A high-efficiency VDF synthesis device based on a micro-channel reactor

Abstract

The utility model discloses a VDF high -efficient synthetic device based on micro -channel reactor, include: micro -channel reactor, set up on the feed pipe of micro -channel reactor, flowmeter, set up on the feed pipe of micro -channel reactor, feed adjusting valve, PLC controller, its data input end is connected with the data output of flowmeter, and its start -stop control part is connected with the start -stop control end of feed adjusting valve, the utility model discloses from safety, process, equipment three aspects innovation. On the safety, adopt pressure -resistant explosion -proof micro -channel reactor, and the pressure monitoring, emptying and feed cut -out valve of interlocking with PLC controller, on the process, utilize micro -channel high -efficient mass transfer heat transfer, borrow flowmeter and feed adjusting valve and improve 40%, and the raw material consumption is reduced 18% and continuous production, on the equipment, design modularization micro -channel unit, and make micro -channel. The quality of preparation product is stable, and the molecular weight distribution is narrow, is applicable to the field such as lithium battery separator, and has the advantages of safety, high -efficient etc.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment for synthesizing fluorine-containing compounds, and in particular to a high-efficiency VDF synthesis device based on a microchannel reactor. Background Technology

[0002] In the current field of VDF synthesis technology, traditional processes have a series of prominent problems. Traditional reaction devices mostly use large-scale batch reactors, which have poor mass and heat transfer efficiency, resulting in uneven mixing of reactants and difficulty in dissipating reaction heat in a timely manner, easily leading to local overheating. This not only limits reaction efficiency but also triggers a large number of side reactions, causing raw material waste and keeping production costs high.

[0003] Meanwhile, traditional reactors are severely inadequate in terms of safety, lacking effective pressure-resistant and explosion-proof structures and emergency mechanisms to cope with sudden pressure changes. In the event of abnormal operating conditions, such as overpressure, explosions and leaks are highly likely, posing a significant threat to the lives and health of operators. Furthermore, traditional processes are mostly intermittent, making it difficult to achieve continuous and stable production flows. This not only hinders the expansion of production scale but also leads to significant fluctuations in product quality and a wide molecular weight distribution, failing to meet the stringent requirements of fields with demanding polymer performance, such as lithium-ion battery separators.

[0004] Furthermore, the structural design of traditional equipment is not conducive to rapid maintenance and repair, the disassembly of reaction components is cumbersome, the microchannel manufacturing precision is low, and material residue and blockage problems occur frequently, seriously interfering with the continuity and stability of production. Utility Model Content

[0005] To address the aforementioned technical problems, this invention provides a high-efficiency VDF synthesis device based on a microchannel reactor.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A high-efficiency VDF synthesis device based on a microchannel reactor, comprising: Microchannel reactor; A flow meter is installed on the feed pipe of the microchannel reactor; A feed regulating valve is installed on the feed pipe of the microchannel reactor; The PLC controller's data input terminal is connected to the flow meter's data output terminal, and its start / stop control section is connected to the start / stop control terminal of the feed regulating valve.

[0007] This utility model also includes: A feed shut-off valve is installed on the feed pipe of the microchannel reactor; A pressure transmitter is installed on the pipeline inside the microchannel reactor; A vent shut-off valve is installed on the vent pipe of the microchannel reactor; Specifically, the start / stop control terminal of the feed shut-off valve is connected to the start / stop control section of the PLC controller; the data output terminal of the pressure transmitter is connected to the data input terminal of the PLC controller; and the start / stop control terminal of the vent shut-off valve is connected to the start / stop control section of the PLC controller.

[0008] The microchannel reactor is equipped with a heating device.

[0009] The microchannel reactor consists of several microchannel reaction units, which are divided into two paths connected in parallel. Each path consists of several microchannel reaction units connected in series.

[0010] The beneficial effects of this utility model are: 1. This utility model innovates in three aspects: safety, process, and equipment. In terms of safety, it adopts a pressure-resistant and explosion-proof microchannel reactor, equipped with pressure monitoring, venting, and feed shut-off valves interlocked with a PLC controller. In terms of process, it utilizes the high-efficiency mass and heat transfer of microchannels, improving efficiency by 40% and reducing raw material consumption by 18% through flow meters and feed regulating valves, while also enabling continuous production. In terms of equipment, it designs modular microchannel units and precisely manufactures microchannels. The prepared product has stable quality and a narrow molecular weight distribution, suitable for fields such as lithium battery separators, and possesses advantages such as safety, high efficiency, and high quality, making it highly valuable for industrial applications.

[0011] 2. This utility model employs a pressure-resistant and explosion-proof microchannel reactor. Its material possesses excellent chemical stability, and the system is equipped with a pressure transmitter, a vent shut-off valve, and a feed shut-off valve. These valves are interlocked with a PLC controller to ensure safe and controllable reaction under abnormal operating conditions. Utilizing the efficient mass and heat transfer characteristics of the microchannel reactor, the mixing and residence time of the reactants are precisely controlled by a flow meter and a feed regulating valve, increasing reaction efficiency by 40%, reducing raw material consumption by 18%, and enabling continuous production, facilitating process scale-up. The modular design of the microchannel reaction unit facilitates assembly, disassembly, and maintenance. Furthermore, precision machining technology is used to manufacture the microchannels, ensuring dimensional accuracy and surface finish, reducing the risk of material residue and blockage.

[0012] 3. The pressure transmitter of this invention monitors the internal pressure of the reactor in real time and transmits the pressure data to the PLC controller via a signal transmission route. When the pressure exceeds a preset safety threshold, the PLC controller controls the venting shut-off valve to automatically open and release pressure. 4. The feed shut-off valve of this utility model is interlocked with the PLC controller. When abnormal high pressure or other dangerous signals are detected, the PLC controller controls it to immediately cut off the material inflow channel.

[0013] 5. This invention fully leverages the unique high-efficiency mass and heat transfer potential of microchannel reactors. Through ingenious design of the microchannel structure and fluid dynamics, and with the aid of flow meters and feed regulating valves, the mixing ratio and residence time of the reactants are precisely controlled. Repeated and rigorous experimental verification has shown that this process can significantly increase reaction efficiency by 40% compared to traditional processes, allowing raw materials to participate more fully in the reaction and effectively reducing raw material consumption by up to 18%.

[0014] 6. This invention innovatively realizes a continuous production mode, breaking through the constraints of traditional intermittent production. Through the rational planning of the material conveying system and the connection with the reaction process, combined with the ingenious combination of microchannel modules, stable and continuous product output is achieved. Furthermore, during process scale-up, simply increasing the number of microchannel reactor modules by a certain proportion easily expands the production scale, greatly enhancing production flexibility and scalability. In this process, the heating device provides a precise and stable temperature environment for the reaction, facilitating its efficient advancement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0017] like Figure 1 As shown, a high-efficiency VDF synthesis device based on a microchannel reactor includes: a microchannel reactor 1; a flow meter 4 installed on the feed pipe of the microchannel reactor 1; a feed regulating valve 5 installed on the feed pipe of the microchannel reactor 1; and a PLC controller 2, whose data input terminal is connected to the data output terminal of the flow meter 4, and whose start / stop control section is connected to the start / stop control section of the feed regulating valve 5. This invention also includes: a feed shut-off valve 6 installed on the feed pipe of the microchannel reactor 1; a pressure transmitter 8 installed on a pipeline inside the microchannel reactor 1; and a vent shut-off valve 3 installed on the vent pipe of the microchannel reactor 1. The start / stop control section of the feed shut-off valve 6 is connected to the start / stop control section of the PLC controller 2; the data output terminal of the pressure transmitter 8 is connected to the data input terminal of the PLC controller 2; and the start / stop control section of the vent shut-off valve 3 is connected to the start / stop control section of the PLC controller 2. A heating device 7 is installed inside the microchannel reactor 1. The microchannel reactor 1 consists of several microchannel reaction units, which are divided into two paths connected in parallel. Each path consists of several microchannel reaction units connected in series.

[0018] When using this utility model: 1. Equipment Preparation Stage: First, based on process requirements, select an appropriate number of microchannel reaction units and assemble them using standardized interfaces to construct a complete microchannel reactor 1, ensuring tight connections between modules and no risk of leakage. Simultaneously, install the heating device 7 and adjust it to the predetermined temperature parameters. Connect the feed and discharge pipes, ensuring unobstructed flow. Install the feed shut-off valve 6, feed regulating valve 5, flow meter 4, and pressure transmitter 8, calibrating the pressure transmitter 8 to the preset safe pressure value. Debug the interlocking function between each valve and the PLC controller 2 to ensure smooth signal transmission and timely and accurate response from each component. Check the signal transmission route connections for normal operation, ensuring unimpeded information exchange throughout the system, and making thorough preparations for the subsequent introduction of reactants and the export of products. 2. Reaction Start-up Stage: Start the material conveying system; materials flow into the microchannel reactor through the feed pipe. At this time, flow meter 4 monitors the material flow rate in real time and transmits the data to PLC controller 2. PLC controller 2, based on preset flow parameters, precisely adjusts the material flow rate and mixing ratio by controlling feed regulating valve 5, ensuring the material reaches its optimal initial state before entering the microchannel reactor. Heating device 7 is activated, adjusting the temperature, pressure, and other reaction conditions of the microchannel reactor to predetermined process parameters, promoting smooth reaction startup, and the material begins to react within the microchannel reaction unit. 3. Reaction Operation Stage: During the reaction process, pressure transmitter 8 continuously monitors the internal pressure of the reactor and transmits the pressure data to PLC controller 2 in real time via a signal transmission route. PLC controller 2, based on preset pressure thresholds, controls the opening and closing states of vent shut-off valve 3 and feed shut-off valve 6 in real time. For example, if the pressure approaches the overpressure threshold, PLC controller 2 immediately instructs vent shut-off valve 3 to open, releasing excess pressure, and simultaneously prepares to instruct feed shut-off valve 6 to cut off the feed, ensuring system safety. Meanwhile, PLC controller 2 continuously receives material flow data from flow meter 4 and dynamically adjusts feed regulating valve 5 according to the preset process curve to ensure that the mixing ratio and residence time of the reactants are always at the optimal state, thus maintaining the advantage of a stable 40% increase in reaction efficiency. Due to the continuous production mode, as the reaction continues, the generated VDF product flows continuously from the discharge pipe, and through subsequent condensation and collection processes, the product is initially collected. 4. Equipment Maintenance Stage: Regular maintenance and inspections of the microchannel reactor are conducted. Specialized testing tools are used to randomly inspect the dimensional accuracy and surface finish of the microchannels. If material residue or slight blockage is found, the microchannels are cleaned using mild cleaning agents and specific cleaning processes to ensure unobstructed flow. At regular intervals, the modular microchannel reaction units are disassembled and inspected to check the sealing of connection interfaces and the wear of internal components. Problematic components or units are replaced promptly to ensure the long-term stable operation of the entire reaction apparatus.

[0019] This product boasts four major advantages: top-level safety protection, superior process efficiency, convenient maintenance, and high-end product quality. It utilizes pressure-resistant and explosion-proof design and PLC control to ensure safety, efficient mass and heat transfer to improve efficiency and reduce consumption, modular design for easy maintenance, and precision microchannels to ensure material flow. It produces high-quality VDF products with narrow molecular weight distribution, comprehensively improving production efficiency and product quality, reducing risks and costs, and enhancing market competitiveness.

[0020] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A high-efficiency VDF synthesis device based on a microchannel reactor, characterized in that, include: Microchannel reactor (1); A flow meter (4) is installed on the feed pipe of the microchannel reactor (1); A feed regulating valve (5) is installed on the feed pipe of the microchannel reactor (1); The PLC controller (2) has its data input terminal connected to the data output terminal of the flow meter (4), and its start / stop control section is connected to the start / stop control terminal of the feed regulating valve (5).

2. The VDF high-efficiency synthesis device based on a microchannel reactor according to claim 1, characterized in that, Also includes: A feed shut-off valve (6) is installed on the feed pipe of the microchannel reactor (1); A pressure transmitter (8) is installed on the pipeline inside the microchannel reactor (1); A vent shut-off valve (3) is installed on the vent pipe of the microchannel reactor (1); Among them, the start / stop control terminal of the feed shut-off valve (6) is connected to the start / stop control section of the PLC controller (2); the data output terminal of the pressure transmitter (8) is connected to the data input terminal of the PLC controller (2); and the start / stop control terminal of the vent shut-off valve (3) is connected to the start / stop control section of the PLC controller (2).

3. The VDF high-efficiency synthesis device based on a microchannel reactor according to claim 1, characterized in that, The microchannel reactor (1) is equipped with a heating device (7).

4. The VDF high-efficiency synthesis device based on a microchannel reactor according to claim 1, characterized in that, The microchannel reactor (1) consists of several microchannel reaction units and is divided into two paths, which are connected in parallel. Each path consists of several microchannel reaction units connected in series.

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