Crystallization device for purifying high-purity ethylene

Abstract

The utility model relates to the technical field of crystallization devices, in particular to a crystallization device for purifying high-purity ethylene, which comprises a reaction kettle, a heating box is arranged on one side of the reaction kettle, a water pump is mounted on the heating box, a water inlet end of the water pump is connected with the heating box, a mounting cavity is formed in the reaction kettle, and a condenser pipe is mounted in the mounting cavity. A first motor is installed on the upper surface of the reaction kettle, a stirring rod used for cleaning the inner wall of the reaction kettle is installed at the output end of the first motor, a spraying assembly is installed on the reaction kettle and connected with the output end of the water pump, the spraying assembly comprises installation sleeves, the installation sleeves are located on the two sides of the first motor, and moving rods are slidably installed in the installation sleeves; raw materials can be uniformly added into the reaction kettle through the spraying assembly and the water pump, so that the raw materials are conveniently cooled, the cooling speed is increased, the crystallization rate is increased, the position of an annular spraying pipe is flexibly adjusted, and the inner wall of the reaction kettle is conveniently cleaned by a stirring rod.

Description

Technical Field

[0001] The utility model relates to a crystallization device for purifying high-purity ethylene, belonging to the technical field of crystallization devices. Background Art

[0002] Ethylene is a basic chemical raw material for synthetic fibers, synthetic rubbers, and synthetic plastics. It is also used to manufacture vinyl chloride, styrene, ethylene oxide, acetic acid, acetaldehyde, and explosives. It can also be used as a ripening agent for fruits and vegetables. It is a proven plant hormone. Purification refers to separating impurities from a mixture to improve its purity. Generally, in order to extract ethylene, a carbon tetrachloride solution is used to separate ethylene from impurities, and a crystallization method is used to separate ethylene from carbon tetrachloride to obtain ethylene with higher purity. This requires a crystallization device. However, the existing crystallization device cannot uniformly add the heated ethylene mixture into the reactor, and the cooling rate is slow, which affects the crystallization rate. In view of this, the present utility model is proposed. Utility Model Content

[0003] The purpose of the utility model is to provide a crystallization device for purifying high-purity ethylene in order to solve the above-mentioned problem, which has the purpose of being able to quickly cool the heated ethylene mixture and improve the crystallization rate.

[0004] The utility model achieves the above-mentioned purpose through the following technical scheme: a crystallization device for purifying high-purity ethylene, comprising a reactor, a heating box is placed on one side of the reactor, a water pump is installed on the heating box, the water inlet end of the water pump is connected to the heating box, an installation cavity is opened on the reactor, a condenser is installed inside the installation cavity, a first motor is installed on the upper surface of the reactor, a stirring rod for cleaning the inner wall of the reactor is installed at the output end of the first motor, the stirring rod is rotatably installed inside the reactor, and the stirring rod is driven to rotate by the rotation of the first motor, a spray assembly is installed on the reactor, and the spray assembly is connected to the output end of the water pump.

[0005] Furthermore, in order to facilitate the adjustment of the position of the annular spray pipe, the spray assembly includes a mounting sleeve, the mounting sleeve is located on both sides of the first motor, a moving rod is slidably installed inside the mounting sleeve, the moving rod is plugged into the reactor, an annular spray pipe is installed between the moving rods, the annular spray pipe is located inside the reactor, and the position of the annular spray pipe is adjusted by adjusting the length of the moving rod inserted into the mounting sleeve.

[0006] Furthermore, in order to facilitate the transfer of the raw materials heated inside the heating box to the inside of the annular spray pipe, a retractable liquid inlet pipe is installed on the annular spray pipe, and the liquid inlet pipe is fixedly connected to the output end of the water pump. The annular spray pipe is provided with feeding holes arranged in an array.

[0007] Furthermore, in order to facilitate the movement and limiting of the moving rod, a limiting groove is provided on the inner wall of the mounting sleeve, and both sides of the moving rod are slidably engaged in the limiting groove.

[0008] Furthermore, in order to facilitate the adjustment of the length of the moving rod inserted in the mounting sleeve, a threaded rod is rotatably installed inside the mounting sleeve, a second motor is installed at the upper end of the mounting sleeve, and the output end of the second motor is fixedly connected to the threaded rod. The interior of the moving rod is a hollow structure, and the threaded rod is threadedly connected to the moving rod. The second motor rotates to drive the threaded rod to rotate, thereby adjusting the length of the moving rod inserted in the mounting sleeve.

[0009] Furthermore, in order to facilitate adding raw materials into the reactor, an air outlet pipe is provided on the upper surface of the reactor and on one side of the first motor, and a feed port is provided on the surface of the heating box.

[0010] Furthermore, in order to facilitate the discharge of the crystallized ethylene from the reactor, a discharge port is provided on the lower surface of the reactor, a solenoid valve is provided on the discharge port, and the stirring rod is tangent to the inner wall of the reactor.

[0011] Furthermore, in order to facilitate the discharge of the remaining liquid after crystallization, a liquid outlet with a filter screen at one end is provided on one side of the lower end of the reactor, and supporting feet arranged in an array are provided on the lower surface of the reactor.

[0012] The technical effects and advantages of the utility model are as follows: through the spraying assembly and the water pump, the position of the annular spraying pipe can be flexibly adjusted, so that the stirring rod can clean the inner wall of the reactor, and at the same time, raw materials can be added evenly into the reactor, which is convenient for cooling the raw materials and increasing the cooling speed, thereby increasing the crystallization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the utility model from the left side perspective;

[0015] Figure 3 It is a schematic diagram of the structure of the utility model from a top view;

[0016] Figure 4 It is a structural schematic diagram of the utility model from the right side perspective;

[0017] Figure 5 It is a cross-sectional schematic diagram of the spray assembly of the utility model;

[0018] Figure 6 for Figure 5 Schematic diagram of point A.

[0019] In the figure: 1. Reactor; 2. Heating box; 3. Water pump; 4. Condenser; 5. First motor; 6. Stirring rod; 7. Spraying assembly; 701. Mounting sleeve; 702. Moving rod; 703. Annular spraying pipe; 704. Liquid inlet pipe; 705. Feeding hole; 706. Limiting groove; 707. Threaded rod; 708. Second motor; 8. Feed inlet; 9. Air outlet pipe; 10. Discharge port; 11. Solenoid valve; 12. Liquid outlet. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in 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 in 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.

[0021] See also Figure 1-Figure 6 As shown, a crystallization device for purifying high-purity ethylene comprises a reactor 1, a heating box 2 is placed on one side of the reactor 1, the heating box 2 is used to heat the raw material so that the ethylene can reach a saturated state, so that the ethylene can be crystallized and separated from the solvent by cooling, and then the ethylene is purified, a water pump 3 is installed on the heating box 2, and the water inlet end of the water pump 3 is connected to the heating box 2, an installation cavity is opened on the reactor 1, a condenser 4 is installed inside the installation cavity, and the heated material inside the reactor 1 is cooled by the condenser 4, a first motor 5 is installed on the upper surface of the reactor 1, and a stirring rod 6 for cleaning the inner wall of the reactor 1 is installed at the output end of the first motor 5, the stirring rod 6 is rotatably installed inside the reactor 1, and the first motor 5 rotates to drive the stirring rod 6 to rotate, so that the soluble impurities on the surface of the crystal are fully merged with water, and then the impurities on the surface of the crystal are removed, and at the same time, the inside of the reactor 1 can be cleaned to avoid scaling on the surface of the reactor 1 and affect cooling crystallization, a spray assembly 7 is installed on the reactor 1, and the spray assembly 7 is connected to the output end of the water pump 3.

[0022] The spray assembly 7 includes a mounting sleeve 701, which is located on both sides of the first motor 5. A moving rod 702 is slidably installed inside the mounting sleeve 701, and the moving rod 702 is plugged into the reactor 1. An annular spray pipe 703 is installed between the moving rods 702. The annular spray pipe 703 is located inside the reactor 1. The position of the annular spray pipe 703 is adjusted by adjusting the length of the moving rod 702 plugged into the mounting sleeve 701. A retractable liquid inlet pipe 704 is installed on the annular spray pipe 703. The liquid inlet pipe 704 is fixedly connected to the output end of the water pump 3. The annular spray pipe 703 is provided with feeding holes 705 arranged in an array, which facilitates the heated material to be transferred to the liquid inlet pipe 704 and the annular spray pipe 703 through the water pump 3, so as to facilitate the material to be sprayed into the reactor 1, thereby facilitating the improvement of the cooling rate of the material and the crystallization rate. A limiting groove 706 is provided on the inner wall of the mounting sleeve 701. The two sides of the rod 702 are slidably engaged in the limiting groove 706, and the limiting groove 706 is used to limit the movement of the moving rod 702, so as to facilitate the adjustment of the length of the moving rod 702 inserted in the installation sleeve 701. A threaded rod 707 is rotatably installed inside the installation sleeve 701, and a second motor 708 is installed on the upper end of the installation sleeve 701. The output end of the second motor 708 is fixedly connected to the threaded rod 707. The interior of the moving rod 702 is a hollow structure, and the threaded rod 707 is threadedly connected to the moving rod 702. The second motor 708 rotates to drive the threaded rod 707 to rotate, so as to adjust the length of the moving rod 702 inserted in the installation sleeve 701, so as to facilitate the adjustment of the position of the annular spray pipe 703 according to the amount of raw materials inside the reactor 1, so as to facilitate the dissipation of hot molecules in the material and exchange with the cold molecules inside the reactor 1, thereby improving the cooling rate of the material and thus improving the crystallization rate.

[0023] An air outlet pipe 9 is provided on the upper surface of the reactor 1 and on one side of the first motor 5. The air outlet pipe 9 is used to discharge the heat inside the reactor 1. A feed port 8 is provided on the surface of the heating box 2. A discharge port 10 is provided on the lower surface of the reactor 1. A solenoid valve 11 is provided on the discharge port 10. The discharge port 10 can be opened by the solenoid valve 11 to discharge the crystallized ethylene out of the reactor 1. The stirring rod 6 is tangent to the inner wall of the reactor 1, so that the stirring rod 6 can clean the inner wall of the reactor 1 when rotating. A liquid outlet 12 with a filter screen at one end is provided on one side of the lower end of the reactor 1 to discharge the solvent and impurities inside the reactor 1. The lower surface of the reactor 1 is provided with supporting feet arranged in an array.

[0024] When the utility model is in use, raw materials are added into the heating box 2 through the feed port 8, the raw materials are heated by the heating box 2, the condenser 4 is started, the temperature inside the reactor 1 is lowered, the second motor 708 is started, the threaded rod 707 is driven to rotate, so as to adjust the length of the moving rod 702 inserted into the installation sleeve 701, the annular spraying pipe 703 is adjusted to a suitable position, the water pump 3 is started, the heated material is transferred to the liquid inlet pipe 704 and the annular spraying pipe 703, so as to spray the material into the reactor 1, so that the hot molecules in the material are emitted and exchanged with the cold molecules inside the reactor 1, so as to increase the cooling speed of the material, thereby increasing the crystallization speed, and adding water into the reactor 1 through the air inlet port, the first motor 5 is started, the stirring rod 6 is rotated, the soluble impurities on the surface of the crystal are fully merged with the water, and then the impurities on the surface of the crystal are removed, and at the same time, the inside of the reactor 1 can be cleaned to avoid scaling on the surface of the reactor 1 and affect cooling crystallization, and the solvent, impurities and water can be discharged from the reactor 1 through the liquid outlet 12.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0026] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A crystallization device for purifying high-purity ethylene, comprising a reactor (1), a heating box (2) is placed on one side of the reactor (1), a water pump (3) is installed on the heating box (2), the water inlet end of the water pump (3) is connected to the heating box (2), an installation cavity is opened on the reactor (1), a condenser (4) is installed inside the installation cavity, and the characteristics are: A first motor (5) is installed on the upper surface of the reactor (1); a stirring rod (6) for cleaning the inner wall of the reactor (1) is installed at the output end of the first motor (5); the stirring rod (6) is rotatably installed inside the reactor (1); a spraying assembly (7) is installed on the reactor (1); and the spraying assembly (7) is connected to the output end of the water pump (3).

2. The crystallization device for purifying high-purity ethylene according to claim 1, characterized in that: The spray assembly (7) comprises a mounting sleeve (701), wherein the mounting sleeve (701) is located on both sides of the first motor (5), a moving rod (702) is slidably mounted inside the mounting sleeve (701), the moving rod (702) is plugged into the reactor (1), an annular spray pipe (703) is mounted between the moving rods (702), and the annular spray pipe (703) is located inside the reactor (1).

3. The crystallization device for purifying high-purity ethylene according to claim 2, characterized in that: A retractable liquid inlet pipe (704) is installed on the annular spray pipe (703), and the liquid inlet pipe (704) is fixedly connected to the output end of the water pump (3). The annular spray pipe (703) is provided with material adding holes (705) arranged in an array.

4. The crystallization device for purifying high-purity ethylene according to claim 3, characterized in that: The inner wall of the installation sleeve (701) is provided with a limiting groove (706), and the two sides of the moving rod (702) are slidably engaged in the limiting groove (706).

5. The crystallization device for purifying high-purity ethylene according to claim 4, characterized in that: A threaded rod (707) is rotatably installed inside the installation sleeve (701), a second motor (708) is installed on the upper end of the installation sleeve (701), an output end of the second motor (708) is fixedly connected to the threaded rod (707), the interior of the moving rod (702) is a hollow structure, and the threaded rod (707) is threadedly connected to the moving rod (702).

6. The crystallization device for purifying high-purity ethylene according to claim 1, characterized in that: An air outlet pipe (9) is provided on the upper surface of the reaction kettle (1) and on one side of the first motor (5), and a feed port (8) is provided on the surface of the heating box (2).

7. The crystallization device for purifying high-purity ethylene according to claim 1, characterized in that: The lower surface of the reaction kettle (1) is provided with a discharge port (10), the discharge port (10) is provided with a solenoid valve (11), and the stirring rod (6) is tangent to the inner wall of the reaction kettle (1).

8. The crystallization device for purifying high-purity ethylene according to claim 1, characterized in that: A liquid outlet (12) with a filter screen at one end is provided on one side of the lower end of the reaction kettle (1), and supporting legs arranged in an array are provided on the lower surface of the reaction kettle (1).

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