Hydrogenation experiment table reaction kettle with double temperature control structure

Abstract

The utility model relates to the technical field of reaction kettle, concretely to a hydrogenation experiment table reaction kettle with double temperature control structure, including kettle body, the kettle body includes outer cylinder and inner cylinder, and the lower part of outer cylinder and inner cylinder inner wall all is equipped with temperature sensor, and the cavity is equipped between outer cylinder and inner cylinder, and the outer wall of inner cylinder is equipped with spiral heating pipe, and the hot oil input pipe of spiral heating pipe passes through the bottom of outer cylinder inner wall to the outside, and the oil outlet pipe of spiral heating pipe passes through the inner wall of outer cylinder to the outside, and the bottom of outer cylinder is equipped with cooling liquid input pipe with the cavity intercommunication, and the outer wall of outer cylinder and the position close to the top are equipped with liquid outlet pipe with the cavity intercommunication. The hydrogenation experiment table reaction kettle with double temperature control structure, through the synergies of spiral heating pipe and cooling liquid input pipe, can be through hot oil to the inner cylinder even heating fast, and can realize the rapid cooling through the cooling liquid injection cavity, solved the single temperature control mode adjustment slow problem.

Description

Technical Field

[0001] This utility model relates to the field of reaction vessel technology, specifically a hydrogenation experimental platform reaction vessel with a dual temperature control structure. Background Technology

[0002] The hydrogenation experimental reactor is an experimental device specifically designed for hydrogenation reactions, widely used in chemical synthesis, materials science, and catalysis. This reactor provides the necessary conditions for hydrogenation reactions by controlling the temperature and pressure of the reactants, achieving efficient conversion and good selectivity. Hydrogenation reactions typically occur in the presence of hydrogen gas, with a catalyst promoting the reaction; therefore, high requirements are placed on the reactor's sealing performance, temperature control capabilities, and stirring effectiveness.

[0003] Utility model patent CN217594618U discloses a hydrogenation reactor, relating to the field of reactor technology. It solves the technical problems of existing technologies, such as the inability to quickly perform hydrogenation filtration and discharge, and the inability to achieve rapid temperature exchange. The reactor includes an inner cylinder with an outer cylinder fixedly installed outside it. An inner end cap is fixedly installed at the lower end of the inner cylinder, and a jacketed end cap is fixedly installed at the lower end of the outer cylinder. An upper connector is fixedly installed on the upper wall of the inner cylinder, and an upper cover is fixedly installed at the upper end of the upper connector. This utility model improves the heating and cooling speeds through the double-layered cylinder and end caps, increases the contact area between the heating structure and the inner cylinder, and enhances the temperature exchange speed through methanol cooling pipes. A magnetic stirrer is driven by a drive motor and gear reducer on the upper side, improving the mixing efficiency within the reactor and facilitating disassembly and repair via the top upper cover.

[0004] The aforementioned existing technology achieves heating and cooling functions by introducing hot steam into the cavity formed by the outer and inner cylinders through a steam inlet. However, a single heating structure has several problems: firstly, the heating rate is limited by the steam flow rate, which may result in insufficient temperature regulation and affect the reaction process; secondly, a single steam heating method often struggles to achieve rapid temperature control during cooling, leading to unstable reaction results. Therefore, we propose a hydrogenation experimental reactor with a dual temperature control structure to improve the flexibility of temperature control during the reaction process and solve the aforementioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a hydrogenation experimental reactor with a dual temperature control structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A hydrogenation experimental reactor with a dual temperature control structure includes a reactor body comprising an outer cylinder and an inner cylinder. The inner cylinder is used to contain reactants and catalysts and provides the core space for the chemical reaction. Temperature sensors are installed in the lower middle part of the inner walls of both the outer and inner cylinders, respectively embedded in preset measuring holes in the outer and inner cylinders. By monitoring the temperature changes of the inner and outer walls of the cylinders in real time, the temperature sensor in the outer cylinder is used to detect the temperature of the coolant in the cavity. If the coolant temperature rises, the coolant input can be accelerated. The temperature sensors transmit temperature signals to the controller at a fixed sampling frequency, forming a closed-loop feedback control. When the temperature of the inner cylinder exceeds a set threshold, the controller automatically adjusts the opening of the solenoid valve of the hot oil inlet pipe to control the hot oil flow. If the temperature of the inner cylinder rises abnormally, the coolant inlet pipe is activated to inject cooling medium, realizing the coordinated regulation of the dual temperature control structure. A cavity is provided between the outer cylinder and the inner cylinder. The outer wall of the inner cylinder is provided with a spiral heating tube. The spiral heating tube heats the inner cylinder through hot oil circulation. The hot oil input pipe of the spiral heating tube passes through the bottom of the inner wall of the outer cylinder to the outside. The hot oil input pipe is used to deliver high-temperature heat transfer oil to the spiral heating tube. The oil outlet pipe of the spiral heating tube passes through the inner wall of the outer cylinder to the outside. The oil outlet pipe is used to discharge the low-temperature heat transfer oil that has completed heat exchange, forming a circulation loop. The bottom of the outer cylinder is provided with a coolant inlet pipe that communicates with the cavity. The coolant inlet pipe is used to inject coolant into the cavity to achieve rapid cooling. The outer wall of the outer cylinder and near the top is provided with a coolant outlet pipe that communicates with the cavity. The coolant outlet pipe is used to discharge the coolant in the cavity after it has been heated up, so as to maintain the cooling efficiency. The outer cylinder has a discharge pipe that is connected to the inner cylinder through the middle of its bottom. The discharge pipe is used to discharge the material in the inner cylinder after the reaction is completed. The top flange of the reactor body is connected to the reactor cover. The top of the reactor cover is equipped with a feeding pipe, a hydrogenation pipe and an exhaust pipe. The feeding pipe is used to add reactants and catalysts into the reactor. The hydrogenation pipe is used to input hydrogen into the reactor to provide the gas required for the hydrogenation reaction. The exhaust pipe is used to discharge the gas produced by the reaction and maintain the pressure balance inside the reactor.

[0007] Preferably, the bottom of the outer cylinder is provided with a drain pipe that communicates with the cavity. When the temperature drops to the required temperature, the coolant in the cavity is discharged from the drain pipe. The drain pipe is connected to a coolant recovery device, and a solenoid valve is provided on the drain pipe.

[0008] Preferably, the top of the reactor lid is also equipped with a liquid level detection tube, a pressure relief valve, a sampling tube, and a pressure detector. The liquid level detection tube is used to monitor the liquid level of the reactants to prevent overfeeding. The pressure relief valve is used to automatically open when the pressure exceeds the limit to ensure the safe operation of the reactor. The sampling tube is used to extract samples during the reaction process to detect the reaction status. The pressure detector is used to monitor the pressure inside the reactor in real time.

[0009] Preferably, a gear reducer is provided in the middle of the top of the vessel lid, and the input shaft of the gear reducer is coaxially connected to a motor, which is connected to an external power supply and a controller.

[0010] Preferably, the output shaft of the gear reducer passes through the top of the vessel lid and is coaxially connected to a rotating shaft. The outer wall of the rotating shaft is provided with multiple stirring blades, which are used to stir the reactants and promote full contact between the catalyst and the reactants.

[0011] Preferably, the bottom of both the outer cylinder and the inner cylinder is a hemispherical structure, and the outer cylinder is provided with an insulation sleeve on the outside to reduce heat loss and energy consumption.

[0012] Preferably, the outer wall of the vessel is equipped with a controller, and both the hot oil inlet pipe and the coolant inlet pipe are equipped with solenoid valves. The solenoid valves are used to regulate the flow rate of hot oil and coolant. The temperature sensor and the solenoid valves are electrically connected to the controller via wires. The controller is used to receive the signal from the temperature sensor and control the solenoid valves to achieve automated operation.

[0013] Preferably, the outer wall of the vessel is provided with a support.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. The hydrogenation experimental reactor with dual temperature control structure, through the synergistic effect of the spiral heating tube and the coolant input tube, can quickly and evenly heat the inner cylinder with hot oil, and can also quickly cool down by injecting coolant into the cavity, thus solving the problem of slow adjustment speed of single temperature control method.

[0015] 2. The hydrogenation experimental reactor with dual temperature control structure has temperature sensors in the inner and outer cylinders that monitor temperature changes in real time. These sensors form a closed-loop feedback system with the controller, automatically adjusting the hot oil flow rate and coolant input rate to avoid temperature overshoot or lag, thus significantly improving the repeatability and reliability of the reaction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model; Figure 2 This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 This is a schematic diagram of the overall top-down structure of this utility model; Figure 4 This is a partial cross-sectional structural diagram of the present invention; In the diagram: 100, vessel body; 110, outer cylinder; 120, inner cylinder; 130, cavity; 140, coolant inlet pipe; 150, outlet pipe; 160, drain pipe; 170, discharge pipe; 200, vessel lid; 210, feeding pipe; 220, hydrogenation pipe; 230, exhaust pipe; 240, liquid level detection pipe; 250, pressure relief valve; 260, sampling pipe; 300, gear reducer; 400, motor; 500, rotating shaft; 600, stirring blade; 700, pressure detector; 800, spiral heating tube; 810, hot oil inlet pipe; 820, oil outlet pipe; 900, support. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Please see Figures 1-4 This utility model provides a technical solution: A hydrogenation experimental reactor with a dual temperature control structure includes a reactor body 100, which comprises an outer cylinder 110 and an inner cylinder 120. The inner cylinder 120 is used to contain reactants and catalysts and provides the core space for chemical reactions. Temperature sensors are installed in the lower middle part of the inner walls of both the outer cylinder 110 and the inner cylinder 120. The temperature sensors are embedded in preset measuring holes in the outer cylinder 110 and the inner cylinder 120, respectively, to monitor the temperature changes of the inner and outer walls of the cylinders in real time. The temperature sensor in the outer cylinder 110 is used to detect the temperature of the coolant in the cavity 130. If the coolant temperature rises, the coolant input can be accelerated. The temperature sensor transmits the temperature signal to the controller at a fixed sampling frequency to form a closed-loop feedback control. When the temperature of the inner cylinder 120 exceeds the set threshold, the controller automatically adjusts the opening of the solenoid valve of the hot oil input pipe 810 to control the hot oil flow. If the temperature of the inner cylinder 120 rises abnormally, the coolant input pipe 140 is linked to inject cooling medium, realizing the coordinated regulation of the dual temperature control structure. A cavity 130 is provided between the outer cylinder 110 and the inner cylinder 120. The outer wall of the inner cylinder 120 is provided with a spiral heating tube 800. The spiral heating tube 800 heats the inner cylinder 120 through hot oil circulation. The hot oil input pipe 810 of the spiral heating tube 800 passes through the bottom of the inner wall of the outer cylinder 110 to the outside. The hot oil input pipe 810 is used to deliver high-temperature heat transfer oil to the spiral heating tube 800. The oil outlet pipe 820 of the spiral heating tube 800 passes through the inner wall of the outer cylinder 110 to the outside. The oil outlet pipe 820 is used to discharge the low-temperature heat transfer oil that has completed heat exchange, forming a circulation loop. The bottom of the outer cylinder 110 is provided with a coolant inlet pipe 140 that communicates with the cavity 130. The coolant inlet pipe 140 is used to inject coolant into the cavity 130 to achieve rapid cooling. The outer wall of the outer cylinder 110 and near the top is provided with a coolant outlet pipe 150 that communicates with the cavity 130. The coolant outlet pipe 150 is used to discharge the coolant in the cavity 130 after it has been heated, so as to maintain the cooling efficiency. A discharge pipe 170, which communicates with the inner cylinder 120, is provided through the middle of the bottom of the outer cylinder 110. The discharge pipe 170 is used to discharge the material in the inner cylinder 120 after the reaction is completed. The top flange of the vessel body 100 is connected to the vessel cover 200. The top of the vessel cover 200 is provided with a feeding pipe 210, a hydrogenation pipe 220 and an exhaust pipe 230. The feeding pipe 210 is used to add reactants and catalysts into the reactor. The hydrogenation pipe 220 is used to input hydrogen into the reactor to provide the gas required for the hydrogenation reaction. The exhaust pipe 230 is used to discharge the gas produced by the reaction and maintain the pressure balance inside the reactor.

[0020] In this embodiment, the bottom of the outer cylinder 110 is provided with a drain pipe 160 that communicates with the cavity 130. When the temperature drops to the required temperature, the coolant in the cavity 130 is discharged from the drain pipe 160. The drain pipe 160 is connected to a coolant recovery device, and a solenoid valve is provided on the drain pipe 160.

[0021] Specifically, the top of the vessel lid 200 is also equipped with a liquid level detection tube 240, a pressure relief valve 250, a sampling tube 260, and a pressure detector 700. The liquid level detection tube 240 is used to monitor the liquid level of the reactants to prevent overfeeding. The pressure relief valve 250 is used to automatically open when the pressure exceeds the limit to ensure the safe operation of the reactor. The sampling tube 260 is used to extract samples during the reaction process to detect the reaction status. The pressure detector 700 is used to monitor the pressure inside the vessel in real time.

[0022] Furthermore, a gear reducer 300 is provided in the middle of the top of the vessel lid 200. The input shaft of the gear reducer 300 is coaxially connected to a motor 400, which is connected to an external power supply and controller for operation.

[0023] Furthermore, the output shaft of the gear reducer 300 passes through the top of the vessel cover 200 and is coaxially connected to the rotating shaft 500. The outer wall of the rotating shaft 500 is provided with multiple stirring blades 600, which are used to stir the reactants and promote full contact between the catalyst and the reactants.

[0024] Furthermore, the bottom of both the outer cylinder 110 and the inner cylinder 120 is a hemispherical structure, and the outer cylinder 110 is provided with an insulation sleeve on the outside to reduce heat loss and lower energy consumption.

[0025] Furthermore, a controller is provided on the outer wall of the vessel body 100, and solenoid valves are provided on both the hot oil inlet pipe 810 and the coolant inlet pipe 140. The solenoid valves are used to regulate the flow rate of hot oil and coolant. The temperature sensor and the solenoid valves are electrically connected to the controller through wires. The controller is used to receive the signal from the temperature sensor and control the solenoid valves to achieve automated operation.

[0026] Furthermore, the outer wall of the vessel body 100 is provided with a support 900.

[0027] In this embodiment, the hydrogenation experimental reactor with dual temperature control structure is used as follows: First, reactants and catalyst are added to the inner cylinder 120 of the reactor body 100 through the feeding pipe 210, and then the lid of the feeding pipe 210 is closed. Hydrogen gas is introduced into the inner cylinder 120 through the hydrogenation pipe 220 to the set pressure, and the pressure detector 700 monitors the pressure inside the reactor in real time. The motor 400 is started, and the rotating shaft 500 is driven by the gear reducer 300 to rotate the stirring blade 600, so as to promote the thorough mixing of reactants and catalyst. The controller controls the hot oil of the spiral heating tube 800 according to the feedback signals from the temperature sensors on the inner cylinder 120 and the outer cylinder 110. The solenoid valve of input pipe 810 opens to input high-temperature heat transfer oil into the spiral heating tube 800 for heating. If cooling is required, the controller opens the solenoid valve of coolant input pipe 140 to inject coolant into cavity 130, while outlet pipe 150 discharges the heated coolant. After the reaction is completed, outlet pipe 160 discharges the coolant in cavity 130, and outlet pipe 170 discharges the reaction product. During the process, samples can be extracted and tested through sampling pipe 260. Pressure relief valve 250 automatically opens in case of overpressure to ensure safety. Liquid level detection pipe 240 monitors the liquid level to prevent overflow. Support bracket 900 provides stable support for the entire equipment, and insulation jacket reduces heat loss.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hydrogenation experimental reactor with a dual temperature control structure, comprising a reactor body (100), characterized in that: The vessel body (100) includes an outer cylinder (110) and an inner cylinder (120). Temperature sensors are provided in the lower middle part of the inner walls of both the outer cylinder (110) and the inner cylinder (120). A cavity (130) is provided between the outer cylinder (110) and the inner cylinder (120). A spiral heating tube (800) is provided on the outer wall of the inner cylinder (120). The hot oil inlet pipe (810) of the spiral heating tube (800) passes through the bottom of the inner wall of the outer cylinder (110) to the outside. The oil outlet pipe (820) of the spiral heating tube (800) passes through the outer cylinder (110). The outer cylinder (110) is connected to the inner wall of the vessel body (120) to the outside. The bottom of the outer cylinder (110) is provided with a coolant inlet pipe (140) communicating with the cavity (130). The outer wall of the outer cylinder (110) and near the top are provided with a liquid outlet pipe (150) communicating with the cavity (130). The middle of the bottom of the outer cylinder (110) is provided with a discharge pipe (170) communicating with the inner cylinder (120). The top flange of the vessel body (100) is connected to the vessel cover (200). The top of the vessel cover (200) is provided with a feeding pipe (210), a hydrogenation pipe (220) and an exhaust pipe (230).

2. The hydrogenation experimental reactor with dual temperature control structure according to claim 1, characterized in that: The bottom of the outer cylinder (110) is provided with a drain pipe (160) that communicates with the cavity (130), and a solenoid valve is provided on the drain pipe (160).

3. The hydrogenation experimental reactor with dual temperature control structure according to claim 1, characterized in that: The top of the vessel lid (200) is also equipped with a liquid level detection tube (240), a pressure relief valve (250), a sampling tube (260), and a pressure detector (700).

4. The hydrogenation experimental reactor with dual temperature control structure according to claim 1, characterized in that: A gear reducer (300) is provided in the middle of the top of the vessel cover (200), and a motor (400) is coaxially connected to the input shaft of the gear reducer (300).

5. The hydrogenation experimental reactor with dual temperature control structure according to claim 4, characterized in that: The output shaft of the gear reducer (300) passes through the top of the lid (200) and is coaxially connected to a rotating shaft (500). The outer wall of the rotating shaft (500) is provided with multiple stirring blades (600).

6. The hydrogenation experimental reactor with dual temperature control structure according to claim 1, characterized in that: The bottom of both the outer cylinder (110) and the inner cylinder (120) is a hemispherical structure, and the outer cylinder (110) is provided with an insulation sleeve on the outside.

7. The hydrogenation experimental reactor with dual temperature control structure according to claim 1, characterized in that: The outer wall of the vessel body (100) is equipped with a controller, and both the hot oil input pipe (810) and the coolant input pipe (140) are equipped with solenoid valves. The temperature sensor and the solenoid valve are electrically connected to the controller through wires.

8. The hydrogenation experimental reactor with dual temperature control structure according to claim 1, characterized in that: The outer wall of the vessel body (100) is provided with a support (900).

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