High-purity chloroethylene carbonate production equipment

Abstract

The invention relates to high-purity chloroethylene carbonate production equipment, and relates to the field of chemical production equipment.The high-purity chloroethylene carbonate production equipment comprises a crystallization kettle and non-woven fabric, the crystallization kettle comprises a kettle body and a kettle cover, the kettle body and the kettle cover are connected through a flange, a discharging port is formed in the lower bottom of the kettle body, a feeding port is formed in the kettle cover, and the non-woven fabric is of a barrel-shaped structure; the non-woven fabric is arranged in the kettle body and is attached to the inner wall of the kettle body. The crystallization kettle has the effect that a user can conveniently clean and recover crystals on the inner wall of the crystallization kettle.

Description

Technical Field

[0001] The present application relates to the field of chemical production equipment, and particularly to a production equipment for high-purity ethylene chlorocarbonate. Background Art

[0002] Ethylene chlorocarbonate is an organic compound commonly used as an electrolyte additive for lithium batteries. With the development of the lithium battery production field, the market demand for ethylene chlorocarbonate has been increasing year by year.

[0003] The related production methods of ethylene chlorocarbonate include the preparation of the reaction solution and the purification of ethylene chlorocarbonate. By generating a reaction solution from ethylene carbonate raw material and chlorine gas under ultraviolet light irradiation, and then transferring the reaction solution into a crystallization kettle for cooling crystallization, ethylene carbonate crystals are precipitated from the reaction solution, thereby increasing the content of ethylene chlorocarbonate in the reaction solution, and high-purity ethylene chlorocarbonate is obtained through purification.

[0004] The above-mentioned related technical solutions have the following defects: when the reaction solution crystallizes in the crystallization kettle, the precipitated crystals are easily attached to the inner wall of the crystallization kettle, and it takes time to clean the crystallization. Summary of the Invention

[0005] In order to facilitate the cleaning and recovery of the crystallization on the inner wall of the crystallization kettle by the user, the present application provides a production equipment for high-purity ethylene chlorocarbonate.

[0006] The production equipment for high-purity ethylene chlorocarbonate provided by the present application adopts the following technical solutions: A production equipment for high-purity ethylene chlorocarbonate includes a crystallization kettle and a non-woven fabric. The crystallization kettle includes a kettle body and a kettle cover. The kettle body and the kettle cover are flange-connected. An outlet is opened at the lower bottom of the kettle body, and an inlet is opened on the kettle cover. The non-woven fabric is in a barrel shape and is arranged in the kettle body and fits on the inner wall of the kettle body.

[0007] By adopting the above technical solutions, by arranging a non-woven fabric in the crystallization kettle and making the non-woven fabric fit on the inner wall of the crystallization kettle, the reaction solution can flow on both sides of the non-woven fabric. When crystallization occurs in the crystallization kettle, the crystallization is generated inside the non-woven fabric and fits on the inner side of the non-woven fabric. The user can recover the crystallization attached to the inner side of the non-woven fabric by taking out and replacing the non-woven fabric. There is less crystallization attached to the inner wall of the kettle body, which is convenient for the user to clean and recover the crystallization, thereby improving the work efficiency.

[0008] Optionally, a connecting member is arranged on the non-woven fabric. The connecting member is in a circular ring structure, and through holes are opened on the connecting member. The connecting member is flange-connected between the kettle body and the kettle cover, and the non-woven fabric is connected to the connecting member.

[0009] By adopting the above technical solution, a connector is arranged on the non-woven fabric so that the connector can be fixed between the kettle body and the kettle cover through a flange connection, thereby enabling the upper end of the non-woven fabric to be fixed in the kettle body, thereby keeping the non-woven fabric in a state of being fitted in the kettle body.

[0010] Optionally, a slot is provided on the end surface of the connector, and a clamping ring is connected to the opening of the non-woven fabric, and the clamping ring is clamped in the slot.

[0011] By adopting the above technical solution, a groove is opened on the end surface of the connector and a clamping ring is connected to the non-woven fabric, so that the non-woven fabric can be clamped in the groove through the clamping ring, thereby making the non-woven fabric and the connector detachable and connected, making it convenient for users to replace the non-woven fabric.

[0012] Optionally, a weight ring is provided on the non-woven fabric, and the weight ring is fixed to the bottom of the non-woven fabric.

[0013] By adopting the above technical solution, a weight ring is arranged on the non-woven fabric, so that the weight ring pulls the bottom of the non-woven fabric, thereby enabling the non-woven fabric to remain in a taut state and fit in the kettle body.

[0014] Optionally, a connecting tube is provided on the non-woven fabric, the connecting tube includes a mounting disk and an inserting tube, the mounting disk is a circular ring structure, the inserting tube is a cylindrical structure, the mounting disk is coaxially connected to the inserting tube, the non-woven fabric is connected in the inserting tube, and a plurality of through holes are opened on the inserting tube.

[0015] By adopting the above technical solution, an insert tube is arranged on the mounting plate to connect the insert tube to the non-woven fabric. When the user takes the non-woven fabric out of the insert tube, the reaction liquid in the non-woven fabric can flow out into the crystallization kettle through the through hole, so that the user can pour out the reaction liquid in the non-woven fabric and retain the crystals in the non-woven fabric, and the user can recover the crystals precipitated from the reaction liquid.

[0016] Optionally, a drawstring is provided on the non-woven fabric, one end of the drawstring is fixed on the non-woven fabric, and the other end is connected to a draw ring, and a hook is connected to the insert tube, and the draw ring is used to be hung on the hook.

[0017] By adopting the above technical solution, by setting a drawstring on the non-woven fabric, the user can pull up the bottom of the non-woven fabric with the drawstring, so that the reaction liquid in the non-woven fabric can seep out from the middle of the non-woven fabric. When more crystals accumulate at the bottom of the non-woven fabric, the water permeability of the bottom of the non-woven fabric decreases. The user can pull the non-woven fabric to allow the reaction liquid in the non-woven fabric to continue to seep out, making it convenient for the user to remove the non-woven fabric and recover the crystals.

[0018] Optionally, the pull rope is provided with a plurality of pull rings, and the plurality of pull rings are arranged at intervals along the length direction of the pull rope.

[0019] By adopting the above technical solution, by setting multiple pull rings on the pull rope, the user hangs different pull rings on the hooks respectively, which can lift the position of the bottom of the non-woven fabric. When more crystals are accumulated at the bottom of the non-woven fabric, the reaction liquid in the non-woven fabric can still seep out.

[0020] Optionally, a clamping convex circle is arranged on a side of the inserting tube away from the mounting plate, and a clamping ring is arranged at the opening of the non-woven fabric, and the clamping ring is clamped on the clamping convex circle.

[0021] By adopting the above technical solution, a clamping convex circle is arranged on the insert cylinder, so that the clamping ring of the non-woven fabric can be clamped on the clamping convex circle, and then the upper end of the non-woven fabric can be detachably connected to the clamping convex circle, which is convenient for use.

[0022] In summary, the beneficial technical effects of this application are: 1. By arranging a non-woven fabric in the crystallization kettle and making the non-woven fabric fit in the crystallization kettle, when the reaction liquid crystallizes in the crystallization kettle, the precipitated crystals can be accumulated in the non-woven fabric and on the inner side wall of the bottom of the non-woven fabric. The user can recover the precipitated crystals by replacing the non-woven fabric. By peeling off the non-woven fabric, the crystals attached to the inner side wall of the kettle body are reduced, which is convenient for the user to clean and recover the crystals; 2. By arranging a connector on the non-woven fabric, the connector plays the role of fixing the upper side of the non-woven fabric, so that the non-woven fabric can maintain a stable position in the kettle body. By arranging a clamp ring on the non-woven fabric, the clamp ring can be clamped in the clamping groove, thereby facilitating the user to replace the non-woven fabric; 3. By setting a drawstring on the non-woven fabric and setting a draw ring at one end of the drawstring, the user can pull up the bottom of the non-woven fabric through the drawstring. When more crystals are attached to the inner wall of the bottom of the non-woven fabric, the water permeability of the non-woven fabric is poor. By lifting the bottom of the non-woven fabric, the reaction liquid can continue to seep out of the non-woven fabric. By setting a hook on the connecting tube, it is convenient for the user to hang the draw ring on the hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0024] Figure 2 It is a schematic diagram of the positional relationship of the non-woven fabric in Example 1 of the present application.

[0025] Figure 3 It is a schematic diagram of the structure of the connecting piece of Example 1 of the present application.

[0026] Figure 4 It is a schematic diagram of the structure of the connecting tube of Example 2 of the present application.

[0027] Figure 5 It is a schematic diagram of the connection relationship between the non-woven fabric and the connecting tube in Example 2 of the present application.

[0028] Figure 6 It is a schematic diagram of the connection relationship between the pull ring and the pull cord in Embodiment 2 of the present application.

[0029] Reference numerals: 1, crystallization kettle; 11, kettle body; 111, support; 112, discharge port; 12, kettle cover; 121, feed port; 2, non-woven fabric; 21, counterweight ring; 3, connecting piece; 31, card slot; 32, snap ring; 4, connecting cylinder; 41, mounting plate; 42, inserting cylinder; 421, through hole; 422, clamping convex circle; 5, pull cord; 51, pull ring; 52, hook. Detailed implementation manners

[0030] The present application will be further described in detail below with reference to the accompanying drawings.

[0031] Embodiment 1 An embodiment of the present application discloses a high-purity chloroethylene carbonate production device. Referring to Figure 1 and Figure 2 , it includes a crystallization kettle 1 and a non-woven fabric 2. The crystallization kettle 1 includes a kettle body 11 and a kettle cover 12. The kettle body 11 is a metal barrel structure. A conical bottom is provided at the lower bottom of the kettle body 11. The kettle cover 12 is covered on the opening of the kettle body 11. The kettle cover 12 and the kettle body 11 are detachably connected through a flange. A plurality of supports 111 are arranged on the kettle body 11. The supports 111 are used to keep the kettle body 11 vertically arranged. The opening of the kettle body 11 is vertically upward. A discharge port 112 is provided at the lower bottom of the kettle body 11. The discharge port 112 is provided at the conical bottom of the kettle body 11. A feed port 121 is provided on the kettle cover 12. After a reaction liquid is formed by reacting ethylene carbonate and chlorine gas under ultraviolet light irradiation and the reaction liquid is injected into the crystallization kettle 1 from the feed port 121, the temperature in the crystallization kettle 1 is reduced. At this time, ethylene carbonate crystals and a chloroethylene carbonate solution are precipitated in the crystallization kettle 1. The non-woven fabric 2 is attached to the inner wall of the crystallization kettle 1. The non-woven fabric 2 has water permeability. When ethylene carbonate crystals are formed, the crystals adhere to the surface of the non-woven fabric 2, thereby reducing the probability of the crystals adhering to the inner wall of the crystallization kettle 1. By replacing the non-woven fabric 2, the user can keep the inner wall of the crystallization kettle 1 clean, and the user can recover the ethylene carbonate crystals from the non-woven fabric 2, improving the production efficiency.

[0032] Referring to Figure 2 and Figure 3, a connecting member 3 is provided on the non-woven fabric 2, and the connecting member 3 is detachably connected to the crystallization kettle 1. The connecting member 3 is arranged in a circular ring structure, and a plurality of through holes are provided on the connecting member 3. The connecting member 3 is flange-connected between the kettle body 11 and the kettle cover 12. A clamping groove 31 is provided on the end face of the connecting member 3. The clamping groove 31 is an annular groove and is coaxially arranged with the connecting member 3. The non-woven fabric 2 is in a cylindrical structure, and a clamping ring 32 is provided on one side of the opening of the non-woven fabric 2. The non-woven fabric 2 is stitched and connected to the clamping ring 32. The clamping ring 32 is used to be clamped in the clamping groove 31, so that the user can quickly replace the non-woven fabric 2 through the clamping ring 32, and the non-woven fabric 2 with crystals attached can be quickly taken out of the crystallization kettle 1.

[0033] Refer to Figure 4 , a conical bottom is provided at the bottom of the non-woven fabric 2, and a counterweight ring 21 is provided at the bottom of the non-woven fabric 2. The counterweight ring 21 is coaxially fixed at the bottom of the non-woven fabric 2. The counterweight ring 21 and the connecting member 3 jointly pull the non-woven fabric 2, so that the surface of the non-woven fabric 2 is tightened and arranged in the crystallization kettle 1. When the reaction liquid is stored in the kettle body 11, the new non-woven fabric 2 can be attached to the inner wall of the crystallization kettle 1 through the counterweight ring 21 after the non-woven fabric 2 is replaced.

[0034] The implementation principle of the embodiment of the present application is as follows: by arranging the non-woven fabric 2 in the kettle body 11, the non-woven fabric 2 can be attached to the inside of the kettle body 11 and hold the reaction liquid. When the temperature in the kettle body 11 decreases, crystals precipitate in the reaction liquid, and the crystals can accumulate in the non-woven fabric 2 and adhere to the inner surface of the non-woven fabric 2. The user can recycle the crystals by replacing the non-woven fabric 2. During the crystallization process of the reaction liquid, the probability of crystals adhering to the inner wall of the kettle body 11 can be reduced, thereby facilitating the user to clean the crystallization kettle 1 and improving work efficiency.

[0035] Embodiment 2 The embodiment of the present application discloses a high-purity chloroethylene carbonate production device. Refer to Figure 4 and Figure 5 , the difference from Embodiment 1 is that a connecting cylinder 4 is provided on the non-woven fabric 2, and the connecting cylinder 4 is clamped in the kettle body 11.

[0036] Refer to Figure 4 and Figure 5 , the connecting cylinder 4 includes a mounting plate 41 and an inserting cylinder 42. The mounting plate 41 is a flange plate, and the mounting plate 41 is installed between the kettle body 11 and the kettle cover 12. The inserting cylinder 42 is coaxially connected to the mounting plate 41, and the inserting cylinder 42 is inserted into the kettle body 11. A clamping convex circle 422 is provided at one end of the inserting cylinder 42 far from the mounting plate 41, and the non-woven fabric 2 is clamped on the clamping convex circle 422 through the clamping ring 32.

[0037] Refer to Figure 4 and Figure 5, a drawstring 5 is provided on the non-woven fabric 2. One end of the drawstring 5 is connected with a pull ring 51, and the other end is fixed at the bottom of the non-woven fabric 2. A hook 52 is connected to the inner wall of the insertion cylinder 42. The pull ring 51 is used to hang on the hook 52. The user can lift the bottom of the non-woven fabric 2 through the drawstring 5, so that the reaction liquid accumulated in the non-woven fabric 2 can be poured out. A plurality of through holes 421 are formed in the insertion cylinder 42, and the reaction liquid flows into the kettle body 11 through the through holes 421.

[0038] Referring to Figure 6 , a plurality of pull rings 51 are arranged at intervals on the drawstring 5. When there is a lot of crystallization accumulated at the bottom of the non-woven fabric 2, the water permeability of the bottom of the non-woven fabric 2 decreases. The user can hang the pull ring 51 in the middle of the drawstring 5 on the hook 52 to raise the bottom of the non-woven fabric 2, so that the reaction liquid contained in the non-woven fabric 2 can pass through the middle of the non-woven fabric 2, so that the reaction liquid with a lower concentration of ethylene carbonate can flow out of the non-woven fabric 2 and flow out of the crystallization kettle 1 through the discharge port 112.

[0039] The implementation principle of the embodiment of the present application is as follows: by providing a drawstring 5 on the non-woven fabric 2, after the user removes the kettle lid 12, the non-woven fabric 2 can be pulled up through the drawstring 5, so that the reaction liquid in the non-woven fabric 2 can continue to flow out from the inner side of the non-woven fabric 2, reducing the probability of the water permeability of the non-woven fabric 2 decreasing due to crystallization accumulation on the non-woven fabric 2. After the user pulls up the non-woven fabric 2, the reaction liquid in the non-woven fabric 2 can flow out through the through holes 421, which is convenient for the user to remove and recycle the non-woven fabric 2.

[0040] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high-purity ethylene chlorocarbonate production device, characterized in that: It includes a crystallization kettle (1) and a non-woven fabric (2). The crystallization kettle (1) includes a kettle body (11) and a kettle cover (12). The kettle body (11) and the kettle cover (12) are flange-connected. An outlet (112) is provided at the lower bottom of the kettle body (11), and a feed inlet (121) is provided on the kettle cover (12). The non-woven fabric (2) is of a barrel-shaped structure and is arranged inside the kettle body (11) and fits on the inner wall of the kettle body (11).

2. The high-purity chloroethylene carbonate production equipment according to claim 1, characterized in that: A connector (3) is provided on the non-woven fabric (2). The connector (3) is of a circular ring structure, and through holes are provided on the connector (3). The connector (3) is flange-connected between the kettle body (11) and the kettle cover (12), and the non-woven fabric (2) is connected to the connector (3).

3. The high-purity chloroethylene carbonate production equipment according to claim 2, characterized in that: A clamping groove (31) is provided on the end face of the connector (3). A clamping ring (32) is connected to the opening of the non-woven fabric (2), and the clamping ring (32) is clamped in the clamping groove (31).

4. A high-purity chloroethylene carbonate production device according to claim 1, characterized in that: A weight ring (21) is provided on the non-woven fabric (2), and the weight ring (21) is fixed at the bottom of the non-woven fabric (2).

5. A high-purity chloroethylene carbonate production device according to claim 1, characterized in that: A connecting cylinder (4) is provided on the non-woven fabric (2). The connecting cylinder (4) includes a mounting disc (41) and an inserting cylinder (42). The mounting disc (41) is of a circular ring structure, the inserting cylinder (42) is of a cylindrical structure, the mounting disc (41) and the inserting cylinder (42) are coaxially connected, the non-woven fabric (2) is connected in the inserting cylinder (42), and a plurality of through holes (421) are provided on the inserting cylinder (42).

6. The high-purity vinyl chloroformate production equipment according to claim 5, characterized in that: A pull rope (5) is provided on the non-woven fabric (2). One end of the pull rope (5) is fixed on the non-woven fabric (2), and the other end is connected with a pull ring (51). A hook (52) is connected to the inserting cylinder (42), and the pull ring (51) is used to be hung on the hook (52).

7. The high-purity chloroethylene carbonate production equipment according to claim 6, characterized in that: A plurality of pull rings (51) are provided on the pull rope (5), and the plurality of pull rings (51) are arranged at intervals along the length direction of the pull rope (5).

8. The production equipment of a high-purity chloroethylene carbonate according to claim 7, characterized in that: A clamping convex circle (422) is provided on the side of the inserting cylinder (42) far away from the mounting disc (41). A clamping ring (32) is provided at the opening of the non-woven fabric (2), and the clamping ring (32) is clamped on the clamping convex circle (422).

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