CN217909020U - FEC fluoridizes liquid deacidification device - Google Patents
FEC fluoridizes liquid deacidification device Download PDFInfo
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- CN217909020U CN217909020U CN202221975203.9U CN202221975203U CN217909020U CN 217909020 U CN217909020 U CN 217909020U CN 202221975203 U CN202221975203 U CN 202221975203U CN 217909020 U CN217909020 U CN 217909020U
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Abstract
The utility model discloses a FEC fluoridizes liquid deacidification device, include: a feed tank for holding fluoroethylene carbonate containing anhydrous hydrogen fluoride; a feed port of the heater is connected with a discharge port of the feed tank through a first pipe; a feed inlet of the flash evaporator is connected with a discharge outlet of the heater through a second pipe; a feed port of the condenser is connected with a first discharge port of the flash evaporator through a third pipe; the first product tank is connected with a first discharge hole of the condenser through a fourth pipe; and the second product tank is connected with a second discharge hole of the flash evaporator through a fifth pipe. According to the technical scheme, the materials are evaporated under the action of the flash evaporator, anhydrous hydrogen fluoride escapes from a first discharge port of the flash evaporator and enters the condenser, non-condensable gas is formed in the condenser and is finally collected by the first product tank, and fluoroethylene carbonate flows out from a second discharge port of the flash evaporator and enters the second product tank.
Description
Technical Field
The utility model relates to a chemical plant technical field especially relates to a FEC fluoride liquid deacidification device.
Background
Fluoroethylene carbonate (FEC) containing Anhydrous Hydrogen Fluoride (AHF) is the material in the product after fluorination of Ethylene Carbonate (EC), AHF is used as solvent, and F2 reacts with EC to generate FEC. The product contains AHF, FEC and EC. The deacidification was primarily performed by removing the AHF, and the remaining FEC and EC were separated by distillation. The FEC product quality has higher requirement on acidity, and the acidity of the product can be reduced after deacidification, the service life of equipment can be prolonged, and the operation safety risk can be reduced.
At present, the anhydrous hydrogen fluoride is removed from fluoroethylene carbonate materials containing the anhydrous hydrogen fluoride by kettle type negative pressure distillation, the kettle type negative pressure distillation is totally closed and vacuumized, and AHF enters a tail gas treatment system for treatment, so that the mode has low efficiency and long removal time.
SUMMERY OF THE UTILITY MODEL
Therefore, a need exists for providing a deacidification device for FEC fluorinated liquid, which solves the problem that the mode of removing anhydrous hydrogen fluoride from fluoroethylene carbonate material containing anhydrous hydrogen fluoride by kettle type negative pressure distillation is low in efficiency.
To achieve the above object, the present application provides an FEC fluorinated liquid deacidification apparatus, including:
a feed tank for holding fluoroethylene carbonate containing anhydrous hydrogen fluoride;
the feed port of the heater is connected with the discharge port of the feed tank through a first pipe;
the feed inlet of the flash evaporator is connected with the discharge outlet of the heater through a second pipe;
a feed port of the condenser is connected with a first discharge port of the flash evaporator through a third pipe;
the first product tank is connected with the first discharge port of the condenser through a fourth pipe and is used for containing anhydrous hydrogen fluoride;
and the second product tank is connected with the second discharge port of the flash evaporator through a fifth pipe and is used for fluoroethylene carbonate.
Further, still include first pans, the feed inlet of first pans passes through sixth union coupling the second discharge gate of condenser, the discharge gate of first pans passes through seventh union coupling the feed inlet of feed tank, be provided with the valve on the sixth pipe.
Further, the device also comprises a pump, and the pump is arranged on the first pipe and/or the second pipe and/or the third pipe and/or the fourth pipe and/or the fifth pipe and/or the sixth pipe and/or the seventh pipe.
Further, still include the second pans, the feed inlet of second pans is connected the fifth pipe, the discharge gate of second pans passes through eighth union coupling the feed inlet of feed tank, the feed inlet of second pans with the feed inlet department of first product jar all is provided with the valve.
Further, still include the trap, the fourth pipe divide into two sections, is first section and second section respectively, the feed inlet of trap passes through the first section of fourth pipe and connects the first discharge gate of condenser, first product jar passes through the second section of fourth pipe and connects the discharge gate of trap.
Further, still include the pump, be provided with the pump on the first pipe and/or the second pipe and/or the third pipe and/or the fourth pipe and/or the fifth pipe.
Further, the first discharge port of the flash evaporator is arranged at the top of the flash evaporator, and the second discharge port of the flash evaporator is arranged at the bottom of the flash evaporator.
Further, the first discharge gate of condenser is located the top of condenser, the second discharge gate of condenser is located the bottom of condenser.
Different from the prior art, in the above technical scheme, the material of fluoroethylene carbonate containing anhydrous hydrogen fluoride is stored in the feeding tank, the material is heated under the action of the heater, and rapidly enters the flash evaporator, and is evaporated under the action of the flash evaporator, and the boiling point of anhydrous hydrogen fluoride is lower than that of fluoroethylene carbonate, so that the anhydrous hydrogen fluoride escapes from the first discharge port of the flash evaporator and enters the condenser, and forms non-condensable gas in the condenser, and is finally collected by the first product tank, and the fluoroethylene carbonate flows out from the second discharge port of the flash evaporator and enters the second product tank, so as to realize the separation of anhydrous hydrogen fluoride and fluoroethylene carbonate.
Drawings
FIG. 1 is a schematic diagram of the structure of a FEC fluorination liquid deacidification apparatus having a feed tank, a heater, a flash evaporator, a condenser, a first product tank and a second product tank in this example;
FIG. 2 is a schematic structural diagram of a FEC fluorinated liquid deacidification apparatus having a first intermediate tank in this embodiment;
FIG. 3 is a schematic structural diagram of a FEC fluorinated liquid deacidification apparatus having a second intermediate tank in this embodiment;
FIG. 4 is a schematic structural diagram of an FEC fluorination liquid deacidification apparatus having a first intermediate tank and a second intermediate tank in this embodiment;
FIG. 5 is a schematic structural diagram of an apparatus for deacidifying an FEC fluorinated liquid in this embodiment, the apparatus having a first intermediate tank, a second intermediate tank and a trap;
description of reference numerals:
1. a feed tank;
2. a heater;
3. a flash evaporator;
4. a condenser;
5. a trap;
6. a first product tank;
7. a second product tank;
8. a first intermediate tank;
9. a second intermediate tank;
10. a pump;
11. a first tube;
12. a second tube;
13. a third tube;
14. a fourth tube;
141. a first stage;
142. a second stage;
15. a fifth pipe;
16. a sixth tube;
17. a seventh tube;
18. an eighth tube.
Detailed Description
In order to explain in detail possible application scenarios, technical principles, practical embodiments, and the like of the present application, the following detailed description is given with reference to the accompanying drawings in conjunction with the listed embodiments. The embodiments described herein are only used for clearly illustrating the technical solutions of the present application, and therefore are only used as examples, and the scope of the present application is not limited thereby.
Referring to fig. 1 to fig. 5, the present embodiment provides an FEC fluorinated liquid deacidification apparatus, including:
a feed tank 1 for accommodating Fluoroethylene carbonate (FEC) containing Anhydrous Hydrogen Fluoride (AHF);
a feed inlet of the heater 2 is connected with a discharge outlet of the feed tank 1 through a first pipe 11;
a feed inlet of the flash evaporator 3 is connected with a discharge outlet of the heater 2 through a second pipe 12;
a feed inlet of the condenser 4 is connected with a first discharge outlet of the flash evaporator 3 through a third pipe 13;
the first product tank 6 is connected with the first discharge hole of the condenser 4 through a fourth pipe 14, and is used for containing anhydrous hydrogen fluoride;
and the second product tank 7 is connected with the second discharge port of the flash evaporator 3 through a fifth pipe 15 and is used for containing fluoroethylene carbonate.
Different from the prior art, in the technical scheme, the material containing the fluoroethylene carbonate of the anhydrous hydrogen fluoride is stored in the feeding tank, the material is heated under the action of the heater and quickly enters the flash evaporator, the material is evaporated under the action of the flash evaporator, and the boiling point of the anhydrous hydrogen fluoride is lower than that of the fluoroethylene carbonate, so that the anhydrous hydrogen fluoride escapes from the first discharge port of the flash evaporator and enters the condenser, non-condensable gas is formed in the condenser and is finally collected by the first product tank, and the fluoroethylene carbonate flows out from the second discharge port of the flash evaporator and enters the second product tank, so that the separation of the anhydrous hydrogen fluoride and the fluoroethylene carbonate is realized.
Referring to fig. 2, 4 and 5, according to an embodiment of the present application, anhydrous hydrogen fluoride is converted into a gaseous state by the flash evaporator 3 and escapes from the first discharge port of the flash evaporator 3, during which part of fluoroethylene carbonate enters the condenser 4 together with anhydrous hydrogen fluoride from the first discharge port of the flash evaporator 3, which may eventually result in the anhydrous hydrogen fluoride in the first product tank 6 being impure, and the FEC fluoride liquid deacidification apparatus is designed to further include a first intermediate tank 8 for removing doped fluoroethylene carbonate before the anhydrous hydrogen fluoride enters the first product tank 6. The feed inlet of the first intermediate tank 8 is connected with the second discharge outlet of the condenser 4 through a sixth pipe 16, and the discharge outlet of the first intermediate tank 8 is connected with the feed inlet of the feed tank 1 through a seventh pipe 17. A valve is provided on the sixth tube 16. Opening a valve on the sixth pipe 16, material can enter the first intermediate tank 8 from the condenser 4; the valve is closed, and the material cannot enter the first intermediate tank 8; the material entering the condenser 4 is detected in advance and it is determined whether or not to open the valve on the sixth pipe 16. Under the action of the first intermediate tank 8, the fluoroethylene carbonate-doped material enters the feed tank 1 through the seventh pipe 17, and after multiple cycles, the fluoroethylene carbonate content entering the first product tank 6 is reduced, so that anhydrous hydrogen fluoride with higher purity can be obtained.
Referring to fig. 1-5, in order to rapidly transport the material, the FEC fluorinated liquid deacidification apparatus further includes a pump 10 according to an embodiment of the present application. The pump 10 is a machine that delivers or pressurizes a fluid, and transfers mechanical energy of a prime mover or other external energy to the fluid, causing the fluid to be energized. The pump 10 is arranged on the first pipe 11 and/or the second pipe 12 and/or the third pipe 13 and/or the fourth pipe 14 and/or the fifth pipe 15 and/or the sixth pipe 16 and/or the seventh pipe 17 and/or the eighth pipe 18, i.e. the pump 10 is arranged on any one or more of the first pipe 11, the second pipe 12, the third pipe 13, the fourth pipe 14, the fifth pipe 15, the sixth pipe 16, the seventh pipe 17 and the eighth pipe 18. The pump 10 can be selected from a plunger pump 10, a centrifugal pump 10, a reciprocating pump 10 and the like, and the efficiency of delivering fluoroethylene carbonate or anhydrous hydrogen fluoride can be improved.
Referring to fig. 3, 4 and 5, according to an embodiment of the present application, under the action of the flash evaporator 3, fluoroethylene carbonate flows out in liquid form, and part of anhydrous hydrogen fluoride enters the second product tank 7 along with fluoroethylene carbonate from the second discharge port of the flash evaporator 3, which may eventually result in impure fluoroethylene carbonate in the second product tank 7. The FEC fluorinated liquid deacidification apparatus is designed to further comprise a second intermediate tank 9. The feed inlet of the second intermediate tank 9 is connected with a fifth pipe 15, and the discharge outlet of the second intermediate tank 9 is connected with the feed inlet of the feed tank 1 through an eighth pipe 18. The feed inlet of the second intermediate tank 9 and the feed inlet of the first product tank 6 are both provided with valves. Opening a valve of a feeding hole of the second intermediate tank 9, so that the materials can enter the second intermediate tank 9; closing a valve of a feeding hole of the second intermediate tank 9, so that the material cannot enter the second intermediate tank 9; opening a valve of a feed inlet of the first product tank 6, and allowing the material to enter the first product tank 6; the valve of the feed inlet of the first product tank 6 is closed and material cannot enter the first product tank 6. The material entering the fifth pipe 15 is detected in advance, and whether the valve at the feed inlet of the second intermediate tank 9 or the feed inlet of the first product tank 6 needs to be opened is judged. Under the action of the second intermediate tank 9, the material doped with anhydrous hydrogen fluoride enters the feed tank 1 through the eighth pipe 18, and after multiple cycles, the content of the anhydrous hydrogen fluoride entering the second product tank 7 is reduced, so that fluoroethylene carbonate with higher purity can be obtained.
Referring to fig. 3 and 5, according to an embodiment of the present application, the FEC fluorinated liquid deacidification device further includes a trap 5. The fourth tube 14 is divided into two sections, a first section 141 and a second section 142. The inlet opening of the trap 5 is connected to the first outlet opening of the condenser 4 via a first section 141 of the fourth tube 14, and the first product tank 6 is connected to the outlet opening of the trap 5 via a second section 142 of the fourth tube 14. The non-condensable gas formed in the condenser 4 passes through a catcher 5 to trap anhydrous hydrogen fluoride therein, and the trapped anhydrous hydrogen fluoride flows into a first product tank 6 to obtain an anhydrous hydrogen fluoride product.
According to an embodiment of the present application, the trap 5 contains a demister to prevent the escape of anhydrous hydrogen fluoride along with the vacuum.
Referring to fig. 1-5, according to an embodiment of the present application, the first discharge port of flash evaporator 3 is at the top of flash evaporator 3, and the second discharge port of flash evaporator 3 is at the bottom of flash evaporator 3. The flash evaporator 3 has large volume and good flash evaporation effect. The upper part in the flash evaporator 3 is provided with a filler which can well prevent fluoroethylene carbonate from being carried away
Referring to fig. 1 to 5, according to an embodiment of the present disclosure, a first discharge port of the condenser 4 is located at the top of the condenser 4, a second discharge port of the condenser 4 is located at the bottom of the condenser 4, the condenser 4 condenses the rising steam, the condensate enters a second intermediate tank 9 and then returns to the feed tank 1, and fluoroethylene carbonate is fully recovered.
According to an embodiment of the present application, the heater 2 is heated by hot water, and the flash evaporation effect of the flash evaporator 3 can be adjusted by controlling the temperature of the hot water.
According to one embodiment of the present application, the FEC fluorinated liquid deacidification apparatus may separate anhydrous hydrogen fluoride from a fluoroethylene carbonate feed containing anhydrous hydrogen fluoride into first product tank 6 and fluoroethylene carbonate into first product tank 6.
The technical scheme has the following advantages:
the feed tank stores a fluoroethylene carbonate material containing anhydrous hydrogen fluoride, the material is heated under the action of the heater and quickly enters the flash evaporator to be evaporated under the action of the flash evaporator, the boiling point of the anhydrous hydrogen fluoride is lower than that of the fluoroethylene carbonate, so that the anhydrous hydrogen fluoride escapes from a first discharge port of the flash evaporator and enters the condenser, non-condensable gas is formed in the condenser and is finally collected by the first product tank, and the fluoroethylene carbonate flows out of a second discharge port of the flash evaporator and enters the second product tank, so that the separation of the anhydrous hydrogen fluoride and the fluoroethylene carbonate is realized. The deacidification is mainly aimed at removing AHF, and the remaining FEC and EC are rectified and separated. AHF meets water, and the material requirement on equipment is very high. After deacidification, the quality of FEC products has higher requirement on acidity, and after deacidification, the acidity can be reduced. Meanwhile, the requirements on equipment can be reduced, and the safety risk of operation can be reduced.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or related to other embodiments specifically defined. In principle, in the present application, the technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution as long as there is no technical contradiction or conflict.
Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the use of relational terms herein is intended only to describe particular embodiments and is not intended to limit the present application.
In the description of the present application, the term "and/or" is a expression for describing a logical relationship between objects, meaning that three relationships may exist, for example a and/or B, meaning: there are three cases of A, B, and both A and B. In addition, the character "/" herein generally indicates that the former and latter associated objects are in a logical relationship of "or".
In this application, terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
Without further limitation, in this application, the use of the phrases "comprising," "including," "having," or other similar expressions, is intended to cover a non-exclusive inclusion, and these expressions do not exclude the presence of additional elements in a process, method, or article that includes the elements, such that a process, method, or article that includes a list of elements may include not only those elements defined, but other elements not expressly listed, or may include other elements inherent to such process, method, or article.
As is understood in the examination of the guidelines, the terms "greater than", "less than", "more than" and the like in this application are to be understood as excluding the number; the expressions "above", "below", "within" and the like are understood to include the present numbers. Furthermore, the description of embodiments herein of the present application of the term "plurality" means more than two (including two), and the analogous meaning of "plurality" is also to be understood, e.g., "plurality", etc., unless explicitly specified otherwise.
In the description of the embodiments of the present application, spatially relative expressions such as "central," "longitudinal," "lateral," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used, and the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the specific embodiments or drawings and are only for convenience of describing the specific embodiments of the present application or for the convenience of the reader, and do not indicate or imply that the device or component in question must have a specific position, a specific orientation, or be constructed or operated in a specific orientation and therefore should not be construed as limiting the embodiments of the present application.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," "secured," and "disposed" used in the description of the embodiments of the present application should be construed broadly. For example, the connection can be a fixed connection, a detachable connection, or an integrated arrangement; it can be a mechanical connection, an electrical connection, or a communication connection; they may be directly connected or indirectly connected through an intermediate; which may be communication within two elements or an interaction of two elements. Specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains in accordance with specific situations.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent flow changes made by using the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the scope of the present invention.
Claims (8)
1. An FEC fluorinated liquid deacidification apparatus, comprising:
a feed tank for holding fluoroethylene carbonate containing anhydrous hydrogen fluoride;
the feed inlet of the heater is connected with the discharge outlet of the feed tank through a first pipe;
the feed inlet of the flash evaporator is connected with the discharge outlet of the heater through a second pipe;
a feed port of the condenser is connected with a first discharge port of the flash evaporator through a third pipe;
the first product tank is connected with the first discharge hole of the condenser through a fourth pipe and is used for containing anhydrous hydrogen fluoride;
and the second product tank is connected with the second discharge port of the flash evaporator through a fifth pipe and is used for fluoroethylene carbonate.
2. The FEC fluorinated liquid deacidification device according to claim 1, further comprising a first intermediate tank, wherein a feed inlet of the first intermediate tank is connected with a second discharge outlet of the condenser through a sixth pipe, a discharge outlet of the first intermediate tank is connected with a feed inlet of the feed tank through a seventh pipe, and a valve is arranged on the sixth pipe.
3. The FEC fluorinated liquid deacidification apparatus according to claim 2, further comprising a pump, wherein said pump is disposed on said first tube and/or said second tube and/or said third tube and/or said fourth tube and/or said fifth tube and/or said sixth tube and/or said seventh tube.
4. The FEC fluorinated liquid deacidification device according to claim 1, 2 or 3, further comprising a second intermediate tank, wherein a feed inlet of the second intermediate tank is connected with the fifth pipe, a discharge outlet of the second intermediate tank is connected with a feed inlet of the feed tank through an eighth pipe, and valves are arranged at a feed inlet of the second intermediate tank and a feed inlet of the first product tank.
5. The FEC fluorinated liquid deacidification device according to claim 1, further comprising a trap, wherein the fourth pipe is divided into two sections, namely a first section and a second section, a feed port of the trap is connected with a first discharge port of the condenser through the first section of the fourth pipe, and the first product tank is connected with a discharge port of the trap through the second section of the fourth pipe.
6. The FEC fluorinated liquid deacidification apparatus according to claim 1, further comprising a pump, wherein said pump is disposed on said first tube and/or said second tube and/or said third tube and/or said fourth tube and/or said fifth tube.
7. The FEC fluorinated liquid deacidification device according to claim 1, wherein the first outlet of said flash evaporator is at the top of said flash evaporator, and the second outlet of said flash evaporator is at the bottom of said flash evaporator.
8. The FEC fluorinated liquid deacidification device according to claim 1, wherein a first outlet of said condenser is located at a top portion of said condenser, and a second outlet of said condenser is located at a bottom portion of said condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221975203.9U CN217909020U (en) | 2022-07-28 | 2022-07-28 | FEC fluoridizes liquid deacidification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221975203.9U CN217909020U (en) | 2022-07-28 | 2022-07-28 | FEC fluoridizes liquid deacidification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217909020U true CN217909020U (en) | 2022-11-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221975203.9U Active CN217909020U (en) | 2022-07-28 | 2022-07-28 | FEC fluoridizes liquid deacidification device |
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| CN (1) | CN217909020U (en) |
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- 2022-07-28 CN CN202221975203.9U patent/CN217909020U/en active Active
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