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WO2014161253A1 - 一种振动流化床干燥分选一体机 - Google Patents

一种振动流化床干燥分选一体机 Download PDF

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Publication number
WO2014161253A1
WO2014161253A1 PCT/CN2013/080193 CN2013080193W WO2014161253A1 WO 2014161253 A1 WO2014161253 A1 WO 2014161253A1 CN 2013080193 W CN2013080193 W CN 2013080193W WO 2014161253 A1 WO2014161253 A1 WO 2014161253A1
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WO
WIPO (PCT)
Prior art keywords
bed
air
sorting
air distribution
coal
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.)
Ceased
Application number
PCT/CN2013/080193
Other languages
English (en)
French (fr)
Inventor
赵跃民
杨旭亮
赵鹏飞
骆振福
陈增强
段晨龙
宋树磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China University of Mining and Technology CUMT
China University of Mining and Technology Beijing CUMTB
Original Assignee
China University of Mining and Technology CUMT
China University of Mining and Technology Beijing CUMTB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT, China University of Mining and Technology Beijing CUMTB filed Critical China University of Mining and Technology CUMT
Priority to AU2013385357A priority Critical patent/AU2013385357B2/en
Priority to CA2907780A priority patent/CA2907780C/en
Priority to US14/780,688 priority patent/US9964357B2/en
Publication of WO2014161253A1 publication Critical patent/WO2014161253A1/zh
Priority to ZA2015/07288A priority patent/ZA201507288B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
    • F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
    • F26B3/092—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating
    • F26B3/0923—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed agitating the fluidised bed, e.g. by vibrating or pulsating by mechanical means, e.g. vibrated plate, stirrer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B4/00—Separating by pneumatic tables or by pneumatic jigs
    • B03B4/02—Separating by pneumatic tables or by pneumatic jigs using swinging or shaking tables

Definitions

  • the invention relates to a coal upgrading processing device, in particular to a method suitable for drying and sorting brown coal, low rank coal and other moist low quality coal in a vibrating fluidized bed, thereby realizing dry deashing and dehydration of coal. device. Background technique:
  • Bonding agglomeration occurs, which seriously deteriorates the fluidization performance of the fluidized bed, so that low-quality coal containing high moisture cannot be directly sorted, and even if a pre-drying process is introduced, low-quality coal, especially lignite, is in the drying process. Large particles are cracked, and a large amount of coal powder is formed. When it is mixed into the weighted material, not only the separation cannot be achieved by itself, but also the density stability of the sorted bed layer is seriously deteriorated, and the sorting effect is deteriorated. Summary of the invention:
  • the object of the present invention is to overcome the deficiencies in the prior art, and propose a synergistic introduction of introducing high-temperature hot air into a vibrating fluidized bed, integrating drying and sorting processes, thereby completing low-quality coal deashing and dewatering.
  • Qualitative, vibrating fluidized bed drying and sorting machine with simple structure, stable operation, high reliability, low sorting cost, high efficiency and environmental protection.
  • the vibrating fluidized bed drying and sorting machine of the present invention comprises a front frame, a rear frame, a sorting bed, an impeller feeder disposed at an upper end of the front end of the sorting bed, and a tail end of the sorting bed is provided
  • the meteorite impeller discharge machine and the clean coal impeller discharge machine, the dust removal air hood is arranged on the upper part of the separation bed, the air distribution room is arranged on the bottom, and the air distribution board is arranged on the upper part of the air distribution room, the front frame and the rear
  • the frame and the sorting bed are coupled by a spring and a spring support;
  • the bottom of the rear frame is provided with a hydraulic cylinder that realizes an inclination of the sorting bed within a range of -10° to +10°;
  • the lower part of the feeder is provided with a feeding and dispersing device fixedly coupled to the impeller feeder in the sorting bed;
  • the feeding and dispersing device comprises a chute, and the chute is arranged with three rows
  • the outer surfaces of the dust-collecting air hood and the air distribution chamber are respectively sprayed with 2-3 mm thick thermal insulation coating, and the lower part of the front end of the sorting bed is provided.
  • the air distribution plate is composed of upper and lower porous metal splints and clips
  • the asbestos fiber filter cloth is arranged in the porous metal splint
  • the bottom of the two air distribution chambers is respectively provided with a gas disperser, and the gas disperser is connected with the hot air pipe sprayed with the heat insulation coating, the gas dispersion
  • the device is composed of a baffle and a current limiting plate; a hot air pipe connected to the gas disperser is provided with a flow meter and a regulating valve for controlling the air volume entering the air distribution chamber.
  • the front part of the clean coal impeller discharge machine is provided with a baffle that can move up and down; the inlet of the hot air pipe is provided with a variable frequency constant voltage controller that realizes an error of the air inlet volume of the air distribution chamber within a range of ⁇ 4%.
  • the present invention utilizes hot air to fluidize the moist coal in the vibrating fluidized bed, and the heat and mass of the high temperature gas and the moist coal particles are generated, and the water in the coal is taken out of the fluidized bed by the fluidizing gas in the form of water vapor, thereby Realize coal precipitation and quality.
  • the coal particles are fluidized under the synergistic action of gas flow and vibration, and the bubble behavior Interference settlement is carried out in the created dilute phase zone, and finally the high-density vermiculite is lowered to the bottom of the bed, and the low-density clean coal is floated up to the upper part of the bed, and then the discharge device is used for layered collection to obtain two products of clean coal and vermiculite.
  • Interference settlement occurs inside the fluidized bed, the lower part of the high-density meteorite sinking bed, the low-density clean coal floats up to the upper part of the bed, and achieves efficient stratification on a certain sorting length, passing the vermiculite at the end of the sorting bed and
  • the clean coal discharge device is separately discharged to obtain vermiculite and clean coal products, and the de-ashing and upgrading of low-quality coal is realized.
  • the conveying speed of the sorting material in the sorting bed can be achieved by adjusting the vibration direction angle and the bed inclination angle.
  • the entire dry sorting process does not use aggravating quality, and the processing cost is low.
  • the sorting machine can sort brown coal, low rank coal and other moist coal at the same time, remove high ash vermiculite, realize deashing and dehydration of coal, thereby improving coal quality and achieving efficient and clean utilization of low quality coal, especially suitable for Processing and upgrading of low-quality coal with high water content such as lignite and low-rank coal.
  • the utility model has the advantages of simple structure, stable operation, high reliability and wide practicality.
  • Figure 1 is a schematic front view of the present invention
  • Figure 2 is a schematic view of the right side view of the present invention.
  • FIG. 3 is a schematic structural view of the feed disperser
  • Figure 4 is a top plan view of Figure 3.
  • the vibrating fluidized bed drying and sorting machine of the present invention mainly comprises a sorting bed 6, a front frame 10, a rear frame 12, an air chamber 3, and an eccentric shaft.
  • the vibrator 9, the vermiculite impeller discharger 14, and the clean coal impeller discharger 8 are constructed.
  • An upper end of the sorting bed 6 is provided with an impeller feeder 1 , a tail end of the sorting bed 6 is provided with a vermiculite impeller discharge machine 14 and a clean coal impeller discharge machine 8 , and the upper part of the sorting bed 6 is provided with dust removal
  • the air hood 4 is provided with a wind chamber 3 at the bottom, and a wind cloth 15 is disposed at the upper portion of the air chamber 3, and the front frame 10 and the rear frame 12 and the sorting bed 6 pass through the spring 17 and the spring support 16
  • the bottom of the rear frame 12 is provided with a hydraulic cylinder 13 which realizes the inclination of the sorting bed 6 in the range of -10° to +10°; the height of the rear frame 12 is adjusted by the hydraulic cylinder 13 to realize the points.
  • the inclination angle of the bed 6 is adjustable within a range of -10° to +10°; the lower portion of the impeller feeder 1 is provided with a material dispersing device 2 fixed on the sorting bed 6; the feeding and dispersing device 2 is flexibly coupled with the impeller feeder 1 and rigidly coupled with the sorting bed 6; the feed dispersing device 2 includes a chute 20, and the chute 20 is provided with three rows of steel rods 21 which are criss-crossed in a crisscross pattern, and the crushing is due to the impeller feeding.
  • the bulk material formed by the extrusion of the impeller of the machine 1; the dust-reducing air hood 4 and the air distribution chamber 3 at the top of the top of the sorting bed 6 are two, and the outer surfaces of the dust-collecting air hood 4 and the air distribution chamber 3 Do not sprayed with 2-3 mm thick thermal barrier coating, the tip end of the sorting beds 6 a separate eccentric shaft exciter 9 is provided; the air distribution plate 15 is composed of an upper and lower porous metal splint and an asbestos fiber filter cloth interposed in the porous metal splint; the bottom portions of the two air distribution chambers 3 respectively a gas disperser 5 composed of a baffle and a current limiting plate is provided to promote uniform dispersion of hot air throughout the cross section of the air distribution chamber; the gas disperser 5 is connected to the hot air duct 19 sprayed with the thermal barrier coating, The inlet of the hot air duct 19 is provided with a variable frequency constant voltage controller for realizing an air volume error of the air distribution chamber 3 within a range of
  • the hot air pipe 19 connected to the gas disperser 5 is provided with a flow meter 11 and a regulating valve 18 for controlling the amount of air entering the air distribution chamber 3, so that the gas velocity can be independently adjusted in sections in the sorting length direction.
  • the front part of the clean coal impeller discharge machine 8 is provided with a baffle 7 movable up and down, and the baffle ⁇ is threadedly coupled to the sorting bed 6, and the baffle 7 is placed in the fixed strip groove by adjusting the bolt Move, adjust the height of the block.
  • the high-temperature hot air in the hot air pipe 19 enters the air distribution chamber 3 through the regulating valve 18 and the flow meter 11, passes through the air diffuser 5 and enters the sorting bed 6 uniformly through the gas diffuser 5, and the material is passed through at the same time.
  • the impeller feeder 1 enters the feed dispersion device 2, and the bulk feed enters the sorting bed 6, and fluidization is achieved by the synergy of vibration and high temperature hot air.
  • the feed particles and high-temperature hot air achieve high-efficiency heat and mass transfer, and the water is continuously taken out of the sorting bed by the ascending air in the form of water vapor, enters the dust collector, collects dust, and discharges the clean gas containing waste heat for recycling. .
  • the material layering based on the interference sedimentation process is realized in the vibrating fluidized bed, the meteorite sinks, the clean coal floats, and the vermiculite impeller discharge machine 14 and the fine coal impeller discharge machine pass through the tail end of the sorting bed. 8 separate discharge, thereby completing the deashing process and achieving sorting.
  • the quality and quantity of the clean coal product can be controlled by the baffle 7 at the front of the clean coal impeller discharger 8.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

一种振动流化床干燥分选一体机，包括前机架（10）、后机架（12）、分选床（6）、设在分选床（6）前端上部的叶轮给料机（1），分选床（6）的尾端设有矸石叶轮排料机（14）和精煤叶轮排料机（8），分选床（6）的上部设有除尘引风罩（4），底部设有布风室（3），布风室（3）上部设有布风板（15），前机架（10）和后机架（12）与分选床（6）通过弹簧（17）和弹簧支座（16）联接；后机架（12）底部设有液压缸（13）；叶轮给料机（1）下部设有入料分散装置（2）；分选床（6）顶底部的除尘引风罩（4）和布风室（3）各为两个，除尘引风罩（4）和布风室（3）的外表面上分别喷涂有隔热涂层，分选床（6）的前端下部设有分离式偏心轴激振器（9）；布风板（15）由上下多孔金属夹板和夹装在多孔金属夹板内的石棉纤维滤布组成；布风室（3）底部分别设有气体分散器（5），气体分散器（5）与喷涂有隔热涂层的热风管（19）相连。利用高温热风来流化振动流化床中的潮湿煤炭，高温气体和潮湿煤炭颗粒发生传热传质，煤炭中水分以水蒸汽的形态被流化气体带出流化床，在干燥过程中，煤炭颗粒在气流和振动协同作用下实现流化。振动流化床干燥分选一体机结构简单，运行稳定，可靠性高。

Description

一种振动流化床干燥分选一体机
技术领域：
本发明涉及一种煤炭提质加工设备， 尤其是一种适用于褐煤、 低阶煤以及其它潮湿 低品质煤在振动流化床中同时进行干燥和分选， 进而实现煤炭干法脱灰脱水的设备。 背景技术：
目前以褐煤、 低阶煤为主的低品质煤储量很大， 具有含水量高、 热值低等特点， 故 其用途收到很大限制， 且利用过程中效率低、 污染大， 与我国日益严格的节能环保要求 相悖， 亟需发展高效可靠的低品质煤提质加工技术和设备。 目前， 空气重介质流化床和 外加力场空气重介质流化床可以实现具有低水分煤炭的高效分选， 但由于所采用的加重 质粒度很小， 在较多外来水分影响下加重质颗粒发生粘结团聚， 进而严重恶化流化床的 流化性能， 因而无法直接对含高水分的低品质煤炭进行分选， 并且， 即使引入预先干燥 工艺环节， 低品质煤尤其是褐煤在干燥过程中大颗粒崩裂， 形成大量煤粉， 其混入到加 重质中不仅自身无法实现分选， 且严重恶化分选床层的密度稳定性， 恶化分选效果。 发明内容：
技术问题： 本发明的目的是克服已有技术中的不足之处， 提出一种将高温热风引入 到振动流化床中， 集成干燥和分选过程， 从而完成低品质煤脱灰脱水的协同提质， 具有 结构简单、 运行稳定、 可靠性高、 分选成本低、 高效环保等特点的振动流化床干燥分选 一体机。
技术方案： 本发明的振动流化床干燥分选一体机， 包括前机架、 后机架、 分选床、 设在分选床前端上部的叶轮给料机， 分选床的尾端设有矸石叶轮排料机和精煤叶轮排料 机， 分选床的上部设有除尘引风罩， 底部设有布风室， 布风室上部设有布风板， 所述的 前机架和后机架与分选床通过弹簧和弹簧支座联接； 所述的后机架底部设有实现分选床 的倾角在 -10°~+10°的范围内可调的液压缸； 所述的叶轮给料机下部设有固定在分选床上 与叶轮给料机柔性联接的入料分散装置； 所述的入料分散装置包括溜槽， 溜槽内间隔设 有纵横交错的三排钢棒； 所述分选床顶底部的除尘引风罩和布风室各为两个， 除尘引风 罩和布风室的外表面上分别喷涂有 2-3 mm厚的隔热涂层，分选床的前端下部设有分离式 偏心轴激振器； 所述的布风板由上下多孔金属夹板和夹装在多孔金属夹板内的石棉纤维 滤布组成； 所述的两个布风室底部分别设有气体分散器， 气体分散器与喷涂有隔热涂层 的热风管相连， 所述的气体分散器由导流板和限流板组成； 与气体分散器相连的热风管 上设有流量计和控制进入布风室风量的调节阀。
所述的精煤叶轮排料机前部设有可上下移动的挡板； 所述的热风管入口处设有实现 布风室进风量误差在 ±4%范围内的变频恒压控制器。
有益效果： 本发明利用热风来流化振动流化床中的潮湿煤炭， 高温气体和潮湿煤炭 颗粒发生传热传质， 煤炭中水分以水蒸汽的形态被流化气体带出流化床， 从而实现煤炭 降水提质。 在干燥过程中， 煤炭颗粒在气流和振动协同作用下实现流化， 并在气泡行为 创造的稀相区内进行干扰沉降， 最终实现高密度矸石下降到床层底部， 低密度精煤上浮 至床层上部， 然后采用排料装置进行分层收集得到精煤和矸石两种产品。 利用热风来流 化振动流化床中含水量较高的低品质煤， 在适宜的振动条件和操作气速下分选入料实现 均匀稳定流化， 流化床内部高温气流和高水分煤炭颗粒发生高效的传热传质， 液态水逐 渐变成水蒸气， 随着上升气流进入到除尘器中， 从而实现分选入料水分的脱除， 同时， 分选入料在振动和气流双重作用下在流化床内部发生干扰沉降， 高密度的矸石下沉床层 下部， 低密度的精煤上浮至床层上部， 并且在一定的分选长度上实现高效分层， 通过分 选床尾端的矸石和精煤排料装置分别排出， 得到矸石和精煤产品， 实现低品质煤的脱灰 提质。 分选物料在分选床中的输送速度可以通过调节振动方向角和床体倾角两种方式实 现。 整个干燥分选过程不采用加重质， 加工成本低。 该分选机能够实现褐煤、 低阶煤及 其它潮湿煤炭干燥的同时进行分选， 排除高灰矸石， 实现煤炭的脱灰脱水， 从而提高煤 质， 实现低品质煤炭的高效洁净利用， 尤其适合褐煤、 低阶煤等含水量较高的低品质煤 的加工提质。 其结构简单， 运行稳定， 可靠性高， 具有广泛的实用性。
附图说明：
图 1是本发明的主视结构示意图；
图 2是本发明的右侧视结构示意图；
图 3是所述入料分散器的结构示意图；
图 4是图 3的俯视结构示意图。
图中： 1-叶轮给料机， 2-入料分散装置， 3-布风室， 4-除尘引风罩， 5-气体分散器， 6-分选床， 7-挡板， 8-精煤叶轮排料机， 9-偏心轴激振器， 10-前机架， 11-流量计， 12-后 机架， 13-液压缸， 14-矸石叶轮排料机， 15-布风板， 16-弹簧支座， 17-弹簧； 18-调节阀， 19-热风管。 20-溜槽; 21-钢棒。
具体实施方式：
下面结合附图对本发明的一个实施例作进一步的描述：
如图 1、 图 2和图 3所示， 本发明的振动流化床干燥分选一体机， 主要由分选床 6、 前机架 10、 后机架 12、 布风室 3、 偏心轴激振器 9、 矸石叶轮排料机 14和精煤叶轮排料 机 8构成。所述分选床 6的前端上部设有叶轮给料机 1，分选床 6的尾端设有矸石叶轮排 料机 14和精煤叶轮排料机 8， 分选床 6的上部设有除尘引风罩 4， 底部设有布风室 3， 布 风室 3上部设有布风板 15，所述的前机架 10和后机架 12与分选床 6通过弹簧 17和弹簧 支座 16联接； 所述的后机架 12底部设有实现分选床 6的倾角在 -10°~+10°的范围内可调 的液压缸 13; 通过液压缸 13调节后机架 12高度， 实现分选床 6倾角在 -10°~+10°的范围 内可调；所述的叶轮给料机 1下部设有固定在分选床 6上的入料分散装置 2;所述的入料 分散装置 2与叶轮给料机 1柔性联接， 与分选床 6刚性联接； 所述的入料分散装置 2包 括溜槽 20， 溜槽 20内间隔设有纵横交错的三排钢棒 21， 破碎由于叶轮给料机 1叶轮挤 压作用形成的大块物料； 所述分选床 6顶底部的除尘引风罩 4和布风室 3各为两个， 除 尘引风罩 4和布风室 3的外表面上分别喷涂有 2-3 mm厚的隔热涂层，分选床 6的前端下 部设有分离式偏心轴激振器 9; 所述的布风板 15由上下多孔金属夹板和夹装在多孔金属 夹板内的石棉纤维滤布组成； 所述的两个布风室 3底部分别设有由导流板和限流板组成 的气体分散器 5， 以促进热风在整个布风室截面上均匀分散；气体分散器 5与喷涂有隔热 涂层的热风管 19相连， 所述的热风管 19入口处设有实现布风室 3进风量误差在 ±4%范 围内的变频恒压控制器， 所述变频恒压控制器包括压力传感器、 接受压力传感器信号的 微机处理模块、 以及控制风机转速的变频器组成， 通过变频器接受微机处理模块的控制 信号实现热风管 19的恒压变流量的供风要求。 与气体分散器 5相连的热风管 19上设有 流量计 11和控制进入布风室 3风量的调节阀 18，实现分选长度方向上的分段独立地调节 气速。所述的精煤叶轮排料机 8的前部设有可上下移动的挡板 7，挡板 Ί螺纹联接在分选 床 6上， 通过调节螺栓使挡板 7在固定的条形槽内上下移动， 调节挡料高度。
工作过程： 热风管 19里的高温热风通过调节阀 18和流量计 11进入到布风室 3， 通 过气体分散器 5均匀地通过布风板 15进入到分选床 6内， 同时入料通过叶轮给料机 1进 入到入料分散装置 2中， 散状入料进入到分选床 6中， 在振动和高温热风协同作用下实 现流化。 入料颗粒与高温热风实现高效的传热传质， 其水分不断以水蒸气的形式被上升 气流带出分选床， 进入到除尘器中， 收集灰尘， 排出含有余热的清洁气体， 进行循环使 用。 入料在水分脱出的同时， 在振动流化床中实现基于干扰沉降过程的物料分层， 矸石 下沉， 精煤上浮， 通过分选床尾端的矸石叶轮排料机 14和精煤叶轮排料机 8分别排出， 从而完成脱灰过程， 实现分选。 精煤产品的质量和数量可以通过精煤叶轮排料机 8前部 的挡板 7进行控制。

Claims

权利要求书
1. 一种振动流化床干燥分选一体机， 包括前机架 （10)、 后机架 （12)、 分选床 (6)、 设在分选床前端上部的叶轮给料机 （1)， 分选床 （6) 的尾端设有矸石叶轮排料机 (14) 和精煤叶轮排料机 （8)， 分选床 （6) 的上部设有除尘引风罩 （4)， 底部设有布风 室 （3)， 布风室 （3) 上部设有布风板 （15)， 所述的前机架 （10) 和后机架 （12) 与分 选床 （6) 通过弹簧 （17) 和弹簧支座 （16) 联接； 其特征在于， 所述的后机架 （12) 底 部设有实现分选床 （6) 的倾角在 -10°~+10°的范围内可调的液压缸 （13); 所述的叶轮给 料机 （1) 下部设有固定在分选床 （6) 上与叶轮给料机 （1) 柔性联接的入料分散装置
(2)； 所述的入料分散装置 （2) 包括溜槽 （20)， 溜槽 （20) 内间隔设有纵横交错的三 排钢棒 （21); 所述分选床 （6) 顶底部的除尘引风罩 （4) 和布风室 （3) 各为两个， 除 尘引风罩 （4) 和布风室 （3) 的外表面上分别喷涂有 2-3 mm 厚的隔热涂层， 分选床
(6) 的前端下部设有分离式偏心轴激振器 （9); 所述的布风板 （15) 由上下多孔金属夹 板和夹装在多孔金属夹板内的石棉纤维滤布组成； 所述的两个布风室 （3) 底部分别设有 气体分散器 （5)， 气体分散器 （5) 与喷涂有隔热涂层的热风管 （19) 相连， 所述的气体 分散器 （5) 由导流板和限流板组成； 与气体分散器 （5) 相连的热风管 （19) 上设有流 量计 （11) 和控制进入布风室 （3) 风量的调节阀 （18)。
2. 根据权利要求 1 所述的振动流化床干燥分选一体机， 其特征在于： 所述的精煤叶 轮排料机 （8) 前部设有可上下移动的挡板 （7)。
3. 根据权利要求 1 所述的振动流化床干燥分选一体机， 其特征在于： 所述的热风管 (19) 入口处设有实现布风室 （3) 进风量误差在 ±4%范围内的变频恒压控制器。
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