CN213077541U - Lithium hexafluorophosphate ultralow temperature dynamic crystallization equipment - Google Patents
Lithium hexafluorophosphate ultralow temperature dynamic crystallization equipment Download PDFInfo
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- CN213077541U CN213077541U CN202021648360.XU CN202021648360U CN213077541U CN 213077541 U CN213077541 U CN 213077541U CN 202021648360 U CN202021648360 U CN 202021648360U CN 213077541 U CN213077541 U CN 213077541U
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Abstract
An ultralow-temperature dynamic crystallization device for lithium hexafluorophosphate relates to the technical field of chemical processing. The device comprises a solution mixing bin, a crystallization bin, a drying separation bin, an electric cabinet, a control panel, a rotary switch, a one-way air valve, an air pipe, a drying box and an overturning clapboard; a crystallization bin is arranged below the solution mixing bin, a drying separation bin is arranged below the crystallization bin, an electric cabinet is arranged below the drying separation bin, and a control panel is arranged on the electric cabinet; the middle part of the solution mixing bin is divided into an upper cavity and a lower cavity by an overturning clapboard, and the outer part of the left side of the overturning clapboard is connected with a rotary switch; the one-way air valve is connected to the left side of the crystallization bin through an air pipe; the drying box is arranged at the left side position inside the drying and separating bin. After the technical scheme is adopted, the utility model discloses beneficial effect does: the method replaces the traditional static crystallization equipment technology, can ensure higher crystallization conversion rate of lithium fluorophosphate, has low processing cost and high practicability, and is suitable for batch industrial production.
Description
Technical Field
The utility model relates to a chemical industry processing technology field, concretely relates to lithium hexafluorophosphate ultra-low temperature dynamic crystallization equipment.
Background
With the continuous expansion of new energy fields in the future, lithium hexafluorophosphate is expected to continuously burst. Lithium fluorophosphate is the most important component of the electrolyte composition and accounts for about 43% of the total electrolyte cost. In the fluorine chemical industry, although the comparable reduction of the traditional products is obvious, the demand of high-end products is increased and strong momentum is kept. Especially lithium hexafluorophosphate production and marketing continue to maintain a good situation. White crystals or powder, relative density 1.50. The deliquescence is strong; is easy to dissolve in water and low-concentration organic solvents such as methanol, ethanol, acetone, carbonates, etc. Decomposed when exposed to air or heated. Lithium hexafluorophosphate is rapidly decomposed in air by the action of water vapor when exposed to air or heated, and PF5 is released to generate white smoke. Is easy to dissolve in water, and also can dissolve in low-concentration organic solvents such as methanol, ethanol, propanol, and carbonate. The new energy product lithium hexafluorophosphate is favored by domestic enterprises with technical advantages, the demand of the current market for lithium hexafluorophosphate is steadily increased, and China is expected to become a large country for lithium hexafluorophosphate production in the future.
Lithium hexafluorophosphate is a highly deliquescent material and is itself characterised by decomposition on exposure to air or heat, and therefore it is processed to give white crystals for convenient storage. At present, most of devices for lithium hexafluorophosphate crystallization are common static crystallization devices, a large amount of residual crystallization is easy to remain by using the devices, the crystallization conversion rate is low, the residual crystallization needs extra cleaning work, the processing cost is high, the practicability is low, and the devices are not suitable for batch industrial production.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a lithium hexafluorophosphate ultra-low temperature dynamic crystallization equipment, it replaces traditional static crystallization equipment technique, can guarantee higher lithium fluorophosphate crystallization conversion rate, and the crystallization residual material in the crystallization process can crystallize once more, does not need extra cleaning work, realizes the dynamic crystallization, and the processing cost is low, and the practicality is high, is applicable to batched industrial production.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the device comprises a solution mixing bin 1, a crystallization bin 2, a drying and separating bin 3, an electric cabinet 4, a control panel 5, a rotary switch 6, a one-way air valve 7, an air pipe 8, a drying box 9 and an overturning partition plate 10; a crystallization bin 2 is arranged below the solution mixing bin 1, a drying and separating bin 3 is arranged below the crystallization bin 2, an electric cabinet 4 is arranged below the drying and separating bin 3, and a control panel 5 is arranged on the electric cabinet 4; the middle part of the solution mixing bin 1 is divided into an upper cavity and a lower cavity by an overturning partition plate 10, and the outer part of the left side of the overturning partition plate 10 is connected with a rotary switch 6; the one-way air valve 7 is connected to the left side of the crystallization bin 2 through an air pipe 8; the drying box 9 is arranged at the left side position inside the drying and separating bin 3, and the drying box 9 is filled with a solid particle drying agent which can absorb a large amount of moisture to realize the separation and drying of the crystalline crystals and the water vapor; the electric control box 4, the control panel 5, the rotary switch 6 and the one-way air valve 7 are electrically connected.
An upper cover plate 1-1 which is matched in size and is hermetically covered is arranged above the solution mixing bin 1, a feed inlet 1-4 is arranged in the middle of the upper part of the upper cover plate 1-1, and the feed inlet 1-4 is a socket joint type interface, so that a higher sealing effect can be ensured, and gas-liquid leakage is prevented; the right side of the solution mixing bin 1 is provided with a discharge pipe 1-2, and the lower part of the discharge pipe 1-2 is connected with a pressure relief pipe 1-3; the drain pipe 1-2 is used for releasing redundant solution after mixing, and the pressure in the drain pipe 1-2 is released by the pressure relief pipe 1-3, so that the smooth draining is ensured.
The connection position of the solution mixing bin 1 and the crystallization bin 2 is equidistantly provided with a plurality of flow equalizing holes 2-1, and the mixed liquid in the solution mixing bin 1 uniformly flows into the crystallization bin 2 through the flow equalizing holes 2-1.
The right side of the crystallization bin 2 is provided with an observation port 2-2, and the observation port 2-2 is a glass window and can be used for observing the crystallization working process in the crystallization bin 2.
And a discharge port 3-1 is arranged at the right side of the drying and separating bin 3. The lithium hexafluorophosphate crystals can be taken out from the discharge port 3-1.
The power box 4-1 is arranged on the right side of the electric cabinet 4, and the power box 4-1 is connected with an external power supply to provide normal power supply for the device.
The rotary switch 6 and the turnover partition plate 10 are connected and installed through a connecting piece 6-1, and the connecting piece 6-1 is a rotary connecting piece and is used for controlling the turnover partition plate 10 to turn over under the control of the rotary switch 6, so that the solution in the solution mixing bin 1 flows into the crystallization bin 2.
The end part of the drainage pipe 1-2 is provided with an end cover 1-2-1, and the end part of the pressure relief pipe 1-3 is provided with a plugging head 1-3-1. The end cover 1-2-1 is used for opening and closing the drain pipe 1-2, and the blocking head 1-3-1 is tightly plugged at the pipe orifice of the pressure relief pipe 1-3 to ensure the tightness of the pressure relief pipe.
The utility model discloses a theory of operation: lithium salt and anhydrous hydrofluoric acid are input into a solution mixing bin 1 and are mixed to form LiF-HF solution, the LiF-HF solution flows into a crystallization bin 2, an electric cabinet controls a rotary switch to rotate and turn over a partition plate to achieve solution flowing, PF5 gas is introduced into the crystallization bin from a gas pipe to react to produce lithium hexafluorophosphate crystals, a PF5 gas is introduced into the process and a one-way gas valve is controlled by the electric cabinet to achieve one-way gas introduction, the crystallized lithium hexafluorophosphate enters a drying and separating bin to be separated, and solid particle drying agents filled in a drying box absorb a large amount of moisture to achieve separation and drying of the crystallized crystals and water vapor; the residual solution of crystallization can be discharged from the discharge pipe and processed for crystallization again, thus realizing dynamic crystallization.
After the technical scheme is adopted, the utility model discloses beneficial effect does: the method replaces the traditional static crystallization equipment technology, can ensure higher lithium fluorophosphate crystallization conversion rate, can crystallize the crystallization residual material in the crystallization process again, does not need extra cleaning work, realizes dynamic crystallization, has low processing cost and high practicability, and is suitable for batch industrial production.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a right side view of the middle crystallizing bin 2 and the drying and separating bin 3 of the present invention.
Description of reference numerals: the device comprises a solution mixing bin 1, a crystallization bin 2, a drying separation bin 3, an electric cabinet 4, a control panel 5, a rotary switch 6, a one-way air valve 7, an air pipe 8, a drying box 9, a turnover partition plate 10, an upper cover plate 1-1, a drain pipe 1-2, a pressure relief pipe 1-3, a feed inlet 1-4, an end cover 1-2-1, a plugging head 1-3-1, a flow equalizing hole 2-1, an observation hole 2-2, a discharge hole 3-1, a power supply box 4-1 and a connecting piece 6-1.
Detailed Description
Referring to fig. 1 to 2, the technical solution adopted by the present embodiment is: the device comprises a solution mixing bin 1, a crystallization bin 2, a drying and separating bin 3, an electric cabinet 4, a control panel 5, a rotary switch 6, a one-way air valve 7, an air pipe 8, a drying box 9 and an overturning partition plate 10; 1-1 parts of an upper cover plate, 1-2 parts of a drainage pipe, 1-3 parts of a pressure relief pipe, 1-4 parts of a feeding hole, 1-2-1 parts of an end cover, 1-3-1 parts of a plugging head, 2-1 parts of a flow equalizing hole, 2-2 parts of an observation hole, 3-1 parts of a discharging hole and 6-1 parts of a connecting piece; a crystallization bin 2 is arranged below the solution mixing bin 1, a drying and separating bin 3 is arranged below the crystallization bin 2, an electric cabinet 4 is arranged below the drying and separating bin 3, and a control panel 5 is arranged on the electric cabinet 4; the middle part of the solution mixing bin 1 is divided into an upper cavity and a lower cavity by an overturning partition plate 10, and the outer part of the left side of the overturning partition plate 10 is connected with a rotary switch 6; the one-way air valve 7 is connected to the left side of the crystallization bin 2 through an air pipe 8; the drying box 9 is arranged at the left side position inside the drying and separating bin 3, and the drying box 9 is filled with a solid particle drying agent which can absorb a large amount of moisture to realize the separation and drying of the crystalline crystals and the water vapor; the electric control box 4, the control panel 5, the rotary switch 6 and the one-way air valve 7 are electrically connected.
An upper cover plate 1-1 which is matched in size and is hermetically covered is arranged above the solution mixing bin 1, a feed inlet 1-4 is arranged in the middle of the upper part of the upper cover plate 1-1, and the feed inlet 1-4 is a socket joint type interface, so that a higher sealing effect can be ensured, and gas-liquid leakage is prevented; the right side of the solution mixing bin 1 is provided with a discharge pipe 1-2, and the lower part of the discharge pipe 1-2 is connected with a pressure relief pipe 1-3; the drain pipe 1-2 is used for releasing redundant solution after mixing, and the pressure in the drain pipe 1-2 is released by the pressure relief pipe 1-3, so that the smooth draining is ensured.
The connection position of the solution mixing bin 1 and the crystallization bin 2 is equidistantly provided with a plurality of flow equalizing holes 2-1, and the mixed liquid in the solution mixing bin 1 uniformly flows into the crystallization bin 2 through the flow equalizing holes 2-1.
The right side of the crystallization bin 2 is provided with an observation port 2-2, and the observation port 2-2 is a glass window and can be used for observing the crystallization working process in the crystallization bin 2.
And a discharge port 3-1 is arranged at the right side of the drying and separating bin 3. The lithium hexafluorophosphate crystals can be taken out from the discharge port 3-1.
The power box 4-1 is arranged on the right side of the electric cabinet 4, and the power box 4-1 is connected with an external power supply to provide normal power supply for the device.
The rotary switch 6 and the turnover partition plate 10 are connected and installed through a connecting piece 6-1, and the connecting piece 6-1 is a rotary connecting piece and is used for controlling the turnover partition plate 10 to turn over under the control of the rotary switch 6, so that the solution in the solution mixing bin 1 flows into the crystallization bin 2.
The end part of the drainage pipe 1-2 is provided with an end cover 1-2-1, and the end part of the pressure relief pipe 1-3 is provided with a plugging head 1-3-1. The end cover 1-2-1 is used for opening and closing the drain pipe 1-2, and the blocking head 1-3-1 is tightly plugged at the pipe orifice of the pressure relief pipe 1-3 to ensure the tightness of the pressure relief pipe.
Lithium salt and anhydrous hydrofluoric acid are input into a solution mixing bin 1 and are mixed to form LiF-HF solution, the LiF-HF solution flows into a crystallization bin 2, a rotary switch 6 is controlled by an electric cabinet 4 to rotate and turn over a partition plate 10 to achieve solution flow, PF5 gas is introduced into the crystallization bin 2 through a gas pipe 8 to react to produce lithium hexafluorophosphate crystals, the electric cabinet 4 controls a one-way gas valve 7 to achieve one-way gas introduction in the PF5 gas introduction process, the crystallized lithium hexafluorophosphate enters a drying and separating bin 3 to be separated, and a solid particle drying agent filled in a drying box 9 absorbs a large amount of moisture to achieve separation and drying of the crystals and water vapor; the residual solution of crystallization can be discharged from the discharge pipe 1-2 and processed for crystallization again, so as to realize dynamic crystallization.
After the technical scheme is adopted, the utility model discloses beneficial effect does: the method replaces the traditional static crystallization equipment technology, can ensure higher lithium fluorophosphate crystallization conversion rate, can crystallize the crystallization residual material in the crystallization process again, does not need extra cleaning work, realizes dynamic crystallization, has low processing cost and high practicability, and is suitable for batch industrial production.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. The utility model provides a lithium hexafluorophosphate ultra-low temperature dynamic crystallization equipment which characterized in that: the device comprises a solution mixing bin (1), a crystallization bin (2), a drying and separating bin (3), an electric cabinet (4), a control panel (5), a rotary switch (6), a one-way air valve (7), an air pipe (8), a drying box (9) and a turnover partition plate (10); a crystallization bin (2) is arranged below the solution mixing bin (1), a drying and separating bin (3) is arranged below the crystallization bin (2), an electric cabinet (4) is arranged below the drying and separating bin (3), and a control panel (5) is arranged on the electric cabinet (4); the middle part of the solution mixing bin (1) is divided into an upper cavity and a lower cavity by a turnover partition plate (10), and the outer part of the left side of the turnover partition plate (10) is connected with a rotary switch (6); the one-way air valve (7) is connected to the left side of the crystallization bin (2) through an air pipe (8); the drying box (9) is arranged at the left side position inside the drying and separating bin (3), and the drying box (9) is filled with a solid particle drying agent; the electric control box (4), the control panel (5), the rotary switch (6) and the one-way air valve (7) are electrically connected.
2. The ultra-low temperature dynamic crystallization equipment for lithium hexafluorophosphate according to claim 1, characterized in that: an upper cover plate (1-1) which is matched in size and is hermetically covered is arranged above the solution mixing bin (1), a feed port (1-4) is arranged in the middle of the upper part of the upper cover plate (1-1), and the feed port (1-4) is a socket joint type interface; the right side of the solution mixing bin (1) is provided with a discharge pipe (1-2), and the lower part of the discharge pipe (1-2) is connected with a pressure relief pipe (1-3).
3. The ultra-low temperature dynamic crystallization equipment for lithium hexafluorophosphate according to claim 1, characterized in that: a plurality of flow equalizing holes (2-1) are distributed at the connecting position of the solution mixing bin (1) and the crystallization bin (2) at equal intervals.
4. The ultra-low temperature dynamic crystallization equipment for lithium hexafluorophosphate according to claim 1, characterized in that: an observation port (2-2) is arranged on the right side of the crystallization bin (2), and the observation port (2-2) is a glass window.
5. The ultra-low temperature dynamic crystallization equipment for lithium hexafluorophosphate according to claim 1, characterized in that: a discharge hole (3-1) is arranged at the right side of the drying and separating bin (3).
6. The ultra-low temperature dynamic crystallization equipment for lithium hexafluorophosphate according to claim 1, characterized in that: the right side of the electric cabinet (4) is provided with a power supply box (4-1), and the power supply box (4-1) is connected with an external power supply.
7. The ultra-low temperature dynamic crystallization equipment for lithium hexafluorophosphate according to claim 1, characterized in that: the rotary switch (6) and the turnover partition plate (10) are connected and installed through a connecting piece (6-1), and the connecting piece (6-1) is a rotary connecting piece.
8. The ultra-low temperature dynamic crystallization apparatus for lithium hexafluorophosphate according to claim 2, wherein: an end cover (1-2-1) is arranged at the end part of the drainage pipe (1-2), and a plugging head (1-3-1) is arranged at the end part of the pressure relief pipe (1-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021648360.XU CN213077541U (en) | 2020-08-10 | 2020-08-10 | Lithium hexafluorophosphate ultralow temperature dynamic crystallization equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021648360.XU CN213077541U (en) | 2020-08-10 | 2020-08-10 | Lithium hexafluorophosphate ultralow temperature dynamic crystallization equipment |
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| CN213077541U true CN213077541U (en) | 2021-04-30 |
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| CN202021648360.XU Active CN213077541U (en) | 2020-08-10 | 2020-08-10 | Lithium hexafluorophosphate ultralow temperature dynamic crystallization equipment |
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