Paraquat waste salt treatment device

Abstract

The utility model discloses a paraquat waste salt treatment device, which belongs to the technical field of paraquat waste salt treatment and comprises a sublimation tank, a heating jacket is arranged on the outer wall of the sublimation tank, a first heater, a second heater and a third heater are arranged in the sublimation tank, a gas phase outlet is arranged on the sublimation tank and is connected with an inlet of a sublimation pipeline, and the sublimation pipeline is communicated with the sublimation tank. An outlet of the sublimation pipeline is connected with a gas phase inlet, the gas phase inlet is formed in a desublimation tank, and a jacket is arranged on the outer wall of the desublimation tank. The sublimation device can solve the problems that existing sublimation materials are heated unevenly, sublimation is not thorough, consequently, the materials are lost, and a sublimation pipeline is prone to being blocked. The device solves the problem that the sublimation pipeline is easy to block, the condensation system of the desublimation tank is uniformly distributed, the sublimation gas phase is promoted to be effectively condensed, the material loss is reduced, the separation and purification of paraquat solid waste salt can be realized, the content of ammonium chloride obtained by sublimation is more than 99%, and the device has the characteristics of simplicity in operation and easiness in industrialization.

Description

Technical Field

[0001] The utility model relates to the technical field of paraquat waste salt treatment, in particular to a paraquat waste salt treatment device. Background Art

[0002] Paraquat, also known as paraquat, is a bipyridine heterocyclic compound. Its products include dichloride and dimethyl sulfate. As a herbicide, it only harms the green stems and leaves of crops. It is easily passivated after contact with the soil and will not damage the roots of the plants or the seeds in the soil, so it is safe for crops.

[0003] However, solid waste salt is produced during the production of paraquat. The salt contains impurities such as ammonium chloride, sodium chloride, and tar. Due to its complex composition, it cannot be used directly. Solvent washing and drying, recrystallization, and hydrogen peroxide oxidation are usually used to remove organic matter. However, ammonium chloride and sodium chloride are difficult to separate, and additional organic solvents and oxidants need to be added, which increases the post-processing process and is not conducive to industrial application.

[0004] Sublimation is a common method for solid purification. The mixture is purified by the difference in sublimation temperature and condensation temperature between the target substance and the impurity. Conventional sublimation devices have problems such as uneven heating of sublimated materials, incomplete condensation leading to material loss, and easy blockage of sublimation pipelines, which directly limit their industrial application. Utility Model Content

[0005] The purpose of the utility model is to provide a paraquat waste salt treatment device, which solves the problem that the sublimation pipeline is easily blocked. The condensation system of the sublimation tank is evenly distributed, which promotes the effective condensation of the sublimated gas phase and reduces material loss. The separation and purification of paraquat solid waste salt can be achieved, and the content of ammonium chloride obtained by sublimation is above 99%. It has the characteristics of simple operation and easy industrialization, and can solve the problems in the prior art.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A paraquat waste salt treatment device comprises a sublimation tank, a heating jacket is arranged on the outer wall of the sublimation tank, a first heater, a second heater and a third heater are arranged in the sublimation tank, a gas phase outlet is arranged on the sublimation tank, the gas phase outlet is connected to the inlet of a sublimation pipe, the outlet of the sublimation pipe is connected to the gas phase inlet, the gas phase inlet is arranged on a desublimation tank, a jacket is arranged on the outer wall of the desublimation tank, the outer wall of the tank cover of the desublimation tank is connected to the tank cover coil, the tank cover of the desublimation tank is connected to the tank coil, the desublimation tank is provided with an exhaust gas outlet, the exhaust gas outlet is connected to the exhaust gas pipe, and the branch pipe of the exhaust gas pipe is connected to a vacuum pump.

[0008] Preferably, the first heater is connected to the upper left portion of the sublimation tank cover, the second heater is connected to the upper middle portion of the sublimation tank cover, and the third heater is connected to the upper right portion of the sublimation tank cover.

[0009] Preferably, the first heater, the second heater and the third heater are all independently controlled, and the first heater, the second heater and the third heater are increased or decreased according to usage needs.

[0010] Preferably, the desublimation tank structure is wide at the top and narrow at the bottom, and the discharge port of the desublimation tank is the bottom of the desublimation tank.

[0011] Preferably, the coils in the tank, the coils on the tank cover and the jacket are used for condensation and cooling.

[0012] Preferably, a heating and heat-insulating sleeve is provided on the sublimation pipe, and the heating medium of the heating and heat-insulating sleeve is the same as the heating medium in the heating sleeve.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model discloses a sublimation tank which is heated by a heating sleeve and a first heater, a second heater and a third heater in the sublimation tank, which can promote uniform heating of materials and improve sublimation efficiency. ... BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the paraquat waste salt treatment device of the utility model.

[0016] In the figure: 1. Heating jacket; 2. Sublimation tank; 3. First heater; 4. Second heater; 5. Third heater; 6. Gas phase outlet; 7. Sublimation pipeline; 71. Heating and insulation jacket; 8. Condensation tank; 9. Gas phase inlet; 10. Coil in tank; 11. Coil on tank cover; 12. Jacket; 13. Exhaust gas outlet; 14. Vacuum pump; 15. Exhaust gas pipeline. DETAILED DESCRIPTION

[0017] 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.

[0018] In order to solve the existing problems of uneven heating of sublimation materials, incomplete condensation leading to material loss, and easy blockage of sublimation pipelines, refer to Figure 1 , this embodiment provides the following technical solutions:

[0019] A paraquat waste salt treatment device comprises a sublimation tank 2, on the outer wall of which a heating jacket 1 is arranged.

[0020] A first heater 3 , a second heater 4 and a third heater 5 are arranged in the sublimation tank 2 .

[0021] In this embodiment, the first heater 3 is connected to the upper left part of the sublimation tank 2 cover, the second heater 4 is connected to the upper middle part of the sublimation tank 2 cover, and the third heater 5 is connected to the upper right part of the sublimation tank 2 cover.

[0022] In this embodiment, the first heater 3, the second heater 4 and the third heater 5 are all independently controlled. The first heater 3, the second heater 4 and the third heater 5 can be increased or decreased according to the use requirements to ensure that the sublimation material is heated evenly.

[0023] It should be noted that the heating of the heating jacket 1 on the sublimation tank 2 and the heating of the first heater 3, the second heater 4 and the third heater 5 in the sublimation tank 2 are used simultaneously, which can promote uniform heating of the material and improve the sublimation efficiency.

[0024] The sublimation tank 2 is provided with a gas phase outlet 6 , which is connected to the inlet of the sublimation pipeline 7 .

[0025] In this embodiment, a heating and heat-insulating sleeve 71 is provided on the sublimation pipe 7 , and the heating medium of the heating and heat-insulating sleeve 71 is the same as the heating medium in the heating sleeve 1 .

[0026] It should be noted that, by arranging the heating and heat-insulating sleeve 71 on the sublimation pipe 7 , the heating and heat-insulating sleeve 71 can prevent the sublimation gas phase from condensing in the sublimation pipe 7 , thereby avoiding clogging of the sublimation pipe 7 .

[0027] The outlet of the sublimation pipe 7 is connected to the gas phase inlet 9, and the gas phase inlet 9 is arranged on the desublimation tank 8. A jacket 12 is arranged on the outer wall of the desublimation tank 8. The outer wall of the tank cover of the desublimation tank 8 is connected to the tank cover coil 11. The tank cover of the desublimation tank 8 is connected to the tank coil 10. The desublimation tank 8 is provided with an exhaust gas outlet 13, and the exhaust gas outlet 13 is connected to the exhaust pipe 15. The branch pipe of the exhaust pipe 15 is connected to the vacuum pump 14.

[0028] In this embodiment, the structure of the desublimation tank 8 is wide at the top and narrow at the bottom, and the discharge port of the desublimation tank 8 is the bottom of the desublimation tank 8 .

[0029] In this embodiment, the coils 10 in the tank, the coils 11 on the tank cover and the jacket 12 are used for condensation and cooling.

[0030] Specifically, solid waste salt is put into the sublimation tank 2, and the vacuum pump 14 is turned on for vacuuming and nitrogen replacement. The heating jacket 1 of the sublimation tank 2 is heated, and the temperature control of the first heater 3, the second heater 4 and the third heater 5 are turned on in sequence. The heating temperature control of the sublimation pipeline 7 is turned on, and the jacket 12, the tank cover coil 11 and the tank coil 10 are turned on. The sublimated gas passes through the gas phase outlet 6 through the sublimation pipeline 7 to the sublimation tank 8 for condensation, and the uncondensed exhaust gas enters the exhaust gas treatment device from the exhaust pipeline 15 through the exhaust outlet 13. After sublimation is completed, ammonium chloride salt with a content of more than 99% is obtained in the sublimation tank 8, and the material is discharged from the bottom of the sublimation tank 8 and collected.

[0031] It should be noted that the heating sleeve 1 on the sublimation tank 2 is used simultaneously with the heating by the first heater 3, the second heater 4 and the third heater 5 in the sublimation tank 2, which can promote uniform heating of the material and improve the sublimation efficiency. The heating and insulation sleeve 71 is installed on the sublimation pipe 7 to prevent the sublimated gas from condensing in the sublimation pipe 7, thereby avoiding clogging of the sublimation pipe 7 and solving the problem of easy clogging of the sublimation pipe 7. The condensation system of the condensation tank 8 is evenly distributed, which promotes the effective condensation of the sublimated gas and reduces material loss. The separation and purification of paraquat solid waste salt can be realized, and the content of ammonium chloride obtained by sublimation is above 99%. It has the characteristics of simple operation and easy industrialization.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A paraquat waste salt treatment device, comprising a sublimation tank (2), characterized in that: A heating sleeve (1) is arranged on the outer wall of the sublimation tank (2), a first heater (3), a second heater (4) and a third heater (5) are arranged in the sublimation tank (2), a gas phase outlet (6) is arranged on the sublimation tank (2), the gas phase outlet (6) is connected to the inlet of the sublimation pipe (7), the outlet of the sublimation pipe (7) is connected to the gas phase inlet (9), the gas phase inlet (9) is arranged on the condensation tank (8), a jacket (12) is arranged on the outer wall of the condensation tank (8), the outer wall of the tank cover of the condensation tank (8) is connected to the tank cover coil (11), the tank cover of the condensation tank (8) is connected to the tank coil (10), the condensation tank (8) is provided with an exhaust gas outlet (13), the exhaust gas outlet (13) is connected to the exhaust gas pipe (15), and the branch pipe of the exhaust gas pipe (15) is connected to the vacuum pump (14).

2. A paraquat waste salt treatment device according to claim 1, characterized in that: The first heater (3) is connected to the upper left part of the tank cover of the sublimation tank (2), the second heater (4) is connected to the upper middle part of the tank cover of the sublimation tank (2), and the third heater (5) is connected to the upper right part of the tank cover of the sublimation tank (2).

3. A paraquat waste salt treatment device according to claim 2, characterized in that: The first heater (3), the second heater (4) and the third heater (5) are all independently controlled, and the first heater (3), the second heater (4) and the third heater (5) are increased or decreased according to usage needs.

4. The paraquat waste salt treatment device according to claim 3, characterized in that: The structure of the desublimation tank (8) is wide at the top and narrow at the bottom, and the discharge port of the desublimation tank (8) is the bottom of the desublimation tank (8).

5. A paraquat waste salt treatment device according to claim 4, characterized in that: The coils (10) in the tank, the coils (11) on the tank cover and the jacket (12) are used for condensation and cooling.

6. The paraquat waste salt treatment device according to claim 5, characterized in that: The sublimation pipe (7) is provided with a heating and heat-insulating sleeve (71), and the heating medium of the heating and heat-insulating sleeve (71) is the same as the heating medium in the heating sleeve (1).

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