Reaction kettle acid adding device in ethyl linolenate production

Abstract

A reaction kettle acid adding device in ethyl linolenate production comprises a liquid inlet rigid pipe connected to the upper end of a reaction kettle, the liquid inlet rigid pipe is communicated with the interior of the reaction kettle, a flexible pipe is fixedly connected to the liquid inlet rigid pipe, the upper end of the flexible pipe is fixedly connected to a rigid liquid outlet pipe, the rigid liquid outlet pipe is fixedly connected to the bottom of a liquid adding hopper, and the liquid adding hopper is fixedly connected to the bottom of the liquid adding hopper. The flexible pipe penetrates through the screw water stop clamp, the screw water stop clamp is fixedly arranged, the screw water stop clamp comprises a screw hole plate, a screw is screwed in a screw hole of the screw hole plate, guide rods are fixedly connected to the positions, on the two sides of the screw, of the screw hole plate, the two ends of the movable clamping plate are arranged on the guide rods in a sliding and penetrating mode through holes, and the screw abuts against the movable clamping plate. The two ends of the fixed clamping plate are fixedly connected to the guide rods, and the flexible pipe passes through the space between the fixed clamping plate and the movable clamping plate. According to the acid adding device, the acid adding speed is controllable, and the consistency of the acid adding speeds of different batches is well guaranteed by adjusting the position of the solenoid.

Description

Technical Field

[0001] The utility model relates to a production device of ethyl linolenate, in particular to an acid adding device for a reaction kettle of ethyl linolenate, belonging to the technical field of chemical engineering. Background Art

[0002] Ethyl linolenate (α-ethyl linolenate) is a nutritional health product produced from perilla oil as a raw material and can also be used in medicine. The applicant has been continuously researching and developing α-ethyl linolenate in order to reduce costs. Although the traditional production process, such as the high-purity α-ethyl linolenate disclosed in the applicant's Chinese Patent Application No. 2014105026031, can obtain a relatively high product purity, its steps are relatively cumbersome, the process is complex, and more three wastes are generated during the production process. In recent years, the applicant has developed and studied a process equipment for preparing α-ethyl linolenate by one-pot cooking. Using this equipment, raw materials such as perilla oil and ethanol are heated and reacted in a reaction kettle. After the reaction is completed, sulfuric acid diluted with ethanol needs to be added. This requires opening the flange plate sealed at the feeding port. Because the materials in the kettle are basically in a boiling state during the reaction, the temperature in the kettle needs to be lowered before opening the feeding port. Open the feeding port, add sulfuric acid diluted with ethanol, and then seal the flange plate of the feeding port again to prevent the substances in the kettle from escaping. Then raise the temperature in the kettle to the process temperature. This method is found to have the following problems in actual operation: First, the feeding is cumbersome and requires removing multiple bolts on the flange plate; second, because there is a process of changing from the process temperature, cooling, and then rising to the process temperature, energy consumption is required; third, this method cannot control the acid addition speed, and the controllability of the process is poor. Summary of the Invention

[0003] The purpose of the utility model is to provide an acid adding structure for a reaction kettle of ethyl linolenate to solve the above problems existing in the acid addition during the production of ethyl linolenate.

[0004] To achieve the purpose of the utility model, the following technical solution is adopted: An acid adding device for a reaction kettle in the production of ethyl linolenate includes a rigid liquid inlet pipe connected to the upper end of the reaction kettle. The rigid liquid inlet pipe is communicated with the inside of the reaction kettle. A flexible pipe is fixedly connected to the rigid liquid inlet pipe. The upper end of the flexible pipe is fixedly connected to the bottom of a rigid liquid outlet pipe. The rigid liquid outlet pipe is fixedly connected to the bottom of a liquid adding hopper. The flexible pipe passes through a screw water stop clamp. The screw water stop clamp is fixedly arranged. The screw water stop clamp includes a screw hole plate. A screw is screwed into the screw hole of the screw hole plate. Guide rods are fixedly connected to the screw hole plate on both sides of the screw. Both ends of a movable clamping plate are slidably inserted through the guide rods through holes. The screw abuts against the movable clamping plate. Both ends of a fixed clamping plate are fixedly connected to the guide rods. The flexible pipe passes between the fixed clamping plate and the movable clamping plate.

[0005] Further, a section of thread is provided near the end of the guide rod close to the screw hole plate, and an adjusting screw tube is screwed onto the thread. The adjusting screw is rotated to define the moving position of the movable clamping plate.

[0006] Further, the bottom of the liquid adding hopper is conical.

[0007] Further, the movable clamping plate is convex-shaped, and a spring is inserted through the guide rod between the fixed clamping plate and the movable clamping plate.

[0008] Further, the length of the flexible tube below the screw water stop clamp is greater than the distance between the liquid inlet rigid tube and the liquid outlet tube. After the flexible tube is folded into a right angle, the two right-angle sides of the flexible tube and the connection line between the liquid inlet rigid tube and the liquid outlet tube can form a right triangle.

[0009] The positive and beneficial technical effects of the present utility model are as follows: When adding acid with this acid adding device, there is no need to open the feeding port anymore. The reaction kettle does not need to be cooled first and then heated, and the acid adding speed is controllable. The consistency of the acid adding speed in different batches is well ensured by adjusting the position of the adjusting screw tube. The screw water stop clamp is used as a valve in the atmosphere and does not come into contact with any reaction medium, and has good corrosion resistance. Description of the Drawings

[0010] Figure 1 is the overall schematic diagram of the present utility model.

[0011] Figure 2 is the schematic diagram of the screw water stop clamp. Detailed Description of the Preferred Embodiment

[0012] To more fully explain the implementation of the present utility model, implementation examples of the present utility model are provided. These implementation examples are only for the elaboration of the present utility model and do not limit the scope of the present utility model.

[0013] Figure 1 It is just a simple schematic diagram for illustrating the present utility model. Figure 1 In it, a liquid inlet rigid tube is connected to a reserved sight glass port on the reaction kettle. The reaction kettle is equipped with a stirring motor 2, and the feeding port, temperature sleeve installation port, etc. that have nothing to do with the present utility model are not shown on the reaction kettle.

[0014] The present utility model is further explained in detail in conjunction with the drawings. The marks in the drawings are as follows: 1: reaction kettle; 2: stirring motor 2; 3: sight glass port; 4: liquid inlet rigid tube; 5: flexible tube; 6: liquid outlet tube; 7: screw water stop clamp; 8: liquid adding hopper; 701: screw hole plate; 702: screw; 703: fixed clamping plate; 704: movable clamping plate; 705: guide rod; 706: adjusting screw tube; 707: spring.

[0015] As shown in the attached drawings, an acid adding device for a reaction kettle in the production of ethyl linolenate includes a rigid liquid inlet pipe 4 connected to the upper end of the reaction kettle. The rigid liquid inlet pipe 4 communicates with the inside of the reaction kettle. A flexible pipe 5 is fixedly connected to the rigid liquid inlet pipe. The upper end of the flexible pipe is fixedly connected to a rigid liquid outlet pipe 6. The rigid liquid outlet pipe is fixedly connected to the bottom of a liquid adding hopper 8. The bottom of the liquid adding hopper is conical. The length of the flexible pipe below the screw water stop clamp is greater than the distance between the rigid liquid inlet pipe and the liquid outlet pipe. After the flexible pipe is folded into a right angle, the two right-angled sides of the flexible pipe and the connecting line between the rigid liquid inlet pipe and the liquid outlet pipe can form a right triangle. This state is as Figure 1 shown. The purpose of this design is that steam will enter the flexible pipe and condense during the reaction. Taking a high-temperature resistant silica gel pipe as an example, a longer flexible pipe can make the condensate fall into the silica gel pipe to form a liquid seal to prevent steam from escaping. When adding acid, the liquid in these liquid seals can flow manually into the reaction kettle without affecting the acid addition.

[0016] The flexible pipe passes through a screw water stop clamp 7. The screw water stop clamp is fixedly arranged. A bracket can be fixedly arranged around the reaction kettle, and the screw water stop clamp is fixedly connected to the bracket. The screw water stop clamp includes a screw hole plate 701. A screw 702 is screwed into the screw hole of the screw hole plate. Guide rods 705 are fixedly connected to the screw hole plate on both sides of the screw. There is a section of thread near the screw hole plate end on the guide rod, and an adjusting screw tube 706 is screwed onto the thread. Rotating the adjusting screw rod can limit the moving position of the movable clamping plate. In this way, a consistent flow rate can be achieved in multiple batches of liquid addition, and the flow rate can be controlled to a certain extent to meet the process control of the reaction. Both ends of the movable clamping plate 704 slide through the holes on the guide rod. The movable clamping plate 704 is convex-shaped. A spring 707 is arranged on the guide rod between the fixed clamping plate and the movable clamping plate. The spring stores energy and abuts between the fixed clamping plate and the movable clamping plate. In this way, after the screw is loosened, it can reliably ensure the movement of the movable clamping plate to realize the smooth flow of the acid liquid. The screw 702 abuts against the movable clamping plate. Both ends of the fixed clamping plate 703 are fixedly connected to the guide rod. The flexible pipe 5 passes between the fixed clamping plate and the movable clamping plate.

[0017] When using this device to add acid, only need to pour the liquid to be added into the liquid adding hopper and loosen the screw on the screw water stop clamp. After the adjusting screw tube abuts against the movable clamping plate and reaches the set position, the liquid can flow.

[0018] After elaborating on the embodiments of the present invention in detail, those familiar with the technology can clearly understand that various changes and modifications can be made without departing from the above-mentioned scope and spirit of the patent application. Any simple modifications, equivalent changes and decorations made to the above embodiments based on the technical essence of the present invention all belong to the scope of the technical solution of the present invention, and the present invention is not limited to the implementation manners of the examples given in the specification either.

Claims

1. A reactor acid addition device in the production of ethyl linolenate, comprising a rigid liquid inlet pipe connected to the upper end of the reactor, and the rigid liquid inlet pipe is communicated with the inside of the reactor, characterized in that: A flexible tube is fixedly connected to the liquid inlet rigid tube, the upper end of the flexible tube is fixedly connected to the rigid liquid outlet tube, the rigid liquid outlet tube is fixedly connected to the bottom of the liquid adding hopper, the flexible tube passes through a screw water stop clamp, and the screw water stop clamp is fixedly arranged. The screw water stop clamp includes a screw hole plate, a screw is screwed in the screw hole of the screw hole plate, guide rods are fixedly connected to the screw hole plate on both sides of the screw, both ends of the movable clamping plate are slidably inserted through the guide rods through holes, the screw abuts against the movable clamping plate, both ends of the fixed clamping plate are fixedly connected to the guide rods, and the flexible tube passes between the fixed clamping plate and the movable clamping plate.

2. The acid addition device for the reactor in the production of ethyl linolenate according to claim 1, wherein: A section of thread is provided at the end of the guide rod close to the screw hole plate, and an adjusting screw tube is screwed on the thread to limit the moving position of the movable clamping plate by rotating the adjusting screw.

3. The acid adding device for the reactor in the production of ethyl linolenate according to claim 1, characterized in that: The bottom of the liquid adding hopper is conical.

4. A reactor acid addition device in the production of ethyl linolenate according to claim 1, characterized in that: The movable clamping plate is convex-shaped, and a spring is inserted through the guide rod between the fixed clamping plate and the movable clamping plate.

5. The acid addition device for the reactor in the production of ethyl linolenate according to claim 1, wherein: The length of the flexible tube below the screw water stop clamp is greater than the distance between the liquid inlet rigid tube and the liquid outlet tube. After the flexible tube is folded into a right angle, the two right-angled sides of the flexible tube and the connection line between the liquid inlet rigid tube and the liquid outlet tube can form a right-angled triangle.

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