Chloro ethylene carbonate preparation device of photocatalytic continuous flow reactor
By combining the inner cylinder and spiral plate design of the photocatalytic continuous flow reactor with the extraction components, the problems of slow reaction rate and low product purity were solved, achieving efficient preparation of chloroethylene carbonate and ensuring uniform mixing of reactants and effective separation of byproducts.
Patent Information
- Application Number
- CN202520387130.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-03-07
AI Technical Summary
Existing photocatalytic reactors suffer from slow reaction rates, low catalyst-reactant contact efficiency, and low product purity. In particular, during the preparation of chloroethylene carbonate, uneven deposition and mixing of reactants make it difficult to separate byproducts.
The photocatalytic continuous flow reactor utilizes a rotating inner cylinder and spiral plate design to achieve continuous flow and uniform mixing of reactants. Combined with an extraction component, it prevents byproduct deposition, and the scraper and discharge structure ensure the separation of reactants and byproducts, thereby improving product purity.
It significantly improves reaction efficiency and product purity, ensuring the high efficiency, greenness and sustainability of the preparation process of chloroethylene carbonate, avoiding the accumulation and deposition of by-products, and improving the contact efficiency between the catalyst and the reactants.
Smart Images
Figure CN223717087U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to chloroethylene carbonate preparation technical field especially relates to a kind of chloroethylene carbonate preparation devices of photocatalytic continuous flow reactor. BACKGROUND
[0002] Chloroethylene carbonate (CEC) is an important fine chemicals, has wide application in lithium battery electrolyte, medicine and organic synthesis, generally when preparing chloroethylene carbonate, first ethylene carbonate, it is heated to 45-75 ℃ and keeps warm to obtain liquid ethylene carbonate, then liquid ethylene carbonate and liquid chlorine are transported to three-way joint by metering pump and needle valve respectively to mix, then the liquid ethylene carbonate and liquid chlorine after mixing are placed in photocatalytic reactor, under ultraviolet irradiation, reaction generates chloroethylene carbonate.
[0003] In prior art, existing photocatalytic reactor has some defects in actual application: first, traditional reactor usually uses static reaction mode for catalysis, so that reactants are prone to deposit or distribute unevenly in reaction process, thereby affecting the contact efficiency of catalyst and reactants, and further reducing reaction rate and product purity, secondly, in the process of preparing chloroethylene carbonate, reactor will produce by-products due to long time use, and due to uneven mixing of materials in reactor and accumulation of by-products at bottom, unreacted substances and by-products are difficult to separate in time, so that by-products will be output together with product when outputting chloroethylene carbonate, thereby affecting the purity of final product. SUMMARY
[0004] Therefore, the utility model aims at providing a kind of chloroethylene carbonate preparation devices of photocatalytic continuous flow reactor to solve the problems of slow reaction rate and low product purity of existing reactor.
[0005] To achieve the above purpose, the utility model provides a kind of chloroethylene carbonate preparation devices of photocatalytic continuous flow reactor, including reaction cylinder, the outside fixed connection of reaction cylinder has fixed frame, the top of reaction cylinder is installed with top cover, the top of top cover is connected with feed pipe, the inside of reaction cylinder is provided with reaction assembly for improving reaction efficiency and product purity, the reaction assembly includes inner cylinder rotationally connected in the inside of reaction cylinder, the outside and bottom of inner cylinder are all provided with a plurality of holes, the outside fixed connection of inner cylinder has first spiral plate, the inside fixed connection of inner cylinder has second spiral plate, the bottom in the inside of reaction cylinder is provided with separation assembly for preventing reactant deposition and promoting reactant and by-product to be separated respectively, reaction assembly and separation assembly are used in cooperation, so that the flowability of reactant in the inside of reaction cylinder is continuously generated, reaction efficiency is improved, and by-product attachment is reduced.
[0006] Preferably, the top of the inner cylinder is rotationally connected with the top of the top cover, a support is fixedly connected to the top of the top cover, a UV lamp is fixedly connected to one side of the top end of the support, the bottom end of the UV lamp penetrates the inside of the top cover and is located at the middle part of the inside of the inner cylinder, and the fixing direction of the first spiral plate on the outside of the inner cylinder is opposite to the fixing direction of the second spiral plate on the inside of the inner cylinder.
[0007] Preferably, the inner cylinder is fixedly connected with a driven wheel outside the top of the top cover, a U-shaped frame is fixedly connected to one side of the top of the top cover, a driving wheel is rotationally connected to the inside of one end of the U-shaped frame through a shaft, a motor is fixedly connected to the top of one end of the U-shaped frame, the output end of the motor is fixedly connected with the top of the driving wheel through the top of the U-shaped frame, and one side of the driving wheel is in transmission connection with one side of the driven wheel through a belt.
[0008] Preferably, the inside of the top of the reaction cylinder is rotationally connected with a first connecting ring, a plurality of first scrapers are equidistantly fixedly connected to the bottom of the first connecting ring in a ring shape, one side of the first scrapers is in contact with the inner wall of the reaction cylinder, the bottom end of the plurality of first scrapers is fixedly connected with a second connecting ring, and the inside of the second connecting ring is fixedly connected with the outside of the bottom of the inner cylinder.
[0009] Preferably, the bottom of the reaction cylinder is communicated with a discharge pipe, the disengagement assembly comprises a liquid outlet pipe connected to the inside of the discharge pipe, the input end of the liquid outlet pipe is fixedly connected with a ring-shaped pipe penetrating the bottom of the reaction cylinder, a plurality of holes are formed in the top of the ring-shaped pipe, the output end of the liquid outlet pipe is provided with a second control valve mounted through the side wall of the discharge pipe, and the output end of the discharge pipe is provided with a first control valve.
[0010] Preferably, the bottom of the inside of the reaction cylinder is fixedly connected with a fixing ring, a plurality of connecting plates are fixedly connected to the inner wall of the fixing ring, the one end of the connecting plates away from the fixing ring is fixedly connected with a center ring, and the inside of the center ring is fixedly connected with the outside of the middle part of the liquid outlet pipe.
[0011] Preferably, the outside of the fixing ring is rotationally clamped with a rotating ring, two second scrapers are fixedly connected to the outside of the rotating ring in a symmetrical manner, the bottom of the second scrapers is in contact with the bottom of the inside of the reaction cylinder, and the top of the two second scrapers is fixedly connected with the bottom of the inner cylinder.
[0012] Preferably, the outside of the reaction cylinder is fixedly connected with an outer cylinder, the top of one side of the outer cylinder is communicated with a water inlet pipe, and the bottom of the other side of the outer cylinder is communicated with a water outlet pipe.
[0013] The utility model discloses the beneficial effect that:
[0014] 1. The reaction components and the separation components are set, the continuous flow and uniform mixing of the reactants can be realized, thereby greatly improving the reaction efficiency, the rotation of the spiral plate and the inner cylinder of the reaction component ensures the sufficient contact of the reactants and the catalyst, and the separation component effectively prevents the accumulation of by-products and ensures the separation of the reactants and by-products, the cooperation of the two not only maintains the uniformity of the reactants and avoids the deposition of by-products, but also maintains the stability and continuity of the reaction process, thereby significantly improving the purity and yield of the product and ensuring the high efficiency, greenness and sustainability of the preparation process of chloroethylene carbonate.
[0015] The reaction efficiency and product purity of the reactants are improved by the reaction component, the reactants continuously flow and uniformly mix in the reactor through the rotation of the inner cylinder and the design of the spiral plate, which effectively avoids the deposition of the reactants and the attachment of by-products, thereby improving the contact efficiency of the catalyst and the reactants, accelerating the reaction rate, and improving the purity of the product, the cooperation of the inner cylinder and the spiral plate can optimize the contact of the reactants and the photocatalyst, so that the reaction is more complete and the problem of incomplete reaction or by-product generation is reduced.
[0016] The deposition of the reactants at the bottom of the reaction cylinder can be avoided and the reactants and by-products can be separated by the separation component, the second scraper is set to rotate simultaneously with the inner cylinder when the inner cylinder rotates, the scraper is disturbed to avoid the accumulation of the reactants, and the unreacted substances, by-products and reactants can be effectively separated from the bottom of the reactor through the structures such as the discharge pipe, the liquid outlet pipe and the annular pipe arranged at the bottom of the reaction cylinder, thereby improving the purity of the product. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.
[0018] Figure 1 It is a whole three-dimensional structure schematic diagram of the present application;
[0019] Figure 2 It is a side view sectional structure schematic diagram of the reaction cylinder of the present application;
[0020] Figure 3 It is a whole three-dimensional structure schematic diagram of the present application; Figure 2 It is an enlarged structure schematic diagram of A in the present application;
[0021] Figure 4The utility model discloses a first spiral plate and first scraper enlarged structure schematic view.
[0022] Figure 5 The utility model discloses an inner cylinder and spiral plate enlarged structure schematic view.
[0023] Figure 6 The utility model discloses a reaction cylinder bottom section structure schematic view.
[0024] Marked as in the drawing:
[0025] 1, reaction cylinder;2, fixed frame;3, top cover;4, discharge pipe;5, liquid outlet pipe;6, first control valve;7, second control valve;8, fixed ring;9, center ring;10, swivel ring;11, connecting plate;12, outer cylinder;13, water inlet pipe;14, water outlet pipe;15, inner cylinder;16, first spiral plate;17, second spiral plate;18, first connecting ring;19, first scraper;20, second connecting ring;21, second scraper;22, support;23, ultraviolet lamp;24, U-shaped frame;25, feed pipe;26, driving wheel;27, motor;28, driven wheel;29, annular pipe. DETAILED DESCRIPTION
[0026] In order to make the utility model's purpose, technical scheme and advantage more clearly obvious, following combining specific embodiment, this utility model is further detailed.
[0027] It is to be noted that, unless otherwise defined, the technical terms or scientific terms used in the utility model should be understood as the usual meaning of the person skilled in the art to which the utility model belongs. The "first", "second" and similar words used in the utility model do not represent any order, quantity or importance, but only distinguish different components. "Include" or "contain" and similar words mean that the elements or objects before the word cover the elements or objects listed after the word and their equivalents, and do not exclude other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, when the absolute position of the described object changes, the relative positional relationship can also change accordingly.
[0028] As the utility model Figures 1 to 6The illustrated chloroethylene carbonate preparation device providing a photocatalytic continuous flow reactor comprises a reaction cylinder 1, a fixed frame 2 fixedly connected outside the reaction cylinder 1, a top cover 3 installed at the top of the reaction cylinder 1, a feed pipe 25 communicated at the top of the top cover 3, a reaction assembly arranged inside the reaction cylinder 1 for improving reaction efficiency and product purity, the reaction assembly comprising an inner cylinder 15 rotatably connected inside the reaction cylinder 1, a plurality of holes formed in the outer portion and the bottom of the inner cylinder 15, a first spiral plate 16 fixedly connected outside the inner cylinder 15, a second spiral plate 17 fixedly connected inside the inner cylinder 15, an extraction assembly arranged at the bottom of the reaction cylinder 1 for preventing the deposition of reactants and promoting the separation of reactants and by-products, the reaction assembly and the extraction assembly being used in cooperation to make the reactants in the reaction cylinder 1 continuously flow, improve the reaction efficiency, and reduce the attachment of by-products;
[0029] The reaction assembly and the extraction assembly can realize the continuous flow and uniform mixing of the reactants, thereby greatly improving the reaction efficiency. The reaction assembly ensures the sufficient contact between the reactants and the catalyst through the rotation of the spiral plate and the inner cylinder 15, while the extraction assembly effectively prevents the accumulation of by-products and ensures the separation of the reactants and by-products. The cooperation of the two not only maintains the uniformity of the reactants and avoids the deposition of by-products, but also maintains the stability and continuity of the reaction process, thereby significantly improving the purity and yield of the product and ensuring the efficiency, greenness and sustainability of the chloroethylene carbonate preparation process.
[0030] As shown in Figures 1 to 5 the top of the inner cylinder 15 is rotatably connected with the top of the top cover 3, the top cover 3 is fixedly connected with a bracket 22, one side of the top end of the bracket 22 is fixedly connected with a ultraviolet lamp 23, the bottom end of the ultraviolet lamp 23 penetrates through the inside of the top cover 3 and is located in the middle of the inner cylinder 15, the fixed direction of the first spiral plate 16 outside the inner cylinder 15 is opposite to the fixed direction of the second spiral plate 17 inside the inner cylinder 15, the inner cylinder 15 is fixedly connected with a driven wheel 28 outside the top of the top cover 3, one side of the top of the top cover 3 is fixedly connected with a U-shaped bracket 24, the inside of one end of the U-shaped bracket 24 is rotatably connected with a driving wheel 26 through a shaft, the top of one end of the U-shaped bracket 24 is fixedly connected with a motor 27, the output end of the motor 27 penetrates through the top of the U-shaped bracket 24 and is fixedly connected with the top of the driving wheel 26, one side of the driving wheel 26 is drivingly connected with one side of the driven wheel 28 through a belt;
[0031] The reaction efficiency of the reactants and the purity of the product are improved by the reaction assembly, the reactants continuously flow and are uniformly mixed in the reactor through the rotation of the inner cylinder 15 and the design of the spiral plates, which effectively avoids the deposition of the reactants and the attachment of by-products, thereby improving the contact efficiency of the catalyst and the reactants, accelerating the reaction rate, and improving the purity of the product. The cooperation of the inner cylinder 15 and the spiral plates can optimize the contact of the reactants and the photocatalyst, making the reaction more complete and reducing the problem of incomplete reaction or by-product formation. In use, the reactants and catalyst are first input into the inside of the reaction cylinder 1 through the feed pipe 25, then the motor 27 is started to drive the driven wheel 28 to rotate through the belt, and the driven wheel 28 drives the inner cylinder 15, the first spiral plate 16 and the second spiral plate 17 to rotate, thereby causing the reactants inside the reaction cylinder 1 to generate turbulence, so that the reactants and catalysts react fully. At the same time, the combination of the inner cylinder 15 and the spiral plates ensures the continuous flow of the reactants and promotes the uniform contact of the reactants and the catalysts, thereby improving the reaction efficiency. Combined with the irradiation of the ultraviolet lamp 23, the reactants are caused to react to generate chloroethylene carbonate under the heat irradiation of ultraviolet light, and the ultraviolet lamp 23 is arranged in the middle of the inner cylinder 15 to avoid blocking the rotation of the inner cylinder 15. At the same time, the design of the multiple holes on the inner cylinder 15 and the external spiral plates can effectively enhance the mixing of the materials, avoid the deposition of the materials, ensure the full contact of the reactants and the catalysts, and enable the ultraviolet lamp 23 to fully irradiate the reactants.
[0032] As shown in Figures 1 to 4 , the first connecting ring 18 is rotatably connected to the inside of the top of the reaction cylinder 1, the bottom of the first connecting ring 18 is annularly and equidistantly fixedly connected with a plurality of first scrapers 19, one side of the first scraper 19 is in contact with the inner wall of the reaction cylinder 1, the bottom end of the plurality of first scrapers 19 is fixedly connected with a second connecting ring 20, the inside of the second connecting ring 20 is fixedly connected with the outside of the bottom of the inner cylinder 15.
[0033] By arranging the first scraper 19, when the inner cylinder 15 rotates, the second connecting ring 20 rotates with the plurality of first scrapers 19, thereby causing the first scraper 19 to scrape off the attachments on the inner wall of the reaction cylinder 1 and the unreacted substances, thereby keeping the inner wall of the reaction cylinder 1 clean and promoting the full reaction of the reactants inside the reaction cylinder 1.
[0034] As shown in Figures 2 to 6 , the bottom of the reaction cylinder 1 is communicated with a discharge pipe 4, the extraction assembly includes a liquid outlet pipe 5 connected to the inside of the discharge pipe 4, the input end of the liquid outlet pipe 5 is fixedly connected with an annular pipe 29 penetrating through the bottom of the reaction cylinder 1, a plurality of holes are formed in the top of the annular pipe 29, the output end of the liquid outlet pipe 5 is installed with a second control valve 7 penetrating through the side wall of the discharge pipe 4, and the output end of the discharge pipe 4 is installed with a first control valve 6.
[0035] By setting the separation assembly, the deposition of reactants at the bottom of the reaction cylinder 1 can be avoided, and the reactants and by-products can be separated. By setting the second scraper 21, when the inner cylinder 15 rotates, the second scraper 21 also rotates, which promotes the scraper to disturb the unreacted deposits at the bottom, avoiding the accumulation of reactants. At the same time, by setting the discharge pipe 4, the liquid outlet pipe 5 and the annular pipe 29 at the bottom of the reaction cylinder 1, the unreacted substances, by-products and reactants can be effectively separated from the bottom of the reactor, thereby improving the purity of the product. When the reactants in the reaction cylinder 1 are fully reacted, the first control valve 6 is closed and the second control valve 7 is opened to extract the reactants from the inside of the reaction cylinder 1. During extraction, the by-products in the reaction cylinder 1 can be filtered through the multiple holes at the top of the annular pipe 29, and then the reactants with high purity can be extracted from the inside of the annular pipe 29, thereby improving the purity of the product.
[0036] As shown in Figure 2 , Figure 3 , Figure 4 and Figure 6 , the bottom of the reaction cylinder 1 is fixedly connected with a fixed ring 8, the inner wall of the fixed ring 8 is fixedly connected with a plurality of connecting plates 11, the end of the connecting plate 11 away from the fixed ring 8 is fixedly connected with a center ring 9, the inside of the center ring 9 is fixedly connected with the outside of the middle part of the liquid outlet pipe 5, the outside of the fixed ring 8 is rotatably connected with a rotating ring 10, the outside of the rotating ring 10 is fixedly connected with two second scrapers 21, the bottom of the second scraper 21 is in contact with the bottom of the inside of the reaction cylinder 1, and the top of the two second scrapers 21 is fixedly connected with the bottom of the inner cylinder 15.
[0037] By setting the connecting plate 11, the fixed ring 8 and the center ring 9, the liquid outlet pipe 5 can be fixed, and at the same time, the by-products can be removed from the inside of the discharge pipe 4 during the later cleaning. When cleaning, the first control valve 6 is opened after the reactants are extracted, and the second control valve 7 is closed, which promotes the by-products to move out of the inside of the fixed ring 8 and be discharged from the inside of the discharge pipe 4, thereby facilitating the use of the reaction cylinder 1 next time. At the same time, by setting the second scraper 21 and the rotating ring 10, when the inner cylinder 15 rotates, the second scraper 21 is fixedly connected with the bottom of the inner cylinder 15, and the second scraper 21 will rotate at the bottom of the reaction cylinder 1, thereby promoting the second scraper 21 to stir the reactants at the bottom of the reaction cylinder 1, thereby avoiding the problem of reactant deposition. At the same time, the second scraper 21 can also play a role in scraping during the later cleaning of by-products, which can keep the bottom of the reaction cylinder 1 clean and facilitate the use next time.
[0038] As shown in Figure 1 and Figure 2As shown, the outer fixed connection of the reaction cylinder 1 has an outer cylinder 12, the top of one side of the outer cylinder 12 is communicated with a water inlet pipe 13, and the bottom of the other side of the outer cylinder 12 is communicated with a water outlet pipe 14;
[0039] By setting the outer cylinder 12, water can be added to the inside of the outer cylinder 12 from the water inlet pipe 13, which can act as a heat exchange medium, play a buffering role, help maintain the temperature stability in the reaction cylinder 1, water has a high specific heat capacity, can absorb the heat generated in the reaction process, and take away the excessive heat through the circulation of water, prevent the temperature in the reaction kettle from being too high.
[0040] Those skilled in the art should understand that the above discussion of any embodiment is only exemplary and is not intended to suggest that the scope (including claims) of the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in detail for the sake of brevity.
[0041] The present application is intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations, alternatives and equivalents should be taken as falling within the scope of the present application.
Claims
1. A chloroethylene carbonate preparation device of a photocatalytic continuous flow reactor, comprising a reaction cylinder (1), the outer part of the reaction cylinder (1) is fixedly connected with a fixing frame (2), the top of the reaction cylinder (1) is provided with a top cover (3), and the top of the top cover (3) is connected with a feeding pipe (25), characterized in that, The inside of the reaction cylinder (1) is provided with a reaction assembly for improving reaction efficiency and product purity, which comprises an inner cylinder (15) rotationally connected to the inside of the reaction cylinder (1), the outer part and the bottom of the inner cylinder (15) are provided with a plurality of holes, the outer part of the inner cylinder (15) is fixedly connected with a first spiral plate (16), and the inner part of the inner cylinder (15) is fixedly connected with a second spiral plate (17); The bottom of the inside of the reaction cylinder (1) is provided with an isolation assembly for preventing the deposition of reactants and promoting the separation of reactants and by-products; The reaction assembly and the isolation assembly are used in cooperation to make the reactants in the inside of the reaction cylinder (1) continuously flow, improve the reaction efficiency, and reduce the attachment of by-products.
2. The apparatus for preparing chloroethylene carbonate of the photocatalytic continuous flow reactor according to claim 1, characterized in that, The top of the inner cylinder (15) is rotationally connected with the top of the top cover (3), the top of the top cover (3) is fixedly connected with a support (22), one side of the top end of the support (22) is fixedly connected with a ultraviolet lamp (23), the bottom end of the ultraviolet lamp (23) penetrates through the inside of the top cover (3) and is located in the middle part of the inside of the inner cylinder (15), and the fixed direction of the first spiral plate (16) on the outside of the inner cylinder (15) is opposite to the fixed direction of the second spiral plate (17) on the inside of the inner cylinder (15).
3. The apparatus for the preparation of chloroethylene carbonate in a photocatalytic continuous flow reactor according to claim 2, characterized in that, The inside of the top of the top cover (3) is fixedly connected with a driven wheel (28), one side of the top of the top cover (3) is fixedly connected with a U-shaped frame (24), the inside of one end of the U-shaped frame (24) is rotationally connected with a driving wheel (26) through a shaft, the top of one end of the U-shaped frame (24) is fixedly connected with a motor (27), the output end of the motor (27) penetrates through the top of the U-shaped frame (24) and is fixedly connected with the top of the driving wheel (26), and one side of the driving wheel (26) is in transmission connection with one side of the driven wheel (28) through a belt.
4. The apparatus for preparing chloroethylene carbonate of the photocatalytic continuous flow reactor according to claim 2, characterized in that, The inside of the top of the reaction cylinder (1) is rotationally connected with a first connecting ring (18), the bottom of the first connecting ring (18) is annularly and equidistantly fixedly connected with a plurality of first scrapers (19), one side of the first scraper (19) is in contact with the inner wall of the reaction cylinder (1), the bottom end of the first scraper (19) is fixedly connected with a second connecting ring (20), and the inside of the second connecting ring (20) is fixedly connected with the outside of the bottom of the inner cylinder (15).
5. The apparatus for preparing chloroethylene carbonate of the photocatalytic continuous flow reactor according to claim 1, characterized in that, The bottom of the reaction cylinder (1) is communicated with a discharge pipe (4), the isolation assembly comprises a liquid outlet pipe (5) connected to the inside of the discharge pipe (4), the input end of the liquid outlet pipe (5) is fixedly connected with an annular pipe (29) penetrating through the bottom of the reaction cylinder (1), a plurality of holes are formed in the top of the annular pipe (29), the output end of the liquid outlet pipe (5) is mounted with a second control valve (7) penetrating through the side wall of the discharge pipe (4), and the output end of the discharge pipe (4) is mounted with a first control valve (6).
6. The apparatus for the preparation of chloroethylene carbonate in a photocatalytic continuous flow reactor according to claim 5, characterized in that, The bottom of the inside of the reaction cylinder (1) is fixedly connected with a fixed ring (8), the inner wall of the fixed ring (8) is fixedly connected with a plurality of connecting plates (11), one end of the connecting plate (11) away from the fixed ring (8) is fixedly connected with a center ring (9), and the inside of the center ring (9) is fixedly connected with the outside of the middle part of the liquid outlet pipe (5).
7. The apparatus for the preparation of chloroethylene carbonate in a photocatalytic continuous flow reactor according to claim 6, characterized in that, The outside of the fixed ring (8) is rotatably clamped with a rotating ring (10), the outside of the rotating ring (10) is fixedly connected with two second scrapers (21) in a symmetrical manner, the bottom of the second scraper (21) is in contact with the bottom of the inside of the reaction cylinder (1), and the top of the two second scrapers (21) is fixedly connected with the bottom of the inner cylinder (15).
8. The apparatus for preparing chloroethylene carbonate of the photocatalytic continuous flow reactor according to claim 1, characterized in that, The outside of the reaction cylinder (1) is fixedly connected with an outer cylinder (12), the top of one side of the outer cylinder (12) is communicated with a water inlet pipe (13), and the bottom of the other side of the outer cylinder (12) is communicated with a water outlet pipe (14).