Carbonylation reaction kettle

Abstract

The carbonylation reaction kettle comprises a reaction kettle main body and a pretreatment assembly, the reaction kettle main body comprises a gas inlet pipe and a gas outlet pipe, the pretreatment assembly is installed on the gas inlet pipe, the pretreatment assembly comprises a shell and a connecting part, the shell is connected to the top of the gas inlet pipe, and the connecting part is connected to the gas outlet pipe. The shell is communicated with the interior of the air inlet pipe, the connecting part is suitable for being connected with a conveying pipeline, the pretreatment assembly further comprises a drying assembly, the drying assembly comprises a rotatable rotating pipe and a spiral disc, the rotating pipe is rotatably installed in the shell, the spiral disc is fixedly connected to the interior of the rotating pipe, and the spiral disc is fixedly connected to the interior of the rotating pipe. A water absorbing material is arranged on the surface of the spiral disc, the spiral disc is suitable for adsorbing excessive water in passing gas, and the pretreatment device is additionally arranged between the gas inlet pipe of the reaction kettle and the conveying pipe of the conveying device, so that serious pollution caused by the gas in the conveying pipe is avoided, and the working quality of the reaction kettle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a carbonylation reaction kettle. Background Art

[0002] Currently, in the chemical industry, carbonylation reaction is an important organic synthesis method, widely used in the preparation of compounds such as aldehydes, ketones, carboxylic acids and their derivatives. This type of reaction usually requires carbon monoxide and organic compounds to react in the presence of a catalyst under specific temperature and pressure conditions. However, in the actual production process, the air intake system of the carbonylation reactor often faces a series of technical challenges, especially in the gas pretreatment link.

[0003] After searching, it was found that the Chinese utility model patent with authorization announcement number CN203140016U discloses a carbonylation reactor. This patent sets up multiple rows of air intake and exhaust pipe systems in the reactor body, so that the reaction gas passes through a longer path in the reactor and achieves sufficient heat exchange with the generated gas in the reaction chamber. This design aims to improve the reaction rate and carbonylation rate while reducing energy consumption. However, this patent does not pre-treat the gas before the gas enters the equipment. During the transportation process, the gas comes into contact with impurities, moisture, oxygen or other harmful gases in the pipeline. These pollutants will enter the reactor along with the gas, seriously affecting the selectivity and yield of the reaction, and may even trigger side reactions and generate undesirable by-products. Secondly, the gas is not fully purified, and the impurities in it will also have a poisonous effect on the catalyst, shortening the service life of the catalyst and increasing production costs. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to overcome the defects in the prior art. By adding a pretreatment device between the air inlet pipe of the reactor and the delivery pipe of the delivery device, serious pollution caused by gas in the delivery pipe is avoided, and the working quality of the reactor is improved.

[0005] In order to solve the above technical problems, the technical solution of the utility model is a carbonylation reactor, comprising a reactor body and a pretreatment component, wherein the reactor body comprises an air inlet pipe and an air outlet pipe;

[0006] The pre-treatment component is installed on the air intake pipe, and the pre-treatment component includes a shell and a connecting part;

[0007] The housing is connected to the top of the air inlet pipe, the housing is communicated with the interior of the air inlet pipe, and the connecting portion is suitable for connecting to a delivery pipe;

[0008] The pretreatment assembly further includes a drying assembly, the drying assembly including a rotatable rotating tube and a spiral disk, the rotating tube being adapted to be driven to rotate by the driving assembly;

[0009] The rotating tube is rotatably mounted inside the shell, the spiral disk is fixedly connected to the inside of the rotating tube, and a water-absorbing material is provided on the surface of the spiral disk. The spiral disk is suitable for absorbing excess moisture in the passing gas.

[0010] Furthermore, the pretreatment assembly further includes a gear box, which is connected to one side of the housing and communicates with the interior of the housing;

[0011] The drive assembly includes a drive device 1 and a driving gear 1. The drive device 1 is located outside the gear box, and the driving gear 1 is rotatably installed inside the gear box. The drive device 1 is suitable for connecting with the driving gear 1 through a coupling and driving the driving gear 1 to rotate.

[0012] Furthermore, the drying assembly further includes a base and a driven gear 1, wherein the base is fixedly connected to the housing, the driven gear 1 is rotatably mounted on the top of the base, and the driven gear 1 is meshed with the driving gear 1;

[0013] A rotating disk is connected to the top of the driven gear 1, and the outer peripheral surface of the rotating disk is connected to the inner wall of the housing in a rotating sealed manner;

[0014] The top of the turntable is connected with a connecting rod, and the connecting rod is connected to the turn pipe. The turntable is hollow and is suitable for guiding the gas passing through the spiral disk to the inside of the air inlet pipe.

[0015] Furthermore, the pretreatment component further comprises a filter component, the filter component comprising a fixed disk, a sealing plate and at least one self-rotating drum, the fixed disk being rotatably mounted inside the rotating disk, the top of the self-rotating drum being connected to the bottom of the fixed disk via a rotating shaft, the sealing plate being fixedly connected to the inside of the base, the bottom of the self-rotating drum being connected to the top of the sealing plate via a rotating shaft, the sealing plate and the fixed disk both being provided with through slots penetrating therethrough, the through slots corresponding to the self-rotating drum;

[0016] The inner ring of the driven gear 1 is provided with internal teeth, and a mating gear is fixedly sleeved on the outer circumference of the rotating drum. The mating gear is meshed with the internal teeth, and the driven gear 1 is suitable for driving the mating gear to rotate to drive the rotating drum to rotate;

[0017] The self-rotating cylinder is hollow, and grids are provided at two openings of the self-rotating cylinder. Activated carbon is provided inside the two grids.

[0018] Furthermore, a partition is connected to the interior of the rotating drum, and the partition is located between the two grids. The partition is suitable for dividing the internal space of the rotating drum, and the activated carbon is arranged in the divided area separated by the partition.

[0019] Furthermore, a jacket is provided on the outside of the reactor body, and a cooling assembly is provided on the jacket. The cooling assembly includes a water inlet pipe, a water outlet pipe, a heat exchanger and a circulation pump. The water inlet pipe and the water outlet pipe are connected to the jacket;

[0020] The heat exchanger and the circulation pump are connected between the water inlet pipe and the water outlet pipe;

[0021] The circulating pump is suitable for driving the water in the jacket to circulate;

[0022] The heat exchanger is suitable for exchanging heat with water passing therethrough.

[0023] Furthermore, a mixing assembly is provided inside the jacket, and the mixing assembly includes a second driving device, a second driving gear, a second driven gear and at least one stirring rod;

[0024] The second driving device is located outside the jacket, and the second driving gear is rotatably mounted inside the jacket. The second driving device is suitable for connecting with the second driving gear through a coupling and driving the second driving gear to rotate;

[0025] The second driven gear is connected to the inside of the jacket, the second driven gear is meshed with the second driving gear, and the stirring rod is connected to the bottom of the second driven gear;

[0026] The second driven gear is adapted to be driven to rotate by the second driving gear to drive the stirring rod to rotate with the axis of the second driven gear as the center.

[0027] Furthermore, the mixing assembly further includes a stirring blade connected to the outer peripheral surface of the stirring rod.

[0028] By adopting the above technical solution, the utility model has the following beneficial effects:

[0029] Through the setting of the rotating tube and the spiral disk, the self-rotating spiral disk can make the gas flow evenly on the disk surface, avoiding the gas from being retained in certain areas. The design of the spiral disk makes the path for the gas to pass longer. When passing through the spiral disk, the excess moisture inside the gas will be absorbed by the water-absorbing material, thereby achieving a drying effect.

[0030] By setting the diameters, the dried gas can enter the interior of each rotating drum at the same time. The activated carbon set inside the rotating drum can adsorb harmful substances in the gas and increase the gas processing capacity.

[0031] By setting the partition, after the gas enters the rotating drum, it is again separated into different diameters inside the rotating drum, which further increases the contact area between the gas and the activated carbon and improves the gas purification effect.

[0032] The self-rotating drum is set to keep the activated carbon inside in an active state, avoiding the same surface from always being in contact with the gas, thereby improving the utilization rate of the activated carbon and the purification effect.

[0033] By setting up the mixing assembly, when the water circulates inside the jacket to cool the reactor, the water inside is continuously stirred, which can improve the fluid mixing effect in the jacket and ensure the uniformity of the cooling medium and the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall structure of the reactor of the present invention;

[0035] Figure 2 This is a schematic diagram of the overall structure of the pretreatment component of the present utility model;

[0036] Figure 3 This is a schematic diagram of the internal structure of the shell of the utility model;

[0037] Figure 4 This is a schematic diagram of the drying component structure of the present utility model;

[0038] Figure 5 This is a schematic diagram of the structure distribution of the filter assembly of the present utility model;

[0039] Figure 6 This is a schematic diagram of the rotating structure of the self-rotating drum of the present utility model;

[0040] Figure 7 This is a schematic diagram of the internal structure of the self-rotating drum of the present utility model;

[0041] Figure 8 This is a schematic diagram of the internal structure of the jacket of the present utility model;

[0042] Figure 9 For the utility model Figure 8 Enlarged view of point A in the middle.

[0043] In the figure: 1. Reactor body; 2. Air inlet pipe; 3. Air outlet pipe;

[0044] 4. Pretreatment assembly; 41. Housing; 42. Connecting portion; 43. Gear box;

[0045] 5. Drying assembly; 51. Driving gear 1; 52. Driving device 1; 53. Base; 54. Driven gear 1; 55. Rotating disk; 56. Connecting rod; 57. Rotating tube; 58. Spiral disk;

[0046] 6. Filter assembly; 61. Internal teeth; 62. Rotating drum; 63. Matching gear; 64. Grid; 65. Fixed plate; 66. Partition plate; 67. Closing plate;

[0047] 7. Jacket; 71. Water inlet pipe; 72. Water outlet pipe;

[0048] 8. Mixing assembly; 81. Driving device 2; 82. Driving gear 2; 83. Driven gear 2; 84. Stirring rod; 85. Stirring blade. DETAILED DESCRIPTION

[0049] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0050] Example 1: Figure 1-4 As shown, a carbonylation reactor comprises a reactor body 1 and a pretreatment assembly 4, wherein the reactor body 1 comprises an air inlet pipe 2 and an air outlet pipe 3;

[0051] The pre-treatment component 4 is installed on the air intake pipe 2, and the pre-treatment component 4 includes a housing 41 and a connecting portion 42;

[0052] The housing 41 is connected to the top of the air inlet pipe 2, the housing 41 is communicated with the interior of the air inlet pipe 2, and the connecting portion 42 is suitable for connecting to the delivery pipeline;

[0053] The pre-treatment assembly 4 further includes a drying assembly 5, which includes a rotatable rotating tube 57 and a spiral disk 58, wherein the rotating tube 57 is adapted to be driven to rotate by the driving assembly;

[0054] The rotating tube 57 is rotatably installed inside the housing 41, and the spiral disk 58 is fixedly connected to the inside of the rotating tube 57. The surface of the spiral disk 58 is provided with a water-absorbing material, and the spiral disk 58 is suitable for absorbing excess moisture in the passing gas.

[0055] like Figure 3-4 As shown, the pre-treatment assembly 4 further includes a gear box 43, which is connected to one side of the housing 41 and communicates with the interior of the housing 41;

[0056] The driving assembly includes a driving device 52 and a driving gear 51. The driving device 52 is located outside the gear box 43, and the driving gear 51 is rotatably installed inside the gear box 43. The driving device 52 is suitable for connecting with the driving gear 51 through a coupling and driving the driving gear 51 to rotate.

[0057] like Figure 3-4 As shown, the drying assembly 5 further includes a base 53 and a driven gear 1 54. The base 53 is fixedly connected to the housing 41. The driven gear 1 54 is rotatably mounted on the top of the base 53. The driven gear 1 54 is meshed with the driving gear 1 51.

[0058] A rotary disk 55 is connected to the top of the driven gear 1 54, and the outer peripheral surface of the rotary disk 55 is connected to the inner wall of the housing 41 in a rotary sealing manner;

[0059] A connecting rod 56 is connected to the top of the turntable 55 , and the connecting rod 56 is connected to the turntable 57 . The turntable 55 is hollow and is suitable for guiding the gas passing through the spiral disk 58 to the inside of the intake pipe 2 .

[0060] like Figure 5-7 As shown, the pretreatment assembly 4 also includes a filter assembly 6, which includes a fixed disk 65, a sealing plate 67, and at least one self-rotating drum 62. The fixed disk 65 is rotatably mounted inside the turntable 55, and the top of the self-rotating drum 62 is connected to the bottom of the fixed disk 65 by a rotating shaft. The sealing plate 67 is fixedly connected to the inside of the base 53, and the bottom of the self-rotating drum 62 is connected to the top of the sealing plate 67 by a rotating shaft. The sealing plate 67 and the fixed disk 65 are both provided with through grooves that penetrate through themselves, and the through grooves correspond to the self-rotating drum 62.

[0061] The inner ring of the driven gear 1 54 is provided with internal teeth 61, and the outer circumference of the rotating drum 62 is fixedly provided with a mating gear 63. The mating gear 63 is meshed with the internal teeth 61. The driven gear 1 54 is adapted to drive the mating gear 63 to rotate, thereby driving the rotating drum 62 to rotate.

[0062] The self-rotating drum 62 is hollow, and grids 64 are provided at the two openings of the self-rotating drum 62 . Activated carbon is provided inside the two grids 64 .

[0063] like Figure 7 As shown, a partition 66 is connected to the interior of the rotating drum 62 , and the partition 66 is located between the two grids 64 . The partition 66 is suitable for dividing the internal space of the rotating drum 62 , and the activated carbon is arranged in the divided areas separated by the partition 66 .

[0064] The working principle of this embodiment is as follows:

[0065] The reactor body 1 can be of a stirred type or a non-stirred type, and the selection is made according to actual needs. The working principle of the non-stirred type is that the gas enters the reactor through the air inlet pipe 2, and the reactants such as carbon monoxide and hydrocarbons are introduced at the same time. In a non-stirred environment, the flow and convection of the gas promote the reaction. The reactants undergo carbonylation reaction under the action of the catalyst to produce the target compound. After the reaction is completed, the product gas is discharged through the gas outlet and enters the subsequent separation and treatment process. If a stirred type is adopted, a stirring device should also be provided on the reactor. Depending on the choice of the reactor, the reactor also includes a feeding pipe, a discharge pipe and a diverter pipe, etc. This part is the existing technology and will not be described in detail here.

[0066] Regardless of the reactor type, a pre-treatment component 4 can be added to the air inlet pipe 2 to pre-treat the gas passing through it to ensure the quality and efficiency of the product and prevent untreated gas or gas contaminated by impurities inside the delivery pipe when it is fed through the delivery pipe after treatment from affecting the interior of the reactor body 1 and the reaction quality.

[0067] The housing 41 of the pre-treatment component 4 is connected to the air inlet pipe 2. The connection part 42 is used to connect with the delivery pipe. The connection part 42 can be connected by a flange or other connection method as needed to ensure stable connection and sealing.

[0068] After the pretreatment component 4 is connected to the air inlet pipe 2, the driving device 52 is started. The driving device 52 is used to drive the drying component 5 to start working. The driving device 52 drives the driving gear 51 to rotate, so that the mutually meshing driven gear 54 rotates on the base 53. The driven gear 54 drives the turntable 55 on the top to move together. The turntable 55 then drives the rotating tube 57 and the spiral disk 58 inside the rotating tube 57 to start rotating through the connecting rod 56. After entering the shell 41, the gas will first enter the interior of the rotating tube 57, pass through the spiral disk 58, and then enter the interior of the reactor body 1;

[0069] The rotation of the rotating tube 57 can drive the gas to flow evenly on the spiral disk 58, while also improving the mixing efficiency of different gases. The setting of the spiral disk 58 increases the path for the gas to pass through, and a water-absorbing material is set on the surface of the spiral disk 58. When the gas passes through, excess water will be absorbed, achieving a drying effect and avoiding affecting subsequent reactions.

[0070] After passing through the drying assembly 5, the gas flows into the space between the spiral disk 58 and the fixed disk 65. The gas is separated into different diameters at the fixed disk 65 and then enters different rotating drums 62 for filtration. Activated carbon is provided inside the rotating drums 62. Impurities in the gas may affect the efficiency and selectivity of the carbonylation reaction. The use of activated carbon treatment can improve the purity of the gas, thereby improving the yield and quality of the reaction. Other filter materials can also be provided inside the rotating drums 62 according to actual conditions.

[0071] After the driving device 52 is started, the self-rotating drum 62 will rotate by itself. The self-rotating state will improve the activity of the activated carbon particles inside, and prevent the activated carbon particles from being stationary for a long time and forming agglomerates. At the same time, the rotation of the self-rotating drum 62 increases the contact frequency between the activated carbon particles, and can better contact with pollutants in the gas or liquid, thereby improving the adsorption efficiency.

[0072] A partition 66 is also provided inside the rotating drum 62. The partition 66 divides the internal space of the rotating drum 62 into multiple areas. Activated carbon is provided in each area. This design can further separate the diameters of the passing gas, thereby increasing the contact area between the activated carbon and the gas and further improving the filtering effect.

[0073] Example 2: Figure 8 As shown, this embodiment further includes the following structure on the basis of the first embodiment: a jacket 7 is provided on the outside of the reactor body 1, and a cooling assembly is provided on the jacket 7. The cooling assembly includes a water inlet pipe 71, a water outlet pipe 72, a heat exchanger and a circulation pump. The water inlet pipe 71 and the water outlet pipe 72 are connected to the jacket 7;

[0074] The heat exchanger and the circulation pump are connected between the water inlet pipe 71 and the water outlet pipe 72;

[0075] The circulation pump is suitable for driving the water in the jacket 7 to circulate;

[0076] The heat exchanger is suitable for exchanging heat with water passing therethrough.

[0077] like Figure 8 As shown, a mixing assembly 8 is provided inside the jacket 7, and the mixing assembly 8 includes a second driving device 81, a second driving gear 82, a second driven gear 83 and at least one stirring rod 84;

[0078] The second driving device 81 is located outside the jacket 7, and the second driving gear 82 is rotatably installed inside the jacket 7. The second driving device 81 is suitable for connecting with the second driving gear 82 through a coupling and driving the second driving gear 82 to rotate;

[0079] The second driven gear 83 is connected to the inside of the jacket 7, the second driven gear 83 is meshed with the second driving gear 82, and the stirring rod 84 is connected to the bottom of the second driven gear 83;

[0080] The second driven gear 83 is adapted to be driven to rotate by the second driving gear 82 to drive the stirring rod 84 to rotate about the axis of the second driven gear 83 .

[0081] like Figure 9 As shown, the mixing assembly 8 further includes a stirring blade 85 , which is connected to the outer circumferential surface of the stirring rod 84 .

[0082] The working principle of this embodiment is as follows:

[0083] A jacket 7 is provided on the outside of the reactor body 1. Water can be injected into the jacket 7. The heat exchanger and the circulating pump are used to circulate the water inside the jacket 7 and exchange heat to dissipate heat from the reactor. This part is a prior art and will not be described in detail here. The setting needs to be used in conjunction with a temperature sensor. The temperature sensor can be selected to be provided inside the reactor or inside the jacket 7 according to actual needs, and can monitor the temperature of the reactor in real time.

[0084] A mixing assembly 8 is provided inside the jacket 7. The mixing assembly 8 can promote the continuous stirring and mixing of the water inside the jacket 7 to avoid temperature differences in the water flow, which would result in different cooling effects in different areas of the reactor, thereby ensuring the uniformity of the cooling medium and the heat exchange efficiency.

[0085] After the cooling circulation system inside the jacket 7 is started, the driving device 81 can be started. The driving device 81 drives the driving gear 82 to rotate, thereby driving the driven gear 83 to rotate through meshing. The stirring rod 84 located at the bottom of the driven gear 83 will be affected by the driven gear 83 and rotate with the driven gear 83 as the center, thereby continuously stirring the water inside the jacket 7, promoting mixing, and improving the uniformity of the cooling effect.

[0086] On this basis, stirring blades 85 are further provided on the outer peripheral surface of the stirring rod 84. The stirring blades 85 increase the contact area between the stirring rod 84 and the water flow, further improving the stirring and mixing effect.

[0087] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A carbonylation reactor, comprising a reactor body (1) and a pretreatment assembly (4), wherein the reactor body (1) comprises an air inlet pipe (2) and an air outlet pipe (3); Its characteristics are: The pre-treatment component (4) is mounted on the air intake pipe (2), and the pre-treatment component (4) comprises a housing (41) and a connecting portion (42); The outer shell (41) is connected to the top of the air inlet pipe (2), the outer shell (41) is in communication with the interior of the air inlet pipe (2), and the connecting portion (42) is suitable for connection to a delivery pipeline; The pretreatment component (4) further includes a drying component (5), wherein the drying component (5) includes a rotatable rotating tube (57) and a spiral disk (58), and the rotating tube (57) is adapted to be driven to rotate by the driving component; The rotating tube (57) is rotatably mounted inside the housing (41), and the spiral disk (58) is fixedly connected to the inside of the rotating tube (57). A water-absorbing material is provided on the surface of the spiral disk (58), and the spiral disk (58) is suitable for absorbing excess moisture in the passing gas.

2. The carbonylation reactor according to claim 1, characterized in that: The pretreatment assembly (4) further includes a gear box (43), the gear box (43) being connected to one side of the housing (41), and the gear box (43) being in communication with the interior of the housing (41); The driving assembly includes a driving device 1 (52) and a driving gear 1 (51), wherein the driving device 1 (52) is located outside the gear box (43), and the driving gear 1 (51) is rotatably mounted inside the gear box (43). The driving device 1 (52) is suitable for being connected to the driving gear 1 (51) through a coupling and driving the driving gear 1 (51) to rotate.

3. The carbonylation reactor according to claim 2, characterized in that: The drying assembly (5) further includes a base (53) and a driven gear (54), wherein the base (53) is fixedly connected to the housing (41), and the driven gear (54) is rotatably mounted on the top of the base (53), and the driven gear (54) is meshedly connected to the driving gear (51); A rotating disk (55) is connected to the top of the driven gear 1 (54), and the outer peripheral surface of the rotating disk (55) is connected to the inner wall of the housing (41) in a rotating sealed manner; The top of the turntable (55) is connected to a connecting rod (56), and the connecting rod (56) is connected to the turntable (57). The turntable (55) is hollow and is suitable for guiding the gas passing through the spiral disk (58) into the interior of the intake pipe (2).

4. The carbonylation reactor according to claim 3, characterized in that: The pretreatment component (4) further includes a filter component (6), the filter component (6) including a fixed disk (65) and a sealing plate (67) and at least one self-rotating drum (62), the fixed disk (65) being rotatably mounted inside the rotating disk (55), the top of the self-rotating drum (62) being connected to the bottom of the fixed disk (65) via a rotating shaft, the sealing plate (67) being fixedly connected to the inside of the base (53), the bottom of the self-rotating drum (62) being connected to the top of the sealing plate (67) via a rotating shaft, the sealing plate (67) and the fixed disk (65) both being provided with through slots penetrating therethrough, the through slots corresponding to the self-rotating drum (62); An inner ring of the driven gear (54) is provided with an inner tooth (61), and a mating gear (63) is fixedly sleeved on the outer peripheral surface of the self-rotating cylinder (62), and the mating gear (63) is meshedly connected with the inner tooth (61). The driven gear (54) is suitable for driving the mating gear (63) to rotate to drive the self-rotating cylinder (62) to rotate. The self-rotating cylinder (62) is hollow, and grids (64) are provided at both openings of the self-rotating cylinder (62), and activated carbon is provided inside the two grids (64).

5. The carbonylation reactor according to claim 4, characterized in that: A partition (66) is connected to the interior of the self-rotating drum (62), and the partition (66) is located between the two grids (64). The partition (66) is suitable for dividing the internal space of the self-rotating drum (62), and the activated carbon is arranged in the divided area separated by the partition (66).

6. The carbonylation reactor according to claim 1, characterized in that: A jacket (7) is provided on the outside of the reactor body (1), and a cooling assembly is provided on the jacket (7). The cooling assembly includes a water inlet pipe (71), a water outlet pipe (72), a heat exchanger, and a circulation pump. The water inlet pipe (71) and the water outlet pipe (72) are connected to the jacket (7); The heat exchanger and the circulation pump are connected between the water inlet pipe (71) and the water outlet pipe (72); The circulating pump is suitable for driving the water in the jacket (7) to circulate; The heat exchanger is suitable for exchanging heat with water passing therethrough.

7. The carbonylation reactor according to claim 6, characterized in that: A mixing assembly (8) is provided inside the jacket (7), and the mixing assembly (8) includes a second driving device (81), a second driving gear (82), a second driven gear (83), and at least one stirring rod (84); The second driving device (81) is located outside the jacket (7), and the second driving gear (82) is rotatably mounted inside the jacket (7). The second driving device (81) is suitable for connecting with the second driving gear (82) through a coupling and driving the second driving gear (82) to rotate; The second driven gear (83) is connected to the inside of the jacket (7), the second driven gear (83) is meshed with the second driving gear (82), and the stirring rod (84) is connected to the bottom of the second driven gear (83); The driven gear 2 (83) is adapted to be driven to rotate by the driving gear 2 (82) to drive the stirring rod (84) to rotate with the axis of the driven gear 2 (83) as the center.

8. The carbonylation reactor according to claim 7, characterized in that: The mixing assembly (8) further includes a stirring blade (85), wherein the stirring blade (85) is connected to the outer peripheral surface of the stirring rod (84).

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