Stirring kettle for preparing organic phosphoric acid extracting agent SN272

Abstract

The utility model relates to a stirring kettle, in particular to a stirring kettle for preparing an organic phosphoric acid extracting agent SN272, which is characterized in that a motor is arranged at the upper end of a kettle body, a stirrer is arranged at the lower end of a stirring shaft of the motor, and a pressure gauge and a feeding pipe with a valve are respectively arranged at the upper part of the kettle body; a plurality of surrounding drainage plates are arranged on a bottom plate of the kettle body, a discharge port is formed in the middle of the bottom plate, and a cavity in the kettle body is provided with a fully-covered enamel inner surface; a side discharging pipe is arranged on one side of the valve pipe, a plugging plate arranged at the upper end of a lifting rod corresponds to the discharging port, a lower sealing column outer edge rubber ring arranged on the outer edge of the middle of the lifting rod corresponds to the lower portion of the side discharging pipe, and the lower portion of the lifting rod penetrates into an inner hole of an upward pushing screw pipe. The outer edge of the push-up screw tube is in threaded connection with a reducing inner screw tube at the lower end of a reducing tube at the lower end of the valve tube; a handle is sleeved on the outer edge of the lower part of the push-up screw tube; solution stirring is more sufficient through the drainage plate, and the service life is greatly prolonged through the enamel inner face.

Description

Technical Field

[0001] The present disclosure relates to a stirred tank, and in particular to a stirred tank for preparing an organic phosphoric acid extractant SN272. Background Art

[0002] Organic phosphoric acid extractant SN272, also known as di(2,4,4-trimethylpentyl)phosphinic acid, is a relatively mature extractant for cobalt-nickel extraction. It uses hypophosphorous acid, isobutylene, glacial acetic acid and tert-butyl peroxide catalyst as raw materials, and uses a stirred kettle to react → water washing → alkali washing → water washing twice → acidification → water washing three times → and then distills through a distillation kettle to obtain di(2,4,4-trimethylpentyl)phosphinic acid. The commonly used stirred kettle is to respectively set a motor, a pressure gauge and a pipe with a valve on the upper part of the kettle body of the stirred kettle, and set a discharge pipe at the lower part of the kettle body of the stirred kettle. During the stirring reaction, the raw material mixed solution rotates in a vortex along the bottom of the kettle body. During the rotation process, the raw material mixed solution cannot be fully and evenly stirred in a boiling manner, which takes a long time, and it is easy to have accumulated liquid that cannot be stirred between the inlet of the discharge pipe and the valve. Utility Model Content

[0003] The purpose of the present invention is to disclose a stirring kettle for preparing an organic phosphoric acid extractant SN272 based on the deficiencies of the prior art. The present invention provides a plurality of drainage plates on the bottom plate, which can achieve more complete stirring and more stable solution separation. The cavity of the kettle body is provided with a fully covered enamel inner surface, which greatly increases the service life.

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

[0005] A stirring kettle for preparing an organic phosphoric acid extractant SN272, comprising a kettle body, a motor, a pressure gauge, a valve, a guide plate and a lower valve body, wherein the motor is arranged at the middle of the upper end of the kettle body, a stirrer is arranged at the lower end of a stirring shaft of the motor deep into the kettle body, a pressure gauge and a feeding pipe with a valve are arranged at the upper part of the kettle body respectively; a plurality of surrounding guide plates are arranged on the bottom plate in the cavity of the kettle body, a discharge port is arranged on the bottom plate in the middle of the plurality of guide plates, and a fully covered The enamel inner surface; the lower surface of the discharge port bottom plate is fixedly connected to the upper end of the valve tube of the lower valve body, a side discharge pipe is provided on one side of the middle part of the valve tube, a sealing plate arranged at the upper end of the lifting rod corresponds to the discharge port, a lower sealing column is arranged at the outer edge of the middle part of the lifting rod, and the rubber ring at the outer edge of the lower sealing column corresponds to the lower part of the side discharge pipe, and the lower part of the lifting rod is passed through the inner hole of the push-up screw tube, the outer edge of the push-up screw tube is threadedly connected with the reduced diameter inner screw tube at the lower end of the reducer at the lower end of the valve tube, and a handle is sleeved on the outer six sides of the outer edge of the lower part of the push-up screw tube.

[0006] The stirring kettle for preparing the organic phosphoric acid extractant SN272 is provided with a connecting flange B on the upper part of the kettle body, and a connecting flange A is provided on the lower part of the upper cover. The connecting flange A on the lower part of the upper cover is buckled on the connecting flange B, and the connecting flange B is connected to the connecting flange A by multiple locking screws and nuts. A sealing ring is provided between the connecting flange B and the connecting flange A; the motor is arranged in the middle of the upper end of the upper cover, and the pressure gauge and the feed pipe with a valve are respectively arranged on both sides of the motor of the upper cover.

[0007] The stirring kettle for preparing the organic phosphoric acid extractant SN272 is provided with lifting handles on both sides of the upper cover.

[0008] The stirring kettle for preparing the organic phosphoric acid extractant SN272 is provided with a window tube on one side of the middle part of the kettle body, and a glass observation window is provided at the outer end of the window tube.

[0009] The stirring kettle for preparing the organic phosphoric acid extractant SN272 is provided with supporting legs around the lower end of the kettle body.

[0010] The stirring kettle for preparing the organic phosphoric acid extractant SN272 is provided with a sunken mounting plate in the middle of the lower surface of the bottom plate, and the upper end of the valve pipe is fixedly connected to the lower outer edge of the discharge port in the middle of the sunken mounting plate.

[0011] The stirring kettle for preparing the organic phosphoric acid extractant SN272 has a lower surface of the bottom plate which is flat except for the sunken mounting plate in the middle, and the plane of the lower surface of the bottom plate forms the mounting position of the heating plate.

[0012] The stirring kettle for preparing the organic phosphoric acid extractant SN272 is provided with a pull ring at the lower end of the lifting rod.

[0013] The stirring kettle for preparing the organic phosphoric acid extractant SN272 is provided with a rubber plate on the upper surface of the sealing plate, and a conical surface with an integral structure with the sealing plate is provided on the upper part of the rubber plate.

[0014] The stirring kettle for preparing the organic phosphoric acid extractant SN272 is provided with a plurality of exhaust holes on the plate body between the lower end of the reducer and the upper end of the reduced diameter inner spiral tube.

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

[0016] The stirring kettle for preparing the organic phosphoric acid extractant SN272 disclosed in the present invention has a plurality of fan-shaped drainage plates arranged on the bottom plate, so that the mixed solution formed by hypophosphorous acid, isobutylene, glacial acetic acid and tert-butyl peroxide catalyst can be stirred more fully and save time. In particular, after the lower valve body of the present invention is modified, no accumulated liquid that cannot participate in stirring will be formed in the original discharge pipe inlet. The inner cavity of the kettle body of the present invention is provided with a fully covered enamel inner surface, and the service life is greatly increased by the enamel inner surface; the present invention can effectively shorten the stirring reaction time. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 is a schematic diagram of the three-dimensional structure of the upper cover disclosed in the present invention;

[0019] Figure 3 It is a schematic diagram of the lower structure of the kettle body disclosed in the present invention;

[0020] Figure 4 is a schematic diagram of the assembly structure of the lower valve body disclosed in the present invention;

[0021] Figure 5 is a schematic diagram of the three-dimensional structure of the base plate disclosed in the present invention;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the kettle body disclosed in the present invention;

[0023] In the figure: 1. Motor; 2. Pressure gauge; 3. Valve; 4. Feed pipe; 5. Upper cover; 6. Connection flange A; 7. Locking screw; 8. Connection flange B; 9. Lifting handle; 10. Window tube; 11. Kettle body; 12. Side discharge pipe; 13. Valve pipe; 14. Reducer; 15. Handle; 16. Lifting rod; 17. Pull ring; 18. Discharge pipe; 19. Leg; 20. Connection hole; 21. Stirring shaft; 22. Stirrer; 2 3. Drainage plate; 24. Bottom plate; 25. Mounting plate; 26. Sealing plate; 27. Discharge port; 28. Conical surface; 29. ​​Rubber plate; 30. Lower sealing column; 31. Rubber ring; 32. Hole; 33. Expansion plate; 34. Push-up screw tube; 35. External hexagonal surface; 36. Internal hole; 37. Exhaust hole; 38. Reduced diameter internal screw tube; 39. Internal hexagonal hole; 40. Return hook; 41. Sealing ring; 42. Enamel inner surface; 43. Glass observation window. DETAILED DESCRIPTION

[0024] 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.

[0025] Combined with Figures 1 to 6 The stirring kettle for preparing the organic phosphoric acid extractant SN272 described in the invention comprises a kettle body 11, a motor 1, a pressure gauge 2, a valve 3, a guide plate 23 and a lower valve body, wherein the motor 1 is arranged at the middle of the upper end of the kettle body 11, and a stirrer 22 is arranged at the lower end of the stirring shaft 21 of the motor 1 deep into the kettle body 11, and a pressure gauge 2 and a feed pipe 4 with a valve 3 are arranged on the upper part of the kettle body 11, respectively, and a window tube 10 is arranged on one side of the middle part of the kettle body 11, and a glass observation window 43 is arranged at the outer end of the window tube 10; a plurality of fan-shaped guide plates distributed around are arranged on the bottom plate 24 in the cavity of the kettle body 11 23, a hook 40 for tumbling is arranged at the outer end of each guide plate 23, a discharge port 27 is arranged on the bottom plate 24 in the middle of the plurality of guide plates 23, and the cavity in the kettle body 11 is provided with a fully covered enamel inner surface 42; the lower surface of the bottom plate 24 of the discharge port 27 is fixedly connected to the upper end of the valve tube 13 of the lower valve body, a side discharge pipe 12 is arranged on one side of the middle of the valve tube 13, and the side discharge pipe 12 is connected to the external container through the discharge pipe 18, and the plugging plate 26 arranged at the upper end of the lifting rod 16 corresponds to the discharge port 27, and a rubber plate 29 is arranged on the upper surface of the plugging plate 26, and the upper part of the rubber plate 29 is provided with a plugging plate 26 is a conical surface 28 of an integrated structure, a lower sealing column 30 is provided at the outer edge of the middle part of the lifting rod 16, and an upward hollow weight reduction can be provided on the lower end surface of the lower sealing column 30, and an annular groove or multiple annular grooves arranged at intervals are provided on the outer edge of the lower sealing column 30. A rubber ring 31 is sleeved on the annular groove on the outer edge of the lower sealing column 30, and the rubber ring 31 on the outer edge of the lower sealing column 30 corresponds to the lower part of the side discharge pipe 12. The lower part of the lifting rod 16 is passed through the inner hole 36 of the push-up spiral tube 34, and the outer edge of the push-up spiral tube 34 is threadedly connected with the reduced diameter inner spiral tube 38 at the lower end of the reducer tube 14 at the lower end of the valve tube 13, and the push-up spiral tube 34 is threadedly connected with the reduced diameter inner spiral tube 38 at the lower end of the reducer tube 14 at the lower end of the valve tube 13. The enlarged plate 33 disposed at the upper end is pressed against the lower end surface of the lower sealing column 30, a plurality of exhaust holes 37 are disposed on the plate body between the lower end of the reducer 14 and the upper end of the reduced diameter inner spiral tube 38, a handle 15 is sleeved on the outer hexagonal surface 35 of the lower outer edge of the push-up spiral tube 34, that is, the inner hexagonal hole 39 disposed in the middle of the handle 15 is sleeved on the outer hexagonal surface 35 of the lower outer edge of the push-up spiral tube 34, cutting surfaces are disposed on both sides of the lower end of the lifting rod 16, holes 32 are disposed on the two cutting surfaces of the lower end of the lifting rod 16, and the pull ring 17 is inserted into the holes 32; and legs 19 are disposed around the lower end of the kettle body 11.

[0026] Combined with Figure 1 , 2and 6, the upper part of the kettle body 11 is provided with a connecting flange B8, the connecting flange B8, the lower part of the upper cover 5 is provided with a connecting flange A6, the connecting flange A6 at the lower part of the upper cover 5 is buckled on the connecting flange B8, and a plurality of locking screws 7 pass through the connecting holes 20 respectively provided on the connecting flange B8 and the connecting flange A6 and are locked by nuts to form a connection between the connecting flange B8 and the connecting flange A6, a sealing ring 41 is provided between the connecting flange B8 and the connecting flange A6, and the effective sealing ring 41 is embedded in the groove between the inside and outside of the connecting flange B8; the motor 1 is arranged in the middle of the upper end of the upper cover 5, the pressure gauge 2 and the feeding pipe 4 with a valve 3 are respectively arranged on both sides of the motor 1 of the upper cover 5, and lifting handles 9 are respectively provided on both sides of the upper cover 5.

[0027] Combined with Figure 3 , 4 Or 5, a sunken mounting plate 25 is provided in the middle of the lower surface of the bottom plate 24, and the upper end of the valve tube 13 is fixedly connected to the lower outer edge of the discharge port 27 in the middle of the sunken mounting plate 25. The lower surface of the bottom plate 24 is a plane except for the sunken mounting plate 25 in the middle. The plane of the lower surface of the bottom plate 24 forms the installation position of the heating plate. The structure of the heating plate does not belong to the protection scope of the present disclosure, so it is not described in detail in the present disclosure.

[0028] The stirring tank for preparing the organic phosphoric acid extractant SN272 described in the present disclosure is used, combined with the attached Figures 1 to 6 Further explain the production and use of the present invention; the upper cover 5, the kettle body 11, the bottom plate 24 and the legs 19 are made of stainless steel; the upper cover 5 is made according to the attached Figure 1 After the upper cover 5 is processed, a glass containing high silicon dioxide is used to line the lower surface of the upper cover 5, and then the enamel inner surface 42 is formed by high temperature burning; according to the attached Figure 3 Or 6, the drainage plate 23 is welded on the bottom plate 24 of the processed structure, and then the bottom plate 24 is welded to the lower mouth of the kettle body 11, and then the window tube 10 is welded to the reserved mouth on one side of the kettle body 11, and then a glass lining containing high silicon dioxide is used to line the inner surface including the kettle body 11, the bottom plate 24 and the window tube 10, and then an enamel inner surface 42 is formed by high-temperature calcination, and then a glass observation window 43 is installed; the outer surface of the stirring shaft 21 and the stirrer 22 is also increased with an enamel surface in the aforementioned manner; finally, all the components are assembled to form the stirring kettle for preparing the organic phosphoric acid extractant SN272 disclosed in the present invention.

[0029] When in use, hypophosphorous acid, isobutylene, glacial acetic acid and tert-butyl peroxide catalyst are mixed in proportion to form a solution. "The specific weight percentages of hypophosphorous acid, isobutylene, glacial acetic acid and tert-butyl peroxide catalyst disclosed in the present invention do not fall within the scope of protection of the present invention and are therefore not described in detail." First, turn on the vacuum pump and use the feed pipe 4 to form a negative pressure in the kettle body 11, and let the solution enter the kettle body 11 through the feed pipe 4. Turn on the motor 1 to start the reaction under negative pressure. During the reaction process, pay attention to the negative pressure state of the pressure gauge 2 and check it through the glass observation window 43 at regular intervals. If heating is required, the heating disk arranged on the lower surface of the bottom plate 24 is used to heat the kettle body 11 to the temperature required for the reaction, keep it warm and cool it down. During this process, after the motor 1 drives the stirring shaft 21 and the stirrer 22, the solution rotates rapidly along the lower part of the kettle body 11 driven by the stirrer 22, and the guide plate 23 can make the The solution on the bottom plate 24 is lifted up to form a roll, which effectively increases the stirring efficiency. At the same time, the sealing plate 26 of the present invention is pressed against the discharge port 27 of the sunken mounting plate 25, which can ensure that the solution will not be stored inside, resulting in the problem that a small amount of solution cannot be stirred; then the handle 15 is used to make the push-up screw tube 34 pressed against the lower end surface of the lower sealing column 30 move downward, and at this time the lifting rod 16 also moves downward synchronously. If the lifting rod 16 does not move downward smoothly, the pull ring 17 can be pulled down to make the sealing plate 26 and the rubber plate 29 move downward, and further make the solution flow out through the discharge port 27 of the mounting plate 25, and the negative pressure in the kettle body 11 is released. At this time, the solution in the kettle body 11 flows out through the valve tube 13 and the discharge pipe 18, and then goes through the steps of water washing → alkali washing → water washing twice → acidification → water washing three times → finally purification with a distillation kettle to obtain the target di(2,4,4-trimethylpentyl)phosphinic acid.

[0030] 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.

[0031] Parts not described in detail in this disclosure are prior art.

Claims

1. A stirring kettle for preparing an organic phosphoric acid extractant SN272, comprising a kettle body (11), a motor (1), a pressure gauge (2), a valve (3), a guide plate (23) and a lower valve body, wherein: The motor (1) is arranged at the middle of the upper end of the kettle body (11); the lower end of the stirring shaft (21) of the motor (1) extending deep into the kettle body (11) is provided with a stirrer (22); a pressure gauge (2) and a feed pipe (4) with a valve (3) are respectively provided at the upper part of the kettle body (11); a plurality of circumferentially distributed guide plates (23) are provided on the bottom plate (24) in the cavity of the kettle body (11); a discharge port (27) is provided on the bottom plate (24) in the middle of the plurality of guide plates (23); the cavity in the kettle body (11) is provided with a fully covered enamel inner surface (42); the lower surface of the bottom plate (24) of the discharge port (27) is fixedly connected to the valve pipe (13) of the lower valve body. ) at the upper end, a side discharge pipe (12) is provided on one side of the middle part of the valve tube (13), a sealing plate (26) provided at the upper end of the lifting rod (16) corresponds to the discharge port (27), a lower sealing column (30) is provided at the outer edge of the middle part of the lifting rod (16), a rubber ring (31) at the outer edge of the lower sealing column (30) corresponds to the lower part of the side discharge pipe (12), the lower part of the lifting rod (16) is inserted into the inner hole (36) of the upper push screw tube (34), the outer edge of the upper push screw tube (34) is threadedly connected with the reduced diameter inner screw tube (38) at the lower end of the reducer tube (14) at the lower end of the valve tube (13), and a handle (15) is sleeved on the outer hexagonal side (35) of the lower outer edge of the upper push screw tube (34).

2. The stirred tank for preparing the organic phosphoric acid extractant SN272 according to claim 1, characterized in that: The upper part of the kettle body (11) is provided with a connecting flange B (8), and the lower part of the upper cover (5) is provided with a connecting flange A (6). The connecting flange A (6) at the lower part of the upper cover (5) is buckled on the connecting flange B (8), and the connecting flange B (8) and the connecting flange A (6) are connected by a plurality of locking screws (7) and nuts. A sealing ring (41) is provided between the connecting flange B (8) and the connecting flange A (6); the motor (1) is arranged at the middle part of the upper end of the upper cover (5), and the pressure gauge (2) and the feed pipe (4) with a valve (3) are respectively arranged on both sides of the motor (1) of the upper cover (5).

3. The stirred tank for preparing the organic phosphoric acid extractant SN272 according to claim 2, characterized in that: Lifting handles (9) are respectively provided on both sides of the upper cover (5).

4. The stirred tank for preparing the organic phosphoric acid extractant SN272 according to claim 1, characterized in that: A window tube (10) is provided on one side of the middle portion of the kettle body (11), and a glass observation window (43) is provided at an outer end of the window tube (10).

5. The stirred tank for preparing the organic phosphoric acid extractant SN272 according to claim 1, characterized in that: Support legs (19) are arranged around the lower end of the kettle body (11).

6. The stirred tank for preparing the organic phosphoric acid extractant SN272 according to claim 1, characterized in that: A sunken mounting plate (25) is provided in the middle of the lower surface of the bottom plate (24), and the upper end of the valve tube (13) is fixedly connected to the lower outer edge of the discharge port (27) in the middle of the sunken mounting plate (25).

7. The stirred tank for preparing the organic phosphoric acid extractant SN272 according to claim 6, characterized in that: The lower surface of the bottom plate (24) is a plane except for the sunken mounting plate (25) in the middle, and the plane of the lower surface of the bottom plate (24) forms the mounting position of the heating plate.

8. The stirred tank for preparing the organic phosphoric acid extractant SN272 according to claim 1, characterized in that: A pull ring (17) is provided at the lower end of the lifting rod (16).

9. The stirred tank for preparing the organic phosphoric acid extractant SN272 according to claim 1, characterized in that: A rubber plate (29) is provided on the upper surface of the blocking plate (26), and a conical surface (28) having an integral structure with the blocking plate (26) is provided on the upper portion of the rubber plate (29).

10. The stirred tank for preparing the organic phosphoric acid extractant SN272 according to claim 1, characterized in that: A plurality of exhaust holes (37) are provided on the plate body between the lower end of the reducer tube (14) and the upper end of the reduced diameter inner spiral tube (38).

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