Device for separating catalyst and reaction liquid

Abstract

The utility model provides a catalyst and reaction liquid separation device which comprises a tank body and a pair of brackets, and a mother liquid outlet and a catalyst outlet are respectively formed in a pair of oppositely arranged conical ends of the tank body; a discharge valve is arranged at the catalyst outlet, and a sealing cover covers the mother liquor outlet; the tank body is rotatably arranged between the pair of supports, and the rotating axis of the tank body is located in the middle of the tank body and is perpendicular to the plane where the pair of conical ends of the tank body are located; the device further comprises a feeding pipe, and the feeding pipe is arranged at the rotating axis of the tank body, so that the problems existing when raney nickel uses existing filtering equipment are well solved, blockage caused by sedimentation of a raney nickel catalyst in a pipeline is avoided, the blockage frequency of a catalyst filter element is reduced, the frequency of cleaning the filter element of the filter can be reduced, and the filtering efficiency of the filter is improved. Continuous process operation is ensured, the filtering efficiency is improved, and the safety coefficient is improved.

Description

Technical Field

[0001] This utility model relates to the field of fine chemical equipment, and in particular to a device for separating catalysts and reaction liquids. Background Technology

[0002] The hydrogenation reaction of perhydroacenaphthene involves a large amount of catalyst, and the characteristics and operating conditions of these catalysts are crucial to the safety and efficiency of the entire reaction process. Several key technical challenges and backgrounds exist regarding the use of catalysts in this process:

[0003] Catalysts commonly used in the hydrogenation reaction of acenaphthene, such as Raney Ni, are prone to spontaneous combustion due to their high surface area and catalytic activity. During experiments or production, if the catalyst is exposed to air for an extended period, or if heat accumulates due to operational errors, combustion may occur when the heat reaches a certain level.

[0004] In the hydrogenation reaction of acenaphthene, conventional filters are prone to clogging and require frequent catalyst cleaning. This is because catalyst particles may deposit during filtration, leading to a decrease in filter efficiency. Common existing technologies for filtering catalysts include candle filters. For example, utility model patent CN222033854U discloses a high-efficiency candle filter, which includes a tank and multiple filter components located inside the tank. Each filter component includes a filter tube sealed at the top, multiple filter cloths fitted over the outer wall of the filter tube, multiple filter holes on the side wall of the filter tube, a drain pipe at the lower end of the filter tube, a backflushing pipe connected to the lower side wall of the filter tube, a first valve on the drain pipe, and a second valve on the backflushing pipe. The filter holes are elliptical.

[0005] In practical applications, in systems with large weight and a large amount of catalyst, filtration often results in problems such as easy clogging of pipes, frequent clogging of catalyst filter elements, poor backflushing effect, and disruption of continuous operation. It requires frequent manual cleaning of catalysts that are clogged on filter cloth and other components, resulting in low filtration efficiency. Furthermore, Raney nickel catalysts are prone to spontaneous combustion, posing a safety hazard. Utility Model Content

[0006] Therefore, there is a need to provide a device for separating catalysts and reaction liquids to solve the problems of existing Raney nickel catalyst filters in actual use, such as easy pipe blockage, frequent catalyst filter element blockage, poor backflushing effect, and disruption of continuous operation in systems with large weight and large amount of catalyst. These problems require frequent manual cleaning of catalysts clogging filter cloth and other components, resulting in low filtration efficiency. Furthermore, Raney nickel catalysts are prone to spontaneous combustion, posing a safety hazard.

[0007] To achieve the above objectives, this utility model provides a device for separating a catalyst and a reaction liquid, comprising a tank and a pair of supports. The pair of oppositely arranged conical ends of the tank are respectively provided with a mother liquor outlet and a catalyst outlet. A discharge valve is provided at the catalyst outlet, and a sealing cap is provided at the mother liquor outlet. The tank is rotatably disposed between the pair of supports, and the rotation axis of the tank is located in the middle of the tank and is perpendicular to the plane where the pair of conical ends of the tank are located. It also includes a feed pipe, which is disposed at the rotation axis of the tank.

[0008] Furthermore, each of the pair of brackets is provided with a bearing seat and a rotating shaft on its upper part. The bearing seat is fixedly connected to the bracket, and the rotating shaft is rotatably mounted on the bearing seat. The pair of rotating shafts are arranged on both sides of the tank along the rotation axis of the tank. One end of the pair of rotating shafts is fixedly connected to the outer wall of the tank. A channel is provided at the center of one of the rotating shafts, and the feed pipe extends through the channel into the interior of the tank.

[0009] Furthermore, it also includes a drive mechanism, which is connected to one or a pair of rotating shafts to drive the tank to rotate.

[0010] Furthermore, it also includes a pressure gauge, which is mounted on the feed pipe.

[0011] Furthermore, it also includes an air inlet pipe connected to the feed pipe, and an air inlet valve is provided on the air inlet pipe.

[0012] Furthermore, it also includes an air intake pump, the air intake end of which is connected to an air source, and the air outlet end of which is connected to the air intake pipe.

[0013] Furthermore, it also includes a temperature control cavity and a temperature control tube. The temperature control cavity is wrapped around the outer wall of the tank. One end of the temperature control tube is connected to the temperature control cavity, and the other end passes through a central channel of another rotating shaft away from the feed pipe and is connected to the intermediate transfer cavity. The intermediate transfer cavity is provided with a liquid inlet and a liquid outlet. The liquid inlet is connected to a water source, and the liquid outlet is connected to a drain pipe.

[0014] Furthermore, it also includes a jacket that covers the outside of the temperature control cavity.

[0015] Unlike existing technologies, the above technical solution can effectively solve the problems existing in the use of existing filtration equipment for Raney nickel, avoid the Raney nickel catalyst settling in the pipeline and causing blockage, and reduce the frequency of catalyst filter element blockage, which can reduce the frequency of cleaning the filter element, ensure continuous operation, improve filtration efficiency, and increase the safety factor. Attached Figure Description

[0016] Figure 1This is a structural perspective view of an apparatus for separating a catalyst and a reaction solution according to a specific embodiment.

[0017] Figure 2 A perspective view of a device for separating a catalyst and a reaction liquid, as described in another specific embodiment, with a drive mechanism.

[0018] Figure 3 A perspective view of a device for separating a catalyst and a reaction liquid, as described in another specific embodiment, equipped with a pressure gauge;

[0019] Figure 4 A perspective view of a device for separating a catalyst and a reaction liquid, as described in another specific embodiment, including an inlet pipe and an inlet valve;

[0020] Figure 5 This is a side view of the structure of an apparatus for separating a catalyst and a reaction solution according to a specific embodiment.

[0021] Explanation of reference numerals in the attached figures:

[0022] 10. Tank body; 101. Mother liquor outlet; 102. Catalyst outlet; 103. Discharge valve; 104. Sealing cover; 20. Support; 30. Feed pipe; 31. Shaft seat; 32. Rotating shaft; 33. Drive mechanism; 34. Pressure gauge; 35. Air inlet pipe; 36. Air inlet valve; 41. Temperature control chamber; 42. Temperature control pipe; 43. Transfer chamber; 431. Liquid inlet; 432. Liquid outlet; 44. Jacket. Detailed Implementation

[0023] To explain in detail the technical content, structural features, objectives, and effects of the technical solution, the following description is provided in conjunction with specific embodiments and accompanying drawings.

[0024] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0025] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0026] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0027] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0028] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0029] As understood in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0030] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0031] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0032] Please see Figures 1 to 5 This embodiment provides an apparatus for separating a catalyst and a reaction liquid, including a tank 10 and a pair of supports 20. The pair of oppositely arranged conical ends of the tank 10 are respectively provided with a mother liquor outlet 101 and a catalyst outlet 102. A discharge valve 103 is provided at the catalyst outlet 102, and a sealing cap 104 is provided at the mother liquor outlet 101. The tank 10 is rotatably disposed between the pair of supports 20, and the rotation axis of the tank 10 is located in the middle of the tank 10 and is perpendicular to the plane where the pair of conical ends of the tank are located. It also includes a feed pipe 30, which is disposed at the rotation axis of the tank.

[0033] The specific structure of the tank body 10 is as follows: the upper part is a truncated cone with the narrow end facing upwards, and the lower part is a truncated cone with the narrow end facing downwards. The upper and lower parts can be directly connected and integrally formed. Since the truncated cone can be regarded as the shape formed by cutting off the tip of a cone, for ease of explanation, the two narrow ends of the tank body 10 are referred to as the cone ends in this embodiment. In order to increase the volume of the tank body 10, a cylindrical middle part can also be provided between the upper and lower parts.

[0034] The product of the hydrogenation reaction of perhydroacenaphthene is perhydroacenaphthene (also known as decahydroacenaphthene), which exists in six stereoisomers. The physical properties of perhydroacenaphthene include a density ≥0.933 g / ml and a volumetric calorific value ≥39.62 MJ / L. Strict requirements are placed on the material selection and airtightness of storage containers for perhydroacenaphthene. Therefore, both the tank body 10 and the support 20 must be made of non-combustible materials and meet certain strength requirements. Specifically, the tank body 10 can be made of a metal-lined fiber, using stainless steel or aluminum alloy to seal hydrogen gas, while the fiber reinforcement layer serves as a pressure-bearing layer, allowing for hydrogen storage pressures up to 40 MPa. This multi-layered structure not only prevents corrosion of the internal metal layer but also enables online monitoring of the tank's safety status. Alternatively, a fully composite lightweight fiber tank body 10 can be used; such tank bodies typically include a plastic inner liner, a fiber reinforcement layer, and a protective layer. Plastic liners offer superior impact toughness compared to metal liners and possess excellent airtightness, corrosion resistance, high-temperature resistance, high strength, and high toughness. Alternatively, aluminum alloys can be used. While aluminum alloys offer good strength and low-temperature performance, special treatment is required to ensure their stability and safety under high pressure. Carbon fiber composites are another option. These composites exhibit excellent mechanical and low-temperature properties, making them suitable for manufacturing the lining of liquid hydrogen storage tanks. Composed of carbon fibers and a resin matrix, this material boasts high strength, high modulus, low coefficient of thermal expansion, good heat resistance, and corrosion resistance. In conclusion, the tank 10 storing materials after the hydrogenation reaction of acenaphthene can be made of materials such as plastic liner fibers, metal liner fibers, fully composite lightweight fibers, aluminum alloys, and carbon fiber composites to ensure the container's safety, durability, and economy.

[0035] The working principle of this novel device is as follows: The tank 10 is rotated until the mother liquor outlet 101 and catalyst outlet 102 are both on the same horizontal plane. The full-hydroacenaphthene reaction solution is then introduced into the tank 10 through the inlet pipe. Utilizing the easy precipitation characteristic of Raney nickel, after the Raney nickel has completely precipitated, the sealing cap 104 is opened, and the tank 10 is rotated, slowly tilting towards the mother liquor outlet 101. The full-hydroacenaphthene reaction solution, containing little or no catalyst, is then discharged through the mother liquor outlet 101 to the precision filter at the rear end. It should be noted that an outlet pipe can be connected to the mother liquor outlet 101, and a pneumatic diaphragm pump can be connected to the rear end of the outlet pipe. A pneumatic diaphragm pump is connected to a gas source. The pneumatic diaphragm pump draws the full-hydroacenaphthene reaction solution in tank 10 into a precision filter. After the initial separation of the full-hydroacenaphthene reaction solution and the catalyst is completed by this device, the Raney nickel catalyst in the full-hydroacenaphthene reaction solution can be basically removed. Then, it is strictly filtered by the precision filter. On the one hand, it is not easy to cause clogging of the precision filter, and on the other hand, the filtration efficiency is high and the filtration is more complete. After the full-hydroacenaphthene reaction solution is drawn out, the tank is rotated in the opposite direction until the Raney nickel catalyst outlet 102 faces downward. The discharge valve 103 is opened, and the Raney nickel catalyst moves downward by its own weight for sealing.

[0036] The lowest point of the tank 10 during rotation has a certain distance from the plane below it.

[0037] Based on the aforementioned working principle, the problems existing in the use of Raney nickel filtration equipment can be effectively solved. It avoids the Raney nickel catalyst settling in the pipeline and causing blockage, and reduces the frequency of catalyst filter element blockage. This reduces the frequency of cleaning the filter element, ensures continuous operation, improves filtration efficiency, and increases the safety factor.

[0038] It should be noted that the rotation of the tank 10 can be controlled manually using a simple mechanical structure, and relevant manual drive structures in existing technologies can be referenced. To improve work efficiency, reduce manpower requirements, and increase safety, in some embodiments, each of the pair of supports 20 is provided with a bearing seat 31 and a rotating shaft 32. The bearing seat 31 is fixedly connected to the support 20, and the rotating shaft 32 is rotatably mounted on the bearing seat 31. The pair of rotating shafts 32 are located on both sides of the tank 10 along the rotation axis of the tank 10, with one end of each shaft fixedly connected to the outer wall of the tank 10. A channel is provided at the axis of one of the rotating shafts 32, through which the feed pipe 30 extends into the interior of the tank 10. A drive mechanism 33 is also included, which is connected to one or both of the rotating shafts 32, driving the tank 10 to rotate. The drive mechanism 33 can be a motor, air pump, or oil pump. Taking an oil pump as an example, the working principle of the rotating shaft 32 on its drive shaft seat 31 driving the tank 10 to rotate is a process involving mechanical transmission and fluid mechanics. First, the oil pump, as the power source, draws hydraulic oil from the oil tank and pressurizes it. The pressurized hydraulic oil is then transported through pipelines to a hydraulic motor or hydraulic cylinder. These components convert the pressure energy of the hydraulic oil into mechanical energy, namely torque and rotational speed. The shaft seat 31 is fixed on the bracket 20 and includes bearings to reduce friction and support the rotating shaft 32. The rotating shaft 32 passes through the shaft seat 31 and is connected to the hydraulic motor or hydraulic cylinder, transmitting rotational force to the tank 10, causing the tank 10 to rotate around the axis on the shaft seat 31. This rotation can be continuous or intermittent, depending on the process requirements and the settings of the control system. A control mechanism may also be provided, including pressure regulating valves, flow control valves, directional control valves, etc., to regulate the pressure, flow rate, and flow direction of the hydraulic oil to control the rotational speed and direction of rotation of the tank 10. Additionally, sensors and actuators can be installed to monitor and adjust the rotation of tank 10, ensuring the stability and safety of the process. Furthermore, safety devices such as safety valves and overflow valves can prevent system overpressure, while temperature sensors and overheat protection devices can prevent excessive oil temperature and protect the system from damage.

[0039] In some embodiments, a pressure gauge 34 is also included, which is disposed on the feed pipe 30. The pressure gauge 34 is used to monitor pressure changes within the tank 10. By monitoring the pressure in real time, the operator can ensure that the catalyst within the tank 10 is in a stable state. If the catalyst suddenly spontaneously combusts and the pressure exceeds the set safety range, the pressure gauge 34 can issue an alarm signal to remind the operator to take measures to prevent potential accidents and respond in a timely manner.

[0040] In some embodiments, an inlet pipe 35 is also included, connected to the feed pipe 30, and an inlet valve 36 is provided on the inlet pipe 35. An inlet pump is also included, with its inlet end connected to a gas source and its outlet end connected to the inlet pipe 35. The inlet pipe 35 is used to introduce nitrogen gas to purge the interior of the device. Its main function includes removing residual impurities from the equipment and pipelines to ensure smooth start-up and operation of the device. Furthermore, nitrogen purging ensures the absence of oxygen within the device, preventing spontaneous combustion of the Raney nickel catalyst. Nitrogen purging also prevents corrosive gases or liquids from damaging the equipment, extending its service life.

[0041] In some embodiments, a temperature control chamber 41 and a temperature control pipe 42 are also included. The temperature control chamber 41 is wrapped around the outer wall of the tank 10. One end of the temperature control pipe 42 is connected to the temperature control chamber 41, and the other end passes through a central channel connected to a rotating shaft 32 away from the feed pipe 30 and is connected to a transfer chamber 43. The transfer chamber 43 is provided with an inlet 431 and an outlet 432. The inlet is connected to a water source, and the outlet is connected to a drain pipe. By introducing a heat transfer medium or a cold transfer medium into the temperature control chamber 41, the interior of the tank 10 can be cooled or heated to achieve the temperature control function. Furthermore, a jacket 44 is also included, which covers the outside of the temperature control chamber 41. The jacket 44 is made of insulation material, such as glass wool.

[0042] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. An apparatus for separating a catalyst and a reaction solution, characterized in that: The application relates to a catalyst tank, which comprises a tank body and a pair of supports, a pair of opposite cone ends of the tank body are respectively provided with a mother liquor outlet and a catalyst outlet, a discharge valve is arranged at the catalyst outlet, a sealing cover is arranged at the mother liquor outlet, the tank body is rotatably arranged between the pair of supports, the rotation axis of the tank body is located in the middle of the tank body and is perpendicular to the plane where the pair of cone ends are located, and a feeding pipe is arranged at the rotation axis of the tank body.

2. The apparatus for separating a catalyst and a reaction solution according to claim 1, wherein: The upper portions of the pair of supports are respectively provided with shaft seats and rotating shafts, the shaft seats are fixedly connected with the supports, the rotating shafts are rotatably arranged on the shaft seats, one end of the pair of rotating shafts is fixedly connected with the outer wall of the tank body, the shaft center of one of the rotating shafts is provided with a channel, and the feeding pipe extends to the inside of the tank body through the channel.

3. The apparatus for separating catalyst and reaction liquid according to claim 1, wherein: A driving mechanism is further arranged, the driving mechanism is in transmission connection with one or the pair of rotating shafts, and the driving mechanism drives the tank body to rotate by driving one or the pair of rotating shafts.

4. The apparatus for separating a catalyst and a reaction solution according to claim 1, wherein: A pressure gauge is further arranged on the feeding pipe.

5. The apparatus for separating a catalyst and a reaction solution according to claim 1, wherein: An air inlet pipe is further arranged, the air inlet pipe is connected with the feeding pipe, and an air inlet valve is arranged on the air inlet pipe.

6. The apparatus for separating a catalyst and a reaction solution according to claim 5, wherein: An air inlet pump is further arranged, the air inlet end of the air inlet pump is connected with an air source, and the air outlet end is connected with the air inlet pipe.

7. The apparatus for separating a catalyst and a reaction solution according to claim 2, wherein: A temperature control cavity and a temperature control pipe are further arranged, one end of the temperature control pipe is in communication with the temperature control cavity, the other end of the temperature control pipe passes through the shaft center channel of the rotating shaft far from the feeding pipe and is connected with a transfer cavity, the transfer cavity is respectively provided with an inlet and an outlet, the inlet is connected with a water source, and the outlet is connected with a drain pipe.

8. The apparatus for separating a catalyst and a reaction solution according to claim 7, wherein: A jacket is further arranged, the jacket covers the outside of the temperature control cavity.

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