Rectifying kettle for producing vinyl methyl ether

Abstract

The utility model relates to the technical field of vinyl methyl ether processing technology, propose a kind of rectifying kettle for vinyl methyl ether production, the present design includes kettle body subassembly, premixing feeding assembly, linkage assembly and complex mixing subassembly. The premixing feeding assembly realizes the forced premixing of acetylene and methanol in tube barrel by spiral conveying rod;Linkage assembly adopts synchronous belt drive and bevel gear meshing, so that feeding and stirring are synchronously operated;Complex mixing subassembly enhances gas suction by inclined blade, and cooperates with baffle to strengthen liquid circulation. The device innovatively combines raw material premixing with reaction mixing, solving the problem of uneven mixing in traditional equipment. Efficient mixing is achieved through mechanical linkage, significantly improving reaction efficiency and product purity. The specially designed spiral conveying premixing system and layered stirring structure ensure production safety while achieving continuous and stable high-efficiency production.

Description

Technical Field

[0001] This utility model relates to the field of vinyl methyl ether processing technology, specifically to a distillation kettle for vinyl methyl ether production. Background Technology

[0002] In the production of vinyl methyl ether (VME), the mixing of acetylene and methanol constructs a homogeneous reaction system, allowing the carbon-carbon triple bonds of acetylene and the methoxy groups of methanol to bind directionally under the action of a catalyst. This provides suitable feedstock concentration ratios and reaction medium conditions for subsequent gas-phase catalytic reactions, ensuring sufficient contact between acetylene and methanol molecules to improve the formation efficiency and selectivity of the target product (vinyl methyl ether). Furthermore, the dilution effect of methanol reduces the explosion risk of acetylene and stabilizes the reaction temperature, preventing localized overheating and side reactions (such as acetylene self-polymerization or excessive cracking). Simultaneously, by adjusting the mixing ratio, reaction kinetic parameters are optimized, allowing the reaction to proceed efficiently within a controllable range. The resulting mixture also facilitates subsequent distillation and separation processes—unreacted methanol can be economically and efficiently recycled with VME through the difference in boiling points. Thus, while ensuring production safety, this process systematically improves feedstock conversion rate, product purity, and process economy.

[0003] A search revealed that CN209810155U discloses a synthesis apparatus for vinyl methyl ether, comprising a synthesis vessel and a distillation column. The synthesis vessel is equipped with a self-priming stirrer, a first inlet at its lower end, and a first outlet at its upper end. The first outlet is connected to the distillation column via a pipeline and enters the distillation column through a second inlet. The distillation column has a methanol outlet; unreacted methanol flows out from the methanol outlet and returns to the synthesis vessel via a methanol return port to participate in the reaction again. A distributor is installed at the bottom of the synthesis vessel to disperse the raw materials. This invention introduces acetylene and methanol into the synthesis vessel from the bottom. The self-priming stirrer increases the contact between the gas and liquid phases, shortens the reaction time, and the gas phase enters the distillation column to separate the product. The methanol then returns to the synthesis vessel to react with the acetylene, achieving a continuous reaction and increasing production capacity.

[0004] The aforementioned apparatus for synthesizing vinyl methyl ether relies solely on a self-priming stirrer for gas-liquid mixing, resulting in poor mixing uniformity and affecting reaction efficiency. Furthermore, the design employs a fixed feeder, which prevents pre-mixing of raw materials, leading to uneven reaction. Utility Model Content

[0005] This invention proposes a distillation vessel for the production of vinyl methyl ether, which solves the problem of insufficient mixing efficiency of ethane and methanol in the prior art.

[0006] The technical solution of this utility model is as follows: a distillation kettle for the production of vinyl methyl ether, comprising a kettle body assembly, wherein the kettle body assembly includes a synthesis kettle; A premixed feeding assembly is installed outside the synthesis reactor and is capable of conveying acetylene and methanol into the synthesis reactor; A linkage component is installed outside the premixing feeding assembly and the synthesis vessel and can rotate in conjunction with the premixing feeding assembly; The complex mixing component is installed inside and outside the synthesis vessel and can rotate in conjunction with the linkage component to mix the medium inside the synthesis vessel.

[0007] Preferably, the vessel assembly further includes: The first discharge pipe and the second discharge pipe are fixedly connected to the upper and lower parts of the outside of the synthesis reactor.

[0008] Preferably, the premixed feeding assembly further includes: A side frame fixedly connected to the outside of the synthesis reactor; A tube or cylinder fixedly connected to the inside of the side frame; The tube and the synthesis reactor are fixedly connected and communicate with each other.

[0009] Preferably, the premixed feeding assembly further includes: A feed branch pipe is symmetrically and fixedly connected to the top of the tube; The feed branch pipe is connected to the tube.

[0010] Preferably, the premixed feeding assembly further includes: A main shaft rotatably connected to the inner and outer sides of the tube; A spiral conveyor rod is installed inside the tube; The spiral conveyor rod is fixedly connected to the main shaft.

[0011] Preferably, the premixed feeding assembly further includes: A motor that is fixedly installed on the outside of the side frame; The motor output end is fixedly connected to the main shaft.

[0012] Preferably, the linkage component includes: A secondary support sleeve is fixedly connected to the top of the synthesis reactor; The main support sleeve is fixedly connected to the top of the tube; A secondary rotating shaft is rotatably connected within the secondary support sleeve and the main support sleeve; The first conical tooth is fixedly connected to one end of the secondary rotating shaft.

[0013] Preferably, the linkage component further includes: The second synchronous pulley is fixedly connected to the outside of the secondary shaft; The first synchronous pulley is fixedly connected to the outside of the main shaft; A timing belt fitted onto the outside of the second and first timing pulleys; The synchronous belt is meshed with the first synchronous pulley and the second synchronous pulley.

[0014] Preferably, the composite component includes: Rotary shaft connected to the top of the synthesis reactor; A second conical tooth is fixedly connected to the top of the rotating shaft; The second conical tooth is in contact with the first conical tooth and is in a meshing rotatable connection.

[0015] Preferably, the composite component further includes: Six sets of inclined blades are fixedly connected in a ring to the upper outer side of the rotating shaft; Three sets of frame plates are fixedly connected in a ring to the lower part of the outer side of the rotating shaft; baffles are fixedly connected at equal intervals to the inner side of the frame plate; An arc plate fixedly connected to the outside of the frame plate.

[0016] The beneficial effects of this utility model are as follows: Innovation Advantage 1: Premixed Feeding System Areas for improvement: A spiral conveyor and tubular structure are added to force mixing of raw materials before they enter the reactor.

[0017] The acetylene and methanol are premixed by rotating a screw conveyor driven by a motor.

[0018] Addressing defects: This overcomes the problem of uneven mixing caused by raw materials directly entering the reactor, as described in the comparative document.

[0019] Second innovative advantage: Interconnected hybrid system Areas for improvement: The synchronous belt and bevel gear / linkage design are used to achieve synchronous feeding and mixing.

[0020] The mixing component enhances mixing through stratification using tilted blades and baffles.

[0021] Addressing defects: This solves the problem of low mixing efficiency caused by a single stirring method in the comparison files. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a schematic diagram of the overall device of this utility model. Figure 2This is a schematic diagram of the internal structure of the overall device of this utility model; Figure 3 for Figure 2 Enlarged view of region A; Figure 4 This is a schematic diagram of the composite component of this utility model; In the diagram: 1. Reactor body assembly; 11. Synthesis reactor; 111. First discharge pipe; 112. Second discharge pipe; 2. Premixed feeding assembly; 21. Side frame; 22. Tube; 221. Feed branch pipe; 23. Motor; 24. Main shaft; 241. Screw conveyor; 3. Linkage assembly; 31. Synchronous belt; 311. First synchronous pulley; 312. Second synchronous pulley; 32. Secondary shaft; 321. First conical tooth; 33. Main support frame; 34. Secondary support frame; 4. Compound mixing assembly; 41. Rotating shaft; 411. Second conical tooth; 42. Inclined blade; 43. Frame plate; 431. Baffle plate; 44. Arc plate. Detailed Implementation

[0024] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0025] For examples, please refer to Figures 1-4 The present invention provides a technical solution: a distillation vessel for the production of vinyl methyl ether, comprising a vessel body assembly 1, wherein the vessel body assembly 1 includes a synthesis vessel 11; A premixed feeding assembly 2 is located outside the synthesis reactor 11 and is capable of conveying acetylene and methanol into the synthesis reactor 11; A linkage component 3 is installed outside the premixing feeding assembly 2 and the synthesis kettle 11 and can rotate in conjunction with the premixing feeding assembly 2; A complex mixing component 4 is installed inside and outside the synthesis vessel 11 and can rotate in conjunction with the linkage component 3, and is used for mixing the medium inside the synthesis vessel 11; This design significantly improves the raw material mixing efficiency through premixed feeding and a linked mixing system, solving the problem of insufficient mixing efficiency for ethane and methanol in existing technologies.

[0026] The vessel body assembly 1 also includes: A first discharge pipe 111 and a second discharge pipe 112 are fixedly connected to the upper and lower parts of the outer side of the synthesis reactor 11; The gaseous medium and liquid can be discharged through the first discharge pipe 111 and the second discharge pipe 112 respectively.

[0027] The premixed feeding assembly 2 also includes: Side frame 21 is fixedly connected to the outside of the synthesis reactor 11; The tube 22 is fixedly connected to the inside of the side frame 21; The tube 22 and the synthesis vessel 11 are fixedly connected and communicate with each other.

[0028] The premixed feeding assembly 2 also includes: The feed branch pipe 221 is symmetrically and fixedly connected to the top of the tube 22; The feed branch pipe 221 is connected to the tube 22; The continuous injection of acetylene and methanol can be accomplished through the feed branch pipe 221.

[0029] The premixed feeding assembly 2 also includes: The main rotating shaft 24 is rotatably connected to the inner and outer sides of the tube 22; A screw conveyor 241 is installed inside the tube 22; The screw conveyor rod 241 is fixedly connected to the main shaft 24; The pre-mixing of acetylene and methanol during the conveying process can be completed by the high-speed rotation of the screw conveyor 241 in conjunction with the main rotating shaft 24 within the tube 22.

[0030] The premixed feeding assembly 2 also includes: Motor 23 is fixedly installed on the outside of side frame 21; The output end of motor 23 is fixedly connected to the main shaft 24.

[0031] Linkage component 3 includes: A secondary support sleeve 34 is fixedly connected to the top of the synthesis reactor 11; The main support sleeve 33 is fixedly connected to the top of the tube 22; A secondary rotating shaft 32 is rotatably connected within the secondary support sleeve 34 and the main support sleeve 33; The first conical tooth 321 is fixedly connected to one end of the secondary rotating shaft 32; The auxiliary support sleeve 34, in conjunction with the main support sleeve 33, can support and rotate the auxiliary rotating shaft 32.

[0032] Linkage component 3 also includes: The second synchronous pulley 312 is fixedly connected to the outside of the auxiliary shaft 32; The first synchronous pulley 311 is fixedly connected to the outside of the main shaft 24; Synchronous belt 31 is fitted onto the outside of the second synchronous pulley 312 and the first synchronous pulley 311; This design allows the secondary rotating shaft 32 to rotate synchronously with the main rotating shaft 24.

[0033] The synchronous belt 31 is meshed with the first synchronous pulley 311 and the second synchronous pulley 312.

[0034] The complex hybrid component 4 includes: Rotary shaft 41 is connected to the top of the synthesis vessel 11; The second conical tooth 411 is fixedly connected to the top of the rotating shaft 41; The second conical tooth 411 is in contact with the first conical tooth 321 and is in a meshing rotatable connection.

[0035] The hybrid component 4 also includes: Six sets of inclined blades 42 are fixedly connected in a ring to the upper outer side of the rotating shaft 41; The gas intake capacity can be enhanced by tilting the blades 42; Three sets of frame plates 43 are fixedly connected in a ring to the lower part of the outer side of the rotating shaft 41; Baffles 431 are fixedly connected at equal intervals and obliquely to the inner side of the frame plate 43; An arc plate 44 is fixedly connected to the outside of the frame plate 43; The circulation of liquid at the bottom of the synthesis vessel 11 can be enhanced by using baffle 431 in conjunction with arc plate 44.

[0036] First, acetylene and methanol are connected to two sets of feed branch pipes 221 and continuously fed in. Then, the motor 23 is started to drive the main shaft 24 and the screw conveyor 241 to rotate inside the tube 22. Through this step, acetylene and methanol can be continuously fed into the synthesis reactor 11, and the screw conveyor 241 is used to complete the premixing of acetylene and methanol during the feeding process. Specifically, when the tube 22 and the first synchronous pulley 311 are rotating, the synchronous belt 31 located outside the first synchronous pulley 311 will drive the second synchronous pulley 312 to mesh and transmit, thereby causing the secondary shaft 32 located in the middle of the main support sleeve 33 and the secondary support sleeve 34 to rotate synchronously under the action of the second synchronous pulley 312. At this time, the first conical tooth 321 located at the end of the secondary shaft 32 rotates synchronously. When the first conical tooth 321 rotates, it meshes with the second conical tooth 411 and drives the rotating shaft 41 to rotate synchronously inside the synthesis vessel 11. At this time, the inclined blade 42 located on the upper part of the outer side of the rotating shaft 41, as well as the baffle plate 431 and the arc plate 44 located below, rotate synchronously. The inclined blade 42 can enhance the gas intake capacity, while the baffle plate 431 and the arc plate 44 can enhance the liquid circulation at the bottom of the synthesis vessel 11. Finally, the mixed gas and liquid are discharged outward from the first discharge pipe 111 and the second discharge pipe 112, respectively.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A distillation vessel for the production of vinyl methyl ether, comprising a vessel body assembly (1), characterized in that: The reactor assembly (1) includes a synthesis reactor (11); A premixed feeding assembly (2) is disposed outside the synthesis vessel (11) and is capable of feeding acetylene and methanol into the synthesis vessel (11). A linkage component (3) is disposed outside the premixing feeding assembly (2) and the synthesis vessel (11) and is capable of rotating in conjunction with the premixing feeding assembly (2). The complex mixing component (4) is installed inside and outside the synthesis vessel (11) and can rotate in conjunction with the linkage component (3) to mix the medium inside the synthesis vessel (11).

2. The distillation vessel for producing vinyl methyl ether according to claim 1, characterized in that, The vessel assembly (1) further includes: The first discharge pipe (111) and the second discharge pipe (112) are fixedly connected to the upper and lower parts of the outside of the synthesis vessel (11).

3. The distillation vessel for producing vinyl methyl ether according to claim 1, characterized in that, The premixed feeding assembly (2) also includes: A side frame (21) is fixedly connected to the outside of the synthesis vessel (11); A tube (22) is fixedly connected to the inside of the side frame (21); The tube (22) and the synthesis vessel (11) are fixedly connected and communicate with each other.

4. The distillation vessel for producing vinyl methyl ether according to claim 3, characterized in that, The premixed feeding assembly (2) also includes: The feed branch pipe (221) is symmetrically fixedly connected to the top of the tube (22); The feed branch pipe (221) is connected to the tube (22).

5. A distillation vessel for producing vinyl methyl ether according to claim 3, characterized in that, The premixed feeding assembly (2) also includes: The main shaft (24) is rotatably connected to the inner and outer sides of the tube (22); A spiral conveyor rod (241) is installed inside the tube (22); The spiral conveyor rod (241) is fixedly connected to the main shaft (24).

6. The distillation vessel for producing vinyl methyl ether according to claim 3, characterized in that, The premixed feeding assembly (2) also includes: A motor (23) is fixedly installed on the outside of the side frame (21); The output end of the motor (23) is fixedly connected to the main shaft (24).

7. The distillation vessel for producing vinyl methyl ether according to claim 3, characterized in that, The linkage component (3) includes: A secondary support sleeve (34) is fixedly connected to the top of the synthesis vessel (11). The main support sleeve (33) is fixedly connected to the top of the tube (22); A secondary rotating shaft (32) is rotatably connected within the secondary support sleeve (34) and the main support sleeve (33). The first conical tooth (321) is fixedly connected to one end of the secondary shaft (32).

8. The distillation vessel for producing vinyl methyl ether according to claim 7, characterized in that, The complex hybrid component (4) includes: Rotate the rotating shaft (41) connected to the top of the synthesis vessel (11). A second conical tooth (411) is fixedly connected to the top of the rotating shaft (41); The second conical tooth (411) is in contact with the first conical tooth (321) and is in a meshing rotational connection.

9. A distillation vessel for producing vinyl methyl ether according to claim 8, characterized in that, The complex hybrid component (4) further includes: Six sets of inclined blades (42) are fixedly connected in a ring to the upper part of the outer side of the rotating shaft (41); Three sets of frame plates (43) are fixedly connected in a ring to the lower part of the outer side of the rotating shaft (41); baffles (431) are fixedly connected at equal intervals to the inner side of the frame plate (43). An arc plate (44) is fixedly connected to the outside of the frame plate (43).

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