CN111035961A

CN111035961A - Pulse type rotary disc extraction tower

Info

Publication number: CN111035961A
Application number: CN202010054044.8A
Authority: CN
Inventors: 张平亮
Original assignee: Wuxi Professional College of Science and Technology
Current assignee: Wuxi Professional College of Science and Technology
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-04-21

Abstract

The invention provides a pulse type rotating disc extraction tower which is high in mass transfer efficiency, high in processing capacity and good in extraction effect. The device comprises a cylinder body, wherein a rotating shaft is arranged in the cylinder body and is connected with a motor, and a rotating disc is arranged on the rotating shaft; the upper end of the cylinder is provided with a heavy phase feeding spray nozzle and a light phase discharge port, the lower end of the cylinder is provided with a light phase feeding spray nozzle and a heavy phase discharge port, the inner wall of the cylinder is also provided with more than 1 static ring baffle, and the rotary table is positioned between two adjacent static ring baffles; the bottom of the cylinder body is also provided with a pulser.

Description

Pulse type rotary disc extraction tower

Technical Field

The invention relates to the technical field of extraction towers, in particular to a pulse type rotary disc extraction tower.

Background

Liquid-liquid extraction processes are a common unit operation for separating liquid mixtures. It utilizes the different solubility of various components (including target product) in two immiscible liquid phases to achieve the separation purpose. The extraction process has the advantages of high selectivity, good separation effect and the like, the extraction tower has a simpler structure and is more convenient to install, more moderate and uniform stirring can be provided, the interphase contact area is increased, the extraction mass transfer process is strengthened, and the mass transfer efficiency is further enhanced. Is widely applied to the fields of petrochemical industry, atomic energy chemical industry, hydrometallurgy, fermentation, bioengineering production and the like. Such as refining furfural of lubricating oil, deasphalting propane, extracting aromatic hydrocarbon, refining caprolactam, etc. The existing extraction tower has low mass transfer efficiency and processing capacity and can not fully meet the extraction requirement.

Disclosure of Invention

Aiming at the problems, the invention provides the pulse type rotating disc extraction tower which is high in mass transfer efficiency, high in processing capacity and good in extraction effect.

The technical scheme is as follows: a pulse type rotary disc extraction tower comprises a cylinder body, wherein a rotating shaft is arranged in the cylinder body and is connected with a motor, and a rotary disc is arranged on the rotating shaft; the barrel upper end is equipped with heavy phase feeding shower nozzle and light phase discharge gate, the barrel lower extreme is equipped with light phase feeding shower nozzle and heavy phase discharge gate, its characterized in that: more than 1 static ring baffle is further mounted on the inner wall of the cylinder, and the rotary table is located between two adjacent static ring baffles; the bottom of the cylinder body is also provided with a pulser.

It is further characterized in that:

the rotary disc is a sieve plate with corrugated bulges;

the light phase feeding spray head is also provided with a liquid distributor;

the liquid distributor comprises a cyclone disc and an orifice plate;

the inner wall of the cylinder body is also provided with a stabilizer through a bracket;

the inner wall of the cylinder body is also provided with a mounting ring, the mounting ring is connected with a supporting rod, and the supporting rod is connected with the rotating shaft through a bearing;

the bottom of the rotating shaft is provided with a balance disc;

the cylinder body comprises an upper end enclosure, a middle cylinder and a bottom arc cylinder, and the bottom arc cylinder sequentially comprises an oblique cone, a cylinder and a bottom arc piece from top to bottom; the bottom arc cylinder is connected with a skirt, and the pulser is arranged at the bottom of the bottom arc cylinder;

the pulser comprises a shell, wherein one end of the shell is provided with a piston cylinder, a piston rod is arranged in the piston cylinder, the other end of the shell is a pushing port, and a diaphragm is also arranged in the shell;

the top of the cylinder body is also provided with an emptying pipe orifice.

After the structure is adopted, the light phase enters the extraction tower from the lower part of the cylinder body, the heavy phase enters the extraction tower from the upper part of the cylinder body, the cylinder body is separated by the static ring baffles, a turntable is arranged between the two static ring baffles to stir liquid, the interphase contact surface and the turbulence degree of the interphase contact surface can be increased, and meanwhile, the bottom of the tower is provided with the pulser, so that the light phase liquid drop group is forced to flow through the sieve holes, the pulsating liquid flow performs high-speed relative motion between the sieve plates to generate vortex, the liquid drops are promoted to be finely crushed and uniformly distributed, the mass transfer efficiency is higher, the processing capacity is higher.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a pulser;

FIG. 3 is a schematic sectional view taken along line A-A of FIG. 1;

FIG. 4 is a schematic view of an orifice plate;

FIG. 5 is a schematic view of a spinning disk;

fig. 6 is a schematic view of a turntable.

Detailed Description

The pulse type rotary disc extraction tower shown in the figures 1-6 comprises a cylinder body 1, wherein the cylinder body comprises an upper end enclosure 1-1, a middle cylinder 1-2 and a bottom arc cylinder 1-3, the bottom arc cylinder 1-3 is connected with a skirt 1-4, and the bottom arc cylinder 1-3 sequentially comprises an oblique cone 1-31, a cylinder 1-32 and a bottom arc piece 1-33 from top to bottom; a rotating shaft 2 is arranged in the cylinder 1, the rotating shaft 2 is connected with a motor 3, a rotating disc 4 is arranged on the rotating shaft 2, the rotating disc 4 is a sieve plate with corrugated bulges, and sieve pores are arranged on the sieve plate; the upper end of the barrel 1 is provided with a heavy phase feeding spray nozzle 5 and a light phase discharge port 7, the lower end of the barrel is provided with a light phase feeding spray nozzle 6 and a heavy phase discharge port 8, the light phase feeding spray nozzle 6 is also provided with a liquid distributor 9, and the liquid distributor 9 comprises a cyclone disc 9-1 and a pore plate 9-2; the inner wall of the cylinder body 1 is also provided with more than 1 horizontal static ring baffle plate 10, and the rotary table 4 is positioned between two adjacent horizontal static ring baffle plates 10; the bottom of the bottom arc cylinder 1-3 is also provided with a pulser 11, the pulser 11 can adopt common equipment on the market, and can also adopt the following structure, the pulser 11 comprises a shell 11-1, one end of the shell 11-1 is provided with a piston cylinder 11-2, a piston rod 11-3 is arranged in the piston cylinder 11-2, the other end of the shell 11-1 is provided with a pushing port 11-4, a diaphragm 11-5 is also arranged in the shell 11-1, the reciprocating motion of the piston rod 11-3 periodically changes the gas pressure in a pulsation chamber, the pulsation amplitude in a tower can be adjusted, and the top of the cylinder 1 is also provided with an emptying pipe orifice 12 for discharging waste gas.

The inner wall of the cylinder 1 is also provided with a stabilizer through a bracket 13, so that two phases in the tower are in countercurrent contact and stably flow; the inner wall of the cylinder body 1 is also provided with a mounting ring 14, the mounting ring 14 is connected with a support rod 15, and the support rod 15 is connected with the rotating shaft 2 through a bearing and used for supporting the rotating shaft 2; the bottom of the rotating shaft 2 is provided with a balance disk 16.

The light phase (disperse phase) enters from the lower part of the cylinder 1 and is provided with a light phase feeding nozzle 6, the heavy phase enters from the heavy phase feeding nozzle 6 at the upper part of the cylinder 1, the two phases in the tower are in countercurrent contact, the tower is divided into a plurality of intervals by a plurality of horizontal stationary ring baffles 10, a turntable 4 is arranged in each interval to stir liquid, the passing capacity of the tower is not limited due to the undersize of dispersed phase liquid drops, so that the contact surface between the phases and the turbulence degree of the phases are increased, the stationary ring baffles 10 play a role in inhibiting the axial mixing in the tower, the diameter of the turntable 4 is smaller than the inner diameter of the stationary ring baffles 10, the axial force is not generated during rotation, and the flow of the two phases in the vertical direction is still pushed by density difference; meanwhile, a piston type pulser is arranged at the bottom of the tower, and the two phases are difficult to smoothly pass through the sieve pores to realize countercurrent flow due to the gravity difference of the two phases, so the piston type pulser 11 is arranged at the bottom of the bottom arc cylinder 1-3, the piston rod 11-3 is used for pushing the spacer fluid in the piston cylinder 11-2, the spacer fluid acts on the diaphragm 11-5, the reciprocating motion of the piston periodically changes the gas pressure in the pulsation chamber, and the liquid level below the pulsation chamber pulsates along with the pulsation through the transmission of the gas. The gas pressure in the pulsation chamber is adjusted, then the liquid in the tower is pushed by the diaphragm 11-5, and the pulsation amplitude in the tower is adjusted, so that the light liquid and the heavy liquid are subjected to the pulsating liquid flow generated by the pulsation device when passing through the sieve plate and flowing reversely, the liquid in the whole tower is subjected to reciprocating pulsation, dispersed phases are not condensed and layered between the sieve plates, liquid drops are promoted to be finely crushed and uniformly distributed, and finally the light phase discharge port 7 at the right part of the upper end enclosure 1-1 of the tower and the heavy phase discharge port 8 of the bottom arc barrel 1-3 of the tower respectively obtain an extract phase and a raffinate phase.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A pulse type rotary disc extraction tower comprises a cylinder body, wherein a rotating shaft is arranged in the cylinder body and is connected with a motor, and a rotary disc is arranged on the rotating shaft; the barrel upper end is equipped with heavy phase feeding shower nozzle and light phase discharge gate, the barrel lower extreme is equipped with light phase feeding shower nozzle and heavy phase discharge gate, its characterized in that: more than 1 static ring baffle is further mounted on the inner wall of the cylinder, and the rotary table is located between two adjacent static ring baffles; the bottom of the cylinder body is also provided with a pulser.

2. A pulsed rotating disk extraction column as claimed in claim 1, wherein: the rotary disc is a sieve plate with corrugated bulges.

3. A pulsed rotating disk extraction column as claimed in claim 1, wherein: and a liquid distributor is also arranged at the light phase feeding spray head.

4. A pulsed rotating disk extraction column according to claim 3, wherein: the liquid distributor includes a swirl disk and an orifice plate.

5. A pulsed rotating disk extraction column as claimed in claim 1, wherein: and the inner wall of the cylinder body is also provided with a stabilizer through a bracket.

6. A pulsed rotating disk extraction column as claimed in claim 1, wherein: the inner wall of the barrel body is further provided with a mounting ring, the mounting ring is connected with a supporting rod, and the supporting rod is connected with the rotating shaft through a bearing.

7. A pulsed rotating disk extraction column as claimed in claim 1, wherein: and a balance disc is arranged at the bottom of the rotating shaft.

8. A pulsed rotating disk extraction column as claimed in claim 1, wherein: the cylinder body comprises an upper end enclosure, a middle cylinder and a bottom arc cylinder, and the bottom arc cylinder sequentially comprises an oblique cone, a cylinder and a bottom arc piece from top to bottom; the bottom arc cylinder is connected with a skirt, and the pulser is arranged at the bottom of the bottom arc cylinder.

9. A pulsed rotary disk extraction column according to claim 1 or 8, wherein: the pulser comprises a shell, a piston cylinder is arranged at one end of the shell, a piston rod is installed in the piston cylinder, the other end of the shell is a pushing opening, and a diaphragm is further arranged in the shell.

10. A pulsed rotating disk extraction column as claimed in claim 1, wherein: the top of the cylinder body is also provided with an emptying pipe orifice.