CN211836435U - Energy-saving multistage liquid-liquid extraction device - Google Patents
Energy-saving multistage liquid-liquid extraction device Download PDFInfo
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- CN211836435U CN211836435U CN201922197019.0U CN201922197019U CN211836435U CN 211836435 U CN211836435 U CN 211836435U CN 201922197019 U CN201922197019 U CN 201922197019U CN 211836435 U CN211836435 U CN 211836435U
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Abstract
The utility model relates to an energy-saving multistage liquid-liquid extraction device, which comprises a shell, a raw material pump, an extractant pump, a circulating liquid storage tank, an external liquid separator, 5 baffle plates and 2 internal liquid separators, wherein the baffle plates and the internal liquid separators are arranged in the shell; the method of integrating the liquid phase separator in the device realizes multi-stage liquid-liquid extraction in a single device, fully utilizes the flow process of liquid phase fluid under the action of gravity, and saves the energy consumption of a matched device.
Description
Technical Field
The utility model relates to a chemical industry separation technology field especially relates to an energy-conserving multistage liquid-liquid extraction device.
Background
Liquid-liquid extraction, also known as solvent extraction, refers to a method of extracting most of substances by transferring the substances from one solvent to another solvent through the difference in solubility or partition coefficient of the substances in two mutually insoluble (or slightly soluble) solvents, and repeating the extraction for many times.
In the traditional extraction process, in order to achieve the required product purity, a plurality of extraction devices are often required to be connected in series for continuous work so as to meet the product purity index, the design difficulty and equipment investment of the whole process are increased, and meanwhile, the plurality of extraction devices are required to be respectively matched with a liquid phase flow pump, a liquid phase separator and a possibly required heat exchange device, so that the energy consumption is high, and the economic benefit is low.
SUMMERY OF THE UTILITY MODEL
For solving prior art's not enough, the utility model provides an energy-conserving multistage liquid-liquid extraction device, the method through integrating the liquid phase separator in the device realizes the multistage liquid-liquid extraction in single device, and the mobile process of make full use of liquid phase fluid itself under the action of gravity saves the energy resource consumption of supporting device.
In order to achieve the above object, the utility model discloses the technical scheme who adopts includes:
an energy-saving multistage liquid-liquid extraction device comprises a shell, a raw material pump, an extractant pump, a circulating liquid storage tank, an external liquid distributor, 5 baffle plates and 2 internal liquid distributors, wherein the baffle plates and the internal liquid distributors are arranged in the shell;
a raw material feed port and a first extractant feed port are formed in one side of the top of the shell, and a liquid phase outlet is formed in the bottom of the shell and is connected with an external liquid distributor; first to fifth baffle plates are horizontally staggered, vertically and equidistantly arranged in the shell in sequence, wherein the liquid phase opening of the first baffle plate closest to the top of the shell is arranged on the opposite side of the raw material feed port and the first extractant feed port; the internal liquid distributors are respectively arranged at liquid phase opening positions of the second baffling plate and the fourth baffling plate, and auxiliary extracting agent feed inlets are arranged on the shell corresponding to extraction liquid outlets of the internal liquid distributors;
an extract liquid outlet of the internal liquid separator is arranged in the shell, and the extract liquid flows downwards to the downward baffling plate under the action of gravity; a raffinate outlet of the internal liquid separator extends out of the shell, and raffinate flows out of the shell under the action of gravity;
the outlet of the raw material pump is connected with a raw material feeding hole in the shell through a pipeline;
the extracting agent pump is connected with a first extracting agent feeding port and an auxiliary extracting agent feeding port on the shell through pipelines;
the inlet of the circulating liquid storage tank is connected with the raffinate outlet of the internal liquid separator through a pipeline, and the heights of the inlet of the circulating liquid storage tank and the circulating liquid storage tank are lower than the raffinate outlet of the internal liquid separator; the outlet of the circulating liquid storage tank is connected with a circulating pump;
and an extract outlet of the external liquid separator is connected with a product storage tank, and a raffinate outlet of the external liquid separator is connected with an extractant recovery device.
Further, the housing is cylindrical.
Furthermore, still be provided with the switch valve on the connecting tube between extractant pump and the supplementary extractant feed inlet, the switch valve control extractant is whether to flow into in the casing through supplementary extractant feed inlet.
Further, the internal liquid separator is a liquid separator provided with a production proportion adjusting device, and the production proportion adjusting device adjusts the proportion of the extraction liquid and the raffinate of the internal liquid separator.
Further, the production proportion adjusting device of the internal liquid separator can be set to be full extraction liquid production or full raffinate production.
The utility model has the advantages that:
the energy-saving multi-stage liquid-liquid extraction device of the utility model is adopted to carry out the extraction process of extracting liquid as heavy phase, the gravity action flow of the liquid can be fully utilized, the use of corollary equipment such as a liquid phase pump is reduced, and the energy consumption is reduced; meanwhile, the multi-stage extraction process is integrated in a single device, so that the complexity of process flow design is reduced, the equipment investment is reduced, and better economic benefit can be brought; device design is nimble, can satisfy different user demands, extensive applicability through extractant flow control and interior knockout extraction proportion regulation.
Drawings
FIG. 1 is a schematic view of the energy-saving multi-stage liquid-liquid extraction apparatus of the present invention.
Description of the figure numbering: 1-shell, 11-raw material feed inlet, 12-first extractant feed inlet, 13-liquid phase outlet, 14-auxiliary extractant feed inlet, 21-raw material pump, 22-extractant pump, 23-circulating pump, 3-circulating liquid storage tank, 4-external liquid separator, 41-external liquid separator extract outlet, 42-external liquid separator raffinate outlet, 5-baffle, 6-internal liquid separator, 61-internal liquid separator extract outlet, 62-internal liquid separator raffinate outlet, and 63-extraction proportion regulating device.
Detailed Description
For a clearer understanding of the present invention, reference will be made to the following detailed description of the embodiments with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of an energy-saving multistage liquid-liquid extraction apparatus according to the present invention, which includes a preferably cylindrical casing 1, a raw material pump 21, an extractant pump 22, a circulation pump 23, a circulation liquid storage tank 3, an external liquid separator 4, 5 baffle plates 5 disposed inside the casing 1, and 2 internal liquid separators 6; a raw material feed port 11 and a first extractant feed port 12 are arranged on one side of the top of the shell 1, and a liquid phase outlet 13 connected with an external liquid separator is arranged at the bottom of the shell; the first to fifth baffle plates 5 are sequentially arranged in the shell 1 in a horizontally staggered and vertically equidistant mode, wherein the liquid phase opening of the first baffle plate closest to the top of the shell 1 is arranged on the opposite side of the raw material feed port 11 and the first extractant feed port 12; the internal liquid distributors 6 are respectively arranged at the liquid phase opening positions of the second baffling plate and the fourth baffling plate, and auxiliary extracting agent feed inlets 14 are arranged on the shell 1 corresponding to the extraction liquid outlets 61 of the internal liquid distributors; an extract liquid outlet 61 of the internal liquid distributor 6 is arranged in the shell 1, and the extract liquid flows downwards to the downward baffling plate under the action of gravity; the raffinate outlet 62 of the internal liquid separator 6 extends out of the shell, and the raffinate flows out of the shell 1 under the action of gravity; the internal liquid separator 6 is a liquid separator provided with a production proportion adjusting device 63, and the production proportion adjusting device 63 adjusts the proportion of the extraction liquid and the raffinate of the internal liquid separator and can be set to be full extraction liquid or full raffinate extraction; the outlet of the raw material pump 21 is connected with a raw material inlet 11 on the shell 1 through a pipeline; the extractant pump 22 is connected with the first extractant feed port 12 and the auxiliary extractant feed port 14 on the shell through pipelines; the inlet of the circulating liquid storage tank 3 is connected with an internal liquid separator raffinate outlet 62 through a pipeline, and the heights of the inlet of the circulating liquid storage tank and the circulating liquid storage tank 3 are both lower than the internal liquid separator raffinate outlet 62; the outlet of the circulating liquid storage tank is connected with a circulating pump 23; the extract outlet 41 of the outer liquid separator is connected with a product storage tank, and the raffinate outlet 42 of the outer liquid separator is connected with an extractant recovery device. Further, a switch valve is arranged on a connecting pipeline between the extractant pump 22 and the auxiliary extractant inlet 14, and the switch valve controls whether the extractant flows into the shell 1 through the auxiliary extractant inlet 14 or not.
When the device is used, the extraction process with the extraction liquid as the heavy phase is preferred, raw materials enter the shell 1 from the raw material inlet 11 through the raw material pump 21, meanwhile, the extractant enters the shell 1 from the first extractant inlet 12 through the extractant pump 22, raw material liquid and the extractant are mixed and flow in the shell 1 to the position 6 of the internal liquid separator through the baffle plate 5, the extraction liquid continues to flow downwards in the shell 1 through the extraction liquid outlet 61 of the internal liquid separator, raffinate flows out of the shell 1 through the raffinate outlet 62 of the internal liquid separator and flows into the circulating liquid storage tank 3, meanwhile, the extractant flows into the shell 1 through the auxiliary extractant inlet 14 and is mixed with the extraction liquid of the previous stage to further perform the extraction process, and the extraction liquid flows out of the shell 1 through the liquid phase outlet 13 to enter the external liquid separator 4 through the bottom of the shell 1, and finally, a product.
The above description is only for the preferred embodiment of the present invention, but the protection 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 also within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. An energy-saving multistage liquid-liquid extraction device is characterized by comprising a shell, a raw material pump, an extractant pump, a circulating liquid storage tank, an external liquid distributor, 5 baffle plates and 2 internal liquid distributors, wherein the baffle plates and the internal liquid distributors are arranged in the shell;
a raw material feed port and a first extractant feed port are formed in one side of the top of the shell, and a liquid phase outlet is formed in the bottom of the shell and is connected with an external liquid distributor; first to fifth baffle plates are horizontally staggered, vertically and equidistantly arranged in the shell in sequence, wherein the liquid phase opening of the first baffle plate closest to the top of the shell is arranged on the opposite side of the raw material feed port and the first extractant feed port; the internal liquid distributors are respectively arranged at liquid phase opening positions of the second baffling plate and the fourth baffling plate, and auxiliary extracting agent feed inlets are arranged on the shell corresponding to extraction liquid outlets of the internal liquid distributors;
an extract liquid outlet of the internal liquid separator is arranged in the shell, and the extract liquid flows downwards to the downward baffling plate under the action of gravity; a raffinate outlet of the internal liquid separator extends out of the shell, and raffinate flows out of the shell under the action of gravity;
the outlet of the raw material pump is connected with a raw material feeding hole in the shell through a pipeline;
the extracting agent pump is connected with a first extracting agent feeding port and an auxiliary extracting agent feeding port on the shell through pipelines;
the inlet of the circulating liquid storage tank is connected with the raffinate outlet of the internal liquid separator through a pipeline, and the heights of the inlet of the circulating liquid storage tank and the circulating liquid storage tank are lower than the raffinate outlet of the internal liquid separator; the outlet of the circulating liquid storage tank is connected with a circulating pump;
an extract liquid outlet of the external liquid separator is connected with a product storage tank, and a raffinate liquid outlet of the external liquid separator is connected with an extractant recovery device.
2. The device of claim 1, wherein the housing is cylindrical.
3. The apparatus of claim 1, wherein a switching valve is further provided on a connection pipe between the extractant pump and the auxiliary extractant inlet, and the switching valve controls whether the extractant flows into the housing through the auxiliary extractant inlet.
4. The apparatus of claim 1, wherein the internal liquid separator is a liquid separator provided with a production ratio adjusting device that adjusts the ratio of internal liquid separator extract to raffinate.
5. The apparatus according to claim 4, wherein the apparatus for adjusting the production ratio of the internal liquid separator is configured to produce a total extract or a total raffinate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922197019.0U CN211836435U (en) | 2019-12-10 | 2019-12-10 | Energy-saving multistage liquid-liquid extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922197019.0U CN211836435U (en) | 2019-12-10 | 2019-12-10 | Energy-saving multistage liquid-liquid extraction device |
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| Publication Number | Publication Date |
|---|---|
| CN211836435U true CN211836435U (en) | 2020-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922197019.0U Active CN211836435U (en) | 2019-12-10 | 2019-12-10 | Energy-saving multistage liquid-liquid extraction device |
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| Country | Link |
|---|---|
| CN (1) | CN211836435U (en) |
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- 2019-12-10 CN CN201922197019.0U patent/CN211836435U/en active Active
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