CN114247171A - Supergravity solvent purification equipment - Google Patents

Supergravity solvent purification equipment Download PDF

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Publication number
CN114247171A
CN114247171A CN202210000744.8A CN202210000744A CN114247171A CN 114247171 A CN114247171 A CN 114247171A CN 202210000744 A CN202210000744 A CN 202210000744A CN 114247171 A CN114247171 A CN 114247171A
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CN
China
Prior art keywords
static
liquid
disc
baffling
supergravity
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Pending
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CN202210000744.8A
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Chinese (zh)
Inventor
项文远
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Melaminium
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Melaminium
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Priority to CN202210000744.8A priority Critical patent/CN114247171A/en
Publication of CN114247171A publication Critical patent/CN114247171A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D3/00Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14Fractional distillation or use of a fractionation or rectification column
    • B01D3/30Fractionating columns with movable parts or in which centrifugal movement is caused
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D3/00Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14Fractional distillation or use of a fractionation or rectification column
    • B01D3/32Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30

Abstract

The utility model provides a hypergravity menstruum purification equipment which characterized in that: the inner side wall of the dynamic baffling ring forms first arc-shaped grooves which are densely arranged, and the inner side wall of the static baffling ring forms second arc-shaped grooves which are densely arranged. Through first arc recess and second arc recess, under the prerequisite that does not increase hypergravity menstruum purification equipment whole volume, increased the internal surface area of dynamic baffling circle and static baffling circle by a wide margin to improve mass transfer efficiency, when liquid moves fast between dynamic baffling circle and static baffling circle, the strong fragmentation of taking place, shearing effect are that the mass transfer efficiency that current planar structure produced is more than several times.

Description

Supergravity solvent purification equipment
Technical Field
The invention relates to the technical field of gas-liquid contact equipment, in particular to supergravity solvent purification equipment.
Background
A baffling type hypergravity revolving bed is a novel high-efficiency rectification device, which consists of one or more rotors rotating at high speed, wherein the rotor with a specific structure rotates at high speed in a shell, a gas phase enters the shell from an air inlet and enters the rotor from the outer edge of the rotor, a liquid phase enters the center of the rotor from an liquid inlet, the gas phase and the liquid phase form a gas-liquid interface with large specific surface area and continuous renewal in the rotor, the gas-liquid interface has high mass transfer rate, and finally the gas phase leaves a bed body through an air outlet; the liquid phase is collected in the shell and then is led out from the liquid outlet.
The equipment height of 1.0 m-1.5 m can replace the flow height of a rectifying tower of 10 m-22 m, the mass transfer efficiency is high, the equipment volume is small, the retention time is short, the liquid holdup is small, the anti-blocking capability is strong, the operation and maintenance are convenient, the operation and maintenance are safe and reliable, and the device is widely applied to the recovery of organic solvents such as ethanol, methanol, acetone, ethyl acetate, acetonitrile, tetrahydrofuran, dichloromethane, DMF, DMSO, toluene, isopropanol, tert-butanol and the like and the separation and purification of products.
For example, chinese patent CN1325137C discloses a multilayer baffling type supergravity rotating bed device, but the actual effect is still very bad, and how to further optimize the structure and improve the mass transfer efficiency on this basis is the direction that the skilled person needs to research and improve.
Disclosure of Invention
In order to overcome the defects of the background art, the invention provides a supergravity solvent purification device.
The technical scheme adopted by the invention is as follows: a supergravity solvent purification device comprises a shell, a rotating shaft and a rotor assembly, wherein the upper end of the shell is provided with a gas phase outlet and a liquid phase inlet, and the lower end of the shell is provided with a gas phase inlet and a liquid phase outlet; the rotating shaft is rotatably arranged in the center of the shell and is connected with a power source for driving the rotating shaft to rotate; the rotor component comprises a movable disc and a static disc which are correspondingly arranged, the movable disc is fixedly connected with the rotating shaft, and a plurality of concentrically arranged movable baffling rings are formed on the upper surface of the movable disc; the static disc is fixed in the shell and positioned above the movable disc, a plurality of concentric static deflection rings are formed on the lower surface of the static disc, and the dynamic deflection rings and the static deflection rings are sequentially arranged alternately at intervals to form a zigzag deflection ring channel; the inner side wall of the dynamic deflection ring forms first arc-shaped grooves which are densely arranged, and the dynamic deflection ring is also provided with through holes which are densely arranged; and the inner side wall of the static baffle ring forms second arc-shaped grooves which are densely distributed.
The movable disc and the static disc are both in a conical structure with a low center and a high edge.
The inner ring of the static disc is connected with a liquid distributor, and the outer side wall of the liquid distributor is provided with densely arranged small holes.
And a plurality of lifting pieces which are uniformly distributed in the circumferential direction are arranged at the joint of the inner side of the dynamic baffling ring and the dynamic disc.
The static disc is provided with a jacket heating chamber, and the jacket heating chamber is connected with a heat exchange liquid inlet and a heat exchange liquid outlet.
And a packing ring is arranged on the outer edge of the movable disc.
The rotor assemblies are provided with a plurality of groups and are arranged layer by layer from top to bottom along the rotating shaft; and a middle liquid inlet pipe is formed at the position of the side wall of the shell corresponding to the space between the two adjacent groups of rotor assemblies.
The invention has the beneficial effects that: 1. through the first arc-shaped groove and the second arc-shaped groove, on the premise of not increasing the whole volume of the supergravity solvent purification equipment, the inner surface areas of the dynamic deflection ring and the static deflection ring are greatly increased, so that the mass transfer efficiency is improved, and when liquid rapidly moves between the dynamic deflection ring and the static deflection ring, the strong crushing and shearing effects are more than several times of the mass transfer efficiency generated by the conventional plane structure;
2. the movable disc and the static disc are in a conical structure with a low center and a high edge, according to the physical principle of centrifugal force, liquid always rises on the movable disc under the action of the centrifugal force, the structure of the movable disc can better adapt to the flow of the liquid, so that the power of the rotating shaft is reduced to a certain extent, and meanwhile, the liquid can flow to the center position along the upper surface of the static disc more quickly on the static disc;
3. the lifting piece is arranged at the joint of the inner side of the dynamic baffling ring and the dynamic disc, and liquid can quickly rise along the lifting piece in the rotating process of the dynamic disc, so that the liquid is prevented from stopping at the joint (dead angle) of the dynamic baffling ring and the dynamic disc, the liquid holdup at the dead angle is reduced, and the shaft power of the rotating shaft is directly reduced;
4. a jacket heating chamber is formed on the static disc, so that the function of heat exchange is further increased,
5. the outer edge of the movable disc is provided with the packing ring, liquid can enter the packing ring through the baffling ring channel to continue mass transfer, and the liquid and the packing ring are combined to obtain better mass transfer efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a supergravity solvent purification device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a rotor assembly according to an embodiment of the present invention.
Fig. 3 is a schematic view of the structure in the direction a in fig. 2.
Fig. 4 is a schematic view of the structure in the direction B in fig. 2.
Fig. 5 is a schematic view of the structure in the direction C in fig. 2.
Detailed Description
The embodiments of the invention will be further described with reference to the accompanying drawings in which:
as shown in the figure, the supergravity solvent purification equipment comprises a shell 1, a rotating shaft 2 and a rotor assembly.
The upper end of the shell 1 is provided with a gas phase outlet 11 and a liquid phase inlet 12, the lower end of the shell is provided with a gas phase inlet 13 and a liquid phase outlet 14, and the side wall of the shell 1 is provided with a plurality of middle liquid inlet pipes 15 at even intervals from top to bottom.
The pivot 2 rotatably sets up in casing 1 center, and with casing 1 seal fit, 2 lower extremes of pivot are connected with the power supply, can order about pivot 2 fast revolution.
The rotor subassembly is equipped with 3 groups to from last layer upon layer arrangement down along pivot 2, of course, the quantity of rotor subassembly also can be 1 group, 2 groups or other quantity, and the rotor subassembly of different quantity can be directed against different menstruum and different concentration, reaches required menstruum purification purpose. And the middle liquid inlet pipe 15 on the side wall of the shell 1 is correspondingly arranged between the two adjacent groups of rotor assemblies, and liquid supplement is realized through the middle liquid inlet pipe.
Wherein, every group rotor subassembly all includes driving disk 3 and the quiet dish 4 that corresponds the setting.
The movable disc 3 is fixedly connected with the rotating shaft 2 and can synchronously rotate at a high speed along with the rotating shaft 2, the movable disc 3 is of a conical structure with a low center and a high edge, the upper surface of the movable disc is vertically connected with a plurality of circles of movable baffling rings 31 which are concentrically arranged, the inner side walls of the movable baffling rings 31 form first arc-shaped grooves 311 which are densely arranged, the first arc-shaped grooves 311 are preferably hemispheric, and through holes 312 which are densely arranged are formed in the movable baffling rings 31.
With the high-speed rotation of the movable disc 3, the liquid on the movable disc 3 can be thrown away from the center, and the liquid on the inner surface of the movable baffle ring 31 can generate the acceleration of supergravity, so that the liquid can move upwards along the movable baffle ring 31.
Furthermore, the junction of the inner side of the dynamic baffling ring 31 and the dynamic disk 3 is provided with a plurality of lifting pieces 32 which are uniformly distributed in the circumferential direction, the lifting pieces 32 are used for preventing liquid from stopping at the junction (dead angle) of the dynamic baffling ring 31 and the dynamic disk 3, the liquid at the junction of the dynamic baffling ring 31 and the dynamic disk 3 can quickly rise along the lifting pieces, and the axial power of a rotating shaft is directly reduced while the liquid holdup at the dead angle is reduced.
Quiet dish 4 is fixed in casing 1 to be located the top of driving disk 3, quiet dish 4 is the center height equally, the high toper structure in edge, is parallel with driving disk 3, quiet 4 lower surfaces of dish are connected with a plurality of rings of concentric quiet baffling circle 41 that set up perpendicularly, the inside wall of quiet baffling circle 41 forms the second arc recess 411 of intensive arrangement, second arc recess 411 is preferably the hemisphere equally.
Furthermore, a jacket heating chamber 42 is formed on the static disc 4, the jacket heating chamber 42 is connected with a heat exchange liquid inlet 421 and a heat exchange liquid outlet 422, the heating purpose can be realized, and the heating medium can be residual liquid from a reboiler as a heat source, so that the purpose of energy conservation is achieved.
The dynamic deflection rings 31 and the static deflection rings 41 are alternately arranged at intervals in sequence to form zigzag S-shaped deflection ring channels 5.
In addition, the inner ring of the static disc 4 is also connected with a liquid distributor 6, the outer side wall of the liquid distributor 6 is provided with small holes 61 which are densely arranged, and the outer edge of the movable disc 3 is also provided with a packing ring 7.
The working principle of the supergravity solvent purification equipment is as follows:
the gas enters the shell 1 from the gas phase inlet 13, flows from the outer edge to the center in a zigzag manner through the baffle ring channel 5 between the packing ring 7, the dynamic baffle ring 31 and the static baffle ring 41 under the action of pressure difference, then flows out from the middle liquid distributor 6 upwards, rises layer by layer, finally leaves from the gas phase outlet 11 and enters the next process.
Liquid enters from the liquid phase inlet 12 and the middle liquid inlet pipe 15 and flows in a path opposite to that of gas, and in the flowing process of the gas and the liquid, under the influence of high-speed rotating motion of the movable disc 3, the liquid can be firstly contacted with the gas in the baffle ring channel 5 between the movable baffle ring 31 and the static baffle ring 41 to finish a mass transfer process, the liquid after being sheared can continue to move towards the outer edge through strong crushing and shearing generated by the mass transfer, and then leaves and flows out downwards after continuing the mass transfer through the packing ring 7, so that the liquid descends layer by layer, and finally flows out from the liquid phase outlet 14.
The specific process is as follows:
after entering the shell 1, the liquid will flow along the upper plane of the static disc 4 towards the center, because of the heating and heat transfer function of the jacket heating chamber 42, part of the solvent with lower boiling point in the liquid will be vaporized into steam and will rise away, the rest of the liquid will enter the liquid distributor 6 and will be sprayed to the inner surface of the dynamic baffle ring 31 from the small holes 61 on the outer side wall of the liquid distributor 6.
Under the influence of the high-speed rotation of the movable disc 3, the liquid generates supergravity acceleration on the inner surface of the movable baffle ring 31, so that the liquid can move upwards along the movable baffle ring 31, the liquid surface is continuously renewed, and the rising liquid can be thrown away from the center of the upper end of the movable baffle ring 31 or the through hole 312 and is shot to the static baffle ring 41.
When liquid is thrown away from the center, the liquid contacts with gas in a cross flow manner, the liquid thrown onto the static deflection ring 41 moves downwards under the action of gravity, the gas rotates upwards under the influence of high-speed rotation movement of the movable disc 3, the liquid rotates downwards under the action of gas drive and gravity, and the liquid contacts with the gas in a counter flow manner, so that the liquid can fully contact with the gas, and the mass transfer process is completed.
In the process that liquid passes through the through hole 312 and impacts the static baffling ring 41, a large amount of fine liquid filaments can be formed, the liquid on the inner side surface of the static baffling ring 41 and the liquid thrown out continuously collide, extrude and shear, so that the surface is updated very fast, the liquid is broken strongly and sheared to form the fine liquid filaments, in the process, gas-liquid contact is very sufficient, substances with low boiling points are vaporized into steam and rise away, substances with high boiling points in the steam are condensed, and the condensate flows out along with the liquid, so that in a baffling ring channel 5 between the dynamic baffling ring 31 and the static baffling ring 41, an efficient mass transfer process can be completed between the liquid and the gas, and the high mass transfer rate is achieved.
After passing through the baffle ring channel 5, the liquid continues to move towards the outer edge, continues to be extruded and sheared in the packing ring 7, and leaves after mass transfer.
Adopt above-mentioned hypergravity menstruum purification equipment, its advantage lies in:
1. the inner side wall of the dynamic deflection ring 31 forms first arc-shaped grooves 311 which are densely arranged, the inner side wall of the static deflection ring 41 forms second arc-shaped grooves 411 which are densely arranged, and the inner surface areas of the dynamic deflection ring 31 and the static deflection ring 41 are greatly increased through the first arc-shaped grooves 311 and the second arc-shaped grooves 411 on the premise of not increasing the whole volume of the supergravity solvent purification equipment, so that the mass transfer efficiency is improved, and when liquid rapidly moves between the dynamic deflection ring 31 and the static deflection ring 41, the generated strong crushing and shearing effects are more than several times of the mass transfer efficiency generated by the existing plane structure;
2. the movable disc 3 and the static disc 4 are in a conical structure with a low center and a high edge, according to the physical principle of centrifugal force, liquid always rises on the movable disc 3 under the action of centrifugal force, the structure of the movable disc 3 can better adapt to the flow of the liquid, so that the power of a rotating shaft is reduced to a certain extent, and meanwhile, the liquid can flow to the center position along the upper surface of the static disc 4 more quickly on the static disc 4;
3. a lifting piece 32 is arranged at the joint of the inner side of the dynamic baffling ring 31 and the dynamic disc 3, and liquid can quickly rise along the lifting piece in the rotation process of the dynamic disc 3, so that the liquid is prevented from stopping at the joint (dead angle) of the dynamic baffling ring 31 and the dynamic disc 3, the liquid holdup at the dead angle is reduced, and the shaft power of a rotating shaft is directly reduced;
4. a jacket heating chamber 42 is formed on the static disc 4, the function of heat exchange is further increased,
5. the outer edge of the movable disc is provided with the packing ring, liquid can enter the packing ring through the baffling ring channel 5 to continue mass transfer, and the liquid and the packing ring are combined to obtain better mass transfer efficiency.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The skilled person should understand that: although the invention has been described in terms of the above specific embodiments, the inventive concept is not limited thereto and any modification applying the inventive concept is intended to be included within the scope of the patent claims.

Claims (7)

1. A supergravity solvent purification device comprises a shell (1), a rotating shaft (2) and a rotor assembly, wherein the upper end of the shell (1) is provided with a gas phase outlet (11) and a liquid phase inlet (12), and the lower end of the shell is provided with a gas phase inlet (13) and a liquid phase outlet (14); the rotating shaft (2) is rotatably arranged in the center of the shell (1) and is connected with a power source for driving the rotating shaft to rotate; the rotor component comprises a movable disc (3) and a static disc (4) which are correspondingly arranged, the movable disc (3) is fixedly connected with the rotating shaft (2), and a plurality of movable baffling rings (31) which are concentrically arranged are formed on the upper surface of the movable disc (3); the static disc (4) is fixed in the shell (1) and is positioned above the movable disc (3), a plurality of static baffling rings (41) which are concentrically arranged are formed on the lower surface of the static disc (4), and the dynamic baffling rings (31) and the static baffling rings (41) are sequentially arranged at intervals in an alternating mode to form a zigzag baffling ring channel (5);
the method is characterized in that: the inner side wall of the dynamic baffling ring (31) is provided with first arc-shaped grooves (311) which are densely arranged, and through holes (312) which are densely arranged are also formed on the dynamic baffling ring (31);
the inner side wall of the static baffle ring (41) forms second arc-shaped grooves (411) which are densely arranged.
2. The apparatus for purifying supergravity solvent according to claim 1, wherein: the movable disc (3) and the static disc (4) are both in a conical structure with a low center and a high edge.
3. The apparatus for purifying supergravity solvent according to claim 1, wherein: the inner ring of the static disc (4) is connected with a liquid distributor (6), and the outer side wall of the liquid distributor (6) is provided with densely arranged small holes (61).
4. The apparatus for purifying supergravity solvent according to claim 1, wherein: the joint of the inner side of the dynamic baffling ring (31) and the dynamic disc (3) is provided with a plurality of lifting pieces (32) which are uniformly distributed in the circumferential direction.
5. The apparatus for purifying supergravity solvent according to claim 1, wherein: the static disc (4) is provided with a jacket heating chamber (42), and the jacket heating chamber (42) is connected with a heat exchange liquid inlet (421) and a heat exchange liquid outlet (422).
6. The apparatus for purifying supergravity solvent according to claim 1, wherein: and a packing ring (7) is arranged on the outer edge of the movable disc (3).
7. The apparatus for purifying supergravity solvent according to claim 1, wherein: the rotor assemblies are provided with a plurality of groups and are arranged layer by layer from top to bottom along the rotating shaft (2); and a middle liquid inlet pipe (15) is formed at the position between the side wall of the shell (1) and the two adjacent groups of rotor assemblies.
CN202210000744.8A 2022-01-04 2022-01-04 Supergravity solvent purification equipment Pending CN114247171A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114850794A (en) * 2022-05-11 2022-08-05 浙江镇田机械有限公司 Production process of high-efficiency supergravity centrifugal separator
CN114849266A (en) * 2022-05-07 2022-08-05 浙江镇田机械有限公司 Hypergravity centrifugal separator capable of improving separation efficiency

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CN103143186A (en) * 2013-02-04 2013-06-12 沈宏 Rotary shear flow tray
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114849266A (en) * 2022-05-07 2022-08-05 浙江镇田机械有限公司 Hypergravity centrifugal separator capable of improving separation efficiency
CN114850794A (en) * 2022-05-11 2022-08-05 浙江镇田机械有限公司 Production process of high-efficiency supergravity centrifugal separator

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