CN216755463U

CN216755463U - Microchannel extraction tower

Info

Publication number: CN216755463U
Application number: CN202122813049.7U
Authority: CN
Inventors: 李爱民
Original assignee: Shanghai Sumeng Chemical Technology Co ltd
Current assignee: Shanghai Sumeng Chemical Technology Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-06-17
Anticipated expiration: 2031-11-17

Abstract

The utility model relates to the technical field of chemical equipment, in particular to a microchannel extraction tower. The tower comprises a heavy phase feeder, a light phase clarifier, a tower body, the heavy phase clarifier and the light phase feeder, wherein the bottom of the heavy phase feeder is connected with the top of the light phase clarifier through a flange A, the bottom of the light phase clarifier is connected with the top of the tower body through a flange B, and the bottom of the tower body is connected with the top of the heavy phase clarifier through a flange C. The utility model adopts the design of the micro-channel, in the vertically placed slender tube designed by a plurality of micro-channels, the heavy phase flows from top to bottom, the light phase flows from bottom to top in a counter-current way, and because the diameter of the tube is very small, the liquid shape of the two phases is limited by the diameter size, so that tiny liquid drops or slender strips are formed, thus, the distance of the two phases of mass transfer becomes very tiny, the time for completing the mass transfer becomes very short, the mass transfer speed is greatly accelerated, and the mass transfer efficiency is improved.

Description

Microchannel extraction tower

Technical Field

The utility model relates to the technical field of chemical equipment, in particular to a microchannel extraction tower.

Background

The technology of liquid-liquid extraction by two immiscible liquids with different densities has been developed in the late forties of the last century and has gradually become widely used in petrochemical, chemical engineering, metallurgy, food, traditional Chinese medicine extraction and atomic energy industry due to the production requirements of nuclear fuels. Extraction technology relies on a wide variety of extractors, of which extraction columns are one type. As is well known, the extraction columns commonly used in the industry are mainly divided into two types, one type is a packed extraction column, and the other type is a rotating disc extraction column. The packed extraction tower has no internal stirring device, and the dispersion of the liquid-liquid two phases inside the tower is limited mainly by the cutting effect of the packing. When the dispersed phase is from top to bottom (when the light phase is continuous phase) or from bottom to top (when the heavy phase is continuous phase), the dispersed phase is divided into countless liquid drops by the filler in the process of passing through the filler layer, and the surfaces of the liquid drops form the mass transfer area of the dispersed phase and the continuous phase. Because the continuous phase and the dispersed phase flow in a counter-current manner and are constrained by back mixing of the two phases, the flow velocity cannot be too large and the flow velocity is completely in a laminar flow state, so that the diameter of a droplet of the dispersed phase is larger, the contact area of the two phases is limited, and the mass transfer efficiency is influenced. In addition, when the diameter of the packed tower is larger, local channeling short-circuiting of the dispersed phase can occur, and the phenomenon has a non-negligible influence on the tower efficiency of the packed tower.

And the stirring is arranged in the rotating disc extraction tower, so that dispersed liquid drops are obviously smaller than those in the filler extraction tower under the stirring action of the dispersed phase. The contact area between the dispersed phase and the continuous phase is obviously increased, and the mass transfer effect is obviously improved compared with that of a packed tower. Unfortunately, the column efficiency still has some disadvantages because the agitation zone and the clarification zone of the rotating disk extraction column are in the same zone and are not completely physically separated. These deficiencies are manifested in: firstly, the speed of stirring can not be too fast, if the stirring speed is too fast, the clarification district receives the influence of stirring, and unable clarification layering along with the improvement of stirring speed, the clarification district disappears even at last, and whole tower is in the mixing state completely, has lost the effect of extraction, consequently, because the stirring will control lower speed, the liquid drop that the disperse phase formed under the stirring effect is still great relatively, and two-phase mass transfer area is on the small side, has influenced extraction efficiency. On the other hand, although the stirring speed is not very high, because the mixed mass transfer zone and the clarification phase separation zone are not effectively physically separated, the clarification effect of the clarification phase separation zone is still not slightly influenced under the influence of stirring, the phase separation effect is poor, the two phases are seriously entrained, and the extraction efficiency is also influenced. At present, the most advanced rotating disc tower in the industry needs 3-7 extraction units to complete extraction and separation operation of a theoretical level, that is, the separation efficiency of one extraction unit is only 33.3% at most, and the extraction efficiency of each unit of most extraction towers can only reach about 20%.

Therefore, the existing extraction tower, whether a filler extraction tower or a rotary disc extraction tower, is limited by two-phase mixing effect and phase splitting effect, so that the extraction efficiency of the tower is poor, and the efficiency of chemical production is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a microchannel extraction tower with high extraction efficiency aiming at the problems in the background technology.

The technical scheme of the utility model is as follows:

the micro-channel extraction tower comprises a heavy phase feeder, a light phase clarifier, a tower body, a heavy phase clarifier and a light phase feeder, wherein the bottom of the heavy phase feeder is connected with the top of the light phase clarifier through a flange A, the bottom of the light phase clarifier is connected with the top of the tower body through a flange B, the bottom of the tower body is connected with the top of the heavy phase clarifier through a flange C, the bottom of the heavy phase clarifier is connected with the top of the light phase feeder through a flange D, the bottom of the heavy phase feeder is connected with a heavy phase feeder distribution pipe, a tower body array pipe is arranged inside the tower body, a light phase distribution pipe is arranged at the top of the light phase feeder, the bottom of the heavy phase feeder distribution pipe penetrates through the light phase clarifier to be inserted into the top of the tower body array pipe, the upper end of the heavy phase feeder distribution pipe penetrates through the flange A and keeps flush with the upper surface of the flange A, the top of the light phase feeder distribution pipe penetrates through the heavy phase clarifier and is inserted into the bottom of the column pipe of the tower body, and the lower part of the light phase feeder distribution pipe penetrates through the flange D and is flush with the lower surface of the flange D.

The heavy phase feeder comprises: a heavy phase feeder housing, a heavy phase feeder feed pipe, and a heavy phase feeder distribution pipe; the heavy phase feeder distribution pipe is connected with the heavy phase feeder shell through a flange A.

The light phase clarifier comprises: a light phase clarifier barrel and a light phase clarifier discharge pipe; the discharge pipe of the light phase clarifier penetrates through the barrel of the light phase clarifier and is welded on the outer wall of the barrel of the light phase clarifier, and H is arranged on the discharge pipe of the light phase clarifier.

The body of the tower includes: a tower body cylinder and a tower body array pipe; the tower body cylinder is designed to be a cylinder, and the diameters of the two ends of the tower body tube nest are larger than the diameter of the middle part of the tower body tube nest.

The heavy phase clarifier comprises: a heavy phase clarifier barrel body and a heavy phase clarifier discharge pipe; and the discharge pipe of the heavy phase clarifier penetrates through the barrel body of the heavy phase clarifier and is welded with the outer wall of the barrel body of the heavy phase clarifier.

The light phase feeder comprises: a light phase feeder housing, a light phase feeder feed pipe, and a light phase feeder distribution pipe; the light phase feeder feed pipe is welded at the bottom of the light phase feeder shell, and the light phase feeder distribution pipe is connected with the light phase feeder shell through a flange D.

The number of the heavy phase feeder distribution pipes, the number of the light phase feeder distribution pipes and the number of the tower body array pipes are the same, and the diameters of the heavy phase feeder distribution pipes and the light phase feeder distribution pipes are smaller than the diameters of the tower body array pipes.

The heavy phase feeder shell and the light phase feeder shell are both in bell-type design, and the center lines of the heavy phase feeder feeding pipe, the heavy phase feeder shell, the light phase feeder shell and the light phase feeder feeding pipe are all located on the same axis.

The light phase clarifier barrel, the tower body barrel and the heavy phase clarifier barrel are all designed into cylinders, and the structures of the light phase clarifier and the heavy phase clarifier are the same.

Compared with the prior art, the utility model has the following beneficial technical effects:

the utility model adopts the design of the micro-channel, in the vertically placed slender pipe designed by a plurality of micro-channels, the heavy phase flows from top to bottom, the light phase flows from bottom to top in a counter-current way, and because the diameter of the pipe is very small, the shape of the liquid of the two phases is limited by the size of the diameter, and tiny liquid drops or slender strips are formed, thus, the mass transfer distance of the two phases becomes very tiny, the time for completing the mass transfer becomes very short, the mass transfer speed is greatly accelerated, and the mass transfer efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Reference numerals: 1. a heavy phase feeder; 12. a heavy phase feeder housing; 13. a heavy phase feeder feed pipe; 14. a heavy phase feeder distribution pipe; 2. a light phase clarifier; 22. a light phase clarifier barrel; 24. a discharge pipe of a light phase clarifier; 3. a tower body; 32. a tower body cylinder; 34. column pipes of the tower body; 4. a heavy phase clarifier; 42. a heavy phase clarifier barrel; 44. a heavy phase clarifier discharge pipe; 5. a light phase feeder; 52. a light phase feeder housing; 53. a light phase feeder feed tube; 54. light phase feeder distribution pipes.

Detailed Description

Examples

As shown in fig. 1, the microchannel extraction tower provided by the utility model comprises a heavy phase feeder 1, a light phase clarifier 2, a tower body 3, a heavy phase clarifier 4 and a light phase feeder 5, wherein the bottom of the heavy phase feeder 1 is connected with the top of the light phase clarifier 2 through a flange a, the bottom of the light phase clarifier 2 is connected with the top of the tower body 3 through a flange B, the bottom of the tower body 3 is connected with the top of the heavy phase clarifier 4 through a flange C, the bottom of the heavy phase clarifier 4 is connected with the top of the light phase feeder 5 through a flange D, the bottom of the heavy phase feeder 1 is connected with a heavy phase feeder distribution pipe 14, a tower body tube 34 is arranged inside the tower body 3, a light phase feeder distribution pipe 54 is arranged at the top of the light phase feeder 5, the bottom of the heavy phase feeder distribution pipe 14 is inserted into the top of the tower body tube 34 through the light phase clarifier 2, the upper end of the heavy phase feeder distribution pipe 14 passes through the flange a and is flush with the upper surface of the flange a, the top of the light phase feeder distributing pipe 54 passes through the heavy phase clarifier 4 and is inserted into the bottom of the tower column pipe 34, the lower part of the light phase feeder distributing pipe 54 passes through the flange D and is kept flush with the lower surface of the flange D

The heavy phase feeder 1 comprises: a heavy phase feeder housing 12, a heavy phase feeder feed pipe 13 and a heavy phase feeder distribution pipe 14; the heavy phase feeder feed pipe 13 is welded on top of the heavy phase feeder housing 12, the heavy phase feeder feed pipe 13 is provided with H1, and the heavy phase feeder distribution pipe 14 is connected to the heavy phase feeder housing 12 by a flange a.

The light phase clarifier 2 comprises: a light phase clarifier barrel 22 and a light phase clarifier discharge pipe 24; the light phase clarifier discharging pipe 24 penetrates through the light phase clarifier cylinder 22 and is welded on the outer wall of the light phase clarifier cylinder 22, and H4 is arranged on the light phase clarifier discharging pipe 24.

The tower body 3 includes: a tower barrel 32 and a tower tube 34; the tower body cylinder 32 is designed as a cylinder, and the diameters of the two ends of the tower body tube array 34 are larger than the diameter of the middle part of the tower body tube array 34.

The heavy phase clarifier 4 includes: a heavy phase clarifier barrel 42 and a heavy phase clarifier discharge pipe 44; the heavy phase clarifier discharge pipe 44 passes through the heavy phase clarifier barrel 42 and is welded to the outer wall of the heavy phase clarifier barrel 42.

The light phase feeder 5 includes: a light phase feeder housing 52, a light phase feeder feed pipe 53 and a light phase feeder distribution pipe 54; the light phase feeder feed pipe 53 is welded to the bottom of the light phase feeder housing 52 and the light phase feeder distribution pipe 54 is connected to the light phase feeder housing 52 by a flange D.

The number of the heavy phase feeder distribution pipes 14, the number of the light phase feeder distribution pipes 54 and the number of the column tubes 34 are the same, and the diameter of the heavy phase feeder distribution pipes 14 and the diameter of the light phase feeder distribution pipes 54 are smaller than the diameter of the column tubes 34.

The heavy phase feeder housing 12 and the light phase feeder housing 52 are both bell jar design, and the center lines of the heavy phase feeder feed pipe 13 and the heavy phase feeder housing 12 and the light phase feeder housing 52 and the light phase feeder feed pipe 53 are all located on the same axis.

The light phase clarifier cylinder 22, the tower body cylinder 32 and the heavy phase clarifier cylinder 42 are all designed into cylinders, and the structures of the light phase clarifier 2 and the heavy phase clarifier 4 are the same.

Specifically, the two ends of the tower tube 34 of the utility model are inserted and matched with the heavy phase feeder distribution tube 14 and the light phase feeder distribution tube 54, but the diameter of the two ends of the tower tube 34 is larger than the diameter of the heavy phase feeder distribution tube 14 and the light phase feeder distribution tube 54, when two-phase materials can be transferred into the light phase clarifier 2 and the heavy phase clarifier 4 for clarification, the tower tube 34, the heavy phase feeder distribution tube 14 and the light phase feeder distribution tube 54 are communicated, the tower tube 34, the heavy phase feeder distribution tube 14 and the light phase feeder distribution tube 54 are preferably designed by adopting a micro-channel, the two-phase materials of the heavy phase and the light phase materials flow in a countercurrent manner, and the liquid shape of the two phases is limited by the diameter size due to the small diameter of the pipeline, so that fine liquid drops or slender strips are formed, the two-phase mass transfer distance becomes very small, the completion time becomes very short, the mass transfer speed is greatly accelerated, so that the mass transfer efficiency can be effectively improved; the light phase clarifier 2 and the heavy phase clarifier 4 are mainly used for clarifying light phase materials and heavy phase materials; as shown in the figure, A, B, C and D are both flange components, the flange a, the flange B, the flange C and the flange D all play a role in connection, and the flange a, the flange B, the flange C and the flange D are all provided with the same number of small holes, and each small hole is used for connecting each pipeline; the light phase clarifier cylinder 22, the body cylinder 32, and the heavy phase clarifier cylinder 42 are preferably configured as hollow cylinders, but for other embodiments, the light phase clarifier cylinder 22, the body cylinder 32, and the heavy phase clarifier cylinder 42 may be configured as hollow squares, depending on the implementation.

The working principle is as follows: the heavy phase enters the heavy phase feeder 1 from a heavy phase feed inlet H1 through a heavy phase feeder feed pipe 13, then is dispersed into a plurality of fine streams through a heavy phase feeder distribution pipe 14, enters the tower body tube array 34, flows from top to bottom in the tower body tube array 34 and meets the light phase from the opposite direction, the two phases complete mass transfer in the process of countercurrent flow, finally, the heavy phase flows out from an annular gap between the lower end of the tower body tube array 34 and the upper end of the light phase feeder distribution pipe 54, enters the heavy phase clarifier 4, flows out of the tower through a heavy phase discharge outlet H3 through a heavy phase clarifier discharge pipe 44 after further clarification, and extraction is completed.

The light phase enters a light phase feeder 5 from a light phase feed inlet H2 through a light phase feeder feed pipe 53, then is dispersed into a plurality of fine streams through a light phase feeder distribution pipe 54, enters a tower body tube array 34, flows from bottom to top in the tower body tube array 34 and meets a heavy phase from the opposite direction, the two phases complete mass transfer in the process of countercurrent flow, finally, the light phase flows out from an annular gap between the upper end of the tower body tube array 34 and the lower end of the heavy phase feeder distribution pipe 14, enters a light phase clarifier 2, further clarifies, flows out of the tower through a light phase clarifier discharge pipe 24 through a light phase discharge outlet H4, and extraction is completed.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A micro-channel extraction tower comprises a heavy phase feeder (1), a light phase clarifier (2), a tower body (3), a heavy phase clarifier (4) and a light phase feeder (5), wherein the bottom of the heavy phase feeder (1) is connected with the top of the light phase clarifier (2) through a flange A, the bottom of the light phase clarifier (2) is connected with the top of the tower body (3) through a flange B, the bottom of the tower body (3) is connected with the top of the heavy phase clarifier (4) through a flange C, the bottom of the heavy phase clarifier (4) is connected with the top of the light phase feeder (5) through a flange D, and the micro-channel extraction tower is characterized in that: the bottom of heavy phase feeder (1) is connected with heavy phase feeder distributing pipe (14), the inside of body of the tower (3) is equipped with body of the tower tubulation (34), the top of light phase feeder (5) is equipped with light phase feeder distributing pipe (54), the bottom of heavy phase feeder distributing pipe (14) is passed light phase clarifier (2) and is pegged graft with body of the tower tubulation (34) top, the upper end of heavy phase feeder distributing pipe (14) is passed flange A and is kept flushing with flange A's upper surface, the bottom grafting of heavy phase clarifier (4) and body of the tower tubulation (34) is passed at the top of light phase feeder distributing pipe (54), the lower part of light phase feeder distributing pipe (54) is passed flange D and is kept flushing with the lower surface of flange D.

2. The microchannel extraction column of claim 1, wherein: the heavy phase feeder (1) comprises: a heavy phase feeder housing (12), a heavy phase feeder feed pipe (13) and a heavy phase feeder distribution pipe (14); the heavy phase feeder is characterized in that the feeding pipe (13) of the heavy phase feeder is welded to the top of the shell (12) of the heavy phase feeder, H1 is arranged on the feeding pipe (13) of the heavy phase feeder, and the distribution pipe (14) of the heavy phase feeder is connected with the shell (12) of the heavy phase feeder through a flange A.

3. A microchannel extraction column as set forth in claim 2, wherein: the light phase clarifier (2) comprises: a light phase clarifier cylinder (22) and a light phase clarifier discharge pipe (24); the light phase clarifier discharge pipe (24) penetrates through the light phase clarifier cylinder body (22) and is welded on the outer wall of the light phase clarifier cylinder body (22), and H4 is arranged on the light phase clarifier discharge pipe (24).

4. A microchannel extraction column as set forth in claim 3, wherein: the tower body (3) comprises: a tower body cylinder (32) and a tower body array pipe (34); the tower body cylinder (32) is designed to be a cylinder, and the diameters of the two ends of the tower body tube array (34) are larger than the diameter of the middle part of the tower body tube array (34).

5. The microchannel extraction column of claim 4, wherein: the heavy phase clarifier (4) comprises: a heavy phase clarifier barrel body (42) and a heavy phase clarifier discharge pipe (44); the heavy phase clarifier discharge pipe (44) penetrates through the heavy phase clarifier cylinder body (42) and is welded with the outer wall of the heavy phase clarifier cylinder body (42).

6. A microchannel extraction column as set forth in claim 5, wherein: the light phase feeder (5) comprises: a light phase feeder housing (52), a light phase feeder feed pipe (53) and a light phase feeder distribution pipe (54); the light phase feeder feeding pipe (53) is welded at the bottom of the light phase feeder shell (52), and the light phase feeder distribution pipe (54) is connected with the light phase feeder shell (52) through a flange D.

7. The microchannel extraction column of claim 6, wherein: the number of the heavy phase feeder distributing pipes (14), the number of the light phase feeder distributing pipes (54) and the number of the tower column pipes (34) are the same, and the diameters of the heavy phase feeder distributing pipes (14) and the light phase feeder distributing pipes (54) are smaller than the diameters of the tower column pipes (34).

8. The microchannel extraction column of claim 7, wherein: the heavy phase feeder shell (12) and the light phase feeder shell (52) are both in bell-type design, and the center lines of the heavy phase feeder feeding pipe (13), the heavy phase feeder shell (12), the light phase feeder shell (52) and the light phase feeder feeding pipe (53) are all located on the same axis.

9. The microchannel extraction column of claim 8, wherein: the light phase clarifier cylinder body (22), the tower body cylinder body (32) and the heavy phase clarifier cylinder body (42) are all designed into cylinders, and the structures of the light phase clarifier (2) and the heavy phase clarifier (4) are the same.