Organic intermediate rectification device

Abstract

The utility model relates to an organic intermediate rectifying device which comprises a rectifying tank, a discharging pipe is arranged at the upper end of the rectifying tank, a discharging opening is formed in the lower end of the rectifying tank, the side face of the rectifying tank is connected with a feeding pump through a feeding pipe, the feeding pump is connected with a raw material box through a raw material pipe, an electric heating pipe is arranged at the lower end of the rectifying tank, and the discharging pipe penetrates through a cooling box to be connected with a material storage box. According to the organic intermediate rectification device, the heating temperature is accurately controlled, solute and solvent can be better separated, and the product purity and quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production, in particular to an organic intermediate distillation device. Background Art

[0002] 2-Chloro-4-phenylquinazoline is an organic optoelectronic material intermediate compound. An optoelectronic material intermediate refers to an intermediate compound in the reaction conversion process during the preparation of optoelectronic materials. It usually has good photophysical and electrical properties and can play a key role in the preparation of optoelectronic devices. The performance of optoelectronic materials depends largely on the structure and properties of the intermediates. Therefore, the design and preparation of intermediates are crucial for the performance regulation of optoelectronic materials.

[0003] The existing organic intermediate 2-chloro-4-phenylquinazoline rectification device usually adopts a water bath heating method to heat the 2-chloro-4-phenylquinazoline solution. Since the evaporation temperature of 2-chloro-4-phenylquinazoline is close to the evaporation temperature of the solvent, and the temperature of the water bath is difficult to control, the purity of 2-chloro-4-phenylquinazoline after rectification is insufficient, which affects the product quality. Therefore, it is urgent to design a kind of organic intermediate 2-chloro-4-phenylquinazoline rectification device to solve the above problems. Utility Model Content

[0004] The utility model aims to design an organic intermediate distillation device so as to realize more accurate control of heating temperature, so as to better separate solute and solvent and improve product purity and quality.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An organic intermediate distillation device comprises a distillation tank, wherein the upper end of the distillation tank is provided with a discharge pipe, and the lower end is provided with a discharge port, the side of the distillation tank is connected to a feed pump through a feed pipe, and the feed pump is connected to a raw material box through a raw material pipe, and an electric heating pipe is provided at the lower end of the distillation tank, and the discharge pipe passes through a cooling box and is connected to a storage box.

[0007] Furthermore, in the above-mentioned organic intermediate distillation device, the lower end of the distillation tank is fixedly connected with a support leg.

[0008] Furthermore, in the above-mentioned organic intermediate distillation device, the discharge pipe is arranged in a serpentine shape in a vertical direction inside the cooling box.

[0009] Furthermore, in the above-mentioned organic intermediate distillation device, the cooling box is filled with water.

[0010] Furthermore, in the above-mentioned organic intermediate distillation device, the cooling box is connected to a derivation pipe, the derivation pipe passes through the raw material box and is connected to a reflux pump, and the reflux pump is connected to the cooling box through a reflux pipe.

[0011] Furthermore, in the above-mentioned organic intermediate distillation device, the outlet pipe is arranged in a serpentine shape in a horizontal direction inside the raw material box.

[0012] Furthermore, in the above-mentioned organic intermediate distillation device, a heat-insulating layer is provided outside the raw material box.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model provides an organic intermediate distillation device, which heats the raw materials containing products and solvents in the distillation tank through electric heating tubes. Compared with water bath heating, electric heating can control the fluctuation of heating temperature within a smaller range, so that the solute and the solvent can be better separated, thereby improving the purity and quality of the product. After heating, the product leaves the discharge pipe in a gaseous state, is cooled by water in the cooling box, and then flows into the storage box for storage. The organic intermediate distillation device realizes more precise control of the heating temperature, so that the solute and the solvent can be better separated, and the purity and quality of the product are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the utility model after the cooling box, raw material box, feed pump and storage box are hidden;

[0018] The names of the components marked in the figure are as follows:

[0019] 1. Distillation tank; 11. Support legs; 12. Discharge port; 13. Feed pipe; 14. Electric heating tube; 2. Discharge pipe; 3. Cooling box; 31. Export pipe; 32. Reflux pipe; 4. Raw material box; 41. Reflux pump; 42. Raw material pipe; 5. Storage box; 6. Feed pump. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] Example: Please refer to Figure 1-3 , an organic intermediate distillation device, including a distillation tank 1, a cooling box 3, a raw material box 4 and a storage box 5.

[0022] The upper end of the distillation tank 1 is provided with a discharge pipe 2, and the lower end is provided with a discharge port 12, and a valve is provided in the discharge port 12. The lower end of the distillation tank 1 is fixedly connected with a support leg 11 to support the distillation tank 1. The lower end of the distillation tank 1 is provided with an electric heating pipe 14 for heating the raw materials in the distillation tank 1.

[0023] The discharge pipe 2 passes through the cooling box 3 and is connected to the storage box 5. The product in the discharge pipe 2 is cooled into a liquid state in the cooling box 3 and flows into the storage box 5 for storage. The discharge pipe 2 is arranged in a vertically curved serpentine shape in the cooling box 3, so that it can be in more sufficient contact with the coolant in the cooling box 3 for a long time, and the gaseous product coming out of the discharge pipe 2 is fully cooled into a liquid state. The cooling box 3 is filled with water, which is a coolant with high specific heat capacity and is easily available. The cooling box 3 is connected with an outlet pipe 31, which passes through the raw material box 4 and is connected to the reflux pump 41. The outlet pipe 31 is bent and serpentine in the horizontal direction in the raw material box 4. The reflux pump 41 is connected to the cooling box 3 through the reflux pipe 32. When cooling the gaseous product, the temperature of the water itself increases. At this time, the water has a high heat. By passing the water through the raw material box 4, the heat of the water can be used to preheat the raw materials in the raw material box 4, reducing the electric heating time. At the same time, there is no waste of water heat, which is conducive to saving energy. The bent serpentine setting of the outlet pipe 31 can make the water contact with the raw material for a longer time and fully exchange heat. The outside of the raw material box 4 is provided with an insulation layer, and the insulation layer can adopt the existing technology to keep the raw materials in the raw material box 4 warm.

[0024] The raw material box 4 is connected to the feed pump 6 through the raw material pipe 42 , and the feed pump 6 is connected to the side of the distillation tank 1 through the feed pipe 13 .

[0025] Working principle of this embodiment: This embodiment provides an organic intermediate distillation device, which heats the raw materials containing products and solvents in the distillation tank 1 through an electric heating tube 14. Compared with water bath heating, electric heating allows the fluctuation of the heating temperature to be controlled within a smaller range, so that the solute and the solvent can be better separated, thereby improving the purity and quality of the product. After heating, the product leaves the discharge pipe 2 in a gaseous state, is cooled by water in the cooling box 3, and then flows into the storage box 5 for storage. The temperature of the water itself rises, and the water fully exchanges heat with the raw materials in the raw material box 4 to preheat the raw materials. The temperature of the water itself drops, and the raw materials are pumped into the distillation tank 1 through the feed pump 6. The water returns to the cooling box 3 through the reflux pump 41, which reduces the electric heating time of the raw materials, and at the same time does not waste the heat of the water, which is conducive to saving energy. This organic intermediate distillation device realizes more precise control of the heating temperature, so that the solute and the solvent can be better separated, and the purity and quality of the product are improved.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an element centered thereon. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an element centered thereon. The terms "upper", "lower", "left", "right", "front", "rear" and similar expressions used herein are for illustrative purposes only.

[0027] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An organic intermediate distillation device, comprising a distillation tank (1), wherein the upper end of the distillation tank (1) is provided with a discharge pipe (2) and the lower end is provided with a discharge port (12), characterized in that: The side of the distillation tank (1) is connected to a feed pump (6) via a feed pipe (13), and the feed pump (6) is connected to a raw material box (4) via a raw material pipe (42). An electric heating pipe (14) is provided at the lower end of the distillation tank (1), and the discharge pipe (2) passes through a cooling box (3) and is connected to a storage box (5).

2. The organic intermediate distillation device according to claim 1, characterized in that: A support foot (11) is fixedly connected to the lower end of the rectification tank (1).

3. The organic intermediate distillation device according to claim 1, characterized in that: The discharge pipe (2) is arranged in a serpentine shape in a vertical direction inside the cooling box (3).

4. The organic intermediate distillation device according to claim 1, characterized in that: The cooling box (3) is filled with water.

5. The organic intermediate distillation device according to claim 1, characterized in that: The cooling box (3) is connected to a dewatering pipe (31), the dewatering pipe (31) passes through the raw material box (4) and is connected to a reflux pump (41), and the reflux pump (41) is connected to the cooling box (3) via a reflux pipe (32).

6. The organic intermediate distillation device according to claim 5, characterized in that: The outlet pipe (31) is arranged in a serpentine shape in a horizontal direction inside the raw material box (4).

7. The organic intermediate distillation device according to claim 5, characterized in that: The outside of the raw material box (4) is provided with a heat-insulating layer.

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