A distillation and purification device and distillation and purification method for preparing fluoroethylene carbonate

Abstract

The present invention belongs to the technical field of distillation and purification, specifically a distillation and purification device and a distillation and purification method for preparing fluoroethylene carbonate; the distillation and purification device includes a processing table, on which a distillation device is arranged; the distillation device includes a pipeline, one end of the pipeline is connected to a distillation tower, and the other end is connected to a condenser; a support frame is arranged on the processing table, and the condenser and the distillation tower are symmetrical on the support frame; a locking and adjusting unit is also arranged on the support frame; the locking and adjusting unit includes a linkage square column, on both sides of the linkage square column there are symmetrical linkage U rods, and a plurality of linkage U rods are commonly connected to a linkage square plate, and an energy dissipation and anti-sway mechanism is arranged on the linkage square plate. The distillation and purification device of the present invention uses an energy dissipation and anti-sway mechanism to prevent the pipeline from shaking during use, which may cause leakage of components in the purified liquid contained in the steam, thereby improving the stability of the pipeline during use and the sealing performance of the device, and improving the distillation and purification effect of the device.

Description

Technical Field

[0001] The invention belongs to the technical field of distillation and purification, and in particular relates to a distillation and purification device and a distillation and purification method for preparing fluoroethylene carbonate. Background Art

[0002] Fluoroethylene carbonate is a lithium-ion battery electrolyte additive. It has better performance in forming SEI film and forms a tight structural layer without increasing impedance. It can prevent further decomposition of the electrolyte and improve the low-temperature performance of the electrolyte. Among them, the most important item in the preparation process of fluoroethylene carbonate is distillation. The main purpose is to separate the product from the reaction mixture by utilizing the difference in boiling points between different raw material components, thereby improving the purity of fluoroethylene carbonate.

[0003] In the process of using the existing distillation and purification device for preparing fluoroethylene carbonate, the steam generated by the liquid in the tower after heating flows upward through the pipeline. Since the flow speed of the steam is different due to the influence of different factors, and the pressure change and flow pattern of the steam in the pipeline are different, the pipeline will be impacted and cause shaking during the distillation process, which not only affects the sealing performance of the connection between the pipeline and the tower or the condenser, but also causes the poor stability of the device during use, making the device more limited during use and reducing the distillation effect of the device. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a distillation and purification device and a distillation and purification method for preparing fluoroethylene carbonate, which effectively solves the problems in the above background technology.

[0005] To achieve the above-mentioned object, the first aspect of the present invention provides a distillation and purification device for preparing fluoroethylene carbonate, comprising a processing table, on which a distillation device is arranged; the distillation device comprises a pipeline, one end of which is connected to a distillation tower, and the other end of which is connected to a condenser; the feature is that: a support frame is arranged on the processing table, and the condenser and the distillation tower are symmetrically arranged on the support frame; the support frame is also provided with a locking distance adjustment unit;

[0006] The locking and adjusting distance unit includes a linkage square column, and linkage U rods are symmetrically arranged on both sides of the linkage square column. Several linkage U rods are commonly connected to a linkage square plate, and an energy dissipation and anti-sway mechanism is arranged on the linkage square plate; the energy dissipation and anti-sway mechanism includes a driving motor, and the driving motor is arranged on one side of the linkage square plate close to the processing table; the linkage square plate is also provided with an actuating and loading and unloading assembly for installing the driving motor.

[0007] Preferably, the energy dissipation and anti-sway mechanism also includes a double-end cam arranged on the output end of the driving motor, and two displacement cross blocks are arranged on the rotation path of the double-end cam, and the two displacement cross blocks are symmetrical on both sides of the pipeline; displacement slide rods are symmetrically arranged on the opposite surfaces of the two displacement cross blocks.

[0008] Preferably, the two displacement slide bars on one side of the processing table slide together with a displacement base plate, and the displacement base plate is arranged on the linkage square plate; a displacement spring is sleeved on the displacement slide bar, one end of the displacement spring is connected to the displacement base plate, and the other end is connected to the displacement cross block.

[0009] Preferably, the two displacement cross blocks are symmetrically provided with bent square rods on one side away from the processing table, the two bent square rods on one side of the pipeline are commonly connected to an energy dissipation cross plate, the energy dissipation cross plate is symmetrically provided with energy dissipation sliding columns, the two energy dissipation sliding columns are commonly connected to an energy dissipation semi-ring plate at one end close to the pipeline, an energy dissipation spring is sleeved on the energy dissipation sliding column, one end of the energy dissipation spring is connected to the energy dissipation cross plate, and the other end is connected to the energy dissipation semi-ring plate.

[0010] Preferably, both ends of the linkage square column are connected to guide blocks, a guide square column is slid on the guide block, both ends of the guide square column are connected to guide bases, and the guide bases are arranged on the support frame; a guide spring is sleeved on the guide square column, one end of the guide spring is connected to the guide base, and the other end is connected to the guide block; a plurality of locking slots are provided on the opposite surfaces of the two guide square columns.

[0011] Preferably, a locking substrate is provided on the top and bottom surfaces of the guide block, a locking cylinder is fixed on the locking substrate, a locking square plate is slid on the locking cylinder, the two locking square plates are commonly connected with a locking cross plate, a pull ring is provided on the side of the locking cross plate away from the guide block, a locking plug is provided on the side of the locking cross plate close to the guide block, and the locking plug passes through the guide block and is connected to the locking slot.

[0012] Preferably, a locking spring is sleeved on the locking cylinder, one end of the locking spring is connected to the locking square plate, and the other end is connected to a locking limit plate, and the locking limit plate is arranged at one end of the locking cylinder away from the locking substrate.

[0013] Preferably, a buffer pad is provided on the inner side wall of the energy dissipation semi-ring plate, and the pipeline is located on the moving path of the energy dissipation semi-ring plate; the inner diameter of the energy dissipation semi-ring plate is larger than the outer diameter of the pipeline.

[0014] Preferably, the actuator and loading and unloading assembly includes a T-shaped square plate arranged on the side of the linkage square plate, and a rotating shaft is rotated on the side of the T-shaped square plate away from the linkage square plate, and a rotating gear is installed on the end point of the rotating shaft, and a rotating ring is also provided on the side of the rotating gear away from the T-shaped square plate; the rotating gear is meshed with two positioning racks, and the two positioning racks are symmetrically arranged along the transverse center axis of the T-shaped square plate; the positioning rack is symmetrically provided with a rotating square plate, and the two rotating square plates are commonly connected with a rotating slide column, and a rotating base plate is slid on the rotating slide column, and the rotating base plate is arranged on the T-shaped square plate; a rotating spring is sleeved on the rotating slide column, one end of the rotating spring is connected to the rotating base plate, and the other end is connected to the rotating square plate.

[0015] The second aspect of the present invention provides a method for preparing fluoroethylene carbonate by distillation and purification, using the aforementioned device for preparing fluoroethylene carbonate by distillation and purification, comprising the following steps:

[0016] S1, when preparing fluoroethylene carbonate, the required raw materials are put into a distillation tower and heated;

[0017] S2. The steam generated by the raw materials after heating enters the condenser through the pipeline for purification;

[0018] S3. The energy dissipation and anti-sway mechanism is used to eliminate the impact force generated when steam flows in the pipeline.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention drives the energy dissipation cross plate to move by bending the square rod, so that the energy dissipation cross plates on both sides of the pipeline continuously move toward each other and relatively. Under the action of the energy dissipation sliding column and the energy dissipation spring, the energy dissipation semi-ring plate moves, so that it continuously contacts the side wall of the pipeline during the movement, and the buffer pad on the energy dissipation semi-ring plate continuously contacts the pipeline. When the steam flows in the pipeline, it causes an impact on it, which causes it to shake. The buffer force brought by the buffer pad and the energy dissipation spring can offset the above impact force, avoiding the phenomenon of shaking of the pipeline during use, which may affect the sealing of the connection between the two ends of the pipeline and the distillation tower or condenser during the distillation process, causing the components of the purified liquid contained in the steam to leak, thereby improving the stability of the pipeline during use and the sealing performance of the device, so that the distillation and purification effect of the device is improved;

[0021] 2. The present invention can loosen the positioning slide bar after the installation operation of the drive motor after the device is installed, and the positioning slide bar is driven to reset and move by the resetting of the positioning spring, so that it is connected with the positioning circular groove, thereby setting the rotating gear limit, so that the rotating spring in the buffer state cannot reset and move, and the elastic force generated strengthens the contact strength between the positioning circular groove and the positioning slide bar, thereby preventing the L-plate from moving due to non-human factors when loading and unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0023] In the attached picture:

[0024] Figure 1 It is one of the overall structural schematic diagrams of the present invention;

[0025] Figure 2 It is a schematic diagram of the supporting frame structure in the present invention;

[0026] Figure 3 This is a schematic diagram of the positioning circular groove structure in the present invention;

[0027] Figure 4 This is the second schematic diagram of the overall structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the energy dissipation semi-ring plate in the present invention;

[0029] Figure 6 This is an exploded view of the locking plug in the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the guide block in the present invention;

[0031] Figure 8 It is a schematic diagram of the displacement substrate structure in the present invention;

[0032] Fig. 9 This is a schematic diagram of the internal structure of the loading and unloading square tube in the present invention;

[0033] In the figure: 1, processing table; 2, pipeline; 3, distillation tower; 4, condenser; 5, support frame; 6, linkage square column; 7, linkage U rod; 8, linkage square plate; 9, driving motor; 10, double-end cam; 11, displacement cross block; 12, displacement slide rod; 13, displacement base plate; 14, displacement spring; 15, bending square rod; 16, energy dissipation cross plate; 17, energy dissipation slide column; 18, energy dissipation semi-ring plate; 19, energy dissipation spring; 20, guide block; 21, guide square column; 22, guide base; 23, guide spring; 24, locking slot; 25, locking base plate; 26, locking cylinder; 27, locking square Plate; 28, locking horizontal plate; 29, pull ring; 30, locking plug; 31, locking spring; 32, locking limit plate; 33, buffer pad; 34, T-shaped square plate; 35, rotating shaft; 36, rotating gear; 37, swivel; 38, positioning rack; 39, rotating square plate; 40, rotating slide column; 41, rotating base plate; 42, rotating spring; 43, extending square rod; 44, loading and unloading square plate; 45, loading and unloading square tube; 46, loading and unloading square column; 47, loading and unloading L plate; 48, rubber pad; 49, extrusion spring; 50, positioning circular groove; 51, positioning slide rod; 52, positioning limit plate; 53, positioning spring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] like Figures 1 to 9 As shown, the distillation and purification device for preparing fluoroethylene carbonate of the present invention comprises a processing table 1, on which a distillation device is arranged; the distillation device comprises a pipeline 2, one end of which is connected to a distillation tower 3, and the other end of which is connected to a condenser 4; a supporting frame 5 is arranged on the processing table 1, and the condenser 4 and the distillation tower 3 are symmetrical on the supporting frame 5; and a locking distance adjustment unit is also arranged on the supporting frame 5.

[0036] The locking distance adjustment unit comprises a linkage square column 6, on both sides of which linkage U rods 7 are symmetrically arranged, a plurality of linkage U rods 7 are commonly connected to a linkage square plate 8, and an energy dissipation and anti-sway mechanism is arranged on the linkage square plate 8.

[0037] The energy dissipation and anti-sway mechanism includes a drive motor 9, which is arranged on a side of the linkage square plate 8 close to the processing table 1; the linkage square plate 8 is also provided with an actuator assembly and disassembly assembly for installing the drive motor 9;

[0038] The two ends of the linkage square column 6 are connected to the guide blocks 20, and the guide square columns 21 are slidably arranged on the guide blocks 20. The two ends of the guide square columns 21 are connected to the guide bases 22, and the guide bases 22 are arranged on the support frame 5. A guide spring 23 is sleeved on the guide square column 21, and one end of the guide spring 23 is connected to the guide base 22, and the other end is connected to the guide block 20. A plurality of locking slots 24 are arranged on the opposite surfaces of the two guide square columns 21.

[0039] In addition, a locking substrate 25 is provided on the top and bottom surfaces of the guide block 20, a locking cylinder 26 is fixed on the locking substrate 25, a locking square plate 27 is slidably provided on the locking cylinder 26, and the two locking square plates 27 are commonly connected to a locking transverse plate 28, a pull ring 29 is provided on the side of the locking transverse plate 28 away from the guide block 20, and a locking plug 30 is provided on the side of the locking transverse plate 28 close to the guide block 20, and the locking plug 30 passes through the guide block 20 and is connected to the locking slot 24; a locking spring 31 is sleeved on the locking cylinder 26, one end of the locking spring 31 is connected to the locking square plate 27, and the other end is connected to a locking limit plate 32, and the locking limit plate 32 is arranged at the end of the locking cylinder 26 away from the locking substrate 25.

[0040] It should be noted that, by pulling the pull ring 29 outward, the locking horizontal plate 28 on it moves to the upper limit position on the locking cylinder 26 through the locking square plate 27, so that the locking spring 31 is in a buffering state, and then the locking plug 30 on the locking horizontal plate 28 is separated from the guide block 20 and is no longer connected to the locking slot 24, and the limit setting of the guide block 20 is released. By moving the guide block 20, it moves to the upper limit position on the guide square column 21, so that the guide spring 23 is in a buffering state, thereby driving the linkage square column 6 to move, and driving the energy dissipation semi-ring plate 18 on the energy dissipation and anti-sway mechanism provided thereon to move, so that it can be used at different positions of the pipeline 2, so that the operator can focus on the use of the section according to which section of the pipeline 2 is unstable during use;

[0041] When the position of the energy dissipation semi-ring plate 18 is adjusted, the pull ring 29 is released, and the locking cross plate 28 is reset and moved by the resetting of the locking spring 31, so that the locking plug 30 on it passes through the guide block 20 and is connected to one of the locking slots 24, thereby limiting the energy dissipation semi-ring plate 18 on the linkage square column 6 to the current position, avoiding the displacement of the energy dissipation semi-ring plate 18 during use, and improving the stability of the energy dissipation semi-ring plate 18 during use; at the same time, the guide spring 23 in the buffer state cannot be reset due to being limited, and the elastic force will act on the guide block 20, thereby strengthening the friction between the locking plug 30 and the locking slot 24, avoiding the movement of the locking cross plate 28 due to non-human factors during use, and improving the safety of the device during use.

[0042] In some specific embodiments, the energy dissipation and anti-sway mechanism also includes a double-end cam 10 arranged on the output end of the driving motor 9, the driving motor 9 adopts a low-speed motor, and two displacement cross blocks 11 are arranged on the rotation path of the double-end cam 10, and the two displacement cross blocks 11 are symmetrical to the two sides of the pipeline 2; the two displacement cross blocks 11 are symmetrically provided with displacement slide bars 12 on the opposite surfaces; the two displacement slide bars 12 on one side of the processing table 1 slide together with a displacement base plate 13, and the displacement base plate 13 is arranged on the linkage square plate 8; a displacement spring 14 is sleeved on the displacement slide bar 12, one end of the displacement spring 14 is connected to the displacement base plate 13, and the other end is connected to the displacement cross block 11;

[0043] There are symmetrical bent square rods 15 on one side of the two displacement cross blocks 11 away from the processing table 1, and the two bent square rods 15 on one side of the pipeline 2 are commonly connected to an energy dissipation cross plate 16, and energy dissipation sliding columns 17 are symmetrically arranged on the energy dissipation cross plate 16. The two energy dissipation sliding columns 17 are commonly connected to an energy dissipation semi-ring plate 18 at one end close to the pipeline 2, and an energy dissipation spring 19 is sleeved on the energy dissipation sliding column 17, one end of the energy dissipation spring 19 is connected to the energy dissipation cross plate 16, and the other end is connected to the energy dissipation semi-ring plate 18; a buffer pad 33 is provided on the inner side wall of the energy dissipation semi-ring plate 18, and the pipeline 2 is located on the moving path of the energy dissipation semi-ring plate 18; the inner diameter of the energy dissipation semi-ring plate 18 is larger than the outer diameter of the pipeline 2.

[0044] Specifically, it should be explained that the double-end cam 10 is driven to rotate by the driving motor 9, so that it will contact the displacement cross blocks 11 on both sides at the same time when rotating, so that it moves on the upper limit position of the displacement base plate 13 through the displacement slide bar 12, so that the displacement spring 14 is in a buffering state; when the rotating double-end cam 10 is no longer in contact with the displacement cross block 11, the displacement cross block 11 is reset and moved by the reset of the displacement spring 14. Since the rotation speed of the double-end cam 10 is slow, the movement speed of the displacement cross block 11 is also slow, so as to avoid excessive contact force between the energy dissipation semi-ring plate 18 and the pipeline 2, thereby causing damage to it; under the action of the bent square rod 15, the energy dissipation cross plate 16 is driven to move, so that the energy dissipation cross plates 16 on both sides of the pipeline 2 continuously move toward and relative to each other, The energy dissipation slide column 17 and the energy dissipation spring 19 enable the energy dissipation semi-ring plate 18 to move, so that it continuously contacts the side wall of the pipe 2 during the movement, and the buffer pad 33 on the energy dissipation semi-ring plate 18 continuously contacts the pipe 2. When the steam flows in the pipe 2, it impacts it and causes it to shake. The buffering force brought by the buffer pad 33 and the energy dissipation spring 19 can offset the above-mentioned impact force, thereby preventing the pipe 2 from shaking during use, which may affect the sealing of the connection between the two ends of the pipe 2 and the distillation tower 3 or the condenser 4 during the distillation process, thereby causing the components of the purified liquid contained in the steam to leak, thereby improving the stability of the pipe 2 during use and the sealing performance of the device, so that the distillation and purification effect of the device is improved.

[0045] It is worth mentioning that the buffer pad 33 on the energy dissipation semi-ring plate 18 is in reciprocating contact with the side wall of the pipeline 2, which can not only monitor the position of the pipeline 2, so that it can always be used in the current position, avoid the use position of the pipeline 2 from being offset, etc., so that the connection positions of its two ends with the distillation tower 3 or the condenser 4 will not deviate, thereby improving the use effect of the device. At the same time, the contact between the pipeline 2 and the energy dissipation semi-ring plate 18 and the buffer pad 33 is dynamic, avoiding the two from being in constant contact and causing serious wear of the contact surface, thereby improving the service life of the device, and can effectively absorb the energy generated by the shaking of the pipeline 2, further improving the stability of the device during use.

[0046] In some other specific embodiments, the above-mentioned actuating and loading and unloading assembly includes a T-shaped square plate 34 arranged on the side of the linkage square plate 8, and a rotating shaft 35 is rotatably provided on the side of the T-shaped square plate 34 away from the linkage square plate 8, and a rotating gear 36 is installed on the end point of the rotating shaft 35, and a rotating ring 37 is also provided on the side of the rotating gear 36 away from the T-shaped square plate 34; the rotating gear 36 is meshed with two positioning racks 38, and the two positioning racks 38 are symmetrically arranged along the transverse center axis of the T-shaped square plate 34; the positioning racks 38 are symmetrically provided with rotating square plates 39, and the two rotating square plates 39 are commonly connected with a rotating slide 40, and a rotating base plate 41 is slidably provided on the rotating slide 40, and the rotating base plate 41 is arranged on the T-shaped square plate 34; a rotating spring 42 is sleeved on the rotating slide 40, and one end of the rotating spring 42 is connected to the rotating base plate 41, and the other end is connected to the rotating square plate 39.

[0047] Furthermore, the actuating loading and unloading assembly also includes two extended square rods 43, and the two extended square rods 43 are respectively connected to the two position racks 38; the two extended square rods 43 are both mounted with loading and unloading square plates 44, and the loading and unloading square plates 44 are symmetrically arranged with the driving motor 9 as the central axis; the two loading and unloading square plates 44 are both provided with loading and unloading square tubes 45 on the facing surfaces, and the loading and unloading square columns 46 are slidably arranged on the loading and unloading square tubes 45, and the loading and unloading square columns 46 are connected with loading and unloading L-plates 47, and the driving motor 9 is located on the moving path of the loading and unloading L-plates 47; the contact surface between the loading and unloading L-plates 47 and the driving motor 9 is also provided with rubber pads 48; the loading and unloading square tubes 45 are provided with rubber pads 48; the loading and unloading square tubes 45 are provided with rubber pads 48. An extrusion spring 49 is also provided in the cylinder 45, one end of which is connected to the loading and unloading square column 46, and the other end is connected to the inner bottom surface of the loading and unloading square cylinder 45; a plurality of positioning circular grooves 50 are provided on the side of the rotating gear 36 close to the T-shaped square plate 34; a positioning slide bar 51 is slid on the T-shaped square plate 34, and a positioning limit plate 52 is connected to the end of the positioning slide bar 51 away from the rotating gear 36; a positioning spring 53 is sleeved on the positioning slide bar 51, one end of the positioning spring 53 is connected to the positioning limit plate 52, and the other end is connected to the T-shaped square plate 34; the positioning circular groove 50 is located on the moving path of the positioning slide bar 51.

[0048] It should be noted that by pulling the positioning slide bar 51 and making it move to the upper limit position on the T-shaped square plate 34, the positioning spring 53 is in a buffer state and the positioning slide bar 51 no longer contacts the positioning circular groove 50, thereby releasing the limit setting of the rotating gear 36, and the loading and unloading square plate 44 is reset and moved by the resetting of the rotating spring 42, so that the two extended square rods 43 move relative to each other, and then the two loading and unloading L plates 47 no longer contact the drive motor 9, thereby releasing the limit setting of the drive motor 9 and completing the disassembly operation of the drive motor 9.

[0049] Furthermore, by placing the driving motor 9 on the linkage square plate 8 and rotating the rotating ring 37, the rotating gear 36 thereon rotates and engages with the two positioning racks 38 to move, so that the rotating slide column 40 moves to the upper limit on the rotating base plate 41, so that the rotating spring 42 is in a buffer state, and the loading and unloading square plate 44 is driven to move by extending the square rod 43, so that the two loading and unloading square plates 44 move toward each other, and under the action of the loading and unloading square tube 45, the loading and unloading square column 46 and the extrusion spring 49, the loading and unloading L-plate 47 is driven to move toward the direction of the driving motor 9, so that the side of the loading and unloading L-plate 47 contacts the side of the driving motor 9, thereby clamping and setting the driving motor 9, and fixing it at the current position, thereby completing the installation of the driving motor 9.

[0050] It should be noted that the above-mentioned arrangement makes the loading and unloading operations of the drive motor 9 of the device convenient and quick, and is convenient for the operator to maintain or repair the drive motor 9, and the process can be completed without the aid of any tools. At the same time, it is convenient to select a matching drive motor 9 according to actual conditions, thereby improving the use effect of the device.

[0051] It is worth mentioning that the bottom surface of the loading and unloading L-plate 47 contacts the bottom surface of the drive motor 9, supports the drive motor 9, prevents it from dislocating or falling, and improves the safety of the device when in use. At the same time, the friction between the drive motor 9 and the loading and unloading L-plate 47 is increased by the provided rubber pad 48. The loading and unloading square tube 45 moves to the upper limit of the loading and unloading square column 46 through the continued movement of the positioning rack 38, so that the extrusion spring 49 is in a buffering state, thereby enhancing the contact strength between the loading and unloading L-plate 47 and the drive motor 9 and improving the installation effect of the drive motor 9.

[0052] Furthermore, when the device is installed, the positioning slide bar 51 is loosened after the installation operation of the drive motor 9, and the positioning slide bar 51 is reset and moved by the reset of the positioning spring 53, so that it is connected to the positioning circular groove 50, thereby limiting the rotating gear 36, so that the rotating spring 42 in the buffer state cannot be reset and moved, and the elastic force generated strengthens the contact strength between the positioning circular groove 50 and the positioning slide bar 51, thereby avoiding problems such as movement of the L-plate 47 due to non-human factors during loading and unloading.

[0053] The second aspect of the present invention also provides a distillation purification method for preparing fluoroethylene carbonate, comprising the following steps:

[0054] S1, when preparing fluoroethylene carbonate, the required raw materials are put into a distillation tower 3 and heated;

[0055] S2, the steam generated by the raw material after heating enters the condenser 4 through the pipeline 2 for purification;

[0056] S3. The impact force generated when the steam flows in the pipeline 2 can be eliminated through the energy dissipation and anti-sway mechanism.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A distillation and purification device for preparing fluoroethylene carbonate, comprising a processing table (1), on which a distillation device is arranged; the distillation device comprises a pipeline (2), one end of the pipeline (2) is connected to a distillation tower (3), and the other end of the pipeline (2) is connected to a condenser (4); characterized in that: A support frame (5) is provided on the processing table (1), and the condenser (4) and the distillation tower (3) are symmetrically arranged on the support frame (5); a locking distance adjustment unit is also provided on the support frame (5); The locking and adjusting distance unit comprises a linkage square column (6), linkage U rods (7) are symmetrically arranged on both sides of the linkage square column (6), a plurality of linkage U rods (7) are commonly connected to a linkage square plate (8), and an energy dissipation and anti-sway mechanism is arranged on the linkage square plate (8); the energy dissipation and anti-sway mechanism comprises a driving motor (9), and the driving motor (9) is arranged on a side of the linkage square plate (8) close to the processing table (1); the linkage square plate (8) is also provided with an actuating and disassembling assembly for installing the driving motor (9); The energy dissipation and anti-sway mechanism also includes a double-end cam (10) arranged on the output end of the driving motor (9), and two displacement cross blocks (11) are arranged on the rotation path of the double-end cam (10), and the two displacement cross blocks (11) are symmetrically arranged on the two sides of the pipeline (2); and displacement sliding rods (12) are symmetrically arranged on the opposite surfaces of the two displacement cross blocks (11); Two displacement slide bars (12) on one side of the processing table (1) slide together with a displacement base plate (13), and the displacement base plate (13) is arranged on the linkage square plate (8); a displacement spring (14) is sleeved on the displacement slide bar (12), and one end of the displacement spring (14) is connected to the displacement base plate (13), and the other end is connected to the displacement horizontal block (11); The two displacement horizontal blocks (11) are symmetrically provided with bent square rods (15) on one side away from the processing table (1); the two bent square rods (15) on one side of the pipeline (2) are commonly connected with an energy dissipation horizontal plate (16); energy dissipation sliding columns (17) are symmetrically provided on the energy dissipation horizontal plate (16); the two energy dissipation sliding columns (17) are commonly connected with an energy dissipation semi-ring plate (18) at one end close to the pipeline (2); an energy dissipation spring (19) is sleeved on the energy dissipation sliding column (17); one end of the energy dissipation spring (19) is connected with the energy dissipation horizontal plate (16), and the other end is connected with the energy dissipation semi-ring plate (18); The two ends of the linkage square column (6) are connected to a guide block (20), a guide square column (21) is slidably mounted on the guide block (20), the two ends of the guide square column (21) are connected to a guide base (22), and the guide base (22) is arranged on the support frame (5); a guide spring (23) is sleeved on the guide square column (21), one end of the guide spring (23) is connected to the guide base (22), and the other end is connected to the guide block (20); a plurality of locking slots (24) are arranged on opposite surfaces of the two guide square columns (21); The top and bottom surfaces of the guide block (20) are both provided with a locking substrate (25), a locking cylinder (26) is fixed on the locking substrate (25), a locking square plate (27) is slidably mounted on the locking cylinder (26), the two locking square plates (27) are commonly connected with a locking transverse plate (28), a pull ring (29) is provided on the side of the locking transverse plate (28) away from the guide block (20), a locking plug block (30) is provided on the side of the locking transverse plate (28) close to the guide block (20), and the locking plug block (30) passes through the guide block (20) and is connected to the locking slot (24).

2. The rectification and purification device for preparing fluoroethylene carbonate according to claim 1, characterized in that: A locking spring (31) is sleeved on the locking cylinder (26), one end of the locking spring (31) is connected to the locking square plate (27), and the other end is connected to a locking limit plate (32), which is arranged at one end of the locking cylinder (26) away from the locking base plate (25).

3. The rectification and purification device for preparing fluoroethylene carbonate according to claim 1, characterized in that: A buffer pad (33) is provided on the inner side wall of the energy dissipation semi-ring plate (18), and the pipeline (2) is located on the moving path of the energy dissipation semi-ring plate (18); the inner diameter of the energy dissipation semi-ring plate (18) is larger than the outer diameter of the pipeline (2).

4. The rectification and purification device for preparing fluoroethylene carbonate according to claim 1, characterized in that: The actuating assembly and disassembly assembly comprises a T-shaped square plate (34) arranged on the side of the linkage square plate (8); a rotating shaft (35) is rotatably provided on the side of the T-shaped square plate (34) away from the linkage square plate (8); a rotating gear (36) is mounted on the end point of the rotating shaft (35); a rotating ring (37) is further provided on the side of the rotating gear (36) away from the T-shaped square plate (34); the rotating gear (36) is meshed with two movable racks (38); the two movable racks (38) are rotated along the T-shaped square plate (3 4) is symmetrically arranged on the transverse center axis; the movable rack (38) is symmetrically provided with a rotating square plate (39), the two rotating square plates (39) are commonly connected with a rotating slide column (40), a rotating base plate (41) is slidably provided on the rotating slide column (40), and the rotating base plate (41) is arranged on the T-shaped square plate (34); the rotating slide column (40) is sleeved with a rotating spring (42), one end of the rotating spring (42) is connected to the rotating base plate (41), and the other end is connected to the rotating square plate (39).

5. A distillation and purification method for preparing fluoroethylene carbonate, using the distillation and purification device for preparing fluoroethylene carbonate as claimed in claim 1, characterized in that: Includes steps: S1, when preparing fluoroethylene carbonate, the raw materials required are put into a distillation tower (3) and heated; S2. The steam generated by the raw material after heating enters the condenser (4) through the pipeline (2) for purification; S3. The energy dissipation and anti-sway mechanism is provided to eliminate the impact force generated when the steam flows in the pipeline (2).

Images