Alkyd paint diluent raw material rectifying device

Abstract

The utility model is suitable for alcohol acid paint diluent production technical field provides an alcohol acid paint diluent raw material rectifying device, including rectifying column, one side of rectifying column is equipped with feed inlet, the top of rectifying column is equipped with condenser pipe, the inside circulation flow condensate of condenser pipe, the top of rectifying column is connected with heat exchanger through circulation pipeline, the bottom of rectifying column is connected with reboiler through circulation pipeline, the inner bottom of rectifying column is equipped with stirring subassembly, the stirring subassembly includes motor, the motor sets up in the bottom surface of rectifying column, the output shaft of motor penetrates the bottom surface of rectifying column and is connected with the shaft, the lateral wall of the shaft is equipped with the stirring rod. The scheme is through the cooperation of condenser pipe and tower plate, increases the evaporation and condensation cycle number, and then improves the rectification purity, in addition, through stirring subassembly, the steam production rate is accelerated, the scheme simple structure, convenient operation, rectification effect is good, efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of alkyd paint thinner production technology, and in particular relates to an alkyd paint thinner raw material distillation device. Background Technology

[0002] Alkyd paint thinner is typically used to dilute alkyd resin paints. It can adjust the viscosity of the paint liquid, ensuring that the paint can be smoothly sprayed or brushed, while enhancing the leveling and adhesion of the paint film. Common alkyd paint thinners mainly contain solvents such as aromatic hydrocarbons, alcohols, and esters.

[0003] During the production of alkyd paint thinner, the raw solvent for the thinner may contain various impurities, such as moisture, low-boiling-point substances, and other chemical components. These impurities may affect the quality of the paint, leading to uneven drying, poor adhesion, or blistering of the paint film. To remove impurities from the solvent, distillation is required to effectively improve the purity of the thinner and enhance the quality and performance of the paint.

[0004] Existing alkyd paint thinner raw material distillation equipment mostly suffers from low distillation efficiency and poor results, and its complex structure and inconvenient operation and maintenance increase production costs and operational difficulty. In response, this application proposes an alkyd paint thinner raw material distillation device. Utility Model Content

[0005] The purpose of this invention is to provide a distillation apparatus for alkyd paint thinner raw materials to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a distillation apparatus for alkyd paint thinner raw materials, comprising a distillation column, a feed inlet on one side of the distillation column, an outlet on one side of the top of the distillation column, a condenser tube passing through the top of the distillation column, condensate circulating inside the condenser tube, a heat exchanger connected to the top of the distillation column via a circulation pipeline, a reboiler connected to the bottom of the distillation column via a circulation pipeline, and a stirring assembly provided at the bottom inner part of the distillation column.

[0007] Preferably, the stirring assembly includes a motor, which is disposed on the bottom surface of the distillation column. The output shaft of the motor passes through the bottom surface of the distillation column and is connected to a rotating shaft. The side wall of the rotating shaft is provided with a stirring rod.

[0008] Preferably, the interior of the distillation column is provided with a number of trays spaced apart above the stirring assembly. One end of each tray is fixedly connected to the inner wall of the distillation column, and there is a gap between the free end of the tray and the inner wall of the distillation column.

[0009] Preferably, the free ends of several of the trays are arranged at an angle downwards.

[0010] Preferably, the condenser tube is corrugated.

[0011] Preferably, the top of the distillation column is provided with a top cover, which is threadedly connected to the distillation column.

[0012] This utility model has at least the following beneficial effects:

[0013] This invention provides a distillation apparatus for alkyd paint thinner raw materials. By cooperating with condenser tubes and trays, the number of evaporation and condensation cycles is increased, thereby improving the distillation purity. In addition, the stirring component accelerates the steam generation rate. This solution has a simple structure, is easy to operate, and has good distillation effect and high efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at position A in the middle;

[0016] Figure 3 This is a schematic diagram of the overall external structure of this utility model.

[0017] In the attached diagram, the following are the reference numerals: 1. Distillation column; 2. Top cover; 3. Feed inlet; 4. Gas outlet; 5. Reboiler; 6. Heat exchanger; 7. Condenser; 8. Tray; 9. Motor; 10. Shaft; 11. Stirring rod. 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 of the present utility model. 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 skilled in the art without creative effort are within the scope of protection of the present utility model.

[0019] Example

[0020] Please see Figure 1 , Figure 2 and Figure 3This utility model provides a technical solution: a distillation device for alkyd paint thinner raw materials, including a distillation column 1, a feed inlet 3 on one side of the distillation column 1, and an outlet 4 on one side of the top of the distillation column 1. Specifically, the outlet 4 is connected to a condenser and a collector through a pipe. A condenser tube 7 is installed on the top of the distillation column 1. Specifically, the condenser tube 7 is fixedly connected to the distillation column 1. The condensate circulates inside the condenser tube 7. Specifically, the condenser tube 7 is connected to a condensate circulation pump. A heat exchanger 6 is connected to the top of the distillation column 1 through a circulation pipeline. A reboiler 5 is connected to the bottom of the distillation column 1 through a circulation pipeline. A stirring assembly is provided at the bottom of the inner part of the distillation column 1.

[0021] Furthermore, the stirring assembly includes a motor 9, which is disposed on the bottom surface of the distillation column 1. Specifically, the mounting base of the motor 9 is fixedly connected to the distillation column 1. The output shaft of the motor 9 passes through the bottom surface of the distillation column 1 and is connected to a rotating shaft 10. Specifically, the rotating shaft 10 is fixedly connected to the output shaft of the motor 9, and the output shaft of the motor 9 is rotatably connected to the bottom surface of the distillation column 1. The side wall of the rotating shaft 10 is provided with a stirring rod 11. Specifically, the stirring rod 11 is fixedly connected to the rotating shaft 10.

[0022] Furthermore, the interior of the distillation column 1 is provided with several trays 8 spaced apart above the stirring assembly. One end of the tray 8 is fixedly connected to the inner wall of the distillation column 1, and there is a gap between the free end of the tray 8 and the inner wall of the distillation column 1.

[0023] Furthermore, the free ends of several trays 8 are inclined downwards, which facilitates flow guidance.

[0024] Furthermore, the condenser tube 7 is corrugated, which helps to improve the condensation effect.

[0025] Furthermore, the top of the distillation column 1 is provided with a top cover 2, which is threadedly connected to the distillation column 1, making it easy to open the distillation column 1.

[0026] The working principle and usage process of this utility model are as follows: The raw material of alkyd paint thinner is added into the distillation column 1 through the feed port 3. The reboiler 5 is started to heat the liquid at the bottom of the distillation column 1 to boiling, generating a large amount of vapor, which evaporates. The vapor generated at the bottom of the column flows from bottom to top in the column and pumps circulating condensate into the condenser 7. The vapor at the top of the column is condensed into liquid by the condenser 7 and flows from top to bottom as reflux liquid. On each tray 8 in the column, the rising vapor and the falling reflux liquid have full and counter-current contact.

[0027] When rising vapor encounters a cooler reflux liquid, partial condensation occurs. The components with higher boiling points are more likely to condense into liquid and thus merge into the downstream liquid. Consequently, the concentration of components with lower boiling points in the rising vapor becomes increasingly higher.

[0028] When a downstream liquid encounters hot vapor, it undergoes partial vaporization. The components with lower boiling points are more likely to vaporize and thus be incorporated into the rising vapor. Consequently, the concentration of components with higher boiling points in the downstream liquid becomes increasingly higher.

[0029] Thus, after several vaporization and condensation cycles from bottom to top within the column, the vapor reaching the top of the column is almost entirely composed of volatile components. It is then introduced into the condenser through outlet 4 and stored in the collector as a high-purity distillate. Meanwhile, the liquid at the bottom of the column is almost entirely composed of non-volatile components and is collected as the bottom product.

[0030] During the process, the motor 9 drives the rotating shaft 10 to rotate, which in turn drives the stirring rod 11 to stir, thereby improving the steam generation efficiency.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] 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 distillation apparatus for alkyd paint thinner raw materials, characterized in that, The distillation column (1) includes a feed inlet (3) on one side and an outlet (4) on one side of the top of the distillation column (1). A condenser (7) is installed at the top of the distillation column (1), and condensate circulates inside the condenser (7). A heat exchanger (6) is connected to the top of the distillation column (1) through a circulation pipeline. A reboiler (5) is connected to the bottom of the distillation column (1) through a circulation pipeline. A stirring assembly is installed at the bottom of the distillation column (1).

2. The alkyd paint thinner raw material distillation apparatus according to claim 1, characterized in that: The stirring assembly includes a motor (9), which is located on the bottom surface of the distillation column (1). The output shaft of the motor (9) passes through the bottom surface of the distillation column (1) and is connected to a rotating shaft (10). The side wall of the rotating shaft (10) is provided with a stirring rod (11).

3. The alkyd paint thinner raw material distillation apparatus according to claim 2, characterized in that: The interior of the distillation column (1) is provided with several trays (8) spaced apart above the stirring assembly. One end of each tray (8) is fixedly connected to the inner wall of the distillation column (1), and there is a gap between the free end of the tray (8) and the inner wall of the distillation column (1).

4. The alkyd paint thinner raw material distillation apparatus according to claim 3, characterized in that: The free ends of several of the trays (8) are arranged at an angle downwards.

5. The alkyd paint thinner raw material distillation apparatus according to claim 4, characterized in that: The condenser tube (7) is corrugated.

6. The alkyd paint thinner raw material distillation apparatus according to claim 5, characterized in that: The distillation column (1) is provided with a top cover (2) at the top, and the top cover (2) is threadedly connected to the distillation column (1).

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