A method and system for the production of diisopropyl peroxydicarbonate based on a microchannel reactor

Abstract

The present application belongs to the technical field of organic synthesis, and particularly relates to a method and system for preparing diisopropyl peroxydicarbonate based on a micro-channel reactor. The present application uses a heart-shaped micro-channel reactor, pumps raw material potassium hydroxide solution and hydrogen peroxide solution from the inlet of the first piece, and pumps raw material isopropyl chloroformate from the inlet of the fourth piece, thereby realizing safe production in the preparation process of diisopropyl peroxydicarbonate, stable operation of the reaction, a substantial reduction in reaction time, accurate control of reaction temperature by a high-low temperature all-in-one machine, timely removal of heat, reduction in side reactions, a substantial increase in product yield, and finally obtaining a product with a yield of 99.5%, realizing source reduction in the preparation process, a reduction in energy consumption and raw material consumption per unit product, and fully meeting the strategic orientation of national green chemical industry and clean production. Meanwhile, the method of the present application can significantly reduce production cost, fill in the technical gap, enhance market competitiveness, and can be widely promoted.

Description

Technical Field

[0001] This invention belongs to the field of organic synthesis technology, specifically relating to a method and system for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor. Background Technology

[0002] Dicarbon peroxides are commonly used initiators in free radical polymerization reactions due to their low decomposition temperature, enabling effective polymerization initiation at relatively low temperatures. They play a crucial role in the synthesis of polymers such as polyvinylidene fluoride (PVDF). PVDF, a high-performance fluoropolymer, is widely used in high-end fields such as aerospace, lithium batteries, and biomedicine due to its excellent chemical resistance, high-temperature resistance, mechanical strength, and unique piezoelectric and thermoelectric properties. However, the PVDF molecular chain structure contains abnormal head-to-head or tail-to-tail connections, which directly affects the polymer's crystallinity, leading to a lower melting point and reduced solvent resistance. Studies have shown that polymerization conditions, especially polymerization temperature, have a decisive influence on the regularity of the molecular chain. Therefore, developing a dicarbon peroxide initiator that maintains good initiation activity at low temperatures while simultaneously improving the regularity of the PVDF molecular chain structure is of significant research importance and practical application value.

[0003] Diisopropyl peroxide (IPP), a typical dicarbonate peroxide initiator, is traditionally synthesized primarily in a batch reactor. For example, CN 119350209 A discloses a method for preparing IPP, in which isopropyl chloroformate and an ester-soluble organic solvent are first added to a three-necked flask, stirred, and hydrogen peroxide solution is added. After the system cools to -5°C, sodium hydroxide solution is slowly added dropwise, with strict control of the reaction temperature and time. Finally, the product is obtained through separation, washing, and drying. This process achieves high yield and good stability through optimized reaction conditions, and the obtained product can be directly used in the preparation of polyvinylidene fluoride.

[0004] However, the aforementioned traditional batch reactor process still has many limitations in practical applications. First, dicarbonate peroxides are extremely sensitive to temperature, impact, and chemicals such as acids and alkalis, posing a high risk of explosion. Traditional batch reactors have a large liquid holdup, making them highly susceptible to safety accidents should thermal runaway or localized violent reactions occur. Second, batch reactor processes are inefficient in terms of mass and heat transfer. Temperature is difficult to control precisely and uniformly during the reaction, leading to increased side reactions and affecting product purity and consistency. Furthermore, because the reaction system is heterogeneous, the mixing effect of raw materials is limited, resulting in poor batch-to-batch stability of product quality, making it difficult to meet the requirements of high-end polymerization reactions for high purity and structural regularity of initiators.

[0005] Currently, microchannel reactors, due to their superior mass and heat transfer performance, precise residence time control, and extremely low online liquid holdup, exhibit significant safety advantages and process controllability in handling high-risk peroxide synthesis reactions. They hold promise for improving product yield and purity while effectively reducing safety risks and enabling continuous production, further meeting the requirements for initiator structural regularity and stability in the preparation of high-performance polyvinylidene fluoride. However, no existing technology utilizes microchannel continuous flow technology to synthesize diisopropyl peroxide dicarbonate.

[0006] Therefore, developing a method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor is of great industrial application value and practical significance for solving the problems of long process cycle, low yield and poor safety of existing processes. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a method and system for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor. The method uses a heart-shaped microchannel reaction device, potassium hydroxide, hydrogen peroxide, and isopropyl chloroformate as raw materials, controls the temperature below 15°C under normal pressure, and has a short reaction time and high reaction yield.

[0008] The technical solution adopted is as follows: A method and system for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor, comprising a heart-shaped microchannel reactor in an S-shape, consisting of eight plates connected in series, each plate including an inlet, and specifically including the following steps: (1) Raw materials A and B are pumped into the heart-shaped microchannel reactor from the inlet of the first piece, and raw materials A and B react first; (2) Pump raw material C into the heart-shaped microchannel reactor through the inlet of the fourth piece, so that raw material C reacts with the reaction products of raw material A and raw material B; collect the reaction liquid after the reaction. (3) Post-processing steps: the collected reaction solution is allowed to stand and separate into layers, washed and dried to obtain the product; Among them, raw material A is potassium hydroxide solution, raw material B is hydrogen peroxide solution, and raw material C is isopropyl chloroformate.

[0009] Preferably, each piece of the heart-shaped microchannel reactor further includes a heart-shaped channel, a bent channel, a pressure balancing tank, and an outlet; wherein, the inlet is connected to the pressure balancing tank and then sequentially connected to several heart-shaped channels, and at the bend, it is connected to a bent channel, which in turn is connected to the pressure balancing tank and then sequentially connected to several heart-shaped channels, and then connected to the bent channel, the pressure balancing tank, and several heart-shaped channels, until the outlet; the outlet of the previous piece is connected to the inlet of the next piece.

[0010] Preferably, the inlet includes a first inlet and a second inlet; raw materials A and B are pumped into the microchannel reactor through the first inlet and the second inlet, respectively; the outlet of the previous piece is connected to one of the inlets, and the other inlet is blocked or fed in.

[0011] Preferably, after the raw material flows into the heart-shaped channel, the flow process in the heart-shaped channel is as follows: first, it splits and flows along both sides of the heart-shaped channel, then it merges and flows into the next channel after merging at the apex of the heart-shaped channel.

[0012] Preferably, in step (1), the mass fraction of the potassium hydroxide solution is 15-20%, and the flow rate is 26-52 ml / min; the mass fraction of the hydrogen peroxide solution is 25-30%, and the flow rate is 6.77-17.8 ml / min.

[0013] Preferably, in step (2), the flow rate of isopropyl chloroformate is 12.7 to 25.4 ml / min.

[0014] Preferably, the reaction is carried out under normal pressure, and the reaction time of steps (1) and (2) is 8 to 12 minutes, and the reaction temperature is below 15°C, generally around 13°C.

[0015] Preferably, the molar ratio of isopropyl chloroformate, potassium hydroxide, and hydrogen peroxide is 1:1:0.5 to 0.65.

[0016] Preferably, the post-processing step is carried out at a low temperature below 15°C, more preferably below 10°C, and generally between 0 and 10°C.

[0017] Let stand until the liquid phase is completely separated, which takes 10 to 30 minutes; Wash 2-3 times with cold water (10-12℃); Drying is performed using freeze drying or desiccant drying.

[0018] A system for implementing the method of the present invention includes: a raw material supply unit, a reaction unit, a product collection unit, and a post-processing unit; The raw material supply unit includes: Raw material container A is used to store potassium hydroxide solution; Raw material tank B is used to store hydrogen peroxide solution; Raw material tank C is used to store isopropyl chloroformate; The high-pressure plunger pump includes a first plunger pump, a second plunger pump, and a third plunger pump, which are respectively connected to the raw material A tank, the raw material B tank, and the raw material C tank, and are used to pump raw material A, raw material B, and raw material C into the subsequent reaction unit at a set flow rate; The reaction unit includes: A heart-shaped microchannel reactor, the inlet of which is connected to the outlet of the high-pressure plunger pump, is used to allow raw materials A, B and C to react under continuous flow conditions; The high and low temperature integrated unit is connected to the heat exchange jacket of the heart-shaped microchannel reactor and is used to provide the reactor with a heat exchange medium with precise temperature control. The product collection unit is connected to the outlet of the heart-shaped microchannel reactor module and is used to receive the reaction liquid; The post-processing unit, connected to the product collection unit, is used to perform static stratification, washing, and drying on the received reaction liquid to obtain the product.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The product of the present invention, diisopropyl peroxide dicarbonate, has a low decomposition temperature (47°C) and the reaction temperature is controlled at around 13°C. The temperature can be precisely controlled by a high and low temperature integrated machine, which can remove heat in time, reduce the side reactions of the strong exothermic reaction, and improve the product yield.

[0020] (2) The method of the present invention uses a heart-shaped microchannel reactor as the core reaction unit. This structure, through the chaotic convection generated by the branching, merging, and bending of the flow channels, causes the fluid to be continuously stretched, folded, and cut, which greatly enhances the mixing effect and achieves uniform mixing at the molecular scale within milliseconds. For liquid-liquid two-phase reactions, this structure can significantly increase the phase contact area and avoid the local high concentration or side reactions caused by uneven mixing in traditional batch reactors. At the same time, the heart-shaped channel design allows the fluid to flow in a thin layer in the reactor, with a very large specific surface area (up to 10,000-50,000 m² / m³). Heat can be rapidly transferred to the heat exchange medium of the high and low temperature integrated machine through the channel wall to achieve isothermal reaction.

[0021] (3) The heart-shaped microchannel reactor used in this invention is equipped with multiple pressure balancing tanks, which are the key hubs to ensure the stable operation of the entire microchannel system. Plunger pumps (especially plunger pumps) inevitably generate small flow fluctuations or pressure pulses when transporting liquids. The pressure balancing tanks, using their slightly larger volume (relative to the microchannels) as buffer chambers, can absorb and smooth these pressure fluctuations, keeping the flow rate and pressure of the fluid entering the subsequent heart-shaped channels constant, and avoiding disturbances to reaction conditions caused by sudden pressure changes. At sharp bends in the flow channel, the fluid is prone to stagnation or eddies (dead zones), leading to excessively long local residence times, increased side reactions, or blockages. The pressure balancing tanks can eliminate or reduce dead zones through flow channel transitions and volume buffering, ensuring uniform fluid propagation.

[0022] (4) The method of this invention can significantly shorten the reaction time and significantly improve production efficiency. The heart-shaped microchannel reactor enhances mass and heat transfer, thereby greatly increasing the reaction rate and reducing the reaction time from several hours in the traditional batch reactor to several minutes (10 minutes). For the preparation of diisopropyl peroxide, this means that the problem of long cycle time in the traditional process is solved, and the yield per unit time is greatly increased. The heart-shaped microchannel reactor can be scaled up by increasing the number of modules, and the core process parameters do not need to be changed from laboratory pilot to industrial production, thus solving the problem of traditional batch reactor process.

[0023] (5) The method of the present invention significantly improves the safety level and completely reduces the risk of thermal runaway. The heart-shaped microchannel reactor has a very small liquid holding capacity (8 pieces, 80 mL). For high-risk reactions, the liquid holding capacity can be reduced by 99.99% compared with the traditional batch reactor. For the preparation of diisopropyl peroxide, it can solve the safety risks of traditional processes, effectively avoid thermal runaway, and achieve intrinsic safety.

[0024] (6) By using a heart-shaped microchannel reactor, the present invention pumps raw materials A and B into the first inlet and raw material C into the fourth inlet, thereby achieving inherently safe production, significantly shortening the reaction time, and increasing the product yield in the preparation process of diisopropyl peroxide, ultimately obtaining a product with a yield of 99.5%. This invention achieves source emission reduction, waste reduction, energy consumption reduction, and inherent safety in the preparation process of diisopropyl peroxide, which is in full compliance with the national strategic orientation of green chemical industry and clean production.

[0025] (7) The method of the present invention can significantly reduce production costs, fill technological gaps, and enhance market competitiveness. Because the method of the present invention shortens reaction time and reduces side reactions, the energy consumption and raw material consumption per unit product decrease. Continuous production can achieve automated control, safety risks are controllable, batch quality is stable, and the market competitiveness of the product is significantly improved, which can be promoted on a large scale. Attached Figure Description

[0026] Figure 1 This is a system structure diagram of the present invention.

[0027] Figure 2 This is a cross-sectional view of the heart-shaped microchannel reactor used in this invention.

[0028] In the diagram, 1-first inlet, 2-pressure balance tank, 3-heart-shaped channel, 4-bent channel, 5-second inlet, 6-outlet; 11-raw material A tank, 12-raw material B tank, 13-raw material C tank, 14-first plunger pump, 15-second plunger pump, 16-third plunger pump, 17-high and low temperature integrated unit, 18-heart-shaped microchannel reactor. Detailed Implementation

[0029] The accompanying drawings are for illustrative purposes only; it should be understood that these embodiments are for illustrating the invention only and are not intended to limit the scope of the invention. Experimental methods in the following embodiments, unless specific conditions are specified, are generally performed under conventional conditions or as recommended by the manufacturer. Unless otherwise stated, all percentages, ratios, proportions, or parts are by weight.

[0030] The technical effects of the present invention are further illustrated below with reference to specific embodiments. Unless otherwise specified, the raw materials and chemical reagents used in this invention are all obtainable through legitimate commercial channels. The standards for the chemical reagents are standard laboratory-grade, and the instruments shown in the figures employ existing conventional instruments or methods.

[0031] Example 1 like Figure 1 As shown, a system for implementing the method of the present invention includes: a raw material supply unit, a reaction unit, a product collection unit, and a post-processing unit; The raw material supply unit includes: Raw material tank A, container 11, is used to store potassium hydroxide solution; Raw material tank B, 12, is used to store hydrogen peroxide solution; Raw material tank C, 12, is used to store isopropyl chloroformate; The high-pressure plunger pump includes a first plunger pump 14, a second plunger pump 15, and a third plunger pump 16, which are respectively connected to the raw material A tank 11, the raw material B tank 12, and the raw material C tank 13, and are used to pump raw material A, raw material B and raw material C into the subsequent reaction unit at a set flow rate. The reaction unit includes: The heart-shaped microchannel reactor 18 has its inlet connected to the outlet of the high-pressure plunger pump, and is used to allow raw materials A, B and C to react under continuous flow conditions. The high and low temperature integrated unit 17 is connected to the heat exchange jacket of the heart-shaped microchannel reactor 18 and is used to provide the reactor with a heat exchange medium with precise temperature control. The product collection unit (not shown in the figure) is connected to the outlet of the heart-shaped microchannel reactor module and is used to receive the reaction liquid. The post-processing unit (not shown in the figure) is connected to the product collection unit and is used to perform static stratification, washing and drying of the received reaction liquid to obtain the product.

[0032] like Figure 2As shown, the heart-shaped microchannel reactor used in this invention is S-shaped and includes eight sections connected in series, with a liquid holding capacity of 80 ml. Each section includes an inlet (first inlet 1 and second inlet 5), a heart-shaped channel 3, a bent channel (U-bend) 4, a pressure balancing tank 2, and an outlet 6. The inlet connects to the pressure balancing tank 2 and then sequentially connects to several heart-shaped channels 3. At the bend, it connects to the bent channel 4. The bent channel 4, through the pressure balancing tank 2, then sequentially connects to several more heart-shaped channels 3, and then connects to the bent channel 4, the pressure balancing tank 2, and several more heart-shaped channels 3, until the outlet 6 of that section. The first inlet 1 of the first section connects to the first plunger pump 14, and the second inlet connects to the second plunger pump 13. The outlet of the previous section connects to one of the inlets of the next section, and one inlet of the fourth section connects to the third plunger pump 16. Unused inlets are sealed with a sealing cap.

[0033] A method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor, using a heart-shaped microchannel reactor (8 reactors in total, liquid holding capacity 80 mL), at a reaction temperature of 13°C and under normal pressure, specifically including the following steps: (1) 17wt% potassium hydroxide solution and 27wt% hydrogen peroxide solution are pumped into the heart-shaped microchannel reactor from the inlet of the first piece, respectively. Potassium hydroxide and hydrogen peroxide react first to generate potassium peroxide. (2) Pump in isopropyl chloroformate through the inlet of the fourth piece, and collect the reaction solution after 10 minutes of reaction. (3) After the reaction is completed, a post-processing step is performed, namely, the collected reaction liquid is allowed to stand and separate into layers, washed and dried to obtain the product.

[0034] The flow rates of hydrogen peroxide, potassium hydroxide, and isopropyl chloroformate were 7.45 ml / min, 26 ml / min, and 12.7 ml / min, respectively. The molar ratio of isopropyl chloroformate, sodium hydroxide, and hydrogen peroxide was 1:1:0.55.

[0035] The yield of diisopropyl peroxide was 98.9% according to the iodometric method for the determination of organic peroxide content in GB / T 32102-2015.

[0036] Example 2 A method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor, using a heart-shaped microchannel reactor, specifically includes the following steps: (1) 17wt% potassium hydroxide solution and 27wt% hydrogen peroxide solution are pumped into the heart-shaped microchannel reactor from the inlet of the first piece, respectively. Potassium hydroxide and hydrogen peroxide react first to generate potassium peroxide. (2) Pump in isopropyl chloroformate through the inlet of the fourth piece, and collect the reaction solution after 10 minutes of reaction. (3) After the reaction is completed, a post-processing step is performed, namely, the collected reaction liquid is allowed to stand and separate into layers, washed and dried to obtain the product.

[0037] The flow rates of hydrogen peroxide, potassium hydroxide, and isopropyl chloroformate were 6.77 ml / min, 26 ml / min, and 12.7 ml / min, respectively. The molar ratio of isopropyl chloroformate, sodium hydroxide, and hydrogen peroxide was 1:1:0.50.

[0038] The yield of diisopropyl peroxide was 98.8% according to the iodometric method for the determination of organic peroxide content in GB / T 32102-2015.

[0039] Example 3 A method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor, using a heart-shaped microchannel reactor, specifically includes the following steps: (1) 17wt% potassium hydroxide solution and 27wt% hydrogen peroxide solution are pumped into the heart-shaped microchannel reactor from the inlet of the first piece, respectively. Potassium hydroxide and hydrogen peroxide react first to generate potassium peroxide. (2) Pump isopropyl chloroformate into the inlet of the fourth piece, and collect the reaction solution after 10 minutes of reaction. (3) After the reaction is completed, a post-processing step is performed, namely, the collected reaction liquid is allowed to stand and separate into layers, washed and dried to obtain the product.

[0040] The flow rates of hydrogen peroxide, potassium hydroxide, and isopropyl chloroformate were 14.9 ml / min, 52 ml / min, and 25.4 ml / min, respectively. The molar ratio of isopropyl chloroformate, sodium hydroxide, and hydrogen peroxide was 1:1:0.55.

[0041] Other areas not mentioned are the same as in Example 1.

[0042] The yield of diisopropyl peroxide was 99.0% according to the iodometric method for the determination of organic peroxide content in GB / T 32102-2015.

[0043] Example 4 A method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor, using a heart-shaped microchannel reactor, specifically includes the following steps: (1) 17wt% potassium hydroxide solution and 27wt% hydrogen peroxide solution are pumped into the heart-shaped microchannel reactor from the inlet of the first piece, respectively. Potassium hydroxide and hydrogen peroxide react first to generate potassium peroxide. (2) Pump isopropyl chloroformate into the inlet of the fourth piece, and collect the reaction solution after 10 minutes of reaction. (3) After the reaction is completed, a post-processing step is performed, namely, the collected reaction solution is allowed to stand and separate into layers, washed and dried to obtain the product.

[0044] The flow rates of hydrogen peroxide, potassium hydroxide, and isopropyl chloroformate were 16.25 ml / min, 52 ml / min, and 25.4 ml / min, respectively. The molar ratio of isopropyl chloroformate, sodium hydroxide, and hydrogen peroxide was 1:1:0.6.

[0045] Other areas not mentioned are the same as in Example 1.

[0046] The yield of diisopropyl peroxide was 99.5% according to the iodometric method for the determination of organic peroxide content in GB / T 32102-2015.

[0047] Example 5 A method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor, using a heart-shaped microchannel reactor, specifically includes the following steps: (1) 17wt% potassium hydroxide solution and 27wt% hydrogen peroxide solution are pumped into the heart-shaped microchannel reactor from the inlet of the first piece, respectively. Potassium hydroxide and hydrogen peroxide react first to generate potassium peroxide. (2) Pump in isopropyl chloroformate through the inlet of the fourth piece, and collect the reaction solution after 10 minutes of reaction. (3) After the reaction is completed, a post-processing step is performed, namely, the collected reaction solution is allowed to stand and separate into layers, washed and dried to obtain the product.

[0048] The flow rates of hydrogen peroxide, potassium hydroxide, and isopropyl chloroformate were 17.8 ml / min, 52 ml / min, and 25.4 ml / min, respectively. The molar ratio of isopropyl chloroformate, sodium hydroxide, and hydrogen peroxide was 1:1:0.65.

[0049] Other areas not mentioned are the same as in Example 1.

[0050] The yield of diisopropyl peroxide was 99.2% according to the iodometric method for the determination of organic peroxide content in GB / T 32102-2015.

[0051] Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor, characterized in that, The reaction is carried out using a heart-shaped microchannel reactor, which is S-shaped and consists of 8 plates connected in series. Each plate includes an inlet. The specific steps include: (1) Raw materials A and B are pumped into the heart-shaped microchannel reactor from the inlet of the first piece, and raw materials A and B react first; (2) Pump raw material C into the heart-shaped microchannel reactor through the inlet of the fourth piece, so that raw material C reacts with the reaction products of raw material A and raw material B; collect the reaction liquid after the reaction. (3) Post-processing steps: the collected reaction solution is allowed to stand and separate into layers, washed and dried to obtain the product; Among them, raw material A is potassium hydroxide solution, raw material B is hydrogen peroxide solution, and raw material C is isopropyl chloroformate.

2. The method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor according to claim 1, characterized in that, Each piece of the heart-shaped microchannel reactor also includes a heart-shaped channel, a bent channel, a pressure balancing tank, and an outlet; wherein, the inlet is connected to the pressure balancing tank and then to several heart-shaped channels in sequence, and at the bend, it is connected to a bent channel, which then passes through the pressure balancing tank and is connected to several more heart-shaped channels in sequence, and then to the bent channel, the pressure balancing tank, and several more heart-shaped channels, until the outlet; the outlet of the previous piece is connected to the inlet of the next piece.

3. The method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor according to claim 2, characterized in that, The inlet includes a first inlet and a second inlet; raw materials A and B are pumped into the microchannel reactor through the first inlet and the second inlet, respectively; the outlet of the previous piece is connected to one of the inlets, and the other inlet is blocked or fed in.

4. The method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor according to claim 2, characterized in that, After the raw materials flow into the heart-shaped channel, the flow process in the heart-shaped channel is as follows: first, the flow splits and flows along both sides of the heart-shaped channel, then they converge and flow into the next channel after converging at the heart tip of the heart-shaped channel.

5. The method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor according to claim 2, characterized in that, In step (1), the mass fraction of potassium hydroxide solution is 15-20%, and the flow rate is 26-52 ml / min; the mass fraction of hydrogen peroxide solution is 25-30%, and the flow rate is 6.77-17.8 ml / min.

6. The method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor according to claim 2, characterized in that, In step (2), the flow rate of isopropyl chloroformate is 12.7–25.4 ml / min.

7. The method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor according to claim 2, characterized in that, The reaction is carried out under normal pressure. The reaction time for steps (1) and (2) is 8 to 12 minutes and the reaction temperature is below 15°C.

8. The method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor according to claim 2, characterized in that, The molar ratio of isopropyl chloroformate, potassium hydroxide, and hydrogen peroxide is 1:1:0.5 to 0.

65.

9. The method for preparing diisopropyl peroxide dicarbonate based on a microchannel reactor according to claim 2, characterized in that, The post-treatment steps are carried out at a low temperature below 15℃; the liquid phase is allowed to stand until it is completely separated; the washing is done with cold water 2 to 3 times; the drying is done by freeze drying or drying with a desiccant.

10. A system for implementing the method as described in any one of claims 1-9, characterized in that, include: Raw material supply unit, reaction unit, product collection unit, and post-processing unit; The raw material supply unit includes: Raw material container A is used to store potassium hydroxide solution; Raw material tank B is used to store hydrogen peroxide solution; Raw material tank C is used to store isopropyl chloroformate; The high-pressure plunger pump includes a first plunger pump, a second plunger pump, and a third plunger pump, which are respectively connected to the raw material A tank, the raw material B tank, and the raw material C tank, and are used to pump raw material A, raw material B, and raw material C into the subsequent reaction unit at a set flow rate; The reaction unit includes: A heart-shaped microchannel reactor, the inlet of which is connected to the outlet of the high-pressure plunger pump, is used to allow raw materials A, B and C to react under continuous flow conditions; The high and low temperature integrated unit is connected to the heat exchange jacket of the heart-shaped microchannel reactor and is used to provide the reactor with a heat exchange medium with precise temperature control. The product collection unit is connected to the outlet of the heart-shaped microchannel reactor module and is used to receive the reaction liquid; The post-processing unit, connected to the product collection unit, is used to perform static stratification, washing, and drying of the received reaction liquid to obtain the product.

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