Novel purification device for dichloropropene

Abstract

The utility model relates to the technical field of chemical engineering, and provides a novel dichloropropene purifying device which comprises a stepped tank, a feeding hole is formed in the top of the stepped tank, a flow dividing block is arranged on a rotating shaft, a spiral processing sheet is fixedly connected onto the flow dividing block, an output motor is arranged at the bottom of the stepped tank, and the output motor is fixedly screwed and connected with the stepped tank. The output end of the output motor is inserted into the stepped tank and fixedly connected with the rotating shaft. According to the technical scheme, the problem that in the prior art, temperature loss is fast in the dichloropropene purification process is solved, when solid caustic soda sodium hydroxide is put into crude dichloropropene, the solid caustic soda sodium hydroxide can rapidly settle to the bottom of the tank body, at the moment, the crude dichloropropene is stirred, and the temperature of the dichloropropene is reduced. However, coarse dichloropropene at the bottom of the tank body cannot flow quickly in a common stirring mode, so that solid caustic soda sodium hydroxide is difficult to dissolve in the coarse dichloropropene quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical industry, and in particular to a novel purification device for dichloropropylene. Background Art

[0002] Dichloropropane is a chemical substance with the chemical formula C3H6Cl2. Dichloropropane has four isomers, including 1,2-dichloropropane, 1,3-dichloropropane, 1,1-dichloropropane and 2,2-dichloropropane. All four are colorless liquids, insoluble in water, soluble in acetone, ether and most other organic solvents, and can be used as mildew inhibitors or fungicides; they are also oils and paraffins. They are mostly used in paint thinners, mainly in paints and inks, and are used to prepare paints, inks, thinners and PVC adhesives. It is an excellent organic solvent that can replace xylene and other benzene-related uses for the production of benzene-free banana water, thinner, polyurethane thinner, etc., and is soluble in organic solvents such as benzene, ketones, and esters. As a by-product of the chlorohydrin method for the production of PO, it is the main raw material for the production of thinners and is used as a paint thinner. Due to its low toxicity and environmental protection characteristics, it can replace toluene and xylene and is widely used in benzene-free thinner, benzene-free glue, benzene-free paint, etc.

[0003] In the process of propylene dichloride purification, the crude propylene dichloride needs to be put into the raw material storage tank first, and then solid caustic soda sodium hydroxide is added to mix to obtain propylene dichloride and a low-boiling mixture, and then a series of complex chemical operations are performed to completely purify the propylene dichloride. Regarding the mixing operation of crude propylene dichloride and solid caustic soda sodium hydroxide, when solid caustic soda sodium hydroxide is put into the crude propylene dichloride, the solid caustic soda sodium hydroxide will quickly settle to the bottom of the tank. At this time, the crude propylene dichloride is stirred, but the ordinary stirring method cannot make the crude propylene dichloride at the bottom of the tank flow quickly, so it is difficult to quickly dissolve the solid caustic soda sodium hydroxide in the crude propylene dichloride. For this reason, we designed a new purification device for propylene dichloride. Utility Model Content

[0004] The utility model provides a novel purification device for dichloropropylene, which solves the problem of rapid temperature loss in the dichloropropylene purification process in the prior art, and when solid caustic soda and sodium hydroxide are added into crude dichloropropylene, the solid caustic soda and sodium hydroxide will quickly settle to the bottom of a tank body, and at this time, the crude dichloropropylene is stirred, but the common stirring method cannot make the crude dichloropropylene at the bottom of the tank body flow quickly, so it is difficult to quickly dissolve the solid caustic soda and sodium hydroxide in the crude dichloropropylene.

[0005] The technical solution of the utility model is as follows:

[0006] A stepped tank, wherein a feed port is provided at the top of the stepped tank;

[0007] A filtering and purifying component, wherein the filtering and purifying component is arranged inside the stepped tank;

[0008] A connection and fixing assembly, wherein the connection and fixing assembly is arranged inside the stepped tank;

[0009] The filtering and purification component includes a rotating shaft, which is arranged inside the step tank. A diverter block is arranged on the rotating shaft, and a spiral processing sheet is fixedly connected to the diverter block. An output motor is arranged at the bottom of the step tank, and the output motor is fixedly screwed to the step tank. The output end of the output motor is inserted into the step tank, and the output end of the output motor is fixedly connected to the rotating shaft.

[0010] As a further technical solution, a temperature-insulating cavity is provided inside the step tank, and the temperature-insulating cavity is located on the inner wall of the step tank. A filter screen is provided inside the step tank, and the filter screen has a semicircular structure and is mounted on the rotating shaft.

[0011] As a further technical solution, the connection and fixing assembly includes a positioning plate, a positioning hole is opened inside the positioning plate, a key groove is arranged on the inner wall of the positioning hole, the positioning hole is mounted on the rotating shaft, and a connecting frame is arranged on the side wall of the positioning plate, and one end of the connecting frame is fixedly connected to the inner wall of the step tank.

[0012] As a further technical solution, the rotating shaft and the positioning plate are connected by a bearing sleeve, and the number of the connecting frames is several, and the multiple connecting frames are evenly distributed on the side wall of the positioning plate.

[0013] As a further technical solution, support legs are provided at the bottom of the stepped tank, and the support legs are hollow structures.

[0014] As a further technical solution, the side wall of the stepped tank is connected to a discharge port, and a solenoid valve is arranged inside the discharge port.

[0015] As a further technical solution, a feed cover is provided on the feed port, and the feed cover is an inverted conical structure.

[0016] As a further technical solution, the stepped tank is composed of two cylinders with different diameters spliced ​​together.

[0017] The working principle and beneficial effects of the utility model are:

[0018] The purification device of the utility model makes the liquid fluidity more sufficient by arranging bolt processing pieces on the stirring rod. When stirring, the upper layer of liquid in the tank body can collide and mix with the lower layer of liquid in the tank body, so that the crude dichloropropylene in the tank body flows violently, and the dissolution of the solid caustic soda and sodium hydroxide in the tank body is accelerated. In addition, the solid caustic soda and sodium hydroxide precipitated at the bottom of the tank body can be lifted up, so that the solid caustic soda and sodium hydroxide will not be precipitated at the bottom of the tank body, and can be fully mixed with the crude dichloropropylene that flows violently in the tank body, thereby solving the disadvantage of the prior art that the solid caustic soda and sodium hydroxide are difficult to quickly dissolve in the crude dichloropropylene, and the beneficial effect is obvious and suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a cross-sectional view of the utility model;

[0022] Figure 3 This is an axonometric view of the positioning disk of the utility model;

[0023] In the figure: 1. Step tank; 2. Feed inlet; 3. Filtration and purification component; 3-1. Rotating shaft; 3-2. Diverter block; 3-3. Bolt processing plate; 3-4. Output motor; 3-5. Insulation cavity; 3-6. Filter screen; 4. Connection and fixing component; 4-1. Positioning plate; 4-2. Positioning hole; 4-3. Keyway; 4-4. Connecting frame; 5. Support leg; 6. Discharge port; 7. Solenoid valve; 8. Feed cover. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1~Figure 3 As shown, this embodiment proposes a novel purification device for dichloropropylene, comprising

[0026] A step tank 1, wherein a feed inlet 2 is provided at the top of the step tank 1;

[0027] A filtering and purifying component 3, wherein the filtering and purifying component 3 is arranged inside the stepped tank 1;

[0028] A connection and fixing component 4, wherein the connection and fixing component 4 is arranged inside the stepped tank 1;

[0029] The filtering and purification component 3 includes a rotating shaft 3-1, which is arranged inside the step tank 1. A diverter block 3-2 is arranged on the rotating shaft 3-1, and a spiral processing sheet is fixedly connected to the diverter block 3-2. An output motor 3-4 is arranged at the bottom of the step tank 1. The output motor 3-4 is fixedly screwed to the step tank 1, and the output end of the output motor 3-4 is inserted into the step tank 1, and the output end of the output motor 3-4 is fixedly connected to the rotating shaft 3-1.

[0030] In this embodiment, the bolt processing piece 3-3 in the filtering and purification component 3 is rotated unidirectionally, and the principle of the bolt auger is utilized to continuously stir up the dichloropropylene in the step tank 1, so that the solid caustic soda and sodium hydroxide deposited in the step tank 1 is gasified, so that the solid caustic soda and sodium hydroxide will not be deposited at the bottom of the tank body.

[0031] Specifically, a thermal insulation cavity 3-5 is provided inside the step tank 1, and the thermal insulation cavity 3-5 is located on the inner wall of the step tank 1. A filter screen 3-6 is provided inside the step tank 1, and the filter screen 3-6 is a semicircular structure. The filter screen 3-6 is mounted on the rotating shaft 3-1.

[0032] In this embodiment, the temperature-insulating cavity 3-5 can slow down the temperature loss of dichloropropylene inside the stepped tank 1, and the filter screen 3-6 can filter and isolate the solid caustic soda and sodium hydroxide.

[0033] Furthermore, the connecting and fixing component 4 includes a positioning plate 4-1, a positioning hole 4-2 is opened inside the positioning plate 4-1, a key groove 4-3 is arranged on the inner wall of the positioning hole 4-2, the positioning hole 4-2 is mounted on the rotating shaft 3-1, and a connecting frame 4-4 is arranged on the side wall of the positioning plate 4-1, and one end of the connecting frame 4-4 is fixedly connected to the inner wall of the step tank 1.

[0034] In this embodiment, the positioning hole 4-2 on the positioning plate 4-1 is connected to the rotating shaft 3-1 by a bearing, and the keyway 4-3 is fixedly connected to the bearing, so that the bearing is placed more stably. When adding materials in the feed port 2, dichloropropylene can flow into the stepped tank 1 through the gap of the connecting frame 4-4.

[0035] Furthermore, the rotating shaft 3-1 and the positioning plate 4-1 are connected by a bearing sleeve, there are a number of connecting frames 4-4, and multiple connecting frames 4-4 are evenly distributed on the side wall of the positioning plate 4-1. A supporting leg 5 is provided at the bottom of the step tank 1, and the supporting leg 5 is a hollow structure.

[0036] In this embodiment, the hollow structure of the support leg 5 can slow down the temperature loss rate of the dichloropropylene inside the stepped tank 1, and the connecting frame 4-4 is used to fix the positioning plate 4-1.

[0037] Furthermore, the side wall of the stepped tank 1 is connected to a discharge port 6, a solenoid valve 7 is arranged inside the discharge port 6, a feed cover 8 is arranged on the feed port 2, the feed cover 8 is an inverted conical structure, and the stepped tank 1 is composed of two cylinders of different diameters.

[0038] In this embodiment, the solenoid valve 7 on the discharge port 6 controls the discharge, and the feed cover 8 is a wide-mouth structure, which makes the feed cover 8 more convenient when feeding.

[0039] When dichloropropylene needs to be purified, dichloropropylene is poured into the step tank 1 from the feed cover 8. Dichloropropylene enters the step tank 1 through the gap between the connecting frames 4-4. The output motor 3-4 drives the rotating shaft 3-1 to rotate, so that the bolt processing piece 3-3 rotates. The bolt processing piece 3-3 drives the dichloropropylene to be stirred upward, and drives the solid caustic soda and sodium hydroxide precipitated at the bottom of the tank body to be lifted up, so that the solid caustic soda and sodium hydroxide will not be precipitated at the bottom of the tank body, and fully mixed with the crude dichloropropylene flowing violently in the tank body. After purification, the solenoid valve 7 is opened, and the dichloropropylene is discharged from the discharge port 6 and filtered through the filter screen 3-6.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel purification device for dichloropropylene, characterized in that: include A stepped tank (1), wherein a feed inlet (2) is provided at the top of the stepped tank (1); A filtering and purification component (3), wherein the filtering and purification component (3) is arranged inside the stepped tank (1); A connection and fixing component (4), wherein the connection and fixing component (4) is arranged inside the stepped tank (1); The filtering and purification component (3) comprises a rotating shaft (3-1), the rotating shaft (3-1) is arranged inside the stepped tank (1), a diverter block (3-2) is arranged on the rotating shaft (3-1), a spiral processing sheet is fixedly connected to the diverter block (3-2), an output motor (3-4) is arranged at the bottom of the stepped tank (1), the output motor (3-4) is fixedly screwed to the stepped tank (1), the output end of the output motor (3-4) is inserted into the stepped tank (1), and the output end of the output motor (3-4) is fixedly connected to the rotating shaft (3-1).

2. A novel purification device for propylene dichloride according to claim 1, characterized in that: The stepped tank (1) is provided with a temperature-insulating cavity (3-5) inside, and the temperature-insulating cavity (3-5) is located on the inner wall of the stepped tank (1). The stepped tank (1) is provided with a filter screen (3-6) inside, and the filter screen (3-6) is a semicircular structure, and the filter screen (3-6) is mounted on the rotating shaft (3-1).

3. A novel purification device for dichloropropylene according to claim 1, characterized in that: The connection and fixing assembly (4) comprises a positioning plate (4-1), a positioning hole (4-2) is formed inside the positioning plate (4-1), a keyway (4-3) is arranged on the inner wall of the positioning hole (4-2), the positioning hole (4-2) is sleeved on the rotating shaft (3-1), a connecting frame (4-4) is arranged on the side wall of the positioning plate (4-1), and one end of the connecting frame (4-4) is fixedly connected to the inner wall of the stepped tank (1).

4. A novel purification device for dichloropropylene according to claim 3, characterized in that: The rotating shaft (3-1) and the positioning disk (4-1) are connected by a bearing sleeve, and the connecting frames (4-4) are of a certain number, and a plurality of the connecting frames (4-4) are evenly distributed on the side wall of the positioning disk (4-1).

5. A novel purification device for dichloropropylene according to claim 1, characterized in that: The bottom of the stepped tank (1) is provided with supporting legs (5), and the supporting legs (5) are hollow structures.

6. A novel purification device for propylene dichloride according to claim 1, characterized in that: The side wall of the stepped tank (1) is connected to a discharge port (6), and a solenoid valve (7) is arranged inside the discharge port (6).

7. A novel purification device for dichloropropylene according to claim 1, characterized in that: The feed port (2) is provided with a feed cover (8), and the feed cover (8) is an inverted conical structure.

8. A novel purification device for dichloropropylene according to claim 1, characterized in that: The stepped tank (1) is composed of two cylinders with different diameters spliced ​​together.

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