Enhanced gas-liquid mixing device of pipeline reactor for chlorine cobalt removal production

Abstract

The utility model relates to the technical field of hydrometallurgical equipment, in particular to an enhanced gas-liquid mixing device of a pipeline reactor for chlorine cobalt removal production, and aims to solve the problems that in the current nickel electrolysis chlorine cobalt removal operation, scaling is easily generated in a pipeline in the laminar liquid turbulence conversion process by a static mixer, and the production cost is low. And finally, production equipment is abnormal in operation, the purification efficiency is reduced, and the production purification requirement cannot be met. The device mainly comprises a motor, a stirring blade, a four-way joint, a pipeline inlet, a pipeline outlet and the like, the stirring motor and the stirring blade are additionally arranged at a straight pipe of the pipeline reactor and are matched with a stirring blade via hole to rotate, permeate and stir a gas-liquid mixed medium, and meanwhile, mechanical sealing is used for ensuring the sealing performance of a pipeline; according to the gas-liquid reaction device, the energy consumption of the stirring blades for stirring the gas-liquid mixed medium is effectively reduced, so that the gas-liquid medium is refined into gas or liquid particles with smaller particle sizes, the contact area of the gas or liquid particles is increased, scaling in a reaction pipeline is avoided, and the gas-liquid reaction efficiency is obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrometallurgical equipment, in particular to an enhanced gas-liquid mixing device of a pipeline reactor for chlorine gas cobalt removal production. Background Art

[0002] The Venturi mixer is a mechanical device based on the Venturi effect and is often used in gas-liquid reactions. In particular, in the electrolytic nickel production process, the Venturi mixer is used for the introduction and reaction of chlorine. In order to increase the reaction time of chlorine and the nickel solution to be purified, a longer reaction pipeline is required. However, as the pipeline is extended, the fluid gradually transforms from turbulent flow to laminar flow. Therefore, in the production process, when a static mixer is used to transform the laminar liquid into turbulent flow, as the equipment continues to operate, scaling is very likely to occur inside the pipeline and the equipment, resulting in abnormal operation of the equipment and reduced overall purification efficiency, which cannot meet the production purification requirements. In view of this, it is urgent to develop a gas-liquid enhanced mixing reaction device suitable for pipelines. Utility Model Content

[0003] The utility model provides a gas-liquid mixing device for strengthening the pipeline reactor used for chlorine gas cobalt removal production, so as to solve the problems existing in the above background.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A gas-liquid mixing device for strengthening the pipeline reactor for chlorine gas decobalt production comprises a first straight pipe, the first straight pipe is horizontally connected to one side of a connecting four-way, the other side of the connecting four-way is connected to a second straight pipe, a variable frequency motor is fixed vertically on the top of the connecting four-way, a rotating shaft of the variable frequency motor is connected to a stirring blade, and the stirring blade is extended into the cavity of the connecting four-way.

[0006] Furthermore, a slip-on flange is connected to a side of the first straight pipe away from the connecting cross, and the slip-on flange and the first straight pipe constitute a pipeline inlet.

[0007] Furthermore, a side of the second straight pipe away from the connecting cross is also connected to a slip-on flange, and the slip-on flange and the second straight pipe constitute a pipeline outlet.

[0008] Furthermore, a third straight pipe is vertically connected to the top of the connecting cross, and a mechanical seal is provided between the third straight pipe and the variable frequency motor.

[0009] Furthermore, the rotating shaft of the variable frequency motor is connected to a stirring rod, and the stirring blade is connected to the bottom of the stirring rod.

[0010] Furthermore, a fourth straight pipe is connected to the bottom of the connecting cross, and the fourth straight pipe and the slip-on flange constitute an inspection port.

[0011] Furthermore, the stirring blade is provided with a plurality of through holes.

[0012] The utility model has the following beneficial effects:

[0013] The utility model provides an enhanced gas-liquid mixing device for a pipeline reactor for chlorine gas decobalt production, which is mainly composed of a motor, a stirring blade, a connecting cross and a pipeline inlet and outlet and other components. A stirring motor and a stirring blade are added to the straight pipe of the pipeline reactor, and the stirring blade through-holes are matched to rotate and stir the gas-liquid mixed medium. At the same time, a mechanical seal is used to ensure the sealing in the pipeline, thereby effectively reducing the energy consumption of the stirring blade for stirring the gas-liquid mixed medium, and then refining the gas-liquid medium into gas or liquid particles with smaller particle size, increasing the contact area between the two, avoiding the generation of scaling in the reaction pipeline, and significantly improving the gas-liquid reaction efficiency. The utility model solves the problem that in the current electrolytic nickel chlorine decobalt operation, scaling is easily generated in the pipeline due to the turbulent conversion process of the laminar liquid by the static mixer, which ultimately causes abnormal operation of the production equipment and reduced purification efficiency, and cannot meet the production purification requirements.

[0014] In the utility model, the stirring rod is made of solid titanium material, and a semicircular titanium mesh or a porous titanium plate is selected as a stirring blade. The outer side of the stirring blade is made of titanium plates to form a cross frame for fixing the titanium mesh or the porous titanium plate. While strengthening the structural strength of the stirring blade, the stirring blade of the semicircular titanium mesh or the porous titanium plate refines the gas-liquid medium into gas or liquid particles with smaller particle size, increases the contact area between the two, and significantly improves the gas-liquid reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] The meanings of the reference numerals are as follows:

[0017] 1. Frequency conversion motor; 2. Mechanical seal; 3. Stirring rod; 4. Stirring blade; 5. Through hole; 6. Connecting cross; 7. Pipe inlet; 8. Pipe outlet; 9. Inspection port; 10. First straight pipe; 11. Second straight pipe; 12. Third straight pipe; 13. Fourth straight pipe; 14. Slip-on flange. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] like Figure 1As shown, an enhanced gas-liquid mixing device for a pipeline reactor for chlorine gas decobalt production includes a first straight pipe 10, the first straight pipe 10 is horizontally connected to one side of a connecting four-way 6, the other side of the connecting four-way 6 is connected to a second straight pipe 11, a variable frequency motor 1 is fixed vertically on the top of the connecting four-way 6, the rotating shaft of the variable frequency motor 1 is connected to a stirring blade 4, and the stirring blade 4 is extended into the cavity of the connecting four-way 6.

[0020] A slip-on flange 14 is connected to a side of the first straight pipe 10 away from the connecting spool 6 , and the slip-on flange 14 and the first straight pipe 10 form a pipeline inlet 7 .

[0021] A slip-on flange 14 is also connected to the side of the second straight pipe 11 away from the connecting cross 6 , and the slip-on flange 14 and the second straight pipe 11 constitute a pipeline outlet 8 .

[0022] A third straight pipe 12 is vertically connected to the top of the connecting spool 6 , and a mechanical seal 2 is provided between the third straight pipe 12 and the variable frequency motor 1 .

[0023] The rotating shaft of the variable frequency motor 1 is connected to a stirring rod 3 , and the stirring blade 4 is connected to the bottom of the stirring rod 3 .

[0024] A fourth straight pipe 13 is connected to the bottom of the connecting spool 6 , and the fourth straight pipe 13 and the slip-on flange 14 form an inspection port 9 .

[0025] The stirring blade 4 is also provided with a plurality of through holes 5 .

[0026] Furthermore, the stirring blade 4 and the fluid flow direction may form an angle of 110°-145°, thereby reducing the impact force of the fluid on the stirring blade 4, ensuring the stability of the gas-liquid reaction and reducing energy consumption.

[0027] When the utility model is used in a specific application, the stirring structure of the mixing device: the stirring blade 4 is processed from a metal titanium plate with a thickness of more than 10 mm. In order to increase the structural strength of the porous stirring blade 4, the peripheral annular area of ​​the titanium plate is not processed, and small holes with a diameter of 8 mm are opened at the internal position of the stirring blade 4. The center spacing of the holes in the same row is 16 mm, and the spacing between two adjacent rows of holes is 13.9 mm, that is, 6 small holes are evenly distributed around a single small hole. The stirring blade 4 is directly fixedly connected to the central stirring rod 3 by welding. At the same time, in order to increase the mechanical strength of the stirring, adjacent stirring blades 4 are connected and fixed by titanium rods. During specific operation, the mixing device relies on the external force generated by the variable frequency motor 1 to refine, cut and mix the liquid and gas flowing in the pipeline, realize the secondary reaction of the gas-containing liquid, and thus improve the gas-liquid mixing efficiency. The external force is directly driven by the variable frequency motor 1 to rotate the stirring rod 3 and the stirring blade 4. The stirring four-leaf semicircular porous stirring blade 4 generates a reverse cutting force on one side of the liquid flow direction and a forward cutting force on the other side. The force balance between the two generates less resistance to the rotation of the variable frequency motor 1. In addition, due to the high-speed rotation of the variable frequency motor 1, the linear velocity of the stirring blade 4 is greater than the flow rate of the liquid, thereby generating eddy currents for the liquid in the pipeline, which not only indirectly increases the pipeline pressure of the gas-liquid mixture and improves the dissolution and reaction of the gas in the liquid, but also the liquid is cut by the porous stirring blade 4, so that the granulation of the gas-liquid mixture is significantly enhanced, thereby increasing the contact area between the two, and then increasing the gas-liquid reaction rate. Therefore, the device has good practicality.

Claims

1. An enhanced gas-liquid mixing device for a pipeline reactor for chlorine gas decobalt production, characterized in that: The invention comprises a first straight tube (10), the first straight tube (10) being horizontally connected to one side of a connecting spool (6), the other side of the connecting spool (6) being connected to a second straight tube (11), a variable frequency motor (1) being fixedly and vertically arranged on the top of the connecting spool (6), a rotating shaft of the variable frequency motor (1) being connected to a stirring blade (4), and the stirring blade (4) being arranged to extend into the cavity of the connecting spool (6).

2. The enhanced gas-liquid mixing device of a pipeline reactor for chlorine gas decobalt production according to claim 1, characterized in that: A slip-on flange (14) is connected to the side of the first straight pipe (10) away from the connecting cross (6), and the slip-on flange (14) and the first straight pipe (10) form a pipeline inlet (7).

3. The enhanced gas-liquid mixing device of a pipeline reactor for chlorine gas decobalt production according to claim 1, characterized in that: A slip-on flange (14) is also connected to the side of the second straight pipe (11) away from the connecting cross (6), and the slip-on flange (14) and the second straight pipe (11) form a pipeline outlet (8).

4. The enhanced gas-liquid mixing device of a pipeline reactor for chlorine gas decobalt production according to claim 3, characterized in that: A third straight pipe (12) is vertically connected to the top of the connecting cross-piece (6), and a mechanical seal (2) is provided between the third straight pipe (12) and the variable frequency motor (1).

5. The enhanced gas-liquid mixing device of a pipeline reactor for chlorine gas decobalt production according to claim 4, characterized in that: The rotating shaft of the variable frequency motor (1) is connected to a stirring rod (3), and the stirring blade (4) is connected to the bottom of the stirring rod (3).

6. The enhanced gas-liquid mixing device of a pipeline reactor for chlorine gas decobalt production according to claim 3, characterized in that: A fourth straight pipe (13) is connected to the bottom of the connecting cross (6), and the fourth straight pipe (13) and the slip-on flange (14) form an inspection port (9).

7. The enhanced gas-liquid mixing device of a pipeline reactor for chlorine gas decobalt production according to claim 5, characterized in that: The stirring blade (4) is also provided with a plurality of through holes (5).

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