Industrial naphthalene production and recovery device

Abstract

The utility model relates to the technical field of naphthalene production and recovery, in particular to an industrial naphthalene production and recovery device. According to the technical scheme, the device comprises a cold water tank and a condensation tank, an inner tank wall is welded to the inner wall of the condensation tank, a water inlet pipe is fixedly connected to the position, close to the lower surface, of the outer surface of the condensation tank, a tank cover is fixedly installed on the upper surface of the condensation tank, and an air inlet pipe is fixedly connected to one side of the upper surface of the tank cover; a rotating pipe is rotatably installed at the axis position of the upper surface of the tank cover, a first spiral blade is welded to the outer surface of the rotating pipe and located in the inner tank wall, a transmission box is fixedly installed on the upper surface of the tank cover, a rotating motor is fixedly installed on the upper surface of the transmission box, and a collecting hopper is welded to the lower surface of the condensation tank; and the lower surface of the collecting hopper is fixedly connected with a discharge valve. According to the utility model, the naphthalene steam can be condensed and crystallized when the naphthalene steam is not in contact with condensed water, so that the step of separating the condensed water from the crystallized naphthalene is omitted, and the recovery efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of naphthalene production and recovery, in particular to an industrial naphthalene production and recovery device. Background Art

[0002] Industrial naphthalene is an important raw material in the chemical industry. It is mainly produced by further processing and separation of kerosene. During the industrial production of naphthalene, since naphthalene is volatile and toxic, if it evaporates into the air, it is easy to cause harm to the human body. Therefore, it needs to be recycled, which also reduces material costs.

[0003] At present, the recovery process of industrial naphthalene production usually discharges the collected naphthalene vapor into a condenser, so that the naphthalene vapor condenses and crystallizes in the condensed water inside the condenser. However, the crystallized naphthalene and the condensed water need to be separated to recover the naphthalene, which is rather complicated. Therefore, we propose an industrial naphthalene production and recovery device. Utility Model Content

[0004] The utility model aims to provide an industrial naphthalene production and recovery device, which has the advantages of being able to condense and crystallize naphthalene vapor without the naphthalene vapor coming into contact with condensed water, thereby eliminating the step of separating condensed water and crystallized naphthalene and improving recovery efficiency, and solving the problem that the current recovery in the industrial naphthalene production process is usually to discharge the collected naphthalene vapor into a condensation tank, so that the naphthalene vapor is condensed and crystallized in the condensed water inside the condensation tank, but the subsequent need to separate the crystallized naphthalene and condensed water before the naphthalene can be recovered is relatively cumbersome.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an industrial naphthalene production and recovery device, comprising a cold water tank and a condensing tank, the inner wall of the condensing tank is welded with an inner tank wall, the outer surface of the condensing tank is fixedly connected with a water inlet pipe near the lower surface, the upper surface of the condensing tank is fixedly installed with a tank cover, one side of the upper surface of the tank cover is fixedly connected with an air inlet pipe, a rotating tube is rotatably installed at the axial position of the upper surface of the tank cover, a first spiral blade is welded on the outer surface of the rotating tube, and the first spiral blade is located inside the inner tank wall, a transmission box is fixedly installed on the upper surface of the tank cover, a rotating motor is fixedly installed on the upper surface of the transmission box, a collecting bucket is welded on the lower surface of the condensing tank, and a discharge valve is fixedly connected to the lower surface of the collecting bucket.

[0006] Preferably, a transmission gear is fixedly sleeved on the outer surface of the rotating tube, a motor gear is fixedly connected to the end of the output shaft of the rotating motor, and the motor gear and the transmission gear are meshed, and the motor gear and the transmission gear are both located inside the transmission box.

[0007] Preferably, the tank cover and the condensation tank are fixed by bolts.

[0008] Preferably, four legs are fixedly connected at equal intervals on the lower surface of the condensation tank near the edge in a circular array.

[0009] Preferably, a second spiral blade is welded between the inner tank wall and the condensation tank.

[0010] Preferably, the outer surface of the condensation tank is provided with a heat insulation coating.

[0011] Preferably, a water pump is fixedly installed at the bottom of the inner wall of the cold water tank, and the end of the water pump output pipe and the end of the water inlet pipe are fixedly connected.

[0012] Preferably, a return pipe is fixedly connected to the outer surface of the condensing tank near the upper surface, and the end of the return pipe is fixedly connected to the upper surface of the cold water tank.

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

[0014] 1. The utility model achieves the effect of condensing and crystallizing naphthalene steam without contacting condensed water by arranging a cold water tank, a condensing tank, a rotating pipe, an inner tank wall, a first spiral blade, a rotating motor and a transmission box, thereby eliminating the need for separating condensed water and crystallized naphthalene and improving the recovery efficiency. A chamber is formed between the condensing tank and the inner tank wall, condensed water enters the interior of the chamber through a water inlet pipe, and the naphthalene steam generated in the preparation of naphthalene is discharged into the interior of the condensing tank through an air inlet pipe after being collected and contacted with the inner tank wall, condensed and crystallized after being cooled, and a spiral steam flow channel is formed between the first spiral blade, the rotating pipe and the inner tank wall, thereby extending the process of naphthalene steam, being able to fully contact with the inner tank wall, and when the rotating pipe drives the first spiral blade to rotate, the crystallized naphthalene on the inner tank wall can be scraped off, and the crystallized naphthalene falls into the inside of a collecting hopper, and the crystallized naphthalene can be discharged by opening a discharge valve, while air is discharged from the rotating pipe.

[0015] 2. The utility model achieves the effect of improving the condensation and crystallization efficiency of naphthalene vapor by arranging the second spiral blade. A chamber is formed between the condensation tank and the inner tank wall. The second spiral blade allows the condensed water to flow in a spiral in the chamber, so that it is in uniform and full contact with the inner tank wall, which is beneficial to the cooling of the inner tank wall, thereby improving the condensation and crystallization efficiency of naphthalene vapor.

[0016] 3. The utility model can prevent the external temperature from affecting the condensed water inside the condensation tank by providing a heat-insulating coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the partial main cross-sectional structure of the cold water tank of the utility model;

[0020] Figure 4 It is a schematic diagram of the partial main cross-sectional structure of the condensing tank of the utility model.

[0021] Figure numerals: 1. cold water tank; 2. return pipe; 3. air inlet pipe; 4. tank cover; 5. rotating pipe; 6. rotating motor; 7. transmission box; 8. condensate tank; 9. support leg; 10. discharge valve; 11. water inlet pipe; 12. collecting bucket; 13. water pump; 14. first spiral blade; 15. transmission gear; 16. motor gear; 17. thermal insulation coating; 18. inner tank wall; 19. second spiral blade. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] like Figure 1-Figure 4 As shown, an industrial naphthalene production and recovery device proposed by the utility model includes a cold water tank 1 and a condensation tank 8. An inner tank wall 18 is welded to the inner wall of the condensation tank 8. The inner tank wall 18 is made of heat-conducting material. An annular chamber is formed between the inner tank wall 18 and the condensation tank 8 for the flow of condensed water. A second spiral blade 19 is welded between the inner tank wall 18 and the condensation tank 8. The second spiral blade 19 allows the condensed water to flow in a spiral in the chamber, and then the condensed water is evenly and fully contacted with the inner tank wall 18, which is beneficial to the cooling of the inner tank wall 18. The outer surface of the condensation tank 8 is provided with a heat-insulating coating 17, which can prevent the external temperature from affecting the condensed water inside the condensation tank 8.

[0024] An inlet pipe 11 is fixedly connected to the outer surface of the condensation tank 8 near the lower surface, a water pump 13 is fixedly installed at the bottom of the inner wall of the cold water tank 1, and the end of the output pipe of the water pump 13 is fixedly connected to the end of the inlet pipe 11, and a return pipe 2 is fixedly connected to the outer surface of the condensation tank 8 near the upper surface, and the end of the return pipe 2 is fixedly connected to the upper surface of the cold water tank 1. The water pump 13 transports the condensed water in the cold water tank 1 to the chamber between the inner tank wall 18 and the condensation tank 8, and flows from bottom to top, then flows out from the return pipe 2, and flows back to the cold water tank 1.

[0025] A tank cover 4 is fixedly installed on the upper surface of the condensing tank 8, and the tank cover 4 and the condensing tank 8 are fixed by bolts. An air inlet pipe 3 is fixedly connected to one side of the upper surface of the tank cover 4. The naphthalene vapor collected during the naphthalene production enters the condensing tank 8 through the air inlet pipe 3. A rotating tube 5 is rotatably installed at the axial position of the upper surface of the tank cover 4. A first spiral blade 14 is welded on the outer surface of the rotating tube 5, and the first spiral blade 14 is located inside the inner tank wall 18. A spiral steam flow channel is formed between the inner tank wall 18, the rotating tube 5 and the first spiral blade 14. When the collected naphthalene vapor flows from the inside of the spiral channel, it contacts the inner tank wall 18 and is cooled and condensed and crystallized.

[0026] A transmission box 7 is fixedly installed on the upper surface of the tank cover 4, and a rotating motor 6 is fixedly installed on the upper surface of the transmission box 7. A transmission gear 15 is fixedly sleeved on the outer surface of the rotating tube 5. A motor gear 16 is fixedly connected to the end of the output shaft of the rotating motor 6, and the motor gear 16 and the transmission gear 15 are meshed. The motor gear 16 and the transmission gear 15 are both located inside the transmission box 7. The rotating motor 6 drives the rotating tube 5 and the first spiral blade 14 on its outer surface to rotate through the meshing motor gear 16 and the transmission gear 15. A collecting bucket 12 is welded on the lower surface of the condensation tank 8, and a discharge valve 10 is fixedly connected to the lower surface of the collecting bucket 12. Four legs 9 are fixedly connected in a circular array at equal intervals near the edge of the lower surface of the condensation tank 8.

[0027] When the utility model is in use, condensed water in the cold water tank 1 enters into the chamber between the inner tank wall 18 and the condensation tank 8 through the water inlet pipe 11, and the naphthalene vapor generated in the preparation of naphthalene is collected and discharged into the condensation tank 8 through the air inlet pipe 3 and contacts with the inner tank wall 18, condenses and crystallizes after being cooled, and a spiral steam flow channel is formed between the first spiral blade 14, the rotating tube 5 and the inner tank wall 18, thereby extending the flow of the naphthalene vapor so that it can fully contact with the inner tank wall 18, and when the rotating tube 5 drives the first spiral blade 14 to rotate, the crystallized naphthalene on the inner tank wall 18 can be scraped off, and the crystallized naphthalene falls into the collecting bucket 12, and the crystallized naphthalene can be discharged by opening the discharge valve 10, and the air is discharged from the rotating tube 5.

Claims

1. An industrial naphthalene production and recovery device, comprising a cold water tank (1) and a condensation tank (8), characterized in that: The inner wall of the condensing tank (8) is welded with an inner tank wall (18); the outer surface of the condensing tank (8) is fixedly connected with a water inlet pipe (11) near the lower surface; the upper surface of the condensing tank (8) is fixedly mounted with a tank cover (4); one side of the upper surface of the tank cover (4) is fixedly connected with an air inlet pipe (3); a rotating tube (5) is rotatably mounted at an axial position on the upper surface of the tank cover (4); a first spiral blade (14) is welded on the outer surface of the rotating tube (5), and the first spiral blade (14) is located inside the inner tank wall (18); a transmission box (7) is fixedly mounted on the upper surface of the tank cover (4); a rotating motor (6) is fixedly mounted on the upper surface of the transmission box (7); a collecting hopper (12) is welded on the lower surface of the condensing tank (8); and a discharge valve (10) is fixedly connected to the lower surface of the collecting hopper (12).

2. An industrial naphthalene production and recovery device according to claim 1, characterized in that: A transmission gear (15) is fixedly sleeved on the outer surface of the rotating tube (5), a motor gear (16) is fixedly connected to the end of the output shaft of the rotating motor (6), and the motor gear (16) and the transmission gear (15) are meshed with each other. Both the motor gear (16) and the transmission gear (15) are located inside the transmission box (7).

3. An industrial naphthalene production and recovery device according to claim 1, characterized in that: The tank cover (4) and the condensation tank (8) are fixed by bolts.

4. An industrial naphthalene production and recovery device according to claim 3, characterized in that: Four legs (9) are fixedly connected at equal intervals in a circular array near the edge of the lower surface of the condensation tank (8).

5. An industrial naphthalene production and recovery device according to claim 1, characterized in that: A second spiral blade (19) is welded between the inner tank wall (18) and the condensation tank (8).

6. An industrial naphthalene production and recovery device according to claim 1, characterized in that: The outer surface of the condensation tank (8) is provided with a heat insulation coating (17).

7. An industrial naphthalene production and recovery device according to claim 1, characterized in that: A water pump (13) is fixedly installed at the bottom of the inner wall of the cold water tank (1), and the end of the output pipe of the water pump (13) is fixedly connected to the end of the water inlet pipe (11).

8. An industrial naphthalene production and recovery device according to claim 1, characterized in that: A return pipe (2) is fixedly connected to the outer surface of the condensation tank (8) near the upper surface, and the end of the return pipe (2) is fixedly connected to the upper surface of the cold water tank (1).

Images