Reaction rectifying tower

Abstract

The utility model provides a reaction rectifying tower, including tower body, catalyst bed layer and packing, the bottom of tower body is provided with light phase material inlet, the top of tower body is provided with heavy phase material inlet, the catalyst bed layer is provided with a plurality of, all install in the tower body, the packing is installed in the tower body close to the one end of top; a heavy-phase material enters the tower body from the heavy-phase material inlet of the tower body and flows downwards, a light-phase material enters the tower body from the light-phase material inlet of the tower body and flows upwards, and the heavy-phase material and the light-phase material are subjected to heat and mass exchange in the catalyst bed layer, so that the esterification reaction is more thorough, and the filler arranged at the top of the tower body plays a role in rectification, so that the esterification efficiency is improved. And the tower body is divided into the rectifying tower and the plurality of reaction towers, so that the total height of the tower body can be greatly reduced, and the retention time of substances in the tower is reduced, thereby reducing the time required by the separation process and improving the rectifying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of reactive distillation columns, and in particular to a reactive distillation column. Background Technology

[0002] A reactive distillation column is a device that couples a chemical reaction with a distillation separation process within the same column. It utilizes the heat generated by the reaction for distillation, while the distillation process itself promotes the reaction, achieving mutual promotion and continuous operation of the reaction and separation. In traditional reactive distillation columns, esterification reactions are incomplete, and the top discharge material is impure. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] To address the aforementioned problems in the prior art, this utility model provides a reactive distillation column.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0007] A reactive distillation column includes a column body, a catalyst bed, and packing material;

[0008] The bottom of the tower body is provided with a light phase material inlet, and the top of the tower body is provided with a heavy phase material inlet;

[0009] Multiple catalyst beds are provided, all of which are installed inside the tower;

[0010] The packing material is installed inside the tower body near the top end.

[0011] Preferably, the column body includes a reaction column and a distillation column. Multiple reaction columns are provided, and the tops of the multiple reaction columns are connected to the distillation column through connecting pipes. Each reaction column is equipped with a catalyst bed, and the packing is installed in the distillation column.

[0012] Preferably, it also includes a light phase conveying main pipe and light phase conveying branch pipes, with multiple light phase conveying branch pipes connected to the light phase conveying main pipe. The light phase conveying branch pipes correspond to the reaction tower and are connected to the bottom of the corresponding reaction tower.

[0013] Preferably, both the connecting pipe and the light phase conveying branch pipe are equipped with control valves.

[0014] Preferably, among the plurality of reaction towers, one of the reaction towers is positioned as the center, and the remaining reaction towers are arranged around the central reaction tower.

[0015] Preferably, it also includes a steam heating mechanism, which includes an annular inner steam heating pipe and an annular outer steam heating pipe. The annular inner steam heating pipe is arranged around the central reaction tower, and the annular outer steam heating pipe surrounds the rest of the reaction tower. The annular inner steam heating pipe and the annular outer steam heating pipe are connected by pipelines, and hot steam circulates inside both of them.

[0016] (III) Beneficial Effects

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. The heavy phase material enters the tower body from the heavy phase material inlet and flows downward, while the light phase material enters the tower body from the light phase material inlet and flows upward. The heavy phase material and the light phase material exchange heat and mass in the catalyst bed, making the esterification reaction more thorough. The packing material at the top of the tower body also plays a role in distillation, making the material discharged from the top of the tower body purer.

[0019] 2. The column body is divided into a distillation column and multiple reaction columns, which can greatly reduce the overall height of the column body, reduce the residence time of substances in the column, thereby reducing the time required for the separation process and improving distillation efficiency;

[0020] 3. The appropriate number of reaction towers can be selected according to actual reaction requirements, making it more flexible and convenient to use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the steam heating mechanism.

[0024] [Explanation of Labels in the Attached Image]

[0025] 1. Tower body; 11. Reaction tower; 12. Distillation tower;

[0026] 2. Import of light phase materials;

[0027] 3. Heavy phase material inlet;

[0028] 4. Catalyst bed;

[0029] 5. Packing material;

[0030] 6. Connecting pipe;

[0031] 7. Light phase conveying main;

[0032] 8. Light phase conveying branch pipe;

[0033] 9. Control valve;

[0034] 10. Steam heating mechanism;

[0035] 101. Annular steam heating inner tube; 102. Annular steam heating outer tube. Detailed Implementation

[0036] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] Please refer to Figure 1 The first embodiment of this utility model:

[0038] A reactive distillation column includes a column body 1, a catalyst bed 4, and packing material 5;

[0039] The bottom of the tower body 1 is provided with a light phase material inlet 2, and the top of the tower body 1 is provided with a heavy phase material inlet 3;

[0040] Multiple catalyst beds 4 are provided, all of which are installed inside the tower body 1;

[0041] The packing 5 is installed inside the tower body 1 near the top end;

[0042] During use, the heavy phase material enters the interior of the tower 1 through the heavy phase material inlet 3 and flows downward, while the light phase material enters the interior of the tower 1 through the light phase material inlet 2 and flows upward. The heavy and light phase materials exchange heat and mass in the catalyst bed 4, making the esterification reaction more thorough. In addition, the packing 5 set at the top of the tower 1 plays a role in distillation, making the material discharged from the top of the tower 1 purer.

[0043] refer to Figure 2 and Figure 3 The second embodiment of this utility model:

[0044] The column body 1 includes a reaction column 11 and a distillation column 12. Multiple reaction columns 11 are provided, and the tops of multiple reaction columns 11 are connected to the distillation column 12 through connecting pipes 6. Each reaction column 11 is equipped with a catalyst bed 4, and packing 5 is installed in the distillation column 12.

[0045] Dividing column 1 into distillation column 12 and multiple reaction columns 11 can greatly reduce the overall height of column 1, reduce the residence time of substances in the column, thereby reducing the time required for the separation process and improving distillation efficiency.

[0046] In this embodiment, a light phase conveying main pipe 7 and light phase conveying branch pipes 8 are also included. Multiple light phase conveying branch pipes 8 are connected to the light phase conveying main pipe 7. The light phase conveying branch pipes 8 correspond to the reaction tower 11 and are connected to the bottom of the corresponding reaction tower 11. The light phase material enters each light phase conveying branch pipe 8 from the light phase conveying main pipe 7 and thus enters each reaction tower 11.

[0047] In this embodiment, control valves 9 are provided on both the connecting pipe 6 and the light phase conveying branch pipe 8. The control valves 9 can shut down one or more reaction towers 11 individually, thereby selecting the appropriate number of reaction towers 11 according to the actual reaction requirements.

[0048] In this embodiment, among the multiple reaction towers 11, one reaction tower 11 is taken as the center, and the other reaction towers 11 are arranged around the central reaction tower 11.

[0049] In this embodiment, a steam heating mechanism 10 is also included. The steam heating mechanism 10 includes an annular steam heating inner pipe 101 and an annular steam heating outer pipe 102. The annular steam heating inner pipe 101 is arranged around the central reaction tower 11, and the annular steam heating outer pipe 102 surrounds the rest of the reaction tower 11. The annular steam heating inner pipe 101 and the annular steam heating outer pipe 102 are connected by pipelines, and hot steam circulates inside both of them.

[0050] All reaction towers 11 can be heated simultaneously through the annular steam heating inner pipe 101 and the annular steam heating outer pipe 102.

[0051] The working principle of this utility model is as follows:

[0052] The heavy phase material enters the interior of the tower 1 through the heavy phase material inlet 3 and flows downward, while the light phase material enters the interior of the tower 1 through the light phase material inlet 2 and flows upward. The heavy and light phase materials exchange heat and mass in the catalyst bed 4, making the esterification reaction more thorough. The packing 5 set at the top of the tower 1 plays a role in distillation, making the material discharged from the top of the tower 1 purer.

[0053] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A reactive distillation column, characterized in that, This includes the tower body, catalyst bed, and packing material; The bottom of the tower body is provided with a light phase material inlet, and the top of the tower body is provided with a heavy phase material inlet; Multiple catalyst beds are provided, all of which are installed inside the tower; The packing material is installed inside the tower body near the top end.

2. A reactive distillation column according to claim 1, characterized in that, The column body includes a reaction column and a distillation column. Multiple reaction columns are provided, and the tops of the multiple reaction columns are connected to the distillation column through connecting pipes. The catalyst bed is installed in each reaction column, and the packing is installed in the distillation column.

3. A reactive distillation column according to claim 2, characterized in that, It also includes a light phase conveying main pipe and light phase conveying branch pipes. Multiple light phase conveying branch pipes are connected to the light phase conveying main pipe. The light phase conveying branch pipes correspond to the reaction tower and are connected to the bottom of the corresponding reaction tower.

4. A reactive distillation column according to claim 3, characterized in that, Both the connecting pipe and the light phase conveying branch pipe are equipped with control valves.

5. A reactive distillation column according to claim 2, characterized in that, Of the plurality of reaction towers, one of the reaction towers is positioned as the center, and the other reaction towers are arranged around the center reaction tower.

6. A reactive distillation column according to claim 5, characterized in that, It also includes a steam heating mechanism, which includes an annular inner steam heating pipe and an annular outer steam heating pipe. The annular inner steam heating pipe is arranged around the central reaction tower, and the annular outer steam heating pipe surrounds the rest of the reaction tower. The annular inner steam heating pipe and the annular outer steam heating pipe are connected by pipelines, and hot steam circulates inside both of them.

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