Intermittent methanol rectification device

Abstract

The utility model discloses an intermittent methanol rectification device which comprises a rectification tower, a steam guide pipe is fixedly mounted on the rectification tower, a temporary storage bin is fixedly mounted at one end, far away from the rectification tower, of the steam guide pipe, a steam guide pipe is fixedly mounted on the temporary storage bin, and a condensing device is mounted on the steam guide pipe. A preheating box is fixedly installed at the end, away from the temporary storage bin, of the steam guide pipe, an air outlet pipe is fixedly installed on the preheating box, a preheating cylinder is fixedly installed in the preheating box, a spiral heat conduction pipe is fixedly bonded to the outer wall of the preheating cylinder, and the two ends of the heat conduction pipe are fixedly connected with the steam guide pipe and the air outlet pipe correspondingly. And a liquid inlet pipe is fixedly mounted on the top wall of the preheating cylinder. According to the utility model, heat is conducted to the surface of the preheating cylinder by utilizing water vapor discharged in the distillation process when the water vapor passes through the heat conduction pipe so as to preheat methanol liquid in the preheating cylinder, so that the time required by temperature rise during distillation of the methanol liquid is shortened, and the working efficiency during methanol rectification is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of methanol distillation technology, specifically to an intermittent methanol distillation device. Background Technology

[0002] Distillation is a separation process that separates components in a mixture by utilizing their different volatility. In the chemical production of methanol, distillation equipment is required to purify methanol.

[0003] In the prior art, the authorized patent with publication number CN222400281U discloses an intermittent methanol distillation device, belonging to the field of mechanical technology. This invention includes: a main distillation vessel body, a condenser, and a secondary distillation vessel; the main distillation vessel body works in conjunction with a stirring mechanism to distill methanol from the feed liquid. The methanol vapor reaches the condenser, where it is cooled and liquefied, and finally distilled again in the secondary distillation vessel to achieve methanol distillation and purification. This invention separates impurities with boiling points higher than methanol from the feed liquid through a first constant-temperature distillation; it separates impurities with lower boiling points from the methanol vapor through condensation; and finally, a second distillation is performed, greatly improving the purity of the methanol product.

[0004] However, the above technical solution still has the following shortcomings when used: the methanol in the above device needs to be slowly heated to the required boiling point during the distillation process, resulting in low overall distillation efficiency. In this regard, we propose an intermittent methanol distillation device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an intermittent methanol distillation apparatus to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an intermittent methanol distillation apparatus, comprising:

[0007] A distillation column is provided, on which a steam conduit is fixedly installed. A temporary storage chamber is fixedly installed at the end of the steam conduit away from the distillation column. A steam guide pipe is fixedly installed on the temporary storage chamber. A condenser is installed on the steam guide pipe. A preheating box is fixedly installed at the end of the steam guide pipe away from the temporary storage chamber. An outlet pipe is fixedly installed on the preheating box. A preheating cylinder is fixedly installed inside the preheating box. A spiral heat-conducting pipe is fixedly bonded to the outer wall of the preheating cylinder. The two ends of the heat-conducting pipe are fixedly connected to the steam guide pipe and the outlet pipe, respectively. A liquid inlet pipe is fixedly installed on the top wall of the preheating cylinder. A liquid outlet pipe is fixedly installed on the bottom wall of the preheating cylinder.

[0008] Preferably, a storage box is fixedly installed at the bottom end of the liquid outlet pipe, a solenoid valve is installed on the liquid outlet pipe, a liquid guide pipe is fixedly installed on the bottom wall of the storage box, the bottom end of the liquid guide pipe is fixedly installed on the distillation column, and a valve is fixedly installed on the liquid guide pipe.

[0009] Preferably, a temperature sensor is fixedly installed inside the preheating cylinder, and a controller is fixedly installed on the outer wall of the preheating box. The temperature sensor and the controller are electrically connected by wires, and the controller is electrically connected to the solenoid valve by wires.

[0010] Preferably, both the preheating box and the storage box are made of thermal insulation material.

[0011] Preferably, both the preheating cylinder and the heat-conducting pipe are made of copper.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes the water vapor discharged during distillation to conduct heat to the surface of the preheating cylinder as it passes through a heat-conducting pipe, thereby preheating the methanol liquid in the preheating cylinder. Once the methanol liquid in the preheating cylinder reaches the specified temperature, the solenoid valve opens, allowing the methanol liquid to be introduced into a storage tank for storage. When methanol liquid needs to be added to the distillation column, the valve can be opened to allow the preheated methanol liquid in the storage tank to be introduced into the distillation column for distillation, reducing the time required for heating during methanol distillation and thus greatly improving the working efficiency of methanol distillation. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an intermittent methanol distillation device proposed in this utility model;

[0015] Figure 2 This is a front view of the overall structure of an intermittent methanol distillation device proposed in this utility model;

[0016] Figure 3 This is a cross-sectional front view of the preheating box in an intermittent methanol distillation device proposed in this utility model.

[0017] In the diagram: 1. Distillation column; 2. Steam conduit; 3. Temporary storage bin; 4. Steam pipe; 5. Condensation equipment; 6. Preheating box; 7. Gas outlet pipe; 8. Preheating cylinder; 9. Heat transfer pipe; 10. Liquid inlet pipe; 11. Liquid outlet pipe; 12. Storage box; 13. Solenoid valve; 14. Controller; 15. Liquid conduit pipe; 16. Valve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-3 This utility model provides a technical solution: an intermittent methanol distillation device, comprising:

[0020] A distillation column 1 is provided, on which a steam conduit 2 is fixedly installed. A temporary storage chamber 3 is fixedly installed at the end of the steam conduit 2 away from the distillation column 1. A steam guide pipe 4 is fixedly installed on the temporary storage chamber 3. A condenser 5 is installed on the steam guide pipe 4. A preheating box 6 is fixedly installed at the end of the steam guide pipe 4 away from the temporary storage chamber 3. An outlet pipe 7 is fixedly installed on the preheating box 6. A preheating cylinder 8 is fixedly installed inside the preheating box 6. A spiral heat-conducting pipe 9 is fixedly bonded to the outer wall of the preheating cylinder 8. The two ends of the heat-conducting pipe 9 are fixedly connected to the steam guide pipe 4 and the outlet pipe 7, respectively. A liquid inlet pipe 10 is fixedly installed on the top wall of the preheating cylinder 8. A liquid outlet pipe 11 is fixedly installed on the bottom wall of the preheating cylinder 8.

[0021] A storage tank 12 is fixedly installed at the bottom end of the liquid outlet pipe 11. A solenoid valve 13 is installed on the liquid outlet pipe 11. A liquid guide pipe 15 is fixedly installed on the bottom wall of the storage tank 12. The bottom end of the liquid guide pipe 15 is fixedly installed on the distillation column 1. A valve 16 is fixedly installed on the liquid guide pipe 15. The liquid outlet pipe 11 can guide the preheated methanol liquid in the preheating cylinder 8 into the storage tank 12 for storage. When methanol liquid needs to be added to the distillation column 1, it can be introduced through the liquid guide pipe 15.

[0022] A temperature sensor is fixedly installed inside the preheating cylinder 8, and a controller 14 is fixedly installed on the outer wall of the preheating box 6. The temperature sensor and the controller 14 are electrically connected by wires, and the controller 14 is electrically connected to the solenoid valve 13 by wires. The temperature sensor can monitor the temperature of the methanol liquid in the preheating cylinder 8. When the temperature of the methanol liquid in the preheating cylinder 8 reaches the standard, the temperature sensor transmits the temperature signal to the controller 14, and the controller 14 opens the solenoid valve 13, so that the methanol liquid with the standard temperature is introduced into the storage box 12 for storage.

[0023] Both the preheating box 6 and the storage box 12 are made of heat-insulating material, which can reduce heat loss.

[0024] Both the preheating cylinder 8 and the heat-conducting pipe 9 are made of copper, which has excellent thermal conductivity and facilitates heat transfer.

[0025] Working principle: In use, the methanol liquid to be processed is added to the preheating cylinder 8 through the inlet pipe 10. During the distillation process in the distillation column 1, the water vapor with residual heat generated during distillation enters the heat conduction pipe 9 through the steam guide pipe 4. As the water vapor passes through the heat conduction pipe 9, the heat is conducted to the surface of the preheating cylinder 8 to preheat the methanol liquid in the preheating cylinder 8. When the temperature of the methanol liquid in the preheating cylinder 8 reaches the standard, the solenoid valve 13 is opened, allowing the methanol liquid with the standard temperature to be introduced into the storage tank 12 for storage. When methanol liquid needs to be added to the distillation column 1, the valve 16 can be opened, allowing the preheated methanol liquid in the storage tank 12 to be introduced into the distillation column 1 for distillation, reducing the time required for heating during methanol distillation, thereby greatly improving the working efficiency of methanol distillation.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A batch methanol distillation apparatus, characterized in that, include: A distillation column (1) is fixedly installed with a steam conduit (2). A temporary storage chamber (3) is fixedly installed at the end of the steam conduit (2) away from the distillation column (1). A steam pipe (4) is fixedly installed on the temporary storage chamber (3). A condenser (5) is installed on the steam pipe (4). A preheating box (6) is fixedly installed at the end of the steam pipe (4) away from the temporary storage chamber (3). An outlet pipe (7) is fixedly installed on the preheating box (6). A preheating cylinder (8) is fixedly installed inside the preheating box (6). A spiral heat-conducting pipe (9) is fixedly bonded to the outer wall of the preheating cylinder (8). The two ends of the heat-conducting pipe (9) are fixedly connected to the steam pipe (4) and the outlet pipe (7) respectively. A liquid inlet pipe (10) is fixedly installed on the top wall of the preheating cylinder (8). A liquid outlet pipe (11) is fixedly installed on the bottom wall of the preheating cylinder (8).

2. The intermittent methanol distillation apparatus according to claim 1, characterized in that: A storage box (12) is fixedly installed at the bottom end of the liquid outlet pipe (11). A solenoid valve (13) is installed on the liquid outlet pipe (11). A liquid guide pipe (15) is fixedly installed on the bottom wall of the storage box (12). The bottom end of the liquid guide pipe (15) is fixedly installed on the distillation column (1). A valve (16) is fixedly installed on the liquid guide pipe (15).

3. The intermittent methanol distillation apparatus according to claim 2, characterized in that: A temperature sensor is fixedly installed inside the preheating cylinder (8), and a controller (14) is fixedly installed on the outer wall of the preheating box (6). The temperature sensor and the controller (14) are electrically connected by wires, and the controller (14) is electrically connected to the solenoid valve (13) by wires.

4. The batch methanol distillation apparatus according to claim 2, characterized in that: Both the preheating box (6) and the storage box (12) are made of thermal insulation material.

5. The batch methanol distillation apparatus according to claim 1, characterized in that: Both the preheating cylinder (8) and the heat-conducting pipe (9) are made of copper.

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