Liquid drying device
By setting up primary and secondary dryers in the liquid drying device and using alumina balls as a desiccant, the problems of high energy consumption and low yield in the distillation drying of fluoroethylene carbonate were solved, achieving a drying effect with low energy consumption and high yield.
Patent Information
- Application Number
- CN202423143592.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The existing distillation and drying process for fluoroethylene carbonate is energy-intensive and has low yield.
A liquid drying device is used, including a primary dryer and a secondary dryer, with an adsorbent placement area. Alumina balls are used as the desiccant. The liquid is sequentially passed through the primary and secondary dryers for adsorption and drying, and after drying, it enters the finished product receiving tank.
It achieves a drying effect with low energy consumption and high output, thus improving drying efficiency.
Smart Images
Figure CN223615426U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technology of chemical drying equipment, and in particular to a liquid drying device. Background Technology
[0002] Fluorinated ethylene carbonate (FEC) is an important fine chemical material, mainly used as a film-forming additive and explosion-proof solvent in lithium-ion battery electrolytes and sodium-ion battery electrolytes. Adding FEC to the electrolyte forms a high-performance solid electrolyte interface (SEI) film on the electrode. This film has a compact structure, contains F-Li and -Si-F compounds, reduces battery impedance, effectively inhibits some electrolyte decomposition, and significantly improves the battery's specific capacity. Simultaneously, the fluorine atoms in FEC possess flame-retardant properties, which can significantly improve battery safety and lifespan.
[0003] Fluoroethylene carbonate (FEC) is typically dried using distillation, which is essentially a multi-stage distillation process. Under certain pressure, the differences in boiling points and saturated vapor pressures of the components in a miscible mixture cause the lighter components to vaporize. A distillation column, as one of the main pieces of equipment in distillation, usually consists of a column body, trays, a reboiler, a condenser, and a reflux tank. However, distillation for reducing moisture is energy-intensive and has low yield. Utility Model Content
[0004] In view of the above problems, this application provides a liquid drying apparatus to solve the technical problems of high energy consumption and low yield of reducing moisture in fluoroethylene carbonate (FEC) by distillation.
[0005] To achieve the above objectives, in a first aspect, this application provides a liquid drying apparatus, comprising a primary dryer, a secondary dryer, and a finished product receiving tank. The primary dryer is provided with a first inlet and a first outlet, the secondary dryer is provided with a second inlet and a second outlet, and the finished product receiving tank is provided with a third inlet. The first outlet is connected to the second inlet, and the second outlet is connected to the third inlet. The primary dryer is provided with a first adsorbent placement area, and the secondary dryer is provided with a second adsorbent placement area. Both the first and second adsorbent placement areas contain desiccant.
[0006] In one embodiment of this utility model, the desiccant is alumina balls, which are used to adsorb moisture in the liquid.
[0007] As one embodiment of this utility model, it also includes a feed pipe, which is connected to the first feed port, and the feed pipe is provided with a first fluid pump and a first control valve.
[0008] In one embodiment of this utility model, a feed buffer tank is provided between the primary dryer and the secondary dryer. The top of the feed buffer tank is connected to the first discharge port, and the bottom of the feed buffer tank is connected to the second feed port.
[0009] In one embodiment of this utility model, the first discharge port and the feed buffer tank are connected by a first connecting pipe, and a second control valve is provided on the first connecting pipe. The second feed port and the feed buffer tank are connected by a second connecting pipe, and a third control valve and a second fluid pump are provided on the second connecting pipe.
[0010] In one embodiment of this utility model, the first feed inlet is located on one side of the bottom of the primary dryer, the first discharge outlet is located at the top of the primary dryer, the second feed inlet is located on one side of the bottom of the secondary dryer, the second discharge outlet is located at the top of the secondary dryer, and the third feed inlet is located at the top of the finished product receiving tank.
[0011] In one embodiment of this utility model, the secondary dryer is provided with a fourth control valve located above the second discharge port, the finished product receiving tank is provided with a fifth control valve located above the third inlet, and the second discharge port and the third inlet are connected by a third connecting pipe.
[0012] As one embodiment of this utility model, it also includes a waste liquid receiving tank, which is located below the primary dryer and is connected to the bottom of the primary dryer.
[0013] In one embodiment of this utility model, the waste liquid receiving tank is connected to the primary dryer via a fourth connecting pipe, and a sixth control valve is provided on the fourth connecting pipe.
[0014] Unlike existing distillation drying technologies, the present application's technical solution guides the liquid sequentially through a primary dryer and a secondary dryer, with adsorbent placement zones within both dryers. Desiccant is placed in these zones to adsorb moisture from the liquid. The dried liquid is then transferred to a finished product receiving tank. This differs from the distillation process of fluoroethylene carbonate (FEC), where the mixture undergoes partial vaporization in a reboiler within a multi-layered or packed column to obtain the distillate. This invention, by placing desiccant in both the primary and secondary dryers connected in series, allows the moisture in the FEC flowing into the dryers to be directly absorbed by the desiccant, achieving a drying effect with lower energy consumption, higher yield, and improved drying efficiency.
[0015] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description
[0016] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.
[0017] In the accompanying drawings of the instruction manual:
[0018] Figure 1 This is a schematic diagram of the structure of a liquid drying device according to this application. Figure 1 ;
[0019] Figure 2 This is a schematic diagram of the structure of a liquid drying device according to this application. Figure 2 ;
[0020] Figure 3 This is a schematic diagram of the structure of a liquid drying device according to this application. Figure 3 ;
[0021] Figure 4 This is a schematic diagram of the structure of the primary dryer of a liquid drying apparatus according to this application;
[0022] Figure 5 This is a schematic diagram of the structure of a secondary dryer in a liquid drying apparatus according to this application.
[0023] The reference numerals used in the above figures are explained as follows:
[0024] 1. Primary dryer; 101. First feed inlet; 102. First discharge outlet; 103. First adsorbent placement area.
[0025] 2. Secondary dryer, 201. Second feed inlet, 202. Second discharge outlet, 203. Second adsorbent placement area, 204. Fourth control valve.
[0026] 3. Finished product receiving tank, 301. Third feed inlet, 302. Fifth control valve.
[0027] 4. Desiccant
[0028] 5. Feed pipe; 501. First fluid pump; 502. First control valve.
[0029] 6. Feed buffer tank,
[0030] 7. First connecting pipe; 701. Second control valve;
[0031] 8. Second connecting pipe; 801. Second fluid pump; 802. Third control valve;
[0032] 9. Third connecting pipe,
[0033] 10. Waste liquid receiving tank,
[0034] 11. Fourth connecting pipe; 1101. Sixth control valve. Detailed Implementation
[0035] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.
[0036] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.
[0037] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.
[0038] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, X and / or Y means: X exists, Y exists, and X and Y exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.
[0039] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.
[0040] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.
[0041] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.
[0042] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.
[0043] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.
[0044] According to some embodiments of this application, please refer to Figures 1 to 5This embodiment relates to a liquid drying device, including a primary dryer 1, a secondary dryer 2, and a finished product receiving tank 3. The primary dryer 1 is provided with a first inlet 101 and a first outlet 102. The secondary dryer 2 is provided with a second inlet 201 and a second outlet 202. The finished product receiving tank 3 is provided with a third inlet 301. The first outlet 102 is connected to the second inlet 201, and the second outlet 202 is connected to the third inlet 301. The primary dryer 1 is provided with a first adsorbent placement area 103, and the secondary dryer 2 is provided with a second adsorbent placement area 203. Both the first adsorbent placement area 103 and the second adsorbent placement area 203 contain desiccant 4.
[0045] According to some embodiments of this application, optionally, the desiccant 4 is alumina balls, which are used to adsorb moisture in the liquid.
[0046] In this way, the alumina balls can easily adsorb moisture from the liquid. When the liquid enters the first-stage dryer 1, the alumina balls in the first adsorbent placement zone 103 absorb the moisture in the liquid and perform the first drying. Then the liquid enters the second-stage dryer 2, where the alumina balls in the second adsorbent placement zone 203 absorb the moisture in the liquid and perform the second drying. Compared with distillation drying, the setup is simpler and the drying is more efficient, which helps to increase the yield.
[0047] According to some embodiments of this application, optionally, a feed pipe 5 is also included, which is connected to a first feed port 101, and a first fluid pump 501 and a first control valve 502 are provided on the feed pipe 5.
[0048] Thus, the liquid to be dried enters the primary dryer 1 through the feed pipe 5, which facilitates the control of the liquid entry by adjusting the first control valve 502, and facilitates the control of the first fluid pump 501 to push the liquid to be dried into the primary dryer 1 through the feed pipe 5 and transport it within the primary dryer 1.
[0049] According to some embodiments of this application, optionally, a feed buffer tank 6 is provided between the primary dryer 1 and the secondary dryer 2, the top of the feed buffer tank 6 is connected to the first discharge port 102, and the bottom of the feed buffer tank 6 is connected to the second feed port 201.
[0050] Thus, the feed buffer tank 6 is located between the primary dryer 1 and the secondary dryer 2, that is, a buffer space is set between the first and second drying of the liquid, which facilitates the smooth transport of the liquid between the primary dryer 1 and the secondary dryer 2. At the same time, the liquid after the first drying flows into the feed buffer tank 6 first, making the liquid more uniform, and then flows into the secondary dryer 2 for the second drying, which helps to improve the drying quality of the liquid.
[0051] According to some embodiments of this application, optionally, the first discharge port 102 and the feed buffer tank 6 are connected by a first connecting pipe 7, and a second control valve 701 is provided on the first connecting pipe 7. The second feed port 201 and the feed buffer tank 6 are connected by a second connecting pipe 8, and a third control valve 802 and a second fluid pump 801 are provided on the second connecting pipe 8.
[0052] In this way, the liquid after the first drying can enter the feed buffer tank 6 from the primary dryer 1 through the first connecting pipe 7. By adjusting the second control valve 701, the liquid can be controlled to enter the feed buffer tank 6. Then, it can flow from the feed buffer tank 6 into the secondary dryer 2 through the second connecting pipe 8. By adjusting the third control valve 802, the liquid can be controlled to enter the secondary dryer 2. At the same time, it is easy to adjust the second fluid pump 801 to push the liquid to be dried into the secondary dryer 2 through the second connecting pipe 8 and transport it in the secondary dryer 2, so that the drying system can operate more stably and efficiently.
[0053] According to some embodiments of this application, optionally, the first feed inlet 101 is located on one side of the bottom of the primary dryer 1, the first discharge outlet 102 is located at the top of the primary dryer 1, the second feed inlet 201 is located on one side of the bottom of the secondary dryer 2, the second discharge outlet 202 is located at the top of the secondary dryer 2, and the third feed inlet 301 is located at the top of the finished product receiving tank 3.
[0054] Thus, the liquid to be dried enters the primary dryer 1 from the first inlet 101 under the action of the first liquid pump, flows from the bottom to the top of the primary dryer 1, and flows out from the first outlet 102 after the first drying is completed. Then it flows through the feed buffer tank 6, and under the action of the second liquid pump, it enters the secondary dryer 2 from the second inlet 201, flows from the bottom to the top of the secondary dryer 2, and flows out from the second outlet 202 after the second drying is completed. Then it enters the finished product receiving tank 3 through the third inlet 301.
[0055] According to some embodiments of this application, optionally, the secondary dryer 2 is provided with a fourth control valve 204, which is located above the second discharge port 202, and the finished product receiving tank 3 is provided with a fifth control valve 302, which is located above the third feed port 301. The second discharge port 202 and the third feed port 301 are connected by a third connecting pipe 9.
[0056] Thus, the liquid after the second drying is completed enters the finished product receiving tank 3 from the secondary dryer 2 through the third connecting pipe 9. At the same time, it is convenient to control the liquid in the secondary dryer 2 to flow out through the second discharge port 202 by adjusting the fourth control valve 204, and to control the liquid in the third connecting pipe 9 to flow to the finished product receiving tank 3 by adjusting the fifth control valve 302.
[0057] According to some embodiments of this application, optionally, a waste liquid receiving tank 10 is also included, which is located below the primary dryer 1 and is connected to the bottom of the primary dryer 1.
[0058] Thus, the waste liquid receiving tank 10 can easily receive the waste liquid generated during the drying process in the primary dryer 1. The waste liquid in the primary dryer 1 flows from top to bottom, settles at the bottom of the primary dryer 1, and flows to the waste liquid receiving tank 10.
[0059] According to some embodiments of this application, optionally, the waste liquid receiving tank 10 is connected to the primary dryer 1 via a fourth connecting pipe 11, and a sixth control valve 1101 is provided on the fourth connecting pipe 11.
[0060] This facilitates the regulation of the sixth control valve 1101, allowing the waste liquid in the first-stage dryer 1 to enter the waste liquid receiving tank 10 through the fourth connecting pipe 11.
[0061] In some embodiments, such as Figure 3 As shown, the top of the waste liquid receiving tank 10 is connected to the primary dryer 1 and the secondary dryer 2 via connecting pipes. The bottom of the primary dryer 1 is equipped with a third connecting pipe 9, which is a three-way pipe with three ports. Two ports are connected to the primary dryer 1 and the secondary dryer 2 respectively, and the other port is connected to the waste liquid receiving tank 10. In this way, the waste liquid generated by the drying liquid in the primary dryer and the secondary dryer 2 can be discharged and flow into the waste liquid receiving tank 10.
[0062] This liquid drying apparatus can be used to dry fluoroethylene carbonate, such as... Figure 1 As shown, the fluoroethylene carbonate raw material can be pumped into the primary dryer 1 by the first liquid pump. After staying in the primary dryer 1 for 20 minutes, it is discharged to the feed buffer tank 6 and then fed into the secondary dryer 2. After staying in the secondary dryer 2 for 20 minutes, it is discharged to the finished product receiving tank 3.
[0063] In some embodiments, the primary dryer 1 is equipped with a regulating valve to adjust the feed rate of the liquid to be dried. The feed rate can be flexibly adjusted according to the operating status of the drying system, so as to facilitate continuous dehydration of the liquid and improve drying efficiency.
[0064] Unlike existing distillation drying technologies, the technical solution of this application guides the liquid sequentially through a primary dryer 1 and a secondary dryer 2. Adsorbent placement zones are set up within both dryers, and desiccant 4 is placed in these zones to adsorb moisture from the liquid. The dried liquid is then transferred to a finished product receiving tank 3. This differs from the distillation process of fluoroethylene carbonate (FEC), where the mixture undergoes partial vaporization in a reboiler within a multi-layered or packed distillation column to obtain the distillate. This invention, by placing desiccant 4 in both the primary and secondary dryers 1 and 2 in series, allows the moisture in the FEC flowing into the dryers to be directly absorbed by the desiccant 4, achieving a drying effect with lower energy consumption, higher yield, and improved drying efficiency.
[0065] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.
[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A liquid drying apparatus, characterized in that, The device includes a primary dryer, a secondary dryer, and a finished product receiving tank. The primary dryer has a first inlet and a first outlet, the secondary dryer has a second inlet and a second outlet, and the finished product receiving tank has a third inlet. The first outlet is connected to the second inlet, and the second outlet is connected to the third inlet. The primary dryer has a first adsorbent placement area, and the secondary dryer has a second adsorbent placement area. Both the first and second adsorbent placement areas contain desiccant.
2. The liquid drying apparatus according to claim 1, characterized in that, The desiccant is alumina balls, which are used to adsorb moisture in the liquid.
3. The liquid drying apparatus according to claim 2, characterized in that, It also includes a feed pipe connected to the first feed port, and the feed pipe is equipped with a first fluid pump and a first control valve.
4. The liquid drying apparatus according to claim 3, characterized in that, A feed buffer tank is provided between the primary dryer and the secondary dryer. The top of the feed buffer tank is connected to the first discharge port, and the bottom of the feed buffer tank is connected to the second feed port.
5. The liquid drying apparatus according to claim 4, characterized in that, The first discharge port and the feed buffer tank are connected by a first connecting pipe, and a second control valve is provided on the first connecting pipe. The second feed port and the feed buffer tank are connected by a second connecting pipe, and a third control valve and a second fluid pump are provided on the second connecting pipe.
6. The liquid drying apparatus according to claim 5, characterized in that, The first feed inlet is located on one side of the bottom of the primary dryer, the first discharge outlet is located at the top of the primary dryer, the second feed inlet is located on one side of the bottom of the secondary dryer, the second discharge outlet is located at the top of the secondary dryer, and the third feed inlet is located at the top of the finished product receiving tank.
7. The liquid drying apparatus according to claim 6, characterized in that, The secondary dryer is equipped with a fourth control valve located above the second discharge port. The finished product receiving tank is equipped with a fifth control valve located above the third inlet. The second discharge port and the third inlet are connected by a third connecting pipe.
8. The liquid drying apparatus according to claim 1, characterized in that, It also includes a waste liquid receiving tank, which is located below the primary dryer and is connected to the bottom of the primary dryer.
9. The liquid drying apparatus according to claim 8, characterized in that, The waste liquid receiving tank is connected to the primary dryer via a fourth connecting pipe, and a sixth control valve is provided on the fourth connecting pipe.