Furandicarboxylic acid reaction kettle

Abstract

The utility model relates to the technical field of chemical reaction kettles, and provides a furandicarboxylic acid reaction kettle which comprises a kettle body provided with a reaction space, a liquid inlet, a catalyst inlet, a catalyst outlet, a gas inlet, a reaction liquid outlet and a gas discharge outlet, the two filter plates are arranged in the kettle body, the two filter plates are distributed at intervals from top to bottom, the catalyst inlet and the catalyst outlet are located between the two filter plates, the two filter plates are used for blocking a catalyst in the reaction space, and the liquid inlet and the reaction liquid outlet are located on the two sides, away from each other, of the two filter plates respectively. Through the technical scheme, the reaction liquid and the catalyst can be separated synchronously, the production efficiency is improved, and meanwhile, the problem of short service life of the catalyst in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of chemical reaction vessel technology, specifically to a furan dicarboxylic acid reaction vessel. Background Technology

[0002] Furanic acid is a furan derivative, appearing as a white or pale yellow crystalline powder. It is soluble in hot water and most organic solvents such as acetone, dichloromethane, and ethanol, but sparingly soluble in cold water. Due to its excellent biodegradability and minimal impact on ecosystems, furanic acid is widely used in the production of fibers, films, and plastics.

[0003] Furandicarboxylic acid is typically prepared via an oxidation process, which requires the use of metal oxides as catalysts. In existing technologies, the metal oxide catalyst reacts with hydroxymethylfurfural and oxygen or hydrogen peroxide in a reactor. After reacting in the reactor, the hydroxymethylfurfural undergoes carbonization from a liquid state. This carbonized hydroxymethylfurfural adheres to the catalyst, affecting its catalytic efficiency. If not addressed promptly, this not only impacts the formation efficiency of furandicarboxylic acid in the reactor but also shortens the catalyst's lifespan. Utility Model Content

[0004] This invention proposes a furan dicarboxylic acid reactor that enables simultaneous separation of the reaction liquid and the catalyst, and also solves the problem of short catalyst lifespan in related technologies.

[0005] The technical solution of this utility model is as follows:

[0006] A furanyl dicarboxylic acid reaction vessel, comprising:

[0007] The vessel body has a reaction space, and the vessel body has a liquid inlet, a catalyst inlet, a catalyst outlet, a gas inlet, a reaction liquid outlet, and a gas exhaust port;

[0008] Two filter plates are disposed inside the reactor body and are spaced apart from top to bottom. The reaction space is located between the two filter plates. The catalyst inlet and the catalyst outlet are located between the two filter plates. The two filter plates are used to prevent the catalyst from diffusing in the reaction space. The liquid inlet and the reaction liquid outlet are located on opposite sides of the two filter plates.

[0009] Optionally, the liquid inlet is located above the filter plate, the reaction liquid outlet is located below the filter plate, the gas inlet is located between the two filter plates, and the gas outlet is located at the top of the reaction space.

[0010] Optionally, it also includes:

[0011] A gas distributor is disposed within the reaction space and is connected to the gas inlet.

[0012] Optionally, the vessel body further includes a reflux port located above the filter plate, and further includes:

[0013] A gas-liquid separator is disposed on one side of the vessel body. The gas-liquid separator has a separation space and a gas outlet and a liquid outlet.

[0014] The first connecting pipe is connected at both ends to the reaction liquid outlet and the separation space, and the gas-liquid separator is used to separate the gas and liquid in the reaction liquid.

[0015] The second connecting pipe has a first inlet, a first outlet and a second outlet. The first inlet is connected to the liquid outlet. The first outlet and the second outlet are respectively connected to the reflux port and the furan dicarboxylic acid collection device. The first outlet and the second outlet are alternately opened or closed.

[0016] The third connecting pipe has a second inlet, a third inlet, and a third outlet. The second inlet is connected to the gas outlet, the third inlet is connected to an external gas source, and the third outlet is connected to the gas inlet.

[0017] Optionally, the gas-liquid separator includes:

[0018] The tank body has a separation space, a gas outlet, and a liquid outlet;

[0019] A partition is disposed within the separation space, which is used to divide the separation space into two interconnected parts at the top. The outlet of the first connecting pipe and the liquid outlet are located on opposite sides of the partition, and the gas outlet is located above the partition.

[0020] Optionally, it also includes:

[0021] A heat exchanger is provided at the first outlet, and the heat exchanger is used to exchange heat with the return liquid;

[0022] A jacket is disposed on the outside of the vessel body. The jacket has a heat exchange medium inlet and a heat exchange medium outlet. The heat exchange medium is used to control the temperature inside the vessel body.

[0023] Optionally, it also includes:

[0024] An ultrasonic rod is disposed inside the vessel and located between the two filter plates. The ultrasonic rod is used to generate high-frequency vibration.

[0025] Optionally, the vessel body also has a pH monitoring port and an auxiliary material inlet. The pH monitoring port is equipped with a pH detector, and the auxiliary material inlet is connected to a pH adjuster pipeline.

[0026] Optionally, the vessel body also has a temperature monitoring port, and a temperature transmitter or temperature sensor is provided at the temperature monitoring port.

[0027] Optionally, the vessel body also includes a pressure monitoring port.

[0028] Optionally, it also includes:

[0029] A plurality of liquid flow monitors are respectively installed at the liquid inlet, the auxiliary material inlet and the reaction liquid outlet, and the liquid flow monitors are used to monitor the liquid flow rate;

[0030] A gas flow monitor is installed at the gas inlet, and the gas flow monitor is used to monitor the gas flow rate;

[0031] A plurality of regulating valves are respectively disposed at the liquid inlet, the auxiliary material inlet, the reaction liquid outlet and the gas inlet, and the regulating valves are used to adjust the flow rates at the liquid flow monitor and the gas flow monitor.

[0032] The working principle and beneficial effects of this utility model are as follows:

[0033] In this invention, the upper filter plate can also be used as a liquid distributor to facilitate the uniform diffusion of liquid entering from the liquid inlet within the reaction space. A gas distributor is also installed inside the reactor, connected to the gas inlet, for the addition and distribution of gas. The gas distributor is a ring pipe with several evenly spaced downward-facing openings for gas discharge. The discharged gas diffuses outwards from the bottom of the ring pipe and then moves upwards, acting as a stirrer to accelerate the mixing of reactants and improve reaction efficiency. A safety valve is installed outside the gas outlet; both the gas outlet and the safety valve are used to release pressure when the pressure becomes too high during the reaction process.

[0034] Hydroxymethylfurfural solution enters the liquid feed space through the liquid inlet, is distributed by the upper filter plate, and then enters the reaction space. Oxygen-containing gases such as oxygen or hydrogen peroxide enter the reaction space through the gas inlet, and a metal oxide catalyst is added through the catalyst inlet. Under the action of the catalyst, hydroxymethylfurfural undergoes an oxidation reaction to produce furanyldicarboxylic acid, resulting in a reaction mixture. When the conversion rate of hydroxymethylfurfural in the reaction solution is detected to be low, a portion of the catalyst can be discharged from the catalyst outlet, while an equal mass of new catalyst is added through the catalyst inlet to ensure the reaction efficiency of hydroxymethylfurfural in the reactor. The catalyst removed from the reactor is regenerated and reused. Under the pressure inside the reactor, the reaction mixture passes through the filter plate to intercept the catalyst, resulting in a reaction liquid containing unreacted hydroxymethylfurfural solution and gas, as well as furanyldicarboxylic acid. Under pressure, the reaction liquid can exit the reaction liquid storage space through the reaction liquid outlet.

[0035] The catalyst inlet and outlet are located between two filter plates, effectively intercepting the catalyst and enabling simultaneous oxidation and catalyst separation, thus improving production efficiency and extending catalyst lifespan. Secondly, this design makes the reaction zone within the reactor more clearly defined, facilitating optimized control and management of the reaction process. Attached Figure Description

[0036] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0037] Figure 1 This is a schematic diagram of the structure of this utility model;

[0038] In the diagram: 100, vessel body; 110, reaction space; 120, liquid inlet; 131, catalyst inlet; 132, catalyst outlet; 140, gas inlet; 150, reaction liquid outlet; 160, gas exhaust port; 111, filter plate; 112, gas distributor; 170, reflux port; 200, gas-liquid separator; 211, separation space; 212, gas outlet; 213, liquid outlet; 300, first connecting pipe; 400, second connecting pipe; 410, first inlet; 420, first outlet. 430, Second outlet; 500, Third connecting pipe; 510, Second inlet; 520, Third inlet; 530, Third outlet; 210, Tank body; 220, Baffle plate; 600, Heat exchanger; 700, Jacket; 710, Heat exchange medium inlet; 720, Heat exchange medium outlet; 800, Ultrasonic rod; 181, pH monitoring port; 182, Auxiliary material inlet; 191, Temperature monitoring port; 192, Pressure monitoring port; 910, Liquid flow monitor; 920, Gas flow monitor; 930, Regulating valve. Detailed Implementation

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0040] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0041] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Reference Figure 1This invention proposes a furan dicarboxylic acid reactor, comprising a reactor body 100, a reaction space 110, a liquid inlet 120, a catalyst inlet 131, a catalyst outlet 132, a gas inlet 140, a reaction liquid outlet 150, and a gas exhaust outlet 160; two filter plates 111 are provided, both disposed within the reactor body 100, and the two filter plates 111 are spaced apart from top to bottom, with the reaction space 100 located between the two filter plates 111. The two filter plates 111 divide the interior of the reactor body 100 into three parts, with the space above the upper filter plate 111 serving as the liquid feed space. Between the two filter plates 111, the space between them is the reaction space 110. The space below the lower filter plate 111 is the reaction liquid storage space. The catalyst inlet 131 and the catalyst outlet 132 are located between the two filter plates 111. The two filter plates 111 are used to contain the catalyst in the reaction space 110. The liquid inlet 120 is located above the upper filter plate 111. The reaction liquid outlet 150 is located at the bottom of the reaction liquid storage space. A gas distributor 112 is also provided at the bottom of the reaction space 110, which is connected to the gas inlet 140. The gas inlet 140 is located below the lower filter plate. The gas outlet 160 is located at the top of the vessel.

[0044] In this embodiment, the upper filter plate 111 can also be used as a liquid distributor to facilitate the uniform diffusion of liquid entering from the liquid inlet 120 within the reaction space 110. A gas distributor 112 is also provided inside the vessel body 100, connected to the gas inlet 140, for the addition and distribution of gas. The gas distributor 112 is a ring pipe with several evenly spaced downward-facing openings for gas discharge. The discharged gas diffuses outwards from the bottom of the ring pipe and then moves upwards, acting as a stirrer to accelerate the mixing of reactants and improve reaction efficiency. A safety valve is provided outside the gas outlet 160, and both the gas outlet 160 and the safety valve are used to release pressure when the pressure is too high during the reaction process.

[0045] Hydroxymethylfurfural solution enters the liquid feed space through liquid inlet 120, is distributed by upper filter plate 111, and then enters the reaction space 110. Oxygen-containing gas, such as oxygen or hydrogen peroxide, enters the reaction space 110 through gas inlet 140. A metal oxide catalyst is added through catalyst inlet 131. Under the action of the catalyst, hydroxymethylfurfural undergoes an oxidation reaction to produce furanyl dicarboxylic acid, resulting in a reaction mixture. If the conversion rate of hydroxymethylfurfural in the reaction solution is low, some catalyst can be discharged from catalyst outlet 132, while an equal mass of new catalyst is added through catalyst inlet 131 to ensure the reaction efficiency of hydroxymethylfurfural in the reactor. The catalyst removed from the reactor is regenerated and reused. Under pressure within the reactor body 100, the reaction mixture passes through lower filter plate 111 to intercept the catalyst, resulting in a reaction liquid containing unreacted hydroxymethylfurfural solution and gas, as well as furanyl dicarboxylic acid. Under pressure, the reaction liquid can exit the reaction liquid storage space through reaction liquid outlet 150.

[0046] The catalyst inlet 131 and catalyst outlet 132 are located between two filter plates 111, effectively intercepting the catalyst and enabling simultaneous oxidation reaction and catalyst separation, thereby improving production efficiency and extending catalyst lifespan. Secondly, this makes the reaction zone within the reactor more clearly defined, facilitating optimized control and management of the reaction process.

[0047] Furthermore, the liquid inlet 120 is located above the filter plate 111, the reaction liquid outlet 150 is located below the filter plate 111, the gas inlet 140 is located on the lower side of the reaction space 110, and the gas outlet 160 is located at the top of the vessel body 100.

[0048] In this embodiment, the liquid inlet 120 is located on one side of the liquid feeding space, the reaction liquid outlet 150 is located at the bottom of the reaction liquid storage space, and the gas inlet 140 is located on the lower side of the reaction space 110 and is connected to the gas distributor 112.

[0049] The hydroxymethylfurfural solution enters the reaction space 110 through the liquid inlet 120 located on one side of the liquid feed space and is redistributed by the upper filter plate 111. Gas enters the reaction space 110 through the gas inlet 140 located on the lower side of the reaction space 110 and the gas distributor 112. This allows the hydroxymethylfurfural solution to flow naturally under gravity, improving its flow efficiency. The gas inlet's location below the reaction space 110 facilitates sufficient contact between the gas and the reaction liquid, enhancing the reaction effect. The reaction liquid outlet 150 is located at the bottom of the reaction liquid storage space, ensuring that the reaction mixture is filtered by the lower filter plate 111 to intercept the catalyst before being discharged from the reaction liquid outlet 150.

[0050] Furthermore, the vessel body 100 also has a reflux port 170, located on one side of the liquid feed space, and includes a gas-liquid separator 200, which is disposed on one side of the vessel body 100. The gas-liquid separator 200 has a separation space 211, a gas outlet 212, and a liquid outlet 213. The first connecting pipe 300 is connected at both ends to the reaction liquid outlet 150 and the separation space 211, respectively. The gas-liquid separator 200 is used to separate the gas and liquid in the reaction liquid. The second connecting pipe 400 has a first inlet 4. 10. A first outlet 420 and a second outlet 430, a first inlet 410 connected to a liquid outlet 213, a first outlet 420 and a second outlet 430 connected to a reflux port 170 and a furanyl dicarboxylic acid collection device respectively, and the first outlet 420 and the second outlet 430 alternately open or close; a third connecting pipe 500 has a second inlet 510, a third inlet 520 and a third outlet 530, a second inlet 510 connected to a gas outlet 212, a third inlet 520 connected to an external gas source, and a third outlet 530 connected to a gas inlet 140.

[0051] In this embodiment, after the reaction liquid in the reactor flows out from the reaction liquid outlet 150, it enters the separation space 211 of the gas-liquid separator 200 along the first connecting pipe 300. The gas-liquid separator 200 uses its special internal structure and working principle to separate the gas and liquid in the reaction liquid. The separated liquid flows out from the liquid outlet 213 and enters the second connecting pipe 400. A control device causes the first outlet 420 and the second outlet 430 of the second connecting pipe 400 to open or close alternately. When the first outlet 420 is open, the liquid flows back to the return port 170 of the reactor body 100 and participates in the reaction again; when the second outlet 430 is open, the liquid flows to the furanyl dicarboxylic acid collection device for collection. Simultaneously, the gas separated by the gas-liquid separator 200 flows out from the gas outlet 212 and enters the third connecting pipe 500. Gas from an external gas source also enters the third connecting pipe 500 through the third inlet 520. After the two gases are mixed, they flow out from the third outlet 530 and return to the reactor through the gas inlet 140 to maintain the gas environment required for the reaction.

[0052] Liquid and gas circulation are achieved through the reflux port 170, the second connecting pipe 400, the gas inlet 140, and the third connecting pipe 500. This circulation not only increases the residence time of the reaction liquid but also improves the conversion rate of hydroxymethylfurfural and the selectivity of furanyl dicarboxylic acid. For example, when the hydroxymethylfurfural content in the reaction liquid in the gas-liquid separator 200 is detected to be greater than 5%, a transfer pump returns the reaction liquid to the reaction space 110 through the second connecting pipe 400 and the reflux port 170 for further reaction. Conversely, when the hydroxymethylfurfural content in the reaction liquid in the gas-liquid separator 200 is detected to be less than or equal to 5%, a transfer pump transports furanyl dicarboxylic acid to the collection device for collection through the second connecting pipe 400. The gas recovery and reuse can be achieved through the gas-liquid separator 200 and the third connecting pipe 500, improving gas utilization efficiency.

[0053] Furthermore, the gas-liquid separator 200 includes a tank 210, which has a separation space 211, a gas outlet 212, and a liquid outlet 213. A partition 220 is disposed in the separation space 211, which is used to divide the separation space 211 into two interconnected parts at the top. The outlet of the first connecting pipe 300 and the liquid outlet 213 are located on both sides of the partition 220, and the gas outlet 212 is located above the partition 220.

[0054] In this embodiment, the partition 220 can be fixed in the separation space 211 by welding or using high-strength bolts to ensure its stability and sealing. The first connecting pipe 300 transports the reaction liquid in the vessel 100 to one side of the partition 220 in the tank 210. After the liquid level on one side of the partition 220 exceeds the partition 220, it will overflow to the other side of the partition 220 under the action of gravity. At this time, the gas mixed in the liquid can leave from the reaction liquid, thereby realizing gas-liquid separation.

[0055] By installing a baffle 220 inside the tank 210, the separation space 211 is divided into two interconnected parts at the top, effectively extending the flow path of the gas-liquid mixture within the separation space 211, thereby improving the efficiency and accuracy of gas-liquid separation. The outlet of the first connecting pipe 300 and the liquid outlet 213 are located on opposite sides of the baffle 220, helping to reduce the possibility of the separated liquid re-mixing into the gas, ensuring that the gas discharged from the gas outlet 212 has high purity. The gas outlet 212 is located above the baffle 220, ensuring that the discharged gas does not carry excessive liquid droplets, further improving gas quality.

[0056] Furthermore, it also includes a heat exchanger 600, which is disposed at the first outlet 420. The heat exchanger 600 is used to exchange heat with the reflux liquid, thereby regulating the temperature inside the vessel 100. A jacket 700 is disposed outside the vessel 100. The jacket 700 has a heat exchange medium inlet 710 and a heat exchange medium outlet 720. The heat exchange medium is used to control the temperature inside the vessel 100.

[0057] In this embodiment, the heat exchanger 600 can be a plate heat exchanger 600 or a tubular heat exchanger 600. The heat exchanger 600 can exchange heat with the reflux liquid in the second connecting pipe 400, fully absorbing the reaction heat in the reflux liquid and ensuring that the temperature inside the vessel 100 remains stable. A heat exchange medium can be introduced into the jacket 700 of the vessel 100. The heat exchange medium can remove the reaction heat inside the vessel 100 through heat exchange, maintaining a relatively stable temperature condition inside the reaction space 110.

[0058] Furthermore, it also includes an ultrasonic rod 800, which is disposed inside the vessel body 100 and located between two filter plates 111. The ultrasonic rod 800 is used to generate high-frequency vibration.

[0059] In this embodiment, the ultrasonic rod 800 can be made of titanium alloy to ensure its stability and corrosion resistance in a chemical environment. The ultrasonic rod 800 is fixed inside the vessel body 100 by a mounting bracket, which can be made of stainless steel and fixed to the vessel body 100 by welding or bolting. The ultrasonic rod 800 should be precisely positioned in the central region between the two filter plates 111 to ensure that the high-frequency vibrations it generates can act uniformly on this region. The power supply and control system of the ultrasonic rod 800 can be located outside the vessel body 100 and connected via sealed wiring to ensure the sealing of the vessel body 100.

[0060] The high-frequency vibrations generated by the ultrasonic rod 800 not only promote material mixing and reaction, making the reaction more complete and uniform, and improving product quality and yield, but also effectively dislodge deposits on the catalyst, extending catalyst life and reaction efficiency.

[0061] Furthermore, the vessel body 100 also has a pH monitoring port 181 and an auxiliary material inlet 182. A pH detector is installed at the pH monitoring port 181, and the auxiliary material inlet 182 is connected to the pH adjuster pipeline.

[0062] In this embodiment, the pH monitoring port 181 can be located on the side of the vessel body 100, using a standard-sized interface to facilitate the installation and removal of the pH detector. The pH detector can be a high-precision online pH probe, fixed to the monitoring port via a threaded or flanged connection, ensuring a good seal at the connection point to prevent material leakage. The auxiliary material inlet 182 can be located in the lower middle part of the vessel body 100, also using a standard interface. For example, the auxiliary material inlet 182 allows the operator to add a pH adjuster to the reactor, maintaining a stable pH value in the reaction space 110.

[0063] The pH detector inside the vessel 100 can monitor the pH value in the reaction space 110 in real time, and then feed it back to the control system of the auxiliary material inlet 182 through the control system. By introducing a certain amount of pH adjuster, the liquid in the reaction space 110 is kept in a stable pH range.

[0064] Furthermore, the vessel body 100 also has a temperature monitoring port 191, at which a temperature transmitter or temperature sensor is installed.

[0065] In this embodiment, a temperature monitoring port 191 is provided in the vessel body 100, and a temperature transmitter or temperature sensor is installed. This allows for real-time and accurate acquisition of temperature information within the vessel body 100, providing operators with intuitive data references. This helps to promptly detect abnormal temperatures, enabling the implementation of appropriate control measures to prevent excessively high or low temperatures from affecting the reaction process, thus ensuring the stability and safety of the reaction.

[0066] Furthermore, the vessel body 100 also includes a pressure monitoring port 192.

[0067] In this embodiment, the pressure monitoring port 192 can be equipped with a pressure detector to monitor the pressure inside the vessel 100 in real time, promptly detect pressure anomalies, and take corresponding control measures to ensure production safety. Accurate pressure data helps optimize process operations, such as controlling the reaction rate, adjusting the material feed rate, and discharging the reaction liquid, thereby improving reaction efficiency and product quality.

[0068] Furthermore, it also includes several liquid flow monitors 910, which are respectively installed at the liquid inlet 120, the auxiliary material inlet 182, and the reaction liquid outlet 150. The liquid flow monitors 910 are used to monitor the liquid flow rate. A gas flow monitor 920 is installed at the gas inlet 140 and is used to monitor the gas flow rate. Several regulating valves 930 are respectively installed at the liquid inlet 120, the auxiliary material inlet 182, the reaction liquid outlet 150, and the gas inlet 140. The regulating valves 930 are used to adjust the flow rates at the liquid flow monitors 910 and the gas flow monitors 920.

[0069] In this embodiment, the liquid flow monitor 910 can be an electromagnetic flow meter or a turbine flow meter, and its installation method should ensure a tight, leak-free connection with the pipeline. At the liquid inlet 120, auxiliary material inlet 182, and reaction liquid outlet 150, the flow meter can be fixed to the pipeline via flange or threaded connection, and a proper seal should be ensured. The gas flow monitor 920 can be a thermal mass flow meter or a vortex flow meter, installed on the gas inlet 140 pipeline, again ensuring a secure and well-sealed connection. The regulating valve 930 can be an electric regulating valve 930 or a pneumatic regulating valve 930, selected according to actual needs and control precision. The regulating valve 930 is connected to the corresponding pipeline via a flange and is linked to the flow monitor for control. The signals from the flow monitor and the regulating valve 930 can be transmitted to the central control system to achieve automated monitoring and regulation.

[0070] In actual installation, the regulating valve 930, liquid flow monitor 910 or gas flow monitor 920 are arranged in sequence according to the flow direction of gas or liquid to ensure that the flow rate monitored by the liquid flow monitor 910 or gas flow monitor 920 is regulated by the regulating valve 930.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A furanyl dicarboxylic acid reaction vessel, characterized in that, include: The vessel body (100) has a reaction space (110) and the vessel body (100) has a liquid inlet (120), a catalyst inlet (131), a catalyst outlet (132), a gas inlet (140), a reaction liquid outlet (150) and a gas exhaust outlet (160). There are two filter plates (111), both of which are disposed inside the vessel body (100), and the two filter plates (111) are distributed at intervals from top to bottom. The reaction space (110) is located between the two filter plates (111). The catalyst inlet (131) and the catalyst outlet (132) are located between the two filter plates (111). The two filter plates (111) are used to prevent the catalyst from entering the reaction space (110). The liquid inlet (120) and the reaction liquid outlet (150) are located on opposite sides of the two filter plates (111) that are far apart from each other.

2. The furanyl dicarboxylic acid reaction vessel according to claim 1, characterized in that, The liquid inlet (120) is located above the filter plate (111), the reaction liquid outlet (150) is located below the filter plate (111), the gas inlet (140) is located between the two filter plates (111), and the gas outlet (160) is located at the top of the reaction space (110).

3. The furanyl dicarboxylic acid reaction vessel according to claim 1, characterized in that, Also includes: A gas distributor (112) is disposed within the reaction space (110) and is connected to the gas inlet (140).

4. The furanyl dicarboxylic acid reaction vessel according to claim 1, characterized in that, The vessel body (100) also has a reflux port (170) located above the filter plate (111), and further includes: A gas-liquid separator (200) is disposed on one side of the vessel body (100). The gas-liquid separator (200) has a separation space (211) and a gas outlet (212) and a liquid outlet (213). The first connecting pipe (300) is connected at both ends to the reaction liquid outlet (150) and the separation space (211), respectively. The gas-liquid separator (200) is used to separate the gas and liquid in the reaction liquid. The second connecting pipe (400) has a first inlet (410), a first outlet (420) and a second outlet (430). The first inlet (410) is connected to the liquid outlet (213). The first outlet (420) and the second outlet (430) are connected to the reflux port (170) and the furan dicarboxylic acid collection device, respectively. The first outlet (420) and the second outlet (430) are alternately opened or closed. The third connecting pipe (500) has a second inlet (510), a third inlet (520) and a third outlet (530). The second inlet (510) is connected to the gas outlet (212), the third inlet (520) is connected to an external gas source, and the third outlet (530) is connected to the gas inlet (140).

5. A furanyl dicarboxylic acid reaction vessel according to claim 4, characterized in that, The gas-liquid separator (200) includes: The tank (210) has a separation space (211), a gas outlet (212) and a liquid outlet (213). A partition (220) is disposed in the separation space (211). The partition (220) is used to divide the separation space (211) into two connected parts at the top. The outlet of the first connecting pipe (300) and the liquid outlet (213) are located on both sides of the partition (220), and the gas outlet (212) is located above the partition (220).

6. The furanyl dicarboxylic acid reaction vessel according to claim 4, characterized in that, Also includes: A heat exchanger (600) is provided at the first outlet (420), the heat exchanger (600) being used for heat exchange with the return liquid; A jacket (700) is disposed outside the vessel body (100). The jacket (700) has a heat exchange medium inlet (710) and a heat exchange medium outlet (720). The heat exchange medium is used to control the temperature inside the vessel body (100).

7. The furanyl dicarboxylic acid reaction vessel according to claim 1, characterized in that, Also includes: An ultrasonic rod (800) is disposed inside the vessel body (100) and is located between the two filter plates (111). The ultrasonic rod (800) is used to generate high-frequency vibration.

8. The furanyl dicarboxylic acid reaction vessel according to claim 1, characterized in that, The vessel body (100) also has a pH monitoring port (181) and an auxiliary material inlet (182). A pH detector is installed at the pH monitoring port (181), and the auxiliary material inlet (182) is connected to a pH adjuster pipeline. The vessel body (100) also has a temperature monitoring port (191), at which a temperature transmitter or temperature sensor is provided.

9. A furanyl dicarboxylic acid reaction vessel according to claim 1, characterized in that, The vessel body (100) also includes a pressure monitoring port (192).

10. A furanyl dicarboxylic acid reaction vessel according to claim 8, characterized in that, Also includes: A plurality of liquid flow monitors (910) are respectively installed at the liquid inlet (120), the auxiliary material inlet (182) and the reaction liquid outlet (150), and the liquid flow monitors (910) are used to monitor the liquid flow rate; A gas flow monitor (920) is installed at the gas inlet (140) and is used to monitor the gas flow rate; A plurality of regulating valves (930) are respectively disposed at the liquid inlet (120), the auxiliary material inlet (182), the reaction liquid outlet (150) and the gas inlet (140). The regulating valves (930) are used to adjust the flow rate at the liquid flow monitor (910) and the gas flow monitor (920).

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