1,4-Butanediol production residual liquid recovery unit

Abstract

This utility model discloses a residual liquid recovery device for 1,4-butanediol production, comprising a hollow main shaft with a through-cavity inside. The hollow main shaft is vertically inserted into the bottom of the inner cavity of a reactor. A set of blades is fixedly installed on the upper part of the main shaft, located at the bottom of the inner cavity of the reactor. The top of the hollow main shaft is rotatably mounted in a support frame. A one-way valve and a cleaning ball are sequentially installed on the top of the hollow main shaft. The bottom end of the hollow main shaft is connected to the end of a water inlet pipe via a rotary joint. The residual liquid recovery device for 1,4-butanediol production provided by this utility model can solve the problem of residual liquid deposition and discharge difficulties, ensuring that the residual liquid can be smoothly and completely discharged from the drain pipe.

Description

Technical Field

[0001] This utility model relates to a residual liquid recovery device for 1,4-butanediol production, belonging to the field of 1,4-butanediol production technology. Background Technology

[0002] 1,4-Butanediol is an important organic and fine chemical raw material, widely used in pharmaceuticals, chemicals, textiles, papermaking, automobiles, and daily chemical products. The production process of 1,4-butanediol generates various complex residual liquids, such as the bottom liquid from the heavy fraction tower.

[0003] The residue from 1,4-butanediol production often has high viscosity or contains easily deposited solids. In existing technologies, relying solely on gravity or simple pumping for drainage results in the residue easily settling and remaining on the bottom and inner walls of the reactor, leading to incomplete drainage, low recovery rates, and even pipe blockage. If the residue is not completely removed, it can also contaminate the next batch of material.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] This invention addresses the shortcomings of the prior art by providing a residual liquid recovery device for 1,4-butanediol production, which can solve the problems of residual liquid deposition and discharge difficulties, ensuring that the residual liquid can be smoothly and completely discharged from the drain pipe.

[0006] To solve the above technical problems, the present invention adopts the following technical solution:

[0007] A residual liquid recovery device for 1,4-butanediol production includes a hollow main shaft with a through-cavity inside. The hollow main shaft is vertically inserted into the bottom of the inner cavity of a reactor. A set of blades is fixedly installed on the upper part of the main body of the hollow main shaft, with the blades located at the bottom of the inner cavity of the reactor. The top of the hollow main shaft is rotatably mounted in a support frame. A one-way valve and a cleaning ball are sequentially installed on the top of the hollow main shaft. The bottom end of the hollow main shaft is connected to the end of the water inlet pipe through a rotary joint.

[0008] Furthermore, the support frame is located above the paddle and is fixed to the inner wall of the reactor.

[0009] Furthermore, a wear-resistant bushing is installed at the connection between the hollow spindle and the support frame.

[0010] Furthermore, the bottom of the reactor has an installation port for the hollow main shaft to pass through, and a rotary seal is installed inside the installation port.

[0011] Furthermore, a ring-shaped sealing plate is installed at the bottom of the installation port.

[0012] Furthermore, a hollow geared motor for driving the rotation of the hollow spindle is installed below the sealing plate.

[0013] Furthermore, the hollow geared motor is fixed to the bottom of the sealing plate via a motor mounting plate.

[0014] Furthermore, the hollow main shaft extends longitudinally through the interior of the hollow geared motor.

[0015] Furthermore, a drain pipe connected to the bottom side of the inner cavity of the reactor is installed.

[0016] Furthermore, a drain valve is installed on the drain pipe.

[0017] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages:

[0018] This invention uses a stirring paddle at the bottom of the vessel to force stirring, thereby homogenizing the residual liquid, reducing viscosity and preventing sedimentation. This solves the problem of high-viscosity or easily sedimented materials being difficult to discharge from the bottom of the vessel, and greatly improves the material recovery rate.

[0019] The rotating cleaning ball achieves thorough cleaning of the bottom of the vessel, ensuring that any residual liquid is completely flushed off and discharged to prevent contamination of the next batch of materials and to meet cleaning requirements.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

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

[0022] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the top structure of the hollow main shaft.

[0024] In the diagram, 1-Reaction vessel, 2-Drain pipe, 3-Drain valve, 4-Installation port, 5-Sealing plate, 6-Motor mounting plate, 7-Hollow geared motor, 8-Hollow spindle, 9-Rotary seal, 10-Rotary joint, 11-Water inlet pipe, 12-Support frame, 13-Wear-resistant bushing, 14-Impeller, 15-Check valve, 16-Cleaning ball. Detailed Implementation

[0025] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0026] like Figures 1-3As shown in the figure, this utility model provides a residual liquid recovery device for 1,4-butanediol production, including a hollow main shaft 8. The hollow main shaft 8 has a through cavity. The hollow main shaft 8 is vertically inserted into the bottom of the inner cavity of the reactor 1. A set of blades 14 are fixedly installed on the upper part of the main body of the hollow main shaft 8. The blades 14 are located at the bottom of the inner cavity of the reactor 1 and rotate with the hollow main shaft 8. The top of the hollow main shaft 8 is rotatably installed in the support frame 12. A one-way valve 15 and a cleaning ball 16 are sequentially installed on the top of the hollow main shaft 8.

[0027] The one-way valve 15 only allows cleaning water to flow from the inner cavity of the hollow main shaft 8 to the cleaning ball 16, and prevents reverse flow.

[0028] The support frame 12 is located above the blade 14 and is fixed to the inner wall of the reactor 1. The support frame 12 provides rotational support to the top of the hollow main shaft 8 to ensure the stability of the rotation process.

[0029] A wear-resistant bushing 13 is installed at the connection between the hollow spindle 8 and the support frame 12.

[0030] The bottom of the reactor 1 has an installation port 4 for the hollow main shaft 8 to pass through. A rotary seal 9 is installed in the installation port 4, which serves as a leak-proof function.

[0031] A ring-shaped sealing plate 5 is installed at the bottom of the mounting port 4. A hollow geared motor 7 for driving the hollow spindle 8 to rotate is installed below the sealing plate 5. The hollow geared motor 7 is fixed to the bottom of the sealing plate 5 through the motor mounting plate 6.

[0032] The hollow main shaft 8 runs longitudinally through the interior of the hollow geared motor 7. The specific structure of the hollow geared motor 7 is existing technology, and it has a through central hole inside.

[0033] The bottom end of the hollow spindle 8 is connected to the end of the water inlet pipe 11 via a rotary joint 10. The rotary joint 10 is used to continuously and reliably transfer fluid between the rotating hollow spindle 8 and the stationary water inlet pipe 11.

[0034] A drain pipe 2 connected to the bottom of the inner cavity of the reactor 1 is installed, and a drain valve 3 is installed on the drain pipe 2.

[0035] The specific working principle of this utility model is as follows:

[0036] When it is necessary to discharge and recycle the residual liquid at the bottom of the reactor 1, the hollow geared motor 7 first drives the blade 14 to rotate through the hollow main shaft 8. During the rotation, the blade 14 fully stirs the residual liquid in the reactor to achieve homogenization. The homogenized residual liquid is discharged from the drain pipe 2 for recycling or disposal. By setting a stirrer at the bottom of the reactor, the problem of high viscosity or easily deposited materials being difficult to discharge from the bottom of the reactor 1 is solved.

[0037] The cleaning ball 16 rotates under the drive of the hollow main shaft 8. The cleaning ball 16 sprays high-pressure cleaning water at a specific angle, which can efficiently flush the residual liquid adhering to or deposited on the inner wall and bottom wall of the reactor 1 and the impeller 14 itself to prevent contamination of the next batch of materials.

[0038] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A bottoms recovery apparatus for 1,4-butanediol production, characterized by: Includes a hollow main shaft (8), which has a through cavity inside. The hollow main shaft (8) is vertically inserted into the bottom of the inner cavity of the reactor (1). A set of blades (14) is fixedly installed on the upper part of the main body of the hollow main shaft (8). The blades (14) are located at the bottom of the inner cavity of the reactor (1). The top of the hollow main shaft (8) is rotatably installed in the support frame (12). A one-way valve (15) and a cleaning ball (16) are installed sequentially on the top of the hollow main shaft (8). The bottom end of the hollow main shaft (8) is connected to the end of the water inlet pipe (11) through a rotary joint (10).

2. The apparatus for recovering a residual liquid for 1,4-butanediol production according to claim 1, characterized by: The support frame (12) is located above the blade (14) and is fixed to the inner wall of the reactor (1).

3. The residual liquid recovery device for 1,4-butanediol production as described in claim 1, characterized in that: A wear-resistant bushing (13) is installed at the connection between the hollow spindle (8) and the support frame (12).

4. The residual liquid recovery device for 1,4-butanediol production as described in claim 1, characterized in that: The bottom of the reactor (1) has an installation port (4) for the hollow main shaft (8) to pass through, and a rotary seal (9) is installed inside the installation port (4).

5. The residual liquid recovery device for 1,4-butanediol production as described in claim 4, characterized in that: The bottom of the installation port (4) is fitted with a ring-shaped sealing plate (5).

6. The residual liquid recovery device for 1,4-butanediol production as described in claim 5, characterized in that: A hollow geared motor (7) for driving the hollow spindle (8) to rotate is installed below the sealing plate (5).

7. The residual liquid recovery device for 1,4-butanediol production as described in claim 6, characterized in that: The hollow geared motor (7) is fixed to the bottom of the sealing plate (5) via the motor mounting plate (6).

8. The residual liquid recovery device for 1,4-butanediol production as described in claim 7, characterized in that: The hollow main shaft (8) runs longitudinally through the interior of the hollow geared motor (7).

9. The residual liquid recovery device for 1,4-butanediol production as described in claim 1, characterized in that: A drain pipe (2) is installed on one side of the bottom of the inner cavity of the reactor (1).

10. The residual liquid recovery device for 1,4-butanediol production as described in claim 9, characterized in that: A drain valve (3) is installed on the drain pipe (2).

Images