A dynamic tubular reactor for furfuryl alcohol

Abstract

The utility model discloses a kind of furfuryl alcohol dynamic tubular reactors, relate to furfuryl alcohol production equipment technical field.The utility model includes premixing tank, reaction tank and stirring assembly;Premixing tank is provided with reaction tank on the side, reaction tank is internally provided with hydrogen coil and furfural coil, hydrogen coil bottom end is fixedly connected with hydrogen import pipe, furfural coil bottom end is fixedly connected with furfural import pipe, stirring assembly includes shaft, carousel and stirring blade two, shaft is internally provided with hydrogen passage, shaft side is fixedly connected with suction ring, air inlet is provided on suction ring, air cavity is internally provided in carousel, air outlet is provided in carousel top end, the utility model is premixed tank, discharge coil, reaction tank, hydrogen coil, hydrogen import pipe, furfural coil, furfural import pipe, hollow jacket and stirring assembly are set, solve the problem of low reaction rate when catalytic hydrogenation reaction of furfuryl alcohol, hydrogen recycling rate is low, and the problem of relatively high energy consumption.

Description

Technical Field

[0001] This utility model belongs to the technical field of furfuryl alcohol production equipment, and in particular relates to a dynamic tubular reactor for furfuryl alcohol. Background Technology

[0002] Furfuryl alcohol is an important chemical raw material produced by the catalytic hydrogenation of furfural, and it is widely used in casting resins, anti-corrosion coatings, adhesives, and pharmaceutical intermediates. With increasingly stringent environmental regulations and growing demand for high-end materials, the market demand for high-purity furfuryl alcohol is increasing. Traditional furfuryl alcohol production methods often employ a batch reactor (intermittent or semi-continuous process) to stir and mix furfural, catalyst, and hydrogen. However, this method of furfuryl alcohol production still has the following problems: Because hydrogen is less dense than air, when furfural, catalyst and hydrogen are introduced, the hydrogen will move upward in the reactor, while the furfural and catalyst will fall. It is necessary to wait for the hydrogen to come into contact with the furfural and catalyst before the reaction can take place. At the same time, only the furfural, catalyst and hydrogen at the contact surface can react, resulting in low reaction efficiency. During the production of furfuryl alcohol, unreacted hydrogen will fill the upper part of the reactor, and the discharge pipe is also located at the top of the reactor. Hydrogen above the reactor may escape from the discharge pipe, resulting in hydrogen waste and low hydrogen recycling rate. The catalytic hydrogenation of furfural is a strongly exothermic reaction, but the heat transfer efficiency of the batch reactor is poor, which can easily lead to local overheating and trigger side reactions (such as excessive hydrogenation to produce tetrahydrofurfuryl alcohol or polymerization reaction), reducing product selectivity. This requires the use of cooling equipment to cool down the inside of the reactor. However, in the early stage of the reaction, it is necessary to heat the various raw materials in the reactor to accelerate the reaction rate. This alternating heating and cooling operation consumes a lot of energy.

[0003] To address these issues, we provide a furfuryl alcohol dynamic tubular reactor. Utility Model Content

[0004] The purpose of this invention is to provide a dynamic tubular reactor for furfuryl alcohol. By setting up a premixing tank, a discharge coil, a reaction tank, a hydrogen coil, a hydrogen inlet pipe, a furfural coil, a furfural inlet pipe, a hollow jacket, and a stirring assembly, it solves the problems of low reaction rate, low hydrogen recycling rate, and high energy consumption during the catalytic hydrogenation reaction of furfuryl alcohol.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a furfuryl alcohol dynamic tubular reactor, comprising a premixing tank, a reaction tank, and a stirring assembly. A feed pipe is fixedly connected to the upper periphery of the premixing tank. The reaction tank is located on the periphery of the premixing tank, away from the feed pipe. A hydrogen coil is installed inside the reaction tank, with its inlet end extending outwards into the reaction tank. Two hydrogen inlet pipes are fixedly connected to the bottom end of the hydrogen coil. A furfural coil is also installed inside the reaction tank, with its feed end extending outwards into the reaction tank. A furfural inlet pipe is fixedly connected to the bottom end of the furfural coil, and its height is higher than that of the hydrogen inlet pipe. The stirring assembly includes a rotating shaft located inside the reaction tank and rotatably connected to it. A turntable is fixedly connected to the bottom end of the rotating shaft. Two stirring blades arranged in a circular array are fixedly connected to the periphery of the turntable. From a top-view perspective, both the hydrogen coil and the furfural coil are located around the two stirring blades. When producing furfuryl alcohol, furfural and catalyst are first added to the premixing tank through the feed pipe for premixing. Then, the premixed furfural and catalyst are introduced into the reaction tank through the furfural coil, while hydrogen is introduced into the reaction tank through the hydrogen coil. Since the furfural inlet pipe is higher than the hydrogen inlet pipe and the hydrogen moves upward, the introduced furfural, catalyst and hydrogen will come into full contact and react. At the same time, the stirring blades rotate to stir the furfural, catalyst and hydrogen, accelerating the mixing reaction process. The outlet of the furfural inlet pipe faces the rotation path of the second stirring blade. A hydrogen channel is opened inside the rotating shaft. An air intake ring is fixedly connected to the circumference of the rotating shaft at the top of the hydrogen channel. An air inlet is opened through the circumference of the air intake ring and is connected to the hydrogen channel. An air chamber is opened inside the turntable and is connected to the hydrogen channel. An air outlet is opened through the top of the turntable and is connected to the air chamber. When furfural and catalyst are introduced into the reactor, they impact the second stirring blade, causing the second stirring blade to rotate. No additional power device is needed. The rotation of the second stirring blade drives the turntable, the rotating shaft, and the suction ring to rotate. Due to the rotation of the air inlet of the suction ring, a negative pressure is formed around the suction ring, which absorbs hydrogen from the upper part of the reactor. The hydrogen enters the gas chamber through the hydrogen channel and is discharged from the gas outlet, moving upward again to react with furfural and catalyst in the reactor.

[0006] Furthermore, a stirring shaft is rotatably connected inside the premixing tank, and a stirring blade arranged in a ring array is fixedly connected to the lower part of the periphery of the stirring shaft. A motor is fixedly connected to the top of the premixing tank, and the output shaft of the motor is connected to the end of the stirring shaft near it. When the motor is started, the output shaft of the motor rotates, which drives the stirring shaft and stirring blades to rotate, thereby stirring the furfural and catalyst in the premixing tank and accelerating the mixing process.

[0007] Furthermore, a support frame is fixedly connected to the periphery of the premix tank, and a fixed platform is fixedly connected to the bottom end of the support frame; The fixed platform and support frame provide support for the premix tank.

[0008] Furthermore, a metering pump is fixedly connected to the top of the fixed platform located on one side of the support frame. The water inlet of the metering pump is fixedly connected to the bottom of the premix tank, and the water outlet of the metering pump is fixedly connected to the feed inlet of the furfural coil. Start the metering pump, which draws furfural and catalyst from the premix tank into the furfural coil. At the same time, the flow rate of furfural and catalyst is metered, thereby controlling the amount of hydrogen introduced.

[0009] Furthermore, a hollow jacket is fixedly connected to the center of the periphery of the reaction vessel, and the feed end of the furfural coil extends outward through the hollow jacket. In the initial stage of the reaction, high-temperature steam is introduced into the hollow jacket to heat the inside of the reaction vessel and promote the catalytic hydrogenation reaction. After the temperature inside the reaction vessel rises, the introduction of high-temperature steam is stopped, and the hollow jacket assists in heat dissipation.

[0010] Furthermore, a discharge pipe is fixedly connected through the upper periphery of the reaction vessel near the premixing tank. The liquid level inside the reaction vessel is lower than the suction ring and higher than the discharge pipe. After the reaction is complete, the generated furfuryl alcohol is discharged from the reaction vessel through the discharge pipe. At the same time, hydrogen gas will not be discharged from the discharge pipe.

[0011] Furthermore, the premix tank is equipped with a discharge coil located around the stirring blades from a top-down view. The inlet and outlet ends of the discharge coil are both fixedly connected to the premix tank in a through manner, and the inlet end of the discharge coil is fixedly connected to the discharge pipe in a through manner.

[0012] As furfuryl alcohol flows through the discharge coil, it heats the furfural and catalyst in the premix tank, accelerating the catalytic reaction of furfural and its mixing with the catalyst.

[0013] This utility model has the following beneficial effects: This invention solves the problem of low reaction rate by setting up a premixing tank, a reaction tank, a hydrogen coil, a hydrogen inlet pipe, a furfural coil, a furfural inlet pipe, and a stirring assembly. First, furfural and catalyst are premixed in the premixing tank. Then, the premixed furfural and catalyst are added from the feed end of the furfural coil and enter the reaction tank through the furfural inlet pipe. Hydrogen is introduced from the inlet end of the hydrogen coil and enters the reaction tank through the hydrogen inlet pipe. Since the furfural inlet pipe is higher than the hydrogen inlet pipe, and the hydrogen rises after entering the reaction tank, the premixed furfural and catalyst directly contact the rising hydrogen. Simultaneously, the stirring blades rotate, agitating the furfural, catalyst, and hydrogen to promote mixing and reaction, thereby improving mixing efficiency.

[0014] This invention solves the problem of low hydrogen recycling efficiency by setting up a furfural inlet pipe and a stirring assembly. Unreacted hydrogen rises and moves to the upper part of the reaction vessel. When furfural flows out from the furfural inlet pipe, it drives the stirring blades to rotate, which in turn drives the turntable, shaft and suction ring to rotate. Due to the rotation of the suction ring's inlet hole, a negative pressure is formed around the suction ring, which attracts hydrogen from the upper part of the reactor. The hydrogen enters the gas chamber through the hydrogen channel and is discharged from the outlet hole, and then reacts again with the furfural and catalyst in the lower part of the reactor, thereby improving the hydrogen utilization rate.

[0015] This invention solves the problem of high energy consumption by setting up a discharge coil, a hydrogen coil, a furfural coil, and a hollow jacket. In the initial stage of the reaction, high-temperature steam is introduced into the hollow jacket to heat the reactor and promote the catalytic hydrogenation reaction. When the reactor temperature rises due to the catalytic hydrogenation reaction, the introduction of high-temperature steam is stopped. The hydrogen flow through the hydrogen coil is heated and absorbs some heat at the same time. The furfural and catalyst flow through the furfural coil are heated and absorb some heat at the same time. This accelerates the reaction rate and prevents the reactor temperature from becoming too high and causing side reactions. After furfuryl alcohol is generated, it flows through the discharge coil to heat the furfural and catalyst in the premix tank, accelerating the subsequent reaction rate and achieving the goal of reducing energy consumption.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a dynamic tubular reactor for furfuryl alcohol.

[0019] Figure 2 This is a schematic diagram of the premixing tank.

[0020] Figure 3 This is a cross-sectional view of the premixing tank.

[0021] Figure 4 This is a schematic diagram of the reaction vessel.

[0022] Figure 5 This is a cross-sectional schematic diagram of the reaction vessel.

[0023] Figure 6 This is a schematic diagram of the connection structure between the rotating shaft and the suction ring.

[0024] Figure 7 This is a schematic diagram of the connection structure between the rotating shaft and the turntable.

[0025] The attached diagram lists the components represented by each number as follows: 1. Premixing tank; 101. Support frame; 102. Fixed platform; 103. Feed pipe; 104. Discharge coil; 2. Reaction tank; 201. Hydrogen coil; 2011. Hydrogen inlet pipe; 202. Furfural coil; 2021. Furfural inlet pipe; 203. Discharge pipe; 204. Hollow jacket; 3. Metering pump; 4. Stirring shaft; 401. Stirring blade one; 402. Motor; 5. Stirring assembly; 501. Rotating shaft; 5011. Hydrogen channel; 502. Suction ring; 5021. Air inlet; 503. Turntable; 5031. Gas chamber; 5032. Air outlet; 504. Stirring blade two. Detailed Implementation

[0026] 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 skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1

[0027] Please see Figure 1-7This utility model relates to a furfuryl alcohol dynamic tubular reactor, comprising a premixing tank 1, a reaction tank 2, and a stirring assembly 5. A feed pipe 103 is fixedly connected to the upper periphery of the premixing tank 1. The reaction tank 2 is located on the periphery of the premixing tank 1 away from the feed pipe 103. A hydrogen coil 201 is installed inside the reaction tank 2, with its inlet end extending outwards into the reaction tank 2. Two hydrogen inlet pipes 2011 are fixedly connected to the bottom end of the hydrogen coil 201. A furfural coil 202 is also installed inside the reaction tank 2. The material end extends outward through the reaction vessel 2. The bottom end of the furfural coil 202 is fixedly connected to the furfural inlet pipe 2021. The height of the furfural inlet pipe 2021 is higher than the height of the hydrogen inlet pipe 2011. The stirring assembly 5 includes a rotating shaft 501 located inside the reaction vessel 2 and rotatably connected to the reaction vessel 2. The bottom end of the rotating shaft 501 is fixedly connected to a turntable 503. The circumference of the turntable 503 is fixedly connected to stirring blades 504 arranged in a ring array. The hydrogen coil 201 and the furfural coil 202 are both located around the stirring blades 504 when viewed from above. In the production of furfuryl alcohol, furfural and catalyst are first added to the premixing tank 1 through the feed pipe 103 for premixing. Then, the premixed furfural and catalyst are introduced into the reaction tank 2 through the furfural coil 202. At the same time, hydrogen is introduced into the reaction tank 2 through the hydrogen coil 201. Since the furfural inlet pipe 2021 is higher than the hydrogen inlet pipe 2011 and the hydrogen moves upward, the introduced furfural, catalyst and hydrogen will come into full contact and react. At the same time, the stirring blade 204 rotates to stir the furfural, catalyst and hydrogen, accelerating the mixing reaction process. Since the catalytic hydrogenation reaction of furfural is a strongly exothermic reaction, the hydrogen flow through the hydrogen coil 201 and the furfural and catalyst flow through the furfural coil 202 are heated, absorbing the excess heat in the reaction tank 2 and increasing the reaction rate of subsequent reactions.

[0028] Among them, such as Figure 3 As shown, a stirring shaft 4 is rotatably connected inside the premix tank 1. Stirring blades 401 arranged in a ring array are fixedly connected to the lower part of the periphery of the stirring shaft 4. A motor 402 is fixedly connected to the top of the premix tank 1. The output shaft of the motor 402 is connected to the end of the stirring shaft 4 near it. After adding furfural and catalyst into premix tank 1, start motor 402. The output shaft of motor 402 rotates, driving stirring shaft 4 and stirring blade 401 to rotate, which can stir furfural and catalyst in premix tank 1 and accelerate the mixing of furfural and catalyst.

[0029] Among them, such as Figure 1 , Figure 2 As shown, a support frame 101 is fixedly connected to the periphery of the premix tank 1, and a fixed platform 102 is fixedly connected to the bottom end of the support frame 101; the fixed platform 102 and the support frame 101 provide support for the premix tank 1.

[0030] Among them, such as Figure 4 , Figure 5 As shown, a hollow jacket 204 is fixedly connected to the center of the periphery of the reaction vessel 2, and the feed end of the furfural coil 202 extends outward through the hollow jacket 204. In the initial stage of the reaction, high-temperature steam is introduced into the hollow jacket 204 to heat the inside of the reaction vessel 2 and promote the catalytic hydrogenation reaction. After the temperature inside the reaction vessel 2 rises, the introduction of high-temperature steam is stopped, and the hollow jacket 204 assists in heat dissipation.

[0031] Among them, such as Figure 1-3 As shown, a discharge pipe 203 is fixedly connected to the upper part of the reaction tank 2 near the premix tank 1. The premix tank 1 is equipped with a discharge coil 104 located around the stirring blade 401 in a top view. The inlet and outlet ends of the discharge coil 104 are fixedly connected to the premix tank 1, and the inlet end of the discharge coil 104 is fixedly connected to the discharge pipe 203. The liquid level in reaction tank 2 is lower than the suction ring 502 and higher than the discharge pipe 203. After the reaction is complete, the generated furfuryl alcohol is discharged from reaction tank 2 through the discharge pipe 203. At the same time, hydrogen will not be discharged from the discharge pipe 203. Due to the upward movement of hydrogen in the reactor, it will push the generated furfuryl alcohol upward. The furfuryl alcohol flows from the discharge pipe 203 into the discharge coil 104 and from the discharge end of the discharge coil 104 into the collection device. The newly generated furfuryl alcohol has a high temperature. While flowing through the discharge coil 104, it heats the furfural and catalyst in the premix tank 1, accelerates the catalytic reaction of furfural and its mixing with the catalyst, and lowers the temperature of the furfuryl alcohol to facilitate subsequent processing.

[0032] The working principle of this embodiment is as follows: During furfuryl alcohol production, furfural and catalyst are first added to the premixing tank 1 through the feed pipe 103. The motor 402 is then started, and its output shaft rotates, driving the stirring shaft 4 and stirring blade 401 to rotate, thus mixing the furfural and catalyst in the premixing tank 1. Subsequently, the premixed furfural and catalyst are introduced into the reaction tank 2 through the furfural coil 202. Simultaneously, hydrogen gas is introduced into the reaction tank 2 through the hydrogen coil 201. Since the furfural inlet pipe 2021 is higher than the hydrogen inlet pipe 2011, and the hydrogen gas rises, the introduced furfural, catalyst, and hydrogen gas will fully contact each other for reaction. Simultaneously, the stirring blade 504 rotates to stir the furfural, catalyst, and hydrogen gas, accelerating the mixing reaction process. In the initial stage of the reaction, high-temperature steam is introduced into the hollow jacket 204 to heat the inside of the reaction tank 2, promoting the catalytic hydrogenation reaction. Since the catalytic hydrogenation reaction of furfural is a strongly exothermic reaction, the temperature inside the reaction tank 2 gradually increases. When it reaches a certain temperature, the flow of high-temperature steam is stopped, and the hollow jacket 204 assists in heat dissipation. When hydrogen flows through the hydrogen coil 201, and furfural and catalyst flow through the furfural coil 202, they are heated, absorbing excess heat in the reaction tank 2 and increasing the reaction rate during subsequent reactions. This prevents the temperature inside the reaction tank 2 from becoming too high and causing side reactions. As the hydrogen moves upward in the reactor, it pushes the generated furfuryl alcohol upward. After rising, the furfuryl alcohol flows from the discharge pipe 203 into the discharge coil 104 and from the discharge end of the discharge coil 104 into the collection device. The newly generated furfuryl alcohol is at a high temperature. While flowing through the discharge coil 104, it heats the furfural and catalyst in the premixing tank 1, accelerating the catalytic reaction of furfural and its mixing with the catalyst, and lowering the temperature of the furfuryl alcohol for easier subsequent processing. Specific Implementation Example 2

[0033] Please see Figure 2-7 Based on the first specific embodiment, the outlet of the furfural inlet pipe 2021 faces the rotation path of the stirring blade 2 504. A hydrogen channel 5011 is opened inside the rotating shaft 501. An air intake ring 502 is fixedly connected to the circumference of the rotating shaft 501 at the top of the hydrogen channel 5011. An air inlet 5021 is opened through the circumference of the air intake ring 502. The air inlet 5021 is connected to the hydrogen channel 5011. A gas chamber 5031 connected to the hydrogen channel 5011 is opened inside the turntable 503. An air outlet 5032 connected to the gas chamber 5031 is opened through the top of the turntable 503. Since the outlet of the furfural inlet pipe 2021 faces the rotation path of the stirring blade 504, the furfural and catalyst will impact the stirring blade 504 when they are introduced into the reactor, causing the stirring blade 504 to rotate. No additional power device is needed. The rotation of the stirring blade 504 drives the turntable 503, the rotating shaft 501 and the suction ring 502 to rotate. Due to the rotation of the air inlet 5021 on the suction ring 502, a negative pressure is formed around the suction ring 502, which absorbs the fully reacted hydrogen in the upper part of the reactor. The hydrogen enters the gas chamber 5031 through the air inlet 5021 and the hydrogen channel 5011 and is discharged from the air outlet 5032, and moves upward again to react with the furfural and catalyst in the reactor.

[0034] Among them, such as Figure 1-3 As shown, a metering pump 3 is fixedly connected to the top of the fixed platform 102 located on one side of the support frame 101. The water inlet of the metering pump 3 is fixedly connected to the bottom of the premix tank 1, and the water outlet of the metering pump 3 is fixedly connected to the feed inlet of the furfural coil 202. The metering pump 3 is started, which draws furfural and catalyst from the premix tank 1 into the furfural coil 202. At the same time, the flow rate of furfural and catalyst is metered, thereby controlling the amount of hydrogen introduced. Under the action of the metering pump 3, the flow rate of furfural and catalyst increases, increasing the impact force on the stirring blade 504, causing the stirring blade 504 to rotate rapidly, which in turn causes the suction ring 502 to rotate rapidly, generating a strong suction force on the hydrogen inside the reactor.

[0035] The working principle of this embodiment is as follows: After furfural and catalyst are premixed, metering pump 3 is started. Metering pump 3 draws furfural and catalyst from premix tank 1 into furfural coil 202. Under the action of metering pump 3, the flow rate of furfural and catalyst increases. Since the outlet of furfural inlet pipe 2021 faces the rotation path of stirring blade 504, furfural and catalyst will impact stirring blade 504 when introduced into the reactor, causing stirring blade 504 to rotate rapidly. The rotation of stirring blade 504 drives the turntable 503, rotating shaft 501 and suction ring 502 to rotate. Due to the rotation of air inlet 5021 on suction ring 502, a negative pressure is formed around suction ring 502, absorbing the fully reacted hydrogen in the upper part of the reactor. The hydrogen enters gas chamber 5031 through air inlet 5021 and hydrogen channel 5011 and is discharged from air outlet 5032, moving upward again to react with furfural and catalyst in the reactor. No power device is required, and the utilization rate of hydrogen is improved.

[0036] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A furfuryl alcohol dynamic tubular reactor, comprising a premixing tank (1), a reaction tank (2), and a stirring assembly (5); characterized in that: A feed pipe (103) is fixedly connected to the upper periphery of the premix tank (1). A reaction tank (2) is located on the periphery of the premix tank (1) away from the feed pipe (103). A hydrogen coil (201) is installed inside the reaction tank (2). The inlet end of the hydrogen coil (201) extends outward through the reaction tank (2). Two hydrogen inlet pipes (2011) are fixedly connected to the bottom end of the hydrogen coil (201). A furfural coil (202) is also installed inside the reaction tank (2). The feed end of the furfural coil (202) extends outward through the reaction tank (2). (202) has a furfural inlet pipe (2021) fixedly connected to the bottom end. The height of the furfural inlet pipe (2021) is higher than the height of the hydrogen inlet pipe (2011). The stirring assembly (5) includes a rotating shaft (501) located inside the reaction tank (2) and rotatably connected to the reaction tank (2). The bottom end of the rotating shaft (501) is fixedly connected to a turntable (503). The turntable (503) has two stirring blades (504) arranged in a ring array fixedly connected to its periphery. The hydrogen coil (201) and the furfural coil (202) are both located on the periphery of the stirring blades (504) when viewed from above. The outlet of the furfural inlet pipe (2021) faces the rotation path of the stirring blade (504). A hydrogen channel (5011) is provided inside the rotating shaft (501). A suction ring (502) is fixedly connected to the side of the rotating shaft (501) at the top of the hydrogen channel (5011). An air inlet (5021) is provided through the side of the suction ring (502). The air inlet (5021) is connected to the hydrogen channel (5011). A gas chamber (5031) is provided inside the turntable (503) and connected to the hydrogen channel (5011). An air outlet (5032) is provided through the top of the turntable (503) and connected to the gas chamber (5031).

2. The furfuryl alcohol dynamic tubular reactor according to claim 1, characterized in that: The premix tank (1) is rotatably connected to a stirring shaft (4). The lower part of the stirring shaft (4) is fixedly connected to a stirring blade (401) arranged in a ring array. The top of the premix tank (1) is fixedly connected to a motor (402). The output shaft of the motor (402) is connected to the end of the stirring shaft (4) which is close to it.

3. The furfuryl alcohol dynamic tubular reactor according to claim 1, characterized in that: The premix tank (1) is fixedly connected to a support frame (101) on its periphery, and a fixed platform (102) is fixedly connected to the bottom end of the support frame (101).

4. A furfuryl alcohol dynamic tubular reactor according to claim 3, characterized in that: A metering pump (3) is fixedly connected to the top of a fixed platform (102) located on one side of the support frame (101). The water inlet of the metering pump (3) is fixedly connected to the bottom of the premix tank (1), and the water outlet of the metering pump (3) is fixedly connected to the feed inlet of the furfural coil (202).

5. A furfuryl alcohol dynamic tubular reactor according to claim 1, characterized in that: A hollow jacket (204) is fixedly connected to the center of the periphery of the reaction vessel (2), and the feed end of the furfural coil (202) extends outward through the hollow jacket (204).

6. A furfuryl alcohol dynamic tubular reactor according to claim 1, characterized in that: The upper part of the reaction vessel (2) is connected to the discharge pipe (203) in a through-type fixed manner near the premixing tank (1).

7. A furfuryl alcohol dynamic tubular reactor according to claim 2, characterized in that: The premix tank (1) is provided with a discharge coil (104) located around the stirring blade (401) from a top view. The inlet and outlet ends of the discharge coil (104) are both fixedly connected to the premix tank (1) in a through manner, and the inlet end of the discharge coil (104) is fixedly connected to the discharge pipe (203) in a through manner.

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