Vertical solid catalyst catalytic gas-liquid reaction device with agitation and suspension mechanism

Abstract

This utility model relates to the field of gas-liquid catalytic reaction technology, and in particular to a vertical solid catalyst gas-liquid reaction device with an agitation and suspension mechanism. The reaction tower is divided into a venting section, a filtration section, a heat exchange section, an agitation and suspension section, and a stabilization section from top to bottom. A motor and an agitator shaft are installed in the stabilization section and at the bottom, with the agitator shaft extending into the agitation and suspension section to enhance the overall stability of the reaction tower. An inlet is located near the bottom sidewall of the agitation and suspension section, allowing the liquid entering the section to impact the bottom, creating an upward impact force. Combined with the agitation and suspension mechanism within the section, this enhances the uniformity of material mixing at the bottom of the reaction tower, improving reaction efficiency. Furthermore, the filtration and drainage components in the filtration section prevent solid particles (approximately 1mm diameter palladium-carbon catalyst) from being discharged with the products, improving catalyst utilization efficiency.

Description

Technical Field

[0001] This utility model relates to the field of gas-liquid catalytic reaction technology, and in particular to a vertical solid catalyst catalytic gas-liquid reaction device with a stirring suspension mechanism. Background Technology

[0002] Gas-liquid catalytic reactions are common in the chemical industry. They are chemical reactions that occur when gas and liquid come into contact under the catalysis of a catalyst. Common reactions include: (1) waste gas treatment, such as waste gas containing harmful elements such as S, N, and F being absorbed and purified by liquid under the action of a solid catalyst. (2) organic liquid hydrogenation reaction, such as the hydrogenation reaction of cyclohexene. After cyclohexene is prepared into an organic solution, the hydrogen pumping pressure is controlled, and the reaction is carried out at 80°C under the catalysis of a palladium-on-carbon catalyst. However, these reactions all require the use of a catalytic reaction device, and the structure of the catalytic reaction device is closely related to the catalyst utilization efficiency and product quality.

[0003] Currently, existing gas-liquid catalytic reaction devices mainly fall into two categories: batch reactors and tower reactors. Batch reactors require the agitation of a stirrer to suspend the solid catalyst and gas-liquid mixture. However, according to experimental verification, due to unreasonable stirrer structure design, the suspension energy consumption of a 10m³ batch reactor reaches 8kW·h / ton of product, which is relatively high. Furthermore, the catalyst settling rate in stirred reactors is relatively high, resulting in a large amount of catalyst not participating in the recycling reaction, leading to low catalyst utilization. In addition, batch reactors can only discharge the reaction products after the gas-liquid reaction is complete, resulting in poor continuity.

[0004] Based on this, research has been conducted on devices for filtering and recovering catalysts and liquid products entrained in the exhaust gas of fluidized bed reactors. For example, the automatic catalyst filtration device for fluidized bed reactors disclosed in patent application number 202023001231.4 discloses a filter tank, with an outlet pipe at the top of the filter tank, an inlet pipe on one side of the lower part of the filter tank, a collection pipe at the bottom of the filter tank, a collection tank below the collection pipe, an insulation jacket on the outside of the filter tank, a heating medium inlet pipe and a heating medium outlet pipe on the insulation jacket, a support plate fixed in the upper part of the filter tank, multiple mounting holes on the support plate, a filter element installed in each mounting hole, a cloth bag on the outside of the filter element, a jet pipe above each filter element, a gas delivery pipe connected to the jet pipe, a solenoid valve on the gas delivery pipe, the other end of the gas delivery pipe extending out of the filter tank and connected to a main pipe, and the main pipe connected to a high-temperature nitrogen inlet pipe. The gas-liquid-catalyst mixture discharged from the reactor is filtered within the device, causing the liquid in the gas to be filtered out through a filter bag and discharged, while the solid catalyst remains inside the device and falls into a collection tank for collection. However, this prior art device solves the problem of continuously separating liquid products and achieving the separation of gas, liquid, and solid catalyst, but its applicable environment is that the reaction products are separated within the device, which only has an inlet pipe, and therefore it is not suitable for direct use in gas-liquid catalytic reaction systems.

[0005] However, when existing batch reactors are applied to gas-liquid catalytic reaction systems, they still have the following drawbacks: ① The stirring of the impeller causes the liquid in the reactor to be suspended, making heat exchange difficult and resulting in an unadjustable temperature in the stirring and suspension section; ② The reaction products need to be discharged from the reactor after the reaction is completed to separate the catalyst-liquid mixture, resulting in a long cycle and low catalyst utilization efficiency.

[0006] In view of the above-mentioned technical deficiencies, based on the project research on improving catalyst utilization efficiency by solid catalyst catalysis of gas-liquid reaction in continuous flow reaction system, our research team studied gas-liquid reaction device and constructed a research and development concept system of horizontal S-shaped flow channel, horizontal swirling flow channel, tower swirling separation and vertical stirring suspension filtration. Taking into account the gas-liquid reaction principle and continuous production, we have provided a new device for the gas-liquid reaction process. Utility Model Content

[0007] To address the aforementioned technical issues, this invention provides a vertical solid catalyst gas-liquid reaction device with an agitation and suspension mechanism. The product liquid is filtered and discharged from the reaction tower from the filtration section using a filtration and drainage assembly. The agitation and suspension mechanism in the agitation and suspension section allows the catalyst accumulated at the bottom to be agitated and suspended, promoting full contact between the catalyst and the liquid to be reacted within the agitation and suspension section. This improves the reaction efficiency between the liquid to be reacted and the gas to be reacted (hydrogen), while simultaneously preventing the catalyst from being discharged with the product, thus improving catalyst utilization efficiency.

[0008] The specific technical solution is as follows:

[0009] A vertical solid catalyst catalytic gas-liquid reaction device with an agitation and suspension mechanism includes a reaction tower, which is divided from top to bottom into an evacuation section, a filtration section, a heat exchange section, an agitation and suspension section, and a stabilization section. The stabilization section has a vertically upward mounting channel at its center, containing several sealed bearings. An agitator shaft is installed within each sealed bearing, with its top end located within the agitation and suspension section and its bottom end extending out of the stabilization section and connected to a motor. The stabilization section includes an air inlet pipe and a circulation pipe. The agitation and suspension section has a liquid inlet near its bottom sidewall and contains an agitation and suspension mechanism connected to the agitator shaft. The heat exchange section contains heat exchange coils, the filtration section contains a filtration and drainage assembly, and the evacuation section contains a defoaming and evacuation assembly.

[0010] The reaction tower is divided into four sections from top to bottom: an evacuation section, a filtration section, a heat exchange section, a stirring and suspension section, and a stabilization section. A motor and a stirring shaft are installed in the stabilization section and at the bottom, with the stirring shaft extending into the stirring and suspension section to enhance the overall stability of the reaction tower. An inlet is located near the bottom sidewall of the stirring and suspension section, allowing the liquid entering the section to impact the bottom and generate an upward impact force. Combined with the stirring and suspension mechanism within the section, this enhances the uniformity of material mixing at the bottom of the reaction tower, improves reaction efficiency, and suspends the liquid material within the device. Furthermore, a filtration and drainage component is installed in the filtration section to prevent solid particles (approximately 1mm diameter palladium-on-carbon catalyst) from being discharged with the products, thus improving catalyst utilization efficiency.

[0011] In order to make the liquid, particulate catalyst and gas in the agitated suspension section more uniformly mixed, the agitated suspension mechanism preferably consists of several agitator blades fixedly installed on the agitator shaft.

[0012] To improve the efficiency of the contact mixing reaction between liquid, particulate catalyst, and gas, ensuring consistency between the center and edges of the agitation suspension mechanism, and to reserve sufficient space within the agitation suspension section for installing heat exchange structures to enhance temperature regulation and improve product quality, the agitation suspension mechanism preferably includes several bottom rods fixedly mounted on the agitation shaft near the bottom of the agitation suspension section and several top rods fixedly mounted on the top of the agitation shaft. Vertically upward-facing uprights are fixedly mounted on the bottom rods, and outer blades are fixedly mounted on the uprights. Vertically downward-facing hanging rods are fixedly mounted on the top rods, and inner blades are fixedly mounted on the hanging rods. A first channel is formed between the inner blades and the outer blades; a second channel is formed between the bottom of the inner blades and the upper surface of the bottom rods; and a third channel is formed between the inner blades and the agitation shaft. The first, second, and third channels constitute an upward-opening U-shaped channel. More preferably, in order to improve the mixing and contact reaction effect of liquid, particulate catalyst and gas as much as possible to be consistent with the mixing and contact reaction effect closer to the agitation shaft, the number of bottom rods and top rods is equal, and one bottom rod is equipped with an outer blade and one top rod is equipped with an inner blade. Preferably, there are at least three bottom rods, which are evenly installed on the agitation shaft.

[0013] To improve the temperature regulation effect of heat exchange within the reaction tower, preferably, the heat exchange coil includes a medium inlet and a medium outlet, both of which are fixedly installed on the side wall of the heat exchange section; a plurality of heat exchange tubes are installed between the medium inlet and the medium outlet; the heat exchange tubes are coiled and installed within the heat exchange section. More preferably, the heat exchange coil includes a medium inlet and a medium outlet, both of which are fixedly installed on the side wall of the heat exchange section; a plurality of U-shaped tubes are installed between the medium inlet and the medium outlet, the U-shaped tubes being able to be inserted into the agitation and suspension section, the agitation and suspension section having U-shaped channels for arranging the U-shaped tubes and for satisfying the agitation of the agitation and suspension mechanism. More preferably, the heat exchange coil includes a medium inlet and a medium outlet, both of which are fixedly installed on the side wall of the heat exchange section; a plurality of heat exchange tubes and U-shaped tubes are installed between the medium inlet and the medium outlet; the heat exchange tubes are coiled and installed inside the heat exchange section; the U-shaped tubes can be inserted into the agitation and suspension section, and the agitation and suspension section is provided with U-shaped channels for the U-shaped tubes to be laid out and to meet the agitation of the agitation and suspension mechanism.

[0014] To ensure smooth flow of the heat exchange medium and rotation of the agitator shaft, preferably, the U-shaped tube is provided with a connecting pipe, and the connecting pipe is provided with a shaft position for the agitator shaft.

[0015] More preferably, the shaft position is a semi-circular arc around which the agitator shaft can bypass; or the shaft position is a circular hole, and a rotating component (bearing) is installed in the circular hole, through which the agitator shaft is installed.

[0016] To prevent particulate catalyst from being discharged into the reaction tower along with the product, thereby improving catalyst utilization and enhancing the installation stability of the filtration and drainage assembly, the filtration and drainage assembly preferably includes a drainage pipe fixedly installed on the side wall of the filtration section, a support frame fixedly installed inside the filtration section, and several filter cartridges fixedly installed on the support frame, wherein the filter cartridges filter from the outside to the inside, and each filter cartridge has a drainage port at its top; a collecting pipe is provided at the top of the drainage port, and the collecting pipe is connected to the drainage pipe. In some embodiments, a nanofiltration membrane assembly or a microporous membrane assembly is installed on the filter cartridge.

[0017] To prevent liquid droplets from entering the exhaust pipe and to achieve the recycling of the exhaust gas, preferably, the defoaming and venting assembly includes a wire mesh defoamer (a wire mesh defoamer commonly used in the prior art) installed in the venting section and an exhaust pipe located at the top of the venting section; the exhaust pipe is provided with a circulation interface, the circulation interface is connected to the circulation pipe, and a circulation pump is provided between the circulation interface and the circulation pipe.

[0018] Compared with the prior art, the technical effects of this invention are reflected in:

[0019] This invention utilizes an agitation and suspension mechanism within an agitation and suspension section. This mechanism agitates and suspends the particulate catalyst particles accumulated at the bottom in the liquid. Simultaneously, an inlet is installed on the bottom sidewall of the agitation and suspension section, and an inlet pipe and / or circulation pipe are provided within the stabilization section. This ensures that when liquid or gas (hydrogen) is transported into the agitation and suspension section, the impact force creates an upward effect, thereby reducing the difficulty of agitation and suspension, improving the uniformity of gas-liquid mixing, ensuring the catalyst's catalytic effect on gas-liquid mixing, and improving product quality. Furthermore, the design of the filtration and drainage component prevents the catalyst from being discharged with the product, improving catalyst utilization and reducing costs.

[0020] This invention has a simple structure, is easy to industrialize and promote, and can realize continuous hydrogenation, thereby improving the production efficiency of hydrogenation reaction equipment.

[0021] This invention improves the structure of the agitation and suspension mechanism, creating a U-shaped channel within it for arranging heat exchange structures. This not only reduces the overall weight of the agitation and suspension mechanism and lowers its energy consumption while ensuring excellent agitation and suspension effects, but also features a heat exchange structure that is compatible with the U-shaped tubes installed within the U-shaped channel and does not affect the agitation and suspension function of the mechanism, connecting them to the medium inlet and outlet. This significantly improves the heat exchange effect and helps ensure the quality of the product. Attached Figure Description

[0022] To facilitate a thorough understanding of the technical solution of this invention by those skilled in the art, the following description is provided in conjunction with the technical solution and the accompanying drawings. The directional terms used in this invention, such as "up," "down," "front," "back," "left," and "right," are merely illustrative descriptions in conjunction with the accompanying drawings and are not intended to limit the technical solution of this invention.

[0023] Figure 1 This is a schematic diagram of the overall structure created by the present invention.

[0024] Figure 2 for Figure 1 Another embodiment of the structural diagram.

[0025] Figure 3 for Figure 1 Another embodiment of the structural diagram.

[0026] Figure 4 for Figure 1 Another embodiment of the structural diagram.

[0027] Figure 5 for Figure 2 Schematic diagram of the agitation suspension mechanism.

[0028] Figure 6 for Figure 1 Schematic diagram of the heat exchanger coil structure.

[0029] Figure 7 for Figure 4 Schematic diagram of the heat exchanger coil structure.

[0030] Figure 8 for Figure 3 Schematic diagram of the heat exchanger coil structure.

[0031] Figure 9 for Figure 8 A top-down view of the structure at the location indicated by the arrow.

[0032] Figure 10 for Figure 9 Another embodiment of the structural diagram.

[0033] 1-Exhaust pipe 2-Circulation interface 3-Wire mesh demister 4-Filter section 5-Heat exchange section 6-Agitation suspension section 7-Circulation pump 8-Circulation pipe 9-Motor 10-Inlet pipe 11-Installation channel 12-Sealed bearing 13-Agitator blade 14-Liquid inlet 15-Agitator shaft 16-Medium inlet 17-Medium outlet 18-Heat exchange tube 19-Filter cylinder 20-Drain pipe 21-Gathering pipe 22-Support frame 23-U-shaped pipe 24-Connecting pipe 25-Shaft position 26-Rotating component 13.1-Bottom rod 13.2-Top rod 13.3-Outer blade 13.4-U-shaped channel 13.5-Inner blade. Detailed Implementation

[0034] To facilitate a correct understanding of the present invention by those skilled in the art, and to enable them to fully understand the technical content of the present invention, the technical solution of the present invention will be further described below in conjunction with specific embodiments. However, this description does not limit the scope of protection claimed by the present invention. Those skilled in the art should not limit the scope of protection of the present invention to the following description. Any equivalent substitutions or changes made by those skilled in the art or those familiar with the art based on the present invention, and based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, a vertical solid catalyst catalytic gas-liquid reaction device with an agitation and suspension mechanism includes a reaction tower, which is divided from top to bottom into an evacuation section, a filtration section 4, a heat exchange section 5, an agitation and suspension section 6, and a stabilization section. The stabilization section has a vertically upward mounting channel 11 at its center, with several sealed bearings 12 inside the channel 11. An agitator shaft 15 is installed inside each sealed bearing 12, with its top end located within the agitation and suspension section 6. The bottom end of the agitator shaft 15 extends out of the stabilization section and is connected to a motor 9. The stabilization section includes an air inlet pipe 10 and a circulation pipe 8. The agitation and suspension section 6 has a liquid inlet 14 near its bottom sidewall, and an agitation and suspension mechanism is installed within it, connected to the agitator shaft 15. The heat exchange section 5 contains a heat exchange coil, the filtration section 4 contains a filtration and drainage assembly, and the evacuation section contains a defoaming and evacuation assembly.

[0036] In use, the catalyst (palladium on carbon catalyst with a particle size of approximately 1 mm) is added to the liquid to be hydrogenated and mixed evenly. The mixture is then fed into the reaction tower through inlet 14. Simultaneously, hydrogen gas is introduced into the reaction tower through inlet pipe 10. The motor 9 is then turned on, causing the stirring shaft 15 to rotate. The stirring shaft 15 rotates the agitation and suspension mechanism located in the agitation and suspension section 6, making the liquid in the agitation and suspension section 6 dynamic. This causes the particulate catalyst in the agitation and suspension section 6 to suspend in the liquid, improving the catalyst-liquid contact efficiency, and consequently improving the efficiency and effect of the liquid-hydrogen reaction. As the hydrogenation reaction proceeds... As the liquid feed rate increases, the liquid continuously rises to the top of the reaction tower. The liquid that has completed the hydrogenation reaction gradually moves to the top of the reaction tower. After heat exchange treatment in heat exchange section 5, it enters filtration section 4 and is filtered out by the filtration and drainage components, resulting in the discharge of the product liquid from the reaction tower. The particulate catalyst remains in the reaction tower and falls back into the agitated suspension section 6 to continue participating in the reaction, improving catalyst utilization efficiency. The bottom feeding creates an impact force on the liquid in the agitated suspension section 6, thereby enhancing the suspension effect, improving the gas-liquid mixing effect and contact reaction efficiency, improving product quality, reducing the energy required for suspension, and helping to reduce overall costs.

[0037] like Figure 1 As shown, in some embodiments, the agitation and suspension mechanism consists of several agitator blades 13 fixedly mounted on the agitator shaft 15. This achieves uniform mixing, promotes dynamic liquid agitation, and improves reaction efficiency and effectiveness.

[0038] like Figure 1 and Figure 2 and Figure 6 As shown, in some embodiments, the heat exchange coil includes a medium inlet 16 and a medium outlet 17, both of which are fixedly installed on the side wall of the heat exchange section 5. A plurality of heat exchange tubes 18 are installed between the medium inlet 16 and the medium outlet 17, and these heat exchange tubes 18 are coiled within the heat exchange section 5. This achieves heat exchange with the reaction liquid within the reaction tower to regulate the temperature and improve reaction efficiency and effectiveness. In some operating schemes, those skilled in the art can, as needed, install several temperature sensor points within the reaction tower to monitor the temperature within the tower and, in conjunction with the function of the heat exchange coil, regulate the temperature within the reaction tower to meet the requirements of the hydrogenation reaction.

[0039] like Figure 2-5As shown, in some embodiments, the agitation suspension mechanism includes several bottom rods 13.1 fixedly mounted on the agitation shaft 15 near the bottom of the agitation suspension section 6 and several top rods 13.2 fixedly mounted on the top of the agitation shaft 15. A vertically upward upright rod is fixedly mounted on the bottom rod 13.1, and an outer leaf 13.3 is fixedly mounted on the upright rod. A vertically downward hanging rod is fixedly mounted on the top rod 13.2, and an inner leaf 13.5 is fixedly mounted on the hanging rod. A first channel is formed between the inner leaf 13.5 and the outer leaf 13.3, a second channel is formed between the bottom of the inner leaf 13.5 and the upper surface of the bottom rod 13.1, and a third channel is formed between the inner leaf 13.5 and the agitation shaft 15. The first channel, the second channel, and the third channel constitute an upward-opening U-shaped channel 13.4. Improving the agitation effect ensures more uniform dynamic mixing of the liquid flow within the inner wall of the agitation suspension section 6. It also simplifies the overall structure of the agitation suspension mechanism, reducing its overall weight and energy consumption. Furthermore, it allows for more space to accommodate liquid flow and the installation of other components.

[0040] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, in some embodiments, the top rod 13.2 and the agitator shaft 15 are integrally formed at the connection point, and the bottom rod 13.1 and the agitator shaft 15 are integrally formed at the connection point; the outer blade 13.3 is provided with several reinforcing rods, and the reinforcing rods are integrally formed with the bottom rod 13.1 at the connection point; the inner blade 13.5 is provided with several reinforcing rods, and the reinforcing rods are integrally formed with the top rod 13.2 at the connection point; the agitator shaft 15, the bottom rod 13.1, the top rod 13.2, and the reinforcing rods are all solid stainless steel shafts of the same diameter. This ensures that when the agitator suspension mechanism rotates, it can provide strong support for the outer blade 13.3 and the inner blade 13.5, enhancing stability.

[0041] Based on the above embodiments, such as Figure 3 and Figure 8 As shown, in some embodiments, the heat exchange coil includes a medium inlet 16 and a medium outlet 17, both of which are fixedly installed on the side wall of the heat exchange section 5. A plurality of U-shaped tubes 23 are installed between the medium inlet 16 and the medium outlet 17. These U-shaped tubes 23 can be inserted into the agitation and suspension section 6. The agitation and suspension section 6 is provided with U-shaped channels 13.4 for arranging the U-shaped tubes 23 and for accommodating the agitation of the agitation and suspension mechanism. This allows the heat exchange section 5 and the agitation and suspension section 6 to overlap, enabling more accurate temperature control within the agitation and suspension reaction section 6, especially during challenging reaction phases, thus improving product quality.

[0042] like Figure 4 and Figure 7 As shown, in some embodiments, the heat exchange coil includes a medium inlet 16 and a medium outlet 17, both of which are fixedly installed on the side wall of the heat exchange section 5. A plurality of heat exchange tubes 18 and U-shaped tubes 23 are installed between the medium inlet 16 and the medium outlet 17. The heat exchange tubes 18 are coiled within the heat exchange section 5. The U-shaped tubes 23 can be inserted into the agitation and suspension section 6, which has U-shaped channels 13.4 for arranging the U-shaped tubes 23 and for agitating the suspension mechanism. This allows for partial overlap between the heat exchange section 5 and the agitation and suspension section 6, enabling temperature regulation and control while agitating the suspension reaction within the agitation and suspension section 6, thus improving the stability of temperature regulation. It also allows the reaction liquid to continue heat exchange after rising into the heat exchange section 5, enhancing the temperature regulation and control effect and contributing to precise temperature control, thereby improving product quality.

[0043] like Figure 9 As shown, in some embodiments, the U-shaped tube 23 is provided with a connecting pipe 24, and the connecting pipe 24 is provided with a shaft position 25 for the agitator shaft 15. The shaft position 25 is a semi-circular arc around which the agitator shaft 15 can bypass. This allows the heat exchange medium to be connected between the medium inlet 16 and the medium outlet 17 while avoiding any impact on the rotation of the agitator shaft 15, thus improving the flexibility of the device.

[0044] like Figure 10 As shown, in some embodiments, the U-shaped tube 23 is provided with a connecting tube 24, and the connecting tube 24 is provided with a shaft position 25 for the agitator 15. The shaft position 25 is a circular hole, and a rotating component 26 (bearing) is installed in the circular hole. The agitator 15 is installed through the rotating component 26 (bearing). This ensures the flexibility of the agitator 15 in rotation.

[0045] In some embodiments, the number of bottom rods 13.1 and top rods 13.2 are equal, and one bottom rod 13.1 is equipped with an outer blade 13.3, while one top rod 13.2 is equipped with an inner blade 13.5. This helps to improve the stirring effect.

[0046] In some embodiments, there are at least three bottom rods 13.1, which are evenly mounted on the agitator shaft 15.

[0047] like Figure 1 and Figure 2 and Figure 3 and Figure 4As shown, in some embodiments, the filtration and drainage assembly includes a drainage pipe 20 fixedly installed on the side wall of the filtration section 4, a support frame 22 fixedly installed inside the filtration section 4, and several filter cylinders 19 fixedly installed on the support frame 22, wherein the filter cylinders 19 filter from the outside to the inside, and each filter cylinder 19 has a drainage port at its top; a converging pipe 21 is provided at the top of the drainage port, and the converging pipe 21 is connected to the drainage pipe 20. This allows the liquid of the reaction product to enter the interior of the filter cylinder 19 after filtration, then enter the converging pipe 21 through the top drainage port, and finally be discharged through the drainage pipe 20. This effectively prevents catalyst particles from being discharged with the product, improving product quality and efficiency. It also avoids the process of filtering and recovering the catalyst from the product and pumping it back into the reaction tower, allowing the catalyst to be directly filtered and retained in the reaction tower. This promotes the catalyst to gradually fall from the filtration section 4 into the agitated suspension section 6, enhancing the catalyst suspension effect, improving the catalytic reaction effect, and contributing to improved product quality and efficiency.

[0048] In some embodiments, the filter cartridge 19 is an integral structure with an internal support frame and a filter cloth installed on the support frame, or it is a cylindrical filter body with a nanofiltration membrane assembly structure or a microporous membrane assembly structure installed.

[0049] This invention allows for the direct addition of catalyst to the reaction tower by pumping it into the liquid undergoing hydrogenation. This device enables continuous hydrogenation production, reduces energy consumption, shortens the hydrogenation reaction cycle, and lowers costs. When shutdown for cleaning is required, the cleaning liquid can be directly discharged through the inlet.

[0050] like Figure 1-4 As shown, in some embodiments, the defoaming and venting assembly includes a wire mesh defoamer 3 installed within the venting section and an exhaust pipe 1 disposed at the top of the venting section; the exhaust pipe 1 is provided with a circulation interface 2, which communicates with the circulation pipe 8, and a circulation pump 7 is provided between the circulation interface 2 and the circulation pipe 8. This enables the recycling of gas (hydrogen) and reduces gas costs.

[0051] For any other matters not covered in this invention, they can be addressed by referring to existing technologies or common knowledge known to those skilled in the art, and by using conventional technical means.

Claims

1. A vertical solid catalyst catalytic gas-liquid reaction device with a stirring and suspension mechanism, characterized in that, The reaction tower is divided into an evacuation section, a filtration section (4), a heat exchange section (5), an agitation and suspension section (6), and a stabilization section from top to bottom. The stabilization section has a vertically upward installation channel (11) at its center. The installation channel (11) is equipped with several sealed bearings (12). The sealed bearings (12) are equipped with an agitator (15). The top of the agitator (15) is located in the agitation and suspension section (6). The bottom of the agitator (15) extends out of the stabilization section and is connected to a motor (9). The stabilization section is equipped with an air inlet pipe (10) and a circulation pipe (8). The agitation and suspension section (6) is equipped with a liquid inlet (14) near the bottom side wall. The agitation and suspension section (6) is equipped with an agitation and suspension mechanism connected to the agitator (15). The heat exchange section (5) is equipped with a heat exchange coil. The filtration section (4) is equipped with a filtration and drainage assembly. The evacuation section is equipped with a defoaming and evacuation assembly.

2. The vertical solid catalyst catalytic gas-liquid reaction device with a stirring suspension mechanism as described in claim 1, characterized in that, The agitation suspension mechanism consists of several agitation blades (13) fixedly installed on the agitation shaft (15).

3. The vertical solid catalyst catalytic gas-liquid reaction device with a stirring suspension mechanism as described in claim 1, characterized in that, The agitation suspension mechanism includes several bottom rods (13.1) near the bottom of the agitation suspension section (6) and fixedly installed on the agitation shaft (15) and several top rods (13.2) fixedly installed on the top of the agitation shaft (15). A vertically upward upright rod is fixedly installed on the bottom rod (13.1), and an outer leaf (13.3) is fixedly installed on the upright rod. A vertically downward hanging rod is fixedly installed on the top rod (13.2), and an inner leaf (13.5) is fixedly installed on the hanging rod. A first channel is formed between the inner leaf (13.5) and the outer leaf (13.3). A second channel is formed between the bottom of the inner leaf (13.5) and the upper surface of the bottom rod (13.1). A third channel is formed between the inner leaf (13.5) and the agitation shaft (15). The first channel, the second channel and the third channel constitute an upward-opening U-shaped channel (13.4).

4. The vertical solid catalyst catalytic gas-liquid reaction device with a stirring suspension mechanism as described in claim 3, characterized in that, The number of bottom rods (13.1) and top rods (13.2) are equal, and an outer leaf (13.3) is installed on one bottom rod (13.1) and an inner leaf (13.5) is installed on one top rod (13.2).

5. The vertical solid catalyst catalytic gas-liquid reaction device with a stirring suspension mechanism as described in claim 3 or 4, characterized in that, There are at least three bottom rods (13.1), which are evenly installed on the stirring shaft (15).

6. The vertical solid catalyst catalytic gas-liquid reaction device with a stirring suspension mechanism as described in claim 1, characterized in that, The heat exchange coil includes a medium inlet (16) and a medium outlet (17), and both the medium inlet (16) and the medium outlet (17) are fixedly installed on the side wall of the heat exchange section (5); a number of heat exchange tubes (18) and / or U-shaped tubes (23) are installed between the medium inlet (16) and the medium outlet (17), and the heat exchange tubes (18) are coiled and installed in the heat exchange section (5); the U-shaped tubes (23) can be inserted into the agitation and suspension section (6), and the agitation and suspension section (6) is provided with U-shaped channels (13.4) for the U-shaped tubes (23) to be laid out and to meet the agitation of the agitation and suspension mechanism.

7. The vertical solid catalyst catalytic gas-liquid reaction device with a stirring suspension mechanism as described in claim 6, characterized in that, The U-shaped tube (23) is provided with a connecting tube (24), and the connecting tube (24) is provided with a shaft position (25) for the stirring shaft (15).

8. The vertical solid catalyst catalytic gas-liquid reaction device with a stirring suspension mechanism as described in claim 7, characterized in that, The shaft position (25) is a semi-circular arc around which the agitator (15) can pass; or the shaft position (25) is a circular hole, and a rotating component (26) is installed in the circular hole, through which the agitator (15) is installed.

9. The vertical solid catalyst catalytic gas-liquid reaction device with a stirring suspension mechanism as described in claim 1, characterized in that, The filtration and drainage assembly includes a drainage pipe (20) fixedly installed on the side wall of the filtration section (4), a support frame (22) fixedly installed inside the filtration section (4), a plurality of filter cylinders (19) fixedly installed on the support frame (22), and the filter cylinders (19) filter from the outside to the inside, and the top of the filter cylinders (19) is provided with a drainage port; the top of the drainage port is provided with a converging pipe (21), and the converging pipe (21) is connected to the drainage pipe (20).

10. The vertical solid catalyst catalytic gas-liquid reaction device with a stirring suspension mechanism as described in claim 1, characterized in that, The defoaming and venting assembly includes a wire mesh defoaming component (3) installed in the venting section and an exhaust pipe (1) set at the top of the venting section; the exhaust pipe (1) is provided with a circulation interface (2), the circulation interface (2) is connected to the circulation pipe (8), and a circulation pump (7) is provided between the circulation interface (2) and the circulation pipe (8).

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