CN211612660U

CN211612660U - A agitating unit for producing chloroacetic acid

Info

Publication number: CN211612660U
Application number: CN201921739351.9U
Authority: CN
Inventors: 冯永安
Original assignee: Lincheng Lida Chloroacetic Acid Co ltd
Current assignee: Lincheng Lida Chloroacetic Acid Co ltd
Priority date: 2019-10-17
Filing date: 2019-10-17
Publication date: 2020-10-02
Anticipated expiration: 2029-10-17

Abstract

The utility model relates to a chloroacetic acid production facility technical field especially relates to an agitating unit for producing chloroacetic acid. The device comprises a reaction kettle body, wherein a stirring paddle is arranged in the reaction kettle body, and the upper part of the reaction kettle body is rigidly connected with a rotary connector; one end of the stirring paddle is rigidly connected with the rotary connector; the other end of the rotary connector is connected with a speed reducer, and the speed reducer is connected with a variable frequency motor; the circumferential surface of the rotary connector is connected with an air inlet pipe. The stirring paddle comprises a stirring rod, and a cavity is arranged in the stirring rod; the puddler has set gradually third paddle, second paddle and first paddle from one end to the middle part, and the bottom surface of third paddle is provided with a plurality of gas pockets. The utility model adopts the technical scheme that a plurality of air holes are arranged on the stirring paddle blade to introduce chlorine, and the chlorine can be uniformly distributed in the cross section of the reaction kettle when the stirring paddle rotates; the inclined paddle is adopted to make the liquid reactant flow downwards when rotating, so that the rising chlorine gas is more fully contacted with the liquid reactant.

Description

A agitating unit for producing chloroacetic acid

Technical Field

The utility model relates to a chloroacetic acid production facility technical field especially relates to an agitating unit for producing chloroacetic acid.

Background

Chloroacetic acid is a chemical raw material with wide application, and is generally prepared by putting acetic acid and a catalyst into a reaction kettle and then introducing chlorine for reaction. In the prior chloroacetic acid production, chlorine is introduced from the bottom of a reaction kettle, and a stirring device is arranged in the reaction kettle to ensure that the chlorine is fully contacted with a liquid reactant as much as possible, but because the chlorine is introduced at a single and centralized position, the chlorine cannot uniformly rise in the cross section of the reaction kettle by the stirring device, so that a large amount of chlorine escapes from the liquid reactant without reaction, and the utilization rate of the chlorine is low.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to provide a stirring device for producing chloroacetic acid aiming at the technical defects, wherein a plurality of air holes are arranged on the stirring paddle blade to introduce chlorine, and the chlorine can be uniformly distributed in the cross section of the reaction kettle when the stirring paddle rotates; the inclined paddle is adopted to make the liquid reactant flow downwards when rotating, so that the rising chlorine gas is more fully contacted with the liquid reactant.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a stirring device for producing chloroacetic acid comprises a reaction kettle body, wherein a stirring paddle is arranged in the reaction kettle body, and the upper part of the reaction kettle body is rigidly connected with a rotary connector; one end of the stirring paddle is rigidly connected with the rotary connector; the other end of the rotary connector is connected with a speed reducer, and the speed reducer is connected with a variable frequency motor; the circumferential surface of the rotary connector is connected with an air inlet pipe.

Further optimizing the technical scheme, the rotary connector comprises an outer shell; an air inlet is formed in the circumference of the outer shell; a central shaft is arranged in the outer shell and is coaxial with the outer shell; a circular truncated cone is arranged in the middle of the central shaft; the improved bearing comprises a circular truncated cone and is characterized in that a first sealing ring and a first bearing are sequentially arranged on one side of the circular truncated cone, a second sealing ring and a second bearing are sequentially arranged on the other side of the circular truncated cone, and an end cover is arranged on the other side of the second bearing.

Further optimize this technical scheme, the inside of center pin is provided with the hole, be provided with the several through-hole on the circumference of round platform.

Further optimizing the technical scheme, the stirring paddle comprises a stirring rod, and a cavity is arranged in the stirring rod; the stirring rod is sequentially provided with a third paddle, a second paddle and a first paddle from one end to the middle part, and the third paddle, the second paddle and the first paddle are all provided with four paddles which are uniformly distributed along the circumferential direction; the paddles of the second paddle are located at a position, in the circumferential direction, where the third paddle rotates clockwise by 30 degrees along the axis; the blades of the first blade are located at a position in the circumferential direction at which the third blade rotates 60 ° clockwise along the axis.

Further optimizing the technical scheme, the blades of the third blade, the second blade and the first blade are all in an inclined structure, and the outer ends of the blades and one end connected with the stirring rod form an included angle of 30-40 degrees.

Further optimize this technical scheme, the bottom surface of third paddle is provided with a plurality of gas pockets.

Compared with the prior art, the utility model has the advantages of it is following: 1. the stirring paddle is provided with a plurality of air holes for introducing chlorine, and the chlorine can be uniformly distributed in the cross section of the reaction kettle when the stirring paddle rotates, so that the contact area of the chlorine and a liquid reactant is increased, and the utilization rate of the chlorine is improved; 2. the inclined paddle is adopted, so that the liquid reactant flows downwards during rotation, and the rising chlorine is more fully contacted with the liquid reactant; further improving the utilization rate of the chlorine.

Drawings

FIG. 1 is a schematic structural diagram of a stirring device for producing chloroacetic acid.

Fig. 2 is a schematic structural diagram of a stirring paddle of a stirring device for producing chloroacetic acid.

Fig. 3 is a schematic structural diagram of a rotary connector of a stirring device for producing chloroacetic acid.

Fig. 4 is a schematic structural diagram of a central shaft of a stirring device for producing chloroacetic acid.

In the figure: 1. a reaction kettle body; 2. an air inlet pipe; 3. a speed reducer; 4. a variable frequency motor; 5. a rotary connector; 6. a stirring paddle; 51. an outer housing; 52. a first seal ring; 53. a first bearing; 54. a central shaft; 541. A through hole; 542. a circular truncated cone; 543. an inner bore; 55. an air inlet; 56. a second seal ring; 57. a second bearing; 58. an end cap; 61. a cavity; 62. a stirring rod; 63. a first blade; 64. a second blade; 65. a third blade; 651. and (4) air holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The specific implementation mode is as follows: with reference to fig. 1-4, a stirring device for producing chloroacetic acid comprises a reaction kettle body 1, wherein a stirring paddle 6 is arranged inside the reaction kettle body 1, and a rotary connector 5 is arranged at the upper part of the reaction kettle body 1; one end of the stirring paddle 6 is connected with the rotary connector 5; the other end of the rotary connector 5 is connected with a speed reducer 3, and the speed reducer 3 is connected with a variable frequency motor 4; an air inlet pipe 2 is connected to the circumferential side of the rotary joint 5. The rotary joint 5 comprises an outer housing 51; an air inlet 55 is formed in the circumference of the outer shell 51, and the air inlet 55 is connected with the air inlet pipe 2; a central shaft 54 is arranged inside the outer shell 51, and the central shaft and the outer shell are coaxial; a circular truncated cone 542 is arranged in the middle of the central shaft 54; a first seal ring 52 and a first bearing 53 are sequentially provided on one side of the circular truncated cone 542, a second seal ring 56 and a second bearing 57 are sequentially provided on the other side of the circular truncated cone 542, an end cap 58 is provided on the other side of the second bearing 57, and the center shaft 54 is rotatable in the outer housing 51. An inner hole 543 is formed in the central shaft 54, and a plurality of through holes 541 are formed in the circumference of the circular truncated cone 542.

The stirring paddle 6 comprises a stirring rod 62, and a cavity 61 is arranged inside the stirring rod 62; the stirring rod 62 is sequentially provided with a third paddle 65, a second paddle 64 and a first paddle 63 from one end to the middle, and the three paddles are all provided with four paddles uniformly distributed along the circumferential direction; the paddles of the second paddle 64 are located in a position in the circumferential direction where the third paddle 65 is rotated clockwise by 30 ° along the axis; the paddles of the first paddle 63 are located at a position in the circumferential direction at which the third paddle 65 is rotated 60 ° clockwise along the axis. The blades of the third blade 65, the second blade 64 and the first blade 63 are all inclined structures, the outer ends of the blades form an included angle of 30-40 degrees with one end connected with the stirring rod 62, and when the stirring paddle 6 rotates clockwise, the liquid reactant flows downwards. The third blade 65 has a plurality of air holes 651 in a bottom surface thereof.

When in use, as shown in fig. 1-4, the variable frequency motor 4 is started, the stirring paddle 6 is driven to rotate by the speed reducer 3 and the central shaft 54, and the outer shell 51 and the air inlet pipe 2 are still. Chlorine gas is introduced from the gas inlet pipe 2, enters the inner hole 543 through the gas inlet 55 and the through hole 541, then enters the cavity 61 of the stirring paddle 6, finally emerges from the plurality of gas holes 651 on the bottom surface of the third paddle 65 to enter a liquid reactant, and then chlorine bubbles rise under the action of buoyancy. The first paddle 63 and the second paddle 64 rotate to enable the liquid reactant to flow downwards, fully contact with the ascending chlorine bubbles and slow the ascending speed of the chlorine bubbles, the liquid reactant which reacts by contacting with the chlorine and dissolves part of the chlorine continues to move downwards and touches the bottom of the reaction kettle body 1, then the liquid reactant moves upwards along the circumferential wall of the reaction kettle body 1 and returns to the upper surface of the liquid reactant, and the like is repeated until the production is finished. The first paddle 63 and the second paddle 64 can also function to break up chlorine bubbles to some extent, so that the chlorine gas is more fully contacted with the liquid reactant.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A agitating unit for producing chloroacetic acid which characterized in that: the reaction kettle comprises a reaction kettle body (1), wherein a stirring paddle (6) is arranged in the reaction kettle body (1), and the upper part of the reaction kettle body (1) is rigidly connected with a rotary connector (5); one end of the stirring paddle (6) is rigidly connected with the rotary connector (5); the other end of the rotary connector (5) is connected with a speed reducer (3), and the speed reducer (3) is connected with a variable frequency motor (4); the circumferential surface of the rotary connector (5) is connected with an air inlet pipe (2).

2. A stirring device for producing chloroacetic acid according to claim 1, wherein: the rotary connector (5) comprises an outer shell (51); an air inlet (55) is arranged on the circumference of the outer shell (51); a central shaft (54) is arranged in the outer shell (51), and the central shaft and the outer shell are coaxial; a circular truncated cone (542) is arranged in the middle of the central shaft (54); one side of round platform (542) has set gradually first sealing washer (52) and first bearing (53), the opposite side of round platform (542) has set gradually second sealing washer (56) and second bearing (57), the opposite side of second bearing (57) is provided with end cover (58).

3. A stirring device for producing chloroacetic acid according to claim 2, characterized in that: an inner hole (543) is formed in the central shaft (54), and a plurality of through holes (541) are formed in the circumference of the circular truncated cone (542).

4. A stirring device for producing chloroacetic acid according to claim 1, wherein: the stirring paddle (6) comprises a stirring rod (62), and a cavity (61) is arranged in the stirring rod (62); the stirring rod (62) is sequentially provided with a third paddle (65), a second paddle (64) and a first paddle (63) from one end to the middle, and the third paddle, the second paddle and the first paddle are all provided with four paddles which are uniformly distributed along the circumferential direction; the paddles of the second paddle (64) are located in a position in the circumferential direction of 30 DEG clockwise rotation of the third paddle (65) along the axis; the blades of the first blade (63) are located in a position in the circumferential direction at which the third blade (65) is rotated 60 ° clockwise along the axis.

5. A stirring device for producing chloroacetic acid according to claim 4, characterized in that: the blades of the third blade (65), the second blade (64) and the first blade (63) are all of inclined structures, and the outer ends of the blades form an included angle of 30-40 degrees with one end connected with the stirring rod (62).

6. A stirring device for producing chloroacetic acid according to claim 4 or 5, characterized in that: the bottom surface of the third blade (65) is provided with a plurality of air holes (651).