CN216629847U - Leaching solvent draining and desolventizing system - Google Patents

Leaching solvent draining and desolventizing system Download PDF

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Publication number
CN216629847U
CN216629847U CN202123216213.2U CN202123216213U CN216629847U CN 216629847 U CN216629847 U CN 216629847U CN 202123216213 U CN202123216213 U CN 202123216213U CN 216629847 U CN216629847 U CN 216629847U
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outlet
draining
inlet
oil
solvent
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管磊
梁椿松
章彤
尹越峰
温小荣
刘明霆
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Myande Group Co Ltd
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Myande Group Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/74Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes

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Abstract

The utility model discloses a leaching solvent draining and desolventizing system, wherein the lower end of a draining oil bucket of a leacher is connected with a collecting pipe, the side wall of the upper part of the draining oil bucket is provided with an oil bucket pumping hole, the oil bucket pumping hole is connected with an air inlet of a condenser, an air outlet of the condenser is connected with an air inlet of a vacuum pump, an air outlet of the vacuum pump is connected with an air inlet of an absorption tower, an air outlet of the absorption tower is communicated with the atmosphere, an outlet at the bottom of the absorption tower is connected with a cold side inlet of a heat exchanger through an oil-rich pump, a cold side outlet of the heat exchanger is connected with a tube pass inlet of a heater, a tube pass outlet of the heater is connected with an inlet of an analytic tower, and the heater is heated by steam; the bottom outlet of the desorption tower is connected with the hot side inlet of the heat exchanger through the lean oil pump, the hot side outlet of the heat exchanger is connected with the hot side inlet of the cooler, and the hot side outlet of the cooler is connected with the upper oil inlet of the absorption tower. The system can greatly shorten the draining time of the fresh solvent, reduce the content of the wet meal, and reduce the desolventizing energy consumption and the load of a condensing system.

Description

Leaching solvent draining and desolventizing system
Technical Field
The utility model relates to a draining oil hopper of an extractor, in particular to a draining desolventizing system of an extraction solvent, belonging to the technical field of extractors.
Background
In the production process of the leaching production line of the oil preparation factory, after materials are leached by the leacher, the materials contain more solvents, and the solvents contained in the materials are reduced by natural draining before being discharged out of the leacher. The natural draining has the following problems:
1. under the action of resistance of a material layer and tension of solvent fluid, the solvent has long time for penetrating the material layer, and a long draining section is needed, so that the whole equipment is long, and the power needed to be configured is large;
2. because of the action of liquid tension, the solvent flows slowly or does not flow among the loose wet meals with small gaps;
3. the two above results in a third result: the wet meal has high solvent content, high desolventizing energy consumption and high steam consumption;
4. the load of the generated waste heat multi-conduction condensing system is high, and if the consumption of cooling water is large, the power consumption is high;
5. the inclination of driping section bottom plate is little, and the solvent flow is little, and the wet dregs of rice powder that leaks down easily silts up, must regularly clear up, and contains and dissolve the material clearance and lead to the solvent loss on the one hand, and on the other hand, the solvent is as inflammable and explosive medium, and misoperation or operational difficulty when clearing up take place the incident occasionally. The cleaning area is large, the cleaning difficulty is increased, and the danger is also increased.
Therefore, the natural draining section is longer, the length of the whole device and the investment of workshop buildings are increased, and a large amount of water vapor is consumed to increase the steam consumption when the subsequent workshop section is desolventized. How to realize the length reduction of the leacher and can also achieve the purposes of reducing the solvent contained in the material, further reducing the consumption of water vapor in the subsequent working section, and has important significance for reducing the energy consumption of enterprises and increasing the economic benefit of the enterprises.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the problems in the prior art and provide a leaching solvent draining and desolventizing system which can greatly shorten the draining time of a fresh solvent, reduce the solvent content of wet meal and reduce the desolventizing energy consumption and the load of a condensing system.
In order to solve the technical problems, the leaching solvent draining and desolventizing system comprises a leaching device shell, wherein a draining oil bucket is arranged below a draining section of the leaching device shell, a grid plate for supporting materials and draining is covered on an upper port of the draining oil bucket, a collecting pipe is connected with a lower port of the draining oil bucket, an oil bucket pumping port is arranged on the side wall of the upper part of the draining oil bucket and is connected with an air inlet of a condenser through a pumping pipeline, an air outlet of the condenser is connected with an air inlet of a vacuum pump, an air outlet of the vacuum pump is connected with an air inlet of the lower part of an absorption tower, an air outlet of the top of the absorption tower is communicated with the atmosphere, an outlet of the bottom of the absorption tower is connected with a cold side inlet of a heat exchanger through an oil-enriched pump, an outlet of the cold side of the heat exchanger is connected with a tube pass inlet of a heater, and an outlet of the tube pass of the heater is connected with an upper inlet of the resolving tower, the shell pass of the heater adopts steam for heating; and the bottom outlet of the desorption tower is connected with the hot side inlet of the heat exchanger through a lean oil pump, the hot side outlet of the heat exchanger is connected with the hot side inlet of the cooler, and the hot side outlet of the cooler is connected with the upper oil inlet of the absorption tower.
As an improvement of the utility model, an air outlet of the condenser is connected with an air inlet of the vacuum pump through a vacuum pump air inlet valve, an air outlet of the vacuum pump is connected with an air inlet at the lower part of the absorption tower through a vacuum pump exhaust valve, and a vacuum pump bypass valve is arranged between an inlet of the vacuum pump air inlet valve and an outlet of the vacuum pump exhaust valve.
As a further improvement of the utility model, a condensate outlet at the bottom of the condenser is connected with a liquid inlet of the water distribution box, a separation clapboard extending upwards is arranged at the middle section of a bottom plate of the water distribution box, a solvent outlet of the water distribution box positioned at the other side of the separation clapboard is connected with an inlet of a solvent reflux pump, and an outlet of the solvent reflux pump is connected with a solvent spray opening in the leacher shell.
As a further improvement of the utility model, a collecting pipe of the draining oil hopper is provided with a slope, two ends of the collecting pipe extend outwards, two ends of the collecting pipe are respectively covered with a detachable sealing blind plate, the lowest part of the collecting pipe is connected with a draining liquid outlet, and the draining liquid outlet is connected with an inlet of an adjacent solvent circulating pump.
As a further improvement of the utility model, three side walls of the draining oil bucket are steep side walls, one side wall is a gentle slope side wall, the air pumping opening of the oil bucket is positioned at the upper part of the steep side wall, the upper edge of the gentle slope side wall is provided with a flushing pipe extending along the full width direction of the gentle slope side wall, a plurality of spraying openings for flushing the inner wall of the upper part of the gentle slope side wall are distributed along the length direction of the flushing pipe, and two ends of the flushing pipe extend out of the draining oil bucket.
As a further improvement of the utility model, the oil extraction opening of the oil bucket is square, the outer port of the oil bucket is connected with the separation chamber, the bottom plate of the separation chamber is in a structure with a high outer part and a low inner part, the top plate of the separation chamber is connected with a vacuum extraction pipe interface, and the front side wall and the rear side wall of the separation chamber are provided with separation chamber sight glasses.
Compared with the prior art, the utility model has the following beneficial effects: 1. the liquid flow rate is improved through forced negative pressure suction, and the draining time of the fresh solvent is greatly shortened, so that the total length of equipment is shortened, and the power configuration is reduced;
2. by utilizing the principle of fluid transfer pressure, the liquid tension is overcome, the maximum draining of the solvent is realized, and the content of the solvent in the wet meal after leaching can be reduced by 5%;
3. after the oil bucket is drained, the content of the solvent in the wet meal is reduced, the steam consumption can be reduced when the desolventizing section is used for desolventizing, and the material steam unit consumption can be reduced by 6-10 kg/ton;
4. through structural optimization, the silt risk of a draining section is reduced, and the safety of the leacher is improved.
Drawings
The utility model will be described in further detail with reference to the following drawings and detailed description, which are provided for reference and illustration purposes only and are not intended to limit the utility model.
FIG. 1 is a flow diagram of a leaching solvent draining and desolventizing system of the present invention;
FIG. 2 is a first perspective view of a drain oil bucket according to the present invention;
FIG. 3 is a second perspective view of the drain oil bucket of the present invention;
FIG. 4 is a front view of the drain oil bucket of the present invention;
FIG. 5 is a top view of FIG. 4 with the louvers hidden;
FIG. 6 is a left side view of FIG. 4;
fig. 7 is a perspective view of fig. 4 with the louvers hidden.
In the figure: 1. an extractor housing; 2. a circulating oil hopper; 3. draining the oil hopper; steep side walls; 3b, a gentle slope side wall; 3c, cone bucket sight glass; 3d, reinforcing ribs; 3e, a grid plate; 3f, a header; 3g, a liquid outlet; 3h, disassembling the sealing blind plate; 3i, an emptying interface; 3j. a separation chamber; 3k, vacuumizing a pipe interface; 3m. separating chamber sight glass; 3n. a flushing pipe; 4. a condenser; 5. a vacuum pump; 6. a water distribution box; 7. an absorption tower; 7a, an exhaust fan; 8. a heat exchanger; 9. a heater; 10. a resolution tower; 11. a cooler; B1. a solvent circulation pump; B2. a solvent reflux pump; B3. an oil-rich pump; B4. a lean oil pump; v1, a vacuum pump air inlet valve; v2, a vacuum pump bypass valve; v3. vacuum pump exhaust valve; G1. circulating a water supply pipe; G2. a circulating water return pipe; G3. a steam pipe; G4. a condensate pipe.
Detailed Description
In the following description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not mean that the apparatus must have a specific orientation.
As shown in fig. 1, the leaching solvent draining and desolventizing system of the present invention includes a leacher housing 1, a circulating oil hopper 2 is respectively arranged below each leaching section, and the oil agent in the circulating oil hopper 2 is pumped out by a solvent circulating pump B1 and returns to the upper side to circularly spray the material layer. The end that the lower floor leached the section is equipped with the driping section, and driping section below is equipped with driping oil fill 3, and the last port of driping oil fill 3 covers has the grid tray 3e that bearing material and driping, and the lower port of driping oil fill 3 is connected with the collection pipe, and the upper portion lateral wall of driping oil fill 3 is equipped with the oil dipper extraction opening, and the oil dipper extraction opening passes through the air inlet that exhaust duct and condenser 4 and links to each other, and the gas outlet of condenser 4 links to each other with the air inlet of vacuum pump 5.
An exhaust port of the vacuum pump 5 is connected with a lower air inlet of the absorption tower 7, a top exhaust port of the absorption tower 7 is connected with an exhaust fan 7a, an outlet of the exhaust fan 7a is communicated with the atmosphere, a bottom outlet of the absorption tower 7 is connected with a cold side inlet of the heat exchanger 8 through an oil-rich pump B3, a cold side outlet of the heat exchanger 8 is connected with a tube pass inlet of the heater 9, a tube pass outlet of the heater 9 is connected with an upper inlet of the desorption tower 10, a shell pass inlet of the heater 9 is connected with a steam pipe G3, and a shell pass outlet of the heater 9 is connected with a condensate pipe G4. The bottom outlet of the desorption tower 10 is connected with the hot side inlet of the heat exchanger 8 through a lean oil pump B4, the hot side outlet of the heat exchanger 8 is connected with the hot side inlet of the cooler 11, and the hot side outlet of the cooler 11 is connected with the upper oil inlet of the absorption tower 7.
The refrigerant water from the circulating water supply pipe G1 enters the cold side of the condenser 4, condenses the gas, and flows out of the circulating water return pipe G2. The condensate outlet at the bottom of the condenser 4 is connected with the liquid inlet of the water distribution box 6, the middle section of the bottom plate of the water distribution box 6 is provided with a separation clapboard extending upwards, the solvent outlet of the water distribution box at the other side of the separation clapboard is connected with the inlet of a solvent reflux pump B2, and the outlet of the solvent reflux pump B2 is connected with the solvent spray opening in the leacher shell 1.
Starting the vacuum pump 5, pumping out the gas in the draining oil hopper 3, providing negative pressure for the draining oil hopper 3, and reducing the content of the solvent in the leached wet meal by 5% after forced draining; the solvent content in the wet meal is reduced, the steam consumption can be reduced when the desolventizing section is used for desolventizing, and the material steam unit consumption can be reduced by 6-10 kg/ton.
The gas pumped by the vacuum pump 5 enters the condenser 4, the gas is firstly condensed, the condensed liquid enters the water distribution box 6, the solvent floats above the moisture and overflows into the other side of the separation clapboard, and the solvent is pumped by the solvent reflux pump B2 to return to the leacher for spraying, thereby realizing recycling. The uncondensed gas enters a vacuum pump 5, is discharged and then enters the lower part of an absorption tower 7, is absorbed by mineral oil flowing downwards at 35 ℃ in the upward flowing process, and the non-condensable gas is extracted and evacuated by an exhaust fan 7 a; mineral oil absorbing solvent steam falls on the bottom of the absorption tower 7 and is pumped out by an oil-rich pump B3, the mineral oil is sent to the cold side of a heat exchanger 8 and is heated to 70 ℃, then enters a tube pass of a heater 9 and is continuously heated to 105 ℃ by steam, then enters the upper part of an analytical tower 10 and flows downwards, the solvent steam is evaporated, is discharged from the top of the analytical tower 10, enters a solvent condensing device for condensation and then returns to a water separation tank 6, the solvent floats above water and overflows to enter the other side of a separation clapboard, and is pumped out by a solvent reflux pump B2 and returns to an extractor for spraying. The 105 ℃ mineral oil falling on the bottom of the desorption tower 10 is pumped by a lean oil pump B4, is sent to the hot side of the heat exchanger 8 to be used as a heat medium, the temperature is reduced to 50 ℃ after heat release, then the mineral oil enters the cooler 11, is cooled to 35 ℃ by water cooling, and enters the upper part of the absorption tower 7 for circular absorption.
An air outlet of the condenser 4 is connected with an air inlet of a vacuum pump 5 through a vacuum pump air inlet valve V1, an air outlet of the vacuum pump 5 is connected with an air inlet at the lower part of the absorption tower 7 through a vacuum pump exhaust valve V3, and a vacuum pump bypass valve V2 is arranged between an inlet of a vacuum pump air inlet valve V1 and an outlet of a vacuum pump exhaust valve V3. If the vacuum pump 5 fails to start, the vacuum pump inlet valve V1 and the vacuum pump exhaust valve V3 can be closed, the vacuum pump bypass valve V2 is opened, the leacher forced draining system can be switched to a natural draining system, and the system is guaranteed not to stop due to the failure of the vacuum pump.
As shown in fig. 2 to 7, the inner cavity of the draining oil bucket 3 is a closed negative pressure cavity, the upper port of the draining oil bucket 3 is covered with a grid plate 3e for supporting materials and draining, the lower port of the draining oil bucket 3 is connected with a collecting pipe 3f with an open top, the collecting pipe 3f is provided with a slope, two ends of the collecting pipe 3f extend outwards, two ports of the collecting pipe 3f are respectively covered with a detachable sealing blind plate 3h, and the lowest part of the collecting pipe 3f is connected with a liquid outlet 3g.
Three-sided lateral wall of draining oil fill 3 is precipitous lateral wall 3a, and one side lateral wall is gentle slope lateral wall 3b, and wherein the upper portion of one-sided precipitous lateral wall 3a is equipped with the negative pressure extraction opening, and the last edge of gentle slope lateral wall 3b is equipped with the flushing pipe 3n that extends along the full width direction of gentle slope lateral wall 3b, and the length direction along flushing pipe 3n distributes and has a plurality of spraying openings that wash the upper portion inner wall of gentle slope lateral wall 3b, and the both ends of flushing pipe 3n stretch out outside draining oil fill 3. The outer wall of the draining oil bucket 3 is provided with a reinforcing rib 3d to improve the strength.
The negative pressure extraction opening is square, the outer port is connected with a separation chamber 3j, the bottom plate of the separation chamber 3j is of a structure with a high outer part and a low inner part, the top plate of the separation chamber 3j is connected with a vacuumizing pipe connector 3k, and the front side wall and the rear side wall of the separation chamber 3j are provided with separation chamber sight glasses 3m. Can set up a reserve extraction opening in the opposite of negative pressure extraction opening, be convenient for choose for use as required according to the condition.
The leaching device draining oil hopper changes a simple gradient plate into a closed negative pressure cavity to form a negative pressure oil hopper; the periphery of the draining oil bucket 3 is closed, the grid plate 3e is arranged at the upper part, liquid and gas pass through narrow slits, and solid powder is prevented from leaking into the cone bucket as much as possible.
Under the negative pressure suction effect of the vacuum pumping pipe connector 3k, gas-phase media enter the separation chamber 3j, a small amount of entrained oil flows back to the oil draining hopper 3 along the bottom plate with the gradient, the separation chamber sight glass 3m is arranged to facilitate observation of the separation condition during vacuum pumping, and the separation chamber sight glass can also be used as a manhole to facilitate cleaning of silt. The draining speed of the fresh solvent is greatly improved and the draining time is shortened by the action of forced negative pressure suction; overcomes the surface tension effect of the solvent, forcibly extracts the solvent in the bulk wet meal with small gaps, and reduces the content of the solvent in the wet meal.
After a small amount of wet dregs of rice powder leaks into the awl fill, be detained at the awl fill lateral wall easily, this device sets up dripdrying oil bucket 3 to trilateral precipitous, the gentle eccentric structure of one side, and the wet dregs of rice powder of being convenient for is in the header pipe 3f along trilateral precipitous lateral wall 3a direct slip under self action of gravity, and trilateral precipitous lateral wall 3a needn't set up washing unit, simplifies the structure. The contradiction is concentrated on the gentle slope side wall 3b, and wet meal powder falling on the gentle slope side wall 3b is difficult to flow downwards automatically due to the gentle slope; circulating oil is sprayed out from each spraying port of the flushing pipe 3n, and in the process that the oil flows downwards, the gentle slope side wall 3b is flushed, and wet meal powder is flushed into the collecting pipe 3f. The collecting pipe 3f is a large pipe with gradient, which guides the collected liquid and powder to the liquid outlet 3g for flowing out, and is provided with a detachable sealing blind plate for cleaning.
The lower part of the detachable blind plate at the lower end of the collecting pipe 3f is connected with a emptying interface 3i, so that residual oil in the oil hopper can be emptied thoroughly when the vehicle is stopped or the variety is changed. The steep side wall 3a of the draining oil bucket 3 is also provided with a cone bucket sight glass 3c, so that the liquid level and the silt condition can be observed conveniently, and the cone bucket sight glass 3c can be removed to clean up when necessary.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.

Claims (6)

1. The utility model provides a leaching solvent drips desolventizing system, includes the leacher casing, the dripdrying section below of leacher casing is equipped with draining oil bucket, its characterized in that: the upper port of the draining oil bucket is covered with a grid plate for supporting materials and draining, the lower port of the draining oil bucket is connected with a collecting pipe, the side wall of the upper part of the draining oil bucket is provided with an oil bucket pumping port, the oil bucket pumping port is connected with an air inlet of a condenser through a pumping pipeline, an air outlet of the condenser is connected with an air inlet of a vacuum pump, an air outlet of the vacuum pump is connected with an air inlet of the lower part of an absorption tower, an air outlet of the top of the absorption tower is communicated with the atmosphere, an outlet of the bottom of the absorption tower is connected with a cold side inlet of a heat exchanger through an oil-rich pump, a cold side outlet of the heat exchanger is connected with a tube pass inlet of a heater, a tube pass outlet of the heater is connected with an upper part inlet of an analytical tower, and a shell pass of the heater is heated by steam; and the bottom outlet of the desorption tower is connected with the hot side inlet of the heat exchanger through a lean oil pump, the hot side outlet of the heat exchanger is connected with the hot side inlet of the cooler, and the hot side outlet of the cooler is connected with the upper oil inlet of the absorption tower.
2. The leaching solvent draining desolventizing system of claim 1, wherein: the air outlet of the condenser is connected with the air inlet of the vacuum pump through a vacuum pump air inlet valve, the exhaust port of the vacuum pump is connected with the lower air inlet of the absorption tower through a vacuum pump exhaust valve, and a vacuum pump bypass valve is arranged between the inlet of the vacuum pump air inlet valve and the outlet of the vacuum pump exhaust valve.
3. The leaching solvent draining desolventizing system of claim 1, wherein: the condensate outlet of the bottom of the condenser is connected with the liquid inlet of the water distribution box, the middle section of the bottom plate of the water distribution box is provided with a separation baffle plate extending upwards, the solvent outlet of the water distribution box positioned on the other side of the separation baffle plate is connected with the inlet of the solvent reflux pump, and the outlet of the solvent reflux pump is connected with the solvent spraying port in the leacher shell.
4. The leaching solvent draining desolventizing system of claim 1, wherein: the collection pipe of draining oil fill is equipped with the slope and both ends are outwards stretched out, the both ends mouth of collection pipe covers respectively has removable sealed blind plate, the minimum of collection pipe is connected with the draining liquid outlet, the draining liquid outlet links to each other with adjacent solvent circulating pump's entry.
5. The leaching solvent draining desolventizing system of claim 1 or 4, wherein: the trilateral lateral wall of driping oil dipper is precipitous lateral wall, and one side lateral wall is the gentle slope lateral wall, the oil dipper extraction opening is located the upper portion of one side precipitous lateral wall, the last edge of gentle slope lateral wall is equipped with the flushing pipe that extends along the full width direction of gentle slope lateral wall, and the length direction along the flushing pipe distributes and has a plurality of spraying openings that wash gentle slope lateral wall upper portion inner wall, the both ends of flushing pipe stretch out outside the driping oil dipper.
6. The leaching solvent draining desolventizing system of claim 1 or 4, wherein: the oil bucket extraction opening is square, an outer port is connected with the separation chamber, a bottom plate of the separation chamber is of a structure with a high outer part and a low inner part, a top plate of the separation chamber is connected with a vacuumizing pipe connector, and the front side wall and the rear side wall of the separation chamber are provided with separation chamber sight glasses.
CN202123216213.2U 2021-12-20 2021-12-20 Leaching solvent draining and desolventizing system Active CN216629847U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202123216213.2U CN216629847U (en) 2021-12-20 2021-12-20 Leaching solvent draining and desolventizing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202123216213.2U CN216629847U (en) 2021-12-20 2021-12-20 Leaching solvent draining and desolventizing system

Publications (1)

Publication Number Publication Date
CN216629847U true CN216629847U (en) 2022-05-31

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ID=81743744

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Application Number Title Priority Date Filing Date
CN202123216213.2U Active CN216629847U (en) 2021-12-20 2021-12-20 Leaching solvent draining and desolventizing system

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CN (1) CN216629847U (en)

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