CN203620770U - Gas-liquid-solid three-phase fluidized bed sorting machine - Google Patents

Gas-liquid-solid three-phase fluidized bed sorting machine Download PDF

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Publication number
CN203620770U
CN203620770U CN201320805219.XU CN201320805219U CN203620770U CN 203620770 U CN203620770 U CN 203620770U CN 201320805219 U CN201320805219 U CN 201320805219U CN 203620770 U CN203620770 U CN 203620770U
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China
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sorting
staving
fluid distribution
underflow
density
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Expired - Fee Related
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CN201320805219.XU
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Chinese (zh)
Inventor
谢广元
倪超
沙杰
彭耀丽
吴玲
刘博�
许光前
梁龙
谭佳琨
吴成舟
种亚岗
王文龙
孙玉金
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Abstract

A gas-liquid-solid three-phase fluidized bed sorting machine comprises a sorting barrel body, a central feeding barrel, a tapered separating disc, a clean coal overflow collecting groove, a bubble generator, a fluid distributing main-branch pipe, buffering and discharging fluid distributing plates, a bed layer online density meter, programmable density controllers, an automatic underflow discharging control executor and an underflow discharging valve. A the technical scheme of the sorting machine is that water flows through the bubble generator and a plurality of nodes of the fluid distributing main-branch pipe and then enters the sorting barrel body; with an action of the buffering and discharging fluid distributing plates, two phases of even and stable gas-liquid fluid rising is formed in the sorting barrel body; material entering the sorting barrel body is separated according to discrepancy of density and surface properties, so sorting precision of material based on density is improved and loss due to coarse grain with low density entering the underflow and deficiencies of clean coal due to pollution of fine slit with high density are effectively prevented; the gas-liquid-solid three phase fluidized bed sorting machine has simple structure and method; lower sorting limit is provided; wide particle processing range is achieved; and the sorting machine has high sorting precision, strong reliability and wide applicability.

Description

Gas-liquid-solid three-phase fluid bed separator
Technical field
The utility model relates to a kind of gas-liquid-solid three-phase fluid bed separator, is particularly useful for the desulfurization and deashing of coarse slime in wet coal preparation technique.
Background technology
Because the granularity of coarse slime (according to GB GB/T7186-2008, referring generally to 2mm~0.25mm coal grain) is near gravity treatment and the effective sorting granularity of flotation boundary (being generally 0.5mm), gravity treatment and flotation are all poor to its separating effect.At present, this part coal slime generally adopts minor diameter dense medium cyclone, spiral and the sorting of liquid-solid fluid bed separation machine.All there is obvious deficiency in minor diameter dense medium cyclone and spiral fine coal, and liquid-solid fluid bed separation machine is low and controllable because having separating density, the advantages such as pan feeding concentration requirement is not high, and power consumption is little, become at present effectively one of equipment of fine coal.
Tradition liquid-solid fluid bed separation machine separating mechanism: utilize ascending fluid current to make the abundant fluidization of particle, form the concentrated phase fluid bed with certain density, particle is according to the layering of hindered falling speed difference: low-density particles floating, becomes floating thing; High density granular sinks, and becomes hypostasis.Because hindered falling speed is relevant with granularity, the density of particle, so in order to realize by density stratification better, traditional liquid-solid fluid bed separation machine is conventionally stricter to the granularity requirements of pan feeding.But in actual assorting room, because the classification efficiency of classifying equipoment is not high, actual sorting particle size range often exceeds the granularity requirements of liquid-solid fluid bed separation machine, and granularity is obvious on the impact of separating effect.Be mainly reflected in high density fine grained and enter pollution load of overflow cleaned coal, low-density coarse granule enters underflow becomes tail coal, causes cleans ash high, and clean coal recovery is low, and sharpness of separation is low, and separating effect is poor.All there are the problems referred to above in the patent (CN201052472Y, CN102441479A) of having announced.
Utility model content
Technical problem: the purpose of this utility model is to overcome oneself to have the weak point in technology, provides that a kind of structure and method are simple, the gas-liquid-solid three-phase fluid bed separator of simple operation, processing particle size range is wide, sharpness of separation is high, reliability is high coarse slime efficient separation.
Technical scheme: gas-liquid-solid three-phase fluid bed separator of the present utility model, comprise sorting staving, be located at the center feed barrel on sorting staving top, feed barrel exit, center is provided with taper material separating disc, the top of sorting staving is set with cleaned coal overflow feeder, in sorting staving, be provided with the densitometer being connected with density controller able to programme, underflow discharge automatic control actuator, underflow discharge valve, connect the connecting rod of underflow discharge automatic control actuator and underflow discharge valve, with the underflow discharge pipe of underflow discharge valve wedging and the ore drawing valve of sorting staving bottom, described sorting staving bottom is provided with fluid distribution supervisor, fluid distributes to be responsible for and is provided with bubble generator, fluid is connected with and surrounds the sorting staving fluid distribution rings arm of a week on distributing and being responsible for, fluid distribution rings arm is provided with multiple fluid distribution allotment pipes that are connected with sorting staving bottom, the inside of sorting staving is provided with multilayer buffer fluid distribution grid higher than the position of fluid distribution supervisor plane, the top of buffer fluid distribution grid is provided with the discharge fluid distribution plate of back taper, the angle of its conical surface and horizontal direction regulates according to underflow discharge velocity, and the vertex of a cone of discharge fluid distribution plate is connected with the underflow discharge pipe that is positioned at sorting staving lower central, the bottom of described cleaned coal overflow feeder is being in tilted layout that center is high, surrounding is low, and is divided into multiple material discharge regions, and the lowermost end of each material discharge region is provided with an overflow drainage conduit, the bottom of described sorting staving is being in tilted layout that center is high, surrounding is low, and is divided into multiple material discharge regions, and each material discharge region is provided with a pipeline by draw valve gate control.
Described bubble generator is Venturi tube bubble generator; Multiple material discharge regions that described cleaned coal overflow feeder is divided into are 2-4; Multiple material discharge regions that the bottom of described sorting staving is divided into are 2-4.
Beneficial effect: owing to having adopted technique scheme, the utility model compared with prior art tool has the following advantages:
1. gravity treatment combines with flotation, improves the sharpness of separation of size fractionated material, especially reduces loss and the pollution of the thin mud of high density to cleaned coal of low-density coarse grain.For low-density coarse grain, first float bubble and ascending current acting in conjunction reduce the sinking speed of coarse grain, have increased the sorting time of coarse grain, improve the rate of recovery; Secondly bubble and coarse grain can form gas-solid floc sedimentation, increase the buoyancy of particle, reduce the effective density of particle simultaneously, reduce the loss that end density coarse grain enters underflow.For particulate, first press the precision of surface nature difference sorting far above pressing density variation sorting, therefore gravity treatment is combined with flotation and can be effectively reduced the pollution of the thin mud of high density to cleaned coal; Secondly, in gas-liquid-solid three-phase fluid bed assorting room, accompany alveolate generation, merger, floating and vanish, increase the turbulence intensity of local ore pulp, improve the shatter value of bed, make the abundant fluidization of bed, reduce the reunion of particle, further reduced the thin mud of high density by mixing pollution cleaned coal, caused cleans ash higher.
2. utilize particle surface nature difference, increase the difference of density between particle, improve the sharpness of separation of particle.Low-density particles hydrophobicity is good, and easy and bubble adheres to the gas-solid floc sedimentation of formation, and its averag density is lower than grain density; High density granular hydrophobicity is poor, is difficult for adhering to bubble, thereby increases the density difference of low-density particles and high density granular, improves sharpness of separation.
3. the generation of bubble, merger, floating and the loose of promotion bed of vanishing, can under lower ascending current speed, form gas-liquid-solid three-phase fluid bed layer, avoid more high density fine grained and chats particle under large ascending current speed to enter pollution load of overflow cleaned coal, realize the high accuracy sorting under low-density, significantly reduce cleans ash, improve the quality of products.
4. gas-liquid-solid three-phase fluid distribution apparatus adopts bubble generator, fluid distributes and is responsible for, encircles the form that arm, allotment pipe and buffering, discharge multi-layered fluid distribution grid (perforate direction straight up) combine, both guaranteed to form even, stable rising liquid-solid two-phase fluid in sorting staving, make density underflow product keep fluidized state simultaneously, prevent excessive buildup and the obstruction of underflow product, be conducive to collection and the discharge of underflow product.
5. structure and method are simple, processing ease, and lower limit of separation is low, processes particle size range wide, and sharpness of separation is high, and reliability is high, has applicability widely.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of cleaned coal overflow feeder of the present utility model;
Fig. 3 is fluid distribution line arrangement schematic diagram of the present utility model;
Fig. 4 is the structural representation of buffer fluid distribution grid of the present utility model.
In figure: 1-cleaned coal overflow feeder, 2-center feed barrel, 3-taper material separating disc, 4-sorting staving, 5-discharge fluid distribution plate, 6-buffer fluid distribution grid, 7-bubble generator, 8-fluid distributes and is responsible for, 9-density controller able to programme, 10-underflow discharge automatic control actuator, 11-overflow drainage conduit, 12-on-line densimeter, 13-connecting rod, 14-underflow discharge pipe, 15-underflow discharge valve, 16-ore drawing valve.8-1-fluid distribution rings arm, 8-2-fluid distribution allotment pipe.
The specific embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is further described:
As shown in Figure 1, gas-liquid-solid three-phase fluid bed separator of the present utility model, is mainly made up of sorting staving 4, center feed barrel 2, taper material separating disc 3, cleaned coal overflow feeder 1, overflow drainage conduit 11, fluid distribution supervisor 8, bubble generator 7, buffer fluid distribution grid 6, discharge fluid distribution plate 5, on-line densimeter 12, density controller able to programme 9, underflow discharge automatic control actuator 10, connecting rod 13, underflow discharge valve 15, underflow discharge pipe 14 and ore drawing valve 16.The cross section of sorting staving 4 is circle or rectangle, is circular in Fig. 1; The top outer of sorting staving 4 is set with cleaned coal overflow feeder 1, the cross section of cleaned coal overflow feeder 1 is circle or rectangle, Figure 2 shows that rectangle, the bottom of cleaned coal overflow feeder 1 is being in tilted layout that center is high, surrounding is low, and be divided into multiple material discharge regions, the lowermost end of each material discharge region is provided with an overflow drainage conduit 11, its objective is raising discharge velocity, and in Fig. 2, cleaned coal overflow feeder 1 is evenly divided into two material discharge regions.Center feed barrel 2 is located in sorting staving 4, and its top center is concordant with the top center of sorting staving 4, and the outlet at bottom place of center feed barrel 2 is provided with taper material separating disc 3.
Shown in Fig. 3, the fluid distribution supervisor 8 of bubble generator 7 is housed and surrounds the sorting staving fluid distribution rings arm 8-1 of 4 one weeks and be connected, on fluid distribution rings arm 8-1, be evenly distributed with multiple angles that wait and arrange the fluid distribution allotment pipe 8-2 being connected with the bottom of sorting staving 4, fluid distribution supervisor 8, fluid distribution rings arm 8-1 and fluid distribution allotment pipe 8-2 are positioned at same plane, and in Fig. 3, fluid distribution allotment pipe 8-2 is 8; Bubble generator 7 is preferably Venturi tube bubble generator, the water inlet current of high-speed motion produce negative pressure air amount from entrance A by bubble generator 7, make fluid form bubble, as required, by bubble generator 7 air amount time, add a small amount of floating agent, to improve the character of bubble and particle surface; The bottom of sorting staving 4 is provided with multilayer buffer fluid distribution grid 6 higher than the position of fluid distribution supervisor 8 planes, in Fig. 1, be 2 layers, the top of buffer fluid distribution grid 6 is provided with the discharge fluid distribution plate 5 of back taper, and the angle of its conical surface and horizontal direction can regulate according to underflow discharge velocity; Shown in Fig. 4, buffer fluid distribution grid 6 and discharge fluid distribution plate 5 all have the distribution hole of vertical direction.The vertex of a cone of discharge fluid distribution plate 5 is connected with the underflow discharge pipe 14 that is positioned at sorting staving 4 lower central, and underflow discharge pipe 14 runs through all buffer fluid distribution grids 6 the underflow discharge valve 15 phase wedgings with sorting staving 4 bottom outside.The valve body of underflow discharge valve 15 is taper, connecting rod 13 by sorting staving 4 interior position of center line is connected with outside underflow discharge automatic control actuator 10, underflow discharge automatic control actuator 10 is connected with outside density controller 9 able to programme, and density controller 9 able to programme is connected with on-line densimeter 12 in sorting staving 4; The density of on-line densimeter 12 Real-Time Monitoring sorting beds, after signal conversion, pass to density controller 9 able to programme, density controller 9 able to programme is controlled stream discharge automatic control actuator 10 and is pulled connecting rod 13 to complete the switching of underflow discharge valve 15, realizes the automatic control of underflow discharge; The bottom of sorting staving 4 is being in tilted layout that center is high, surrounding is low, and be divided into multiple material discharge regions, each material discharge region is provided with a pipeline of being controlled by ore drawing valve 16, to stop and clear up the material in sorting staving when fault, in Fig. 1, ore drawing valve 16 is 2.

Claims (4)

1. a gas-liquid-solid three-phase fluid bed separator, comprise sorting staving (4), be located at the center feed barrel (2) on sorting staving (4) top, center feed barrel (2) exit is provided with taper material separating disc (3), the top of sorting staving (4) is set with cleaned coal overflow feeder (1), in sorting staving (4), be provided with the densitometer (12) being connected with density controller able to programme (9), underflow discharge automatic control actuator (10), underflow discharge valve (15), connect the connecting rod (13) of underflow discharge automatic control actuator (10) and underflow discharge valve (15), with the underflow discharge pipe (14) of underflow discharge valve (15) wedging and the ore drawing valve (16) of sorting staving (4) bottom, it is characterized in that: described sorting staving (4) bottom is provided with fluid distribution supervisor (8), fluid distribution supervisor (8) is provided with bubble generator (7), fluid distributes to be responsible on (8) and is connected with and surrounds the sorting staving fluid distribution rings arm (8-1) of (4) weeks, fluid distribution rings arm (8-1) is provided with multiple fluid distribution allotment pipes (8-2) that are connected with sorting staving (4) bottom, the inside of sorting staving (4) is provided with multilayer buffer fluid distribution grid (6) higher than the position of fluid distribution supervisor (8) plane, the top of buffer fluid distribution grid (6) is provided with the discharge fluid distribution plate (5) of back taper, the angle of its conical surface and horizontal direction regulates according to underflow discharge velocity, and the vertex of a cone of discharge fluid distribution plate (5) is connected with the underflow discharge pipe (14) that is positioned at sorting staving (4) lower central, the bottom of described cleaned coal overflow feeder (1) is being in tilted layout that center is high, surrounding is low, and is divided into multiple material discharge regions, and the lowermost end of each material discharge region is provided with an overflow drainage conduit (11), the bottom of described sorting staving (4) is being in tilted layout that center is high, surrounding is low, and is divided into multiple material discharge regions, and each material discharge region is provided with a pipeline of being controlled by ore drawing valve (16).
2. gas-liquid-solid three-phase fluid bed separator according to claim 1, is characterized in that: described bubble generator (7) is Venturi tube bubble generator.
3. gas-liquid-solid three-phase fluid bed separator according to claim 1, is characterized in that: multiple material discharge regions that described cleaned coal overflow feeder (1) is divided into are 2-4.
4. gas-liquid-solid three-phase fluid bed separator according to claim 1, is characterized in that: multiple material discharge regions that the bottom of described sorting staving (4) is divided into are 2-4.
CN201320805219.XU 2013-12-09 2013-12-09 Gas-liquid-solid three-phase fluidized bed sorting machine Expired - Fee Related CN203620770U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103657839A (en) * 2013-12-09 2014-03-26 中国矿业大学 Gas-liquid-solid three-phase fluidized bed sorting machine and sorting method thereof
CN106076598A (en) * 2016-07-22 2016-11-09 邹铁军 A kind of scraper-type ultrasound wave deslimer
CN106694204A (en) * 2017-01-13 2017-05-24 中国矿业大学 Device for separation and overflow of coarse coal slime and slime removal and classification of clean coal slime through liquid-solid fluidized bed
CN108722659A (en) * 2018-06-14 2018-11-02 中国恩菲工程技术有限公司 Finely-divided metal mine is classified and roughing integrated apparatus
CN109652113A (en) * 2017-10-10 2019-04-19 中国石油天然气股份有限公司 Oil-gas-water three-phase separation
CN113058753A (en) * 2021-03-30 2021-07-02 中国矿业大学 Underground coal liquid-solid fluidization sorting device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103657839A (en) * 2013-12-09 2014-03-26 中国矿业大学 Gas-liquid-solid three-phase fluidized bed sorting machine and sorting method thereof
CN103657839B (en) * 2013-12-09 2015-12-09 中国矿业大学 Gas-liquid-solid three-phase fluid bed separator and method for separating thereof
CN106076598A (en) * 2016-07-22 2016-11-09 邹铁军 A kind of scraper-type ultrasound wave deslimer
CN106694204A (en) * 2017-01-13 2017-05-24 中国矿业大学 Device for separation and overflow of coarse coal slime and slime removal and classification of clean coal slime through liquid-solid fluidized bed
CN109652113A (en) * 2017-10-10 2019-04-19 中国石油天然气股份有限公司 Oil-gas-water three-phase separation
CN108722659A (en) * 2018-06-14 2018-11-02 中国恩菲工程技术有限公司 Finely-divided metal mine is classified and roughing integrated apparatus
CN113058753A (en) * 2021-03-30 2021-07-02 中国矿业大学 Underground coal liquid-solid fluidization sorting device

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Granted publication date: 20140604

Termination date: 20161209