WO2023077608A1 - 一种带有磁性粒子的流化床净化系统及其应用方法 - Google Patents

一种带有磁性粒子的流化床净化系统及其应用方法 Download PDF

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WO2023077608A1
WO2023077608A1 PCT/CN2021/136332 CN2021136332W WO2023077608A1 WO 2023077608 A1 WO2023077608 A1 WO 2023077608A1 CN 2021136332 W CN2021136332 W CN 2021136332W WO 2023077608 A1 WO2023077608 A1 WO 2023077608A1
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magnetic
fluidized bed
magnetic particles
purification system
bed reactor
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PCT/CN2021/136332
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English (en)
French (fr)
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何向阳
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飞潮（无锡）过滤技术有限公司
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
    • C02F1/484—Treatment of water, waste water, or sewage with magnetic or electric fields using electromagnets
    • C02F1/485—Treatment of water, waste water, or sewage with magnetic or electric fields using electromagnets located on the outer wall of the treatment device, i.e. not in contact with the liquid to be treated, e.g. detachable

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  • the invention relates to the technical field of fluidized bed filtration and separation, in particular to a fluidized bed purification system with magnetic particles and an application method thereof.
  • the fluidized bed reactor is a reactor that uses gas or liquid to pass through the granular solid layer to keep the solid particles in a state of suspension and movement, and to perform a gas-solid phase reaction process or a liquid-solid phase reaction process.
  • fluidized bed reactors are mainly used in petrochemical, fine chemical, pharmaceutical, food, grain and oil, waste residue treatment, etc., such as wastewater treatment, catalyst recovery and regeneration, etc.
  • the pollutants in wastewater are mainly organic pollutants and metal pollutants, and there may be other large particles (such as powder, catalyst, resin, etc.) in chemical wastewater.
  • different pollutants are usually treated separately through multiple processes. The process is cumbersome, not only the treatment process and factors affecting the treatment effect are complicated, but also the cost is high.
  • Stirring devices are commonly used in existing fluidized bed reactors to achieve full mixing and reaction of various phase media, but for large-scale fluidized bed reactors, the stirring effect is not good and the energy consumption is high, so some people improved the stirring device.
  • a magnetic field fluidized bed was invented by using magnetic rotors or magnetic particles for stirring.
  • various impurities will accumulate on the surface, and the magnetism will weaken, and the magnetic field will drive its agitation effect. It will also weaken accordingly and affect the reaction. Therefore, it is necessary to stop the work and input new magnetic rotors or magnetic particles, which will affect the work efficiency.
  • the first object of the present invention is to disclose a fluidized bed purification system with magnetic particles.
  • the magnetic particles are driven by a magnetic field to stir the material to be reacted to achieve fast and efficient reaction, and the magnetic particles are regenerated by the magnetic particle regeneration system.
  • the magnetic particles can be used repeatedly, and the fluidized bed purification system can work continuously.
  • the magnetic particles are made of a porous structure and various functional groups are added to the surface, and can be used as a reaction medium at the same time.
  • the invention provides a fluidized bed purification system with magnetic particles, comprising a fluidized bed reactor (1) connected in sequence, a magnetic separator (4), a magnetic particle regeneration system (6) and clear liquid tank (5); the magnetic separator (4) is respectively connected to the clear liquid tank (5) and the magnetic particle regeneration system (6) through pipelines; the outside of the fluidized bed reactor (1) is provided with several A magnetic field generator (2), the magnetic particle regeneration system (6) is connected with a first backwash system (12), and the magnetic separator (4) is also connected with a second backwash system (13).
  • the outer side of the fluidized bed reactor (1) is provided with several adjacent magnetic field generators (2) along the radial or axial direction, and the adjacent magnetic field generators (2) There are partitions in between.
  • the magnetic field generator (2) consists of a single or multiple sets of electromagnetic coils.
  • the liquid outlet of the magnetic particle regeneration system (6) is respectively connected to the first backwash system (12) and the clear liquid tank (5), and the bottom of the magnetic particle regeneration system (6) is connected with Magnetic particle collection tank (7).
  • the magnetic particle collection tank (7) is connected to the magnetic particle storage tank (9) through a self-priming pump (8), and the magnetic particle storage tank (9) and the fluidized bed reactor (1) connect.
  • a security filter (10) is further provided between the clear liquid tank (5) and the magnetic separator (4).
  • the fluidized bed reactor (1) is also connected with a magnetic particle adding tank (11).
  • an aeration device is provided at the bottom of the fluidized bed reactor (1), and the liquid inlet of the fluidized bed reactor (1) is connected to a stock solution tank.
  • the second object of the present invention is to disclose an application method of the fluidized bed purification system with magnetic particles, through which the continuous treatment of waste water and waste liquid treatment and the repeated use of magnetic particles can be realized.
  • the present invention provides a method for applying the fluidized bed purification system with magnetic particles, comprising the following steps:
  • the stock solution and magnetic particles are passed into the fluidized bed reactor (1), and the magnetic field generator (2) is turned on, and the magnetic particles are driven by the magnetic field generated by the magnetic field generator (2) to stir the stock solution to react;
  • step 1 Pass the reacted liquid in step 1 into the magnetic separator (4), utilize the magnetic separator (4) to adsorb the magnetic particles in the liquid on the magnetic pole (41), and complete the separation of the magnetic particles and the liquid, and the separated
  • the liquid passes into the clear liquid tank (5) to collect;
  • the magnetic particles are collected in the magnetic particle collection tank (7) and can be reused.
  • the magnetic field generator (2) in the step 1 is a radial coil or an axial coil, and the radial coil or the axial coil generates a magnetic field strength after passing through a direct current.
  • the magnetic strength of the magnetic separator (4) is 0.3T-2T.
  • the magnetic particle has a four-layer structure, the innermost first layer is a magnetic core, the second layer is a dense coating layer, the third layer is a porous coating layer, and the fourth layer is a functional group layer.
  • the particle size of the magnetic core ranges from 10 nm to 1 mm
  • the thickness of the dense coating layer is 1 ⁇ m to 100 ⁇ m
  • the thickness of the porous coating layer is 5 ⁇ m to 1 mm.
  • the beneficial effects of the present invention are: (1) use the magnetic field to drive the magnetic particles to rotate instead of the traditional stirring parts, which reduces energy consumption and improves the reaction efficiency; (2) the multi-magnetic field can provide the disturbance of the magnetic particles direction, increase the shear force between the magnetic particles, reduce the surface agglomeration of the magnetic particles, and make the reaction more complete; (3) The magnetic separator and the magnetic particle regeneration system can reuse the magnetic particles, and the whole reaction process is uninterrupted, realizing continuous (4)
  • the porous structure of magnetic particles has high adsorption, and the surface has functional groups and can also be used as a reaction medium.
  • Fig. 1 is the structural representation of the fluidized bed purification system that has magnetic particle shown in the present invention
  • the present embodiment provides a fluidized bed purification system with magnetic particles, including a fluidized bed reactor 1 connected in sequence, a magnetic separator 4, a magnetic particle regeneration system 6 and a clear liquid tank 5
  • the magnetic separation 4 is respectively connected to the clear liquid tank 5 and the magnetic particle regeneration system 6 through pipelines; the magnetic particle regeneration system 6 is connected to the first backwash system 12, and the magnetic separator 4 is also connected to the second backwash System 13.
  • the liquid inlet of the fluidized bed reactor 1 is connected to the stock solution tank.
  • the liquid outlet of the magnetic particle regeneration system 6 is respectively connected to the first backwash system 12 and the clear liquid tank 5 , and the magnetic particle collection tank 7 is connected to the bottom of the magnetic particle regeneration system 6 .
  • the top liquid return port of the magnetic particle regeneration system 6 can also be connected to the fluidized bed reactor 1 to ensure that the magnetic particle regeneration system 6 is always filled with liquid when the magnetic particles are regenerated.
  • the magnetic particle regeneration system 6 shown is a cluster filter or a dynamic ceramic membrane filtration system.
  • the preferred cluster filter in this embodiment is provided with a plurality of filter elements.
  • the first backwashing system 12 can be used for regeneration treatment such as washing, backwashing, backflushing and drying, and the treated magnetic particles are discharged into the magnetic particle collection tank 7 for use.
  • the magnetic particle collection tank 7 is connected to a magnetic particle storage tank 9 through a self-priming pump 8 , and the magnetic particle storage tank 9 is connected to the fluidized bed reactor 1 .
  • the fluidized bed reactor 1 is also connected with a magnetic particle addition tank 11 . During the waste water and waste liquid treatment process, the magnetic particles can be replenished into the fluidized bed reactor 1 in time.
  • a security filter 10 is provided between the clear liquid tank 5 and the magnetic separator 4 . In order to prevent the liquid in the clear liquid tank 5 from being polluted again due to the incomplete absorption of the magnetic particles by the magnetic separator 4 .
  • an aeration device can be installed at the bottom of the fluidized bed reactor 1 .
  • the aeration device at the bottom of the fluidized bed reactor 1 can be opened to increase the fluidity of the stock solution.
  • magnetic field generators 2 are arranged on the outside of the fluidized bed reactor 1, and the magnetic field generators 2 are arranged on the outside of the fluidized bed reactor 1 along the radial or axial direction, and the magnetic field generators 2 may be arranged adjacent to each other in the radial direction and opposite to each other in the axial direction, so as to provide magnetic fields of different directions and/or intensities.
  • the magnetic field generator 2 can be arranged outside the fluidized bed reactor 1 at any angle to the radial direction in addition to being arranged in the radial direction or the axial direction.
  • the magnetic field generator 2 is composed of a single or multiple sets of electromagnetic coils.
  • the magnetic field generator 2 is composed of radial coils or axial coils, and the radial coils or axial coils generate magnetic field strength after passing direct current.
  • two sets of magnetic field generators 2 are provided on the outside of the fluidized bed reactor 1 along the radial direction, and each set of magnetic field generators 2 is located on the same circumferential surface.
  • the same group of magnetic field generators 2 can be arranged on both sides of the fluidized bed reactor 1 in axisymmetric manner.
  • a partition is provided between the upper and lower adjacent magnetic field generators 2 on the same side to prevent the magnetic fields generated by the upper and lower two sets of magnetic field generators 2 from influencing each other.
  • the magnetic particles have a four-layer structure, the innermost first layer is a magnetic core, the second layer is a dense coating layer, the third layer is a porous coating layer, and the fourth layer is a functional group layer.
  • the magnetic core is selected from Fe3O4, the particle size range of the magnetic core is 10nm-1mm, the thickness of the dense coating layer is 1 ⁇ m-100 ⁇ m, the thickness of the porous coating layer is 5 ⁇ m-1mm, and the porous structure of the porous coating layer increases In order to ensure the adsorption of magnetic particles, the fourth layer is the functional group layer. By grafting various functional groups on the porous coating layer, the chemical reaction between the magnetic particles and the substances in the stock solution is realized to achieve the treatment effect.
  • magnetic particles with functional groups can be used to react with them to achieve purification treatment.
  • the magnetic particles are driven by the magnetic field to stir the substances to be reacted to realize rapid and efficient reaction, and the magnetic particle regeneration system 6 is used to regenerate the magnetic particles, which can realize the repeated use of the magnetic particles and the continuous operation of the fluidized bed purification system.
  • the fluidized bed purification system with magnetic particles in this embodiment comprises the following steps:
  • the stock solution and magnetic particles are fed into the fluidized bed reactor 1, and the magnetic field generator 2 is turned on, and the magnetic particles generated by the magnetic field generator 2 drive the magnetic particles to stir the stock solution for reaction. If it is a stock solution with high viscosity and high concentration or there are many particles in the stock solution, you can also open the aeration device at the bottom of the fluidized bed reactor 1, and add multiple sets of magnetic field generators 2 to generate magnetic fields with different directions and intensities, so as to realize the contact between the stock solution and Thorough mixing, agitation, and reaction of magnetic particles.
  • the liquid after the reaction in step 1 is passed into the inside of the magnetic separator 4 through the booster pump 3, and the magnetic particles in the liquid are adsorbed on the magnetic pole 41 by the magnetic separator 4.
  • the magnetic strength of the magnetic separator 4 is 0.3T ⁇ 2T, Different magnetic strengths are selected according to the amount of magnetic particles in the fluidized bed reactor 1 .
  • the separation of the magnetic particles and the liquid is completed, and the separated liquid is collected in the clear liquid tank 5 .
  • the magnetic pole 41 in the magnetic separator 4 can adopt a multi-column or single-column mesh structure, so as to increase the contact area between the magnetic pole 41 and the magnetic particles and provide adsorption.
  • the magnetic separator 4 is connected with a second backwashing system 13, and the magnetic particles on the magnetic poles 41 can be cleaned for the first time inside the magnetic separator 4 to realize partial regeneration of the magnetic particles.
  • the magnetic field in the magnetic separator 4 is turned off, and the magnetic particles are passed into the magnetic particle regeneration system 6 for the second cleaning.
  • the magnetic particle regeneration system 6 is connected with a first backwashing system 12, and the magnetic particles can be washed with a solvent or clear water. After several times of washing, the magnetic particles are purged and dried with gas to complete the regeneration process.
  • the magnetic particles are collected in the magnetic particle collection tank 7 and can be reused.
  • the magnetic particle collection tank 7 is connected with the magnetic particle storage tank 9 through a self-priming pump 8, and the magnetic particles after regeneration are stored in the magnetic particle storage tank 9.
  • the valve of the magnetic particle storage tank 9 can be opened to supplement the magnetic particles into the fluidized bed reactor 1 for use.
  • the fluidized bed purification system with magnetic particles can work continuously without interruption. After the magnetic particles react in the fluidized bed reactor 1, they are regenerated and added to the fluidized bed reactor 1 again. In order to keep the amount of magnetic particles in the fluidized bed reactor 1 constant, the fluidized bed reactor 1 is also connected with a magnetic particle adding tank 11 .
  • the magnetic particles in the magnetic particle addition tank 11 are new, and when the magnetic particles in the magnetic particle storage tank 9 are damaged and cannot be used, the new magnetic particles in the magnetic particle addition tank 11 can be replenished in time in the fluidized bed reactor 1 for use .

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Abstract

一种带有磁性粒子的流化床净化系统，包括依次连接的流化床反应器（1），磁性分离机（4），磁性粒子再生系统（6）和清液罐（5）；所述磁性分离机（4）通过管道分别连接清液罐（5）和磁性粒子再生系统（6）；所述流化床反应器（1）的外侧设有若干个磁场发生器（2），所述磁性粒子再生系统（6）连接有第一反洗系统（12），所述磁性分离机（4）还连接有第二反洗系统（13）。利用磁场带动磁性粒子转动代替传统的搅拌部件，降低能耗，提高反应效率；多磁场提供磁性粒子的扰动方向，增加磁性粒子之间的剪切力，减小磁性粒子表面团聚，使反应更加充分；磁性分离机（4）和磁性粒子再生系统（6）将磁性粒子重复使用，整个反应过程不间断，实现连续工作，提高工作效率。

Description

一种带有磁性粒子的流化床净化系统及其应用方法 技术领域
本发明涉及流化床过滤分离技术领域，尤其涉及一种带有磁性粒子的流化床净化系统及其应用方法。
背景技术
流化床反应器是一种利用气体或液体通过颗粒状固体层而使固体颗粒处于悬浮运动状态，并进行气固相反应过程或液固相反应过程的反应器。目前，流化床反应器主要应用于石油化工、精细化工、医药、食品、粮油、废渣处理等方面，如废水处理、催化剂回收再生等。
其中，废水中的污染物主要有机污染物、金属污染物，化工废水中可能还有其他一些大颗粒物质(如粉体、催化剂、树脂等)。在废水处理过程中通常是通过多道工序对不同污染物分别处理，工序繁琐，不仅处理工艺和影响处理效果的因素复杂，而且成本高。
现有的流化床反应器常用搅拌装置实现各种相介质的充分混合、反应，但是对于大型的流化床反应器搅拌效果不佳，能耗较高，于是有人对搅拌装置就行了改进，利用磁性转子或者磁性颗粒进行搅拌，发明了磁场流化床，但是在使用过程中，磁性转子或者磁性颗粒随着使用，其表面会聚集多种杂质，磁性就会减弱，磁场带动其搅动的效果也会随之减弱，影响反应，因此，需要停止工作，输入新的磁性转子或者磁性颗粒，影响工作效率。
此外，目前常用的磁场多是在流化床反应器底部或者顶部添加磁场带动转子工作，磁场方向单一，流化床反应器内的反应物随之转动起来之后，相互之间剪切力就会减弱，反应效果也会降低。
因此，如何实现利用磁场进行充分搅动的情况下，并保证流化床反应器能够连续工作，亟需解决。
有鉴于此，有必要对现有技术中的流化床反应器予以改进，以解决上述问题。
发明内容
本发明的目的一在于公开一种带有磁性粒子的流化床净化系统，通过磁场带动磁性粒子搅动待反应的物质，实现快速、高效的反应，并利用磁性粒子再生系统对磁性粒子进行再生，可以实现磁性粒子反复使用，流化床净化系统能够连续工作。另外，磁性粒子选用多孔结构的物质并在其表面添加各种功能团，同时可作为反应介质使用。
为实现上述目的，本发明提供了一种带有磁性粒子的流化床净化系统，包括依次连接的流化床反应器(1)，磁性分离机(4)，磁性粒子再生系统(6)和清液罐(5)；所述磁性分离机(4)通过管道分别连接清液罐(5)和磁性粒子再生系统(6)；所述流化床反应器(1)的外侧设有若干个磁场发生器(2)，所述磁性粒子再生系统(6)连接有第一反洗系统(12)，所述磁性分离机(4)还连接有第二反洗系统(13)。
在一些实施方式中，所述流化床反应器(1)的外侧沿径向或者轴向方向设有若干个相邻的磁场发生器(2)，所述相邻的磁场发生器(2)之间设有隔板。
在一些实施方式中，所述磁场发生器(2)由单组或多组电磁线圈组成。
在一些实施方式中，所述磁性粒子再生系统(6)的出液口分别连接第一反洗系统(12)和清液罐(5)，所述磁性粒子再生系统(6)的底部连接有磁性粒子收集罐(7)。
在一些实施方式中，所述磁性粒子收集罐(7)通过自吸泵(8)连接至磁性粒子储存罐(9)，所述磁性粒子储存罐(9)和流化床反应器(1)连接。
在一些实施方式中，所述清液罐(5)与磁性分离机(4)之间还设有保安过滤器(10)。
在一些实施方式中，所述流化床反应器(1)还连接有磁性粒子添加罐(11)。
在一些实施方式中，所述流化床反应器(1)底部设有曝气装置，所述流化床反应器(1)的进液口连接原液罐。
本发明的目的二在于公开一种所述带有磁性粒子的流化床净化系统的应用方法，通过该应用方法可以实现废水、废液处理的连续处理，磁性粒子的重复 使用。
为实现上述目的，本发明提供一种所述带有磁性粒子的流化床净化系统的应用方法，包括以下步骤：
步骤1：充液反应
向流化床反应器(1)中通入原液和磁性粒子，并开启磁场发生器(2)，通过磁场发生器(2)产生的磁场带动磁性粒子搅动原液进行反应；
步骤2：磁性粒子分离
将步骤1中反应后的液体通入磁性分离机(4)内，利用磁性分离机(4)将液体中的磁性粒子吸附在磁极(41)上，完成磁性粒子与液体的分离，分离后的液体通入清液罐(5)内收集；
步骤3：磁性粒子再生
关闭清液罐(5)进口处的阀门，开启磁性粒子再生系统(6)的进液阀门，并关闭磁性分离机(4)的磁场，磁性粒子从磁极(41)上脱落，进入到磁性粒子再生系统(6)内开始再生反应；
步骤4：收集磁性粒子
通过步骤3中磁性粒子再生，磁性粒子被收集在磁性粒子收集罐(7)内，可重复使用。
在一些实施方式中，所述步骤1中磁场发生器(2)是径向线圈或轴向线圈，所述径向线圈或轴向线圈通直流电后产生磁场强度。
在一些实施方式中，所述步骤2中，磁性分离机(4)的磁性强度0.3T～2T。
在一些实施方式中，所述磁性粒子为四层结构，其最内侧的第一层为磁核，第二层为致密包覆层，第三层为多孔包覆层，第四层为功能团层。
在一些实施方式中，所述磁核粒径范围10nm～1mm，所述致密包覆层层厚1μm～100μm，所述多孔包覆层层厚度5μm～1mm。
与现有技术相比，本发明的有益效果是：(1)利用磁场带动磁性粒子转动代替传统的搅拌部件，降低了能耗，提高了反应效率；(2)多磁场可以提供磁性粒子的扰动方向，增加磁性粒子之间的剪切力，减小磁性粒子表面团聚，使反应更加充分；(3)磁性分离机和磁性粒子再生系统可以将磁性粒子重复使用， 整个反应过程不间断，实现连续工作，提供了工作效率；(4)磁性粒子多孔结构高吸附性，其表面带有功能团还能作为反应介质使用。
附图说明
图1为本发明所示的带有磁性粒子的流化床净化系统的结构示意图；
附图标记说明：1、流化床反应器；2、磁场发生器；3、增压泵；4、磁性分离机；41、磁极；5、清液罐；6、磁性粒子再生系统；7、磁性粒子收集罐；8、自吸泵；9、磁性粒子储存罐；10、保安过滤器；11、磁性粒子添加罐；12、第一反洗系统；13、第二反洗系统。
具体实施方式
下面结合附图所示的各实施方式对本发明进行详细说明，但应当说明的是，这些实施方式并非对本发明的限制，本领域普通技术人员根据这些实施方式所作的功能、方法、或者结构上的等效变换或替代，均属于本发明的保护范围之内。
实施例1
如图1所示，本实施例提供了一种带有磁性粒子的流化床净化系统，包括依次连接的流化床反应器1，磁性分离机4，磁性粒子再生系统6和清液罐5；所述磁性分离4通过管道分别连接清液罐5和磁性粒子再生系统6；所述磁性粒子再生系统6连接有第一反洗系统12，所述磁性分离机4还连接有第二反洗系统13。
流化床反应器1的进液口连接原液罐。所述磁性粒子再生系统6的出液口分别连接第一反洗系统12和清液罐5，所述磁性粒子再生系统6的底部连接有磁性粒子收集罐7。磁性粒子再生系统6的顶部回液口还可以连接至流化床反应器1，以保证磁性粒子再生时，磁性粒子再生系统6时刻充满液体。
所示磁性粒子再生系统6是集束式过滤器或者动态陶瓷膜过滤系统，本实施例优选集束式过滤器，该集束式过滤器内设有多根过滤元件，在磁性粒子再生时，磁性粒子被拦截在过滤元件的表面，通过第一反洗系统12可对其进行洗 涤、反洗、反吹干燥等再生处理，处理后的磁性粒子排入磁性粒子收集罐7内待使用。
所述磁性粒子收集罐7通过自吸泵8连接至磁性粒子储存罐9，所述磁性粒子储存罐9和流化床反应器1连接。所述流化床反应器1还连接有磁性粒子添加罐11。在废水、废液处理过程中，磁性粒子可以及时补充至流化床反应器1内。
此外，所述清液罐5与磁性分离机4之间还设有保安过滤器10。以防止磁性分离机4未完全吸附磁性粒子导致清液罐5内的液体又被污染。
根据原液的种类、浓度及粘度情况，可以在所述流化床反应器1底部设有曝气装置。在处理高粘度、高浓度的原液时，可以打开流化床反应器1底部的曝气装置，增加原液的流动性。
本发明中，流化床反应器1的外侧设有若干个磁场发生器2，所述磁场发生器2沿径向或者轴向方向布置在流化床反应器1的外侧，所述磁场发生器2可以沿径向方向相邻布置、沿轴向方向相向布置，从而提供不同方向和/或强度的磁场。
根据流化床反应器1的结构及直径大小，所述磁场发生器2除了沿径向或轴向布置外，还可以与径向呈任意角度布置在流化床反应器1的外侧。
所述磁场发生器2由单组或多组电磁线圈组成。所述磁场发生器2是径向线圈或轴向线圈组成，所述径向线圈或轴向线圈通直流电后产生磁场强度。
如图1所示，本实施例中，流化床反应器1的外侧沿径向方向设有两组磁场发生器2，每组磁场发生器2位于同一圆周面上。根据流化床反应器1的直径大小，同组的磁场发生器2可以呈轴对称布置在流化床反应器1的两侧。其中，同侧上下相邻的磁场发生器2之间设有隔板，防止上下两组磁场发生器2产生的磁场相互影响。
本实施例中，所述磁性粒子为四层结构，其最内侧的第一层为磁核，第二层为致密包覆层，第三层为多孔包覆层，第四层为功能团层。所述磁核选用Fe3O4，所述磁核粒径范围10nm～1mm，所述致密包覆层层厚1μm～100μm，所述多孔包覆层层厚度5μm～1mm，多孔包覆层多孔结构增大了磁性粒子的吸 附性，第四层为功能团层，通过在多孔包覆层上嫁接各种功能基团，实现磁性粒子与原液中的物质进行化学反应，达到处理效果。
针对不同的待处理原液，如果原液中有需要吸附、脱附、催化等反应的物质，可利用带有功能基团的磁性粒子与之反应，实现净化处理。
通过磁场带动磁性粒子搅动待反应的物质，实现快速、高效的反应，并利用磁性粒子再生系统6对磁性粒子进行再生，可以实现磁性粒子反复使用，流化床净化系统连续工作。
本实施例中的带有磁性粒子的流化床净化系统，其应用方法，包括以下步骤：
步骤1：充液反应
向流化床反应器1中通入原液和磁性粒子，并开启磁场发生器2，通过磁场发生器2产生的磁场带动磁性粒子搅动原液进行反应。如果是高粘度、高浓度的原液或者原液内颗粒物较多时，还可以打开流化床反应器1底部的曝气装置，增加多组磁场发生器2，产生不同方向和强度的磁场，实现原液与磁性粒子的充分混合、搅动、反应。
步骤2：磁性粒子分离
将步骤1中反应后的液体通过增压泵3通入磁性分离机4内部，利用磁性分离机4将液体中的磁性粒子吸附在磁极41上，磁性分离机4的磁性强度0.3T～2T，根据流化床反应器1内磁性粒子的量选择不同的磁性强度。完成磁性粒子与液体的分离，分离后的液体通入清液罐5内收集。
其中，磁性分离机4中的磁极41可以选用多柱状或者单柱网状结构，以增大磁极41与磁性粒子接触面积，提供吸附性。
磁性分离机4连接有第二反洗系统13，可以在磁性分离机4内部对磁极41上的磁性粒子进行第一次清洗，实现部分磁性粒子再生。
步骤3：磁性粒子再生
关闭清液罐5进口处的阀门，开启磁性粒子再生系统6的进液阀门，并关闭磁性分离机4的磁场，磁性粒子从磁极41上脱落，进入到磁性粒子再生系统6内开始再生反应。
磁性粒子在磁性分离机4内完成第一次清洗后，关闭磁性分离机4内的磁场，磁性粒子通入磁性粒子再生系统6内，进行第二次清洗。
磁性粒子再生系统6连接有第一反洗系统12，可以使用溶剂或者清水对磁性粒子进行洗涤，多次洗涤之后，在利用气体对其吹扫干燥，完成再生处理。
步骤4：收集磁性粒子
通过步骤3中磁性粒子再生，磁性粒子被收集在磁性粒子收集罐7内，可重复使用。
如图1所示，磁性粒子收集罐7通过自吸泵8与磁性粒子储存罐9连接，再生处理后的磁性粒子被储存在磁性粒子储存罐9内，当流化床反应器1需要补充磁性粒子时，可以打开磁性粒子储存罐9的阀门，将磁性粒子补充到流化床反应器1中使用。
本实施例中，带有磁性粒子的流化床净化系统可以不间断地连续工作，磁性粒子在流化床反应器1中反应后，经过再生处理，再次加入到流化床反应器1中。为了保持流化床反应器1中的磁性粒子的量恒定，流化床反应器1还连接有磁性粒子添加罐11。磁性粒子添加罐11内的磁性粒子是新的，当磁性粒子储存罐9内的磁性粒子破损不能使用时，磁性粒子添加罐11内新的磁性粒子可以及时补充到流化床反应器1内使用。
上文所列出的一系列的详细说明仅仅是针对本发明的可行性实施方式的具体说明，它们并非用以限制本发明的保护范围，凡未脱离本发明技艺精神所作的等效实施方式或变更均应包含在本发明的保护范围之内。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (13)

  1. 一种带有磁性粒子的流化床净化系统，其特征在于，包括依次连接的流化床反应器(1)，磁性分离机(4)，磁性粒子再生系统(6)和清液罐(5)；所述磁性分离机(4)通过管道分别连接清液罐(5)和磁性粒子再生系统(6)；
    所述流化床反应器(1)的外侧设有若干个磁场发生器(2)，所述磁性粒子再生系统(6)连接有第一反洗系统(12)，所述磁性分离机(4)还连接有第二反洗系统(13)。
  2. 根据权利要求1所述带有磁性粒子的流化床净化系统，其特征在于，所述流化床反应器(1)的外侧沿径向或者轴向方向设有若干个相邻的磁场发生器(2)，所述相邻的磁场发生器(2)之间设有隔板。
  3. 根据权利要求2所述带有磁性粒子的流化床净化系统，其特征在于，所述磁场发生器(2)由单组或多组电磁线圈组成。
  4. 根据权利要求3所述带有磁性粒子的流化床净化系统，其特征在于，所述磁性粒子再生系统(6)的出液口分别连接第一反洗系统(12)和清液罐(5)，所述磁性粒子再生系统(6)的底部连接有磁性粒子收集罐(7)。
  5. 根据权利要求4所述带有磁性粒子的流化床净化系统，其特征在于，所述磁性粒子收集罐(7)通过自吸泵(8)连接至磁性粒子储存罐(9)，所述磁性粒子储存罐(9)和流化床反应器(1)连接。
  6. 根据权利要求5所述带有磁性粒子的流化床净化系统，其特征在于，所述清液罐(5)与磁性分离机(4)之间还设有保安过滤器(10)。
  7. 根据权利要求6所述带有磁性粒子的流化床净化系统，其特征在于，所述流化床反应器(1)还连接有磁性粒子添加罐(11)。
  8. 根据权利要求7所述带有磁性粒子的流化床净化系统，其特征在于，所述流化床反应器(1)底部设有曝气装置，所述流化床反应器(1)的进液口连接原液罐。
  9. 一种如权利要求1～8任一项所述带有磁性粒子的流化床净化系统的应用方法，其特征在于，包括以下步骤：
    步骤1：充液反应
    向流化床反应器(1)中通入原液和磁性粒子，并开启磁场发生器(2)，通过磁场发生器(2)产生的磁场带动磁性粒子搅动原液进行反应；
    步骤2：磁性粒子分离
    将步骤1中反应后的液体通入磁性分离机(4)内，利用磁性分离机(4)将液体中的磁性粒子吸附在磁极(41)上，完成磁性粒子与液体的分离，分离后的液体通入清液罐(5)内收集；
    步骤3：磁性粒子再生
    关闭清液罐(5)进口处的阀门，开启磁性粒子再生系统(6)的进液阀门，并关闭磁性分离机(4)的磁场，磁性粒子从磁极(41)上脱落，进入到磁性粒子再生系统(6)内开始再生反应；
    步骤4：收集磁性粒子
    通过步骤3中磁性粒子再生，磁性粒子被收集在磁性粒子收集罐(7)内，可重复使用。
  10. 根据权利要求9所述带有磁性粒子的流化床净化系统的应用方法，其特征在于，所述步骤1中磁场发生器(2)是径向线圈或轴向线圈，所述径向线圈或轴向线圈通直流电后产生磁场强度。
  11. 根据权利要求9所述带有磁性粒子的流化床净化系统的应用方法，其特征在于，所述步骤2中，磁性分离机(4)的磁性强度0.3T～2T。
  12. 根据权利要求9所述带有磁性粒子的流化床净化系统的应用方法，其特征在于，所述磁性粒子为四层结构，其最内侧的第一层为磁核，第二层为致密包覆层，第三层为多孔包覆层，第四层为功能团层。
  13. 根据权利要求12所述带有磁性粒子的流化床净化系统的应用方法，其特征在于，所述磁核粒径范围10nm～1mm，所述致密包覆层层厚1μm～100μm，所述多孔包覆层层厚度5μm～1mm。
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