阅读说明：本技术 一种离心萃取装置 (Centrifugal extraction device ) 是由 车春玲 刘海峰 于 2021-09-06 设计创作，主要内容包括：本申请提供了一种离心萃取装置,包括壳体、转筒,所述壳体设置于所述转筒外围；所述壳体上设置有轻相进口、重相进口、轻相出口和重相出口,还包括混合传质控制部,所述混合传质控制部设置于所述转筒下方,所述混合传质控制部设置于所述壳体与所述转筒之间；所述混合传质控制部包括可发生形变的弹性变形件,所述弹性变形件水平设置,所述弹性变形件在垂直方向发生往复形变。本申请中混合传质控制部的作用,一方面起到扰流、增加湍流的效果,使得溶剂跟溶液到达混合传质控制部后可以更有效的接触,充分混合,提高混合传质效果,本申请中的离心萃取装置更适用于密度差小、粘度差小的液液分离。(The application provides a centrifugal extraction device, which comprises a shell and a rotary drum, wherein the shell is arranged on the periphery of the rotary drum; the shell is provided with a light phase inlet, a heavy phase inlet, a light phase outlet and a heavy phase outlet, and the device also comprises a mixed mass transfer control part, wherein the mixed mass transfer control part is arranged below the rotary drum and is arranged between the shell and the rotary drum; the mixed mass transfer control part comprises an elastic deformation piece which can deform, the elastic deformation piece is horizontally arranged, and the elastic deformation piece deforms in a reciprocating mode in the vertical direction. The effect of mixing mass transfer control portion in this application plays vortex, increases the effect of torrent on the one hand for the solvent can more effectual contact after reaching mixing mass transfer control portion with solution, and intensive mixing improves and mixes the mass transfer effect, and the centrifugal extraction device in this application more is applicable to the liquid-liquid separation that the density difference is little, the viscosity difference is little.)

1. A centrifugal extraction device comprises a shell and a rotary drum, wherein the shell is arranged on the periphery of the rotary drum; the shell is provided with a light phase inlet, a heavy phase inlet, a light phase outlet and a heavy phase outlet, liquid and an extractant respectively enter from the light phase inlet and the heavy phase inlet, the mixed liquid and the extractant enter the rotary drum and are layered under the action of centrifugal force generated in the rotary drum, and the layered liquid respectively flows out from the light phase outlet and the heavy phase outlet; it is characterized by also comprising:

a mixed mass transfer control part disposed below the drum, the mixed mass transfer control part being disposed between the housing and the drum;

the mixed mass transfer control part comprises an elastic deformation piece which can deform, the elastic deformation piece is horizontally arranged, and the elastic deformation piece deforms in a reciprocating mode in the vertical direction.

2. A centrifugal extraction apparatus as claimed in claim 1, wherein the elastic deformation member is an elastic metal plate or an elastic polymer material.

3. The centrifugal extraction device as claimed in claim 2, wherein the mixed mass transfer control part further comprises a deformation generating structure to assist the elastic deformation member to deform.

4. The centrifugal extraction device according to claim 3, wherein the elastic deformation member is an elastic metal plate, the periphery of the elastic metal plate is connected with the rubber sealing gasket, the deformation generating structure is a piston cylinder, piston rods of the piston cylinders are arranged in parallel, and the piston cylinders are arranged on the periphery of the rubber sealing gasket; under the reciprocating motion of the piston rod, the center of the elastic metal plate can be subjected to reciprocating deformation in the vertical direction.

5. A centrifugal extraction device according to claim 4, wherein the central position of the elastic metal plate is raised upward in the initial state, so that the central position continues to be raised upward when the piston rod presses the elastic metal plate inward.

6. The centrifugal extraction device according to claim 3, wherein the elastic deformation member is made of an elastic polymer material, and the periphery of the elastic deformation member is clamped in the housing;

deformation takes place the structure set up in the below of elastic deformation spare, deformation takes place the structure and includes cam and montant, montant one end and cam butt, the montant other end and elastic deformation spare butt.

7. The centrifugal extraction device as claimed in claim 6, wherein the deformation generating structure comprises a transmission rod, a cam and a vertical rod, the cam is sleeved on the transmission rod, one end of the vertical rod is abutted with the cam, and the other end of the vertical rod is abutted with the elastic deformation member.

8. The centrifugal extraction device as claimed in claim 7, further comprising the vertical rod fixing member, wherein the vertical rod fixing member comprises a sleeve, and the vertical rod is sleeved in the sleeve.

9. The centrifugal extraction apparatus of claim 1, further comprising a baffle plate centrally disposed within the bowl.

10. A centrifugal extraction method using the centrifugal extraction apparatus according to any one of claims 1 to 9, comprising the steps of:

s1, the rotary drum starts to rotate, liquid and extractant enter from the light phase inlet and the heavy phase inlet respectively and are mixed in the space between the inner wall of the shell and the outer wall of the rotary drum,

s2, the elastic deformation piece generates reciprocating deformation motion in the vertical direction, a certain turbulent flow effect is formed in the deformation process, the mixed mass transfer effect of the liquid and the extracting agent is improved,

and S3, forming a centrifugal force field in the rotating cylinder, so that the mixed liquid and the extractant enter the inner wall of the rotating cylinder from the lower part of the rotating cylinder, and are layered under the action of the centrifugal force field, and the layered liquid respectively flows out from the light phase outlet and the heavy phase outlet.

Technical Field

The application relates to the technical field of fuel oil desulfurization, in particular to a centrifugal extraction device.

Background

The centrifugal extractor is a novel, rapid and efficient liquid-liquid extraction separation device, is widely applied in the field of petrochemical industry, and is essentially different from the traditional extraction devices such as a mixer-settler, an extraction tower and the like in the working principle.

The existing centrifugal extractor generates a required strong centrifugal force field by driving a rotary drum to rotate at a high speed, and the multi-phase mixed liquid generates a layering phenomenon due to the fact that the density difference of the multi-phase mixed liquid is large and the centrifugal force is different, so that the purpose of extraction or separation is achieved.

However, for liquid-liquid separation with small density difference and small viscosity difference, the separation effect of the existing centrifugal extraction equipment is not good, on one hand, the separation effect in the centrifugal force field is poor because the mixed mass transfer effect of the liquid and the extractant is poor due to the properties of two liquids needing to be separated.

Disclosure of Invention

In order to solve the technical problem, the application provides a centrifugal extraction device, which comprises a shell and a rotary drum, wherein the shell is arranged on the periphery of the rotary drum; the shell is provided with a light phase inlet, a heavy phase inlet, a light phase outlet and a heavy phase outlet, the liquid and the extractant respectively enter from the light phase inlet and the heavy phase inlet, the mixed liquid and the extractant enter the rotary drum and are layered under the action of centrifugal force generated in the rotary drum, and the layered liquid respectively flows out from the light phase outlet and the heavy phase outlet; further comprising:

a mixed mass transfer control part disposed below the drum, the mixed mass transfer control part being disposed between the housing and the drum;

the mixed mass transfer control part comprises an elastic deformation piece which can deform, the elastic deformation piece is horizontally arranged, and the elastic deformation piece deforms in a reciprocating mode in the vertical direction.

Furthermore, the elastic deformation piece is an elastic metal plate or an elastic polymer material.

Furthermore, the mixed mass transfer control part also comprises a deformation generating structure to assist the elastic deformation piece to deform.

Furthermore, the elastic deformation part is an elastic metal plate, the periphery of the elastic metal plate is connected with the rubber sealing gasket, the deformation generating structure is a piston cylinder, piston rods of the piston cylinder are arranged in parallel, and the piston cylinder is arranged on the periphery of the rubber sealing gasket; under the reciprocating motion of the piston rod, the center of the elastic metal plate can be subjected to reciprocating deformation in the vertical direction.

Furthermore, when the elastic metal plate is in an initial state, the central position protrudes upwards, so that when the piston rod presses the elastic metal plate inwards, the central position continues to protrude upwards.

Furthermore, the elastic deformation piece is made of an elastic high polymer material, and the periphery of the elastic deformation piece is clamped in the shell; deformation takes place the structure set up in the below of elastic deformation spare, deformation takes place the structure and includes cam and montant, montant one end and cam butt, the montant other end and elastic deformation spare butt.

Furthermore, the deformation generating structure comprises a transmission rod, a cam and a vertical rod, wherein the plurality of cams are sleeved on the transmission rod, one end of the vertical rod is abutted against the cam, and the other end of the vertical rod is abutted against the elastic deformation piece.

Furthermore, the shape of the adjacent cams is different, so that the deformation motion of the elastic deformation piece generated by the adjacent vertical rods is not consistent.

Further, still include the montant mounting, the montant mounting includes the sleeve, the montant cover is located in the sleeve.

Furthermore, the rotary drum also comprises a flow baffle plate which is arranged at the center in the rotary drum.

The invention also provides a centrifugal extraction method using the centrifugal extraction device, which comprises the following steps:

s1, the rotary drum starts to rotate, liquid and extractant enter from the light phase inlet and the heavy phase inlet respectively and are mixed in the space between the inner wall of the shell and the outer wall of the rotary drum,

s2, the elastic deformation piece generates reciprocating deformation motion in the vertical direction, a certain turbulent flow effect is formed in the deformation process, the mixed mass transfer effect of the liquid and the extracting agent is improved,

and S3, forming a centrifugal force field in the rotating cylinder, so that the mixed liquid and the extractant enter the inner wall of the rotating cylinder from the lower part of the rotating cylinder, and are layered under the action of the centrifugal force field, and the layered liquid respectively flows out from the light phase outlet and the heavy phase outlet.

The beneficial effect of this application is as follows:

1. the effect of the mixed mass transfer control part in the application has the effects of disturbing flow and increasing turbulence on one hand, so that the solvent and the solution can be contacted more effectively after reaching the mixed mass transfer control part, the solvent and the solution are fully mixed, and the mixed mass transfer effect is improved;

2. the mixed mass transfer control part can be matched with the rotary drum on the other hand, and can play a role of a micropump due to the reciprocating deformation of the elastic deformation piece in the vertical direction under the rotary drum, so that the elastic deformation piece is matched with a centrifugal force field in the rotary drum, and the solution can be quickly sucked into the rotary drum to complete the separation process;

3. the elastic deformation piece and the deformation generating structure are matched with each other, so that the deformation process of the elastic deformation piece is controllable, and the deformation process can be changed at any time according to different solution separation processes;

4. according to the method, the elastic metal plate is selected and the center position of the elastic metal plate is upwards protruded, so that on one hand, the deformation direction of the center position of the elastic metal plate is controlled to be consistent all the time when the elastic metal plate is deformed, the center position is controlled to be in an upwards protruded state all the time; on the other hand, the state ensures that the elastic metal plate can keep providing auxiliary force for pushing the liquid upwards into the rotary drum, thereby being beneficial to the liquid to quickly finish the separation process;

5. the elastic polymer material has the advantages that the elastic variable has a wider variation range, the deformation process is more flexible and controllable, and the elastic polymer material is suitable for separating different liquids and has a wider application range;

6. the deformation generating structure has the advantages that the cam is selected, the deformation process can be completed by utilizing the shape of the cam, the structure is simple, and the deformation process can be adjusted by changing different cams;

7. the plurality of cam structures are arranged on one transmission rod, so that the turbulent flow effect of the elastic deformation piece on the liquid is effectively improved, and the mixed mass transfer process of the liquid and the extracting agent is further improved; on the other hand, through setting up different cam structures, can further increase the vortex process of liquid.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic diagram of a centrifugal extractor of the present application;

FIG. 2 is a schematic diagram of the structure of a hybrid mass transfer control section of the present application;

FIG. 3 is a schematic view of another state of use of the mixed mass transfer control section of FIG. 2;

FIG. 4 is a schematic diagram of another hybrid mass transfer control section of the present application;

FIG. 5 is a schematic diagram of the structure of yet another hybrid mass transfer control section of the present application;

FIG. 6 is a schematic view of another state of use of the mixed mass transfer control section of FIG. 5;

FIG. 7 is a schematic diagram of another centrifugal extractor apparatus of the present application.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1, the centrifugal extraction apparatus in this embodiment includes a housing 1 and a rotating drum 2, wherein the housing 1 is disposed at the periphery of the rotating drum 2; the shell 1 is provided with a light phase inlet 11, a heavy phase inlet 12, a light phase outlet 13 and a heavy phase outlet 14, liquid and an extracting agent respectively enter from the light phase inlet 11 and the heavy phase inlet 12, the mixed liquid and the extracting agent enter the rotary drum 2 and are layered under the action of centrifugal force generated in the rotary drum 2, and the layered liquid respectively flows out from the light phase outlet 13 and the heavy phase outlet 14;

the mixing mass transfer control part 3 is arranged below the rotary drum 2, and the mixing mass transfer control part 3 is arranged between the shell 1 and the rotary drum 2; the mixed mass transfer control part 3 comprises an elastic deformation piece 31 which can deform, the elastic deformation piece 31 is horizontally arranged, and the elastic deformation piece 31 deforms in a reciprocating mode in the vertical direction.

It will be appreciated that a deformation-imparting mechanism 4 is also included to assist in deforming the resiliently deformable member 31.

It will be appreciated that a baffle 5 is also included, the baffle 5 being centrally located within the bowl 2.

It will be appreciated that a motor for generating a rotational movement of the drum 2 is arranged above the drum 2.

It will be appreciated that a light phase weir 6 and a heavy phase weir 7 for controlling the outflow of the separated liquid are provided at the light phase outlet 13 and the heavy phase outlet 14, respectively.

It will be appreciated that the bottom end of the bowl 2 is provided with an opening 21 for the mixed liquid to enter the bowl 2, and the light phase inlet 11 and the heavy phase inlet 12 are disposed above the opening 21 so that the liquid and extractant entering the housing 1 begin the mixing process as they fall under the rotation of the bowl 2.

It can be understood that, considering that the process of dropping the light phase inlet 11 and the heavy phase inlet 12 may generate impact force on the elastic deformation member 31, in order to prevent the elastic deformation member 31 from being damaged by too much impact force, and in order to ensure that the elastic deformation process of the elastic deformation member 31 is smoother, that is, not subjected to too much resistance; the flow and the flow speed of the liquid extracting agent and the material of the elastic deformation piece 31 can be controlled, so that the whole process is more efficient and smoother.

The centrifugal extraction method using the centrifugal extraction device of the embodiment comprises the following steps:

s1, the rotary drum 2 starts to rotate, liquid and extractant enter from the light phase inlet 11 and the heavy phase inlet 12 respectively and are mixed in the space between the inner wall of the shell 1 and the outer wall of the rotary drum 2,

s2, the elastic deformation piece 31 generates reciprocating deformation movement in the vertical direction, a certain turbulent flow effect is formed in the deformation process, the mixed mass transfer effect of the liquid and the extracting agent is improved,

s3, because a centrifugal force field is formed in the rotating drum 2, the mixed liquid and the extractant enter the inner wall of the rotating drum 2 from the lower part of the rotating drum 2, and are layered under the action of the centrifugal force field, and the layered liquid respectively flows out from the light phase outlet 13 and the heavy phase outlet 14.

As shown in fig. 2 to fig. 3, in another embodiment, a specific structure of the mixed mass transfer control part 3 is specifically described, in this embodiment, the elastic deformation element 31 is an elastic metal plate 311, the periphery of the elastic metal plate 311 is connected with the rubber packing 8, the outer side of the rubber packing 8 is connected with the housing, the deformation generating structure 4 is a piston cylinder 41, the piston rods of the piston cylinders 41 are arranged in parallel, and the piston cylinder 41 is arranged at the periphery of the rubber packing 8; under the reciprocating motion of the piston rod, the center of the elastic metal plate 311 is deformed in a reciprocating manner in the vertical direction.

It can be understood that, when the elastic metal plate 311 is in the initial state, the central position is protruded upward, so that when the piston rod presses the elastic metal plate 311 inward, the central position continues to be protruded upward.

Due to the arrangement of the rubber gasket 8, when the elastic metal plate 311 is elastically deformed, the elastic metal plate 311 can be ensured to be smoothly deformed and the sealing performance can be ensured due to the elasticity of the rubber material.

The rubber sealing gasket 8 in this embodiment may also be replaced with a sealing sheet made of other polymer materials, and has a main function of ensuring the sealing performance of the periphery when the elastic metal plate 311 deforms, thereby preventing liquid from leaking downward.

When the mixed mass transfer control part 3 of the embodiment is used, the piston cylinder 41 performs telescopic motion in the horizontal direction, and then drives the periphery of the elastic metal plate 311 to extrude towards the center to deform, so that the center position can move in the vertical direction, otherwise, the center position of the elastic metal plate 311 returns to the original state downwards in the vertical direction.

It will be appreciated that the piston cylinder 41 preferably acts on the resilient metal plate 311 in a centrally symmetrical position thereof;

it is understood that the elastic metal plate 311 has a circular shape.

As shown in fig. 4 to 7, in another embodiment, another specific structure of the mixing and mass transfer control section 3 is provided, the elastic deformation member 31 is an elastic polymer material 312, and the elastic deformation member 31 is peripherally inserted into the housing 1; deformation takes place structure 4 and sets up in the below of elastically deformable piece 31, and deformation takes place structure 4 and includes cam 42 and montant 43, and montant 43 one end and cam 42 butt, the montant 43 other end and the butt of elastically deformable piece 31.

More preferably, the deformation generating structure 4 comprises a transmission rod 44, a cam 42 and a vertical rod 43, wherein the plurality of cams 42 are sleeved on the transmission rod 44, one end of the vertical rod 43 is abutted with the cam 42, and the other end of the vertical rod 43 is abutted with the elastic deformation member 31.

It can be understood that, in order to control the range of motion of the vertical rod 43, the vertical rod fixing member 9 is further included, the vertical rod fixing member 9 includes a sleeve 91, and the vertical rod 43 is sleeved in the sleeve 91.

When the mixed mass transfer control part 3 in this embodiment is used, the transmission rod 44 rotates to drive the cam 42 to rotate, so as to drive the vertical rod 43 to move up and down in the vertical direction, and the vertical rod 43 drives the elastic deformation member 31 to deform.

It will be appreciated that the resilient deformable member 31 may be a resilient deformable pad made of a unitary sheet of polymeric material, the periphery of which is clamped by the housing 1 to provide a sealing effect.

It will be appreciated that the vertical bar 43 may be fixedly connected to the elastically deformable member 31.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.