Rectifying tower batch rectifying tower dosing device
By adopting a refined cavity and diversion tube structure design in the distillation column, the problems of uneven drug distribution and temperature changes were solved, and the uniform distribution and stable operation of the drug solution in the distillation column were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 山东中福环保设备有限公司
- Filing Date
- 2025-06-09
- Publication Date
- 2026-05-19
AI Technical Summary
In existing distillation columns, the contact between raw materials and gaseous or liquid phases can easily lead to temperature changes and uneven distribution of the reagents, affecting the stable operation of the distillation column.
The structure employs a refined cavity and a diversion tube. Through the combined design of the feed hood, diversion cone, and diversion tube, the liquid is evenly distributed and flows slowly down the inner wall of the distillation column, extending the contact time and avoiding large-area contact. Preheating is achieved by combining the tube heater.
This achieves uniform distribution of the drug solution within the distillation column, avoids temperature changes caused by large-area contact, and improves the operational stability and efficiency of the distillation column.
Smart Images
Figure CN224252125U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of distillation column feeding technology, and more specifically, to a batch distillation column dosing device. Background Technology
[0002] During the operation of a distillation column, raw materials are continuously added to the column for continuous distillation. However, in the existing technology, the temperature of the raw materials added to the distillation column will drop rapidly when they come into contact with the gaseous or liquid phase substances, causing the gaseous substances to re-liquefy or reducing the vaporization rate of the liquid phase substances.
[0003] Patent authorization number CN217939192U discloses a batch distillation column dosing device, including a distillation column; one end of the distillation column is provided with a storage tank, and one end of the storage tank is connected to the distillation column through a liquid delivery pipeline. A pump, a flow meter, a first solenoid valve, and a dosing device are sequentially installed along the side of the liquid delivery pipeline near the storage tank. The raw material entering the distillation column is introduced into the annular cavity through a branch pipe. The lower side of the annular cavity is provided with multiple refining chambers. The refining chambers distribute the thickness of the raw material after it enters the distillation column and make the raw material flow slowly down the inner wall of the distillation column. This can avoid large-area contact between the raw material and the gas or liquid phase and prolong the contact time between the raw material and the liquid phase. This allows the raw material to be preheated on the inner wall of the distillation column, so that it will not have an excessive impact on the temperature of the liquid phase when it comes into contact with it. Through multiple sets of branch pipes and annular cavities, the impact on the original product in the distillation column can be reduced, making the operation of the distillation column more stable.
[0004] However, in patent authorization number CN217939192U, the raw material enters the interior of the distillation column through the dosing device after passing through the first solenoid valve. In the dosing device, the raw material entering the distillation column is fed into the annular cavity through the branch pipe. The lower side of the annular cavity is provided with multiple refining cavities. Since multiple annular cavities are set in the axial position of the distillation column, it is easy for the remaining pharmaceuticals to overlap with each other. Furthermore, the vertically distributed structure is prone to uneven distribution of the liquid under pressure, affecting the contact area between the raw material and the gas or liquid phase. There is still room for improvement. Therefore, we propose a batch dosing device for a distillation column to solve the above-mentioned problems. Utility Model Content
[0005] 1. Technical problems to be solved
[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a batch distillation column dosing device. This device distributes the thickness of the raw material after it enters the distillation column body through a finer cavity, and then allows the raw material to flow slowly down the inner wall of the distillation column body through a distribution pipe. During this process, it avoids large-area contact between the raw material and the gas or liquid phase, and also prolongs the contact time between the raw material and the liquid phase. This allows the raw material to be preheated on the inner wall of the distillation column body, preventing excessive impact on the temperature of the liquid phase upon contact. The drug solution is evenly distributed and does not cover the liquid during its flow.
[0007] 2. Technical Solution
[0008] To solve the above problems, the present invention adopts the following technical solution.
[0009] A batch distillation column dosing device includes a distillation column body, a storage tank is provided on one side of the distillation column body, a delivery pipeline is connected between the storage tank and the distillation column body, and a delivery pump, a flow meter, a solenoid valve and a dosing device are sequentially installed on the delivery pipeline from the storage tank to one side of the distillation column body.
[0010] The dosing device includes a feeding hood located at the top of the inner cavity of the distillation column body, a refining cavity disposed at the root edge of the inner cavity of the feeding hood, a through hole opened at the root of the refining cavity, a flow divider cone fixedly connected to the middle of the inner cavity of the feeding hood, a flow divider pipe with one end connected to the through hole and the other end abutting against the inner wall of the distillation column body, a cover installed at the top of the feeding hood, and a feed pipe installed on the cover and connected to the conveying pipeline.
[0011] Furthermore, multiple through holes are provided in the radial direction of the feeding hood, and all of the multiple through holes are arranged in a flat structure.
[0012] Furthermore, the diversion tube is configured in a flat shape, and the end of the diversion tube near the inner wall of the distillation column is configured in an arc shape.
[0013] Furthermore, the centerline of the bottom end of the feed pipe corresponds to the centerline of the diverter cone.
[0014] Furthermore, a cross-shaped support frame is installed at the bottom of the feeding hood, and the end of the support frame is fixedly connected to the inner wall of the distillation column body.
[0015] Furthermore, the inside of the storage tank is filled with a medicinal liquid.
[0016] Furthermore, a tube heater is installed at the bottom of the inner cavity of the storage tank.
[0017] 3. Beneficial effects
[0018] Compared with existing technologies, the advantages of this utility model are:
[0019] (1) In this scheme, the liquid medicine is transported to the inside of the feeding hood through the feed pipe on the cover, and the falling liquid medicine is evenly divided by the diversion cone. The thickness of the raw material after entering the distillation column body is distributed by the refining cavity. Then, the raw material is slowly flowed down the inner wall of the distillation column body through the diversion pipe. In this process, it can avoid large-area contact between the raw material and the gas or liquid phase, and can also prolong the contact time between the raw material and the liquid phase. The raw material is preheated on the inner wall of the distillation column body. When it comes into contact with the liquid phase, it will not have too much impact on its temperature. The liquid medicine is evenly distributed and will not be covered during the flow.
[0020] (2) In this scheme, the axis of the bottom end of the feed pipe corresponds to the axis of the diversion cone, so that the diversion cone can evenly divert the falling liquid medicine, which can make the liquid medicine flow evenly to the through hole and ensure the uniformity of the liquid medicine during the outflow process. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a side view of the distillation column body of this utility model;
[0023] Figure 3 This is a cross-sectional schematic diagram of part AA of the distillation column body of this utility model;
[0024] Figure 4 This is an enlarged schematic diagram of part A of the present invention;
[0025] Figure 5 This is a schematic diagram of the external structure of the dosing device of this utility model.
[0026] Explanation of the labels in the diagram:
[0027] 1. Distillation column body; 2. Storage tank; 3. Transfer pump; 4. Flow meter; 5. Solenoid valve; 6. Feed hood; 7. Refining chamber; 8. Through hole; 9. Diverter cone; 10. Diverter pipe; 11. Cover; 12. Feed pipe; 13. Support frame. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0029] Example:
[0030] Please see Figure 1-5 A batch distillation column dosing device includes a distillation column body 1, a storage tank 2 is provided on one side of the distillation column body 1, a conveying pipeline is connected between the storage tank 2 and the distillation column body 1, and a conveying pump 3, a flow meter 4, a solenoid valve 5 and a dosing device are installed sequentially from the storage tank 2 to one side of the distillation column body 1.
[0031] The dosing device includes a feeding hood 6 located at the top of the inner cavity of the distillation column body 1, a refining cavity 7 located at the root edge of the inner cavity of the feeding hood 6, a through hole 8 opened at the root of the refining cavity 7, a flow divider cone 9 fixedly connected to the middle of the inner cavity of the feeding hood 6, a flow divider pipe 10 with one end connected to the through hole 8 and the other end abutting against the inner wall of the distillation column body 1, a cover 11 installed at the top of the feeding hood 6, and a feed pipe 12 installed on the cover 11 and connected to the conveying pipeline.
[0032] It should be noted that, in use, the chemical dosing device for this intermittent distillation column stores the chemical solution inside the storage tank 2. The delivery pump 3 draws the chemical solution from the inside of the storage tank 2 and delivers it through the delivery pipeline. The flow meter 4 measures the flow rate, and the solenoid valve 5 controls whether the delivery is closed or open. The chemical solution is delivered to the inside of the feeding hood 6 through the feed pipe 12 on the cover 11. The falling chemical solution is evenly distributed by the flow divider cone 9, and the thickness of the raw material after entering the distillation column body 1 is distributed by the refining chamber 7. Then, the raw material slowly flows down the inner wall of the distillation column body 1 through the flow divider pipe 10. In this process, it can avoid large-area contact between the raw material and the gas or liquid phase, and can also prolong the contact time between the raw material and the liquid phase. This allows the raw material to be preheated on the inner wall of the distillation column body 1, so that it will not have an excessive impact on the temperature of the liquid phase when in contact. The chemical solution is evenly distributed and will not cover the liquid during the flow.
[0033] like Figure 4 , Figure 5 As shown, multiple through holes 8 are arranged in the radial direction of the feed hood 6, and all of the multiple through holes 8 are arranged in a flat structure. The diversion pipe 10 is arranged in a flat structure, and the end of the diversion pipe 10 near the inner wall of the distillation column body 1 is arranged in an arc shape.
[0034] It should be noted that the thickness of the raw material after entering the distillation column body 1 is distributed through the finer cavity 7, and then the raw material is slowly flowed down the inner wall of the distillation column body 1 through the diversion pipe 10, so as to maximize the distribution of the liquid on the inner wall of the distillation column body 1. In this process, it can avoid large-area contact between the raw material and the gas or liquid phase, and also prolong the contact time between the raw material and the liquid phase.
[0035] like Figure 3As shown, the centerline of the bottom end of the feed pipe 12 corresponds to the centerline of the diversion cone 9;
[0036] It should be noted that by using the diversion cone 9 to evenly distribute the falling liquid medicine, the liquid medicine can flow evenly to the through hole 8, ensuring the uniformity of the liquid medicine during the outflow process.
[0037] like Figure 3 , Figure 5 As shown, a support frame 13 with a cross-shaped structure is installed at the bottom of the feeding hood 6, and the end of the support frame 13 is fixedly connected to the inner wall of the distillation column body 1.
[0038] It should be noted that the feeding hood 6 provides stable support.
[0039] The inside of storage tank 2 is filled with liquid medicine, and a tube heater is installed at the bottom of the inner cavity of storage tank 2;
[0040] It should be noted that, in order to help preheat the raw materials, an excessive temperature difference will not be generated when they enter the main body of the distillation column 1.
[0041] In use: the liquid medicine is stored inside the storage tank 2. The delivery pump 3 draws the liquid medicine from the inside of the storage tank 2 and delivers it through the delivery pipeline. The flow meter 4 measures the flow rate. The solenoid valve 5 controls whether the delivery is closed or closed. The liquid medicine is delivered to the inside of the feeding hood 6 through the feed pipe 12 on the cover 11. The falling liquid medicine is evenly distributed by the diversion cone 9. The thickness of the raw material after entering the distillation column body 1 is distributed by the refining chamber 7. Then, the raw material flows slowly down the inner wall of the distillation column body 1 through the diversion pipe 10. In this process, it can avoid large-area contact between the raw material and the gas or liquid phase and prolong the contact time between the raw material and the liquid phase, so that the raw material is preheated on the inner wall of the distillation column body 1.
[0042] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A batch distillation column dosing device, comprising a distillation column body (1), characterized in that: A storage tank (2) is provided on one side of the distillation column body (1). A conveying pipeline is connected between the storage tank (2) and the distillation column body (1). A conveying pump (3), a flow meter (4), a solenoid valve (5) and a dosing device are installed sequentially from the storage tank (2) to one side of the distillation column body (1). The dosing device includes a feeding hood (6) located at the top of the inner cavity of the distillation column body (1), a refining cavity (7) located at the root edge of the inner cavity of the feeding hood (6), a through hole (8) opened at the root of the refining cavity (7), a flow divider cone (9) fixedly connected to the middle of the inner cavity of the feeding hood (6), a flow divider pipe (10) with one end connected to the through hole (8) and the other end abutting against the inner wall of the distillation column body (1), a cover (11) installed at the top of the feeding hood (6), and a feed pipe (12) installed on the cover (11) and connected to the conveying pipeline.
2. The batch distillation column dosing device according to claim 1, characterized in that: Multiple through holes (8) are provided in the radial direction of the feeding cover (6), and all of the multiple through holes (8) are arranged in a flat structure.
3. The batch distillation column dosing device according to claim 1, characterized in that: The diversion pipe (10) is arranged in a flat structure, and the end of the diversion pipe (10) near the inner wall of the distillation column body (1) is arranged in an arc shape.
4. The batch distillation column dosing device according to claim 1, characterized in that: The centerline of the bottom end of the feed pipe (12) corresponds to the centerline of the diversion cone (9).
5. The batch distillation column dosing device according to claim 1, characterized in that: The bottom of the feeding hood (6) is equipped with a support frame (13) arranged in a cross shape, and the end of the support frame (13) is fixedly connected to the inner wall of the distillation column body (1).
6. The batch distillation column dosing device according to claim 1, characterized in that: The inside of the storage tank (2) is filled with medicine.
7. The batch distillation column dosing device according to claim 1, characterized in that: A tube heater is installed at the bottom of the inner cavity of the storage tank (2).