A catalytic rectifying column for preparing methylal by reacting formaldehyde with methanol

Abstract

The utility model provides a catalytic rectifying column of formaldehyde and methanol reaction preparation methylal, include: rectifying subassembly, rectifying subassembly side end is equipped with processing assembly, the processing assembly inner wall is installed with drive assembly, drive assembly output is equipped with adjustable mixing subassembly, adjustable mixing subassembly inner wall sliding has elastic spoiler subassembly. The utility model provides a catalytic rectifying column of formaldehyde and methanol reaction preparation methylal, through the cooperation of adjustable mixing subassembly and elastic spoiler subassembly of setting, elastic spoiler subassembly can produce adaptive deformation with liquid flow, breaks the liquid flow dead zone, cooperates adjustable mixing subassembly's stirring action, can with the liquid of two density difference of formaldehyde and methanol of big difference stir even fast, avoids the stratification residue. Meanwhile, the paddle of stirring part support adjusts, can according to the concentration, viscosity etc. of formaldehyde methanol mixed solution material feature, the size of flexible adjustment paddle, to carry out the quick dispersion of stratified liquid.

Description

Technical Field

[0001] This utility model relates to the field of catalytic distillation equipment technology, and in particular to a catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal. Background Technology

[0002] In the chemical production field, the process of reacting formaldehyde with methanol to produce methylal is widely used. Reactive distillation technology, as a process that couples chemical reactions with distillation separation, plays a key role in this process.

[0003] Traditional equipment is less effective at mixing substances. Methanol and formaldehyde have different densities, and conventional stirring structures cannot achieve thorough and uniform mixing between the two. This results in large local concentration deviations within the reaction system when entering the distillation catalysis stage. In addition, the stirring components are mostly designed with fixed blades, which cannot be flexibly adjusted according to the different concentrations, viscosities, and other characteristics of formaldehyde and methanol.

[0004] Therefore, it is necessary to provide a catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides a catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal, which solves the problem that existing devices cannot flexibly adjust the mixing according to the characteristics of formaldehyde and methanol.

[0006] To solve the above-mentioned technical problems, the present invention provides a catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal, comprising: a distillation component, a processing component installed on the side end of the distillation component, a driving component installed on the inner wall of the processing component, an adjustable mixing component installed at the output end of the driving component, the adjustable mixing component being used for mixing the material on the inner wall of the processing component, and an elastic turbulence shroud being slidably mounted on the inner wall of the adjustable mixing component, the elastic turbulence shroud being used for turbulence of the material inside the component.

[0007] Preferably, the distillation assembly includes a distillation unit, the inner wall of which is respectively equipped with a conveying structure for the input and output of materials inside the distillation unit, the distillation unit is equipped with trays, and the top of the distillation unit is equipped with a reflux condenser.

[0008] Preferably, the processing component includes a hybrid architecture, a heating structure is installed on the side of the hybrid architecture for heating the material inside the hybrid architecture, and a fixed cover is installed on the top of the hybrid architecture.

[0009] Preferably, the drive assembly includes a drive structure, a drive rod is mounted on the output end of the drive structure, and a support structure is mounted on the side end of the drive structure, the support structure being used for structural support of the drive structure.

[0010] Preferably, the adjustable mixing component includes an annular mounting plate, with rotating frames installed on the inner wall of the annular mounting plate. A first stirring element is rotatably connected to the inner wall of the rotating frames, and a second stirring element slides on the inner wall of the first stirring element. The first stirring element, in conjunction with the second stirring element, can be used to stir the materials inside the component. An adjustment structure is installed on the inner wall of the first stirring element, and a fixed slider is provided on the inner wall of the adjustment structure and the second stirring element. A connecting structure is rotatably connected to the inner wall of the fixed slider, and the connecting structure is used for adjusting the position of the second stirring element.

[0011] Preferably, the elastic turbulence component includes a groove limiting structure and an elastic support member. A sliding support plate is slidably mounted on the inner wall of the groove limiting structure, and a turbulence structure is installed on the inner wall of the sliding support plate. The turbulence structure is used to handle the turbulence of materials inside the component, and the elastic support member is installed on the inner wall of the side end of the adjustable mixing component.

[0012] Compared with related technologies, the catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal provided by this utility model has the following beneficial effects:

[0013] This invention provides a catalytic distillation column for the production of methyl acetal from the reaction of formaldehyde and methanol. To improve the distillation efficiency during the catalytic distillation of formaldehyde and methanol, an adjustable mixing component and an elastic flow-dispersing component are used in conjunction. The elastic flow-dispersing component adapts to the liquid flow, breaking up dead zones in the liquid flow. Combined with the stirring action of the adjustable mixing component, it can quickly and evenly mix formaldehyde and methanol, two liquids with significantly different densities, preventing stratification and residue. Simultaneously, the stirring component supports blade adjustment, allowing for flexible adjustment of the blade size based on the concentration, viscosity, and other characteristics of the formaldehyde-methanol mixture to quickly disperse stratified liquids, thereby improving the overall efficiency of the equipment. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of a catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal, provided by this utility model;

[0015] Figure 2 for Figure 1 The diagram shows the structure of the processing component.

[0016] Figure 3 for Figure 1 The diagram shows the structural schematic of the conveying structure.

[0017] Figure 4 for Figure 1 The diagram shows the structure of the second stirring component;

[0018] Figure 5 for Figure 1The diagram shows the structure of the turbulence-inducing structure.

[0019] The diagram is labeled as follows: 1. Distillation assembly, 11. Distillation device, 12. Conveying structure, 13. Tray workpiece, 14. Condensation and reflux structure, 2. Processing assembly, 21. Mixing structure, 22. Heating structure, 23. Fixed cover plate, 3. Drive assembly, 31. Drive structure, 32. Drive rod, 33. Support structure, 4. Adjustable mixing assembly, 41. Annular mounting plate, 42. Rotating frame, 43. First stirring element, 44. Second stirring element, 45. Adjusting structure, 46. Fixed slider, 47. Connecting structure, 5. Elastic turbulence component, 51. Limiting tank structure, 52. Sliding support plate, 53. Turbulence structure, 54. Elastic support element. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of a preferred embodiment of a catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal, provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the processing component.

[0022] Figure 3 for Figure 1 The diagram shows the structural schematic of the conveying structure. Figure 4 for Figure 1 The diagram shows the structure of the second stirring component; Figure 5 for Figure 1 The diagram shows a schematic of the turbulence structure. A catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal includes: a distillation component 1, a processing component 2 installed on the side of the distillation component 1, a driving component 3 installed on the inner wall of the processing component 2, an adjustable mixing component 4 installed at the output end of the driving component 3, the adjustable mixing component 4 being used for mixing the material on the inner wall of the processing component 2, and an elastic turbulence-disrupting component 5 sliding on the inner wall of the adjustable mixing component 4, the elastic turbulence-disrupting component 5 being used for turbulence of the material inside the processing component 2.

[0023] The distillation assembly 1 includes a distillation device 11, and a conveying structure 12 is installed on the inner wall of the distillation device 11. The conveying structure 12 is used for the input and output of materials inside the distillation device 11. Tray workpieces 13 are installed inside the distillation device 11, and a condensation reflux structure 14 is installed on the top of the distillation device 11.

[0024] When the processed material is distilled, the steam, water, and steam recovery are all input and output from the conveying structure 12 at different heights to ensure the normal operation of the distillation device 11.

[0025] The distillation component 1 includes, but is not limited to, a plate column and a packed column; in this embodiment, the distillation component 1 is preferably a plate column.

[0026] The processing component 2 includes a hybrid architecture 21, a heating structure 22 is installed on the side of the hybrid architecture 21, the heating structure 22 is used to heat the material inside the hybrid architecture 21, and a fixed cover plate 23 is installed on the top of the hybrid architecture 21.

[0027] When two substances are added into the mixing structure 21, the heating structure 22 on the inner wall can heat the substances inside to achieve effective mixing.

[0028] The processing component 2 includes, but is not limited to, a filtration processing structure and a centrifugal processing structure; in this embodiment, the processing component 2 is preferably a centrifugal processing structure.

[0029] The drive assembly 3 includes a drive structure 31, a drive rod 32 is installed at the output end of the drive structure 31, and a support structure 33 is installed at the side end of the drive structure 31. The support structure 33 is used for structural support of the drive structure 31.

[0030] When mixing and stirring the internal substances, the drive structure 31 on the inner wall can directly drive the structure of the adjustable mixing component 4 to rotate, thereby fully mixing and stirring the internal substances.

[0031] The drive component 3 includes, but is not limited to, a motor drive component and a hydraulic drive component; in this embodiment, the drive component 3 is preferably a motor drive component.

[0032] The adjustable mixing component 4 includes an annular mounting plate 41. A rotating frame 42 is installed on the inner wall of the annular mounting plate 41. A first stirring element 43 is rotatably connected to the inner wall of the rotating frame 42. A second stirring element 44 slides on the inner wall of the first stirring element 43. The first stirring element 43 and the second stirring element 44 can be used to stir the materials inside the component 2. An adjustment structure 45 is installed on the inner wall of the first stirring element 43. A fixed slider 46 is provided on the inner wall of the adjustment structure 45 and the second stirring element 44. A connecting structure 47 is rotatably connected to the inner wall of the fixed slider 46. The connecting structure 47 is used for adjusting the position of the second stirring element 44.

[0033] When mixing the internal substances, the first stirring element 43 and the second stirring element 44 can rotate under the structural drive of the drive component 3 to stir the substances. In order to ensure sufficient mixing of the substances, the adjustment structure 45 on the inner wall can be rotated before stirring. Then the fixed slider 46 connected by the inner wall thread will slide in position. Under the rotational connection of the connecting structure 47, the second stirring element 44 will slide in structure to adjust the structural position of the second stirring element 44 to ensure the mixing effect of the internal substances.

[0034] The adjustable mixing component 4 includes, but is not limited to, blade size adjustable type and blade number adjustable type; in this embodiment, the adjustable mixing component 4 is preferably blade size adjustable type.

[0035] The elastic turbulence component 5 includes a limiting groove structure 51 and an elastic support member 54. A sliding support plate 52 is slidably mounted on the inner wall of the limiting groove structure 51. A turbulence structure 53 is installed on the inner wall of the sliding support plate 52. The turbulence structure 53 is used to handle the turbulence of the material inside the component 2. The elastic support member 54 is installed on the inner wall of the side end of the adjustable mixing component 4.

[0036] When the adjustable mixing component 4 is driven by the structure, the sliding support plate 52 on the inner wall will be subjected to the centrifugal force of the structure and slide along the inner wall of the limiting groove structure 51. At the same time, the turbulence structure 53 on the inner wall will elastically turbulent the internal material. In addition, the elastic support member 54 provided on the inner wall can elastically support the sliding support plate 52 to ensure the mixing of the material.

[0037] Among them, the elastic spoiler component 5 includes, but is not limited to, spring-type spoiler components and rubber-type spoiler components; in this embodiment, the spring-type spoiler component is used.

[0038] The working principle of the catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal provided by this utility model is as follows:

[0039] In the catalytic distillation of formaldehyde and methanol, the two substances are first added to the processing component 2. The drive component 3 on the inner wall synchronously drives the adjustable mixing component 4 to rotate, so as to fully mix and stir the substances inside the processing component 2. When the adjustable mixing component 4 rotates, the elastic turbulence component 5 on the inner wall will automatically slide elastically with centrifugal force to ensure the mixing effect of the substances inside the processing component 2. At the same time, during the initial stirring, the blade size of the adjustable mixing component 4 can be adjusted to quickly disperse the layered substances inside, so as to ensure the full integration of the substances. After the processing is completed, the substances are transported to the distillation component 1 through the valve for the next step of distillation catalysis.

[0040] Compared with related technologies, the catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal provided by this utility model has the following beneficial effects:

[0041] In the catalytic distillation of formaldehyde and methanol, to improve the distillation efficiency, an adjustable mixing component 4 and an elastic flow-dispersing component 5 are used in conjunction. The elastic flow-dispersing component 5 can adapt to the liquid flow, breaking up dead zones in the liquid flow. Combined with the stirring action of the adjustable mixing component 4, it can quickly mix formaldehyde and methanol, two liquids with significantly different densities, avoiding stratification and residue. Simultaneously, the stirring components support blade adjustment, allowing for flexible adjustment of the blade size based on the concentration, viscosity, and other characteristics of the formaldehyde-methanol mixture to quickly disperse stratified liquids, thereby improving the overall efficiency of the equipment.

[0042] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal, characterized in that, include: A distillation assembly has a processing component mounted on its side, a driving component mounted on its inner wall, and an adjustable mixing component mounted on its output end. The adjustable mixing component is used to mix the material inside the processing assembly, and an elastic turbulence shroud is slidably mounted on the inner wall of the adjustable mixing component. The elastic turbulence shroud is used to turbulence the material inside the assembly.

2. The catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal according to claim 1, characterized in that, The distillation assembly includes a distillation unit, the inner wall of which is equipped with a conveying structure for the input and output of materials inside the distillation unit. Each distillation unit is equipped with a tray, and a reflux condenser is installed at the top of the distillation unit.

3. The catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal according to claim 1, characterized in that, The processing component includes a hybrid architecture with a heating structure mounted on its side for heating materials inside the hybrid architecture, and a fixed cover plate mounted on the top of the hybrid architecture.

4. The catalytic distillation column for the production of methyl acetal from formaldehyde by reacting formaldehyde with methanol according to claim 1, characterized in that, The drive assembly includes a drive structure, a drive rod is installed at the output end of the drive structure, and a support structure is installed at the side end of the drive structure, the support structure being used for structural support of the drive structure.

5. The catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal according to claim 1, characterized in that, The adjustable mixing component includes an annular mounting plate, on the inner wall of which a rotating frame is installed. A first stirring element is rotatably connected to the inner wall of the rotating frame. A second stirring element slides on the inner wall of the first stirring element. The first stirring element, in conjunction with the second stirring element, can be used to stir the materials inside the component. An adjustment structure is installed on the inner wall of the first stirring element. A fixed slider is provided on the inner wall of the adjustment structure and the second stirring element. A connecting structure is rotatably connected to the inner wall of the fixed slider. The connecting structure is used for adjusting the position of the second stirring element.

6. The catalytic distillation column for the reaction of formaldehyde and methanol to produce methyl acetal according to claim 1, characterized in that, The elastic turbulence component includes a groove limiting structure and an elastic support member. A sliding support plate slides on the inner wall of the groove limiting structure, and a turbulence structure is installed on the inner wall of the sliding support plate. The turbulence structure is used to handle the turbulence of materials inside the component. The elastic support member is installed on the inner wall of the side end of the adjustable mixing component.

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