WO2013029335A1 - 底部进气式净化系统 - Google Patents

底部进气式净化系统 Download PDF

Info

Publication number
WO2013029335A1
WO2013029335A1 PCT/CN2012/001115 CN2012001115W WO2013029335A1 WO 2013029335 A1 WO2013029335 A1 WO 2013029335A1 CN 2012001115 W CN2012001115 W CN 2012001115W WO 2013029335 A1 WO2013029335 A1 WO 2013029335A1
Authority
WO
WIPO (PCT)
Prior art keywords
alumina
purification system
air intake
dust collector
pipe
Prior art date
Application number
PCT/CN2012/001115
Other languages
English (en)
French (fr)
Inventor
宋海琛
张国斌
王富强
刘雅锋
汪林
胡红武
Original Assignee
中铝国际工程股份有限公司
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 中铝国际工程股份有限公司 filed Critical 中铝国际工程股份有限公司
Priority to RU2014112036/02A priority Critical patent/RU2605024C2/ru
Publication of WO2013029335A1 publication Critical patent/WO2013029335A1/zh

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25CPROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C3/00Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/22Collecting emitted gases

Definitions

  • the present invention relates to a purification system, and more particularly to a bottom air intake purification system for electrolytic waste gas purification in an electrolytic aluminum industry. Background technique
  • the aluminum electrolysis process uses an alumina melt as an electrolyte, a carbon material as an electrode for electrolysis, a liquid metal aluminum precipitated on the cathode, and a co 2 -based anode gas on the anode.
  • atmospheric pollutants mainly composed of hydrogen fluoride, fluoride, dust and the like are emitted, and these gases and anode gases are collectively referred to as electrolytic flue gas.
  • Electrolytic flue gas that pervades the interior of the electrolysis workshop deteriorates working conditions and seriously affects the health of the production workers.
  • the spread of electrolytic flue gas to the surrounding area of the plant will pollute the atmosphere, causing great harm to the development of agricultural and livestock production and people's lives.
  • the electrolytic flue gas must be treated to meet the standard discharge.
  • the fluoride in the electrolysis flue gas is also an important raw material for electrolysis production. Recycling has great economic value. Therefore, the electrolytic aluminum industry needs to be equipped with a flue gas purification system.
  • Electrolytic flue gas purification systems are available in a variety of configurations depending on site conditions and process conditions.
  • the electrolysis series with a capacity of 5 to 60,000 tons/year was equipped with a purification system.
  • the purification system was relatively small and the configuration was simple.
  • the above two system configuration forms have the disadvantages of low mutual standby degree, unstable airflow, large floor space, high cost, high operation and maintenance cost, high energy consumption, etc.
  • the most important thing is to further improve the efficiency of flue gas purification. difficult.
  • the flue gas generally enters the dust collector from the side, and the installation point of the reactor is relatively high, which leads to a relatively high access point of the fresh alumina of the purification system, reduces the effective volume of the silo, and simultaneously removes dust.
  • the outlet rectangular cigarette pipe is also relatively high, and needs to be installed on the top or side of the dust collector. The vibration of the pipe affects the stability of the whole system.
  • the configuration of the purification system, the inlet and outlet valves of the dust collector, and the bag Inconvenient maintenance, electromagnetic pulse valve is generally placed in the open air, not convenient Overhaul.
  • the present invention provides a bottom air intake type purifying system, which aims to increase system stability, shorten construction period, save investment, reduce operating cost, facilitate maintenance, improve purification efficiency, and prolong the service life of equipment.
  • the bottom air intake purification system is composed of the following structure: a dust remover, the bottom of the dust remover is connected to the integrated pipeline before the dust collector through the dust collector intake duct, and the dust collector is
  • a multi-point reactor is arranged on the gas pipeline, and an alumina separating device is arranged between the multi-point reactor and the fresh alumina silo, and the alumina separating device and the multi-point reactor are connected through the material dividing chute to oxidize
  • An alumina feeding device is arranged between the aluminum separating device and the fresh alumina silo, and the lower part of the precipitator is provided with a returning feeding pipe, and the returning feeding pipe is sent to the material lifting device through the return chute and then sent to the ferric fluoride plant.
  • the silo, the upper part of the precipitator is connected to the dust collector outlet summary pipeline through the dust collector outlet pipe, and the dust collector outlet summary pipe is connected to the smoke through the fan.
  • the bottom air intake purification system is arranged in a single row manner, or arranged in a back-to-back manner, or in a multi-row manner.
  • the dust remover is a bag filter.
  • a dust collector maintenance room is arranged above the dust remover.
  • the upper part of the dust collector maintenance room is provided with a lifting device.
  • a baffle is provided at a ash portion of the lower portion of the precipitator.
  • a dustproof shed is arranged above the side of the dust collector maintenance room; and a dust collector inspection platform is arranged below the side of the dust collector maintenance room.
  • a circulating feed chute is disposed between the lower portion of the precipitator and the multi-point reactor.
  • a dust collector inlet valve is disposed on the dust collector inlet pipe between the multi-point reactor and the pre-duster summary pipe.
  • the precipitator outlet pipe is provided with a dust collector outlet valve.
  • a de-doping device is disposed between the alumina feeding device and the fresh alumina silo.
  • An alumina metering device is disposed below the alumina feed device.
  • the alumina distributor is connected to the alumina feeder through a fresh chute.
  • the material lifting device is connected to the material lifting air supply device.
  • the material lifting air supply device is a Roots blower.
  • the bottom of the precipitator, the alumina distributor and the return chute are connected to one end of the supply duct, and the other end of the duct is connected to the air supply device.
  • the fresh chute is connected to one end of the air supply pipe, and the other end of the air pipe is connected to the air supply device.
  • the overall elevation of the purification system is reduced by using the bottom air intake, saving investment and increasing the stability of the system operation; (2) reducing the width of the purification system by using the bottom air intake, saving the civil construction steel Structure, and reduce the overall investment of the system; (3) Reduce the overall pressure of the purification system by using the bottom air intake, and ultimately reduce the system energy consumption; (4) By using the bottom air intake, the monorail crane is placed on the top of the dust collector.
  • the skeleton of the dust collector and the filter bag can be repaired in the open air, which changes the problem of overheating of the operating environment when the filter bag of the precipitator is replaced, and can make the skeleton of the precipitator into a single section and install it, which improves the efficiency; (5) Use a multi-point reactor or "four-central-central" reactor, or a VRI reactor, or a venturi reactor, or other type of gas-solid mixing equipment to improve the gas-solid mixing effect, thereby improving the purification effect; (6) The inlet and outlet pipes of the dust collector reduce the resistance of the inlet and outlet of the dust collector, and the valve position is easy to overhaul; (7) Passing the dust collector The mouth pipe makes the resistance of the front and rear pipes of the fan smaller, the vibration of the pipe is smaller, and the adverse effect on the frame of the precipitator is reduced; (8) The fresh alumina is optimized, and the fresh alumina is uniform, stable and quantitative.
  • the invention can save investment, improve efficiency, shorten the construction period, reduce the energy consumption of the system, facilitate maintenance, increase the stability of the system, reduce the running cost and the like, and has broad market application prospects.
  • Figure 1 is a diagram of the bottom air intake purification system of the present invention disposed in a back-to-back arrangement Schematic diagram.
  • Figure 2 is a flow diagram of the bottom air intake purification system of the present invention disposed in a back-to-back arrangement.
  • Dust collector Intake pipe; 9, reactor; 10, dust collector inlet valve; 1 1, summary pipe before the dust collector; 12, dust collector outlet pipe; 13, dust collector outlet valve; 14, return chute; 15, fresh chute; , dust collector outlet summary pipeline; 17, distribution chute; 18, fresh alumina silo; 19, fluoride-containing alumina silo; 20, impurity removal device; 21, alumina feeder; 22, alumina metering device 23, alumina material distribution device; 24, compressed air pipeline device; 25, material lifting device; 26, material lifting air supply device; 27, air supply device; 28, fan; 29, chimney; 30, ash bucket .
  • the bottom air intake type purifying system of the present invention as schematically shown in Figs. 1 and 2 is composed of the following structure: Dust collector 1, the bottom of the precipitator 1 passes through the precipitator inlet duct 8 and the precipitator assembly pipe 1 1 Connected, the pre-duster summary pipe 1 1 is located below the dust collector intake pipe 8; the reactor 9 is provided on the precipitator intake pipe 8, and the reactor 9 is oxidized between the fresh alumina silo 18
  • the aluminum material distributing device 23, the alumina material distributing device 23 and the reactor 9 are connected through the material dividing chute 17, and an alumina feeding device 21 is disposed between the alumina material distributing device 23 and the fresh alumina silo 18, and the dust removing device 1
  • the lower part is provided with a returning feeding pipe 7, and the returning discharging pipe 7 is sent to the material lifting device 25 through the return chute 14 and then sent to the fluorine-carrying alumina silo 19, and the upper portion of the precipitator 1 passes through the precipitator outlet pipe 12 and the
  • the summary conduit 16 is in communication and the precipitator outlet summary conduit 16 is connected to the chimney 29 by a blower 28.
  • a blower 28 a blower
  • the dust collector 1 is a bag type dust collector; the dust remover 1 is provided with a dust collector maintenance room 2, the upper part of the dust collector service room 2 is provided with a lifting device 3, and a dustproof shed 4 is arranged above the side of the dust collector maintenance room 2, A dust collector inspection platform 5 is arranged below the side of the dust collector maintenance room 2; the dust collector A circulating feed chute 6 is provided between the lower portion of the first reactor 1 and the reactor 9.
  • the bottom air-intake precipitator 1 mentioned above may be provided with a baffle (not shown) at the ash portion 30 of the lower portion thereof to disperse and average the airflow, thereby preventing the flue gas from directly scouring the bottom of the filter bag. , causing damage to the filter bag.
  • An induction blowing mode (not shown) may be provided at the top of the bottom air intake dust collector 1 to enhance the blowing effect.
  • the reactor 9 used in conjunction with the bottom-loaded precipitator 1 mentioned above may be a multi-point reactor or a "circumferential-central" reactor, or a VRI reactor, or a venturi reactor.
  • the reactor 9 differs in structural characteristics and principles from conventional reactors typically used in electrolytic flue gas dry scrubbing systems.
  • the conventional reactor adopts the form of spraying, and alumina is added from the middle of the dust collector inlet pipe 8 to the pipe to be mixed with the electrolytic flue gas; and the multi-point reactor used in the present invention adopts the form of a venturi pipe, respectively
  • the alumina is added into the pipeline from the periphery and the middle of the precipitator inlet pipe 8 in an overflow manner, so that in a shorter pipe diameter, the alumina particles are thoroughly mixed with the electrolysis flue gas to improve the purification of the electrolysis flue gas. effectiveness.
  • a precipitator inlet valve 10 is disposed on the precipitator inlet pipe 8 between the reactor 9 and the pre-duster summary pipe 1 1; and a precipitator outlet valve 13 is disposed on the precipitator outlet pipe 12.
  • An impurity removing device 20 is disposed between the alumina feeding device 21 and the fresh alumina silo 18, and an alumina metering device 22 is disposed below the alumina feeding device 21; the alumina dosing device 23 and the alumina feeding device 21 It is connected by a fresh chute 15.
  • the material lifting device 25 is connected to the material lifting air supply device 26, and the material lifting air supply device 26 is a Roots blower.
  • the bottom of the dust remover 1, the alumina distributor 23 and the return chute 14 are connected to one end of the air supply duct (indicated by a broken line on the air supply unit 27 shown in Fig. 2), and the other end of the air duct is connected to the air supply unit 27.
  • the fresh chute 15 is connected to one end of the air supply duct, and the other is provided for the air duct One end is connected to the air supply device 27.
  • the electrolyzed flue gas is fed into the electrolysis flue gas purification system through the gas collecting hood of the electrolysis tank and the exhaust pipe outside the workshop.
  • the integrated pipeline before entering the precipitator 1 is connected to the precipitating pipeline 1 1 of the precipitator.
  • the precipitator intake ducts 8 are arranged in parallel so that the reactor 9 and the precipitator 1 can be spared from each other.
  • the dust collector intake duct 8 enters the dust remover from the bottom, and the dust remover outlet duct 12 and the dust collector outlet summary duct 16 are supported by the dust collector body frame.
  • the fresh alumina delivery system passes through the fresh alumina silo 18, the decontamination device 20, the alumina feeder 21, the alumina metering device 22, the alumina distributor device 23, etc., so that the alumina is evenly distributed to each of the purification systems.
  • the return alumina passes through the returning discharge pipe 7 and enters the return chute 14, and then passes through the material lifting device 25 to drive the material into the fluorine-containing alumina silo 19, and enters the electrolysis workshop for production use.
  • Fresh alumina and return alumina have chutes and dust collectors for air supply.
  • the flue gas purified from the precipitator passes through the blower 28 and is discharged into the atmosphere by the chimney 29.
  • the maintenance of the bag and the like in the dust collector is performed in the dust collector maintenance room 2, and the dust collector maintenance room 2 may be open-air or closed, and the dust-removing device is assisted by the lifting device.
  • the dust collector outlet valve 13 and the dust collector inlet valve 10 are closed during maintenance of the dust collector.
  • the compressed air from the pipe network is connected to the dust collector service room 2 through the compressed air line device 24, and the dust remover is sprayed and cleaned.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treating Waste Gases (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

公开了一种底部进气式净化系统,由下述结构构成:除尘器,除尘器的底部通过除尘器进气管道与除尘器前汇总管道连通,在除尘器进气管道上设有反应器,反应器与新鲜氧化铝贮仓之间设有氧化铝分料装置,氧化铝分料装置与反应器通过分料溜槽连通,氧化铝分料装置与新鲜氧化铝贮仓之间设有氧化铝给料装置,除尘器的下部设有返回下料管,返回下料管通过返回溜槽送到物料提升装置后再送到载氟氧化铝贮仓,除尘器上部通过除尘器出口管道与除尘器出口汇总管道连通,除尘器出口汇总管道通过风机与烟囱连接。该系统可以提高效率,便于维修,降低系统的能耗,增加系统的稳定性。

Description

底部进气式净化系统 技术领域 .
本发明涉及一种净化系统, 尤其涉及一种用于电解铝行业电解烟 气干法净化的底部进气式净化系统。 背景技术
在电解铝行业, 铝电解过程是以氧化铝熔体为电解质, 以碳素材 料为电极进行电解,在阴极上析出液态的金属铝,在阳极上产生以 co2 为主的阳极气体。 同时还会散发出以氟化氢、 氟化物、 粉尘等为主的 大气污染物, 这些气体与阳极气体统称为电解烟气。
弥漫在电解车间内部的电解烟气使劳动条件恶化, 严重影响生产 工人的身体健康。 电解烟气扩散到厂区周围将污染大气, 给农牧业生 产的发展及人民生活带来极大的危害。按照国家标准 GB25465-2010《铝 工业污染物排放标准》 的要求, 必须对电解烟气加以治理, 进行达标 排放。 同时电解烟气中的氟化物也是电解生产的重要原料, 回收利用 具有重大的经济价值, 因此电解铝行业都需要配置烟气净化系统。
电解烟气净化系统根据现场情况及工艺条件要求有多种配置形 式。 过去一般 5〜6万吨 /年产能的电解系列配置一套净化系统, 净化系 统比较小,配置形式较单一。现在随着生产规模的扩大,一般对应 10〜13 万吨 /年或更大规模的电解铝系列, 配置一套烟气净化设施。 主要有以 下三种形式: ( 1 ) 20〜32反吹风除尘器 +20〜32反应器 +2~6 台主引风 机; (2 )28~32脉冲除尘器+28~32反应器+2~6台主引风机; ( 3 )28~32 预分离脉冲袋式除尘器 +28〜32反应器 +3〜4台主引风机。但是以上前两 种系统配置形式, 存在着系统相互备用程度低、 气流不稳定、 占地面 积大、 成本高、 运行维护费用高、 能耗高等缺点, 最重要的是进一步 提高烟气净化效率比较困难。 第三种配置形式, 烟气一般是从侧部进 入除尘器, 反应器的安装点比较高, 这样导致了净化系统新鲜氧化铝 的接入点比较高, 减少了贮仓的有效容积; 同时除尘器的出口矩形大 烟管也比较高, 且需要安装在除尘器顶部或侧部, 由于管道振动影响 了整个系统的稳定性, 同时该种净化系统的配置形式, 除尘器进出口 阀门、 布袋的检修都不方便, 电磁脉冲阀一般也是露天放置, 不便于 检修。
在国家环保标准的不断提高, 电解铝厂工人对劳动强度、 工作环 境、 系统安全性日益提高的要求下, 以及国家节能减排、 注重环保政 策的要求下, 以上三种系统需要进一步改进提高。 发明内容
为了解决上述技术问题本发明提供一种底部进气式净化系统, 目 的是为了增加系统的稳定、 缩短建设周期、 节约投资、 减少运行成本、 便于维修、 提高净化效率, 延长设备的使用寿命。
为达到上述目的, 本发明是这样实现的: 底部进气式净化系统, 由下述结构构成: 除尘器, 除尘器的底部通过除尘器进气管道与除尘 器前汇总管道连通, 在除尘器进气管道上设有多点式反应器, 多点式 反应器与新鲜氧化铝贮仓之间设有氧化铝分料装置, 氧化铝分料装置 与多点式反应器通过分料溜槽连通, 氧化铝分料装置与新鲜氧化铝贮 仓之间设有氧化铝给料装置, 除尘器的下部设有返回下料管, 返回下 料管通过返回溜槽送到物料提升装置后再送到栽氟氧化铝贮仓, 除尘 器上部通过除尘器出口管道与除尘器出口汇总管道连通, 除尘器出口 汇总管道通过风机与烟 1¾连接。
所述的底部进气式净化系统呈单排方式进行布置、 或呈背靠背方 式进行布置、 或呈多排方式进行布置。
所述的除尘器为布袋式除尘器。
所述的除尘器的上方设有除尘器检修室。
所述的除尘器检修室上部设有起吊装置。
在所述的除尘器的下部的灰斗部分处设置导流板。
所述的除尘器检修室的侧部上方设有防雨棚; 除尘器检修室的侧 部下方设有除尘器检修平台。
所述的除尘器的下部与多点式反应器之间设有循环下料溜槽。 所述的多点式反应器与除尘器前汇总管道之间的除尘器进气管道 上设有除尘器进口阀门。
所述的除尘器出口管道上设有除尘器出口阀门。
所述的氧化铝给料装置与新鲜氧化铝贮仓之间设有除杂装置。 所述的氧化铝给料装置下方设有氧化铝计量装置。 所述的氧化铝分料装置与氧化铝给料装置之间通过新鲜溜槽连 通。
所述的物料提升装置与物料提升供风装置连接。
所述的物料提升供风装置为罗茨鼓风机。
所述的除尘器底部、 氧化铝分料装置和返回溜槽与供风管的一端 连接, 供风管的另一端与供风装置连接。
所述的新鲜溜槽与供风管的一端连接, 供风管的另一端与供风装 置连接。
本发明的优点效果: ( 1 )通过采用底部进气使净化系统的整体标 高降低, 节省投资和增加系统运行的稳定性; (2 ) 通过采用底部进气 使净化系统的宽度减少, 节约土建钢结构, 并减少系统整体投资; (3 ) 通过采用底部进气使净化系统的整体压力降低, 并最终降低了系统能 耗; (4 ) 通过采用底部进气, 在除尘器顶部配置单轨吊, 使除尘器的 骨架、 滤袋等都可以露天检修, 改变了除尘器滤袋更换时操作环境过 热的问题, 且可以使除尘器的骨架进行单节制作和安装, 提高了效率; ( 5 )通过釆用多点式反应器或 "四周一中部"反应器、 或 VRI反应器、 或文丘里反应器、 或其它类型的气固混合设备, 提高气固混合效果, 进而提高净化效果; (6 )通过除尘器进出口管道, 使除尘器进出口管 道阻力减少, 阀门位置便于检修; (7 ) 通过除尘器出口管道使风机前 后管道的阻力更小, 管道震动更小, 减少对除尘器框架的不利影响; ( 8 ) 通过新鲜氧化铝输送设备和配置形式的优化, 实现新鲜氧化铝均 匀、 稳定、 定量的给料; (9 ) 通过采用隔音房等措施, 对净化系统中 高压离心风机、 罗茨风机等噪音设备集中管理, 降低操作区域噪音污 染。 具有占地面积更小、 系统阻力小、 气流分配均匀、 能耗低、 阀门 和滤袋便于维修、 噪音低、 系统稳定性高、 新鲜氧化铝来料接口低, 增加新鲜仓容积等优点。
本发明可以节省投资、 提高效率、 缩短工期、 降低了系统的能耗、 便于维修、 增加了系统的稳定性、 降低运行成本等突出特点, 具有广 阔的市场应用前景。 附图说明
图 1 是呈背靠背布置方式设置的本发明的底部进气净化系统的断 面示意图。
图 2 是呈背靠背布置方式设置的本发明的底部进气净化系统的流 程示意图。
图中: 1、 除尘器; 2、 除尘器检修室; 3、 起吊装置; 4防雨棚; 5、 除尘器检修平台; 6、 循环下料溜槽; 7、 返回下料管; 8、 除尘器进气 管道; 9、 反应器; 10、 除尘器进口阀门; 1 1、 除尘器前汇总管道; 12、 除尘器出口管道; 13、 除尘器出口阀门; 14、 返回溜槽; 15、 新鲜溜 槽; 16、 除尘器出口汇总管道; 17、 分料溜槽; 18、 新鲜氧化铝贮仓; 19、 载氟氧化铝贮仓; 20、 除杂装置; 21、 氧化铝给料装置; 22、 氧 化铝计量装置; 23、 氧化铝分料装置; 24、 压缩空气管路装置; 25、 物料提升装置; 26、 物料提升供风装置; 27、 供风装置; 28、 风机; 29、 烟囱; 30、 灰斗部分。 具体实施方式
下面结合附图对本发明加以详细描述, 但本发明的保护范围不受 示意图所限。
如图 1 和 2示意性地示出的本发明的底部进气式净化系统, 由下 述结构构成: 除尘器 1, 除尘器 1的底部通过除尘器进气管道 8与除尘 器前汇总管道 1 1 连通, 除尘器前汇总管道 1 1 设在除尘器进气管道 8 的下方; 在除尘器进气管道 8上设有反应器 9 , 反应器 9与新鲜氧化铝 贮仓 18之间设有氧化铝分料装置 23 , 氧化铝分料装置 23与反应器 9 通过分料溜槽 17连通, 氧化铝分料装置 23与新鲜氧化铝贮仓 18之间 设有氧化铝给料装置 21, 除尘器 1 的下部设有返回下料管 7, 返回下 料管 7通过返回溜槽 14送到物料提升装置 25后再送到载氟氧化铝贮 仓 19, 除尘器 1 上部通过除尘器出口管道 12与除尘器出口汇总管道 16连通, 除尘器出口汇总管道 16通过风机 28与烟囱 29连接。 当然, 所属领域的技术人员能够意识到: 本发明的底部进气式净化系统也可 以被设置成其它已公知的布置方式, 如单排布置方式、 多排布置方式 等。
除尘器 1为布袋式除尘器; 除尘器 1的上方设有除尘器检修室 2 , 除尘器检修室 2上部设有起吊装置 3 ,除尘器检修室 2的侧部上方设有 防雨棚 4, 除尘器检修室 2的侧部下方设有除尘器检修平台 5 ; 除尘器 1的下部与反应器 9之间设有循环下料溜槽 6。 上文提到的底部进气式 除尘器 1可以在其下部的灰斗部分 30处设置导流板 (图中未示出) , 以将气流分散、 平均, 从而避免烟气直接冲刷滤袋底部, 造成滤袋损 害。 在底部进气式除尘器 1 的顶部可以设置诱导喷吹方式 (图中未示 出) , 用以增强喷吹效果。
与上文提到的底部进气式除尘器 1相配套使用的反应器 9可以是 多点式反应器或 "四周一中部" 反应器、 或 VRI反应器、 或文丘里反 应器。 所述反应器 9 与一般在电解烟气干法净化系统中所使用的常规 反应器相比, 其结构特点和原理都不同。 常规反应器采用喷射的形式, 使氧化铝从除尘器进气管道 8 中部加入到管道中, 与电解烟气进行混 合; 而本发明所采用的多点式反应器采用文丘里管的形式, 分别从除 尘器进气管道 8的四周和中部将氧化铝采用溢流的形式加入到管道中, 使得在较短的管径内, 氧化铝颗粒与电解烟气进行充分混合, 提高电 解烟气的净化效率。
如果选用上述常规反应器与本发明的底部进气式除尘器 1 相配套 使用, 虽然可以节省投资和运行费用, 但是会出现反应不充分、 净化 效率不高等缺点, 不能满足环保排放标准的要求; 如果本发明的多点 式反应器 9 与现有技术中的側部进气式除尘器配套使用, 纵使多点式 反应器效率更高, 但是由于反应管段过长, 会造成氧化铝破损、 系统 沿程阻力增加、 投资升高等缺点。 由此可见, 本发明的底部进气式净 化系统通过底部进气式除尘器 1 和多点式式反应器 9相配套使用, 能 够充分发挥多点式反应器反应效率高, 反应段较短的特点。
反应器 9与除尘器前汇总管道 1 1之间的除尘器进气管道 8上设有 除尘器进口阀门 10; 除尘器出口管道 12上设有除尘器出口阀门 13。
氧化铝给料装置 21与新鲜氧化铝贮仓 18之间设有除杂装置 20, 氧化铝给料装置 21 下方设有氧化铝计量装置 22; 氧化铝分料装置 23 与氧化铝给料装置 21之间通过新鲜溜槽 15连通。
物料提升装置 25与物料提升供风装置 26连接, 物料提升供风装 置 26为罗茨鼓风机。
除尘器 1 底部、 氧化铝分料装置 23和返回溜槽 14与供风管 (由 图 2所示供风装置 27上面的虚线表示) 的一端连接, 供风管的另一端 与供风装置 27连接; 新鲜溜槽 15与供风管的一端连接, 供风管的另 一端与供风装置 27连接。
电解烟气通过电解槽集气罩和车间外排烟管道汇入电解烟气净化 系统, 首先进入除尘器前汇总管道 1 1, 除尘器进气管道 8与除尘器前 汇总管道 1 1相联, 且除尘器进气管道 8是并联配置, 这样可以使反应 器 9和除尘器 1相互备用。 除尘器进气管道 8从底部进入除尘器 1, 除 尘器出口管道 12和除尘器出口汇总管道 16以除尘器本体框架为支撑。 新鲜氧化铝输送系统经过新鲜氧化铝贮仓 1 8、 除杂装置 20、 氧化铝给 料装置 21、 氧化铝计量装置 22、 氧化铝分料装置 23等使得氧化铝均 匀分配到净化系统的每一台反应器内。 返回氧化铝经过返回下料管 7 进入返回溜槽 14,再经过物料提升装置 25将物料打入载氟氧化铝贮仓 19 , 在经过进入电解车间供生产使用。 新鲜氧化铝和返回氧化铝都有 溜槽及除尘器供风装置进行供风。
从除尘器出来净化后的烟气经过风机 28, 由烟囱 29排入大气。 除尘器内布袋等的检修在除尘器检修室 2内进行,除尘器检修室 2 可以是露天的, 也可以是封闭的, 由起吊装置辅助检修除尘器。
除尘器的检修时关闭除尘器出口阀门 13和除尘器进口阀门 10。 从管网来的压缩空气通过压缩空气管路装置 24与除尘器检修室 2 连接, 对除尘器进行喷吹清灰。

Claims

权 利 要 求
1. 底部进气式净化系统, 其特征在于, 所述底部进气式净化系统 由下述结构构成: 除尘器, 除尘器的底部通过除尘器进气管道与除尘 器前汇总管道连通, 在除尘器进气管道上设有多点式反应器, 多点式 反应器与新鲜氧化铝贮仓之间设有氧化铝分料装置, 氧化铝分料装置 与多点式反应器通过分料溜槽连通, 氧化铝分料装置与新鲜氧化铝贮 仓之间设有氧化铝给料装置, 除尘器的下部设有返回下料管, 返回下 料管通过返回溜槽送到物料提升装置后再送到载氟氧化铝贮仓, 除尘 器上部通过除尘器出口管道与除尘器出口汇总管道连通, 除尘器出口 汇总管道通过风机与烟 1¾连接。
2. 根据权利要求 1 所述的底部进气式净化系统, 其特征在于, 所 述的底部进气式净化系统呈单排方式进行布置、 或呈背靠背方式进行 布置、 或呈多排方式进行布置。
3. 根据权利要求 1 所述的底部进气式净化系统, 其特征在于, 所 述的除尘器为布袋式除尘器。
4. 根据权利要求 1 所述的底部进气式净化系统, 其特征在于, 所 述的除尘器的上方设有除尘器检修室。
5. 根据权利要求 4所述的底部进气式净化系统, 其特征在于, 所 述的除尘器检修室上部设有起吊装置。
6. 根据权利要求 1 所述的底部进气式净化系统, 其特征在于, 在 所述的除尘器的下部的灰斗部分处设置导流板。
7. 根据权利要求 1 所述的底部进气式净化系统, 其特征在于, 所 述的除尘器的下部与多点式反应器之间设有循环下料溜槽。
8. 根据权利要求 1 所述的底部进气式净化系统, 其特征在于, 所 述的多点式反应器与除尘器前汇总管道之间的除尘器进气管道上设有 除尘器进口阀门。
9. 根据权利要求 1 所述的底部进气式净化系统, 其特征在于, 所 述的除尘器出口管道上设有除尘器出口阀门。
10. 根据权利要求 1所述的底部,进气式净化系统, 其特征在于, 所 述的氧化铝给料装置与新鲜氧化铝贮仓之间设有除杂装置。
1 1 . 根据权利要求 10所述的底部进气式净化系统, 其特征在于, 所述的氧化铝给料装置下方设有氧化铝计量装置。
12. 根据权利要求 1所述的底部进气式净化系统, 其特征在于, 所 述的氧化铝分料装置与氧化铝给料装置之间通过新鲜溜槽连通。
13. 根据权利要求 1所述的底部进气式净化系统, 其特征在于, 所 述的物料提升装置与物料提升供风装置连接。
14. 根据权利要求 1所述的底部进气式净化系统, 其特征在于, 所 述的除尘器底部、 氧化铝分料装置和返回溜槽与供风管的一端连接, 供风管的另一端与供风装置连接。
15. 根据权利要求 12所述的底部进气式净化系统, 其特征在于, 所述的新鲜溜槽与供风管的一端连接, 供风管的另一端与供风装置连 接。
PCT/CN2012/001115 2011-08-29 2012-08-20 底部进气式净化系统 WO2013029335A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2014112036/02A RU2605024C2 (ru) 2011-08-29 2012-08-20 Система очистки с нижним газоподводом

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110250021.5 2011-08-29
CN201110250021.5A CN102953090B (zh) 2011-08-29 2011-08-29 底部进气式净化系统

Publications (1)

Publication Number Publication Date
WO2013029335A1 true WO2013029335A1 (zh) 2013-03-07

Family

ID=47755247

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/001115 WO2013029335A1 (zh) 2011-08-29 2012-08-20 底部进气式净化系统

Country Status (3)

Country Link
CN (1) CN102953090B (zh)
RU (1) RU2605024C2 (zh)
WO (1) WO2013029335A1 (zh)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108568902A (zh) * 2018-05-30 2018-09-25 河南三和水工机械有限公司 一种除尘仓及使用该除尘仓的混凝土搅拌楼
CN108946207A (zh) * 2018-07-02 2018-12-07 聊城信源集团有限公司 一种基于电解槽保温料的输送系统
CN110304457A (zh) * 2019-05-14 2019-10-08 大连广的科技有限公司 风动溜槽式自动除杂装置
CN111893516A (zh) * 2020-09-15 2020-11-06 东北大学设计研究院(有限公司) 一种用于铝电解烟气净化的除尘器及使用方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105986287A (zh) * 2015-02-09 2016-10-05 河南科达东大国际工程有限公司 烟气净化装置
CN105624733B (zh) * 2016-03-09 2018-02-13 新疆大学 一种铝电解槽槽外配料加料装置与方法
CN108622922A (zh) * 2018-07-09 2018-10-09 中铝集团山西交口兴华科技股份有限公司 一种氧化铝返料焙烧装置及方法
CN108914163A (zh) * 2018-08-16 2018-11-30 沈阳铝镁科技有限公司 一种干法铝电解烟气吸附净化一体化装置
CN109468664B (zh) * 2018-12-27 2021-07-20 登封电厂集团铝合金有限公司 一种电解槽净化系统中反应器的更换方法
CN110295376B (zh) * 2019-07-12 2024-03-22 东方电气集团东方锅炉股份有限公司 一种电解铝烟气净化系统及工艺
CN112221325A (zh) * 2020-10-20 2021-01-15 威海市正大环保设备股份有限公司 一种循环双投料干法脱硫方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1958866A (zh) * 2006-10-10 2007-05-09 沈阳铝镁设计研究院 铝电解槽烟气净化中氧化铝输送送风工艺及装置
US20080050298A1 (en) * 2006-08-24 2008-02-28 Meyden Hendrik J Van Der Method For Improving the HF Capture Efficiency of Dry Scrubbers
CN201793776U (zh) * 2010-06-29 2011-04-13 沈阳铝镁设计研究院 铝电解槽双烟管集气管路系统
CN102061488A (zh) * 2009-11-12 2011-05-18 沈阳铝镁设计研究院 电解烟气干法净化系统
EP2360296A1 (en) * 2010-01-21 2011-08-24 Alstom Technology Ltd A method of ventilating an aluminium production electrolytic cell

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102091A (en) * 1960-04-06 1963-08-27 Elektrokemisk As Automatic arrangement for maintaining combustion in gas burners for use with aluminum furnaces
GB1480216A (en) * 1974-10-04 1977-07-20 British Steel Corp Electroslag refining
CN1046141C (zh) * 1996-02-17 1999-11-03 抚顺铝厂科学研究所 铝电解烟道灰、脏料、吸附沥青氧化铝沸腾焙烧装置
CN1396282A (zh) * 2002-06-14 2003-02-12 抚顺铝厂科学研究所 用铝电解废弃物制取再生氟化盐、氧化铝的装置
CN2649604Y (zh) * 2003-08-25 2004-10-20 沈阳北环净化技术有限公司 铝电解槽多点式烟气净化回收装置
FR2887784B1 (fr) * 2005-07-01 2008-01-25 Solios Environnement Sa Procede et dispositif de traitement d'effluents gazeux contenant en particulier de l'acide fluorhydrique
CN100381612C (zh) * 2006-11-28 2008-04-16 沈阳铝镁设计研究院 铝电解阳极焙烧炉烟气净化工艺及净化系统
RU2339743C2 (ru) * 2006-11-29 2008-11-27 Открытое акционерное общество "Сибирский научно-исследовательский, конструкторский и проектный институт алюминиевой и электродной промышленности" (ОАО "СибВАМИ") Установка сухой очистки отходящих газов электролитического производства алюминия
CN201534889U (zh) * 2009-11-12 2010-07-28 沈阳铝镁设计研究院 电解烟气干法净化系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080050298A1 (en) * 2006-08-24 2008-02-28 Meyden Hendrik J Van Der Method For Improving the HF Capture Efficiency of Dry Scrubbers
CN1958866A (zh) * 2006-10-10 2007-05-09 沈阳铝镁设计研究院 铝电解槽烟气净化中氧化铝输送送风工艺及装置
CN102061488A (zh) * 2009-11-12 2011-05-18 沈阳铝镁设计研究院 电解烟气干法净化系统
EP2360296A1 (en) * 2010-01-21 2011-08-24 Alstom Technology Ltd A method of ventilating an aluminium production electrolytic cell
CN201793776U (zh) * 2010-06-29 2011-04-13 沈阳铝镁设计研究院 铝电解槽双烟管集气管路系统

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108568902A (zh) * 2018-05-30 2018-09-25 河南三和水工机械有限公司 一种除尘仓及使用该除尘仓的混凝土搅拌楼
CN108568902B (zh) * 2018-05-30 2023-12-19 河南三和水工机械有限公司 一种除尘仓及使用该除尘仓的混凝土搅拌楼
CN108946207A (zh) * 2018-07-02 2018-12-07 聊城信源集团有限公司 一种基于电解槽保温料的输送系统
CN110304457A (zh) * 2019-05-14 2019-10-08 大连广的科技有限公司 风动溜槽式自动除杂装置
CN110304457B (zh) * 2019-05-14 2024-02-02 大连广的科技有限公司 风动溜槽式自动除杂装置
CN111893516A (zh) * 2020-09-15 2020-11-06 东北大学设计研究院(有限公司) 一种用于铝电解烟气净化的除尘器及使用方法

Also Published As

Publication number Publication date
CN102953090B (zh) 2015-06-03
RU2605024C2 (ru) 2016-12-20
CN102953090A (zh) 2013-03-06
RU2014112036A (ru) 2015-10-10

Similar Documents

Publication Publication Date Title
WO2013029335A1 (zh) 底部进气式净化系统
CN201049353Y (zh) 焊接烟尘通风净化装置
CN102851706B (zh) 电解烟气干法净化系统
CN206274191U (zh) 一种室内空气净化装置
CN204799417U (zh) 一种管式导电玻璃湿式电除尘器
CN204601914U (zh) 一种智能废气除尘除臭装置
CN202893122U (zh) 一种烟气净化装置
CN106731435A (zh) 一种角型超细颗粒凝并箱
CN211585842U (zh) 一种工业锅炉除尘环保设备
CN202151545U (zh) 环保节能高效多级除尘器
CN112090220A (zh) 一种湿熄焦烟气除尘脱白多重净化处理装置及方法
CN106823664A (zh) 一种横置锚型超细颗粒凝并箱
CN103480210A (zh) 节能环保轴流风机组除尘装置
CN206381749U (zh) 一种焦炭生产线的多点位除尘净化系统
CN206944401U (zh) 一种洁净手术室用净化新风系统
CN204768234U (zh) 一种卧式绕流除尘脱硝脱硫装置
CN214261198U (zh) 一种湿熄焦烟气除尘脱白多重净化处理装置
CN215507289U (zh) 一种高效节能静电除尘器
CN208320336U (zh) 一种洗涤式与荷电式协同处理焊烟的净化装置
CN201140025Y (zh) 一种烟气净化回收系统
CN211274095U (zh) 一种建筑工地用高效降尘装置
CN103055619A (zh) 一种铁合金电炉烟气净化粉尘回收新工艺及其装置
CN208244314U (zh) 一种电焊烟气除尘设备
CN202751908U (zh) 锅炉排渣系统除尘装置
CN207287764U (zh) 一种烟气综合处理的湿式电除尘器系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12827027

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2014/02288

Country of ref document: TR

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2014112036

Country of ref document: RU

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 12827027

Country of ref document: EP

Kind code of ref document: A1