Double-cavity reaction kettle with dynamic anti-blocking filtering function

Abstract

The invention relates to the technical field of chemical reaction and solid-liquid separation equipment, and discloses a double-cavity reaction kettle with a dynamic anti-blocking filtering function, the double-cavity reaction kettle is formed by communicating a first kettle body and a second kettle body through a transition valve, and the second kettle body is arranged below the first kettle body; a feeding hole is formed in the first kettle body, and a stirring assembly for stirring and mixing reaction materials is also arranged in the first kettle body; a liquid outlet is formed in the second kettle body, a filtering component located above the liquid outlet is arranged in the second kettle body, a rotating shaft penetrating through the filtering component is further rotationally arranged in the second kettle body, the rotating shaft is driven by a driving device to rotate, at least one set of scrapers are further fixedly arranged on the rotating shaft, and a discharging port is formed in the kettle wall of the second kettle body; the working face of the scraper is attached to the upper surface of the filtering component and used for scraping solid materials remaining on the surface of the filtering component and discharging the solid materials through the discharging port, and a material guide groove used for receiving the solid materials discharged out of the discharging port is further formed in the outer portion of the second kettle body.

Description

Technical Field

[0001] This invention relates to the field of chemical reaction and solid-liquid separation equipment technology, specifically to a dual-chamber reactor with dynamic anti-clogging filtration function. Background Technology

[0002] Existing dual-chamber reactors typically employ an upper reaction chamber and a lower filtration chamber (or separation chamber) structure to complete the reaction and post-processing within the same device. This type of equipment is effective in systems with low solid content or good flowability. However, when processing materials with high solid content, high viscosity, or those prone to agglomeration, existing dual-chamber reactors generally suffer from the following shortcomings: Since the lower filtration chamber often uses static filter plates or sieves, solid particles easily accumulate on the surface of the filter components (filter plates or sieves) during material filtration. Once the filter components become clogged, the filtration efficiency drops significantly, sometimes requiring shutdown for cleaning. The filtration and cleaning processes cannot be performed simultaneously, making it difficult to meet the requirements of continuous or long-cycle operation.

[0003] Therefore, how to achieve real-time anti-clogging and stable solid-liquid separation during the filtration process in a dual-chamber reactor has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0004] The purpose of this invention is to design a dual-chamber reactor with dynamic anti-clogging filtration function, which aims to solve the problem that existing dual-chamber reactors are prone to clogging of the filter components, making it difficult for the equipment to meet the requirements of continuous or long-cycle operation.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: This invention designs a dual-chamber reactor with dynamic anti-clogging filtration function. The dual-chamber reactor is composed of a first reactor body and a second reactor body connected by a transition valve, with the second reactor body located below the first reactor body. The first vessel body is provided with a feed inlet, and its interior is also provided with a stirring component for stirring and mixing the reaction materials. The second vessel body is provided with a liquid outlet, and a filter component located above the liquid outlet is provided inside the second vessel body. A rotating shaft passing through the filter component is also rotatably provided inside the second vessel body. The rotating shaft is driven to rotate by a drive device. At least one set of scrapers is fixedly provided on the rotating shaft. A discharge port is provided on the vessel wall of the second vessel body. The working surface of the scraper is in contact with the upper surface of the filter component to scrape off the solid material retained on the surface of the filter component and discharge it through the discharge port to prevent the filter component from clogging. A guide trough is also provided on the outside of the second vessel body to receive the solid material discharged from the discharge port.

[0006] Specifically, this invention designs a dual-chamber reactor with dynamic anti-clogging filtration function, which overcomes the problem of easy clogging of filter components in existing dual-chamber reactors. This ensures stable operation of the equipment and prevents shutdowns due to filter component blockage, thus solving the problem that existing dual-chamber reactors cannot meet the requirements of continuous or long-cycle operation. Thanks to the optimized structural design of this dual-chamber reactor, it can automatically and dynamically clean the material accumulated on the surface of the filter components during the filtration process, thereby improving the stability of filtration. Furthermore, this dual-chamber reactor is also suitable for the reaction and separation of various materials with high solid content, high viscosity, or easy agglomeration, demonstrating good industrial applicability.

[0007] Furthermore, a dual-chamber reactor with dynamic anti-clogging filtration function: the bottom of the first reactor body is configured as a funnel-shaped structure, and the bottom is connected to the top of the second reactor body through the transition valve.

[0008] Furthermore, a dual-chamber reactor with dynamic anti-clogging filtration function: the feed inlet is located at the top of the first reactor body.

[0009] Furthermore, a dual-chamber reactor with dynamic anti-clogging filtration function is provided: the first reactor body is also provided with an exhaust port.

[0010] Furthermore, a dual-chamber reactor with dynamic anti-clogging filtration function is provided: a heating jacket is also provided on the outside of the first reactor body to provide a preset reaction temperature inside the first reactor body. Specifically, heating by the heating jacket can create suitable temperature conditions for the reaction to take place inside the first reactor body.

[0011] Furthermore, a dual-chamber reactor with dynamic anti-clogging filtration function: the stirring assembly includes a stirring device, a stirring rod, and several stirring paddles; the stirring rod is rotatably disposed in the first reactor body, the stirring paddles are fixedly disposed on the stirring rod, and the stirring device is disposed at the top of the first reactor body for driving the stirring rod to rotate.

[0012] Furthermore, a dual-chamber reactor with dynamic anti-clogging filtration function is provided: the driving device is disposed on the top of the second reactor body and is used to drive the rotating shaft to rotate. Specifically, the specific location of the driving device is not limited, as long as it can drive the rotating shaft to rotate.

[0013] Furthermore, a dual-chamber reactor with dynamic anti-clogging filtration function: the bottom of the second reactor body is configured as a funnel-shaped structure, the top is configured as an inverted funnel-shaped structure, and the liquid outlet is located at the bottom.

[0014] Furthermore, a dual-chamber reactor with dynamic anti-clogging filtration function: the filter component includes a coarse-pore filter plate and a fine-pore filter plate disposed below it; the rotating shaft passes through the coarse-pore filter plate and the fine-pore filter plate and forms a precise rotational fit with them; two sets of scrapers are fixedly disposed on the rotating shaft and respectively attached to the upper surfaces of the coarse-pore filter plate and the fine-pore filter plate; the second reactor body has discharge ports respectively disposed on the reactor wall corresponding to the positions of the coarse-pore filter plate and the fine-pore filter plate.

[0015] Specifically, the coarse-pore filter plate and the fine-pore filter plate can be selected and replaced according to the particle size of the actual filtered material. The coarse-pore filter plate and the fine-pore filter plate are installed inside the second vessel body but do not rotate with the rotating shaft, or even if the coarse-pore filter plate and the fine-pore filter plate do rotate, they have a speed difference with the rotating shaft (scraper). This ensures that the scraper can scrape off the solid material retained on the surface of the coarse-pore filter plate and the fine-pore filter plate and discharge it through the outlet.

[0016] Furthermore, a dual-chamber reactor with dynamic anti-clogging filtration function is provided: an inwardly inclined baffle is also provided around the inner circumference of the second reactor body, which is used to guide the reacted material in the first reactor body to fall into the middle of the filter component.

[0017] Specifically, the reacted material (solid-liquid mixture) in the first vessel is released into the second vessel through the transition valve. At this time, thanks to the inclined baffle, the material released from the upper transition valve can be guided to the middle and fall into the coarse pore filter plate near the middle position. This can prevent the material from falling directly into the guide trough from the outlet without filtration. At the same time, inward inclined baffles are also set on the inner circumference of the second vessel below the coarse pore filter plate and above the fine pore filter plate. This can guide the material passing through the coarse pore filter plate to the middle and fall into the fine pore filter plate near the middle position. After being filtered by the fine pore filter plate, the filtrate is discharged from the lower outlet, while the solid material is intercepted and scraped off by the scraper, and enters the guide trough for collection through the outlet.

[0018] The beneficial effects of this invention are: The dual-chamber reactor with dynamic anti-clogging filtration function designed in this invention can avoid clogging of the filter components and improve filtration stability: by setting a relatively rotating scraper above the filter components, the surface of the filter components can be continuously cleaned during the filtration process, effectively avoiding clogging caused by the accumulation of solid materials and ensuring stable filtration; there is no need to stop the machine for cleaning due to clogging of the filter components, realizing the synchronous operation of the filtration and cleaning processes, eliminating the need to stop the machine for cleaning after filtration, improving the operating efficiency of the equipment, and solving the problem that existing dual-chamber reactors cannot meet the requirements of continuous or long-cycle operation.

[0019] The dual-chamber reactor with dynamic anti-clogging filtration function designed in this invention is suitable for reaction systems with high solid content and high viscosity. By setting a filter component and a scraper that can rotate relative to and fit with the filter component in the second reactor body, a dynamic anti-clogging filtration structure is formed, which enables the dual-chamber reactor to stably process reaction slurries with high solid content or easy agglomeration, thus broadening the application range of the dual-chamber reactor.

[0020] The dual-chamber reactor with dynamic anti-clogging filtration function designed in this invention is beneficial for achieving continuous or long-cycle operation. Through the synergistic filtration and cleaning processes, it provides a structural foundation for continuous or semi-continuous production processes. Furthermore, the dual-chamber reactor of this invention has a relatively simple structural design, high reliability, low manufacturing and maintenance costs, strong industrial applicability, and good industrial promotion value. In addition, by incorporating an inward-curving inclined baffle in the second vessel body, this invention ensures that materials falling from above can fully pass through the filtration components for solid-liquid separation, preventing unfiltered materials from falling directly into the feed trough from the outlet. This ensures that the material collected in the feed trough is solid and free of filtrate. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the dual-chamber reactor with dynamic anti-clogging filtration function designed in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the assembly of the rotating shaft, scraper and filter components in Example 1.

[0023] The markings in the image are as follows: 1-First vessel body, 2-Transition valve, 3-Second vessel body, 11-Inlet, 12-Stirring assembly, 13-Exhaust port, 14-Heating jacket, 31-Liquid outlet, 32-Filtering component, 33-Rotating shaft, 34-Scraper, 35-Discharge port, 36-Guide trough, 37-Inclined baffle, 121-Stirring device, 122-Stirring rod, 123-Stirring paddle, 321-Coarse pore filter plate, 322-Fine pore filter plate. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "top," and "bottom," etc., indicating orientation or positional relationships, are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein.

[0026] Example 1

[0027] like Figures 1-2 As shown, this embodiment 1 designs a dual-chamber reactor with dynamic anti-clogging filtration function. The dual-chamber reactor is composed of a first reactor body 1 and a second reactor body 3 connected by a transition valve 2. The second reactor body 3 is located below the first reactor body 1. The bottom of the first vessel 1 is configured as a funnel-shaped structure and is connected to the top of the second vessel 3 through a transition valve 2. The top of the first vessel 1 is provided with a feed inlet 11, and the side wall of the first vessel 1 is provided with an exhaust port 13 near the top. The interior is also provided with a stirring assembly 12 for stirring and mixing the reactants. The exterior of the first vessel 1 is also provided with a heating jacket 14 to provide the required reaction temperature inside the first vessel 1. The stirring assembly 12 includes a stirring device 121, a stirring rod 122, and several stirring paddles 123. The stirring device 121 can be set on the top of the first vessel 1. The stirring rod 122 is rotatably set in the first vessel 1 and driven to rotate by the stirring device 121. The stirring paddles 123 are fixedly set on the stirring rod 122 to stir and mix the reactants evenly. The second vessel body 3 has a funnel-shaped bottom and an inverted funnel-shaped top. A liquid outlet 31 is located at the bottom of the second vessel body 3. A filter element 32 is located inside the second vessel body 3, above the liquid outlet 31. A rotating shaft 33, passing through the filter element 32, is also rotatably mounted inside the second vessel body 3. The rotating shaft 33 can be driven to rotate by a driving device (not shown in the figure) located at the top of the second vessel body 3. The filter element 32 includes a coarse-pore filter plate 321 and a fine-pore filter plate 322 located below it. The rotating shaft 33 passes through both the coarse-pore filter plate 321 and the fine-pore filter plate 322, forming a precision joint with both. The rotating shaft 33 is also fixedly equipped with two sets of scrapers 34. The second vessel body 3 has discharge ports 35 respectively on its vessel wall corresponding to the positions of the coarse pore filter plate 321 and the fine pore filter plate 322. The working surfaces of the two sets of scrapers 34 are respectively attached to the upper surfaces of the coarse pore filter plate 321 and the fine pore filter plate 322 to scrape off the solid materials retained on the surfaces of the coarse pore filter plate 321 and the fine pore filter plate 322 and discharge them through the discharge ports 35 to prevent the coarse pore filter plate 321 and the fine pore filter plate 322 from clogging. The second vessel body 3 is also provided with a guide trough 36 on its exterior to receive the solid materials discharged from the discharge ports 35.

[0028] Preferably, an inwardly tapered inclined baffle 37 is also provided around the inner circumference of the second vessel body 3, which is used to guide the reacted material in the first vessel body 1 to fall into the middle of the filter member 32; specifically, two sets of inclined baffles 37 can be provided, which are respectively provided above the coarse pore filter plate 321 and above the fine pore filter plate 322. After the reaction is completed, the reacted material (solid-liquid mixture) in the first vessel 1 is released into the second vessel 3 through the transition valve 2. At this time, the inclined baffle 37 set above the coarse pore filter plate 321 can guide the material released from the transition valve 2 to gather in the middle of the second vessel 3 and fall into the middle position of the surface of the coarse pore filter plate 321. The coarse pore filter plate 321 is used to perform primary filtration of the reacted material. Large particles of solid material are intercepted and discharged through the scraper 34 and the discharge port 35. The design of the inclined baffle 37 can prevent the reacted material from falling directly into the discharge port 35, thus preventing the material from falling directly into the guide trough 36 from the discharge port 35 without filtration. After primary filtration, the material falls through the coarse pore filter plate 321 into the fine pore filter plate 322. At this time, an inwardly inclined baffle 37 can also be set on the inner circumference of the second vessel body 3 below the coarse pore filter plate 321 and above the fine pore filter plate 322. This can guide the material passing through the coarse pore filter plate 321 to gather in the middle and fall into the fine pore filter plate 322 near the middle position. After secondary fine filtration by the fine pore filter plate 322, the filtrate is discharged from the lower outlet 31, while small solid particles are intercepted and scraped off by the scraper 34, and enter the feed trough 36 through the discharge port 35 for collection.

[0029] Specifically, the dual-chamber reactor with dynamic anti-clogging filtration function of this invention can be applied to the repair of waste lithium iron phosphate. For example, waste lithium iron phosphate, repair solution (such as DMAB or DMSO) and lithium replenishing agent (such as lithium acetate) are added to the first reactor body 1 for reaction. After the reaction, the transition valve 2 is opened, and the reaction material enters the second reactor body 3 from the first reactor body 1. Then, the reaction material is filtered by the coarse pore filter plate 321 and the fine pore filter plate 322 in sequence for primary and secondary filtration. The solid material (i.e. the repaired lithium iron phosphate) retained by the primary and secondary filters is scraped off by the scraper 34 and enters the feed trough 36 through the discharge port 35 for collection, thus completing the repair of waste lithium iron phosphate.

[0030] The above-described preferred embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of the invention. Any obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A dual-chamber reactor with dynamic anti-clogging filtration function, characterized in that, The dual-chamber reactor is composed of a first vessel body (1) and a second vessel body (3) connected by a transition valve (2), with the second vessel body (3) located below the first vessel body (1). The first vessel body (1) is provided with a feed inlet (11), and a stirring assembly (12) for stirring and mixing the reaction materials is also provided inside it. The second vessel body (3) is provided with a liquid outlet (31), and a filter component (32) located above the liquid outlet (31) is provided inside the second vessel body (3). A rotating shaft (33) passing through the filter component (32) is also rotatably provided inside the second vessel body (3). The rotating shaft (33) is driven to rotate by a driving device. At least one set of scrapers (34) is fixedly provided on the rotating shaft (33). A discharge port (35) is provided on the vessel wall of the second vessel body (3). The working surface of the scraper (34) is in contact with the upper surface of the filter component (32) to scrape off the solid material retained on the surface of the filter component (32) and discharge it through the discharge port (35). A guide trough (36) is also provided on the outside of the second vessel body (3) to receive the solid material discharged from the discharge port (35).

2. A dual-chamber reactor with dynamic anti-clogging filtration function according to claim 1, characterized in that, The bottom of the first vessel (1) is configured as a funnel-shaped structure, and the bottom is connected to the top of the second vessel (3) through the transition valve (2).

3. A dual-chamber reactor with dynamic anti-clogging filtration function according to claim 1, characterized in that, The feed inlet (11) is located at the top of the first vessel body (1).

4. A dual-chamber reactor with dynamic anti-clogging filtration function according to claim 1, characterized in that, The first vessel body (1) is also provided with an exhaust port (13).

5. A dual-chamber reactor with dynamic anti-clogging filtration function according to claim 1, characterized in that, The first vessel body (1) is also provided with a heating jacket (14) to provide a preset reaction temperature inside the first vessel body (1).

6. A dual-chamber reactor with dynamic anti-clogging filtration function according to claim 1, characterized in that, The stirring assembly (12) includes a stirring device (121), a stirring rod (122), and a plurality of stirring paddles (123). The stirring rod (122) is rotatably disposed in the first vessel body (1), the stirring paddle (123) is fixedly disposed on the stirring rod (122), and the stirring device (121) is disposed on the top of the first vessel body (1) for driving the stirring rod (122) to rotate.

7. A dual-chamber reactor with dynamic anti-clogging filtration function according to claim 1, characterized in that, The driving device is located on the top of the second vessel body (3) and is used to drive the rotating shaft (33) to rotate.

8. A dual-chamber reactor with dynamic anti-clogging filtration function according to claim 1, characterized in that, The bottom of the second vessel body (3) is configured as a funnel-shaped structure, and the top is configured as an inverted funnel-shaped structure, with the liquid outlet (31) located at the bottom.

9. A dual-chamber reactor with dynamic anti-clogging filtration function according to claim 1, characterized in that, The filter element (32) includes a coarse-pore filter plate (321) and a fine-pore filter plate (322) disposed below it. The rotating shaft (33) passes through the coarse-pore filter plate (321) and the fine-pore filter plate (322) and forms a precise rotational fit with them; Two sets of scrapers (34) are fixedly installed on the rotating shaft (33) and respectively attached to the upper surfaces of the coarse pore filter plate (321) and the fine pore filter plate (322); The second vessel body (3) has discharge ports (35) respectively provided on the vessel wall corresponding to the positions of the coarse pore filter plate (321) and the fine pore filter plate (322).

10. A dual-chamber reactor with dynamic anti-clogging filtration function according to claim 1, characterized in that, An inwardly inclined baffle (37) is also provided around the inner circumference of the second vessel body (3), which is used to guide the reacted material in the first vessel body (1) to fall into the middle of the filter member (32).

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