Stirring kettle for processing diisooctyl phosphate

Abstract

The utility model relates to a stirring kettle, in particular to a stirring kettle for processing diisooctyl phosphate, which is characterized in that an upper kettle body and a lower enlarged kettle body of a kettle body are in the shape of a big-end-down narrow-mouthed bottle, a motor is arranged in the middle of the upper end surface of the upper kettle body, and a pressure gauge, a pressure release valve and a feeding pipe with a valve are respectively arranged around the motor on the upper end surface of the kettle body; a stirring shaft at the lower part of the motor is positioned in the lower enlarged kettle body, a stirrer is arranged at the lower part of the stirring shaft, a plurality of S-shaped inclined plates are arranged on four walls in the lower enlarged kettle body at intervals, a discharge hole is formed in a bottom plate in the lower enlarged kettle body, and a vertical pipe of the lower valve body is fixedly connected with the outer edge of a lower opening of the discharge hole; a fully-covered enamel inner surface is arranged on the inner surface of the kettle body; according to the invention, the lower part of the kettle body is arranged to be of the diameter-expanding structure, so that the diisooctyl phosphate is controlled at the bottom during stirring, and the stirring of the diisooctyl phosphate is in a rolling vortex manner by the S-shaped inclined plate, so that the stirring time is effectively saved, and the stirring effect is improved.

Description

Technical Field

[0001] The present disclosure relates to a stirring kettle, in particular to a diisooctyl phosphate stirring kettle, and more particularly to a stirring kettle for processing diisooctyl phosphate which is easy to clean and has increased stirring efficiency. Background Art

[0002] Diisooctyl phosphate (abbreviated as P204) is an acidic phosphorus-type extractant, which is mainly suitable for the extraction and separation of rare earths and non-ferrous metals including cobalt, nickel, gold, copper, indium and other electrolytic metals. It is also used in the pharmaceutical, printing and dyeing, and oil and chemical wastewater treatment industries. Diisooctyl phosphate is an industrial extractant widely used in nuclear fuel (uranium) extraction, rare earth element separation and non-ferrous metal extraction. P204 phosphate is insoluble in water but soluble in organic solvents such as acetone and ethanol. The synthesis process of diisooctyl phosphate includes raw materials of oxyphosphorus and octanol, which are obtained by esterification, alkaline hydrolysis, acidification reaction, water washing, and alcohol distillation followed by dealcoholization. The acidification reaction step is to use a stirring kettle for stirring, and the stirring kettle is fully stirred to achieve the purpose of improving the efficiency of alkaline hydrolysis. The current stirring kettle is cylindrical in structure, and the raw materials will rotate around the bottom and inner wall of the cylindrical stirring kettle during stirring, so the alkaline hydrolysis efficiency is not high and takes a long time. Summary of the invention

[0003] The purpose of the present invention is to disclose a stirring kettle for processing diisooctyl phosphate based on the deficiencies of the prior art. The lower part of the kettle body is set as an expanded diameter structure, so that the diisooctyl phosphate is controlled at the bottom during stirring, and the stirring of the diisooctyl phosphate is tumbling and mediating by the S-shaped inclined plate, which effectively saves the stirring time and increases the stirring effect.

[0004] In order to achieve the invention purpose of this disclosure, this application discloses the following technical solutions:

[0005] A stirring kettle for processing diisooctyl phosphate comprises a kettle body, a motor, a pressure gauge, a pressure relief valve, a feed pipe, a valve, an agitator and a lower valve body. The upper kettle body and the lower enlarged kettle body of the kettle body are in the shape of a narrow-mouthed bottle with a larger bottom and a smaller top. A motor is arranged in the middle of the upper end surface of the upper kettle body. A pressure gauge, a pressure relief valve and a feed pipe with a valve are arranged around the motor on the upper end surface of the kettle body respectively. The stirring shaft at the lower part of the motor is located in the lower enlarged kettle body, and the agitator is arranged at the lower part of the stirring shaft. A plurality of S-shaped inclined plates are arranged at intervals on the four walls in the lower enlarged kettle body. A discharge port is arranged on the bottom plate in the lower enlarged kettle body, and a vertical pipe of the lower valve body is fixedly connected to the outer edge of the lower port of the discharge port. The inner surface of the kettle body is provided with a fully covered enamel inner surface.

[0006] The stirring kettle for processing diisooctyl phosphate is provided with an elliptical transition between the upper kettle body and the upper end surface flat plate of the upper kettle body, a connecting flange A is provided at the lower end of the upper kettle body, a connecting tube with the same diameter as the upper kettle body is provided at the upper part of the lower enlarged kettle body, a connecting flange B is provided at the upper end of the connecting tube, the connecting flange A of the upper kettle body is fixedly connected with the connecting flange B at the upper end of the connecting tube by connecting screws and nuts, and a sealing ring is provided between the opposite surfaces of the connecting flange A and the connecting flange B.

[0007] The stirring kettle for processing diisooctyl phosphate is characterized in that the lower part of the enlarged kettle body is arranged as a disc-shaped kettle bottom, the enlarged kettle body and the disc-shaped kettle bottom present a gyroscope-shaped structure, a flat bottom plate is arranged in the middle part of the lower end of the sub-disc-shaped kettle bottom, a discharge port is arranged in the middle part of the bottom plate, a vertical pipe of the lower valve body is fixedly connected around the discharge port of the bottom plate, a side pipe is arranged on one side of the middle part of the vertical pipe, a sealing plate arranged at the upper end of the lifting rod corresponds to the discharge port, a rubber plate is arranged on the upper surface of the sealing plate, a lower sealing column is arranged at the outer edge of the middle part of the lifting rod, a rubber ring at the outer edge of the lower sealing column corresponds to the lower part of the side tube, the lower part of the lifting rod is passed through the inner hole of the upper push screw tube, the outer edge of the upper push screw tube is threadedly connected to the reduced diameter inner screw tube at the lower end of the connecting tube, and a handle is sleeved on the outer six sides of the outer edge of the lower part of the upper push screw tube.

[0008] The stirring kettle for processing diisooctyl phosphate has a plurality of legs arranged around the lower part of the enlarged kettle body and the disc-shaped kettle bottom.

[0009] The stirring kettle for processing diisooctyl phosphate is provided with a diameter expansion plate on the outer edge of the upper end of the push-up spiral tube.

[0010] The stirring kettle for processing diisooctyl phosphate is provided with an exhaust hole on a flat plate between the lower end of a connecting pipe and the upper end of an inner spiral pipe with a reduced diameter.

[0011] The stirring kettle for processing diisooctyl phosphate is provided with a pull ring at the lower end of the lifting rod.

[0012] The stirring kettle for processing diisooctyl phosphate has a plurality of annular grooves arranged at intervals on the outer edge surface of the lower sealing column, and rubber rings matching the number of the annular grooves are sleeved in the annular grooves.

[0013] In the stirring kettle for processing diisooctyl phosphate, a plurality of radial connecting rods are arranged between the outer ring and the inner ring of the handle, and an inner hexagonal hole is arranged in the middle of the inner ring.

[0014] The stirring kettle for processing diisooctyl phosphate has a conical surface spaced apart on the upper part of the sealing plate, and the middle hole of the sealing plate is sleeved in the annular groove between the sealing plate and the conical surface.

[0015] Through the above disclosure, the beneficial effects of the present disclosure are:

[0016] The stirred kettle for processing diisooctyl phosphate disclosed in the present invention reduces ineffective stirring of raw materials along the upper kettle wall during stirring by setting the kettle body to a narrow-mouthed bottle-like structure with a larger bottom and a smaller top. Since the upper mouth of the kettle body is enlarged at the bottom and combined with the S-shaped inclined plate, vortex boiling stirring is obtained, thereby achieving the purpose of greatly improving the efficiency of alkaline hydrolysis and shortening the time of the alkaline hydrolysis process. The present invention controls the diisooctyl phosphate raw material at the bottom during stirring, and the S-shaped inclined plate causes the stirring of the diisooctyl phosphate to be tumbling and mediating, which effectively saves stirring time and increases the stirring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the structure of the present disclosure;

[0018] Figure 2 is a schematic diagram of the assembly structure of the lower valve body disclosed in the present invention;

[0019] Figure 3 This is a schematic diagram of the valve core assembly structure of the lower valve body disclosed in the present invention;

[0020] Figure 4 is a schematic diagram of the handle structure of the present invention;

[0021] In the figure: 1. Motor; 2. Pressure gauge; 3. Pressure relief valve; 4. Valve; 5. Feed pipe; 6. Elliptical transition; 7. Upper kettle body; 8. Sealing ring; 9. Connecting screws; 10. Connecting flange A; 11. Connecting flange B; 12. Connecting cylinder; 13. Enamel inner surface; 14. Stirring shaft; 15. S-shaped inclined plate; 16. Lower enlarged kettle body; 17. Stirrer; 18. Coupling; 19. Disc bottom of kettle; 20. Bottom plate; 21. Lower valve body; 22. Discharge pipe; 23. Handle; 2 4. Pull ring; 25. Support leg; 26. Discharge port; 27. Vertical pipe; 28. Side pipe; 29. ​​Rubber plate; 30. Sealing plate; 31. Rubber ring; 32. Lower sealing column; 33. Lifting rod; 34. Hole; 35. Expansion plate; 36. Push-up screw tube; 37. Inner hole; 38. External hexagonal surface; 39. Connecting pipe; 40. Exhaust hole; 41. Reduced diameter internal screw tube; 42. Connecting rod; 43. Internal hexagonal hole; 44. Inner ring; 45. Conical surface; 46. Annular groove; 47. Annular groove. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings so as to more clearly understand the invention objectives, features and advantages of the present invention. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to explain that the technical solution of the present invention is not limited to one implementation method.

[0023] Combined with Figures 1 to 4The stirring kettle for processing diisooctyl phosphate described in the invention comprises a kettle body, a motor 1, a pressure gauge 2, a pressure relief valve 3, a feed pipe 5, a valve 4, an agitator 17 and a lower valve body 21. The upper kettle body 7 and the lower enlarged kettle body 16 of the kettle body are in the shape of a narrow-mouthed bottle with a larger bottom and a smaller top. A motor 1 is provided in the middle of the upper end surface of the upper kettle body 7. A pressure gauge 2, a pressure relief valve 3 and a feed pipe 5 with a valve 4 are respectively provided around the motor 1 on the upper end surface of the kettle body. Lifting handles are respectively provided on both sides of the upper kettle body 7; a stirring shaft 14 at the lower part of the motor 1 is located in the lower enlarged kettle body 16, an agitator 17 is provided at the lower part of the stirring shaft 14, a plurality of S-shaped inclined plates 15 are spaced apart on the four walls in the lower enlarged kettle body 16, a discharge port 26 is provided on the bottom plate 20 in the lower enlarged kettle body 16, and a riser 27 of the lower valve body 21 is fixedly connected to the lower outer edge of the discharge port 26; the inner surface of the kettle body is provided with a fully covered enamel inner surface 13.

[0024] Combined with Figure 1 An elliptical transition 6 is arranged between the upper kettle body 7 and the upper end surface flat plate of the upper kettle body 7, a connecting flange A10 is arranged at the lower end of the upper kettle body 7, a connecting tube 12 with the same diameter as the upper kettle body 7 is arranged on the upper part of the lower enlarged kettle body 16, a connecting flange B11 is arranged on the upper end of the connecting tube 12, the connecting flange A10 of the upper kettle body 7 and the connecting flange B11 at the upper end of the connecting tube 12 are fixedly connected by connecting screws 9 and nuts, and a sealing ring 8 is arranged between the opposite surfaces of the connecting flange A10 and the connecting flange B11.

[0025] Combined with Figures 1 to 4The lower part of the lower enlarged kettle body 16 is set as a disc-shaped kettle bottom 19, and the lower enlarged kettle body 16 and the disc-shaped kettle bottom 19 are in a gyro-shaped structure. A flat bottom plate 20 is set in the middle of the lower end of the sub-disc-shaped kettle bottom 19. A plurality of legs 25 are set around the lower part of the lower enlarged kettle body 16 and the disc-shaped kettle bottom 19. A discharge port 26 is set in the middle of the bottom plate 20. The vertical pipe 27 of the lower valve body 21 is fixedly connected around the discharge port 26 of the bottom plate 20. A side tube 28 is provided on one side of the middle of the tube 27, and the side tube 28 is connected to the discharge tube 22. A sealing plate 30 provided on the upper end of the lifting rod 33 corresponds to the discharge port 26. A rubber plate 29 is provided on the upper surface of the sealing plate 30. A lower sealing column 32 is provided on the outer edge of the middle of the lifting rod 33. A conical surface 45 is provided at intervals on the upper part of the sealing plate 30. The middle hole of the sealing plate 30 is sleeved in the annular groove 46 between the sealing plate 30 and the conical surface 45. The outer edge surface of the column 32 is provided with a plurality of annular grooves 47 at intervals, and rubber rings 31 matching the number of annular grooves 47 are sleeved in the annular grooves 47, the rubber ring 31 on the outer edge of the lower sealing column 32 corresponds to the lower part of the side tube 28, the lower part of the lifting rod 33 is passed through the inner hole 37 of the upper push screw 36, and an expansion plate 35 is provided on the outer edge of the upper end of the upper push screw 36, the outer edge of the upper push screw 36 is threadedly connected with the reduced diameter inner screw 41 at the lower end of the connecting tube 39, and an exhaust hole 40 is provided on the flat plate between the lower end of the connecting tube 39 and the upper end of the reduced diameter inner screw 41, and a handle 23 is sleeved on the outer hexagonal surface 38 of the lower outer edge of the upper push screw 36, and a plurality of radial connecting rods 42 are provided between the outer ring and the inner ring 44 of the handle 23, and an inner hexagonal hole 43 is provided in the middle of the inner ring 44, and a hole 34 is provided on the cutting surface of the lower end of the lifting rod 33, and the upper part of the pull ring 24 is passed through the hole 34.

[0026] The stirring kettle for processing diisooctyl phosphate disclosed in the present invention is used in combination with the attached Figures 1 to 4 The manufacturing and use methods of the present invention are further explained; the upper kettle body 7 and the lower enlarged kettle body 16 are made of stainless steel material, the inner walls of the upper kettle body 7 and the lower enlarged kettle body 16 are lined with glass containing high silicon dioxide, and then high-temperature calcination is used to form an enamel inner surface 13; the enameled surface is also made on the outside of the stirring shaft 14, the coupling 18 and the stirrer 17; finally, the stirring kettle for processing diisooctyl phosphate is assembled according to the drawings.

[0027] When in use, first use the feed pipe 5 and the vacuum pump to evacuate the kettle body, use the pressure gauge 2 to observe whether the vacuum degree reaches the negative pressure required by the design, add the raw materials formed by mixing the raw materials of oxygen phosphorus and octanol in proportion after esterification and alkaline hydrolysis into the stirring kettle through the feed pipe 5, and then turn on the motor 1 to stir and rotate the raw materials in the lower enlarged kettle body 16. At this time, the raw materials in the kettle body are restricted to stir and rotate at the lower part by the closing effect of the upper part of the lower enlarged kettle body 16. At the same time, the S-shaped inclined plate 15 pushes the raw materials attached to the inner wall to fall into the middle of the lower enlarged kettle body 16 for vortex boiling stirring, thereby increasing the stirring efficiency; in the above process, the rise The rubber plate 29 at the upper end of the descending rod 33 has been blocking the discharge port 26, so that the bottom plate 20 of the enlarged kettle body 16 is in a flat state, and the problem of a small amount of raw materials being unable to be stirred due to the storage of raw materials in the recessed pipeline will not occur; after the acidification reaction is completed, the negative pressure in the kettle body is released by using the pressure relief valve 3, and the handle 23 is screwed to push the upward screw tube 36 downward. At this time, the lower sealing column 32 and the sealing plate 30 that have lost the top force move downward, and the raw materials after the acidification reaction enter the upper part of the vertical pipe 27 from the discharge port 26 and enter the side pipe 28, and then flow out to the container through the discharge pipe 22, and finally get diisooctyl phosphate by water washing, alcohol distillation and dealcoholization.

[0028] The preferred embodiments of the present disclosure have been described in detail above, but it should be understood that after reading the above teachings of the present disclosure, those skilled in the art may make various changes or modifications within the scope of protection of the present disclosure. These equivalent forms also fall within the scope defined by the claims attached to this application.

[0029] Parts not described in detail in this disclosure are prior art.

Claims

1. A stirring kettle for processing diisooctyl phosphate, comprising a kettle body, a motor (1), a pressure gauge (2), a pressure relief valve (3), a feed pipe (5), a valve (4), an agitator (17) and a lower valve body (21), wherein: The upper kettle body (7) and the lower enlarged kettle body (16) of the kettle body are in the shape of a narrow-mouthed bottle with a larger bottom and a smaller top. A motor (1) is provided in the middle of the upper end surface of the upper kettle body (7). A pressure gauge (2), a pressure relief valve (3) and a feed pipe (5) with a valve (4) are provided around the motor (1) on the upper end surface of the kettle body. A stirring shaft (14) at the lower part of the motor (1) is located in the lower enlarged kettle body (16). A stirrer (17) is provided at the lower part of the stirring shaft (14). A plurality of S-shaped inclined plates (15) are provided at intervals on the four walls of the lower enlarged kettle body (16). A discharge port (26) is provided on the bottom plate (20) in the lower enlarged kettle body (16). A riser (27) of the lower valve body (21) is fixedly connected to the lower outer edge of the discharge port (26). The inner surface of the kettle body is provided with a fully covered enamel inner surface (13).

2. The stirred tank for processing diisooctyl phosphate according to claim 1, characterized in that: An elliptical transition (6) is provided between the upper kettle body (7) and the upper end surface flat plate of the upper kettle body (7); a connecting flange A (10) is provided at the lower end of the upper kettle body (7); a connecting tube (12) having the same diameter as the upper kettle body (7) is provided at the upper part of the lower enlarged kettle body (16); a connecting flange B (11) is provided at the upper end of the connecting tube (12); the connecting flange A (10) of the upper kettle body (7) and the connecting flange B (11) at the upper end of the connecting tube (12) are fixedly connected by connecting screws (9) and nuts; a sealing ring (8) is provided between the opposite surfaces of the connecting flange A (10) and the connecting flange B (11).

3. The stirred tank for processing diisooctyl phosphate according to claim 1, characterized in that: The lower part of the lower enlarged kettle body (16) is provided with a disc-shaped kettle bottom (19), and the lower enlarged kettle body (16) and the disc-shaped kettle bottom (19) present a gyro-shaped structure. A flat bottom plate (20) is provided in the middle of the lower end of the sub-disc-shaped kettle bottom (19), and a discharge port (26) is provided in the middle of the bottom plate (20). The vertical pipe (27) of the lower valve body (21) is fixedly connected around the discharge port (26) of the bottom plate (20), and a side pipe (28) is provided on one side of the middle part of the vertical pipe (27). A sealing plate (30) provided at the upper end of the lifting rod (33) corresponds to The material outlet (26) is provided with a rubber plate (29) on the upper surface of the blocking plate (30), a lower sealing column (32) is provided on the outer edge of the middle part of the lifting rod (33), a rubber ring (31) on the outer edge of the lower sealing column (32) corresponds to the lower part of the side tube (28), the lower part of the lifting rod (33) is inserted into the inner hole (37) of the upper push screw tube (36), the outer edge of the upper push screw tube (36) is threadedly connected with the reduced diameter inner screw tube (41) at the lower end of the connecting tube (39), and a handle (23) is sleeved on the outer hexagonal surface (38) of the lower outer edge of the upper push screw tube (36).

4. The stirred tank for processing diisooctyl phosphate according to claim 3, characterized in that: A plurality of supporting legs (25) are arranged around the lower part of the enlarged kettle body (16) and the disc-shaped kettle bottom (19).

5. The stirred tank for processing diisooctyl phosphate according to claim 3, characterized in that: An expansion plate (35) is provided on the outer edge of the upper end of the push-up spiral tube (36).

6. The stirred tank for processing diisooctyl phosphate according to claim 3, characterized in that: An exhaust hole (40) is provided on the flat plate between the lower end of the connecting pipe (39) and the upper end of the reduced diameter inner spiral pipe (41).

7. The stirred tank for processing diisooctyl phosphate according to claim 3, characterized in that: A pull ring (24) is provided at the lower end of the lifting rod (33).

8. The stirred tank for processing diisooctyl phosphate according to claim 3, characterized in that: A plurality of annular grooves (47) are arranged at intervals on the outer edge surface of the lower sealing column (32), and rubber rings (31) matching the number of the annular grooves (47) are sleeved in the annular grooves (47).

9. The stirred tank for processing diisooctyl phosphate according to claim 3, characterized in that: A plurality of radial connecting rods (42) are provided between the outer ring and the inner ring (44) of the handle (23), and an inner hexagonal hole (43) is provided in the middle of the inner ring (44).

10. The stirred tank for processing diisooctyl phosphate according to claim 3, characterized in that: A conical surface (45) is provided at intervals on the upper portion of the blocking plate (30), and a middle hole of the blocking plate (30) is sleeved in an annular groove (46) between the blocking plate (30) and the conical surface (45).

Images