S-shaped fluid flow path device for catalyzing gas-liquid reaction by solid catalyst

Abstract

The invention relates to the technical field of gas-liquid reaction devices, in particular to an S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction, which is characterized in that a filter plate is arranged to prevent a catalyst from flowing out of a product outlet, so that the reaction efficiency is improved, and meanwhile, the catalyst can be prevented from being accumulated at a raw material inlet to influence the feeding efficiency; a reaction cavity is formed between the adjacent filter plates, a plurality of hollow heat exchange plates are arranged in the reaction cavity in the fluid flowing direction, the heat exchange plates are alternately arranged at the top and the bottom of the reaction cavity, and the adjacent heat exchange plates are communicated outside the reaction body, so that a reaction raw material liquid forms an S-shaped or wave-shaped flowing path after entering the reaction cavity, the reaction retention time is prolonged, and the reaction efficiency is improved. The reaction effect and efficiency are improved, and the quality of a reaction product is favorably improved; meanwhile, continuous gas-liquid reaction is realized, and the gas-liquid reaction treatment efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of gas-liquid reaction apparatus technology, and more particularly to an S-shaped fluid flow path apparatus for gas-liquid reaction catalyzed by a solid catalyst. 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 pump 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. Therefore, a large number of devices for gas-liquid catalytic reactions have been developed in the existing technology.

[0003] For example, patent number 202123424994.4 discloses a VOCs waste gas treatment spray tower with catalytic ozone oxidation function. The spray tower includes, from top to bottom, a spray device, a gas distribution device, a catalyst support plate, and an ozone aeration disc. The catalyst support plate supports the catalytic ozone oxidation catalyst, and the gas distribution device on its surface ensures uniform gas distribution. The spray device is connected to an absorbent circulation tank via an absorbent feed pump, and the absorbent circulation tank is connected back to the bottom of the VOCs waste gas spray tower via the absorbent circulation pump. A waste gas inlet and an ozone inlet are located on one side of the bottom of the VOCs waste gas spray tower. A pipe at the bottom of the ozone aeration disc passes through the ozone inlet and is connected to an ozone generator. An ozone tail gas destroyer is connected to the top of the VOCs waste gas spray tower.

[0004] For example, patent number 202322376766.7 discloses a continuous flow loop system suitable for gas-liquid-solid reactions. Specifically, it discloses a solid catalyst baffle installed in the reactor, which fluidizes the solid catalyst particles, increases the reaction contact area, effectively improves the reaction rate, avoids circulation pump failure caused by solid catalyst particles flowing through the circulation pump, and avoids the deposition of solid catalyst particles at the bottom of the reactor, which would cause pipeline blockage.

[0005] For example, patent number 202022005854.2 discloses a device for continuous recycling of solid catalysts during hydrogenation reactions. The continuous settling tank is divided into an upper tank and a lower tank. The upper tank has a feed pipe extending from the inlet to the lower tank. The lower tank, with a higher content of solid catalyst, is equipped with a side-entry stirring device. While the side-entry stirring operates, it is important to minimize disturbance to the upper layer of clear liquid in the upper tank, ensuring continuous separation of the liquid product and solid catalyst. The solid catalyst in the lower tank will not deposit or clog under low-speed stirring conditions. This allows the solid-liquid mixture containing a significant amount of solid catalyst to smoothly exit from the bottom of the continuous settling tank, enabling it to be recycled back to the hydrogenation reactor via a circulation pump. Simultaneously, it ensures that the upper layer of clear product in the upper tank retains a small amount of solid catalyst, reducing the load on the filtration equipment during subsequent processing of the clear product.

[0006] For example, patent application number 202410706562.1 discloses a circulating continuous hydrogenation reaction device, including a static mixer, a reactor, a buffer tank, a gas-liquid separator, a collection tank, a catalyst filter, a recovery tank, a hydrogen tank, a catalyst tank, and a feedstock tank. The static mixer includes a new catalyst inlet, a recovered catalyst inlet, a feedstock inlet, and an outlet. The feedstock tank and the catalyst tank are connected to the feedstock inlet and the new catalyst inlet, respectively, via corresponding pumps. The outlet of the static mixer is connected to the inlet of the reactor. The hydrogen tank is connected to the gas inlet of the reactor via a pipeline. The outlet of the reactor is connected to the buffer tank and the gas-liquid separator via pipelines. The gas phase of the gas-liquid separator produces the product, and the liquid phase enters the collection tank. The collection tank is connected to the catalyst filter via a pump, and the recovery tank is connected to the recovered catalyst inlet via a pump. This invention achieves efficient mixing of feedstock and catalyst, continuous reaction, effective separation of products, and catalyst recovery, thereby reducing production costs.

[0007] However, existing gas-liquid-solid catalyst reaction devices still have many drawbacks: ① It is difficult to make the solid particle catalyst circulate and flow dynamically within the reaction device, resulting in uneven distribution of the solid particle catalyst, or even deposition on the baffles, leading to low catalytic reaction efficiency; ② The solid particle catalyst is discharged with the liquid phase product and then filtered and reused, resulting in a short effective utilization cycle and poor utilization efficiency; ③ During continuous feeding reaction, multi-point gas supply is not achieved, resulting in uneven gas distribution, which easily causes local gas blockage, resulting in high impurities and poor quality in the product.

[0008] Based on the aforementioned technical deficiencies, our research team, building upon our previous project research on improving catalyst utilization efficiency through solid catalysts catalyzing gas-liquid reactions in continuous flow reaction systems, has conducted research on gas-liquid reaction devices. We have developed a research and development system that includes horizontal S-shaped flow channels, horizontal swirling flow channels, tower-type cyclone separation, and vertical agitated suspension filtration. By considering the principles of gas-liquid reactions and continuous production, we have provided a new device for the field of gas-liquid reactions. Summary of the Invention

[0009] This invention provides an S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction. It has a simple structure, enables continuous production, and promotes the wavy flow path of the reaction liquid raw materials in the reaction body, thereby improving reaction efficiency and effect and helping to improve product quality.

[0010] The specific technical solution is as follows:

[0011] An S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction includes a reaction body with a raw material inlet at the left end and a product outlet at the right end. A stirring shaft is installed inside the reaction body, with one end extending out of the reaction body and connected to a motor. Filter plates are installed at both ends of the reaction body, with a reaction chamber between adjacent filter plates. Several hollow heat exchange plates are installed within the reaction chamber along the fluid flow direction, alternating between the top and bottom of the chamber, with adjacent heat exchange plates connected externally. A medium outlet is located on the heat exchange plate at the left end of the reaction body, and a medium inlet is located on the heat exchange plate at the right end. Sealed bearings are installed at the contact points between the stirring shaft and the filter plates, heat exchange plates, and reaction body. At least one stirring blade is installed on the stirring shaft between adjacent heat exchange plates. A catalyst inlet and exhaust pipe are located between adjacent heat exchange plates at the top of the reaction chamber. An air inlet and cleaning port are located between adjacent heat exchange plates at the bottom of the reaction chamber.

[0012] By incorporating filter plates, catalyst leakage from the product outlet is prevented, thus improving reaction efficiency. This also prevents catalyst buildup at the feed inlet, which would negatively impact feed efficiency. A reaction chamber is formed between adjacent filter plates, containing several hollow heat exchange plates arranged along the fluid flow direction. These heat exchange plates are alternately positioned at the top and bottom of the reaction chamber, with adjacent plates connected externally. This allows the reactant liquid to flow in an S-shaped or wavy path after entering the reaction chamber, increasing the reaction residence time, improving reaction efficiency and effectiveness, and contributing to higher product quality. Furthermore, continuous gas-liquid reaction is achieved, enhancing gas-liquid reaction processing efficiency.

[0013] To enhance the reaction effect and improve product quality, preferably, the reaction chamber is provided with several filter plates, with at least one heat exchange plate and at least one stirring blade between adjacent filter plates, and adjacent filter plates constitute a reaction unit; at the top of the reaction unit, catalyst inlets and exhaust pipes are provided between the filter plates and heat exchange plates, and between adjacent filter plates; at the bottom of the reaction unit, cleaning ports and air inlets are provided between the filter plates and heat exchange plates, and between adjacent filter plates.

[0014] To improve the thoroughness of gas utilization by realizing gas circulation reaction, preferably, a circulation component is provided between the exhaust pipe and the intake pipe, and an air pump is provided on the intake pipe.

[0015] To ensure that the gas enters the reaction chamber and forms a large number of microbubbles in the reaction liquid, preferably, the end of the air inlet pipe located within the reaction body is equipped with a distribution head, and the distribution head has several micropores. The distribution head is designed with reference to the structure of a bathroom heater.

[0016] More preferably, the circulation assembly includes a circulation pump located between the exhaust pipe and the intake pipe; or the circulation assembly connects the exhaust pipe to the intake end of the air pump.

[0017] To simplify installation and achieve centralized collection of exhaust gases, preferably, a gas collecting pipe is provided at the top of the exhaust pipe, a dispersing pipe is provided at the bottom of the intake pipe, a circulation assembly is provided between the gas collecting pipe and the dispersing pipe, and a gas pump is provided on the dispersing pipe.

[0018] To avoid a situation where connecting a circulation component to one end of the gas collecting pipe results in a faster gas outflow rate near the connection point in the reaction body, while the gas outflow rate at other exhaust pipe connections is slower, thus affecting the overall uniformity of gas distribution in the reaction body, it is preferable that a gas collecting port is provided at the middle of the top of the gas collecting pipe, and the gas collecting port is connected to the circulation component.

[0019] To improve the effect and efficiency of heat exchange and temperature regulation, preferably, the walls of the reaction body are double-layered, and a heat exchange cavity is formed between the double-layered walls of the reaction body, and the heat exchange cavity is provided with a medium outlet and a medium inlet; adjacent heat exchange plates are connected in the heat exchange cavity.

[0020] More preferably, the reaction body has a medium cavity inside its wall, the medium cavity is correspondingly arranged with the heat exchange plate, and the medium cavity is spiraled along the wall of the reaction body to make adjacent medium cavities communicate; the heat exchange plate is fixedly connected to the medium cavity at the inner end of the wall of the reaction body, and the heat exchange plate communicates with the medium cavity.

[0021] Preferably, the heat exchange plate is provided with a partition, and the partition divides the heat exchange plate into a left medium tank and a right medium tank that are interconnected; the heat exchange plate is provided with a connector.

[0022] Preferably, the heat exchange plate is provided with heat exchange fins.

[0023] Compared with the prior art, the technical effects of this invention are reflected in:

[0024] This invention features a simple structure, is easy to install, and has low industrialization and promotion costs. It can also realize continuous production of gas-liquid reactions, improve gas-liquid reaction efficiency, extend the residence time of raw materials, improve reaction effect and efficiency, ensure product quality, and reduce catalyst utilization costs.

[0025] This invention enables the catalyst to be uniformly distributed within the catalytic reaction chamber, thereby improving the efficiency and effectiveness of the catalytic reaction.

[0026] This invention creates reaction systems applicable to hydrogenation reactions of liquid organic compounds, liquid absorption tail gas treatment, etc., to meet the needs of gas recycling or treatment, improve the thoroughness of gas utilization or treatment, reduce costs, and increase efficiency.

[0027] This invention enables multi-level contact reactions between reactant liquids, and the reactant liquids flow in a wave-shaped or S-shaped path within the reaction body, improving the completeness of the reaction and helping to increase the yield and quality of the product. Attached Figure Description

[0028] To facilitate a full understanding of the technical solution created by those skilled in the art, the following description is provided in conjunction with the technical solution content and the accompanying drawings. The descriptions in the following drawings are for illustrative purposes only and are not intended to limit the technical solution created by the present invention.

[0029] Figure 1 An overall structural diagram is created for this invention.

[0030] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the reactive body in the middle section (AA direction).

[0031] Figure 3 for Figure 2 Another embodiment of the structural diagram.

[0032] Figure 4 for Figure 1 Another embodiment of the structural diagram.

[0033] Figure 5 A schematic diagram of the overall structure of another embodiment of the present invention is provided.

[0034] Figure 6 for Figure 5 Schematic diagram of the BB-directed cross-sectional structure of the intermediate reactant.

[0035] Figure 7 for Figure 5 Another embodiment of the structural diagram.

[0036] Figure 8 for Figure 6 Another embodiment of the structural diagram.

[0037] Figure 9 for Figure 8 A partially enlarged structural diagram.

[0038] Figure 10 for Figure 6 Another embodiment of the structural diagram.

[0039] Figure 11 for Figure 6 Additionally, a structural diagram is provided.

[0040] Figure 12 for Figure 11 A partially enlarged structural diagram.

[0041] Figure 13 This is a schematic diagram of the heat exchange fin structure.

[0042] Figure 14 for Figure 13 A partially enlarged structural diagram.

[0043] Figure 15 for Figure 13 CC-direction sectional view.

[0044] 1-Reactor body 2-Product outlet 3-Raw material inlet 4-Stirring shaft 5-Motor 6-Exhaust pipe 7-Gas collection pipe 8-Catalyst inlet 9-Circulating air pump 10-Dispersion pipe 11-Cleaning port 12-Air pump 13-Inlet pipe 14-Sealed bearing 15-Filter plate 16-Stirring blade 17-Heat exchange plate 18-Gas collection port 19-Heat exchange chamber 20-Medium outlet 21-Medium inlet 22-Connector 23-Medium chamber 24-Baffle 25-Heat exchange fins 23.1-Inlet end 23.2-Outlet end 17.1-Left medium tank 17.2-Right medium tank Detailed Implementation

[0045] 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 and accompanying drawings. 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.

[0046] like Figure 1-15In some embodiments, the S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction includes a reaction body 1, with a raw material inlet 3 at the left end and a product outlet 2 at the right end; a stirring shaft 4 is installed inside the reaction body 1, with one end of the stirring shaft 4 extending out of the reaction body 1 and connected to a motor 5; the liquid to be reacted with the gas is pumped in from the raw material inlet 3, so that the liquid raw material enters the reaction body 1, and the stirring shaft 4 is rotated under the power provided by the motor 5; filter plates 15 are provided at both the left and right ends of the reaction body 1, and adjacent filter plates 15 are... The space between 5 is a reaction chamber; within the reaction chamber, several hollow heat exchange plates 17 (e.g., 1, 2, 3, 4, 5, 6, 7, 8, 9, etc.) are arranged along the fluid flow direction. These heat exchange plates 17 are alternately arranged at the top and bottom of the reaction chamber, and adjacent heat exchange plates 17 are connected outside the reaction body 1. A medium outlet 20 is provided on the heat exchange plate 17 located at the left end of the reaction body, and a medium inlet 21 is provided on the heat exchange plate 17 located at the right end of the reaction body. The heat exchange medium is transported to the hollow heat exchange plates 17 through the medium inlet 21, ensuring that the heat exchange medium flows between adjacent heat exchange plates. After internal heat exchange, the liquid material flows out from the medium outlet 20, thus achieving heat exchange and temperature regulation of the liquid raw material in the reaction body 1. Sealed bearings 14 are provided at the contact points between the stirring shaft 4 and the filter plate 15, heat exchange plate 17, and reaction body 1, effectively reducing the risk of liquid raw material leakage and ensuring free rotation of the stirring shaft 4. At least one stirring blade 16 is provided on the stirring shaft 4 between adjacent heat exchange plates 17 to ensure stirring effect. A catalyst inlet 8 and an exhaust pipe 6 are provided at the top of the reaction chamber between adjacent heat exchange plates 17, allowing the gas added to the reaction to contact the liquid raw material and participate in the reaction within the reaction body 1. The gas escapes from the exhaust pipe 6. At the same time, it is possible to add or replenish the catalyst from the catalyst inlet 8 (for example, adding palladium on carbon catalyst with a particle size of about 1 mm to the catalytic reaction system of hydrogenation of liquid organic compound cyclohexene) to meet the catalyst requirements of the reaction system. An air inlet pipe 13 and a cleaning port 11 are provided between the adjacent heat exchange plates 17 at the bottom of the reaction chamber to allow gas to be introduced into the reaction body 1 to react with the liquid raw materials. At the same time, it allows cleaning waste liquid and waste residue to be discharged through the cleaning port 11 during equipment cleaning. When the gas is introduced to participate in the reaction, the cleaning port 11 is always closed.

[0047] This invention utilizes filter plates 15 located at the left and right ends of the reaction body 1, such as... Figure 2 As shown, the filter plate 15 on the left is located at the raw material inlet 3, and the filter plate 15 on the right is located at the product outlet 2. The pore size of the filter plate 15 is large enough to allow liquid raw materials to pass through while restricting the passage of solid catalyst. For example, when using a palladium-on-carbon catalyst with a particle size of 1 mm to catalyze the hydrogenation reaction of liquid organic matter (cyclohexene), the pore size of the filter plate 15 is <1 mm, or even less than 0.5 mm. Furthermore, the filter plates 15 form a reaction chamber, and within the reaction chamber, several hollow heat exchange plates 17 are arranged along the fluid flow direction (e.g., such as...). Figure 3 A heat exchange plate 17 is provided, and another heat exchange plate 17 is provided at the product outlet 2 end, or two heat exchange plates 17 are provided in the catalytic reaction chamber, so that the raw material liquid flows in an S-shape after entering the reaction body 1; for example: Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 , Figure 11 As shown, six heat exchange plates 17 are set, but three, four, five, seven, eight, or more can also be set (so that the raw material liquid flows in an S-shape after entering the reaction body 1). The heat exchange plates 17 are alternately arranged at the top and bottom of the reaction chamber, and adjacent heat exchange plates 17 are connected outside the reaction body 1. This allows for heat exchange and temperature regulation inside the reaction body 1 by introducing a heat exchange medium. At the same time, the arrangement of the heat exchange plates 17 in the reaction chamber ensures that the liquid raw material, after entering the reaction body 1 from the raw material inlet 3, forms an S-shaped flow path within the reaction body 1, improving the reaction effect. Figure 1 and Figure 2 As shown, a catalyst inlet 8 and an exhaust pipe 6 are provided between adjacent heat exchange plates 17 at the top of the reaction chamber, and an air inlet pipe 13 and a cleaning port 11 are provided between adjacent heat exchange plates 17 at the bottom of the reaction chamber. This ensures that the catalyst, after being added, is located within the reaction chamber and, under the action of the filter plate 15, avoids accumulating and clogging at the raw material inlet 3. It also prevents the catalyst from being discharged with the product from the product outlet 2, thus improving catalyst utilization, reducing catalyst loss, and lowering the cost of using solid catalysts in gas-liquid reactions. The above-mentioned technical solution created by this invention meets the requirements of continuous gas-liquid feed-out reaction, realizes continuous production, and, through the synergistic design of the filter plate and heat exchange plate, reduces solid catalyst loss, promotes an S-shaped flow path for fluid flow, extends residence time, improves product quality, enhances reaction efficiency and effect, and reduces reaction costs.

[0048] Removing filter plate 15 revealed that after the catalyst was added, a large amount of it flowed out from product outlet 2 along with the fluid (liquid feedstock). This necessitated continuous replenishment of the solid catalyst as the liquid feedstock was introduced, increasing the catalyst reserve. Furthermore, the solid catalyst in the product needed to be filtered out separately, activated, and then placed back into reaction body 1, resulting in a longer operating cycle and a lower catalyst yield. Comparative experiments showed that removing filter plate 15 resulted in a loss rate exceeding 20% ​​for the same product quality, leading to higher catalyst costs. Installing heat exchange plate 17 separately at the top of the reaction chamber for heat exchange resulted in a decrease in product purity; for example, in the hydrogenation reaction of cyclohexene, the purity of cyclohexane obtained was approximately 87%. However, the arrangement of filter plate 15 and heat exchange plate 17 within reaction body 1 in this invention achieves a catalyst loss rate of <2%, and the purity of the gas-liquid reaction product can reach over 98%.

[0049] When using the apparatus of this invention, a solid catalyst is added into the reaction chamber through the catalyst inlet 8, while a liquid raw material is pumped into the reaction body 1 through the raw material inlet 3. The liquid raw material passes through the filter plate 15 and enters the reaction chamber to contact the catalyst. The required gas is then introduced into the reaction chamber through the gas inlet pipe 13. Under the action of the catalyst, the liquid raw material reacts with the gas. The stirring action of the stirring shaft 4 causes the liquid raw material to flow from the raw material inlet 3 to the product outlet 2. The temperature inside the reaction body 1 is adjusted by the action of the heat exchange plate 17. Meanwhile, the heat exchange plates 17 are alternately arranged at the top and bottom of the reaction chamber. For example, when two heat exchange plates 17 are arranged, the liquid raw material flows in an S-shaped flow path to achieve continuous reaction. For example, when three or more heat exchange plates 17 are arranged, the reaction liquid raw material flows in a wave-shaped flow path (multiple sets of S-shaped flow paths are connected) to achieve continuous reaction, which improves reaction efficiency and effect. Excess gas in the reaction process is discharged through the exhaust pipe 6. When the device needs to be cleaned after use, the cleaning slag and liquid can be discharged through the cleaning port 11.

[0050] like Figure 1 and Figure 5 As shown, the gas discharged from the exhaust pipe 6 can be recycled into the intake pipe 13 via the circulation pump 9; or as... Figure 4 and Figure 7 As shown, the gas discharged from the exhaust pipe 6 can be recycled into the intake pipe 13 through a connection with the intake end of the air pump 12, thus achieving recycling; that is, in some embodiments, such as Figure 1 and Figure 5 As shown, a circulation assembly is provided between the exhaust pipe 6 and the intake pipe 13, and an air pump 12 is provided on the intake pipe 13; the circulation assembly is a circulation air pump 9 provided between the exhaust pipe 6 and the intake pipe 13. In some embodiments, such as Figure 4 and Figure 7 As shown, a circulation assembly is provided between the exhaust pipe 6 and the intake pipe 13, and an air pump 12 is provided on the intake pipe 13; the circulation assembly connects the exhaust pipe 6 and the intake end of the air pump 12.

[0051] In some embodiments, the end of the air inlet pipe 13 located within the reaction body 1 is provided with a distribution head, and the distribution head has several micropores. For example, referring to the design of a bathroom heater, the air inlet pipe 13 is used instead of the water inlet pipe of the bathroom heater, similar to setting several tiny air holes on the head of the bathroom heater. This allows the gas in the air inlet pipe 13 to enter the distribution head and then be distributed within the reaction body 1 through the several micropores on the distribution head. This ensures that the gas fully contacts the liquid material within the reaction body 1, and the distribution of the several micropores allows a large number of bubbles to form, enabling the microbubbles to be suspended within the reaction body 1. This structural design helps to improve the efficiency and effect of the gas-liquid contact reaction.

[0052] like Figure 1 , Figure 4 , Figure 5 , Figure 7 As shown, in some embodiments, a gas collecting pipe 7 is provided at the top of the exhaust pipe 6, a dispersing pipe 10 is provided at the bottom of the intake pipe 13, a circulation assembly is provided between the gas collecting pipe 7 and the dispersing pipe 10, and an air pump 12 is provided on the dispersing pipe 10. This achieves centralized collection of the discharged gas and simplifies the installation process.

[0053] like Figure 5 and Figure 7 As shown, in some embodiments, a gas collecting port 18 is provided at the middle of the top of the gas collecting pipe 7, and the gas collecting port 18 is connected to the circulation component. This enables centralized collection and discharge from the central gas collecting port 18, reducing the difficulty of the top exhaust process and simplifying installation; to a certain extent, it avoids the defect that the gas in the reaction body 1 near the connection point is quickly extracted when the gas discharged from the exhaust pipe is circulated by the circulation component.

[0054] like Figure 8 As shown, in some embodiments, the reaction chamber is provided with several filter plates 15, and at least one heat exchange plate 17 and at least one stirring blade 16 are provided between adjacent filter plates 15, and adjacent filter plates 15 constitute a reaction unit; at the top of the reaction unit, a catalyst inlet 8 and an exhaust pipe 6 are provided between the filter plate 15 and the heat exchange plate 17, and between adjacent filter plates 15; at the bottom of the reaction unit, a cleaning port 11 and an air inlet pipe 13 are provided between the filter plate 15 and the heat exchange plate 17, and between adjacent filter plates 15. Dividing the reaction chamber into several reaction units improves the contact effect between the catalyst and the liquid raw material. The filter plates used in this invention are conventional filter plates purchased from the market, such as filter plates with nanofiltration membrane modules or filter plates with microporous membrane modules; as long as they can meet the requirement that the fluid (liquid raw material, liquid product) can be filtered through while the solid catalyst is blocked.

[0055] like Figure 10As shown, in some embodiments, the walls of the reaction body 1 are double-layered, forming a heat exchange cavity 19 between the double-layered walls. The heat exchange cavity 19 is provided with a medium outlet 20 and a medium inlet 21; adjacent heat exchange plates 17 are connected within the heat exchange cavity 19. After the heat exchange plates 17 are installed in the heat exchange cavity 19 via connectors 22, the heat exchange plates 17 are connected under the action of the heat exchange cavity 19. The heat exchange medium is introduced through the medium inlet 21, and after heat exchange within the heat exchange plates 17, it flows through the heat exchange cavity 19 and exits through the medium outlet 20, thus achieving heat exchange and regulating the temperature within the reaction body 1 to meet the heat requirements of the gas-addition reaction. The heat exchange medium is a heated medium when heating is required and a cooled medium when cooling is required. It can be water, oil, etc., depending on the type of gas-liquid contact reaction using this device.

[0056] like Figure 11 As shown, in some embodiments, a medium cavity 23 is provided within the wall of the reaction body 1. The medium cavity 23 is correspondingly arranged with the heat exchange plate 17, and the medium cavity 23 spirals along the wall of the reaction body 1, allowing adjacent medium cavities 23 to communicate. The heat exchange plate 17 is located inside the wall of the reaction body 1 and is fixedly connected to the medium cavity 23, and the heat exchange plate 17 communicates with the medium cavity 23. This allows the heat exchange medium to enter the heat exchange plate 17 through the medium cavity 23 and achieve heat exchange through the communication of the medium cavity 23, thus meeting the temperature regulation requirements. Figure 11 , Figure 12 , Figure 13 and Figure 15 As shown, in some embodiments, the heat exchange plate 17 is provided with a partition 24, which divides the heat exchange plate 17 into a left medium tank 17.1 and a right medium tank 17.2; the heat exchange plate 17 is provided with a connector 22. When the heat exchange plate 17 is installed in the reaction body 1 through the connector 22, the connector 22 forms a shape within the medium cavity 23 as shown in the figure. Figure 12 The structure shown divides the medium cavity 23 into an inlet end 23.1 and an outlet end 23.2 under the action of the partition 24. The inlet end 23.1 is connected to the right medium tank 17.2, and the outlet end 23.2 is connected to the left medium tank 17.1. Figure 15 As shown, the top of the partition 24 and the heat exchange plate 17 (with attachment) Figure 15 There is a connection between the left medium tank 17.1 and the right medium tank 17.2, which connects them to meet the heat exchange requirements. Figure 15 As shown, in some embodiments, the partition 24 is provided with a row of exchange holes from the bottom end to the top end of the heat exchange plate 17, and the exchange holes gradually increase in size from the bottom end to the top end. The exchange holes connect the left medium tank 17.1 and the right medium tank 17.2 to meet the heat exchange medium exchange flow requirements.

[0057] like Figure 14 As shown, in some embodiments, the heat exchange plate 17 is provided with heat exchange fins 25 to improve the heat exchange effect.

[0058] For any matters not covered in this invention, conventional technical means can be used by referring to existing technology or common knowledge known to those skilled in the art. For example, this invention can be used in hydrogenation reactions during organic chemical reactions, that is, as a hydrogenation reaction device to achieve continuous hydrogenation reactions; it can also be used in tail gas treatment devices that use liquid absorption to achieve cyclic and continuous tail gas treatment. For structural components not shown in the accompanying drawings, those skilled in the art can adjust and set them as needed, which are considered conventional technical adjustments. For example: Figure 8 As shown, when no corresponding air inlet pipe, cleaning port, exhaust pipe, catalyst inlet, or other components are provided in the narrow space between the heat exchange plate 17 and the filter plate 15, those skilled in the art can adjust and adaptively add them as needed to meet the corresponding equipment structure requirements. For example, multiple temperature sensor points can be arranged inside the reaction body 1 to monitor the temperature inside the reaction body 1, and then the heat exchange plate can be used to regulate the temperature inside the reaction body 1.

Claims

1. An S-shaped fluid flow path device for catalyzing gas-liquid reactions with a solid catalyst, characterized in that, The reaction body (1) includes a raw material inlet (3) at the left end and a product outlet (2) at the right end; a stirring shaft (4) is provided inside the reaction body (1), and one end of the stirring shaft (4) extends out of the reaction body (1) and is connected to an electric motor (5); filter plates (15) are provided at both the left and right ends inside the reaction body (1), and the reaction chamber is between adjacent filter plates (15); several hollow heat exchange plates (17) are provided inside the reaction chamber along the direction of fluid flow, and the heat exchange plates (17) are alternately arranged at the top and bottom of the reaction chamber, and adjacent heat exchange plates (17) are connected outside the reaction body (1); A medium outlet (20) is provided on the heat exchange plate (17) located at the left end of the reactor body, and a medium inlet (21) is provided on the heat exchange plate (17) located at the right end of the reactor body; a sealed bearing (14) is provided at the contact points between the stirring shaft (4) and the filter plate (15), the heat exchange plate (17) and the reactor body (1); at least one stirring blade (16) is provided on the stirring shaft (4) between adjacent heat exchange plates (17); a catalyst inlet (8) and an exhaust pipe (6) are provided between adjacent heat exchange plates (17) at the top of the reaction chamber; an air inlet pipe (13) and a cleaning port (11) are provided between adjacent heat exchange plates (17) at the bottom of the reaction chamber.

2. The S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction as described in claim 1, characterized in that, The reaction chamber is provided with several filter plates (15), and at least one heat exchange plate (17) and at least one stirring blade (16) are provided between adjacent filter plates (15), and adjacent filter plates (15) constitute a reaction unit; at the top of the reaction unit, a catalyst inlet (8) and an exhaust pipe (6) are provided between the filter plate (15) and the heat exchange plate (17) and between adjacent filter plates (15); at the bottom of the reaction unit, a cleaning port (11) and an air inlet pipe (13) are provided between the filter plate (15) and the heat exchange plate (17) and between adjacent filter plates (15).

3. The S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction as described in claim 1 or 2, characterized in that, A circulation assembly is provided between the exhaust pipe (6) and the intake pipe (13), and an air pump (12) is provided on the intake pipe (13). And / or the end of the air inlet pipe (13) located inside the reaction body (1) is provided with a distribution head, and the distribution head is provided with a plurality of micropores.

4. The S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction as described in claim 3, characterized in that, The circulation assembly is provided with a circulation pump (9) between the exhaust pipe (6) and the intake pipe (13); or the circulation assembly connects the exhaust pipe (6) to the intake end of the air pump (12).

5. The S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction as described in claim 3, characterized in that, The exhaust pipe (6) is provided with a gas collecting pipe (7) at the top, the intake pipe (13) is provided with a dispersing pipe (10) at the bottom, a circulation component is provided between the gas collecting pipe (7) and the dispersing pipe (10), and an air pump (12) is provided on the dispersing pipe (10).

6. The S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction as described in claim 5, characterized in that, The gas collecting pipe (7) has a gas collecting port (18) at the middle of its top, and the gas collecting port (18) is connected to the circulation component.

7. The S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction as described in claim 1, characterized in that, The walls of the reaction body (1) are double-layered, and a heat exchange cavity (19) is formed between the double-layered walls of the reaction body (1). The heat exchange cavity (19) is provided with a medium outlet (20) and a medium inlet (21). Adjacent heat exchange plates (17) are connected in the heat exchange cavity (19).

8. The S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction as described in claim 1, characterized in that, The reaction body (1) has a medium cavity (23) inside its wall. The medium cavity (23) is correspondingly arranged with the heat exchange plate (17), and the medium cavity (23) is spiraled along the wall of the reaction body (1) so that adjacent medium cavities (23) are connected. The heat exchange plate (17) is located inside the wall of the reaction body (1) and is fixedly connected to the medium cavity (23), and the heat exchange plate (17) is connected to the medium cavity (23).

9. The S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction as described in claim 1, 2, 7 or 8, characterized in that, The heat exchange plate (17) is provided with a partition (24), and the partition (24) divides the heat exchange plate (17) into a left medium tank (17.1) and a right medium tank (17.2) that are connected to each other; the heat exchange plate (17) is provided with a connector (22).

10. The S-shaped fluid flow path device for solid catalyst catalytic gas-liquid reaction as described in claim 1, 2, 7 or 8, characterized in that, The heat exchange plate (17) is provided with heat exchange fins (25).

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