long-distance transport, its value is a greater impact, in recent years along with reserves and the supply day of coal resources are becoming tight, the brown coal majority is shallow ore bed in addition, its cost of winning is lower, so the utilization of brown coal is got up by pay attention to day by day.
The thermal efficiency that the high moisture content of brown coal makes it to be directly used in power plant's generating is very low, and discharges a large amount of greenhouse gases, and a large amount of moisture content is also so that the long-distance transport brown coal are very uneconomical.Therefore, in the urgent need to developing efficient brown coal drying/dehydration technique and equipment.For many years, the various dry technology of the class of vaporizing and the dehydration techniques of non-vaporization class of comprising are proposed, research and develop.Compare with the dry technology of vaporization class, because water is to remove with liquid form, need not to expend the latent heat of vaporization, the dehydration technique of non-vaporization class has more economy.In addition, low energy consumption also causes discharging less greenhouse gases.
Brown coal are the lower young coals of degree of coalification, exist the moisture content up to 70% in the abundant micropore of brown coal and pore.Conventional vaporization class brown coal drying technology all is with a large amount of heat energy heating brown coal, makes water vapor, thereby separates with coal.In order to reduce energy consumption and reduction of discharging, the brown coal dehydration technique of some non-vaporization classes is in laboratory and the studied exploitation of bench scale, and these technology comprise the hydro-thermal dehydration, machinery-heating power dehydration and mechanical dehydration.Such as the Australian patent specification 199712501 (patent No.: the machinery of a kind of proposal that 707679) discloses-heating power dewatering system.
Mechanical expression is a kind of potential high energy efficiency dehydration technique, and it removes the moisture content institute energy requirement of same amount, in theory only needs one of percentage less than the dry institute of vaporization energy requirement.Because some water-soluble ash remove with water, the mechanical expression dehydration also can improve ature of coal.
The mechanical expression dehydration technique is to apply mechanical pressure, to permeable filtering surface squeezing brown coal, thereby obtaining the purpose of Separation of Solid and Liquid. the mechanism of the mechanical expression dehydration of brown coal is widely studied already, comprise Banks P.J. and Burton D.R. (' Press dewatering of brown coal', Part 1, Drying Technology 1989), Murase T. et al. (' Press dewatering of brown coal', Part 2, Drying Technology 1989), with other researchers. these researchs in past are all carried out in laboratory scale device. owing to amplify these experimental provisions and realize the continuously difficulty of operation, also be used for the brown coal dehydration without putting into practice feasible mechanical expression technology so far.
To the description of the technical proposal before above-mentioned and product with mention and not being as also shall not be construed as the statement of the general knowledge described in the above-mentioned Australian open file or admitting.
Summary of the invention
The purpose of this utility model provide a kind of effectively and the equipment for reducing the brown coal water content of relatively economical.
The equipment that main purpose of the present utility model provides a kind of practicality and can amplify utilizes the mechanical expression means to remove a large amount of moisture content in the brown coal.The energy consumption of this device should only be traditional required catabiotic very small percentage of vaporization class dry technology.
The utility model also should be able to continuous operation, can realize at least continuous batch operation, to realize high production handling capacity.
It is to remove water content up to 50% by medium mechanical pressure that the utility model also has a main purpose.The depth drying process of the utility model and other technology of employing is combined, and the total power consumption of whole dry run can reduce up to 50%, and correspondingly, the greenhouse gases that whole dry run produces also can lower up to 50%.
For this reason, the utility model is by the following technical solutions: a kind of brown coal dehydration equipment comprises:
Brown coal are delivered to the device that squeezes work station, and the squeezing work station is provided with at least one mill room and each mill room comprises at least one pervious barrier or permeable part;
Utilize airtight feeding system the predetermined quantity brown coal to be delivered to the device of mill room;
Mechanical pressure is put on the device of brown coal in described at least one mill room;
In mill room, utilize mechanical pressure that moisture content is squeezed out brown coal, and make water pass the device of pervious barrier or permeable part;
Discharge mechanical pressure and the device of opening mill room;
Dehydration brown coal mechanical type is discharged the device of mill room to be used for further processing and to use;
The device that keeps the water penetration of described squeezing locular wall or permeable part by cleaning.
Preferably, described equipment also comprises the device of constructing mill room by the configuration that changes the hydraulic press crossbeam, and the parts of squeezing locular wall have been installed or determined to consist of to described crossbeam.
Preferably, the described device that applies mechanical pressure comprises hydraulic press, and wherein mill room has at least a wall can selectively move through hydraulic-driven, and mechanical pressure is put on brown coal in the mill room.
Preferably, two walls that mill room is relative can move with respect to the squeezing locular wall of periphery.In the present embodiment, described release mechanical pressure also can comprise the device that one of them moving end-wall is shifted out mill room with the device of opening mill room, thereby generation opening, it is characterized in that, another moving end-wall can move further into mill room relatively, and the brown coal that will dewater are discharged mill room by described opening.
Preferably, at least one wall of mill room is pervious barrier, and the moisture content in the brown coal can appear from described squeezing locular wall after squeezing, thereby the moisture content that squeezes out is discharged mill room.The wall of each porous of mill room is made of the porous permeable plate, and preferably, the porous permeable plate is the sintered stainless steel porous plate.
Described mill room is the cylindricality geometry, and preferably, the cylindricality geometry is the geometry of rectangular column or cylindrical column.
The utility model can also comprise a plurality of mill rooms, but their run-in synchronism or have each other the periodic operation of phase difference ground, to obtain more continuous dehydration brown coal output.
The device of described brown coal feed comprises an airtight raw coal feed tank, and it is for delivery of the brown coal of predetermined quantity, and the coal charge that airtight raw coal feed tank can suppress wherein discharges coal dust.Airtight feed tank can optionally be advanced to the squeezing work station, and coal charge is added mill room and do not produce a large amount of coal dusts.Feed tank inside can arrange distributor or agitator, and brown coal are added mill room equably.
In an embodiment of the present utility model, dehydration brown coal machinery discharge device comprises a pusher, brown coal forward direction or side direction push away the squeezing work station for dewatering, described device also comprises the coal dust extraction device, its pusher will dewater brown coal push away the squeezing work station process in, be used for the coal dust of extracting dehydration brown coal periphery, thereby farthest reduce the coal dust that is discharged in the surrounding environment.
Description of drawings
Fig. 1 is the schematic diagram of brown coal dewater unit in the one embodiment of the invention.
Fig. 2 is a kind of detail of construction of hydraulic press.
The specific embodiment
Below in conjunction with accompanying drawing principal character of the present utility model is described further.Should be appreciated that, herein described feature and be not to limit protection domain of the present utility model with reference to the described feature of accompanying drawing.
As shown in Figure 1, a kind of brown coal dehydration equipment of the present utility model comprises and contains the device that brown coal is added the airtight feeding system of mill room, utilizes the pressing device of hydraulic press squeezing brown coal, and the brown coal that will dewater are discharged the discharge device of hydraulic press.The brown coal raw coal adds mill room 15 by fully airtight feed tank 4.In reinforced process, feed tank 4 slides into forward the position that can cover whole mill room 15 fully, and coal charge flows into feed tank 4 by telescopic adjustable pipe 3 from confession coal bunker 1.Be provided with distributor/agitator 5 in the feed tank 4, can guarantee that coal charge evenly constantly adds mill room.Feeding speed is by 2 controls of rotary blade valve.As described in Figure 1, when the coal charge in the mill room 15 reaches when height expection, feed tank 4 original position of sliding back, sweeper 6 is equipped with in the front portion of feed tank 4, slides backward removing mill room 15 tops in the process and unnecessary coal charge on every side at feed tank.Whole reinforced process is all carried out in closed environment, thereby has farthest reduced pollution caused by coal dust.
Hydraulic press 7 comprises three crossbeams that are assemblied on four vertical pillars 8, and namely entablature 10, middle cross beam 14 and sill 18.Described crossbeam can or rest on required ad-hoc location along vertical pillars 8 slips.Fig. 1 and Fig. 2 have shown respectively two kinds of primary structures of two-way squeezing and one-way press hydraulic press.Hydraulic press shown in Figure 1 up and down both direction is exerted pressure, and hydraulic press shown in Figure 2 is only exerted pressure downwards.As shown in Figure 1, the hydraulic press of bidirectional pressing, its middle cross beam 14 that comprises mill room 15 keeps static.Before adding coal charge, sill 18 moves to lower squeezing 17 position that cooperate with mill room 15, serves as the diapire of mill room.In expressing process, upper and lower crossbeam 10,18 is driven by upper hydraulic cylinder 9 and lower hydraulic cylinder 19, applies simultaneously downwards, upwards pressure, thereby by upper squeezing 12 and lower squeezing 17 water is extruded from brown coal 16.
After squeezing was finished, entablature 10 rose to original position, and sill 18 also rises coal cinder 16 is discharged from mill room 15.
The another kind of configuration mode of hydraulic press as shown in Figure 2, hydraulic press comprises the entablature 32 that squeezing 31 is housed, middle cross beam 28 and lower squeezing 27.Before adding the brown coal coal charge, middle cross beam 28 is driven by hydraulic cylinder 30 and rises to a certain position and form mill room 29 with the lower squeezing 27 that is installed on the base 26.In expressing process, a upper squeezing that the entablature 32 that is driven by hydraulic cylinder 33 passes through to connect 31 is exerted pressure downwards, and the coal charge in the squeezing mill room 29 is until expressing process is finished.Middle cross beam 28 can keep static or slowly move down when one-way press, to realize the effect of two-way squeezing.After expressing process finished, entablature 32 rose, and middle cross beam 28 moves down under the driving of hydraulic cylinder 30, and coal cinder relatively pushes away under the effect in lower squeezing 27 and discharges from mill room 29.
Forming mill room, squeezing and discharge dehydration brown coal can be achieved by changing different crossbeam kinematic configuration.The kinematic configuration of crossbeam is not limited in above dual mode.
Mill room in the middle cross beam 14,28 can build up difformity, and such as rectangular column and cylindrical column, middle cross beam 14,28 also can comprise single mill room or many mill rooms, and mill room 15,29 can directly be located in the middle cross beam 14,28 or independent the existence.
Upper and lower crossbeam 10,18 or 32,26 connects permeable squeezing 12,17 or 27,31, thereby the water that squeezes out is discharged.Permeable squeezing head can comprise porous sintered filter 21, such as the porous sintered plate of stainless steel, and porous support plate 22 and drainage channel 23.Water is discharged by interface 20.The drainage channel 23 of squeeze water need not only to be confined to upper and lower squeezing head.In like manner, squeeze water can also pass through mill room 15,29 permeable sidewall is discharged.Permeable sintered plate is answered cleaned at regular intervals, for example: behind the machine each run or after operation a period of time, clean by interface 11 blowback compressed air, keep its water penetration.
Mechanical device 13 forward/the dehydration coal cinder that promotes to be discharged to side direction is to collecting bin 24, the brown coal after the dehydration can be for further processing, such as heated drying etc., coal dust extraction system 25 covers whole row's coal zone, prevents that coal dust is discharged in the surrounding environment.
The running step of preferred dehydration equipment described above comprises: reinforced, the squeezing of coal and the discharge of coal.Described step automatic cycle carries out, and realizes the continuous batch operation.The brown coal raw coal of pulverizing adds the mill room that is positioned at beam in hydraulic press by the closed feeding system.Hydraulic press can comprise three crossbeams: entablature, middle cross beam and sill.Apply mode and dehydration brown coal marker method according to pressure, comprise or the middle cross beam of placing mill room can keep static or movement.Entablature, sill can assemble the squeezing head individually or simultaneously, by Driven by Hydraulic Cylinder, mechanical pressure are put on brown coal in the mill room.The squeezing head comprises porous sintered filter, gripper shoe and drainage channel, and sintering porous disc/sidewall can be made of stainless steel, other metal material or other organic and inorganic material.The sintering filter is squeezing rear at every turn or is regularly cleaning by blowback compressed air.Middle cross beam and sill relatively move and the dehydration brown coal can be discharged from mill room, and perhaps middle cross beam moves down, sill keeps the fixed position, and perhaps middle cross beam keeps fixed position, sill to promote coal cinder upwards discharging.The mechanical type pusher promotes brown coal and enters collecting bin, and brown coal drop down onto conveyer subsequently, are transported to next step treatment process.
Preferably, brown coal dehydration equipment of the present utility model utilizes middle pressure can remove water content up to 50%, for example: water content be 70wt% raw coal after treatment water content can be down to 54wt%, brown coal after the dehydration can be again through further traditional heating is dry, the water content of 54wt% be down to be suitable for the desired level that transports, store or use.
According to preferred embodiment, the advantage of brown coal dewater unit of the present utility model or characteristics comprise that it possesses the ability of utilizing mechanical means to remove a large amount of moisture content from brown coal, and the energy that dehydration consumes only is the very fraction of traditional vaporization class dry run institute energy requirement.
Brown coal can utilize airtight feeding system to add mill room, and described system comprises telescopic movable feeder sleeve and airtight feed tank.Feed tank comprises distributor/agitator and remover, agitator is guaranteed evenly lasting feeding, remover guarantees to remove unnecessary coal charge, feed tank can cover whole mill room working face, when beginning to feed in raw material, feed tank slides to feed location, and when mill room was full of enough raw coal, feed tank slided backward back original position.
Hydraulic press is used for applying mechanical pressure to the brown coal of mill room.Hydraulic press mainly comprises can be by entablature, middle cross beam and the sill of Driven by Hydraulic Cylinder.The move mode that changes different crossbeams can be applied to power unidirectional or two-way squeezing, determines simultaneously the mode that the dehydration brown coal are discharged from mill room.For example: dehydration brown coal piece can be discharged from the process that relatively moves of middle cross beam and sill.
The dehydration brown coal are discharged with relevant coal dust extraction system cooperation by mechanical pusher ram, and when the dehydration brown coal were discharged, the coal dust that the coal dust extraction system can prevent was discharged in the surrounding environment.
Permeable filter/sidewall can carry out cleaned at regular intervals by blowback compressed air.
The technology that the utility model adopts can be discharged the moisture content in the brown coal with liquid form, therefore, for traditional vaporization class dry technology, the water that removes equivalent only consumes the very energy of fraction..Thus, the efficiency of upgrading low-order coal increases greatly, and the greenhouse gases that dry run produces also can significantly reduce.
Should be appreciated that, according to preferred embodiment, for the feature of the utility model device, be not included within protection scope of the present invention deviating from various modifications, change and/or the interpolation done under Spirit Essence of the present utility model and the principle.
Claims (14)
1. brown coal dehydration equipment is characterized in that it comprises:
Brown coal are delivered to the device of squeezing work station;
The squeezing work station is provided with at least one mill room and each mill room comprises at least one pervious barrier or permeable part;
Utilize airtight feeding system the charging of predetermined quantity brown coal to be delivered to the device of mill room;
Mechanical pressure is put on the device of brown coal charging in described at least one mill room;
In mill room, utilize mechanical pressure that moisture content is squeezed out brown coal, and make water pass the device of pervious barrier or permeable part;
Discharge mechanical pressure and the device of opening mill room;
Dehydration brown coal mechanical type is discharged the device of mill room to be used for further processing and to use;
The device that keeps the water penetration of described squeezing locular wall or permeable part by cleaning.
2. a kind of brown coal dehydration equipment according to claim 1 is characterized in that, described brown coal dehydration equipment also comprises the device of constructing mill room by the configuration that changes the hydraulic press crossbeam, and the parts of squeezing locular wall have been installed or determined to consist of to described crossbeam.
3. a kind of brown coal dehydration equipment according to claim 1 is characterized in that the device that applies mechanical pressure comprises hydraulic press, and wherein mill room has at least a wall can selectively move through hydraulic-driven, and mechanical pressure is put on brown coal in the mill room.
4. the described a kind of brown coal dehydration equipment of arbitrary claim in 3 according to claim 1 is characterized in that, relative two walls of mill room can move with respect to the squeezing locular wall of periphery.
5. a kind of brown coal dehydration equipment according to claim 4, it is characterized in that, discharge mechanical pressure and comprise the device that one of them moving end-wall is shifted out mill room with the device of opening mill room, thereby generation opening, another moving end-wall can further relatively move and enter mill room, and the brown coal that will dewater are discharged mill room by described opening.
6. the described a kind of brown coal dehydration equipment of arbitrary claim in 3 according to claim 1, it is characterized in that, at least one wall of mill room is pervious barrier, and the moisture content in the brown coal can appear from described squeezing locular wall after the pressure squeezing, thereby the moisture content that squeezes out is discharged mill room.
7. a kind of brown coal dehydration equipment according to claim 6 is characterized in that, each pervious barrier of mill room is made of the porous permeable plate.
8. a kind of brown coal dehydration equipment according to claim 7 is characterized in that, described porous permeable plate is the sintered stainless steel porous plate.
9. the described a kind of brown coal dehydration equipment of arbitrary claim in 3 according to claim 1 is characterized in that described mill room is the cylindricality geometry.
10. a kind of brown coal dehydration equipment according to claim 9 is characterized in that, described cylindricality geometry is the geometry of rectangular column or cylindrical column.
11. the described a kind of brown coal dehydration equipment of arbitrary claim in 3 according to claim 1, it is characterized in that, described equipment also comprises a plurality of mill rooms, but its run-in synchronism or have each other the periodic operation of phase difference ground, to obtain more continuous dehydration brown coal output.
12. the described a kind of brown coal dehydration equipment of arbitrary claim in 3 according to claim 1, it is characterized in that, the brown coal feeding device comprises an airtight raw coal feed tank, it is for delivery of the brown coal of predetermined quantity, airtight feed tank can optionally be advanced to the squeezing work station, and coal charge is added mill room and do not produce a large amount of coal dusts.
13. a kind of brown coal dehydration equipment according to claim 12 is characterized in that, airtight raw coal feed tank inside can arrange distributor or agitator, is used for coal charge is uniformly distributed to mill room.
14. the described a kind of brown coal dehydration equipment of arbitrary claim in 3 according to claim 1, it is characterized in that, dehydration brown coal machinery discharge device comprises a pusher, brown coal forward direction or side direction push away the squeezing work station for dewatering, described device also comprises the coal dust extraction device, it pushes away in the process of squeezing work station at the pusher brown coal that will dewater, and is used for the coal dust of extracting dehydration brown coal periphery, thereby farthest reduces the coal dust that is discharged in the surrounding environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220192620 CN202792820U (en) | 2012-04-28 | 2012-04-28 | Novel brown coal dehydration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220192620 CN202792820U (en) | 2012-04-28 | 2012-04-28 | Novel brown coal dehydration device |
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| CN202792820U true CN202792820U (en) | 2013-03-13 |
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| CN 201220192620 Expired - Fee Related CN202792820U (en) | 2012-04-28 | 2012-04-28 | Novel brown coal dehydration device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206843A (en) * | 2013-04-26 | 2013-07-17 | 上海第二工业大学 | Viscous or non-viscous high-water-content wet material hot-pressing drying dehydration equipment |
| CN103358582A (en) * | 2013-07-05 | 2013-10-23 | 郑州市鼎力干燥设备有限公司 | Brown coal extrusion dehydration forming machine |
| CN110411162A (en) * | 2019-08-01 | 2019-11-05 | 金华表征电子科技有限公司 | A kind of mud coal physical dryness dehydration device |
-
2012
- 2012-04-28 CN CN 201220192620 patent/CN202792820U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206843A (en) * | 2013-04-26 | 2013-07-17 | 上海第二工业大学 | Viscous or non-viscous high-water-content wet material hot-pressing drying dehydration equipment |
| CN103358582A (en) * | 2013-07-05 | 2013-10-23 | 郑州市鼎力干燥设备有限公司 | Brown coal extrusion dehydration forming machine |
| CN110411162A (en) * | 2019-08-01 | 2019-11-05 | 金华表征电子科技有限公司 | A kind of mud coal physical dryness dehydration device |
| CN110411162B (en) * | 2019-08-01 | 2020-12-18 | 浙江而乐干燥设备有限公司 | Physical drying and dewatering device for peat |
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