WO2023232157A1 - Co-precipitation reaction system - Google Patents

Co-precipitation reaction system Download PDF

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Publication number
WO2023232157A1
WO2023232157A1 PCT/CN2023/104747 CN2023104747W WO2023232157A1 WO 2023232157 A1 WO2023232157 A1 WO 2023232157A1 CN 2023104747 W CN2023104747 W CN 2023104747W WO 2023232157 A1 WO2023232157 A1 WO 2023232157A1
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WIPO (PCT)
Prior art keywords
filter
clear liquid
slurry
concentrator
concentrated
Prior art date
Application number
PCT/CN2023/104747
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French (fr)
Chinese (zh)
Inventor
何志
何珂桥
赵聪
杨光耀
何劲松
康彬
Original Assignee
成都思达能环保设备有限公司
四川思达能环保科技有限公司
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Application filed by 成都思达能环保设备有限公司, 四川思达能环保科技有限公司 filed Critical 成都思达能环保设备有限公司
Publication of WO2023232157A1 publication Critical patent/WO2023232157A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/04—Combinations of filters with settling tanks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the embodiments of this application relate to a co-precipitation reaction system.
  • the co-precipitation reaction system is suitable for the preparation of positive electrode material precursors for lithium ion secondary batteries, and is especially suitable for the preparation of ternary precursors.
  • the chemical co-precipitation method is widely used in liquid-phase chemical synthesis of powder materials.
  • an appropriate precipitant is added to the raw material solution to co-precipitate the components that have been mixed evenly in the solution in a stoichiometric ratio, or in the solution
  • an intermediate product is reacted and precipitated, and then it is calcined and decomposed to prepare the target product.
  • the particle size and morphology of the product can be controlled according to experimental conditions, and the effective components in the product can be uniformly mixed at the atomic and molecular levels.
  • nickel sulfate or nickel chloride
  • cobalt sulfate or cobalt chloride
  • manganese sulfate or manganese chloride
  • Alkaline solution use ammonia water of a certain concentration as the complexing agent, then add the mixed salt solution, alkali solution and complexing agent into the reaction kettle at a certain flow rate, control the stirring rate of the reaction kettle, the temperature and pH value of the reaction slurry, and reaction atmosphere (at present, the reaction process is generally required to be completed under nitrogen protection), etc., so that the salt and alkali neutralize to generate ternary precursor crystal nuclei and gradually grow up.
  • the particle size reaches a predetermined value, the reaction product is filtered and washed , dry to obtain the ternary precursor.
  • a filter concentrator is currently deployed next to the reactor to implement "concentration outside the reactor".
  • the filter concentrator is equipped with a filter element and a stirring structure. After filtering the reaction slurry through the filter element, the clear liquid can be output from the filter concentrator. The clear liquid can be reused as mother liquor for the reaction, while the concentrated liquid in the filter concentrator is returned to the reaction kettle through the concentrated slurry reflux structure.
  • the stirring structure in the filter concentrator generally includes a main shaft located in the filter concentrator and a stirring paddle installed on the main shaft.
  • the main shaft is driven by a motor outside the filter concentrator.
  • the filter elements are spaced around the periphery of the stirring paddle. When the stirring paddle rotates, it can The slurry is stirred to prevent the particles in the slurry from settling and prolong the formation time of the filter cake on the filter element.
  • the internal structural design of the above-mentioned filter concentrator results in a larger volume of the filter concentrator, causing the reaction slurry to stay in the filter concentrator outside the reactor for a longer time.
  • the reaction process is affected by a variety of process parameters. Once the environment changes, It will affect the reaction. Therefore, when the slurry stays in the filter concentrator for a long time, it will affect the reaction and the consistency of the particle size of the ternary precursor.
  • reaction kettle can be called an integrated equipment for co-precipitation reaction and filtration and concentration.
  • the reaction slurry is always in the same environment, eliminating the impact of a separate deployment of a filter concentrator on the reaction.
  • the integrated equipment of co-precipitation reaction and filtration and concentration has higher requirements on the stability of the filter element against material damage. Because once the material of the filter element is damaged, the material falling off the filter element will be mixed into the reaction slurry, causing contamination of the reaction slurry.
  • the purge system mainly includes pipelines, valves, backwashers and other components. These components are temporarily installed on site following the on-site installation of the filter concentrator or the integrated equipment for co-precipitation reaction and filtration and concentration. The construction intensity is high and the time is long, which affects the project construction progress.
  • the embodiments of the present application provide a co-precipitation reaction system and a filtration and concentration device for the co-precipitation reaction system to solve the technical problem that the large volume of the filtration concentrator affects the reaction.
  • a co-precipitation reaction system including: a co-precipitation reaction unit, the co-precipitation reaction unit includes a reaction kettle, the reaction kettle has an outer shell and an inner cavity, and the outer shell of the reaction kettle is A raw material feeding structure, a slurry to be concentrated discharge structure and a concentrated slurry reflux structure are respectively provided. The raw material feeding structure, the slurry to be concentrated discharge structure and the concentrated slurry reflux structure are respectively connected with the reaction kettle.
  • the inner cavity of the reaction kettle is connected, and a stirring structure is provided in the inner cavity of the reaction kettle; a filtration and concentration unit, the filtration and concentration unit includes a filtration and concentrator, the filtration and concentrator has a shell and a filter core, and the filter core is in the filtration and concentration unit.
  • a raw liquid cavity and a clear liquid cavity are formed in the shell of the filter concentrator.
  • the shell of the filter concentrator is respectively provided with a feed structure for the slurry to be concentrated, a discharge structure for the concentrated slurry, and a discharge structure for the clear liquid.
  • the slurry to be concentrated is The feeding structure and the concentrated slurry discharging structure are respectively connected with the original liquid cavity, and the clear liquid discharging structure is connected with the clear liquid cavity; wherein, the slurry to be concentrated discharging structure is used to communicate with the original liquid cavity.
  • the feed structure of the slurry to be concentrated is connected, the discharge structure of the concentrated slurry is used to connect with the reflux structure of the concentrated slurry, and the raw material feed structure is used to connect with the co-precipitation reaction raw material supply equipment, so
  • the clear liquid discharge structure is used to connect with the clearing system; in the filter concentrator, the filter element has a first edge and a second edge that are perpendicular to each other, and the area of the filter surface of the filter element is basically determined by the third edge.
  • the length of one edge is determined by the product of the length of the second edge, the direction of the length of the first edge is consistent with the direction of the central axis of the housing of the filter concentrator, and the feed structure of the slurry to be concentrated is consistent with the direction of the casing of the filter concentrator.
  • the concentrated slurry discharging structures are respectively arranged on the shell of the filter concentrator at both ends in the direction of the central axis and are respectively connected to both ends of the original liquid chamber; if they are perpendicular to the central axis and parallel
  • the plane intersecting the filter surface of the filter element is a cross section, then: on the cross section, the original liquid chamber is distributed in the form of a first figure, the first figure is a closed figure, and the shape of the closed figure It is circular, annular or polygonal, and the cross-section is located in the housing of the filter concentrator and the area except the first figure is basically composed of the It consists of two figures and a third figure, the clear liquid chamber is distributed in the form of the second figure, the filter material of the filter element is distributed in the form of the third figure, and the central axis is in the cross section The corresponding center point on is close to or located in the first figure, the second figure or the third figure.
  • the filtering and concentrating unit includes N filtering and concentrating components, and the N is an integer ⁇ 1.
  • the filtering and concentrating components are connected by multiple filtering and concentrating devices.
  • the filtering and concentrating components It is a tubular filter concentrator; the tubular filter concentrator has a tubular shell and a filter element whose shape and size are adapted to the pipes in the shell.
  • the filter element is provided with an axial channel, and the axial channel constitutes The original liquid cavity or the clear liquid cavity; when the axial channel constitutes the original liquid cavity, the clear liquid cavity is formed between the pipe in the housing and the filter element.
  • the original liquid chamber is formed between the pipe in the housing and the filter element; the feed structure of the slurry to be concentrated and the concentrated slurry of the tubular filter concentrator in the filter concentrator assembly
  • the material discharging structures are connected end to end in order so that the raw liquid cavities of these tubular filter concentrators are connected in series into a flow path.
  • the first feed structure of the slurry to be concentrated in the flow path is connected to the discharging structure of the slurry to be concentrated.
  • the final concentrated slurry discharge structure is connected to the concentrated slurry return structure.
  • the clear liquid discharge structure is provided on the wall of the shell of the tubular filter concentrator.
  • the tubular filter concentrators in the filter concentrator assembly are arranged in parallel and spaced apart, and the feed structure of the slurry to be concentrated and the discharge structure of the concentrated slurry between adjacent tubular filter concentrators are
  • the raw liquid chambers between adjacent tubular filter concentrators are connected in series through elbow connections.
  • the elbow in the filter concentrator assembly is arranged horizontally.
  • the filtration and concentration unit includes more than two filtration and concentrator assemblies, and the two or more filtration and concentrator assemblies are arranged one above the other.
  • the clear liquid discharge structures of different tubular filter concentrators in the same filter concentrator assembly are merged together to form a set of clear liquid discharge structures, or different tubular filter concentrators in different filter concentrator assemblies are merged together to form a set of clear liquid discharge structures.
  • the clear liquid discharge structures of the concentrator are brought together to form a group of clear liquid discharge structures; the group of clear liquid discharge structures corresponds to a group of filter elements, and the clear liquid discharge system processes the same group of filter elements according to the group of filter elements.
  • the filter element is backflushed and regenerated at the same time.
  • the cleaning system includes a clear liquid transportation and filter element backwashing pipeline system
  • the clear liquid transportation and filter element backwashing pipeline system includes a clear liquid transportation pipe corresponding to the group of the filter element.
  • the backflush medium conveying pipe also corresponds to the group of the filter element one-to-one.
  • the output end of the clear liquid conveying pipe is connected to the clear liquid conveying main pipe through a control valve set one to one.
  • the clear liquid conveying pipe has The input end is connected to a clear liquid input interface for connecting to the clear liquid discharge structure of the corresponding filter element group.
  • the input end of the backflush medium delivery pipe is connected to the backflush medium delivery main pipe through a one-to-one control valve.
  • the output end of the recoil medium transport pipe is connected to the bypass of the one-to-one corresponding clear liquid transport pipe;
  • the cleaning system also includes a recoil device, and the shell of the recoil device is respectively provided with a recoil medium input structure and a recoil medium output structure, the recoil medium output structure is connected with the recoil medium transport main pipe.
  • each filter concentrator assembly is connected to the to-be-described There is a flow regulating device between the concentrated slurry discharge structures, and a back pressure control device is installed between the control valve on each clear liquid delivery pipe and the clear liquid delivery main pipe.
  • the recoil medium input structure of the recoil device includes a recoil fluid input structure and a compressed gas input structure
  • the recoil fluid overflow port is also provided on the outer shell of the recoil device, so The recoil overflow port is connected to the output port of the clear liquid delivery main pipe through a recoil overflow pipe, then the output port of the clear liquid delivery main pipe is overall higher than the recoil overflow port, and the The recoil overflow pipe is provided with an ascending section.
  • a vapor-liquid separator is included.
  • the casing of the vapor-liquid separator is respectively provided with a vapor-liquid mixed phase input structure, a separated liquid phase output structure, and a separated gas phase output structure.
  • the vapor-liquid mixing The phase input structure is connected to the concentrated slurry discharge structure, and the separated liquid phase output structure is connected to the concentrated slurry return structure.
  • a return pipe is included, one end of the return pipe is connected to the feed structure of the slurry to be concentrated, and the other end is connected to the discharge structure of the concentrated slurry; the return pipe is provided with at least There are valves and valves in the heat exchange cooler.
  • a feed pump is provided between the co-precipitation reaction unit and the filtration concentration unit.
  • a filtration and concentration device for a co-precipitation reaction system includes a reaction kettle, the reaction kettle has a shell and an inner cavity, and the shell of the reaction kettle is A raw material feeding structure, a slurry to be concentrated discharge structure and a concentrated slurry reflux structure are respectively provided.
  • the raw material feeding structure, the slurry to be concentrated discharge structure and the concentrated slurry reflux structure are respectively connected with the reaction kettle.
  • the inner cavity of the reaction kettle is connected, and a stirring structure is provided in the inner cavity of the reaction kettle; it includes: a filtration concentration unit, the filtration concentration unit includes a filter concentrator, the filter concentrator has a shell and a filter core, and the filter core is in the A raw liquid cavity and a clear liquid cavity are formed in the shell of the filter concentrator.
  • the shell of the filter concentrator is respectively provided with a feed structure for the slurry to be concentrated, a discharge structure for the concentrated slurry, and a discharge structure for the clear liquid.
  • the concentrated slurry feed structure and the concentrated slurry discharge structure are respectively connected with the original liquid chamber, and the clear liquid discharge structure is connected with the clear liquid chamber; wherein, the feed structure of the slurry to be concentrated is It is used to connect to the discharge structure of the slurry to be concentrated, the discharge structure of the concentrated slurry is used to connect to the reflux structure of the concentrated slurry, and the clear liquid discharge structure is used to connect to the clearing system.
  • the filter element has a first edge and a second edge that are perpendicular to each other, and the area of the filter surface of the filter element is basically determined by the length of the first edge and the length of the second edge.
  • the product determines that the direction of the length of the first edge is consistent with the direction of the central axis of the housing of the filter concentrator, and the feed structure of the slurry to be concentrated and the discharge structure of the concentrated slurry are respectively arranged at the
  • the parts of the shell of the filter concentrator located at both ends in the direction of the central axis are connected to both ends of the original liquid chamber respectively; if a plane perpendicular to the central axis and intersecting with the filtering surface of the filter element is taken as the cross section , then: on the cross section, the original liquid chamber is distributed in the form of a first figure, the first figure is a closed figure, the shape of the closed figure is a circle, annular or a polygon, and on the cross section
  • the area located in the housing of the filter concentrator and except for the first pattern is basically composed of a second pattern and a third pattern.
  • the clear liquid chamber is distributed in the form of the second pattern.
  • the filter element The filter material is distributed in the form of the third figure, and the corresponding center point of the central axis on the cross section is close to or located in the first figure, the second figure or the third figure.
  • the filtering and concentrating unit includes N filtering and concentrating components, and the N is an integer ⁇ 1.
  • the filtering and concentrating components are connected by multiple filtering and concentrating devices.
  • the filtering and concentrating components It is a tubular filter concentrator; the tubular filter concentrator has a tubular shell and a filter element whose shape and size are adapted to the pipes in the shell.
  • the filter element is provided with an axial channel, and the axial channel constitutes The original liquid cavity or the clear liquid cavity; when the axial channel constitutes the original liquid cavity, the clear liquid cavity is formed between the pipe in the housing and the filter element.
  • the original liquid chamber is formed between the pipe in the housing and the filter element; the feed structure of the slurry to be concentrated and the concentrated slurry of the tubular filter concentrator in the filter concentrator assembly
  • the material discharging structures are connected end to end in order so that the raw liquid cavities of these tubular filter concentrators are connected in series into a flow path.
  • the first feed structure of the slurry to be concentrated in the flow path is connected to the discharging structure of the slurry to be concentrated.
  • the final concentrated slurry discharge structure is connected to the concentrated slurry return structure.
  • the clear liquid discharge structure is provided on the wall of the shell of the tubular filter concentrator.
  • the tubular filter concentrators in the filter concentrator assembly are arranged in parallel and spaced apart, and the feed structure of the slurry to be concentrated and the discharge structure of the concentrated slurry between adjacent tubular filter concentrators are
  • the raw liquid chambers between adjacent tubular filter concentrators are connected in series through elbow connections.
  • the elbow in the filter concentrator assembly is arranged horizontally.
  • the filtration and concentration unit includes more than two filtration and concentrator assemblies, and the two or more filtration and concentrator assemblies are arranged one above the other.
  • the clear liquid discharge structures of different tubular filter concentrators in the same filter concentrator assembly are merged together to form a set of clear liquid discharge structures, or different tubular filter concentrators in different filter concentrator assemblies are merged together to form a set of clear liquid discharge structures.
  • the clear liquid discharge structures of the concentrator are brought together to form a group of clear liquid discharge structures; the group of clear liquid discharge structures corresponds to a group of filter elements, and the clear liquid discharge system processes the same group of filter elements according to the group of filter elements.
  • the filter element is backflushed and regenerated at the same time.
  • the cleaning system includes a clear liquid transportation and filter element backwashing pipeline system
  • the clear liquid transportation and filter element backwashing pipeline system includes a clear liquid transportation pipe corresponding to the group of the filter element.
  • the backflush medium conveying pipe also corresponds to the group of the filter element one-to-one.
  • the output end of the clear liquid conveying pipe is connected to the clear liquid conveying main pipe through a control valve set one to one.
  • the clear liquid conveying pipe has The input end is connected to a clear liquid input interface for connecting to the clear liquid discharge structure of the corresponding filter element group.
  • the input end of the backflush medium delivery pipe is connected to the backflush medium delivery main pipe through a one-to-one control valve.
  • the output end of the recoil medium transport pipe is connected to the bypass of the one-to-one corresponding clear liquid transport pipe;
  • the cleaning system also includes a recoil device, and the shell of the recoil device is respectively provided with a recoil medium input structure and a recoil medium output structure, the recoil medium output structure is connected with the recoil medium transport main pipe.
  • each filter concentrator assembly is connected to the to-be-described There is a flow regulating device between the concentrated slurry discharge structures, and a back pressure control device is installed between the control valve on each clear liquid delivery pipe and the clear liquid delivery main pipe.
  • the recoil medium input structure of the recoil device includes a recoil fluid input structure and a compressed gas input structure
  • the recoil fluid overflow port is also provided on the outer shell of the recoil device, so The recoil overflow port is connected to the output port of the clear liquid delivery main pipe through a recoil overflow pipe, then the output port of the clear liquid delivery main pipe is overall higher than the recoil overflow port, and the The recoil overflow pipe is provided with an ascending section.
  • a vapor-liquid separator is included.
  • the casing of the vapor-liquid separator is respectively provided with a vapor-liquid mixed phase input structure, a separated liquid phase output structure, and a separated gas phase output structure.
  • the vapor-liquid mixing The phase input structure is connected to the concentrated slurry discharge structure, and the separated liquid phase output structure is connected to the concentrated slurry return structure.
  • a return pipe is included, one end of the return pipe is connected to the feed structure of the slurry to be concentrated, and the other end is connected to the discharge structure of the concentrated slurry; the return pipe is provided with at least There are valves and valves in the heat exchange cooler.
  • the above-mentioned co-precipitation reaction system and the filtration and concentration device used in the co-precipitation reaction system have redesigned the internal structure of the filtration concentrator and canceled the original stirring structure.
  • the slurry can be moved along the central axis of the casing of the filtration concentrator.
  • the flow direction is in the raw liquid cavity of the filter concentrator to avoid the particles in the slurry from blocking the raw liquid cavity and prolong the formation time of the filter cake on the filter element.
  • the diameter of the filter concentrator can be significantly reduced, effectively reducing the residence time of the reaction slurry in the filter concentrator outside the reactor, greatly reducing the impact of a separate deployment of the filter concentrator on the reaction, and ensuring Consistency in particle size of ternary precursors.
  • Figure 1 is a schematic diagram of a co-precipitation reaction system according to an embodiment of the present application.
  • FIG 2 is a schematic diagram of the filter concentrator assembly in the system shown in Figure 1.
  • FIG 3 is an internal schematic diagram of the filter concentrator in the assembly shown in Figure 2.
  • Figure 4 is a cross-sectional schematic diagram of a filter concentrator in a co-precipitation reaction system according to an embodiment of the present application.
  • Figure 5 is a cross-sectional schematic diagram of a filter concentrator in a co-precipitation reaction system according to an embodiment of the present application.
  • Figure 6 is a cross-sectional schematic diagram of a filter concentrator in a co-precipitation reaction system according to an embodiment of the present application.
  • Figure 7 is a three-dimensional structural diagram of the clearing system in a co-precipitation reaction system according to an embodiment of the present application.
  • Figure 8 is a three-dimensional structural diagram of the system shown in Figure 7 from another angle.
  • Figure 9 is a three-dimensional structural diagram of the system shown in Figure 7 from another angle.
  • Figure 10 is a three-dimensional structural diagram of the system shown in Figure 7 from another angle.
  • Figure 11 is a three-dimensional structural diagram of the system shown in Figure 10 after the electrical box is hidden.
  • Figure 12 is a main schematic diagram of the system shown in Figure 7.
  • the first co-precipitation reaction system The first co-precipitation reaction system
  • the first coprecipitation reaction system mainly includes: a coprecipitation reaction unit and a filtration and concentration unit.
  • the filtration and concentration unit can also include the following cleaning system.
  • the co-precipitation reaction unit includes a reaction kettle.
  • the reaction kettle has an outer shell and an inner cavity.
  • the outer shell of the reaction kettle is respectively provided with a raw material feeding structure, a slurry discharging structure to be concentrated and a concentrated slurry reflux structure.
  • the raw material feeding structure, the slurry to be concentrated slurry discharging structure and the concentrated slurry reflux structure are respectively connected with the inner cavity of the reaction kettle, and a stirring structure is provided in the inner cavity of the reaction kettle.
  • the filtration concentration unit includes a filtration concentrator.
  • the filtration concentrator has a shell and a filter core.
  • the filter core forms a raw liquid cavity and a clear liquid cavity in the shell of the filter concentrator.
  • the shell of the filter concentrator is respectively provided with
  • the feed structure for the slurry to be concentrated and the discharge structure for the concentrated slurry are respectively connected with the original liquid cavity, so
  • the clear liquid discharging structure is connected with the clear liquid chamber.
  • the filter concentrator is also equipped with a stirring structure.
  • the stirring structure in the filter concentrator includes a main shaft located in the filter concentrator and a stirring paddle installed on the main shaft.
  • the main shaft is driven by a motor outside the filter concentrator.
  • the filter elements in the filter concentrator are arranged at intervals around the stirring paddle. When the stirring paddle rotates, the slurry can be stirred to prevent the particles in the slurry from settling and prolong the formation time of the filter cake on the filter element.
  • the discharge structure of the slurry to be concentrated is used to connect with the feed structure of the slurry to be concentrated
  • the discharge structure of the concentrated slurry is used to connect with the reflux structure of the concentrated slurry
  • the raw material The feed structure is used to connect with the reaction raw material supply equipment of the co-precipitation clearing system
  • the clear liquid discharge structure is used to connect with the clearing system.
  • the above-mentioned raw material feed structure, to-be-concentrated slurry discharge structure, concentrated slurry reflux junction, to-be-concentrated slurry feed structure, concentrated slurry discharge structure, and clear liquid discharge structure may each include corresponding pipeline interfaces. , there are also valves on the pipeline interface when necessary.
  • nickel sulfate or nickel chloride
  • cobalt sulfate or cobalt chloride
  • manganese sulfate or manganese chloride
  • the salt solution configure the sodium hydroxide into an alkali solution with a certain molar concentration, use a certain concentration of ammonia water as the complexing agent, and then add the mixed salt solution, alkali solution and complexing agent to the reaction through the raw material feed structure at a certain flow rate Kettle, control the stirring rate of the reaction kettle, the temperature and pH value of the reaction slurry, and the reaction atmosphere (currently the reaction process is generally required to be completed under nitrogen protection), etc., so that the salt and alkali can neutralize to generate ternary precursor crystal nuclei. and gradually grew up.
  • the reaction raw materials are added to the reaction kettle, part of the reaction slurry in the reaction kettle is pumped into the filter concentrator.
  • the filter concentrator is equipped with a filter element and a stirring structure, and the reaction slurry is processed through the filter element. After filtration, the clear liquid can be output from the filter concentrator, and the clear liquid can be reused as mother liquor for the reaction, while the concentrated liquid in the filter concentrator is returned to the reaction kettle through the concentrated slurry reflux structure.
  • the stirring paddle in the filtration concentrator rotates to stir the slurry, preventing the particles in the slurry from settling and prolonging the formation time of the filter cake on the filter element.
  • the defects of the first co-precipitation reaction system include: first, the internal structural design of the filter concentrator results in a larger volume of the filter concentrator, causing the reaction slurry to stay in the filter concentrator outside the reactor for a long time, and the reaction process is Affected by a variety of process parameters, once the environment changes, it will affect the reaction. Therefore, when the slurry stays in the filter concentrator for a long time, it will affect the reaction and the consistency of the particle size of the ternary precursor. Second, when processing high-concentration slurry, the formation time of the filter element on the surface of the filter element is short, and the filtration flux decreases rapidly.
  • the slurry cannot be dispersed for a long time after forming a filter cake, causing the particles to agglomerate and affecting the consistency of the product morphology.
  • the tank and stirring structure of the filter concentrator are larger, resulting in higher manufacturing and use costs.
  • the motor of the stirring structure has high power and high energy consumption.
  • the second coprecipitation reaction system cancels the filter concentrator and installs the filter element of the filter concentrator directly in the reaction kettle.
  • the reactor can be called an integrated equipment for co-precipitation reaction and filtration and concentration.
  • the integrated equipment for co-precipitation reaction and filtration and concentration includes a reaction kettle and a filter element assembled together.
  • the reaction kettle has an outer shell and an inner cavity.
  • the outer shell of the reaction kettle is respectively provided with a raw material feeding structure, Concentrated slurry discharging structure and clear liquid discharging structure, the inner cavity of the reaction kettle is provided with a stirring structure, and the filter element is installed in the shell of the filter concentrator to form a raw liquid cavity and a clear liquid cavity.
  • the inner cavity of the reaction kettle is connected to the original liquid cavity, the raw material feeding structure and the concentrated slurry discharging structure are respectively connected to the inner cavity of the reaction kettle, and the raw material feeding structure is used for co-precipitation reaction.
  • the raw material supply equipment is connected, the clear liquid discharging structure is connected with the clear liquid chamber, and the clear liquid discharging structure is used to connect with the clearing system.
  • reaction and filtration concentration are all carried out in the integrated equipment of co-precipitation reaction and filtration concentration, the reaction slurry is always in the same environment, eliminating the impact of a separate deployment of a filter concentrator on the reaction.
  • the integrated equipment of co-precipitation reaction and filtration and concentration has higher requirements on the stability of the filter element against material damage. Because once the material of the filter element is damaged, the material falling off the filter element will be mixed into the reaction slurry, causing contamination of the reaction slurry.
  • the second co-precipitation reaction system cannot solve the problem that when the integrated equipment of co-precipitation reaction and filtration and concentration processes high-concentration slurry, the formation time of the filter element surface is short, and the filtration flux is rapidly reduced; the slurry cannot be filtered for a long time after forming a filter cake. to disperse, causing the particles to agglomerate, affecting the consistency of the product morphology; the tank and stirring structure of the co-precipitation reaction and filtration concentration integrated equipment are larger, resulting in higher manufacturing and use costs; the motor power of the stirring structure is large, High energy consumption and other issues.
  • the purge system mainly includes pipelines, valves, backwashers and other components. These components are temporarily installed on site following the on-site installation of the filter concentrator or the integrated equipment for co-precipitation reaction and filtration and concentration. The construction intensity is high and the time is long, which affects the project construction progress.
  • this application proposes the following embodiments to provide corresponding solutions to at least one of the above problems.
  • a co-precipitation reaction system includes a co-precipitation reaction unit and a filtration and concentration unit.
  • the filtration and concentration unit can also include the following cleaning system.
  • the co-precipitation reaction unit includes a reaction kettle.
  • the reaction kettle has an outer shell and an inner cavity.
  • the outer shell of the reaction kettle is respectively provided with a raw material feeding structure, a slurry discharging structure to be concentrated and a concentrated slurry reflux structure.
  • the raw material feeding structure, the slurry to be concentrated slurry discharging structure and the concentrated slurry reflux structure are respectively connected with the inner cavity of the reaction kettle, and a stirring structure is provided in the inner cavity of the reaction kettle.
  • the filtration concentration unit includes a filtration concentrator.
  • the filtration concentrator has a shell and a filter core.
  • the filter core forms a raw liquid cavity and a clear liquid cavity in the shell of the filter concentrator.
  • the shell of the filter concentrator is respectively provided with
  • the feed structure for the slurry to be concentrated and the discharge structure for the concentrated slurry are respectively connected with the original liquid cavity, so
  • the clear liquid discharging structure is connected with the clear liquid chamber.
  • the discharge structure of the slurry to be concentrated is used to connect with the feed structure of the slurry to be concentrated
  • the discharge structure of the concentrated slurry is used to connect with the reflux structure of the concentrated slurry
  • the raw material The feeding structure is used to connect with the co-precipitation reaction raw material supply equipment
  • the clear liquid discharging structure is used to connect with the clearing system.
  • the filter element has a first edge and a second edge that are perpendicular to each other, and the area of the filter surface of the filter element is basically determined by the product of the length of the first edge and the length of the second edge. It is determined that the direction of the length of the first edge is consistent with the direction of the central axis of the housing of the filter concentrator, and the feed structure of the slurry to be concentrated and the discharge structure of the concentrated slurry are respectively arranged on the The parts of the shell of the filter concentrator located at both ends in the direction of the central axis are connected to both ends of the original liquid chamber respectively.
  • the original liquid chamber is distributed in the form of a first figure, and the first
  • the figure is a closed figure, the shape of the closed figure is a circle, an annular or a polygon, and the cross-section is located in the shell of the filter concentrator and the area except the first figure is basically composed of the second figure and
  • the third pattern is composed of the clear liquid chamber distributed in the form of the second pattern, the filter material of the filter element distributed in the form of the third pattern, and the corresponding position of the central axis on the cross section
  • the center point is close to or located in the first figure, the second figure or the third figure.
  • FIG 1 is a schematic diagram of a co-precipitation reaction system according to an embodiment of the present application.
  • Figure 2 is a schematic diagram of the filter concentrator assembly in the system shown in Figure 1.
  • Figure 3 is an internal schematic diagram of the filter concentrator in the assembly shown in Figure 2.
  • a co-precipitation reaction system includes a co-precipitation reaction unit (not shown in the figure) and a filtration and concentration unit.
  • the co-precipitation reaction unit includes a reaction kettle, which has an outer shell and an inner cavity.
  • the outer shell of the reaction kettle is respectively provided with a raw material feeding structure, a slurry discharging structure A to be concentrated, and a concentrated slurry reflux structure.
  • the raw material feeding structure, the slurry to be concentrated slurry discharging structure A and the concentrated slurry reflux structure B are respectively connected with the inner cavity of the reaction kettle, and a stirring structure is provided in the inner cavity of the reaction kettle.
  • the filtration concentration unit includes a filtration concentrator 10.
  • the filtration concentrator 10 has a housing 11 and a filter core 12.
  • the filter core 12 forms a raw liquid chamber 13 and a clear liquid chamber 14 in the housing 11 of the filtration concentrator.
  • the housing 11 of the filter concentrator 10 is respectively provided with a feed structure 15 for the slurry to be concentrated, a discharge structure 16 for the concentrated slurry, and a discharge structure 17 for the clear liquid.
  • the slurry discharging structure 16 is connected with the original liquid chamber 13 respectively, and the clear liquid discharging structure 17 is connected with the clear liquid chamber 14 .
  • the to-be-concentrated slurry discharge structure A is used to connect to the to-be-concentrated slurry feed structure 15, and the concentrated slurry discharge structure 16 is used to connect to the concentrated slurry return structure B , the raw material feed structure is used to connect with the co-precipitation reaction raw material supply equipment, and the clear liquid discharge structure 17 is used to connect with the clearing system 200.
  • the filtering and concentrating unit includes N filtering and concentrator assemblies 100 , where N is an integer ⁇ 1.
  • the filtering and concentrating device 100 is connected by a plurality of filtering and concentrating devices 10 .
  • the filtering and concentrating device is 10 is a tubular filter concentrator 10'.
  • the tubular filter concentrator 10' has a tubular shell 11 and a filter element 12 whose shape and size are adapted to the pipes in the shell 11.
  • the filter element 12 is provided with an axial channel 12A.
  • the axial channel 12A The original liquid chamber 13 or the clear liquid chamber 14 is formed.
  • the clear liquid chamber 14 is formed between the pipe in the housing 11 and the filter element 12 .
  • the original liquid chamber 13 is formed between the pipe in the housing 11 and the filter element 12.
  • the feed structure 15 of the slurry to be concentrated and the discharge structure 16 of the concentrated slurry of the tubular filter concentrator 10' in the filter concentrator assembly 100 are connected end to end in order, so that the The raw liquid chamber 13 is connected in series to form a flow path.
  • the first feeding structure 15 of the slurry to be concentrated in the flow path is connected to the discharging structure A of the slurry to be concentrated, and the discharging structure 16 of the concentrated slurry at the end is connected to the discharging structure A of the slurry to be concentrated.
  • the concentrated slurry return structure B is connected.
  • the filter element 12 is a tubular filter element. Therefore, the axial channel 12A is the internal pipeline of the tubular filter element, and the internal pipeline constitutes the original liquid chamber 13 .
  • the clear liquid discharge structure is provided on the wall of the shell 11 of the tubular filter concentrator 10'.
  • the tubular filter element has a first edge and a second edge that are perpendicular to each other, wherein the first edge can be regarded as the generatrix of the cylindrical surface composed of the internal pipes of the tubular filter element (similar to the tubular filter concentrator 10 'The direction of the central axis of the housing 11 is consistent), and the second edge can be seen as a circle formed by the bottom edge or top edge of the cylindrical surface formed by the internal pipes of the tubular filter element.
  • the filtering area of the tubular filter element is equal to the product of the length of the first edge and the length of the second edge.
  • the original stirring structure is canceled by redesigning the structure of the filter concentrator, and the slurry can flow in the raw liquid cavity of the filter concentrator along the central axis direction of the shell of the filter concentrator.
  • the tubular filter concentrator 10' can significantly reduce the diameter of the filter concentrator, effectively reduce the residence time of the reaction slurry in the filter concentrator outside the reactor, greatly reduce the impact of a separate deployment of the filter concentrator on the reaction, and ensure the ternary precursor consistency of body granularity.
  • the tubular filter concentrators 10' in the filter concentrator assembly 100 are arranged in parallel and spaced apart, and the feed structure 15 of the slurry to be concentrated is between adjacent tubular filter concentrators 10'. It is connected to the concentrated slurry discharge structure 16 through an elbow 101 so that the raw liquid chambers 13 between adjacent tubular filter concentrators 10' are connected in series. In this way, the structure of the filter concentrator assembly 100 is made more compact, and the space occupied by the filter concentrator assembly 100 is reduced.
  • the elbow 101 in the filter concentrator assembly 100 is preferably arranged horizontally. This is mainly because the slurry contains solid particles. If the elbow 101 is arranged vertically, it is easy to cause the solid particles to completely block the elbow 101; when the elbow 101 is arranged horizontally, even if the solid particles are in the elbow Precipitation in 101 will also stratify in the horizontally arranged elbow 101 and flow out of a certain flow space in the upper part of the elbow 101.
  • the filter concentrator assembly 100 is also arranged horizontally. In this way, when the filtration and concentration unit includes more than two filtration and concentrator assemblies, the two or more filtration and concentrator assemblies will be arranged one above the other.
  • the clear liquid discharge structures 17 of different tubular filter concentrators 10' in the same filter concentrator assembly 100 can be merged together to form a set of clear liquid discharge structures; the set of clear liquid discharge structures 17 Corresponding to a group of filter elements 12, the cleaning system 200 performs backflush regeneration on the filter elements 12 of the same group at the same time according to the group of filter elements 12.
  • the clear liquid discharge structures 17 of different tubular filter concentrators 10' in different filter concentrator assemblies 100 are brought together to form a group of clear liquid discharge structures; the group of clear liquid discharge structures 17 corresponds to a group of clear liquid discharge structures.
  • the cleaning system 200 performs backflush regeneration on the filter elements 12 of the same group at the same time according to the group of the filter element 12.
  • the clear liquid discharge structures 17 of different tubular filter concentrators 10' in different filter concentrator assemblies 100 are brought together to form a set of clear liquid discharge structures. Moreover, if the different tubular filter concentrators 10' in the filter concentrator assembly 100 are numbered sequentially, then a set of clear liquid discharge structures are connected to the tubular filter concentrators 10' with the same serial number in the different filter concentrator assemblies 100. , which can facilitate subsequent control of the pressure difference between the original liquid chamber 13 and the clear liquid chamber 14 in each tubular filter concentrator 10'.
  • the cleaning system 200 includes a clear liquid transportation and filter element backwashing pipeline system 210.
  • the clear liquid transportation and filter element backwashing pipeline system 210 includes a clear liquid transportation system that corresponds to the group of the filter element 12.
  • the pipe 211 and the backflush medium delivery pipe 212 also correspond to the group of the filter element one-to-one.
  • the output end of the clear liquid delivery pipe 211 is connected to the clear liquid delivery main pipe 215 through a one-to-one control valve 213, so
  • the input end of the clear liquid delivery pipe 211 is connected to a clear liquid input interface for connecting to the clear liquid discharge structure of the corresponding filter element group, and the input end of the backflush medium delivery pipe 212 passes through a control valve set one to one 214 is connected to the backflush medium transport main pipe 216, and the output end of the backflush medium transport pipe 212 is connected to the bypass of the one-to-one corresponding clear liquid transport pipe.
  • the cleaning system 200 also includes a recoil device 217.
  • the shell of the recoil device 217 is respectively provided with a recoil medium input structure and a recoil medium output structure.
  • the recoil medium output structure is connected with the recoil medium output structure.
  • the red medium transport main pipe 216 is connected.
  • the above-mentioned cleaning system 200 can not only realize the transportation of clear liquid, but also realize the simultaneous backflush regeneration of filter elements 12 in the same group according to the group of filter elements 12 .
  • a flow adjustment device 102 can also be provided between each filter concentrator assembly 100 and the slurry discharge structure to be concentrated, and each clear liquid delivery pipe 211 is located on the clear liquid delivery pipe 211
  • a back pressure control device 218 is provided between the control valve 213 and the clear liquid delivery main pipe 215.
  • the flow regulating device 102 may use a flow regulating valve.
  • the back pressure control device 218 can also use a flow-adjustable valve, so that the back pressure on the clear liquid delivery pipe 211 can be adjusted by adjusting the opening of the valve.
  • the flow regulating device 102 can be controlled to allow the raw liquid chamber 13 in each filtering and concentrating assembly 100 to pass through.
  • the slurry flow rate of the flow paths formed in series is balanced, so that the slurry flow rate on the filter surface of each filter concentrator assembly 100 is similar, ensuring the anti-pollution performance of the filter surface of each filter concentrator assembly 100 .
  • the tubes with the same serial number in different filter concentrator assemblies 100 can be adjusted.
  • the pressure difference between the raw liquid chamber 13 and the clear liquid chamber 14 in the filter concentrator 10' is approximately the same.
  • the tubular filter concentrators with the same serial number in different filter concentrator assemblies 100 will The operating conditions of the concentrator 10' are similar.
  • the coprecipitation reaction system may also include a vapor-liquid separator 103.
  • the casing of the vapor-liquid separator 103 is respectively provided with a vapor-liquid mixed phase input structure, a separated liquid phase output structure, and a separated gas phase output structure.
  • the vapor-liquid mixed phase input structure is connected to the concentrated slurry discharge structure, and the separated liquid phase output structure is connected to the concentrated slurry reflux structure B.
  • the co-precipitation reaction system may also include a reflux pipe 104, one end of the reflux pipe 104 is connected to the feed structure A of the slurry to be concentrated, and the other end is connected to the discharge structure of the concentrated slurry; so
  • the return pipe 104 is provided with at least valves and valves in the heat exchange cooler 105 .
  • the slurry can be returned to the filtration and concentration unit through the return pipe 104 for further filtration and concentration.
  • the slurry temperature rises and can be cooled down by the heat exchange cooler 105.
  • a feed pump 106 is provided between the co-precipitation reaction unit and the filtration concentration unit.
  • Figure 4 is a cross-sectional schematic diagram of a filter concentrator in a co-precipitation reaction system according to an embodiment of the present application.
  • Figure 5 is a cross-sectional schematic diagram of a filter concentrator in a co-precipitation reaction system according to an embodiment of the present application.
  • Figure 6 is a cross-sectional schematic diagram of a filter concentrator in a co-precipitation reaction system according to an embodiment of the present application.
  • the filter element 12 in the previous embodiment is replaced from a tubular filter element to a multi-channel filter element.
  • a plurality of the axial channels 12A are provided in the multi-channel filter element.
  • the multi-channel filter element also has a first edge and a second edge that are perpendicular to each other, wherein the first edge can be regarded as the generatrix of a cylindrical surface composed of any internal pipe of the multi-channel filter element (similar to the tubular filter concentrator 10 'The direction of the central axis of the housing 11 is consistent), and the second edge can be seen as a circle formed by the bottom edge or the top edge of the cylindrical surface formed by any internal pipe in the multi-channel filter element.
  • the filtration area of the multi-channel filter element is equal to the product of the length of the first edge and the length of the second edge multiplied by the number of axial channels 12A.
  • the filtering area of the multi-channel filter element is larger, so the diameter of the housing 11 of the tubular filter concentrator 10' can be increased adaptively.
  • the filter element 12 adopts a ring-shaped filter element, that is, it has two layers of inner and outer filtering surfaces, and the original liquid chamber 13 is between the two inner and outer filtering surfaces.
  • a clean liquid chamber 14 is located in the inner filter surface and between the outer filter surface and the outer shell 11 .
  • the annular tubular filter element also has a first edge and a second edge that are perpendicular to each other, wherein the first edge can be regarded as the generatrix of the cylindrical surface composed of the outer filter surface or the inner filter surface (similar to the tubular filter element).
  • the direction of the central axis of the shell 11 of the concentrator 10' is consistent), and the second edge can be regarded as a circle formed by the bottom edge or the top edge of the cylindrical surface formed by the outer filter surface or the inner filter surface.
  • the filter area of the annular filter element is equal to the product of the length of the outer filter surface corresponding to the first edge and the length of the second edge plus the length of the inner filter surface corresponding to the first edge and the length of the second edge. The product of the lengths of the second edges.
  • the filter element 12 adopts a plate filter element.
  • the plate filter element divides the housing 11 into multiple cavities, some of which are raw liquid chambers 13 and some of which are clean liquid chambers 14 .
  • the plate filter element also has a first edge and a second edge that are perpendicular to each other, wherein the first edge can be regarded as the length of the plate filter element (the direction is consistent with the central axis of the shell 11 of the tubular filter concentrator 10') , the second edge can be regarded as the width of the plate filter element.
  • the product of the length of the first edge such as the filter area of the plate filter element and the length of the second edge is multiplied by the number of plate filter elements.
  • the filter concentrator of the third co-precipitation reaction system can be summarized as follows: in the filter concentrator, the filter element has a first edge and a second edge that are perpendicular to each other, and the area of the filter surface of the filter element is basically determined by the third edge.
  • the length of one edge is determined by the product of the length of the second edge, the direction of the length of the first edge is consistent with the direction of the central axis of the housing of the filter concentrator, and the feed structure of the slurry to be concentrated is consistent with the direction of the casing of the filter concentrator.
  • the concentrated slurry discharging structures are respectively disposed on the shell of the filter concentrator at both ends in the direction of the central axis and are respectively connected to both ends of the original liquid chamber. Moreover, if a plane perpendicular to the central axis and intersecting the filtering surface of the filter element is taken as a cross section, then: on the cross section, the original liquid chamber is distributed in the form of a first figure, and the first The figure is a closed figure, the shape of the closed figure is a circle, an annular or a polygon, and the cross-section is located in the shell of the filter concentrator and the area except the first figure is basically composed of the second figure and Composed of a third graphic, the clear liquid chamber is distributed in the form of the second graphic, the filter material of the filter element is distributed in the form of the third graphic, and the corresponding center point of the central axis on the cross section Close to or located in the first figure, second figure or third figure.
  • the clearing system was redesigned and an overall movable clearing module was proposed.
  • the purge system using this integral movable purge module can be used in any of the above co-precipitation reaction systems.
  • the composition of the clearing system may be different, but the overall structure is similar.
  • Figure 7 is a three-dimensional structural diagram of the clearing system in a co-precipitation reaction system according to an embodiment of the present application.
  • Figure 8 is a three-dimensional structural diagram of the system shown in Figure 7 from another angle.
  • Figure 9 is a three-dimensional structural diagram of the system shown in Figure 7 from another angle.
  • Figure 10 is a three-dimensional structural diagram of the system shown in Figure 7 from another angle.
  • Figure 11 is a three-dimensional structural diagram of the system shown in Figure 10 after the electrical box is hidden.
  • Figure 12 is a main schematic diagram of the system shown in Figure 7.
  • the clearing system shown in Figure 7-12 is actually designed for the above-mentioned second co-precipitation reaction system. When the clearing system is used in different co-precipitation reaction systems, the overall structure is still similar to that shown in Figure 7-12, but local adjustments can be made as needed.
  • the overall movable cleaning module specifically includes: frame support 220, clear liquid transportation and filter element backwashing pipeline system 210, functional container equipment group 230 and other parts.
  • the frame support 220 includes a support base 221 and a bridge 222 provided on the support base 221.
  • a pipeline facility installation area 223 is formed on one side of the support base 221 on the bridge 222.
  • a functional container facility installation area 224 is formed in the bridge 222 .
  • the clear liquid transportation and filter element backwashing pipeline system 210 is installed in the pipeline facility installation area 223.
  • the clear liquid transportation and filter element backwashing pipeline system 210 includes clear liquid transportation pipes 211 corresponding to the groups of filter elements.
  • the backflush medium conveying pipe 212 also corresponds to the group of the filter element one-to-one.
  • the output end of the clear liquid conveying pipe 211 is connected to the clear liquid conveying main pipe 215 through a one-to-one control valve 213.
  • the input end of the liquid delivery pipe 211 is connected to a clear liquid input interface for connecting to the clear liquid discharge structure of the corresponding filter element group.
  • the input end of the backflush medium delivery pipe 212 is connected to the clear liquid delivery pipe 212 through a control valve 214 arranged one-to-one.
  • the backflush medium transport main pipe 216 is connected, and the output end of the backflush medium transport pipe 212 is connected to the bypass of the clear liquid transport pipe 211 in one-to-one correspondence.
  • control valves 213 and 214 can be pneumatic valves. By controlling the status of the corresponding control valve 213 and control valve 214, the working status (filtration or backflush regeneration) of a specific group of filter elements can be controlled.
  • the functional container equipment group 230 is erected on the bridge 222 and located in the functional container facility installation area 224.
  • the functional container equipment group 230 includes a recoiler 231, and the outer shell of the recoiler 231 is respectively provided with A recoil medium input structure and a recoil medium output structure are connected to the recoil medium delivery main pipe 216 .
  • the recoil medium can be either recoil gas or recoil liquid.
  • the group of the filter element is ⁇ 2. Therefore, the clear liquid delivery pipe 211 and the backwash medium delivery pipe 212 in the clear liquid delivery and filter core backwashing pipeline system 210 can be arranged at horizontal and transverse intervals so that the clear liquid
  • the conveying and filter backwash pipeline system 210 is arranged in the pipeline facility installation area 223.
  • the central axis of the clear liquid delivery pipe 211 and the The central axes of the recoil medium delivery pipes 212 connected to the clear liquid delivery pipes 211 in one-to-one correspondence may be located in the same vertical plane. In this way, the overall horizontal width of the clear liquid delivery and filter element backwashing pipeline system 210 can be saved.
  • the clear liquid delivery main pipe 215 can have clear liquid delivery pipes 215 to facilitate installation.
  • the output end of the clear liquid delivery pipe 211 in the clear liquid delivery and filter element backwashing pipeline system 210 is connected to the horizontal and transverse extension section of the clear liquid delivery main pipe through a one-to-one set of control valves 213.
  • the backflush medium transport main pipe 216 may have a horizontal and transverse extension section of the backflush medium transport main pipe, and the output end of the backflush medium transport pipe 212 in the clear liquid transport and filter element backwash pipeline system 210 passes through a one-to-one
  • the provided control valve 214 is connected to the horizontal and transverse extension section of the recoil medium delivery main pipe.
  • the horizontal transverse extension section of the backflush medium transport main pipe can be located above the horizontal transverse extension section of the clear liquid transport main pipe (as shown in Figures 8-9), and the backflush medium transport pipe 212 Located above the one-to-one corresponding clear liquid delivery pipe 211.
  • the recoil medium transport pipe 212 can be used to exert an upward force on the clear liquid transport pipe 211 to facilitate the positioning of the clear liquid transport pipe 211.
  • the clear liquid delivery pipe installation and positioning device 217 uses a pipe clamp
  • the clear liquid delivery pipe installation and positioning device 217 uses a pipe clamp
  • this application also makes the following improvements to the overall movable cleaning module. These improvements can be applied to the whole (combined) or partially (individual).
  • the removable cleaning module can be used to implement specific functions or solve specific problems.
  • a pipe sight glass 218 is installed at the input end of the clear liquid delivery pipe 211, and the pipe sight glass 218 is connected to a clear liquid input interface for connecting to the clear liquid discharge structure of the corresponding filter element group.
  • the input end of the clear liquid transport pipe 211 has a vertical section
  • the pipe sight glass 218 adopts a vertical pipe sight glass and is installed on the vertical section
  • the clear liquid input interface is the vertical pipe sight glass.
  • the turbidity of the clear liquid in the clear liquid delivery pipe 211 can be observed through the pipe sight glass 218, thereby determining the filter element of the group corresponding to the clear liquid delivery pipe 211. Whether filtering occurs, if filtering occurs, the control valve 213 on the clear liquid delivery pipe 211 can be closed.
  • Installing the pipe sight glass 218 at the input end of the clear liquid delivery pipe 211 can not only determine whether filtering of each group of filter elements has occurred according to the group of filter elements, reducing the difficulty of troubleshooting, but also, because the pipe sight glass 218 is close to the backflush 231, In this way, the pipe sight glass 218 can be flushed through close-range recoil to ensure the visibility of the pipe sight glass 218 .
  • the pipe sight glass 218 adopts a vertical pipe sight glass and is installed on the vertical section, it is not only convenient for observation, but also can effectively avoid the pipe sight after filtering. Mirror 218 is clogged.
  • one side of the support base 221 located on the bridge 222 forms a pipeline facility installation area 223 and the other side forms a pump equipment installation area 225.
  • the pump equipment installation area 225 and the A pump equipment maintenance operation area 226 is also reserved between the bridges 222 .
  • the cleaning system also includes a pump set 240.
  • the pump set 240 is installed in the pump equipment installation area 225 and includes an active pump 241 and a backup pump (not shown in the figure) arranged at horizontal and transverse intervals.
  • the active pump 241 and the standby pump are symmetrically arranged with a plumb bob plane disposed in the same direction as the horizontal longitudinal direction as the plane of symmetry.
  • the active pump 241 and the standby pump are connected in parallel with each other and pass through respectively.
  • a valve is optionally connected to the clear liquid delivery manifold 215 to form part of the clear liquid delivery manifold.
  • the pump set 240 includes active pumps 241 and backup pumps arranged at intervals along the horizontal direction, that is, a redundant design is adopted to ensure the stability of the operation of the pump set 240.
  • a pump equipment maintenance operation area 226 is cleverly reserved between the pump equipment installation area 225 and the bridge 222 to facilitate on-site maintenance of the main pump 241 and/or the backup pump.
  • the symmetrical design is adopted between the active pump 241 and the backup pump, which can not only improve the uniformity of the weight distribution of the overall movable cleaning module, reduce the operating vibration of the movable cleaning module, but also ensure the balance between the active pump 241 and the backup pump. When switching between pumps The impact is smaller.
  • the improvement in the second aspect mentioned above has different meanings when applied to the first co-precipitation reaction system, the second co-precipitation reaction system and the third co-precipitation reaction system.
  • the active pump 241 and the backup pump can be used as clearing pumps to prevent the clear liquid from flowing back when the output port of the clear liquid delivery main pipe 215 needs to be raised (which will be described in detail later).
  • the frame support 221 is located on both sides of the pump equipment installation area 225 on the side opposite to the pump equipment maintenance operation area 226 to form an electrical box installation. area; the integral movable cleaning module also includes an electrical box 250, and the electrical box 250 is installed in the electrical box installation area.
  • the clear liquid transport main pipe 215 includes a lifting section 215A located downstream of the active pump and the backup pump; the lifting section 215A is respectively provided with an output port and a cleaning liquid input port of the clear liquid transport main pipe. and a cleaning fluid output port; the cleaning fluid output port is connected to the backflush medium delivery main pipe through a cleaning fluid delivery pipe 215B, and a control valve 215C is provided on the cleaning fluid delivery pipe; the bridge 222 faces the pump
  • An L-shaped cantilever 222A can be provided on one side of the equipment installation area 225.
  • the vertical section of the L-shaped cantilever 222A can respectively support the horizontal pipe section where the output port of the clear liquid delivery main pipe 215 is located and where the cleaning liquid input port is located.
  • the horizontal pipe sections are connected and supported.
  • the fluid delivery interface in the functional container equipment group 230 for external connection with the integrally movable purge module and the fluid delivery interface in the pump set 240 for external connection with the integrally movable purge module are provided.
  • the conveying interfaces are uniformly oriented in the same horizontal direction and are not blocked by the structure in the integral movable cleaning module.
  • the functional container equipment group 230 also includes a heat exchange cooler 232.
  • the heat exchange cooler 232 is provided with heat exchangers separated from each other by heat exchange walls. A clear liquid channel and a cooling medium channel.
  • the outer shell of the heat exchange cooler 232 is provided with a clear liquid inlet and a clear liquid outlet respectively connected to both ends of the clear liquid channel.
  • the outer shell of the heat exchange cooler 232 is There is also a cooling medium inlet and a cooling medium outlet respectively connected to both ends of the cooling medium channel.
  • the clear liquid inlet and the clear liquid outlet are connected in series on the clear liquid delivery main pipe 215 so that the clear liquid The channel forms part of the clear liquid delivery manifold 215 .
  • the heat exchange cooler 232 may use water as a cooling medium.
  • the heat exchange cooler 232 can cool down the clear liquid, destroying the growth conditions of the ternary precursor particles, thereby avoiding further generation of ternary precursor particles in the clear liquid, causing the clear liquid delivery main pipe 215, especially the active pump 241 and the backup pump to of blockage.
  • the heat exchange cooler 232 can cool down the clear liquid to protect the hoses in the hose pump and extend its service life.
  • the heat exchange cooler 232 adopts a vertical container, the clear liquid inlet is located at the upper end of the heat exchange cooler, and the clear liquid outlet is located at the lower end of the heat exchange cooler 232.
  • the pipe section on the main delivery pipe 215 located between the clear liquid outlet and the regular pump 241 and the backup pump connects the clear liquid outlet to the regular pump 241 and the backup pump through the bottom of the pump equipment maintenance operation area 226 .
  • the heat exchange cooler 232 After the heat exchange cooler 232 adopts a vertical container, it saves space and facilitates installation on the bridge 222.
  • the clear liquid inlet is arranged at the upper end of the heat exchange cooler 232
  • the clear liquid outlet is arranged at the lower end of the heat exchange cooler 232
  • the clear liquid delivery main pipe 215 is located at the clear liquid outlet.
  • the pipe section between the active pump 241 and the standby pump connects the clear liquid outlet to the active pump 241 and the standby pump through the bottom of the pump equipment maintenance operation area 226, leaving as much space as possible for the pump equipment maintenance operation area 226.
  • the pipe section between the active pump 241 and the standby pump connects the clear liquid outlet to the active pump 241 and the standby pump through the bottom of the pump equipment maintenance operation area 226, leaving as much space as possible for the pump equipment maintenance operation area 226.
  • the pipe section between the active pump 241 and the standby pump connects the clear liquid outlet to the active pump 241 and the standby pump through the bottom of the pump
  • the clear liquid channel is a vertical tubular structure
  • the clear liquid inlet is located at the top of the heat exchange cooler 232 and communicates with the upper port of the vertical tubular structure
  • the clear liquid outlet is located at the heat exchanger cooler 232.
  • the bottom of the heat cooler 232 is connected to the lower port of the vertical tubular structure; and the cooling medium channel is a vertical annular pipe located between the vertical tubular structure and the outer shell of the heat exchange cooler 232, The cooling medium inlet and the cooling medium outlet are respectively located at the upper and lower end sides of the vertical annular pipe.
  • a wastewater discharge branch 219 is connected to the pipe section of the clear liquid delivery main pipe 215 between the clear liquid outlet and the active pump 241 and the backup pump close to the clear liquid outlet.
  • the wastewater discharge branch 219 is at the lowest position of all liquid flow paths in the integrally movable cleaning module, and the wastewater discharge branch 219 is provided with a discharge valve.
  • the recoil medium input structure of the recoil device 231 includes a recoil fluid input structure 231A and a compressed gas input structure 231B, and the recoil fluid input structure is also provided on the outer shell of the recoil device 231.
  • Overflow port 231C, the backwash liquid overflow port 231C is connected to the output port of the clear liquid delivery main pipe 215 through the backwash liquid overflow pipe 231D, then the overall output port of the clear liquid delivery main pipe 215 is higher than the
  • the recoil overflow port 231C is provided, and the recoil overflow pipe 231D is provided with an ascending section 231E.
  • a control valve may be provided on the recoil overflow pipe 231D.
  • the clear liquid delivery main pipe 215 includes an elevated section 215A located downstream of the clear liquid delivery main pipe, and the output port of the clear liquid delivery main pipe 215 is disposed on the elevated section 215A.
  • the recoiler 231 used gas recoil or liquid recoil. Therefore, the recoil medium input structure was either the recoil liquid input structure 231A or the compressed gas input structure 231B.
  • the recoil medium input structure of the recoiler 231 includes both the recoil liquid input structure 231A and the compressed gas input structure 231B. In this way, one can choose between gas recoil and liquid recoil, or the gas recoil can be reversed. Flush and liquid backflush are combined.
  • this application can also adopt this innovative backflush method, that is, inject the backflush liquid and compressed gas into the backflush 231 through the backflush liquid input structure 231A and the compressed gas input structure 231B respectively.
  • the backflush The lower part of the inside of the container 231 is the recoil fluid and the upper part is the The compressed gas can be used to quickly push the recoil liquid back to the filter element in the reverse direction.
  • Conventional liquid recoil uses a diaphragm pump to provide recoil force. The effect of liquid recoil in this way is limited. However, after adopting the above-mentioned innovative recoil method, the recoil force is even greater.
  • the volume of the backwash liquid in the backflush 231 can be roughly equal to the sum of the volumes of the raw liquid chambers of the filter elements corresponding to each backflush (for example, the backwash liquid can be
  • the volume of the flushing fluid is controlled to be 1-1.2 times the sum of the volumes), which not only achieves a better recoil effect, but also reduces the amount of recoil fluid that has little effect, thus saving energy.
  • a recoil fluid overflow port 231C is provided on the outer shell of the recoil device 231, thereby controlling the volume of the recoil fluid in the recoil device 231.
  • the liquid level height thereby controls the volume of backflush fluid in the backflush 231.
  • the backflush overflow port 231C is connected to the output port of the clear liquid delivery main pipe 215 through the backflush overflow pipe 231D.
  • the recoil overflow port 231C When the recoil overflow port 231C is provided on the shell of the recoil device 231 and the recoil overflow port 231C is connected to the output port of the clear liquid delivery main pipe 215 through the recoil overflow pipe 231D, In order to prevent the compressed gas from leaking from the recoil overflow port 231C and the recoil overflow pipe 231D, the output port of the clear liquid delivery main pipe 215 is required to be higher than the recoil overflow port 231C.
  • the recoil overflow pipe 231D is provided with an ascending section 231E, so that a liquid seal can be formed in the recoil overflow pipe 231D to avoid leakage of compressed gas.
  • the functional container equipment group also includes a vapor-liquid separator 233.
  • the casing of the vapor-liquid separator 233 is respectively provided with a vapor-liquid mixed phase input structure 233A and a separated liquid phase output structure 233B. and separated gas phase output structure 233C.
  • the vapor-liquid separator 233 and the vapor-liquid separator 103 may be the same device.
  • the vapor-liquid mixed phase of the vapor-liquid separator 233 The input structure 233A, the separated liquid phase output structure 233B and the separated gas phase output structure 233C can be connected to corresponding pipelines in the manner shown in Figure 1 .
  • the vapor-liquid mixed phase input structure 233A of the vapor-liquid separator 233 can be combined with the compressed gas input structure of the backflush 231 231B are connected through a connecting pipe, and the connecting pipe is connected to the compressed air source through the air supply bypass 231D.
  • the connecting pipe is connected in series between the vapor-liquid mixed phase input structure 233A and the air supply bypass 231D. Valve 233D, the gas supply bypass 231D forms part of the compressed gas input structure 231B.
  • control valve 233D can be opened, and the vapor-liquid two-phase material in the backflush 231 enters the vapor-liquid separator 103 for vapor-liquid separation.
  • the vapor-liquid mixed phase input structure 233A includes a vapor-liquid mixed phase input pipe that is tangent to the side wall of the vapor-liquid separator 233, and the connecting pipe is coaxially arranged with the vapor-liquid mixed phase input pipe.
  • the separated liquid phase output structure 233B is connected to the wastewater discharge branch 219 .

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Abstract

A co-precipitation reaction system for solving the technical problem that reactions are affected due to the large size of the filtering concentrator. With the co-precipitation reaction system, in the filtering concentrator, if a plane perpendicular to the central axis and intersecting a filtering face of a filter cartridge is used as a cross section, then on the cross section, a stock solution cavity is distributed in the form of a first graph, the first graph being a closed graph, the shape of the closed graph being circular, annular, or polygonal; areas other than the first graph on the cross section and within the shell of the filtering concentrator basically consist of a second graph and a third graph; the clear liquid cavity is distributed in the form of the second graph; the filtering material of the filter cartridge is distributed in the form of the third graph, and the corresponding center point of the central axis on the cross section is near or located in the first graph, the second graph, or the third graph.

Description

一种共沉淀反应系统A co-precipitation reaction system 技术领域Technical field
本申请实施例涉及共沉淀反应系统。所述共沉淀反应系统适用于锂离子二次电池正极材料前驱体的制备，尤其适用于三元前驱体的制备。The embodiments of this application relate to a co-precipitation reaction system. The co-precipitation reaction system is suitable for the preparation of positive electrode material precursors for lithium ion secondary batteries, and is especially suitable for the preparation of ternary precursors.
背景技术Background technique
化学共沉淀法在液相化学合成粉体材料中应用较为广泛，一般是原料溶液中添加适当的沉淀剂，使溶液中已经混合均匀的各组分按化学计量比共同沉淀出来，或在溶液中先反应沉淀出一种中间产物，再把它煅烧分解制备出目标产品。采用该工艺可根据实验条件对产物的粒度、形貌进行调控，产物中的有效组分可达到原子、分子级别的均匀混合。The chemical co-precipitation method is widely used in liquid-phase chemical synthesis of powder materials. Generally, an appropriate precipitant is added to the raw material solution to co-precipitate the components that have been mixed evenly in the solution in a stoichiometric ratio, or in the solution First, an intermediate product is reacted and precipitated, and then it is calcined and decomposed to prepare the target product. Using this process, the particle size and morphology of the product can be controlled according to experimental conditions, and the effective components in the product can be uniformly mixed at the atomic and molecular levels.
目前，锂离子二次电池正极材料三元前驱体的制备是化学共沉淀法在新能源产业的重要应用。制备过程中，将硫酸镍(或氯化镍)、硫酸钴(或氯化钴)、硫酸锰(或氯化锰)配置成一定摩尔浓度的混合盐溶液，将氢氧化钠配置成一定摩尔浓度的碱溶液，用一定浓度的氨水作为络合剂，再将混合盐溶液、碱溶液和络合剂以一定的流量加入反应釜，控制反应釜的搅拌速率，反应浆料的温度和pH值，以及反应气氛(目前一般要求反应过程在氮气保护下完成)等，使盐、碱发生中和反应生成三元前驱体晶核并逐渐长大，当粒度达到预定值后，将反应产物过滤、洗涤、干燥，得到三元前驱体。可见，反应过程中需要控制的工艺参数较多，主要包括：盐和间的浓度、氨水浓度、盐溶液和碱溶液加入反应釜的速率、反应温度、反应过程的pH值、搅拌速率、反应时间、反应浆料固含量、反应气氛等等。三元前驱体制备完成后，再将三元前驱体与锂源按一定比例混合均匀，然后再进行煅烧，再将冷却后的物料进行破碎、粉碎、分级和干燥，得到锂离子二次电池正极材料。Currently, the preparation of ternary precursors for lithium-ion secondary battery cathode materials is an important application of chemical co-precipitation in the new energy industry. During the preparation process, nickel sulfate (or nickel chloride), cobalt sulfate (or cobalt chloride), and manganese sulfate (or manganese chloride) are configured into a mixed salt solution with a certain molar concentration, and sodium hydroxide is configured into a certain molar concentration. Alkaline solution, use ammonia water of a certain concentration as the complexing agent, then add the mixed salt solution, alkali solution and complexing agent into the reaction kettle at a certain flow rate, control the stirring rate of the reaction kettle, the temperature and pH value of the reaction slurry, and reaction atmosphere (at present, the reaction process is generally required to be completed under nitrogen protection), etc., so that the salt and alkali neutralize to generate ternary precursor crystal nuclei and gradually grow up. When the particle size reaches a predetermined value, the reaction product is filtered and washed , dry to obtain the ternary precursor. It can be seen that there are many process parameters that need to be controlled during the reaction process, mainly including: concentration of salt and salt, ammonia concentration, the rate at which salt solution and alkali solution are added to the reactor, reaction temperature, pH value of the reaction process, stirring rate, and reaction time. , reaction slurry solid content, reaction atmosphere, etc. After the preparation of the ternary precursor is completed, the ternary precursor and the lithium source are mixed evenly in a certain proportion, and then calcined. The cooled material is then crushed, pulverized, classified and dried to obtain the positive electrode of the lithium ion secondary battery. Material.
为便于生产，目前还在反应釜旁部署了过滤浓缩器，实施“釜外浓缩”。在反应釜运行过程中，随着反应原料(盐溶液、碱溶液、氨水)加入反应釜，反应釜中的部分反应浆料进入过滤浓缩器，过滤浓缩器中安装有滤芯并设有搅拌结构，通过滤芯对反应浆料进行过滤后可从过滤浓缩器输出清液，清液作为母液可重新用于反应，而过滤浓缩器中的浓缩液则通过已浓缩浆料回流结构返回反应釜。过滤浓缩器中的搅拌结构一般包括位于过滤浓缩器中的主轴和安装在主轴上的搅拌桨，主轴由过滤浓缩器外部的电机带动，滤芯间隔布置在搅拌桨外围，当搅拌桨旋转时可以对浆料进行搅拌，防止浆料中的颗粒物沉降并延长滤芯上滤饼形成时间。但上述过滤浓缩器的内部结构设计导致过滤浓缩器体积较大，使得反应浆料在反应釜体外的过滤浓缩器中停留时间较长，而反应过程又受到多种工艺参数影响，一旦环境发生变化就会影响反应，因此，当浆料在过滤浓缩器中停留时间较长时，就会影响反应和三元前驱体粒度的一致性。In order to facilitate production, a filter concentrator is currently deployed next to the reactor to implement "concentration outside the reactor". During the operation of the reaction kettle, as the reaction raw materials (salt solution, alkali solution, ammonia water) are added to the reaction kettle, part of the reaction slurry in the reaction kettle enters the filter concentrator. The filter concentrator is equipped with a filter element and a stirring structure. After filtering the reaction slurry through the filter element, the clear liquid can be output from the filter concentrator. The clear liquid can be reused as mother liquor for the reaction, while the concentrated liquid in the filter concentrator is returned to the reaction kettle through the concentrated slurry reflux structure. The stirring structure in the filter concentrator generally includes a main shaft located in the filter concentrator and a stirring paddle installed on the main shaft. The main shaft is driven by a motor outside the filter concentrator. The filter elements are spaced around the periphery of the stirring paddle. When the stirring paddle rotates, it can The slurry is stirred to prevent the particles in the slurry from settling and prolong the formation time of the filter cake on the filter element. However, the internal structural design of the above-mentioned filter concentrator results in a larger volume of the filter concentrator, causing the reaction slurry to stay in the filter concentrator outside the reactor for a longer time. The reaction process is affected by a variety of process parameters. Once the environment changes, It will affect the reaction. Therefore, when the slurry stays in the filter concentrator for a long time, it will affect the reaction and the consistency of the particle size of the ternary precursor.
针对单独部署过滤浓缩器后带来的问题，一种解决方案是将过滤浓缩器取消，而将滤芯直接安装在反应釜中，这时，反应釜可称为共沉淀反应与过滤浓缩一体化设备。由于反应与过滤浓缩均在共沉淀反应与过滤浓缩一体化设备中进行，这样，反应浆料始终处于同一环境中，杜绝了单独部署过滤浓缩器对反应的影响。但是，需要指出：共沉淀反应与过滤浓缩一体化设备对滤芯的防材料破损稳定性要求更高。因为如果一旦滤芯发生材料破损，从滤芯上脱落的材料就会混入反应浆料，导致反应浆料污染。In order to solve the problems caused by deploying the filter concentrator separately, one solution is to cancel the filter concentrator and install the filter element directly in the reaction kettle. At this time, the reaction kettle can be called an integrated equipment for co-precipitation reaction and filtration and concentration. . Since the reaction and filtration concentration are all carried out in the integrated equipment of co-precipitation reaction and filtration concentration, the reaction slurry is always in the same environment, eliminating the impact of a separate deployment of a filter concentrator on the reaction. However, it should be pointed out that the integrated equipment of co-precipitation reaction and filtration and concentration has higher requirements on the stability of the filter element against material damage. Because once the material of the filter element is damaged, the material falling off the filter element will be mixed into the reaction slurry, causing contamination of the reaction slurry.
另一方面，无论是采用单独部署过滤浓缩器的共沉淀反应系统还是采用共沉淀反应与过滤浓缩一体化设备的共沉淀反应系统，滤芯过滤出的清液均需通过出清系统输出。目前，出清系统主要包括管道、阀门、反冲器等多个零部件，这些零部件是随着过滤浓缩器或共沉淀反应与过滤浓缩一体化设备的现场安装再进行进行现场临时安装的，施工强度大、时间长，影响项目施工进度。On the other hand, whether it is a co-precipitation reaction system with a separate filtration concentrator or a co-precipitation reaction system with integrated co-precipitation reaction and filtration concentration equipment, the clear liquid filtered out by the filter element must be output through the clearing system. At present, the purge system mainly includes pipelines, valves, backwashers and other components. These components are temporarily installed on site following the on-site installation of the filter concentrator or the integrated equipment for co-precipitation reaction and filtration and concentration. The construction intensity is high and the time is long, which affects the project construction progress.
发明内容Contents of the invention
本申请的实施例提供了一种共沉淀反应系统以及一种用于共沉淀反应系统的过滤浓缩装置，以解决过滤浓缩器体积较大而影响反应的技术问题。The embodiments of the present application provide a co-precipitation reaction system and a filtration and concentration device for the co-precipitation reaction system to solve the technical problem that the large volume of the filtration concentrator affects the reaction.
根据本申请的一个方面，提供了一种共沉淀反应系统，包括：共沉淀反应单元，所述共沉淀反应单元包含反应釜，所述反应釜具有外壳和内腔，所述反应釜的外壳上分别设有原料进料结构、待浓缩浆料出料结构和已浓缩浆料回流结构，所述原料进料结构、待浓缩浆料出料结构和已浓缩浆料回流结构分别与所述反应釜的内腔连通，所述反应釜的内腔中设有搅拌结构；过滤浓缩单元，所述过滤浓缩单元包含过滤浓缩器，所述过滤浓缩器具有外壳和滤芯，所述滤芯在所述过滤浓缩器的外壳中形成原液腔和清液腔，所述过滤浓缩器的外壳上分别设有待浓缩浆料进料结构、已浓缩浆料出料结构和清液出料结构，所述待浓缩浆料进料结构和所述已浓缩浆料出料结构分别与所述原液腔连通，所述清液出料结构与所述清液腔连通；其中，所述待浓缩浆料出料结构用于与所述待浓缩浆料进料结构连接，所述已浓缩浆料出料结构用于与所述已浓缩浆料回流结构连接，所述原料进料结构用于与共沉淀反应原料供给设备连接，所述清液出料结构用于与出清系统连接；在所述过滤浓缩器中，所述滤芯具有相互垂直的第一边缘与第二边缘，所述滤芯的过滤面的面积基本由所述第一边缘的长度与所述第二边缘的长度的乘积确定，所述第一边缘的长度的方向与所述过滤浓缩器的外壳的中心轴线的方向一致，所述待浓缩浆料进料结构与所述已浓缩浆料出料结构分别设置在所述过滤浓缩器的外壳上位于所述中心轴线方向上的两端的部位并分别与原液腔两端导通；若以与所述中心轴线垂直并与所述滤芯的过滤面相交的平面为横截面，则：在所述横截面上，所述原液腔以第一图形的形式分布，所述第一图形为封闭图形，所述封闭图形的形状为圆形、环形或多边形，所述横截面上位于所述过滤浓缩器的外壳内且除所述第一图形外的区域基本上由第 二图形和第三图形组成，所述清液腔以所述第二图形的形式分布，所述滤芯的过滤材料以所述第三图形的形式分布，并且，所述中心轴线在所述横截面上的对应中心点靠近或位于所述第一图形、第二图形或第三图形中。According to one aspect of the present application, a co-precipitation reaction system is provided, including: a co-precipitation reaction unit, the co-precipitation reaction unit includes a reaction kettle, the reaction kettle has an outer shell and an inner cavity, and the outer shell of the reaction kettle is A raw material feeding structure, a slurry to be concentrated discharge structure and a concentrated slurry reflux structure are respectively provided. The raw material feeding structure, the slurry to be concentrated discharge structure and the concentrated slurry reflux structure are respectively connected with the reaction kettle. The inner cavity of the reaction kettle is connected, and a stirring structure is provided in the inner cavity of the reaction kettle; a filtration and concentration unit, the filtration and concentration unit includes a filtration and concentrator, the filtration and concentrator has a shell and a filter core, and the filter core is in the filtration and concentration unit. A raw liquid cavity and a clear liquid cavity are formed in the shell of the filter concentrator. The shell of the filter concentrator is respectively provided with a feed structure for the slurry to be concentrated, a discharge structure for the concentrated slurry, and a discharge structure for the clear liquid. The slurry to be concentrated is The feeding structure and the concentrated slurry discharging structure are respectively connected with the original liquid cavity, and the clear liquid discharging structure is connected with the clear liquid cavity; wherein, the slurry to be concentrated discharging structure is used to communicate with the original liquid cavity. The feed structure of the slurry to be concentrated is connected, the discharge structure of the concentrated slurry is used to connect with the reflux structure of the concentrated slurry, and the raw material feed structure is used to connect with the co-precipitation reaction raw material supply equipment, so The clear liquid discharge structure is used to connect with the clearing system; in the filter concentrator, the filter element has a first edge and a second edge that are perpendicular to each other, and the area of the filter surface of the filter element is basically determined by the third edge. The length of one edge is determined by the product of the length of the second edge, the direction of the length of the first edge is consistent with the direction of the central axis of the housing of the filter concentrator, and the feed structure of the slurry to be concentrated is consistent with the direction of the casing of the filter concentrator. The concentrated slurry discharging structures are respectively arranged on the shell of the filter concentrator at both ends in the direction of the central axis and are respectively connected to both ends of the original liquid chamber; if they are perpendicular to the central axis and parallel The plane intersecting the filter surface of the filter element is a cross section, then: on the cross section, the original liquid chamber is distributed in the form of a first figure, the first figure is a closed figure, and the shape of the closed figure It is circular, annular or polygonal, and the cross-section is located in the housing of the filter concentrator and the area except the first figure is basically composed of the It consists of two figures and a third figure, the clear liquid chamber is distributed in the form of the second figure, the filter material of the filter element is distributed in the form of the third figure, and the central axis is in the cross section The corresponding center point on is close to or located in the first figure, the second figure or the third figure.
本申请的实施例中，所述过滤浓缩单元包含N个过滤浓缩器组件，所述N为≥1的整数，所述过滤浓缩器组件由多个过滤浓缩器连接而成，所述过滤浓缩器为管式过滤浓缩器；所述管式过滤浓缩器具有管状的外壳以及形状大小与所述外壳中的管道相适配的滤芯，所述滤芯中设有轴向通道，所述轴向通道构成所述原液腔或所述清液腔；当所述轴向通道构成所述原液腔时，所述外壳中的管道与所述滤芯之间形成所述清液腔，当所述轴向通道构成所述清液腔时，所述外壳中的管道与所述滤芯之间形成所述原液腔；所述过滤浓缩器组件中的管式过滤浓缩器的待浓缩浆料进料结构和已浓缩浆料出料结构依次首尾连接从而使这些管式过滤浓缩器的原液腔串联为一个流动通路，所述流动通路中为首的待浓缩浆料进料结构与所述待浓缩浆料出料结构连接，末尾的已浓缩浆料出料结构与所述已浓缩浆料回流结构连接。In the embodiment of the present application, the filtering and concentrating unit includes N filtering and concentrating components, and the N is an integer ≥ 1. The filtering and concentrating components are connected by multiple filtering and concentrating devices. The filtering and concentrating components It is a tubular filter concentrator; the tubular filter concentrator has a tubular shell and a filter element whose shape and size are adapted to the pipes in the shell. The filter element is provided with an axial channel, and the axial channel constitutes The original liquid cavity or the clear liquid cavity; when the axial channel constitutes the original liquid cavity, the clear liquid cavity is formed between the pipe in the housing and the filter element. When the axial channel constitutes When the clear liquid chamber is used, the original liquid chamber is formed between the pipe in the housing and the filter element; the feed structure of the slurry to be concentrated and the concentrated slurry of the tubular filter concentrator in the filter concentrator assembly The material discharging structures are connected end to end in order so that the raw liquid cavities of these tubular filter concentrators are connected in series into a flow path. The first feed structure of the slurry to be concentrated in the flow path is connected to the discharging structure of the slurry to be concentrated. The final concentrated slurry discharge structure is connected to the concentrated slurry return structure.
本申请的实施例中，所述管式过滤浓缩器的外壳的壁上设有所述清液出料结构。In the embodiment of the present application, the clear liquid discharge structure is provided on the wall of the shell of the tubular filter concentrator.
本申请的实施例中，所述过滤浓缩器组件中的管式过滤浓缩器平行间隔排列设置，相邻管式过滤浓缩器之间的待浓缩浆料进料结构与已浓缩浆料出料结构通过弯头连接从而使相邻管式过滤浓缩器之间的原液腔串联。In the embodiment of the present application, the tubular filter concentrators in the filter concentrator assembly are arranged in parallel and spaced apart, and the feed structure of the slurry to be concentrated and the discharge structure of the concentrated slurry between adjacent tubular filter concentrators are The raw liquid chambers between adjacent tubular filter concentrators are connected in series through elbow connections.
本申请的实施例中，所述过滤浓缩器组件中的弯头呈水平设置。In the embodiment of the present application, the elbow in the filter concentrator assembly is arranged horizontally.
本申请的实施例中，所述过滤浓缩单元包含2个以上过滤浓缩器组件，所述2个以上过滤浓缩器组件上下排列。In the embodiment of the present application, the filtration and concentration unit includes more than two filtration and concentrator assemblies, and the two or more filtration and concentrator assemblies are arranged one above the other.
本申请的实施例中，同一过滤浓缩器组件中不同管式过滤浓缩器的清液出料结构汇流在一起并形成一组清液出料结构，或者，不同过滤浓缩器组件中不同管式过滤浓缩器的清液出料结构汇流在一起并形成一组清液出料结构；所述一组清液出料结构对应一组滤芯，所述出清系统按照滤芯的组别对同一组别的滤芯同时进行反冲再生。In the embodiments of the present application, the clear liquid discharge structures of different tubular filter concentrators in the same filter concentrator assembly are merged together to form a set of clear liquid discharge structures, or different tubular filter concentrators in different filter concentrator assemblies are merged together to form a set of clear liquid discharge structures. The clear liquid discharge structures of the concentrator are brought together to form a group of clear liquid discharge structures; the group of clear liquid discharge structures corresponds to a group of filter elements, and the clear liquid discharge system processes the same group of filter elements according to the group of filter elements. The filter element is backflushed and regenerated at the same time.
本申请的实施例中，所述出清系统包含清液输送及滤芯反冲洗管道系统，所述清液输送及滤芯反冲洗管道系统包含与所述滤芯的组别一一对应的清液输送管以及同样与所述滤芯的组别一一对应的反冲介质输送管，所述清液输送管的输出端通过一对一设置的控制阀与清液输送总管连接，所述清液输送管的输入端连接有用于与对应滤芯的组别的清液出料结构连接的清液输入接口，所述反冲介质输送管的输入端通过一对一设置的控制阀与反冲介质输送总管连接，所述反冲介质输送管的输出端与一一对应的清液输送管的旁路连接；所述出清系统还包含反冲器，所述反冲器的外壳上分别设有反冲介质输入结构和反冲介质输出结构，所述反冲介质输出结构与所述反冲介质输送总管连接。In the embodiment of the present application, the cleaning system includes a clear liquid transportation and filter element backwashing pipeline system, and the clear liquid transportation and filter element backwashing pipeline system includes a clear liquid transportation pipe corresponding to the group of the filter element. And the backflush medium conveying pipe also corresponds to the group of the filter element one-to-one. The output end of the clear liquid conveying pipe is connected to the clear liquid conveying main pipe through a control valve set one to one. The clear liquid conveying pipe has The input end is connected to a clear liquid input interface for connecting to the clear liquid discharge structure of the corresponding filter element group. The input end of the backflush medium delivery pipe is connected to the backflush medium delivery main pipe through a one-to-one control valve. The output end of the recoil medium transport pipe is connected to the bypass of the one-to-one corresponding clear liquid transport pipe; the cleaning system also includes a recoil device, and the shell of the recoil device is respectively provided with a recoil medium input structure and a recoil medium output structure, the recoil medium output structure is connected with the recoil medium transport main pipe.
本申请的实施例中，当不同过滤浓缩器组件中不同管式过滤浓缩器的清液出料结构汇流在一起并形成一组清液出料结构时，每一个过滤浓缩器组件与所述待浓缩浆料出料结构之间均设有流量调节装置，并且，每一个清液输送管上位于该清液输送管上的控制阀与清液输送总管之间均设有背压控制装置。In the embodiment of the present application, when the clear liquid discharge structures of different tubular filter concentrators in different filter concentrator assemblies are brought together and form a set of clear liquid discharge structures, each filter concentrator assembly is connected to the to-be-described There is a flow regulating device between the concentrated slurry discharge structures, and a back pressure control device is installed between the control valve on each clear liquid delivery pipe and the clear liquid delivery main pipe.
本申请的实施例中，所述反冲器的反冲介质输入结构包含反冲液输入结构和压缩气体输入结构，且所述反冲器的外壳上还设有反冲液溢流口，所述反冲液溢流口通过反冲液溢流管连接至所述清液输送总管的输出口，则所述清液输送总管的输出口整体高于所述反冲液溢流口，且所述反冲液溢流管上设有上升段。In the embodiment of the present application, the recoil medium input structure of the recoil device includes a recoil fluid input structure and a compressed gas input structure, and the recoil fluid overflow port is also provided on the outer shell of the recoil device, so The recoil overflow port is connected to the output port of the clear liquid delivery main pipe through a recoil overflow pipe, then the output port of the clear liquid delivery main pipe is overall higher than the recoil overflow port, and the The recoil overflow pipe is provided with an ascending section.
本申请的实施例中，包括汽液分离器，所述汽液分离器的外壳上分别设有汽液混合相输入结构、被分离液相输出结构和被分离气相输出结构，所述汽液混合相输入结构与所述已浓缩浆料出料结构连接，所述被分离液相输出结构与所述已浓缩浆料回流结构连接。In the embodiment of the present application, a vapor-liquid separator is included. The casing of the vapor-liquid separator is respectively provided with a vapor-liquid mixed phase input structure, a separated liquid phase output structure, and a separated gas phase output structure. The vapor-liquid mixing The phase input structure is connected to the concentrated slurry discharge structure, and the separated liquid phase output structure is connected to the concentrated slurry return structure.
本申请的实施例中，包括回流管，所述回流管的一端与所述待浓缩浆料进料结构连接，另一端与所述已浓缩浆料出料结构连接；所述回流管上至少设有阀门和换热冷却器中的阀门。In the embodiment of the present application, a return pipe is included, one end of the return pipe is connected to the feed structure of the slurry to be concentrated, and the other end is connected to the discharge structure of the concentrated slurry; the return pipe is provided with at least There are valves and valves in the heat exchange cooler.
本申请的实施例中，所述共沉淀反应单元与所述过滤浓缩单元之间设有进料泵。In the embodiment of the present application, a feed pump is provided between the co-precipitation reaction unit and the filtration concentration unit.
根据本申请的另一个方面，提供了一种用于共沉淀反应系统的过滤浓缩装置，所述共沉淀反应单元包含反应釜，所述反应釜具有外壳和内腔，所述反应釜的外壳上分别设有原料进料结构、待浓缩浆料出料结构和已浓缩浆料回流结构，所述原料进料结构、待浓缩浆料出料结构和已浓缩浆料回流结构分别与所述反应釜的内腔连通，所述反应釜的内腔中设有搅拌结构；其包括：过滤浓缩单元，所述过滤浓缩单元包含过滤浓缩器，所述过滤浓缩器具有外壳和滤芯，所述滤芯在所述过滤浓缩器的外壳中形成原液腔和清液腔，所述过滤浓缩器的外壳上分别设有待浓缩浆料进料结构、已浓缩浆料出料结构和清液出料结构，所述待浓缩浆料进料结构和所述已浓缩浆料出料结构分别与所述原液腔连通，所述清液出料结构与所述清液腔连通；其中，所述待浓缩浆料进料结构用于与所述待浓缩浆料出料结构连接，所述已浓缩浆料出料结构用于与所述已浓缩浆料回流结构连接，所述清液出料结构用于与出清系统连接；在所述过滤浓缩器中，所述滤芯具有相互垂直的第一边缘与第二边缘，所述滤芯的过滤面的面积基本由所述第一边缘的长度与所述第二边缘的长度的乘积确定，所述第一边缘的长度的方向与所述过滤浓缩器的外壳的中心轴线的方向一致，所述待浓缩浆料进料结构与所述已浓缩浆料出料结构分别设置在所述过滤浓缩器的外壳上位于所述中心轴线方向上的两端的部位并分别与原液腔两端导通；若以与所述中心轴线垂直并与所述滤芯的过滤面相交的平面为横截面，则：在所述横截面上，所述原液腔以第一图形的形式分布，所述第一图形为封闭图形，所述封闭图形的形状为圆形、环形或多边形，所述横截面上位于所述过滤浓缩器的外壳内且除所述第一图形外的区域基本上由第二图形和第三图形组成，所述清液腔以所述第二图形的形式分布，所述滤芯的过滤材料以所述第三图形的形式分布，并且，所述中心轴线在所述横截面上的对应中心点靠近或位于所述第一图形、第二图形或第三图形中。 According to another aspect of the present application, a filtration and concentration device for a co-precipitation reaction system is provided. The co-precipitation reaction unit includes a reaction kettle, the reaction kettle has a shell and an inner cavity, and the shell of the reaction kettle is A raw material feeding structure, a slurry to be concentrated discharge structure and a concentrated slurry reflux structure are respectively provided. The raw material feeding structure, the slurry to be concentrated discharge structure and the concentrated slurry reflux structure are respectively connected with the reaction kettle. The inner cavity of the reaction kettle is connected, and a stirring structure is provided in the inner cavity of the reaction kettle; it includes: a filtration concentration unit, the filtration concentration unit includes a filter concentrator, the filter concentrator has a shell and a filter core, and the filter core is in the A raw liquid cavity and a clear liquid cavity are formed in the shell of the filter concentrator. The shell of the filter concentrator is respectively provided with a feed structure for the slurry to be concentrated, a discharge structure for the concentrated slurry, and a discharge structure for the clear liquid. The concentrated slurry feed structure and the concentrated slurry discharge structure are respectively connected with the original liquid chamber, and the clear liquid discharge structure is connected with the clear liquid chamber; wherein, the feed structure of the slurry to be concentrated is It is used to connect to the discharge structure of the slurry to be concentrated, the discharge structure of the concentrated slurry is used to connect to the reflux structure of the concentrated slurry, and the clear liquid discharge structure is used to connect to the clearing system. ; In the filter concentrator, the filter element has a first edge and a second edge that are perpendicular to each other, and the area of the filter surface of the filter element is basically determined by the length of the first edge and the length of the second edge. The product determines that the direction of the length of the first edge is consistent with the direction of the central axis of the housing of the filter concentrator, and the feed structure of the slurry to be concentrated and the discharge structure of the concentrated slurry are respectively arranged at the The parts of the shell of the filter concentrator located at both ends in the direction of the central axis are connected to both ends of the original liquid chamber respectively; if a plane perpendicular to the central axis and intersecting with the filtering surface of the filter element is taken as the cross section , then: on the cross section, the original liquid chamber is distributed in the form of a first figure, the first figure is a closed figure, the shape of the closed figure is a circle, annular or a polygon, and on the cross section The area located in the housing of the filter concentrator and except for the first pattern is basically composed of a second pattern and a third pattern. The clear liquid chamber is distributed in the form of the second pattern. The filter element The filter material is distributed in the form of the third figure, and the corresponding center point of the central axis on the cross section is close to or located in the first figure, the second figure or the third figure.
本申请的实施例中，所述过滤浓缩单元包含N个过滤浓缩器组件，所述N为≥1的整数，所述过滤浓缩器组件由多个过滤浓缩器连接而成，所述过滤浓缩器为管式过滤浓缩器；所述管式过滤浓缩器具有管状的外壳以及形状大小与所述外壳中的管道相适配的滤芯，所述滤芯中设有轴向通道，所述轴向通道构成所述原液腔或所述清液腔；当所述轴向通道构成所述原液腔时，所述外壳中的管道与所述滤芯之间形成所述清液腔，当所述轴向通道构成所述清液腔时，所述外壳中的管道与所述滤芯之间形成所述原液腔；所述过滤浓缩器组件中的管式过滤浓缩器的待浓缩浆料进料结构和已浓缩浆料出料结构依次首尾连接从而使这些管式过滤浓缩器的原液腔串联为一个流动通路，所述流动通路中为首的待浓缩浆料进料结构与所述待浓缩浆料出料结构连接，末尾的已浓缩浆料出料结构与所述已浓缩浆料回流结构连接。In the embodiment of the present application, the filtering and concentrating unit includes N filtering and concentrating components, and the N is an integer ≥ 1. The filtering and concentrating components are connected by multiple filtering and concentrating devices. The filtering and concentrating components It is a tubular filter concentrator; the tubular filter concentrator has a tubular shell and a filter element whose shape and size are adapted to the pipes in the shell. The filter element is provided with an axial channel, and the axial channel constitutes The original liquid cavity or the clear liquid cavity; when the axial channel constitutes the original liquid cavity, the clear liquid cavity is formed between the pipe in the housing and the filter element. When the axial channel constitutes When the clear liquid chamber is used, the original liquid chamber is formed between the pipe in the housing and the filter element; the feed structure of the slurry to be concentrated and the concentrated slurry of the tubular filter concentrator in the filter concentrator assembly The material discharging structures are connected end to end in order so that the raw liquid cavities of these tubular filter concentrators are connected in series into a flow path. The first feed structure of the slurry to be concentrated in the flow path is connected to the discharging structure of the slurry to be concentrated. The final concentrated slurry discharge structure is connected to the concentrated slurry return structure.
本申请的实施例中，所述管式过滤浓缩器的外壳的壁上设有所述清液出料结构。In the embodiment of the present application, the clear liquid discharge structure is provided on the wall of the shell of the tubular filter concentrator.
本申请的实施例中，所述过滤浓缩器组件中的管式过滤浓缩器平行间隔排列设置，相邻管式过滤浓缩器之间的待浓缩浆料进料结构与已浓缩浆料出料结构通过弯头连接从而使相邻管式过滤浓缩器之间的原液腔串联。In the embodiment of the present application, the tubular filter concentrators in the filter concentrator assembly are arranged in parallel and spaced apart, and the feed structure of the slurry to be concentrated and the discharge structure of the concentrated slurry between adjacent tubular filter concentrators are The raw liquid chambers between adjacent tubular filter concentrators are connected in series through elbow connections.
本申请的实施例中，所述过滤浓缩器组件中的弯头呈水平设置。In the embodiment of the present application, the elbow in the filter concentrator assembly is arranged horizontally.
本申请的实施例中，所述过滤浓缩单元包含2个以上过滤浓缩器组件，所述2个以上过滤浓缩器组件上下排列。In the embodiment of the present application, the filtration and concentration unit includes more than two filtration and concentrator assemblies, and the two or more filtration and concentrator assemblies are arranged one above the other.
本申请的实施例中，同一过滤浓缩器组件中不同管式过滤浓缩器的清液出料结构汇流在一起并形成一组清液出料结构，或者，不同过滤浓缩器组件中不同管式过滤浓缩器的清液出料结构汇流在一起并形成一组清液出料结构；所述一组清液出料结构对应一组滤芯，所述出清系统按照滤芯的组别对同一组别的滤芯同时进行反冲再生。In the embodiments of the present application, the clear liquid discharge structures of different tubular filter concentrators in the same filter concentrator assembly are merged together to form a set of clear liquid discharge structures, or different tubular filter concentrators in different filter concentrator assemblies are merged together to form a set of clear liquid discharge structures. The clear liquid discharge structures of the concentrator are brought together to form a group of clear liquid discharge structures; the group of clear liquid discharge structures corresponds to a group of filter elements, and the clear liquid discharge system processes the same group of filter elements according to the group of filter elements. The filter element is backflushed and regenerated at the same time.
本申请的实施例中，所述出清系统包含清液输送及滤芯反冲洗管道系统，所述清液输送及滤芯反冲洗管道系统包含与所述滤芯的组别一一对应的清液输送管以及同样与所述滤芯的组别一一对应的反冲介质输送管，所述清液输送管的输出端通过一对一设置的控制阀与清液输送总管连接，所述清液输送管的输入端连接有用于与对应滤芯的组别的清液出料结构连接的清液输入接口，所述反冲介质输送管的输入端通过一对一设置的控制阀与反冲介质输送总管连接，所述反冲介质输送管的输出端与一一对应的清液输送管的旁路连接；所述出清系统还包含反冲器，所述反冲器的外壳上分别设有反冲介质输入结构和反冲介质输出结构，所述反冲介质输出结构与所述反冲介质输送总管连接。In the embodiment of the present application, the cleaning system includes a clear liquid transportation and filter element backwashing pipeline system, and the clear liquid transportation and filter element backwashing pipeline system includes a clear liquid transportation pipe corresponding to the group of the filter element. And the backflush medium conveying pipe also corresponds to the group of the filter element one-to-one. The output end of the clear liquid conveying pipe is connected to the clear liquid conveying main pipe through a control valve set one to one. The clear liquid conveying pipe has The input end is connected to a clear liquid input interface for connecting to the clear liquid discharge structure of the corresponding filter element group. The input end of the backflush medium delivery pipe is connected to the backflush medium delivery main pipe through a one-to-one control valve. The output end of the recoil medium transport pipe is connected to the bypass of the one-to-one corresponding clear liquid transport pipe; the cleaning system also includes a recoil device, and the shell of the recoil device is respectively provided with a recoil medium input structure and a recoil medium output structure, the recoil medium output structure is connected with the recoil medium transport main pipe.
本申请的实施例中，当不同过滤浓缩器组件中不同管式过滤浓缩器的清液出料结构汇流在一起并形成一组清液出料结构时，每一个过滤浓缩器组件与所述待浓缩浆料出料结构之间均设有流量调节装置，并且，每一个清液输送管上位于该清液输送管上的控制阀与清液输送总管之间均设有背压控制装置。In the embodiment of the present application, when the clear liquid discharge structures of different tubular filter concentrators in different filter concentrator assemblies are brought together and form a set of clear liquid discharge structures, each filter concentrator assembly is connected to the to-be-described There is a flow regulating device between the concentrated slurry discharge structures, and a back pressure control device is installed between the control valve on each clear liquid delivery pipe and the clear liquid delivery main pipe.
本申请的实施例中，所述反冲器的反冲介质输入结构包含反冲液输入结构和压缩气体输入结构，且所述反冲器的外壳上还设有反冲液溢流口，所述反冲液溢流口通过反冲液溢流管连接至所述清液输送总管的输出口，则所述清液输送总管的输出口整体高于所述反冲液溢流口，且所述反冲液溢流管上设有上升段。In the embodiment of the present application, the recoil medium input structure of the recoil device includes a recoil fluid input structure and a compressed gas input structure, and the recoil fluid overflow port is also provided on the outer shell of the recoil device, so The recoil overflow port is connected to the output port of the clear liquid delivery main pipe through a recoil overflow pipe, then the output port of the clear liquid delivery main pipe is overall higher than the recoil overflow port, and the The recoil overflow pipe is provided with an ascending section.
本申请的实施例中，包括汽液分离器，所述汽液分离器的外壳上分别设有汽液混合相输入结构、被分离液相输出结构和被分离气相输出结构，所述汽液混合相输入结构与所述已浓缩浆料出料结构连接，所述被分离液相输出结构与所述已浓缩浆料回流结构连接。In the embodiment of the present application, a vapor-liquid separator is included. The casing of the vapor-liquid separator is respectively provided with a vapor-liquid mixed phase input structure, a separated liquid phase output structure, and a separated gas phase output structure. The vapor-liquid mixing The phase input structure is connected to the concentrated slurry discharge structure, and the separated liquid phase output structure is connected to the concentrated slurry return structure.
本申请的实施例中，包括回流管，所述回流管的一端与所述待浓缩浆料进料结构连接，另一端与所述已浓缩浆料出料结构连接；所述回流管上至少设有阀门和换热冷却器中的阀门。In the embodiment of the present application, a return pipe is included, one end of the return pipe is connected to the feed structure of the slurry to be concentrated, and the other end is connected to the discharge structure of the concentrated slurry; the return pipe is provided with at least There are valves and valves in the heat exchange cooler.
上述共沉淀反应系统以及用于共沉淀反应系统的过滤浓缩装置，通过对过滤浓缩器内部结构的重新设计，取消了原有的搅拌结构，可通过使浆料沿过滤浓缩器的外壳的中心轴线方向在过滤浓缩器的原液腔中流动来避免浆料中的颗粒物堵塞原液腔，延长滤芯上滤饼形成时间。此外，通过对过滤浓缩器内部结构的重新设计可以显著缩小过滤浓缩器直径，有效降低反应浆料在反应釜体外的过滤浓缩器中停留时间，大大减小单独部署过滤浓缩器对反应影响，保证三元前驱体粒度的一致性。The above-mentioned co-precipitation reaction system and the filtration and concentration device used in the co-precipitation reaction system have redesigned the internal structure of the filtration concentrator and canceled the original stirring structure. The slurry can be moved along the central axis of the casing of the filtration concentrator. The flow direction is in the raw liquid cavity of the filter concentrator to avoid the particles in the slurry from blocking the raw liquid cavity and prolong the formation time of the filter cake on the filter element. In addition, by redesigning the internal structure of the filter concentrator, the diameter of the filter concentrator can be significantly reduced, effectively reducing the residence time of the reaction slurry in the filter concentrator outside the reactor, greatly reducing the impact of a separate deployment of the filter concentrator on the reaction, and ensuring Consistency in particle size of ternary precursors.
下面结合附图和具体实施方式对本申请做进一步的说明。本申请的附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过实践了解到。The present application will be further described below in conjunction with the accompanying drawings and specific embodiments. Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice.
附图说明Description of the drawings
构成本说明书的一部分的附图用来辅助对本申请的理解，附图中所提供的内容及其在本说明书中有关的说明可用于解释本申请实施例，但不构成对本申请实施例的不当限定。The drawings that constitute a part of this specification are used to assist in understanding the present application. The content provided in the drawings and the relevant descriptions in this specification can be used to explain the embodiments of the present application, but do not constitute an improper limitation of the embodiments of the present application. .
图1为本申请实施例的一种共沉淀反应系统的示意图。Figure 1 is a schematic diagram of a co-precipitation reaction system according to an embodiment of the present application.
图2为图1所示系统中过滤浓缩器组件的示意图。Figure 2 is a schematic diagram of the filter concentrator assembly in the system shown in Figure 1.
图3为图2所示组件中过滤浓缩器的内部示意图。Figure 3 is an internal schematic diagram of the filter concentrator in the assembly shown in Figure 2.
图4为本申请实施例一种共沉淀反应系统中过滤浓缩器的横截面示意图。Figure 4 is a cross-sectional schematic diagram of a filter concentrator in a co-precipitation reaction system according to an embodiment of the present application.
图5为本申请实施例一种共沉淀反应系统中过滤浓缩器的横截面示意图。Figure 5 is a cross-sectional schematic diagram of a filter concentrator in a co-precipitation reaction system according to an embodiment of the present application.
图6为本申请实施例一种共沉淀反应系统中过滤浓缩器的横截面示意图。Figure 6 is a cross-sectional schematic diagram of a filter concentrator in a co-precipitation reaction system according to an embodiment of the present application.
图7为本申请实施例一种共沉淀反应系统中出清系统的三维结构图。Figure 7 is a three-dimensional structural diagram of the clearing system in a co-precipitation reaction system according to an embodiment of the present application.
图8为图7所示系统在另一角度下的三维结构图。Figure 8 is a three-dimensional structural diagram of the system shown in Figure 7 from another angle.
图9为图7所示系统在另一角度下的三维结构图。Figure 9 is a three-dimensional structural diagram of the system shown in Figure 7 from another angle.
图10为图7所示系统在另一角度下的三维结构图。Figure 10 is a three-dimensional structural diagram of the system shown in Figure 7 from another angle.
图11为图10所示系统隐藏电气箱后的三维结构图。 Figure 11 is a three-dimensional structural diagram of the system shown in Figure 10 after the electrical box is hidden.
图12为图7所示系统的主示意图。Figure 12 is a main schematic diagram of the system shown in Figure 7.
具体实施方式Detailed ways
下面结合附图对本申请进行清楚、完整的说明。本领域普通技术人员在基于这些说明的情况下将能够实现本申请。在结合附图对本申请进行说明前，需要特别指出的是：The following is a clear and complete description of this application in conjunction with the accompanying drawings. A person of ordinary skill in the art will be able to implement the present application based on these descriptions. Before describing this application in conjunction with the accompanying drawings, it should be noted that:
在包括下述说明在内的各部分中所提供的技术方案、技术特征，在不冲突的情况下，这些技术方案、技术特征可以相互组合。此外，在可能的情况下，这些技术方案、技术特征及有关的组合均可以被赋予特定的技术主题而被相关专利所保护。The technical solutions and technical features provided in each section including the following descriptions can be combined with each other as long as there is no conflict. In addition, when possible, these technical solutions, technical features and related combinations can be assigned specific technical themes and protected by relevant patents.
下述说明中涉及到的本申请的实施例通常仅是一部分实施例而不是全部实施例，基于这些实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应当属于专利保护的范围。The embodiments of the present application mentioned in the following description are generally only some embodiments rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without any creative work are , should all fall within the scope of patent protection.
关于本说明书中术语和单位：本说明书及相应权利要求书及有关的部分中的术语“包括”、“包含”、“具有”以及它们的任何变形，意图在于覆盖不排他的包含。另外，本说明书及相应权利要求书及有关的部分中的术语“反应釜”不必理解为单个反应釜，也可以理解为包含主反应釜和次反应釜在内的整体，或者包含反应釜与陈化釜在内的整体。其他相关术语和单位，均可基于本说明书提供相关内容得到合理的解释。Regarding terms and units in this specification: The terms "include", "includes", "having" and any variations thereof in this specification and the corresponding claims and relevant parts are intended to cover non-exclusive inclusion. In addition, the term "reactor" in this description, the corresponding claims and the relevant parts does not have to be understood as a single reaction kettle, but can also be understood as a whole including the main reaction kettle and the secondary reaction kettle, or the reaction kettle and the secondary reaction kettle. The whole including the cauldron. Other related terms and units can be reasonably explained based on the relevant content provided in this manual.
本申请的申请人在提出本申请以前，针对锂离子二次电池正极材料三元前驱体的制备，已研发了两种共沉淀反应系统。下面先对这两种共沉淀反应系统进行简要说明，以便充分理解本申请。为便于描述，下面将这两种共沉淀反应系统分别命名为第一共沉淀反应系统和第二共沉淀反应系统。Before filing this application, the applicant of this application had developed two co-precipitation reaction systems for the preparation of ternary precursors for cathode materials of lithium ion secondary batteries. The following is a brief description of these two co-precipitation reaction systems in order to fully understand this application. For the convenience of description, the two co-precipitation reaction systems are named as the first co-precipitation reaction system and the second co-precipitation reaction system respectively below.
第一共沉淀反应系统The first co-precipitation reaction system
第一共沉淀反应系统主要包括：共沉淀反应单元和过滤浓缩单元。需要时(这主要取决于申请人实际对外售卖的产品范围)，过滤浓缩单元还可以包含下述的出清系统。The first coprecipitation reaction system mainly includes: a coprecipitation reaction unit and a filtration and concentration unit. When necessary (this mainly depends on the actual product range sold by the applicant), the filtration and concentration unit can also include the following cleaning system.
所述共沉淀反应单元包含反应釜，所述反应釜具有外壳和内腔，所述反应釜的外壳上分别设有原料进料结构、待浓缩浆料出料结构和已浓缩浆料回流结构，所述原料进料结构、待浓缩浆料出料结构和已浓缩浆料回流结构分别与所述反应釜的内腔连通，所述反应釜的内腔中设有搅拌结构。The co-precipitation reaction unit includes a reaction kettle. The reaction kettle has an outer shell and an inner cavity. The outer shell of the reaction kettle is respectively provided with a raw material feeding structure, a slurry discharging structure to be concentrated and a concentrated slurry reflux structure. The raw material feeding structure, the slurry to be concentrated slurry discharging structure and the concentrated slurry reflux structure are respectively connected with the inner cavity of the reaction kettle, and a stirring structure is provided in the inner cavity of the reaction kettle.
所述过滤浓缩单元包含过滤浓缩器，所述过滤浓缩器具有外壳和滤芯，所述滤芯在所述过滤浓缩器的外壳中形成原液腔和清液腔，所述过滤浓缩器的外壳上分别设有待浓缩浆料进料结构、已浓缩浆料出料结构和清液出料结构，所述待浓缩浆料进料结构和所述已浓缩浆料出料结构分别与所述原液腔连通，所述清液出料结构与所述清液腔连通。The filtration concentration unit includes a filtration concentrator. The filtration concentrator has a shell and a filter core. The filter core forms a raw liquid cavity and a clear liquid cavity in the shell of the filter concentrator. The shell of the filter concentrator is respectively provided with There is a feed structure for the slurry to be concentrated, a discharge structure for the concentrated slurry and a clear liquid discharge structure. The feed structure for the slurry to be concentrated and the discharge structure for the concentrated slurry are respectively connected with the original liquid cavity, so The clear liquid discharging structure is connected with the clear liquid chamber.
此外，过滤浓缩器中还设有搅拌结构。过滤浓缩器中的搅拌结构包括位于过滤浓缩器中的主轴和安装在主轴上的搅拌桨，主轴由过滤浓缩器外部的电机带动。过滤浓缩器中的滤芯则间隔布置在搅拌桨外围，当搅拌桨旋转时可以对浆料进行搅拌，防止浆料中的颗粒物沉降同时延长滤芯上滤饼形成时间。In addition, the filter concentrator is also equipped with a stirring structure. The stirring structure in the filter concentrator includes a main shaft located in the filter concentrator and a stirring paddle installed on the main shaft. The main shaft is driven by a motor outside the filter concentrator. The filter elements in the filter concentrator are arranged at intervals around the stirring paddle. When the stirring paddle rotates, the slurry can be stirred to prevent the particles in the slurry from settling and prolong the formation time of the filter cake on the filter element.
其中，所述待浓缩浆料出料结构用于与所述待浓缩浆料进料结构连接，所述已浓缩浆料出料结构用于与所述已浓缩浆料回流结构连接，所述原料进料结构用于与共沉淀出清系统反应原料供给设备连接，所述清液出料结构用于与出清系统连接。Wherein, the discharge structure of the slurry to be concentrated is used to connect with the feed structure of the slurry to be concentrated, the discharge structure of the concentrated slurry is used to connect with the reflux structure of the concentrated slurry, and the raw material The feed structure is used to connect with the reaction raw material supply equipment of the co-precipitation clearing system, and the clear liquid discharge structure is used to connect with the clearing system.
上述原料进料结构、待浓缩浆料出料结构、已浓缩浆料回流结、待浓缩浆料进料结构、已浓缩浆料出料结构、清液出料结构分别可以包含对应的管路接口，需要时管路接口上还设有阀门。The above-mentioned raw material feed structure, to-be-concentrated slurry discharge structure, concentrated slurry reflux junction, to-be-concentrated slurry feed structure, concentrated slurry discharge structure, and clear liquid discharge structure may each include corresponding pipeline interfaces. , there are also valves on the pipeline interface when necessary.
锂离子二次电池正极材料三元前驱体的制备制备过程中，将硫酸镍(或氯化镍)、硫酸钴(或氯化钴)、硫酸锰(或氯化锰)配置成一定摩尔浓度的混合盐溶液，将氢氧化钠配置成一定摩尔浓度的碱溶液，用一定浓度的氨水作为络合剂，再将混合盐溶液、碱溶液和络合剂通过原料进料结构以一定的流量加入反应釜，控制反应釜的搅拌速率，反应浆料的温度和pH值，以及反应气氛(目前一般要求反应过程在氮气保护下完成)等，使盐、碱发生中和反应生成三元前驱体晶核并逐渐长大。在反应釜运行过程中，随着反应原料加入反应釜，反应釜中的部分反应浆料被抽入过滤浓缩器，过滤浓缩器中安装有滤芯并设有搅拌结构，通过滤芯对反应浆料进行过滤后可从过滤浓缩器输出清液，清液作为母液可重新用于反应，而过滤浓缩器中的浓缩液则通过已浓缩浆料回流结构返回反应釜。过滤浓缩时，过滤浓缩器中的搅拌桨旋转对浆料进行搅拌，防止浆料中的颗粒物沉降并延长滤芯上滤饼形成时间。In the preparation process of the ternary precursor of the cathode material for lithium ion secondary batteries, nickel sulfate (or nickel chloride), cobalt sulfate (or cobalt chloride), and manganese sulfate (or manganese chloride) are configured into a certain molar concentration. Mix the salt solution, configure the sodium hydroxide into an alkali solution with a certain molar concentration, use a certain concentration of ammonia water as the complexing agent, and then add the mixed salt solution, alkali solution and complexing agent to the reaction through the raw material feed structure at a certain flow rate Kettle, control the stirring rate of the reaction kettle, the temperature and pH value of the reaction slurry, and the reaction atmosphere (currently the reaction process is generally required to be completed under nitrogen protection), etc., so that the salt and alkali can neutralize to generate ternary precursor crystal nuclei. and gradually grew up. During the operation of the reaction kettle, as the reaction raw materials are added to the reaction kettle, part of the reaction slurry in the reaction kettle is pumped into the filter concentrator. The filter concentrator is equipped with a filter element and a stirring structure, and the reaction slurry is processed through the filter element. After filtration, the clear liquid can be output from the filter concentrator, and the clear liquid can be reused as mother liquor for the reaction, while the concentrated liquid in the filter concentrator is returned to the reaction kettle through the concentrated slurry reflux structure. During filtration and concentration, the stirring paddle in the filtration concentrator rotates to stir the slurry, preventing the particles in the slurry from settling and prolonging the formation time of the filter cake on the filter element.
第一共沉淀反应系统的缺陷包括：第一，过滤浓缩器的内部结构设计导致过滤浓缩器体积较大，使得反应浆料在反应釜体外的过滤浓缩器中停留时间较长，而反应过程又受到多种工艺参数影响，一旦环境发生变化就会影响反应，因此，当浆料在过滤浓缩器中停留时间较长时，就会影响反应和三元前驱体粒度的一致性。第二，处理高浓度浆料时滤芯表面滤芯形成时间较短，过滤通量迅速降低。第三，浆料形成滤饼后长时间得不到分散，导致这部分颗粒团聚，影响产品形貌的一致性。第四，过滤浓缩器的罐体和搅拌结构体积较大，导致制造使用成本较高。第五，搅拌结构的电机功率大，能耗高。The defects of the first co-precipitation reaction system include: first, the internal structural design of the filter concentrator results in a larger volume of the filter concentrator, causing the reaction slurry to stay in the filter concentrator outside the reactor for a long time, and the reaction process is Affected by a variety of process parameters, once the environment changes, it will affect the reaction. Therefore, when the slurry stays in the filter concentrator for a long time, it will affect the reaction and the consistency of the particle size of the ternary precursor. Second, when processing high-concentration slurry, the formation time of the filter element on the surface of the filter element is short, and the filtration flux decreases rapidly. Third, the slurry cannot be dispersed for a long time after forming a filter cake, causing the particles to agglomerate and affecting the consistency of the product morphology. Fourth, the tank and stirring structure of the filter concentrator are larger, resulting in higher manufacturing and use costs. Fifth, the motor of the stirring structure has high power and high energy consumption.
第二共沉淀反应系统The second co-precipitation reaction system
针对第一共沉淀反应系统单独部署过滤浓缩器后带来的问题，第二共沉淀反应系统将过滤浓缩器取消，并将过滤浓缩器的滤芯直接安装在反应釜中。这时，反应釜可称为共沉淀反应与过滤浓缩一体化设备。In view of the problems caused by the separate deployment of the filter concentrator in the first coprecipitation reaction system, the second coprecipitation reaction system cancels the filter concentrator and installs the filter element of the filter concentrator directly in the reaction kettle. At this time, the reactor can be called an integrated equipment for co-precipitation reaction and filtration and concentration.
具体而言，所述共沉淀反应与过滤浓缩一体化设备包含组装在一起的反应釜和滤芯，所述反应釜具有外壳和内腔，所述反应釜的外壳上分别设有原料进料结构、已浓缩浆料出料结构和清液出料结构，所述反应釜的内腔中设有搅拌结构，所述滤芯安装在所述过滤浓缩器的外壳中形成原液腔和清液腔。 Specifically, the integrated equipment for co-precipitation reaction and filtration and concentration includes a reaction kettle and a filter element assembled together. The reaction kettle has an outer shell and an inner cavity. The outer shell of the reaction kettle is respectively provided with a raw material feeding structure, Concentrated slurry discharging structure and clear liquid discharging structure, the inner cavity of the reaction kettle is provided with a stirring structure, and the filter element is installed in the shell of the filter concentrator to form a raw liquid cavity and a clear liquid cavity.
所述反应釜的内腔与所述原液腔连通，所述原料进料结构和已浓缩浆料出料结构分别与所述反应釜的内腔连通，所述原料进料结构用于与共沉淀反应原料供给设备连接，所述清液出料结构与所述清液腔连通，所述清液出料结构用于与出清系统连接。The inner cavity of the reaction kettle is connected to the original liquid cavity, the raw material feeding structure and the concentrated slurry discharging structure are respectively connected to the inner cavity of the reaction kettle, and the raw material feeding structure is used for co-precipitation reaction. The raw material supply equipment is connected, the clear liquid discharging structure is connected with the clear liquid chamber, and the clear liquid discharging structure is used to connect with the clearing system.
由于反应与过滤浓缩均在共沉淀反应与过滤浓缩一体化设备中进行，这样，反应浆料始终处于同一环境中，杜绝了单独部署过滤浓缩器对反应的影响。但是，需要指出：共沉淀反应与过滤浓缩一体化设备对滤芯的防材料破损稳定性要求更高。因为如果一旦滤芯发生材料破损，从滤芯上脱落的材料就会混入反应浆料，导致反应浆料污染。Since the reaction and filtration concentration are all carried out in the integrated equipment of co-precipitation reaction and filtration concentration, the reaction slurry is always in the same environment, eliminating the impact of a separate deployment of a filter concentrator on the reaction. However, it should be pointed out that the integrated equipment of co-precipitation reaction and filtration and concentration has higher requirements on the stability of the filter element against material damage. Because once the material of the filter element is damaged, the material falling off the filter element will be mixed into the reaction slurry, causing contamination of the reaction slurry.
此外，第二共沉淀反应系统并不能解决共沉淀反应与过滤浓缩一体化设备处理高浓度浆料时滤芯表面滤芯形成时间较短，过滤通量迅速降低；浆料形成滤饼后长时间得不到分散，导致这部分颗粒团聚，影响产品形貌的一致性；共沉淀反应与过滤浓缩一体化设备的罐体和搅拌结构体积较大，导致制造使用成本较高；搅拌结构的电机功率大，能耗高等问题。In addition, the second co-precipitation reaction system cannot solve the problem that when the integrated equipment of co-precipitation reaction and filtration and concentration processes high-concentration slurry, the formation time of the filter element surface is short, and the filtration flux is rapidly reduced; the slurry cannot be filtered for a long time after forming a filter cake. to disperse, causing the particles to agglomerate, affecting the consistency of the product morphology; the tank and stirring structure of the co-precipitation reaction and filtration concentration integrated equipment are larger, resulting in higher manufacturing and use costs; the motor power of the stirring structure is large, High energy consumption and other issues.
此外，无论是第一共沉淀反应系统还是第二共沉淀反应系统，滤芯过滤出的清液均需通过出清系统输出。目前，出清系统主要包括管道、阀门、反冲器等多个零部件，这些零部件是随着过滤浓缩器或共沉淀反应与过滤浓缩一体化设备的现场安装再进行进行现场临时安装的，施工强度大、时间长，影响项目施工进度。In addition, whether it is the first co-precipitation reaction system or the second co-precipitation reaction system, the clear liquid filtered out by the filter element needs to be output through the clearing system. At present, the purge system mainly includes pipelines, valves, backwashers and other components. These components are temporarily installed on site following the on-site installation of the filter concentrator or the integrated equipment for co-precipitation reaction and filtration and concentration. The construction intensity is high and the time is long, which affects the project construction progress.
于是，本申请提出以下实施例，将针对上述至少一种问题，给出对应的解决方案。Therefore, this application proposes the following embodiments to provide corresponding solutions to at least one of the above problems.
第三共沉淀反应系统The third co-precipitation reaction system
一种共沉淀反应系统，包括共沉淀反应单元和过滤浓缩单元。需要时(这主要取决于申请人实际对外售卖的产品范围)，过滤浓缩单元还可以包含下述的出清系统。A co-precipitation reaction system includes a co-precipitation reaction unit and a filtration and concentration unit. When necessary (this mainly depends on the actual product range sold by the applicant), the filtration and concentration unit can also include the following cleaning system.
所述共沉淀反应单元包含反应釜，所述反应釜具有外壳和内腔，所述反应釜的外壳上分别设有原料进料结构、待浓缩浆料出料结构和已浓缩浆料回流结构，所述原料进料结构、待浓缩浆料出料结构和已浓缩浆料回流结构分别与所述反应釜的内腔连通，所述反应釜的内腔中设有搅拌结构。The co-precipitation reaction unit includes a reaction kettle. The reaction kettle has an outer shell and an inner cavity. The outer shell of the reaction kettle is respectively provided with a raw material feeding structure, a slurry discharging structure to be concentrated and a concentrated slurry reflux structure. The raw material feeding structure, the slurry to be concentrated slurry discharging structure and the concentrated slurry reflux structure are respectively connected with the inner cavity of the reaction kettle, and a stirring structure is provided in the inner cavity of the reaction kettle.
所述过滤浓缩单元包含过滤浓缩器，所述过滤浓缩器具有外壳和滤芯，所述滤芯在所述过滤浓缩器的外壳中形成原液腔和清液腔，所述过滤浓缩器的外壳上分别设有待浓缩浆料进料结构、已浓缩浆料出料结构和清液出料结构，所述待浓缩浆料进料结构和所述已浓缩浆料出料结构分别与所述原液腔连通，所述清液出料结构与所述清液腔连通。The filtration concentration unit includes a filtration concentrator. The filtration concentrator has a shell and a filter core. The filter core forms a raw liquid cavity and a clear liquid cavity in the shell of the filter concentrator. The shell of the filter concentrator is respectively provided with There is a feed structure for the slurry to be concentrated, a discharge structure for the concentrated slurry and a clear liquid discharge structure. The feed structure for the slurry to be concentrated and the discharge structure for the concentrated slurry are respectively connected with the original liquid cavity, so The clear liquid discharging structure is connected with the clear liquid chamber.
其中，所述待浓缩浆料出料结构用于与所述待浓缩浆料进料结构连接，所述已浓缩浆料出料结构用于与所述已浓缩浆料回流结构连接，所述原料进料结构用于与共沉淀反应原料供给设备连接，所述清液出料结构用于与出清系统连接。Wherein, the discharge structure of the slurry to be concentrated is used to connect with the feed structure of the slurry to be concentrated, the discharge structure of the concentrated slurry is used to connect with the reflux structure of the concentrated slurry, and the raw material The feeding structure is used to connect with the co-precipitation reaction raw material supply equipment, and the clear liquid discharging structure is used to connect with the clearing system.
在所述过滤浓缩器中，所述滤芯具有相互垂直的第一边缘与第二边缘，所述滤芯的过滤面的面积基本由所述第一边缘的长度与所述第二边缘的长度的乘积确定，所述第一边缘的长度的方向与所述过滤浓缩器的外壳的中心轴线的方向一致，所述待浓缩浆料进料结构与所述已浓缩浆料出料结构分别设置在所述过滤浓缩器的外壳上位于所述中心轴线方向上的两端的部位并分别与原液腔两端导通。In the filter concentrator, the filter element has a first edge and a second edge that are perpendicular to each other, and the area of the filter surface of the filter element is basically determined by the product of the length of the first edge and the length of the second edge. It is determined that the direction of the length of the first edge is consistent with the direction of the central axis of the housing of the filter concentrator, and the feed structure of the slurry to be concentrated and the discharge structure of the concentrated slurry are respectively arranged on the The parts of the shell of the filter concentrator located at both ends in the direction of the central axis are connected to both ends of the original liquid chamber respectively.
并且，若以与所述中心轴线垂直并与所述滤芯的过滤面相交的平面为横截面，则：在所述横截面上，所述原液腔以第一图形的形式分布，所述第一图形为封闭图形，所述封闭图形的形状为圆形、环形或多边形，所述横截面上位于所述过滤浓缩器的外壳内且除所述第一图形外的区域基本上由第二图形和第三图形组成，所述清液腔以所述第二图形的形式分布，所述滤芯的过滤材料以所述第三图形的形式分布，并且，所述中心轴线在所述横截面上的对应中心点靠近或位于所述第一图形、第二图形或第三图形中。Moreover, if a plane perpendicular to the central axis and intersecting the filtering surface of the filter element is taken as a cross section, then: on the cross section, the original liquid chamber is distributed in the form of a first figure, and the first The figure is a closed figure, the shape of the closed figure is a circle, an annular or a polygon, and the cross-section is located in the shell of the filter concentrator and the area except the first figure is basically composed of the second figure and The third pattern is composed of the clear liquid chamber distributed in the form of the second pattern, the filter material of the filter element distributed in the form of the third pattern, and the corresponding position of the central axis on the cross section The center point is close to or located in the first figure, the second figure or the third figure.
方式一method one
图1为本申请实施例的一种共沉淀反应系统的示意图。图2为图1所示系统中过滤浓缩器组件的示意图。图3为图2所示组件中过滤浓缩器的内部示意图。如图1-3所示，一种共沉淀反应系统，包括共沉淀反应单元(图中未示出)和过滤浓缩单元。Figure 1 is a schematic diagram of a co-precipitation reaction system according to an embodiment of the present application. Figure 2 is a schematic diagram of the filter concentrator assembly in the system shown in Figure 1. Figure 3 is an internal schematic diagram of the filter concentrator in the assembly shown in Figure 2. As shown in Figure 1-3, a co-precipitation reaction system includes a co-precipitation reaction unit (not shown in the figure) and a filtration and concentration unit.
所述共沉淀反应单元包含反应釜，所述反应釜具有外壳和内腔，所述反应釜的外壳上分别设有原料进料结构、待浓缩浆料出料结构A和已浓缩浆料回流结构B，所述原料进料结构、待浓缩浆料出料结构A和已浓缩浆料回流结构B分别与所述反应釜的内腔连通，所述反应釜的内腔中设有搅拌结构。The co-precipitation reaction unit includes a reaction kettle, which has an outer shell and an inner cavity. The outer shell of the reaction kettle is respectively provided with a raw material feeding structure, a slurry discharging structure A to be concentrated, and a concentrated slurry reflux structure. B. The raw material feeding structure, the slurry to be concentrated slurry discharging structure A and the concentrated slurry reflux structure B are respectively connected with the inner cavity of the reaction kettle, and a stirring structure is provided in the inner cavity of the reaction kettle.
所述过滤浓缩单元包含过滤浓缩器10，所述过滤浓缩器10具有外壳11和滤芯12，所述滤芯12在所述过滤浓缩器的外壳11中形成原液腔13和清液腔14，所述过滤浓缩器10的外壳11上分别设有待浓缩浆料进料结构15、已浓缩浆料出料结构16和清液出料结构17，所述待浓缩浆料进料结构15和所述已浓缩浆料出料结构16分别与所述原液腔13连通，所述清液出料结构17与所述清液腔14连通。The filtration concentration unit includes a filtration concentrator 10. The filtration concentrator 10 has a housing 11 and a filter core 12. The filter core 12 forms a raw liquid chamber 13 and a clear liquid chamber 14 in the housing 11 of the filtration concentrator. The housing 11 of the filter concentrator 10 is respectively provided with a feed structure 15 for the slurry to be concentrated, a discharge structure 16 for the concentrated slurry, and a discharge structure 17 for the clear liquid. The slurry discharging structure 16 is connected with the original liquid chamber 13 respectively, and the clear liquid discharging structure 17 is connected with the clear liquid chamber 14 .
其中，所述待浓缩浆料出料结构A用于与所述待浓缩浆料进料结构15连接，所述已浓缩浆料出料结构16用于与所述已浓缩浆料回流结构B连接，所述原料进料结构用于与共沉淀反应原料供给设备连接，所述清液出料结构17用于与出清系统200连接。Wherein, the to-be-concentrated slurry discharge structure A is used to connect to the to-be-concentrated slurry feed structure 15, and the concentrated slurry discharge structure 16 is used to connect to the concentrated slurry return structure B , the raw material feed structure is used to connect with the co-precipitation reaction raw material supply equipment, and the clear liquid discharge structure 17 is used to connect with the clearing system 200.
具体而言，所述过滤浓缩单元包含N个过滤浓缩器组件100，所述N为≥1的整数，所述过滤浓缩器组件100由多个过滤浓缩器10连接而成，所述过滤浓缩器10为管式过滤浓缩器10’。Specifically, the filtering and concentrating unit includes N filtering and concentrator assemblies 100 , where N is an integer ≥ 1. The filtering and concentrating device 100 is connected by a plurality of filtering and concentrating devices 10 . The filtering and concentrating device is 10 is a tubular filter concentrator 10'.
所述管式过滤浓缩器10’具有管状的外壳11以及形状大小与所述外壳11中的管道相适配的滤芯12，所述滤芯12中设有轴向通道12A，所述轴向通道12A构成所述原液腔13或所述清液腔14。The tubular filter concentrator 10' has a tubular shell 11 and a filter element 12 whose shape and size are adapted to the pipes in the shell 11. The filter element 12 is provided with an axial channel 12A. The axial channel 12A The original liquid chamber 13 or the clear liquid chamber 14 is formed.
当所述轴向通道12A构成所述原液腔13时，所述外壳11中的管道与所述滤芯12之间形成所述清液腔14。当所述轴向通道12A构成所述清液腔14时，所述外壳11中的管道与所述滤芯12之间形成所述原液腔13。 When the axial channel 12A forms the original liquid chamber 13 , the clear liquid chamber 14 is formed between the pipe in the housing 11 and the filter element 12 . When the axial channel 12A forms the clear liquid chamber 14, the original liquid chamber 13 is formed between the pipe in the housing 11 and the filter element 12.
此外，所述过滤浓缩器组件100中的管式过滤浓缩器10’的待浓缩浆料进料结构15和已浓缩浆料出料结构16依次首尾连接从而使这些管式过滤浓缩器10’的原液腔13串联为一个流动通路，所述流动通路中为首的待浓缩浆料进料结构15与所述待浓缩浆料出料结构A连接，末尾的已浓缩浆料出料结构16与所述已浓缩浆料回流结构B连接。In addition, the feed structure 15 of the slurry to be concentrated and the discharge structure 16 of the concentrated slurry of the tubular filter concentrator 10' in the filter concentrator assembly 100 are connected end to end in order, so that the The raw liquid chamber 13 is connected in series to form a flow path. The first feeding structure 15 of the slurry to be concentrated in the flow path is connected to the discharging structure A of the slurry to be concentrated, and the discharging structure 16 of the concentrated slurry at the end is connected to the discharging structure A of the slurry to be concentrated. The concentrated slurry return structure B is connected.
如图2-3所示，在一种具体实施方式中，滤芯12是一个管状滤芯，因此，所述轴向通道12A即为该管状滤芯的内部管道，该内部管道构成原液腔13。所述管式过滤浓缩器10’的外壳11的壁上设有所述清液出料结构。As shown in FIGS. 2-3 , in a specific embodiment, the filter element 12 is a tubular filter element. Therefore, the axial channel 12A is the internal pipeline of the tubular filter element, and the internal pipeline constitutes the original liquid chamber 13 . The clear liquid discharge structure is provided on the wall of the shell 11 of the tubular filter concentrator 10'.
针对上述管状滤芯，可以认为，该管状滤芯具有相互垂直的第一边缘与第二边缘，其中，第一边缘可以看成由管状滤芯内部管道构成的圆柱面的母线(与管式过滤浓缩器10’的外壳11的中心轴线的方向一致)，第二边缘可以看成管状滤芯内部管道构成的圆柱面的底边或顶边形成的圆。在这里，管状滤芯的过滤面积等于所述第一边缘的长度与所述第二边缘的长度的乘积。Regarding the above-mentioned tubular filter element, it can be considered that the tubular filter element has a first edge and a second edge that are perpendicular to each other, wherein the first edge can be regarded as the generatrix of the cylindrical surface composed of the internal pipes of the tubular filter element (similar to the tubular filter concentrator 10 'The direction of the central axis of the housing 11 is consistent), and the second edge can be seen as a circle formed by the bottom edge or top edge of the cylindrical surface formed by the internal pipes of the tubular filter element. Here, the filtering area of the tubular filter element is equal to the product of the length of the first edge and the length of the second edge.
上述实施例的共沉淀反应系统通过对过滤浓缩器结构的重新设计，取消了原有的搅拌结构，可通过使浆料沿过滤浓缩器的外壳的中心轴线方向在过滤浓缩器的原液腔中流动来避免浆料中的颗粒物堵塞原液腔，延长滤芯上滤饼形成时间。此外，管式过滤浓缩器10’可以显著缩小过滤浓缩器直径，有效降低反应浆料在反应釜体外的过滤浓缩器中停留时间，大大减小单独部署过滤浓缩器对反应影响，保证三元前驱体粒度的一致性。In the co-precipitation reaction system of the above embodiment, the original stirring structure is canceled by redesigning the structure of the filter concentrator, and the slurry can flow in the raw liquid cavity of the filter concentrator along the central axis direction of the shell of the filter concentrator. To prevent particles in the slurry from clogging the raw liquid cavity and prolong the formation time of the filter cake on the filter element. In addition, the tubular filter concentrator 10' can significantly reduce the diameter of the filter concentrator, effectively reduce the residence time of the reaction slurry in the filter concentrator outside the reactor, greatly reduce the impact of a separate deployment of the filter concentrator on the reaction, and ensure the ternary precursor consistency of body granularity.
优选的，如图2所示，所述过滤浓缩器组件100中的管式过滤浓缩器10’平行间隔排列设置，相邻管式过滤浓缩器10’之间的待浓缩浆料进料结构15与已浓缩浆料出料结构16通过弯头101连接从而使相邻管式过滤浓缩器10’之间的原液腔13串联。这样，就使得过滤浓缩器组件100结构更为紧凑，减小过滤浓缩器组件100的空间占用。Preferably, as shown in Figure 2, the tubular filter concentrators 10' in the filter concentrator assembly 100 are arranged in parallel and spaced apart, and the feed structure 15 of the slurry to be concentrated is between adjacent tubular filter concentrators 10'. It is connected to the concentrated slurry discharge structure 16 through an elbow 101 so that the raw liquid chambers 13 between adjacent tubular filter concentrators 10' are connected in series. In this way, the structure of the filter concentrator assembly 100 is made more compact, and the space occupied by the filter concentrator assembly 100 is reduced.
另外，所述过滤浓缩器组件100中的弯头101最好呈水平设置。这主要是因为，浆料中含有固相颗粒，如果弯头101呈竖直设置，容易导致固相颗粒完全堵死弯头101；当弯头101呈水平设置时，即使固相颗粒在弯头101中沉淀，也会在水平设置的弯头101中分层而在弯头101上部流出一定流动空间。In addition, the elbow 101 in the filter concentrator assembly 100 is preferably arranged horizontally. This is mainly because the slurry contains solid particles. If the elbow 101 is arranged vertically, it is easy to cause the solid particles to completely block the elbow 101; when the elbow 101 is arranged horizontally, even if the solid particles are in the elbow Precipitation in 101 will also stratify in the horizontally arranged elbow 101 and flow out of a certain flow space in the upper part of the elbow 101.
当过滤浓缩器组件100中的弯头101呈水平设置时，显然，过滤浓缩器组件100也是呈水平设置的。这样，当所述过滤浓缩单元包含2个以上过滤浓缩器组件时，所述2个以上过滤浓缩器组件将呈上下排列。When the elbow 101 in the filter concentrator assembly 100 is arranged horizontally, it is obvious that the filter concentrator assembly 100 is also arranged horizontally. In this way, when the filtration and concentration unit includes more than two filtration and concentrator assemblies, the two or more filtration and concentrator assemblies will be arranged one above the other.
可选的，同一过滤浓缩器组件100中不同管式过滤浓缩器10’的清液出料结构17可汇流在一起并形成一组清液出料结构；所述一组清液出料结构17对应一组滤芯12，所述出清系统200按照滤芯12的组别对同一组别的滤芯12同时进行反冲再生。Optionally, the clear liquid discharge structures 17 of different tubular filter concentrators 10' in the same filter concentrator assembly 100 can be merged together to form a set of clear liquid discharge structures; the set of clear liquid discharge structures 17 Corresponding to a group of filter elements 12, the cleaning system 200 performs backflush regeneration on the filter elements 12 of the same group at the same time according to the group of filter elements 12.
或者，不同过滤浓缩器组件100中不同管式过滤浓缩器10’的清液出料结构17汇流在一起并形成一组清液出料结构；所述一组清液出料结构17对应一组滤芯12，所述出清系统200按照滤芯12的组别对同一组别的滤芯12同时进行反冲再生。Alternatively, the clear liquid discharge structures 17 of different tubular filter concentrators 10' in different filter concentrator assemblies 100 are brought together to form a group of clear liquid discharge structures; the group of clear liquid discharge structures 17 corresponds to a group of clear liquid discharge structures. For the filter element 12, the cleaning system 200 performs backflush regeneration on the filter elements 12 of the same group at the same time according to the group of the filter element 12.
具体的，如图1所示，在这里采用了将不同过滤浓缩器组件100中不同管式过滤浓缩器10’的清液出料结构17汇流在一起并形成一组清液出料结构的方式。并且，如果将过滤浓缩器组件100中的不同管式过滤浓缩器10’按照顺序编号，则一组清液出料结构连接是不同过滤浓缩器组件100中同一序号的管式过滤浓缩器10’，可便于后续对各管式过滤浓缩器10’中原液腔13与清液腔14之间的压差的控制。Specifically, as shown in Figure 1, the clear liquid discharge structures 17 of different tubular filter concentrators 10' in different filter concentrator assemblies 100 are brought together to form a set of clear liquid discharge structures. . Moreover, if the different tubular filter concentrators 10' in the filter concentrator assembly 100 are numbered sequentially, then a set of clear liquid discharge structures are connected to the tubular filter concentrators 10' with the same serial number in the different filter concentrator assemblies 100. , which can facilitate subsequent control of the pressure difference between the original liquid chamber 13 and the clear liquid chamber 14 in each tubular filter concentrator 10'.
更具体的，所述出清系统200包含清液输送及滤芯反冲洗管道系统210，所述清液输送及滤芯反冲洗管道系统210包含与所述滤芯12的组别一一对应的清液输送管211以及同样与所述滤芯的组别一一对应的反冲介质输送管212，所述清液输送管211的输出端通过一对一设置的控制阀213与清液输送总管215连接，所述清液输送管211的输入端连接有用于与对应滤芯的组别的清液出料结构连接的清液输入接口，所述反冲介质输送管212的输入端通过一对一设置的控制阀214与反冲介质输送总管216连接，所述反冲介质输送管212的输出端与一一对应的清液输送管的旁路连接。More specifically, the cleaning system 200 includes a clear liquid transportation and filter element backwashing pipeline system 210. The clear liquid transportation and filter element backwashing pipeline system 210 includes a clear liquid transportation system that corresponds to the group of the filter element 12. The pipe 211 and the backflush medium delivery pipe 212 also correspond to the group of the filter element one-to-one. The output end of the clear liquid delivery pipe 211 is connected to the clear liquid delivery main pipe 215 through a one-to-one control valve 213, so The input end of the clear liquid delivery pipe 211 is connected to a clear liquid input interface for connecting to the clear liquid discharge structure of the corresponding filter element group, and the input end of the backflush medium delivery pipe 212 passes through a control valve set one to one 214 is connected to the backflush medium transport main pipe 216, and the output end of the backflush medium transport pipe 212 is connected to the bypass of the one-to-one corresponding clear liquid transport pipe.
此外，所述出清系统200还包含反冲器217，所述反冲器217的外壳上分别设有反冲介质输入结构和反冲介质输出结构，所述反冲介质输出结构与所述反冲介质输送总管216连接。In addition, the cleaning system 200 also includes a recoil device 217. The shell of the recoil device 217 is respectively provided with a recoil medium input structure and a recoil medium output structure. The recoil medium output structure is connected with the recoil medium output structure. The red medium transport main pipe 216 is connected.
上述出清系统200既可以实现清液的输送，也可以实现按照滤芯12的组别对同一组别的滤芯12同时进行反冲再生。The above-mentioned cleaning system 200 can not only realize the transportation of clear liquid, but also realize the simultaneous backflush regeneration of filter elements 12 in the same group according to the group of filter elements 12 .
另外，还可在每一个过滤浓缩器组件100与所述待浓缩浆料出料结构之间均设置流量调节装置102，并且，每一个清液输送211管上位于该清液输送管211上的控制阀213与清液输送总管215之间均设有背压控制装置218。In addition, a flow adjustment device 102 can also be provided between each filter concentrator assembly 100 and the slurry discharge structure to be concentrated, and each clear liquid delivery pipe 211 is located on the clear liquid delivery pipe 211 A back pressure control device 218 is provided between the control valve 213 and the clear liquid delivery main pipe 215.
其中，流量调节装置102可以采用流量调节阀。背压控制装置218同样可采用可调节流量的阀门，这样，通过调节阀门的开度就可以对清液输送管211上的背压进行调节。Among them, the flow regulating device 102 may use a flow regulating valve. The back pressure control device 218 can also use a flow-adjustable valve, so that the back pressure on the clear liquid delivery pipe 211 can be adjusted by adjusting the opening of the valve.
由于在每一个过滤浓缩器组件100与所述待浓缩浆料出料结构之间均设置流量调节装置102，因此，可以通过控制流量调节装置102使每一个过滤浓缩器组件100中通过原液腔13串联而成的流动通路的浆料流量平衡，从而使每一个过滤浓缩器组件100中过滤面上的浆料流速相近，保证每一个过滤浓缩器组件100中过滤面的抗污染性能。Since a flow regulating device 102 is provided between each filtering and concentrator assembly 100 and the slurry discharging structure to be concentrated, the flow regulating device 102 can be controlled to allow the raw liquid chamber 13 in each filtering and concentrating assembly 100 to pass through. The slurry flow rate of the flow paths formed in series is balanced, so that the slurry flow rate on the filter surface of each filter concentrator assembly 100 is similar, ensuring the anti-pollution performance of the filter surface of each filter concentrator assembly 100 .
在使每一个过滤浓缩器组件100中通过原液腔13串联而成的流动通路的浆料流量平衡后，再通过调节各背压控制装置218，可以使得不同过滤浓缩器组件100中同一序号的管式过滤浓缩器10’内原液腔13与清液腔14之间的压差大致相同。当使得不同过滤浓缩器组件100中同一序号的管式过滤浓缩器10’内原液腔13与清液腔14之间的压差大致相同时，不同过滤浓缩器组件100中同一序号的管式过滤浓缩器10’的运行状况相似，当按照滤芯12的组别对同一组别的滤芯12同时进行反冲再生时，对不同过滤浓缩器组件1 00中同一序号的管式过滤浓缩器10’的滤芯的反冲再生效果更均衡。After balancing the slurry flow rate of the flow paths connected in series through the raw liquid chambers 13 in each filter concentrator assembly 100, and then adjusting each back pressure control device 218, the tubes with the same serial number in different filter concentrator assemblies 100 can be adjusted. The pressure difference between the raw liquid chamber 13 and the clear liquid chamber 14 in the filter concentrator 10' is approximately the same. When the pressure difference between the raw liquid chamber 13 and the clear liquid chamber 14 in the tubular filter concentrators 10' with the same serial number in different filter concentrator assemblies 100 is approximately the same, the tubular filter concentrators with the same serial number in different filter concentrator assemblies 100 will The operating conditions of the concentrator 10' are similar. When the filter elements 12 of the same group are simultaneously backflushed and regenerated according to the group of the filter elements 12, different filter concentrator assemblies 1 The filter element of the tubular filter concentrator 10' with the same serial number in 00 has a more balanced backflush regeneration effect.
可选的，共沉淀反应系统还可以包括汽液分离器103，所述汽液分离器103的外壳上分别设有汽液混合相输入结构、被分离液相输出结构和被分离气相输出结构，所述汽液混合相输入结构与所述已浓缩浆料出料结构连接，所述被分离液相输出结构与所述已浓缩浆料回流结构B连接。Optionally, the coprecipitation reaction system may also include a vapor-liquid separator 103. The casing of the vapor-liquid separator 103 is respectively provided with a vapor-liquid mixed phase input structure, a separated liquid phase output structure, and a separated gas phase output structure. The vapor-liquid mixed phase input structure is connected to the concentrated slurry discharge structure, and the separated liquid phase output structure is connected to the concentrated slurry reflux structure B.
可选的，共沉淀反应系统还可以包括回流管104，所述回流管104的一端与所述待浓缩浆料进料结构A连接，另一端与所述已浓缩浆料出料结构连接；所述回流管104上至少设有阀门和换热冷却器105中的阀门。Optionally, the co-precipitation reaction system may also include a reflux pipe 104, one end of the reflux pipe 104 is connected to the feed structure A of the slurry to be concentrated, and the other end is connected to the discharge structure of the concentrated slurry; so The return pipe 104 is provided with at least valves and valves in the heat exchange cooler 105 .
通过回流管104可以将浆料返回过滤浓缩单元进一步进行过滤浓缩。浓缩过程中浆料温度升高，可通过换热冷却器105进行降温。The slurry can be returned to the filtration and concentration unit through the return pipe 104 for further filtration and concentration. During the concentration process, the slurry temperature rises and can be cooled down by the heat exchange cooler 105.
此外，所述共沉淀反应单元与所述过滤浓缩单元之间设有进料泵106。In addition, a feed pump 106 is provided between the co-precipitation reaction unit and the filtration concentration unit.
方式二Method 2
图4为本申请实施例一种共沉淀反应系统中过滤浓缩器的横截面示意图。图5为本申请实施例一种共沉淀反应系统中过滤浓缩器的横截面示意图。图6为本申请实施例一种共沉淀反应系统中过滤浓缩器的横截面示意图。Figure 4 is a cross-sectional schematic diagram of a filter concentrator in a co-precipitation reaction system according to an embodiment of the present application. Figure 5 is a cross-sectional schematic diagram of a filter concentrator in a co-precipitation reaction system according to an embodiment of the present application. Figure 6 is a cross-sectional schematic diagram of a filter concentrator in a co-precipitation reaction system according to an embodiment of the present application.
如图4所示，该实施例中，是将上一实施中的滤芯12从管状滤芯更换为多通道滤芯。多通道滤芯中设有多个所述轴向通道12A。As shown in Figure 4, in this embodiment, the filter element 12 in the previous embodiment is replaced from a tubular filter element to a multi-channel filter element. A plurality of the axial channels 12A are provided in the multi-channel filter element.
可以认为，该多通道滤芯同样具有相互垂直的第一边缘与第二边缘，其中，第一边缘可以看成由多通道滤芯任一内部管道构成的圆柱面的母线(与管式过滤浓缩器10’的外壳11的中心轴线的方向一致)，第二边缘可以看成多通道滤芯中任一内部管道构成的圆柱面的底边或顶边形成的圆。在这里，多通道滤芯的过滤面积等于所述第一边缘的长度与所述第二边缘的长度的乘积再乘以轴向通道12A的数量。It can be considered that the multi-channel filter element also has a first edge and a second edge that are perpendicular to each other, wherein the first edge can be regarded as the generatrix of a cylindrical surface composed of any internal pipe of the multi-channel filter element (similar to the tubular filter concentrator 10 'The direction of the central axis of the housing 11 is consistent), and the second edge can be seen as a circle formed by the bottom edge or the top edge of the cylindrical surface formed by any internal pipe in the multi-channel filter element. Here, the filtration area of the multi-channel filter element is equal to the product of the length of the first edge and the length of the second edge multiplied by the number of axial channels 12A.
多通道滤芯的过滤面积较大，因此，管式过滤浓缩器10’的外壳11的直径可以适应性增大。The filtering area of the multi-channel filter element is larger, so the diameter of the housing 11 of the tubular filter concentrator 10' can be increased adaptively.
方式三Method three
如图5所示，该实施例中，滤芯12采用了一种环管形滤芯，即具有内外两层过滤面，内外两层过滤面之间为原液腔13。内层过滤面中以及外层过滤面与外壳11之间为净液腔14。As shown in Figure 5, in this embodiment, the filter element 12 adopts a ring-shaped filter element, that is, it has two layers of inner and outer filtering surfaces, and the original liquid chamber 13 is between the two inner and outer filtering surfaces. A clean liquid chamber 14 is located in the inner filter surface and between the outer filter surface and the outer shell 11 .
可以认为，该环管形滤芯同样具有相互垂直的第一边缘与第二边缘，其中，第一边缘可以看成由外层过滤面或内层过滤面构成的圆柱面的母线(与管式过滤浓缩器10’的外壳11的中心轴线的方向一致)，第二边缘可以看成外层过滤面或内层过滤面构成的圆柱面的底边或顶边形成的圆。环管形滤芯的过滤面积等于外层过滤面对应所述第一边缘的长度与所述第二边缘的长度的乘积再加上内层过滤面对应所述第一边缘的长度与所述第二边缘的长度的乘积。It can be considered that the annular tubular filter element also has a first edge and a second edge that are perpendicular to each other, wherein the first edge can be regarded as the generatrix of the cylindrical surface composed of the outer filter surface or the inner filter surface (similar to the tubular filter element). The direction of the central axis of the shell 11 of the concentrator 10' is consistent), and the second edge can be regarded as a circle formed by the bottom edge or the top edge of the cylindrical surface formed by the outer filter surface or the inner filter surface. The filter area of the annular filter element is equal to the product of the length of the outer filter surface corresponding to the first edge and the length of the second edge plus the length of the inner filter surface corresponding to the first edge and the length of the second edge. The product of the lengths of the second edges.
方式四Method four
如图6所示，该实施例中，滤芯12采用了一种板式滤芯，板式滤芯将外壳11分隔为多个腔体，部分腔体为原液腔13，部分腔体为净液腔14。As shown in FIG. 6 , in this embodiment, the filter element 12 adopts a plate filter element. The plate filter element divides the housing 11 into multiple cavities, some of which are raw liquid chambers 13 and some of which are clean liquid chambers 14 .
可以认为，该板式滤芯同样具有相互垂直的第一边缘与第二边缘，其中，第一边缘可以看成板式滤芯的长度(与管式过滤浓缩器10’的外壳11的中心轴线的方向一致)，第二边缘可以看成板式滤芯的宽度。板式滤芯的过滤面积等第一边缘的长度与所述第二边缘的长度的乘积再乘以板式滤芯的数量。It can be considered that the plate filter element also has a first edge and a second edge that are perpendicular to each other, wherein the first edge can be regarded as the length of the plate filter element (the direction is consistent with the central axis of the shell 11 of the tubular filter concentrator 10') , the second edge can be regarded as the width of the plate filter element. The product of the length of the first edge such as the filter area of the plate filter element and the length of the second edge is multiplied by the number of plate filter elements.
总之，第三共沉淀反应系统的过滤浓缩器可以概括为：在过滤浓缩器中，所述滤芯具有相互垂直的第一边缘与第二边缘，所述滤芯的过滤面的面积基本由所述第一边缘的长度与所述第二边缘的长度的乘积确定，所述第一边缘的长度的方向与所述过滤浓缩器的外壳的中心轴线的方向一致，所述待浓缩浆料进料结构与所述已浓缩浆料出料结构分别设置在所述过滤浓缩器的外壳上位于所述中心轴线方向上的两端的部位并分别与原液腔两端导通。并且，若以与所述中心轴线垂直并与所述滤芯的过滤面相交的平面为横截面，则：在所述横截面上，所述原液腔以第一图形的形式分布，所述第一图形为封闭图形，所述封闭图形的形状为圆形、环形或多边形，所述横截面上位于所述过滤浓缩器的外壳内且除所述第一图形外的区域基本上由第二图形和第三图形组成，所述清液腔以所述第二图形的形式分布，所述滤芯的过滤材料以所述第三图形的形式分布，所述中心轴线在所述横截面上的对应中心点靠近或位于所述第一图形、第二图形或第三图形中。In short, the filter concentrator of the third co-precipitation reaction system can be summarized as follows: in the filter concentrator, the filter element has a first edge and a second edge that are perpendicular to each other, and the area of the filter surface of the filter element is basically determined by the third edge. The length of one edge is determined by the product of the length of the second edge, the direction of the length of the first edge is consistent with the direction of the central axis of the housing of the filter concentrator, and the feed structure of the slurry to be concentrated is consistent with the direction of the casing of the filter concentrator. The concentrated slurry discharging structures are respectively disposed on the shell of the filter concentrator at both ends in the direction of the central axis and are respectively connected to both ends of the original liquid chamber. Moreover, if a plane perpendicular to the central axis and intersecting the filtering surface of the filter element is taken as a cross section, then: on the cross section, the original liquid chamber is distributed in the form of a first figure, and the first The figure is a closed figure, the shape of the closed figure is a circle, an annular or a polygon, and the cross-section is located in the shell of the filter concentrator and the area except the first figure is basically composed of the second figure and Composed of a third graphic, the clear liquid chamber is distributed in the form of the second graphic, the filter material of the filter element is distributed in the form of the third graphic, and the corresponding center point of the central axis on the cross section Close to or located in the first figure, second figure or third figure.
第四共沉淀反应系统The fourth co-precipitation reaction system
针对目前出清系统需现场临时安装，施工强度大、时间长，影响项目施工进度的问题，对出清系统进行了重新设计，提出一种整体可移动式出清模块。采用该整体可移动式出清模块的出清系统可用于上述任意共沉淀反应系统中。当出清系统用于不同共沉淀反应系统时，出清系统的构成可能有所差异，但总体结构类似。In view of the problems that the current clearing system needs to be temporarily installed on site, and the construction intensity is high and takes a long time, which affects the project construction progress, the clearing system was redesigned and an overall movable clearing module was proposed. The purge system using this integral movable purge module can be used in any of the above co-precipitation reaction systems. When the clearing system is used in different co-precipitation reaction systems, the composition of the clearing system may be different, but the overall structure is similar.
图7为本申请实施例一种共沉淀反应系统中出清系统的三维结构图。图8为图7所示系统在另一角度下的三维结构图。图9为图7所示系统在另一角度下的三维结构图。图10为图7所示系统在另一角度下的三维结构图。图11为图10所示系统隐藏电气箱后的三维结构图。图12为图7所示系统的主示意图。图7-12所示的出清系统实际是针对上述第二共沉淀反应系统设计的。当出清系统用于不同共沉淀反应系统时，总体结构依然与图7-12所示类似，但根据需要可以做局部调整。Figure 7 is a three-dimensional structural diagram of the clearing system in a co-precipitation reaction system according to an embodiment of the present application. Figure 8 is a three-dimensional structural diagram of the system shown in Figure 7 from another angle. Figure 9 is a three-dimensional structural diagram of the system shown in Figure 7 from another angle. Figure 10 is a three-dimensional structural diagram of the system shown in Figure 7 from another angle. Figure 11 is a three-dimensional structural diagram of the system shown in Figure 10 after the electrical box is hidden. Figure 12 is a main schematic diagram of the system shown in Figure 7. The clearing system shown in Figure 7-12 is actually designed for the above-mentioned second co-precipitation reaction system. When the clearing system is used in different co-precipitation reaction systems, the overall structure is still similar to that shown in Figure 7-12, but local adjustments can be made as needed.
如图7-12所示，整体可移动式出清模块具体包含：框架式支座220、清液输送及滤芯反冲洗管道系统210、功能容器设备组230等部分。As shown in Figure 7-12, the overall movable cleaning module specifically includes: frame support 220, clear liquid transportation and filter element backwashing pipeline system 210, functional container equipment group 230 and other parts.
其中，所述框架式支座220包含支承底座221以及设置在所述支承底座221上的桥架222，所述支承底座221上位于所述桥架222的一侧形成管道类设施安装区223，所述桥架222中形成功能容器类设施安装区224。 The frame support 220 includes a support base 221 and a bridge 222 provided on the support base 221. A pipeline facility installation area 223 is formed on one side of the support base 221 on the bridge 222. A functional container facility installation area 224 is formed in the bridge 222 .
所述清液输送及滤芯反冲洗管道系统210安装在所述管道类设施安装区223，所述清液输送及滤芯反冲洗管道系统210包含与滤芯的组别一一对应的清液输送管211以及同样与所述滤芯的组别一一对应的反冲介质输送管212，所述清液输送管211的输出端通过一对一设置的控制阀213与清液输送总管215连接，所述清液输送管211的输入端连接有用于与对应滤芯的组别的清液出料结构连接的清液输入接口，所述反冲介质输送管212的输入端通过一对一设置的控制阀214与反冲介质输送总管216连接，所述反冲介质输送管212的输出端与一一对应的清液输送管211的旁路连接。The clear liquid transportation and filter element backwashing pipeline system 210 is installed in the pipeline facility installation area 223. The clear liquid transportation and filter element backwashing pipeline system 210 includes clear liquid transportation pipes 211 corresponding to the groups of filter elements. And the backflush medium conveying pipe 212 also corresponds to the group of the filter element one-to-one. The output end of the clear liquid conveying pipe 211 is connected to the clear liquid conveying main pipe 215 through a one-to-one control valve 213. The input end of the liquid delivery pipe 211 is connected to a clear liquid input interface for connecting to the clear liquid discharge structure of the corresponding filter element group. The input end of the backflush medium delivery pipe 212 is connected to the clear liquid delivery pipe 212 through a control valve 214 arranged one-to-one. The backflush medium transport main pipe 216 is connected, and the output end of the backflush medium transport pipe 212 is connected to the bypass of the clear liquid transport pipe 211 in one-to-one correspondence.
上述控制阀213、控制阀214可以采用气动阀。通过控制对应的控制阀213以及控制阀214的状态，可以控制特定组别的滤芯的工作状态(过滤或反冲再生)。The above control valves 213 and 214 can be pneumatic valves. By controlling the status of the corresponding control valve 213 and control valve 214, the working status (filtration or backflush regeneration) of a specific group of filter elements can be controlled.
所述功能容器设备组230架设在桥架222上并位于所述功能容器类设施安装区224中，所述功能容器设备组230包含反冲器231，所述反冲器231的外壳上分别设有反冲介质输入结构和反冲介质输出结构，所述反冲介质输出结构与所述反冲介质输送总管216连接。反冲介质既可以为反冲气体，也可以为反冲液体。The functional container equipment group 230 is erected on the bridge 222 and located in the functional container facility installation area 224. The functional container equipment group 230 includes a recoiler 231, and the outer shell of the recoiler 231 is respectively provided with A recoil medium input structure and a recoil medium output structure are connected to the recoil medium delivery main pipe 216 . The recoil medium can be either recoil gas or recoil liquid.
通常，所述滤芯的组别≥2，因此，所述清液输送及滤芯反冲洗管道系统210中的清液输送管211以反冲介质输送管212可以均沿水平横向间隔排列，以便清液输送及滤芯反冲洗管道系统210在管道类设施安装区223中布置。Usually, the group of the filter element is ≥ 2. Therefore, the clear liquid delivery pipe 211 and the backwash medium delivery pipe 212 in the clear liquid delivery and filter core backwashing pipeline system 210 can be arranged at horizontal and transverse intervals so that the clear liquid The conveying and filter backwash pipeline system 210 is arranged in the pipeline facility installation area 223.
由于所述清液输送及滤芯反冲洗管道系统210中的清液输送管211以反冲介质输送管212可以均沿水平横向间隔排列，因此，所述清液输送管211的中心轴线和与所述清液输送管211一一对应连接的反冲介质输送管212的中心轴线可位于同一竖直平面内。这样，就可以节省清液输送及滤芯反冲洗管道系统210整体的水平横向宽度。Since the clear liquid delivery pipes 211 and the backflush medium delivery pipes 212 in the clear liquid delivery and filter core backwashing pipeline system 210 can be arranged at horizontal and transverse intervals, the central axis of the clear liquid delivery pipe 211 and the The central axes of the recoil medium delivery pipes 212 connected to the clear liquid delivery pipes 211 in one-to-one correspondence may be located in the same vertical plane. In this way, the overall horizontal width of the clear liquid delivery and filter element backwashing pipeline system 210 can be saved.
由于所述清液输送及滤芯反冲洗管道系统210中的清液输送管211以反冲介质输送管212可以均沿水平横向间隔排列，为便于设置，所述清液输送总管215可具有清液输送总管水平横向延伸段，所述清液输送及滤芯反冲洗管道系统210中的清液输送管211的输出端通过一对一设置的控制阀213与清液输送总管水平横向延伸段连接。Since the clear liquid delivery pipes 211 and the backflush medium delivery pipes 212 in the clear liquid delivery and filter core backwashing pipeline system 210 can be arranged horizontally and transversely at intervals, the clear liquid delivery main pipe 215 can have clear liquid delivery pipes 215 to facilitate installation. The horizontal and transverse extension section of the main delivery pipe. The output end of the clear liquid delivery pipe 211 in the clear liquid delivery and filter element backwashing pipeline system 210 is connected to the horizontal and transverse extension section of the clear liquid delivery main pipe through a one-to-one set of control valves 213.
同理，所述反冲介质输送总管216可具有反冲介质输送总管水平横向延伸段，所述清液输送及滤芯反冲洗管道系统210中的反冲介质输送管212的输出端通过一对一设置的控制阀214与反冲介质输送总管水平横向延伸段连接。Similarly, the backflush medium transport main pipe 216 may have a horizontal and transverse extension section of the backflush medium transport main pipe, and the output end of the backflush medium transport pipe 212 in the clear liquid transport and filter element backwash pipeline system 210 passes through a one-to-one The provided control valve 214 is connected to the horizontal and transverse extension section of the recoil medium delivery main pipe.
在此基础上，所述反冲介质输送总管水平横向延伸段可位于所述清液输送总管水平横向延伸段的上方(如图8-9所示)，并且，所述反冲介质输送管212位于一一对应的清液输送管211的上方。这样既可以节省空间，方便管道布置，同时又可利用反冲介质输送管212对清液输送管211施加向上的力，便于对清液输送管211的定位。On this basis, the horizontal transverse extension section of the backflush medium transport main pipe can be located above the horizontal transverse extension section of the clear liquid transport main pipe (as shown in Figures 8-9), and the backflush medium transport pipe 212 Located above the one-to-one corresponding clear liquid delivery pipe 211. In this way, space can be saved and pipeline layout is facilitated. At the same time, the recoil medium transport pipe 212 can be used to exert an upward force on the clear liquid transport pipe 211 to facilitate the positioning of the clear liquid transport pipe 211.
这样，只需在所述支承底座221上安装结构简单的清液输送管安装定位装置217(这里的清液输送管安装定位装置217采用了管夹)，将所述清液输送管211与所述清液输送管安装定位装置217相连接，就可以对整个清液输送及滤芯反冲洗管道系统210进行支撑固定。In this way, it is only necessary to install a simple structure of the clear liquid delivery pipe installation and positioning device 217 on the support base 221 (the clear liquid delivery pipe installation and positioning device 217 here uses a pipe clamp), and connect the clear liquid delivery pipe 211 to the required positioning device. The clear liquid delivery pipe is connected with the installation positioning device 217, so that the entire clear liquid delivery and filter element backwashing pipeline system 210 can be supported and fixed.
在上述整体可移动式出清模块结构基础上，本申请还对整体可移动式出清模块进行了以下方面的改进，这些改进可以整体的(组合的)或者部分的(单独的)应用于整体可移动式出清模块上从而实现特定功能或解决特定问题。Based on the above-mentioned structure of the overall movable cleaning module, this application also makes the following improvements to the overall movable cleaning module. These improvements can be applied to the whole (combined) or partially (individual). The removable cleaning module can be used to implement specific functions or solve specific problems.
第一方面的改进First improvement
如图7-12所示，清液输送管211的输入端安装有管道视镜218，管道视镜218上连接有用于与对应滤芯的组别的清液出料结构连接的清液输入接口。As shown in Figure 7-12, a pipe sight glass 218 is installed at the input end of the clear liquid delivery pipe 211, and the pipe sight glass 218 is connected to a clear liquid input interface for connecting to the clear liquid discharge structure of the corresponding filter element group.
具体的，所述清液输送管211的输入端具有竖直段，所述管道视镜218采用立式管道视镜并安装在所述竖直段上，所述清液输入接口为所述立式管道视镜的上端口。Specifically, the input end of the clear liquid transport pipe 211 has a vertical section, the pipe sight glass 218 adopts a vertical pipe sight glass and is installed on the vertical section, and the clear liquid input interface is the vertical pipe sight glass. The upper port of the borescope.
在清液输送管211的输入端安装管道视镜218后，可通过管道视镜218观察清液输送管211中清液的浑浊度，从而判断该清液输送管211所对应的组别的滤芯是否发生穿滤，若发生穿滤，可关闭清液输送管211上的控制阀213。After installing the pipe sight glass 218 at the input end of the clear liquid delivery pipe 211, the turbidity of the clear liquid in the clear liquid delivery pipe 211 can be observed through the pipe sight glass 218, thereby determining the filter element of the group corresponding to the clear liquid delivery pipe 211. Whether filtering occurs, if filtering occurs, the control valve 213 on the clear liquid delivery pipe 211 can be closed.
将管道视镜218安装在清液输送管211的输入端，不仅能够按照滤芯的组别来判断各组滤芯是否发生穿滤，降低排查难度，同时，由于管道视镜218靠近反冲器231，这样，可通过近距离反冲对管道视镜218进行冲洗，保证管道视镜218的能见度。Installing the pipe sight glass 218 at the input end of the clear liquid delivery pipe 211 can not only determine whether filtering of each group of filter elements has occurred according to the group of filter elements, reducing the difficulty of troubleshooting, but also, because the pipe sight glass 218 is close to the backflush 231, In this way, the pipe sight glass 218 can be flushed through close-range recoil to ensure the visibility of the pipe sight glass 218 .
当清液输送管211的输入端具有竖直段，所述管道视镜218采用立式管道视镜并安装在所述竖直段上时，不仅方便观察，同时能够有效避免穿滤后管道视镜218发生堵塞。When the input end of the clear liquid transport pipe 211 has a vertical section, and the pipe sight glass 218 adopts a vertical pipe sight glass and is installed on the vertical section, it is not only convenient for observation, but also can effectively avoid the pipe sight after filtering. Mirror 218 is clogged.
第二方面的改进Improvements in the second aspect
如图7-12所示，支承底座221上位于所述桥架222的一侧形成管道类设施安装区223而另一侧形成泵类设备安装区225，所述泵类设备安装区225与所述桥架222之间还预留有泵类设备维修操作区226。As shown in Figures 7-12, one side of the support base 221 located on the bridge 222 forms a pipeline facility installation area 223 and the other side forms a pump equipment installation area 225. The pump equipment installation area 225 and the A pump equipment maintenance operation area 226 is also reserved between the bridges 222 .
此外，出清系统还包括泵组240，所述泵组240安装在所述泵类设备安装区225并包含沿水平横向间隔排列的正用泵241和备用泵(图中未示出)，所述正用泵241与所述备用泵之间是以一个与水平纵向方向同向设置的铅锤面为对称面对称设置的，所述正用泵241与所述备用泵相互并联并分别通过阀门可选择地接入所述清液输送总管215而构成所述清液输送总管的一部分。In addition, the cleaning system also includes a pump set 240. The pump set 240 is installed in the pump equipment installation area 225 and includes an active pump 241 and a backup pump (not shown in the figure) arranged at horizontal and transverse intervals. The active pump 241 and the standby pump are symmetrically arranged with a plumb bob plane disposed in the same direction as the horizontal longitudinal direction as the plane of symmetry. The active pump 241 and the standby pump are connected in parallel with each other and pass through respectively. A valve is optionally connected to the clear liquid delivery manifold 215 to form part of the clear liquid delivery manifold.
泵组240包含沿水平横向间隔排列的正用泵241和备用泵，即采用冗余设计，确保泵组240运行的稳定性。在泵类设备安装区225与所述桥架222之间巧妙预留了泵类设备维修操作区226，方便对正用泵241和/或备用泵的现场检修。此外，正用泵241与备用泵之间采用对称设计，这样既能够提高整体可移动式出清模块重量分布均匀性，减小可移动式出清模块运行振动，同时在正用泵241与备用泵之间进行切换时 影响更小。The pump set 240 includes active pumps 241 and backup pumps arranged at intervals along the horizontal direction, that is, a redundant design is adopted to ensure the stability of the operation of the pump set 240. A pump equipment maintenance operation area 226 is cleverly reserved between the pump equipment installation area 225 and the bridge 222 to facilitate on-site maintenance of the main pump 241 and/or the backup pump. In addition, the symmetrical design is adopted between the active pump 241 and the backup pump, which can not only improve the uniformity of the weight distribution of the overall movable cleaning module, reduce the operating vibration of the movable cleaning module, but also ensure the balance between the active pump 241 and the backup pump. When switching between pumps The impact is smaller.
上述第二方面的改进应用于第一共沉淀反应系统、第二共沉淀反应系统和第三共沉淀反应系统意义是不同的。The improvement in the second aspect mentioned above has different meanings when applied to the first co-precipitation reaction system, the second co-precipitation reaction system and the third co-precipitation reaction system.
当应用于第一共沉淀反应系统或第二共沉淀反应系统时，由于第一共沉淀反应系统或第二共沉淀反应系统通常在反应釜与过滤浓缩器之间安装进料泵，这时，通过上述第二方面的改进，正用泵241和备用泵可以作为出清泵，当需要将清液输送总管215的输出口抬高时(后续将会详细说明)，防止清液倒流。When applied to the first co-precipitation reaction system or the second co-precipitation reaction system, since the first co-precipitation reaction system or the second co-precipitation reaction system usually installs a feed pump between the reaction kettle and the filter concentrator, at this time, Through the above-mentioned second aspect of improvement, the active pump 241 and the backup pump can be used as clearing pumps to prevent the clear liquid from flowing back when the output port of the clear liquid delivery main pipe 215 needs to be raised (which will be described in detail later).
当应用于第二共沉淀反应系统时，由于第一共沉淀反应系统通常需要采用“负压出清”，即需要在滤芯清液输出流路的下游设置泵来进行抽吸，此时，正用泵241和备用泵实际上为共沉淀反应与过滤浓缩一体化设备的过滤浓缩运行提供了过滤压差。这时，将泵组240集成在整体可移动式出清模块上变得更为重要。这种情况下，正用泵241和备用泵优选采用软管泵。When applied to the second co-precipitation reaction system, since the first co-precipitation reaction system usually needs to use "negative pressure purification", that is, a pump needs to be installed downstream of the filter element clear liquid output flow path for suction. At this time, the positive The pump 241 and the backup pump actually provide a filtration pressure difference for the filtration and concentration operation of the co-precipitation reaction and filtration concentration integrated equipment. At this time, it becomes more important to integrate the pump set 240 on the overall removable cleaning module. In this case, it is preferable to use hose pumps as the active pump 241 and the backup pump.
此外，如图7-12所示，所述框架式支座221上位于所述泵类设备安装区225的两侧中与所述泵类设备维修操作区226相对的那一侧形成电气箱安装区；所述整体可移动式出清模块还包括电气箱250，所述电气箱250安装在所述电气箱安装区。In addition, as shown in Figures 7-12, the frame support 221 is located on both sides of the pump equipment installation area 225 on the side opposite to the pump equipment maintenance operation area 226 to form an electrical box installation. area; the integral movable cleaning module also includes an electrical box 250, and the electrical box 250 is installed in the electrical box installation area.
此外，所述清液输送总管215包含位于所述正用泵与所述备用泵下游的抬升段215A；所述抬升段215A上分别设有所述清液输送总管的输出口、清洗液输入口以及清洗液输出口；所述清洗液输出口通过清洗液输送管215B连接至所述反冲介质输送总管，所述清洗液输送管上设有控制阀215C；所述桥架222上朝向所述泵类设备安装区225的一侧可以设置L形悬臂222A，所述L形悬臂222A的竖直段可分别对所述清液输送总管215的输出口所在的横管段以及所述清洗液输入口所在的横管段进行连接支撑。In addition, the clear liquid transport main pipe 215 includes a lifting section 215A located downstream of the active pump and the backup pump; the lifting section 215A is respectively provided with an output port and a cleaning liquid input port of the clear liquid transport main pipe. and a cleaning fluid output port; the cleaning fluid output port is connected to the backflush medium delivery main pipe through a cleaning fluid delivery pipe 215B, and a control valve 215C is provided on the cleaning fluid delivery pipe; the bridge 222 faces the pump An L-shaped cantilever 222A can be provided on one side of the equipment installation area 225. The vertical section of the L-shaped cantilever 222A can respectively support the horizontal pipe section where the output port of the clear liquid delivery main pipe 215 is located and where the cleaning liquid input port is located. The horizontal pipe sections are connected and supported.
此外，所述功能容器设备组230中用于与所述整体可移动式出清模块外部连接的流体输送接口所述泵组240中用于与所述整体可移动式出清模块外部连接的流体输送接口统一朝向同一水平横向方向且不受到所述整体可移动式出清模块中结构的遮挡。In addition, the fluid delivery interface in the functional container equipment group 230 for external connection with the integrally movable purge module and the fluid delivery interface in the pump set 240 for external connection with the integrally movable purge module are provided. The conveying interfaces are uniformly oriented in the same horizontal direction and are not blocked by the structure in the integral movable cleaning module.
第三方面的改进Improvements in the third area
如图7-12所示，在第二方面的改进的基础上，所述功能容器设备组230还包含换热冷却器232，所述换热冷却器232中设有通过换热壁彼此分隔的清液通道和冷却介质通道，所述换热冷却器232的外壳上设有分别与所述清液通道的两端连接的清液入口和清液出口，所述换热冷却器232的外壳上还设有分别与所述冷却介质通道的两端连接的冷却介质入口和冷却介质出口，所述清液入口和所述清液出口串联在所述清液输送总管215上以使得所述清液通道构成所述清液输送总管215的一部分。所述换热冷却器232可以采用水作为冷却介质。As shown in Figures 7-12, based on the improvement of the second aspect, the functional container equipment group 230 also includes a heat exchange cooler 232. The heat exchange cooler 232 is provided with heat exchangers separated from each other by heat exchange walls. A clear liquid channel and a cooling medium channel. The outer shell of the heat exchange cooler 232 is provided with a clear liquid inlet and a clear liquid outlet respectively connected to both ends of the clear liquid channel. The outer shell of the heat exchange cooler 232 is There is also a cooling medium inlet and a cooling medium outlet respectively connected to both ends of the cooling medium channel. The clear liquid inlet and the clear liquid outlet are connected in series on the clear liquid delivery main pipe 215 so that the clear liquid The channel forms part of the clear liquid delivery manifold 215 . The heat exchange cooler 232 may use water as a cooling medium.
通过换热冷却器232能够对清液进行降温，破坏三元前驱体颗粒的生长条件，从而避免清液中进一步生成三元前驱体颗粒，引起清液输送总管215尤其是正用泵241和备用泵的堵塞。另外，当正用泵241和备用泵采用软管泵时，通过换热冷却器232能够对清液进行降温后可以保护软管泵中的软管，延长其使用寿命。The heat exchange cooler 232 can cool down the clear liquid, destroying the growth conditions of the ternary precursor particles, thereby avoiding further generation of ternary precursor particles in the clear liquid, causing the clear liquid delivery main pipe 215, especially the active pump 241 and the backup pump to of blockage. In addition, when the active pump 241 and the backup pump adopt hose pumps, the heat exchange cooler 232 can cool down the clear liquid to protect the hoses in the hose pump and extend its service life.
进一步的，所述换热冷却器232采用立式容器，所述清液入口位于所述换热冷却器的上端，所述清液出口位于所述换热冷却器232的下端，所述清液输送总管215上位于所述清液出口与所述正用泵241和备用泵之间的管段通过泵类设备维修操作区226的底部将所述清液出口与正用泵241和备用泵连接。Further, the heat exchange cooler 232 adopts a vertical container, the clear liquid inlet is located at the upper end of the heat exchange cooler, and the clear liquid outlet is located at the lower end of the heat exchange cooler 232. The pipe section on the main delivery pipe 215 located between the clear liquid outlet and the regular pump 241 and the backup pump connects the clear liquid outlet to the regular pump 241 and the backup pump through the bottom of the pump equipment maintenance operation area 226 .
换热冷却器232采用立式容器后，节省占地，方便在桥架222上安装。在此基础上，将清液入口布置在所述换热冷却器232的上端，清液出口布置在所述换热冷却器232的下端，所述清液输送总管215上位于所述清液出口与正用泵241和备用泵之间的管段通过泵类设备维修操作区226的底部将所述清液出口与正用泵241和备用泵连接，可以为泵类设备维修操作区226留出尽量多的空间，方便操作。After the heat exchange cooler 232 adopts a vertical container, it saves space and facilitates installation on the bridge 222. On this basis, the clear liquid inlet is arranged at the upper end of the heat exchange cooler 232, the clear liquid outlet is arranged at the lower end of the heat exchange cooler 232, and the clear liquid delivery main pipe 215 is located at the clear liquid outlet. The pipe section between the active pump 241 and the standby pump connects the clear liquid outlet to the active pump 241 and the standby pump through the bottom of the pump equipment maintenance operation area 226, leaving as much space as possible for the pump equipment maintenance operation area 226. Plenty of space for easy operation.
进一步的，所述清液通道为一个立式管状结构，所述清液入口位于所述换热冷却器232的顶部并与立式管状结构的上端口连通，所述清液出口位于所述换热冷却器232的底部并与立式管状结构的下端口连通；并且，所述冷却介质通道为一个位于所述立式管状结构与所述换热冷却器232外壳之间的立式环形管道，所述冷却介质入口和冷却介质出口分别位于所述立式环形管道的上下端侧部。Further, the clear liquid channel is a vertical tubular structure, the clear liquid inlet is located at the top of the heat exchange cooler 232 and communicates with the upper port of the vertical tubular structure, and the clear liquid outlet is located at the heat exchanger cooler 232. The bottom of the heat cooler 232 is connected to the lower port of the vertical tubular structure; and the cooling medium channel is a vertical annular pipe located between the vertical tubular structure and the outer shell of the heat exchange cooler 232, The cooling medium inlet and the cooling medium outlet are respectively located at the upper and lower end sides of the vertical annular pipe.
此外，所述清液输送总管215上位于所述清液出口与正用泵241和备用泵之间的管段上靠近所述清液出口处连接有废水排放支路219，所述废水排放支路219处于所述整体可移动式出清模块中全部液体流路的高度最低位置，所述废水排放支路219上设有排放阀。In addition, a wastewater discharge branch 219 is connected to the pipe section of the clear liquid delivery main pipe 215 between the clear liquid outlet and the active pump 241 and the backup pump close to the clear liquid outlet. The wastewater discharge branch 219 is at the lowest position of all liquid flow paths in the integrally movable cleaning module, and the wastewater discharge branch 219 is provided with a discharge valve.
第四方面的改进Improvements in the fourth aspect
如图7-12所示，所述反冲器231的反冲介质输入结构包含反冲液输入结构231A和压缩气体输入结构231B，且所述反冲器231的外壳上还设有反冲液溢流口231C，所述反冲液溢流口231C通过反冲液溢流管231D连接至所述清液输送总管215的输出口，则所述清液输送总管215的输出口整体高于所述反冲液溢流口231C，且所述反冲液溢流管231D上设有上升段231E。此外，所述反冲液溢流管231D上还可以设置控制阀。As shown in Figures 7-12, the recoil medium input structure of the recoil device 231 includes a recoil fluid input structure 231A and a compressed gas input structure 231B, and the recoil fluid input structure is also provided on the outer shell of the recoil device 231. Overflow port 231C, the backwash liquid overflow port 231C is connected to the output port of the clear liquid delivery main pipe 215 through the backwash liquid overflow pipe 231D, then the overall output port of the clear liquid delivery main pipe 215 is higher than the The recoil overflow port 231C is provided, and the recoil overflow pipe 231D is provided with an ascending section 231E. In addition, a control valve may be provided on the recoil overflow pipe 231D.
通常，所述清液输送总管215包含位于该清液输送总管下游的抬升段215A，所述清液输送总管215的输出口设置在所述抬升段215A上。Generally, the clear liquid delivery main pipe 215 includes an elevated section 215A located downstream of the clear liquid delivery main pipe, and the output port of the clear liquid delivery main pipe 215 is disposed on the elevated section 215A.
以往，反冲器231那么采用气体反冲，要么采用液体反冲，因此，反冲介质输入结构要么就是反冲液输入结构231A要么就是压缩气体输入结构231B。而在这里，反冲器231的反冲介质输入结构同时包含反冲液输入结构231A和压缩气体输入结构231B，这样，就可以在气体反冲和液体反冲之间进行选择，或者将气体反冲和液体反冲进行结合。In the past, the recoiler 231 used gas recoil or liquid recoil. Therefore, the recoil medium input structure was either the recoil liquid input structure 231A or the compressed gas input structure 231B. Here, the recoil medium input structure of the recoiler 231 includes both the recoil liquid input structure 231A and the compressed gas input structure 231B. In this way, one can choose between gas recoil and liquid recoil, or the gas recoil can be reversed. Flush and liquid backflush are combined.
基于此，本申请还可以采用这种一种创新的反冲方式，即分别通过反冲液输入结构231A和压缩气体输入结构231B向反冲器231注入反冲液和压缩气体，这样，反冲器231的内部的下方为反冲液而上方为 压缩气体，从而可利用压缩气体迅速推动反冲液反向回流滤芯，常规的液体反冲是利用隔膜泵提供反冲动力的，这种方式的液体反冲效果有限。但采用上述创新的反冲方式后，反冲力更大。Based on this, this application can also adopt this innovative backflush method, that is, inject the backflush liquid and compressed gas into the backflush 231 through the backflush liquid input structure 231A and the compressed gas input structure 231B respectively. In this way, the backflush The lower part of the inside of the container 231 is the recoil fluid and the upper part is the The compressed gas can be used to quickly push the recoil liquid back to the filter element in the reverse direction. Conventional liquid recoil uses a diaphragm pump to provide recoil force. The effect of liquid recoil in this way is limited. However, after adopting the above-mentioned innovative recoil method, the recoil force is even greater.
另外，通过控制反冲器231中反冲液的体积，可以按照每次反冲对应的滤芯的原液腔的容积之和，使得反冲液的体积刚好与该容积之和大致相当(比如将反冲液的体积控制在与该容积之和的1-1.2倍)，这样，既起到了较好的反冲效果，减小作用不大的反冲液量，从而更节省能耗。In addition, by controlling the volume of the backwash liquid in the backflush 231, the volume of the backwash liquid can be roughly equal to the sum of the volumes of the raw liquid chambers of the filter elements corresponding to each backflush (for example, the backwash liquid can be The volume of the flushing fluid is controlled to be 1-1.2 times the sum of the volumes), which not only achieves a better recoil effect, but also reduces the amount of recoil fluid that has little effect, thus saving energy.
因此，为了更好控制控制反冲器231中反冲液的体积，在所述反冲器231的外壳上设置了反冲液溢流口231C，从而控制制反冲器231中反冲液的液位高度，进而控制反冲器231中反冲液的体积。为方便设置，反冲液溢流口231C通过反冲液溢流管231D连接至所述清液输送总管215的输出口。Therefore, in order to better control the volume of the recoil fluid in the recoil device 231, a recoil fluid overflow port 231C is provided on the outer shell of the recoil device 231, thereby controlling the volume of the recoil fluid in the recoil device 231. The liquid level height thereby controls the volume of backflush fluid in the backflush 231. For convenience of setting, the backflush overflow port 231C is connected to the output port of the clear liquid delivery main pipe 215 through the backflush overflow pipe 231D.
当在所述反冲器231的外壳上设置了反冲液溢流口231C并且反冲液溢流口231C通过反冲液溢流管231D连接至所述清液输送总管215的输出口后，为了避免压缩气体从该反冲液溢流口231C和反冲液溢流管231D泄漏，于是要求所述清液输送总管215的输出口整体高于所述反冲液溢流口231C，并且所述反冲液溢流管231D上设有上升段231E，这样可在反冲液溢流管231D内形成液封，避免压缩气体泄漏。When the recoil overflow port 231C is provided on the shell of the recoil device 231 and the recoil overflow port 231C is connected to the output port of the clear liquid delivery main pipe 215 through the recoil overflow pipe 231D, In order to prevent the compressed gas from leaking from the recoil overflow port 231C and the recoil overflow pipe 231D, the output port of the clear liquid delivery main pipe 215 is required to be higher than the recoil overflow port 231C. The recoil overflow pipe 231D is provided with an ascending section 231E, so that a liquid seal can be formed in the recoil overflow pipe 231D to avoid leakage of compressed gas.
第五方面的改进Improvements in the fifth area
如图7-12所示，所述功能容器设备组还包含汽液分离器233，所述汽液分离器233的外壳上分别设有汽液混合相输入结构233A、被分离液相输出结构233B和被分离气相输出结构233C。As shown in Figures 7-12, the functional container equipment group also includes a vapor-liquid separator 233. The casing of the vapor-liquid separator 233 is respectively provided with a vapor-liquid mixed phase input structure 233A and a separated liquid phase output structure 233B. and separated gas phase output structure 233C.
当上述第五方面的改进应用于第三共沉淀反应系统时，汽液分离器233与汽液分离器103可以是同一设备，这时，所述所述汽液分离器233的汽液混合相输入结构233A、被分离液相输出结构233B和被分离气相输出结构233C可按照图1所示的方式与对应的管道连接。When the above fifth improvement is applied to the third co-precipitation reaction system, the vapor-liquid separator 233 and the vapor-liquid separator 103 may be the same device. In this case, the vapor-liquid mixed phase of the vapor-liquid separator 233 The input structure 233A, the separated liquid phase output structure 233B and the separated gas phase output structure 233C can be connected to corresponding pipelines in the manner shown in Figure 1 .
当上述第五方面的改进应用于第一共沉淀反应系统或第二共沉淀反应系统时，汽液分离器233的汽液混合相输入结构233A可以与所述反冲器231的压缩气体输入结构231B之间通过连通管连通，所述连通管通过送气旁路231D与压缩气源连接，所述连通管上位于所述汽液混合相输入结构233A与所述送气旁路231D之间串联有控制阀233D，所述送气旁路231D构成所述压缩气体输入结构231B的一部分。When the improvement of the fifth aspect mentioned above is applied to the first co-precipitation reaction system or the second co-precipitation reaction system, the vapor-liquid mixed phase input structure 233A of the vapor-liquid separator 233 can be combined with the compressed gas input structure of the backflush 231 231B are connected through a connecting pipe, and the connecting pipe is connected to the compressed air source through the air supply bypass 231D. The connecting pipe is connected in series between the vapor-liquid mixed phase input structure 233A and the air supply bypass 231D. Valve 233D, the gas supply bypass 231D forms part of the compressed gas input structure 231B.
这样，当需要释放反冲器231中的气压时，可以打开控制阀233D，反冲器231中的汽液两相物进入汽液分离器103进行汽液分离。In this way, when the air pressure in the backflush 231 needs to be released, the control valve 233D can be opened, and the vapor-liquid two-phase material in the backflush 231 enters the vapor-liquid separator 103 for vapor-liquid separation.
优选的，所述汽液混合相输入结构233A包含与所述汽液分离器233侧壁相切的汽液混合相输入管，所述连通管与所述汽液混合相输入管同轴设置。Preferably, the vapor-liquid mixed phase input structure 233A includes a vapor-liquid mixed phase input pipe that is tangent to the side wall of the vapor-liquid separator 233, and the connecting pipe is coaxially arranged with the vapor-liquid mixed phase input pipe.
此外，所述被分离液相输出结构233B与废水排放支路219连接。In addition, the separated liquid phase output structure 233B is connected to the wastewater discharge branch 219 .
以上对本申请的有关内容进行了说明。本领域普通技术人员在基于这些说明的情况下将能够实现本申请。基于本说明书的上述内容，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应当属于专利保护的范围。 The relevant contents of this application have been explained above. A person of ordinary skill in the art will be able to implement the present application based on these descriptions. Based on the above contents of this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of patent protection.

Claims (10)

  1. 一种共沉淀反应系统，其特征在于，包括：A co-precipitation reaction system, characterized by including:
    共沉淀反应单元，所述共沉淀反应单元包含反应釜，所述反应釜具有外壳和内腔，所述反应釜的外壳上分别设有原料进料结构、待浓缩浆料出料结构和已浓缩浆料回流结构，所述原料进料结构、待浓缩浆料出料结构和已浓缩浆料回流结构分别与所述反应釜的内腔连通，所述反应釜的内腔中设有搅拌结构；Co-precipitation reaction unit. The co-precipitation reaction unit includes a reaction kettle. The reaction kettle has an outer shell and an inner cavity. The outer shell of the reaction kettle is provided with a raw material feeding structure, a slurry discharge structure to be concentrated and a concentrated slurry discharging structure. Slurry reflux structure, the raw material feed structure, the slurry discharge structure to be concentrated and the concentrated slurry reflux structure are respectively connected with the inner cavity of the reaction kettle, and a stirring structure is provided in the inner cavity of the reaction kettle;
    过滤浓缩单元，所述过滤浓缩单元包含过滤浓缩器，所述过滤浓缩器具有外壳和滤芯，所述滤芯在所述过滤浓缩器的外壳中形成原液腔和清液腔，所述过滤浓缩器的外壳上分别设有待浓缩浆料进料结构、已浓缩浆料出料结构和清液出料结构，所述待浓缩浆料进料结构和所述已浓缩浆料出料结构分别与所述原液腔连通，所述清液出料结构与所述清液腔连通；A filtration concentration unit, the filtration concentration unit includes a filtration concentrator, the filtration concentrator has a shell and a filter core, the filter core forms a raw liquid cavity and a clear liquid cavity in the shell of the filter concentrator, and the filter concentrator has The shell is respectively provided with a feed structure for the slurry to be concentrated, a discharge structure for the concentrated slurry and a clear liquid discharge structure. The feed structure for the slurry to be concentrated and the discharge structure for the concentrated slurry are respectively connected with the original liquid. The cavity is connected, and the clear liquid discharge structure is connected with the clear liquid cavity;
    其中，所述待浓缩浆料出料结构用于与所述待浓缩浆料进料结构连接，所述已浓缩浆料出料结构用于与所述已浓缩浆料回流结构连接，所述原料进料结构用于与共沉淀反应原料供给设备连接，所述清液出料结构用于与出清系统连接；Wherein, the discharge structure of the slurry to be concentrated is used to connect with the feed structure of the slurry to be concentrated, the discharge structure of the concentrated slurry is used to connect with the reflux structure of the concentrated slurry, and the raw material The feeding structure is used to connect with the co-precipitation reaction raw material supply equipment, and the clear liquid discharge structure is used to connect with the clearing system;
    在所述过滤浓缩器中，所述滤芯具有相互垂直的第一边缘与第二边缘，所述滤芯的过滤面的面积基本由所述第一边缘的长度与所述第二边缘的长度的乘积确定，所述第一边缘的长度的方向与所述过滤浓缩器的外壳的中心轴线的方向一致，所述待浓缩浆料进料结构与所述已浓缩浆料出料结构分别设置在所述过滤浓缩器的外壳上位于所述中心轴线方向上的两端的部位并分别与原液腔两端导通；In the filter concentrator, the filter element has a first edge and a second edge that are perpendicular to each other, and the area of the filter surface of the filter element is basically determined by the product of the length of the first edge and the length of the second edge. It is determined that the direction of the length of the first edge is consistent with the direction of the central axis of the housing of the filter concentrator, and the feed structure of the slurry to be concentrated and the discharge structure of the concentrated slurry are respectively arranged on the The parts of the shell of the filter concentrator located at both ends in the direction of the central axis are connected to both ends of the original liquid chamber respectively;
    若以与所述中心轴线垂直并与所述滤芯的过滤面相交的平面为横截面，则：在所述横截面上，所述原液腔以第一图形的形式分布，所述第一图形为封闭图形，所述封闭图形的形状为圆形、环形或多边形，所述横截面上位于所述过滤浓缩器的外壳内且除所述第一图形外的区域基本上由第二图形和第三图形组成，所述清液腔以所述第二图形的形式分布，所述滤芯的过滤材料以所述第三图形的形式分布，并且，所述中心轴线在所述横截面上的对应中心点靠近或位于所述第一图形、第二图形或第三图形中。If a plane perpendicular to the central axis and intersecting the filter surface of the filter element is taken as a cross section, then: on the cross section, the original liquid chamber is distributed in the form of a first graphic, and the first graphic is A closed figure, the shape of the closed figure is a circle, annular or a polygon, the cross section is located in the shell of the filter concentrator and the area except the first figure is basically composed of a second figure and a third figure. Graphic composition, the clear liquid chamber is distributed in the form of the second graphic, the filter material of the filter element is distributed in the form of the third graphic, and the corresponding center point of the central axis on the cross section Close to or located in the first figure, second figure or third figure.
  2. 如权利要求1所述的共沉淀反应系统，其特征在于：所述过滤浓缩单元包含N个过滤浓缩器组件，所述N为≥1的整数，所述过滤浓缩器组件由多个过滤浓缩器连接而成，所述过滤浓缩器为管式过滤浓缩器；The co-precipitation reaction system of claim 1, wherein the filtration and concentration unit includes N filter concentrator components, where N is an integer ≥1, and the filter concentrator component is composed of a plurality of filter concentrators. Connected, the filter concentrator is a tubular filter concentrator;
    所述管式过滤浓缩器具有管状的外壳以及形状大小与所述外壳中的管道相适配的滤芯，所述滤芯中设有轴向通道，所述轴向通道构成所述原液腔或所述清液腔；The tubular filter concentrator has a tubular shell and a filter element whose shape and size are adapted to the pipes in the shell. An axial channel is provided in the filter element, and the axial channel constitutes the original liquid chamber or the clear liquid cavity;
    当所述轴向通道构成所述原液腔时，所述外壳中的管道与所述滤芯之间形成所述清液腔，当所述轴向通道构成所述清液腔时，所述外壳中的管道与所述滤芯之间形成所述原液腔；When the axial channel constitutes the original liquid cavity, the clear liquid cavity is formed between the pipe in the housing and the filter element. When the axial channel constitutes the clear liquid cavity, the clear liquid cavity in the housing is The original liquid cavity is formed between the pipeline and the filter element;
    所述过滤浓缩器组件中的管式过滤浓缩器的待浓缩浆料进料结构和已浓缩浆料出料结构依次首尾连接从而使这些管式过滤浓缩器的原液腔串联为一个流动通路，所述流动通路中为首的待浓缩浆料进料结构与所述待浓缩浆料出料结构连接，末尾的已浓缩浆料出料结构与所述已浓缩浆料回流结构连接。The feed structure of the slurry to be concentrated and the discharge structure of the concentrated slurry of the tubular filter concentrator in the filter concentrator assembly are connected end to end in order, so that the raw liquid chambers of these tubular filter concentrators are connected in series into one flow path, so The first feed structure of the slurry to be concentrated in the flow path is connected to the discharge structure of the slurry to be concentrated, and the discharge structure of the concentrated slurry at the end is connected to the reflux structure of the concentrated slurry.
  3. 如权利要求2所述的共沉淀反应系统，其特征在于：所述管式过滤浓缩器的外壳的壁上设有所述清液出料结构；The co-precipitation reaction system according to claim 2, characterized in that: the clear liquid discharge structure is provided on the wall of the shell of the tubular filter concentrator;
    并且/或者，所述过滤浓缩器组件中的管式过滤浓缩器平行间隔排列设置，相邻管式过滤浓缩器之间的待浓缩浆料进料结构与已浓缩浆料出料结构通过弯头连接从而使相邻管式过滤浓缩器之间的原液腔串联。And/or, the tubular filter concentrators in the filter concentrator assembly are arranged in parallel and spaced apart, and the feed structure of the slurry to be concentrated and the discharge structure of the concentrated slurry between adjacent tubular filter concentrators pass through elbows. Connect so that the raw liquid chambers between adjacent tubular filter concentrators are connected in series.
  4. 如权利要求3所述的共沉淀反应系统，其特征在于：所述过滤浓缩器组件中的弯头呈水平设置。The co-precipitation reaction system of claim 3, wherein the elbow in the filter concentrator assembly is arranged horizontally.
  5. 如权利要求4所述的共沉淀反应系统，其特征在于：所述过滤浓缩单元包含2个以上过滤浓缩器组件，所述2个以上过滤浓缩器组件上下排列。The co-precipitation reaction system of claim 4, wherein the filtration and concentration unit includes more than two filtering and concentrator assemblies, and the two or more filtering and concentrating assemblies are arranged one above the other.
  6. 如权利要求2所述的共沉淀反应系统，其特征在于：同一过滤浓缩器组件中不同管式过滤浓缩器的清液出料结构汇流在一起并形成一组清液出料结构，或者，不同过滤浓缩器组件中不同管式过滤浓缩器的清液出料结构汇流在一起并形成一组清液出料结构；所述一组清液出料结构对应一组滤芯，所述出清系统按照滤芯的组别对同一组别的滤芯同时进行反冲再生。The co-precipitation reaction system according to claim 2, characterized in that: the clear liquid discharge structures of different tubular filter concentrators in the same filter concentrator assembly are merged together to form a group of clear liquid discharge structures, or different The clear liquid discharge structures of different tubular filter concentrators in the filter concentrator assembly are brought together to form a set of clear liquid discharge structures; the set of clear liquid discharge structures corresponds to a set of filter elements, and the clear liquid discharge system is in accordance with The group of filter elements performs backflush regeneration on the filter elements of the same group at the same time.
  7. 如权利要求6所述的共沉淀反应系统，其特征在于：所述出清系统包含清液输送及滤芯反冲洗管道系统，所述清液输送及滤芯反冲洗管道系统包含与所述滤芯的组别一一对应的清液输送管以及同样与所述滤芯的组别一一对应的反冲介质输送管，所述清液输送管的输出端通过一对一设置的控制阀与清液输送总管连接，所述清液输送管的输入端连接有用于与对应滤芯的组别的清液出料结构连接的清液输入接口，所述反冲介质输送管的输入端通过一对一设置的控制阀与反冲介质输送总管连接，所述反冲介质输送管的输出端与一一对应的清液输送管的旁路连接；所述出清系统还包含反冲器，所述反冲器的外壳上分别设有反冲介质输入结构和反冲介质输出结构，所述反冲介质输出结构与所述反冲介质输送总管连接。The co-precipitation reaction system of claim 6, wherein the clearing system includes a clear liquid transportation and filter element backwashing pipeline system, and the clear liquid transportation and filter element backwashing pipeline system includes a combination with the filter element. There are one-to-one corresponding clear liquid delivery pipes and a one-to-one corresponding backflush medium delivery pipe to the filter element group. The output end of the clear liquid delivery pipe is connected to the clear liquid delivery main pipe through a one-to-one control valve. connection, the input end of the clear liquid conveying pipe is connected with a clear liquid input interface for connecting to the clear liquid discharge structure of the corresponding filter element group, and the input end of the backflush medium conveying pipe is controlled by a one-to-one setting The valve is connected to the backflush medium transportation main pipe, and the output end of the backflush medium transportation pipe is connected to the bypass of the one-to-one corresponding clear liquid transportation pipe; the cleaning system also includes a backflush, and the backflush The shell is respectively provided with a recoil medium input structure and a recoil medium output structure, and the recoil medium output structure is connected to the recoil medium transport main pipe.
  8. 如权利要求7所述的共沉淀反应系统，其特征在于：当不同过滤浓缩器组件中不同管式过滤浓缩器的清液出料结构汇流在一起并形成一组清液出料结构时，每一个过滤浓缩器组件与所述待浓缩浆料出料结构之间均设有流量调节装置，并且，每一个清液输送管上位于该清液输送管上的控制阀与清液输送总管之间均设有背压控制装置。The co-precipitation reaction system according to claim 7, characterized in that when the clear liquid discharge structures of different tubular filter concentrators in different filter concentrator assemblies are brought together and form a group of clear liquid discharge structures, each A flow regulating device is provided between a filter concentrator assembly and the discharge structure of the slurry to be concentrated, and between the control valve located on each clear liquid delivery pipe and the clear liquid delivery main pipe All are equipped with back pressure control devices.
  9. 如权利要求7所述的共沉淀反应系统，其特征在于：所述反冲器的反冲介质输入结构包含反冲液输入结构和压缩气体输入结构，且所述反冲器的外壳上还设有反冲液溢流口，所述反冲液溢流口通过反冲液溢流管连接至所述清液输送总管的输出口，则所述清液输送总管的输出口整体高于所述反冲液溢流口，且所述反冲液溢流管上设有上升段。The co-precipitation reaction system according to claim 7, characterized in that: the backflush medium input structure of the backflush includes a backflush liquid input structure and a compressed gas input structure, and the shell of the backflush is further provided with There is a backwash liquid overflow port, and the backwash liquid overflow port is connected to the output port of the clear liquid delivery main pipe through the backwash liquid overflow pipe, then the output port of the clear liquid delivery main pipe is overall higher than the A recoil overflow port is provided, and an ascending section is provided on the recoil overflow pipe.
  10. 如权利要求1所述的共沉淀反应系统，其特征在于：包括汽液分离器，所述汽液分离器的外壳上分别设有汽液混合相输入结构、被分离液相输出结构和被分离气相输出结构，所述汽液混合相输入结构与所述已浓缩浆料出料结构连接，所述被分离液相输出结构与所述已浓缩浆料回流结构连接；The co-precipitation reaction system according to claim 1, characterized in that it includes a vapor-liquid separator, and the casing of the vapor-liquid separator is respectively provided with a vapor-liquid mixed phase input structure, a separated liquid phase output structure and a separated liquid phase output structure. A gas phase output structure, the gas-liquid mixed phase input structure is connected to the concentrated slurry discharge structure, and the separated liquid phase output structure is connected to the concentrated slurry reflux structure;
    并且/或者，包括回流管，所述回流管的一端与所述待浓缩浆料进料结构连接，另一端与所述已浓缩浆料出料结构连接；所述回流管上至少设有阀门和换热冷却器中的阀门；And/or, it includes a return pipe, one end of the return pipe is connected to the feed structure of the slurry to be concentrated, and the other end is connected to the discharge structure of the concentrated slurry; the return pipe is provided with at least a valve and Valves in heat exchange coolers;
    并且/或者，所述共沉淀反应单元与所述过滤浓缩单元之间设有进料泵。 And/or, a feed pump is provided between the co-precipitation reaction unit and the filtration concentration unit.
PCT/CN2023/104747 2022-05-31 2023-06-30 Co-precipitation reaction system WO2023232157A1 (en)

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