Raw material impurity removal device for preparing 8-hydroxyquinoline

Abstract

The raw material impurity removal device comprises a working kettle, a rotating motor and a heater are arranged on the lower end face of the working kettle, a rotating shaft is arranged on the rotating motor, one end, far away from the rotating motor, of the rotating shaft penetrates through the working kettle, and the other end, far away from the heater, of the rotating shaft penetrates through the working kettle. A clamping groove is formed in the side wall, away from the rotating motor, of the rotating shaft, a clamping block is slidably connected into the clamping groove, a base plate is fixedly connected to the clamping block, a heating end is arranged on the heater, the end, away from the heater, of the heating end penetrates through the working kettle to be attached to the base plate, and a rotating column is rotationally connected to the base plate; a plurality of stirring rods are fixedly connected to the rotating column, the chassis, the rotating column and the plurality of stirring rods are all made of heat conduction materials, and a top device is arranged on the working kettle. According to the purification and impurity removal device, purification and impurity removal work of pyridine serving as a raw material for preparing 8-hydroxyquinoline can be conveniently completed, impurities can be conveniently treated, and the purification and impurity removal device is very beneficial to use.

Description

Technical Field

[0001] The utility model relates to the technical field of 8-hydroxyquinoline preparation, in particular to a raw material impurity removal device for 8-hydroxyquinoline preparation. Background Art

[0002] 8-Hydroxyquinoline is an organic compound with the chemical formula C9H7NO. It is a white or light yellow crystalline powder. It is insoluble in water and ether, but soluble in ethanol, acetone, chloroform, benzene, and inorganic acids. It is mainly used as an intermediate for medicine, dyes, and pesticides. It can also be used as a complexing agent and extractant for precipitation and separation of metal ions. The main raw materials of 8-hydroxyquinoline are pyridine and potassium permanganate. Pyridine is a common chemical intermediate that can be synthesized through the catalytic reaction of acetoacetate and nitrogen; potassium permanganate is an oxidant that can be prepared by the reaction of potassium chloride and sodium permanganate.

[0003] In the process of preparing raw materials for pyridine, the crude pyridine needs to be purified and impurities removed. Usually, the crude pyridine is vaporized and mixed with air in a molar ratio of 1:50-150, and reacted through an oxidation catalyst at 250-400°C at a gas phase space velocity of 300-1000 h-1. After the reaction, distillation is performed, and the fraction at 115.5°C is collected at normal pressure to obtain pure pyridine. For this purpose, corresponding purification and impurity removal equipment is required.

[0004] However, the operation of the existing device is too complicated. When processing a large amount of crude pyridine, the heating work cannot be completed efficiently due to the accumulation of a large amount of crude pyridine. At the same time, the impurities remaining in the working kettle after impurity removal are not convenient to extract and process, which is very inconvenient to use.

[0005] To this end, this scheme proposes a raw material impurity removal device for preparing 8-hydroxyquinoline to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the problems existing in the prior art and proposes a raw material impurity removal device for preparing 8-hydroxyquinoline.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A raw material impurity removal device for preparing 8-hydroxyquinoline comprises a working kettle, wherein a rotating motor and a heater are arranged on the lower end surface of the working kettle, a rotating shaft is arranged on the rotating motor, an end of the rotating shaft away from the rotating motor passes through the working kettle, a clamping groove is arranged on a side wall of the rotating shaft away from the rotating motor, a clamping block is slidably connected in the clamping groove, a bottom plate is fixedly connected to the clamping block, a heating end is arranged on the heater, an end of the heating end away from the heater passes through the working kettle and is attached to the bottom plate, a rotating column is rotatably connected to the bottom plate, a plurality of stirring rods are fixedly connected to the rotating column, the bottom plate, the rotating column and the plurality of stirring rods are all made of heat-conducting materials, and a top device is arranged on the working kettle.

[0009] Preferably, the top device includes a hanging frame, a top cover is provided on the hanging frame, a connecting cover is provided on the top cover, the connecting cover is slidably connected in the opening of the working kettle, the top cover and the outer wall of the working kettle are connected by a plurality of locks, a ventilation pipe is provided on the top cover, the ventilation pipe is communicated with the top cover, a sliding groove is provided on the upper end surface of the rotating column, a sliding rod is slidably connected in the sliding groove, a connecting frame is fixedly connected to the sliding rod, and the connecting frame is fixedly connected to the inner wall of the top cover.

[0010] Preferably, a sealing coating is provided on the outer wall of the connecting cover.

[0011] Preferably, a plurality of feet symmetrically arranged with respect to each other are provided on the lower end surface of the working kettle, and ends of the plurality of feet away from the working kettle are commonly fixedly connected to a base.

[0012] Preferably, a rotating groove is provided on the upper end surface of the chassis, a rotating block is rotatably connected in the rotating groove, the rotating groove and the rotating block are arranged in a concave-convex matching manner, and the rotating block is fixedly connected to the rotating column.

[0013] Preferably, the sliding groove is square, the sliding rod is also square, and the shape of the sliding rod matches the sliding groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] During use, the utility model uses a heater and a heating end to perform heating work, and then uses a chassis supported by a heat-conducting material, a rotating column and a stirring rod to comprehensively heat the crude pyridine. At the same time, with the help of the rotation of the chassis and the non-rotation of multiple stirring rods, the crude pyridine can be stirred, and then the heating work is better completed. The chassis and other structures can be conveniently taken out after the purification work is completed, which is greatly beneficial for the staff to carry out subsequent treatment of impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic diagram of the three-dimensional structure of a raw material impurity removal device for preparing 8-hydroxyquinoline proposed by the utility model;

[0017] Figure 2 This is a front structural cross-sectional view of a raw material impurity removal device for preparing 8-hydroxyquinoline proposed by the utility model;

[0018] Figure 3 for Figure 2 A magnified view of the structure in the middle;

[0019] Figure 4 The utility model provides a partial top view of the structure of a raw material impurity removal device for preparing 8-hydroxyquinoline.

[0020] In the figure: 1 working kettle, 2 rotating motor, 3 heater, 4 rotating shaft, 5 card slot, 6 card block, 7 bottom plate, 8 heating end, 9 stirring rod, 10 hanging frame, 11 top cover, 12 connecting cover, 13 lock, 14 ventilation pipe, 15 sliding slot, 16 sliding rod, 17 connecting frame, 18 pad foot, 19 base, 20 rotating slot, 21 rotating block, 22 rotating column. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-Figure 4 A raw material impurity removal device for preparing 8-hydroxyquinoline comprises a working kettle 1, a plurality of symmetrically arranged feet 18 are arranged on the lower end surface of the working kettle 1, and a base 19 is fixedly connected to the ends of the plurality of feet 18 away from the working kettle 1, so that the placement of the device is more stable, a rotating motor 2 and a heater 3 are arranged on the lower end surface of the working kettle 1, a rotating shaft 4 is arranged on the rotating motor 2, and the end of the rotating shaft 4 away from the rotating motor 2 passes through the working kettle 1, a card slot 5 is arranged on a side wall of the rotating shaft 4 away from the rotating motor 2, a card block 6 is slidably connected in the card slot 5, a chassis 7 is fixedly connected to the card block 6, and a heating end 8 is arranged on the heater 3, The end of the heating end 8 away from the heater 3 passes through the working kettle 1 and fits the chassis 7. A rotating column 22 is rotatably connected to the chassis 7. A rotating groove 20 is provided on the upper end surface of the chassis 7. A rotating block 21 is rotatably connected in the rotating groove 20. The rotating groove 20 and the rotating block 21 are arranged in a concave-convex matching manner. The rotating block 21 is fixedly connected to the rotating column 22, so that the rotating column 22 can rotate relative to the chassis 7, and then the stirring work is smoothly completed. A plurality of stirring rods 9 are fixedly connected to the rotating column 22. The chassis 7, the rotating column 22 and the plurality of stirring rods 9 are all made of heat-conducting materials, which makes the heat conduction effect better and the raw materials are heated and purified more comprehensively;

[0023] The working kettle 1 is provided with a top device, which includes a suspension frame 10, which is connected to the corresponding top lifting equipment to complete the lifting and hanging work. The suspension frame 10 is provided with a top cover 11, and the top cover 11 is provided with a connecting cover 12, which is slidably connected in the opening of the working kettle 1, and the outer wall of the connecting cover 12 is provided with a sealing coating, which makes the connection between the connecting rod 12 and the working kettle 1 more sealed, and the top cover 11 and the outer wall of the working kettle 1 are connected by a plurality of lock buckles 13, and the top cover 11 is provided with a vent pipe 14, which is mutually connected with the top cover 11. A sliding groove 15 is provided on the upper end surface of the rotating column 22, and a sliding rod 16 is slidably connected in the sliding groove 15. The sliding groove 15 is square, and the sliding rod 16 is also square. The shape of the sliding rod 16 matches the sliding groove 15. The square setting allows the sliding rod 16 to effectively limit the rotating column 22, so that the stirring work is completed smoothly and the heating work is completed better. A connecting frame 17 is fixedly connected to the sliding rod 16, and the connecting frame 17 is fixedly connected to the inner wall of the top cover 11. Such a connection allows the chassis 7 and other structures to be easily disassembled, which makes it convenient for the staff to handle impurities.

[0024] During the use of the utility model, firstly, the crude pyridine as a raw material is placed into the working kettle 1, so that the raw material falls on the bottom plate 7, and then the top cover 11 is controlled to descend by the hanging frame 10, so that the connecting cover 12 is inserted into the opening of the working kettle 1, and then the connection and fixing work of the top cover 11 and the working kettle 1 is completed with the help of the lock buckle 13, and then the sealing work of the device is smoothly completed, so that the subsequent work can be smoothly carried out, and the staff can turn on the rotating motor 2 and the heater 3 at this time, and the heater 3 can heat the bottom plate 7, the rotating column 22 and the stirring rod 9 through the heating end 8, so that the bottom plate 7, the rotating column 22 and the stirring rod 9 made of heat-conducting material can fully heat the material, and at the same time, the rotating motor 2 controls the rotating shaft 4 to rotate, and then The chassis 7 is driven to rotate by the card slot 5 and the card block 6, and the rotating column and the stirring rod 9 cannot rotate due to the restriction of the sliding rod 16 in the sliding slot 15. Therefore, the material on the chassis 7 that rotates with the chassis 7 can rotate relative to the stirring rod 9 and then be stirred, which can further enhance the heating effect of the material. The crude pyridine as the raw material is vaporized by heat and then discharged to the designated equipment through the vent pipe 14 for subsequent work. Impurities remain in the working kettle 1. When the impurity removal work is completed, the staff can open the working kettle 1, and then take the stirring rod 9 and the chassis 7 out of the working kettle 1 through the rotating column 22, and use the chassis 7 to scrape out the impurities adhered to the inner wall of the working kettle 1, which greatly facilitates the staff to carry out subsequent processing of these impurities.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A raw material impurity removal device for preparing 8-hydroxyquinoline, comprising a working kettle (1), characterized in that: A rotating motor (2) and a heater (3) are provided on the lower end surface of the working kettle (1); a rotating shaft (4) is provided on the rotating motor (2); an end of the rotating shaft (4) away from the rotating motor (2) passes through the working kettle (1); a slot (5) is provided on a side wall of the rotating shaft (4) away from the rotating motor (2); a block (6) is slidably connected in the slot (5); a base plate (7) is fixedly connected to the block (6); a heating end (8) is provided on the heater (3); an end of the heating end (8) away from the heater (3) passes through the working kettle (1) and fits the base plate (7); a rotating column (22) is rotatably connected to the base plate (7); a plurality of stirring rods (9) are fixedly connected to the rotating column (22); the base plate (7), the rotating column (22) and the plurality of stirring rods (9) are all made of heat-conducting material; and a top device is provided on the working kettle (1).

2. The raw material impurity removal device for preparing 8-hydroxyquinoline according to claim 1, characterized in that: The top device comprises a suspension frame (10), a top cover (11) is provided on the suspension frame (10), a connecting cover (12) is provided on the top cover (11), the connecting cover (12) is slidably connected in the opening of the working kettle (1), the top cover (11) and the outer wall of the working kettle (1) are connected by a plurality of lock buckles (13), a vent pipe (14) is provided on the top cover (11), the vent pipe (14) and the top cover (11) are mutually connected, a sliding groove (15) is provided on the upper end surface of the rotating column (22), a sliding rod (16) is slidably connected in the sliding groove (15), a connecting frame (17) is fixedly connected to the sliding rod (16), and the connecting frame (17) is fixedly connected to the inner wall of the top cover (11).

3. A raw material impurity removal device for preparing 8-hydroxyquinoline according to claim 2, characterized in that: A sealing coating is provided on the outer wall of the connection cover (12).

4. The raw material impurity removal device for preparing 8-hydroxyquinoline according to claim 1, characterized in that: A plurality of symmetrically arranged feet (18) are provided on the lower end surface of the working kettle (1), and one end of the plurality of feet (18) away from the working kettle (1) is fixedly connected to a base (19).

5. The raw material impurity removal device for preparing 8-hydroxyquinoline according to claim 1, characterized in that: A rotating groove (20) is provided on the upper end surface of the chassis (7), a rotating block (21) is rotatably connected in the rotating groove (20), the rotating groove (20) and the rotating block (21) are arranged in a concave-convex matching manner, and the rotating block (21) is fixedly connected to the rotating column (22).

6. The raw material impurity removal device for preparing 8-hydroxyquinoline according to claim 2, characterized in that: The sliding groove (15) is square in shape, and the sliding rod (16) is also square in shape, and the shape of the sliding rod (16) matches that of the sliding groove (15).

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