Chemical synthesis reaction system and method based on magnetic induction electric field

Abstract

The application discloses a chemical synthesis reaction system and method based on a magnetic induction electric field. The chemical synthesis reaction system comprises a magnetic induction electric field-thermal reaction unit, the magnetic induction electric field-thermal reaction unit comprises a magnetic core, an excitation coil and a reaction tube through which a liquid containing reactants can continuously pass, the reaction tube comprises at least two first reaction tubes and at least one second reaction tube, each second reaction tube is connected with the at least two first reaction tubes and forms a closed loop, and the first reaction tubes and the excitation coil are spaced apart and independently arranged on the magnetic core. The application adopts the measures of electric heating cooperation to perform chemical synthesis reaction on the reactants, the reactants can be synthesized into target products in the magnetic induction electric field thermal reactor at one time, and the chemical synthesis can be continuously performed to greatly improve the production efficiency.

Description

Technical Field

[0001] This invention relates to equipment for carrying out chemical synthesis reactions in temperature and electric fields, and particularly to a chemical synthesis reaction system and method based on a magnetically induced electric field, belonging to the field of chemical synthesis technology. Background Technology

[0002] Chemical synthesis refers to the physicochemical changes that occur when two or more simple molecules combine in a controlled manner to produce more complex chemical products. It is the study of the creation and transformation of matter, the foundation and core of chemical science, and a crucial pathway and means for humankind to understand and create matter. Breakthroughs in chemical synthesis not only influence the rapid development of chemical science itself but also play a significant role in promoting and advancing other sciences, such as life sciences, materials science, and medicine. Chemical synthesis is widely used in the development of all commercially important products in pharmaceuticals, polymers, fine chemicals, and bulk chemical industries. Successful chemical synthesis, meaning the production of target molecules with the required economic efficiency and quality, is closely related to the effective use of reactants and reagents through a thorough understanding and control of reaction variables.

[0003] Modern chemical synthesis is responsible for manufacturing all organic and inorganic products, requiring advanced technologies in both laboratory and industrial production to meet new demands for quality, safety, and productivity. However, most chemical synthesis reactions are reversible, requiring catalysts to drive the reaction forward. Furthermore, when the reaction reaches equilibrium, products must be continuously removed from the reactor or reactants added to disrupt the equilibrium and promote further reaction. These reactions also require high operating pressures and temperatures, involving cyclical reactions in various reaction vessels or reactors, resulting in extremely low catalytic efficiency, high energy consumption, and bulky, costly equipment. This constitutes a major obstacle to improving chemical processes. Summary of the Invention

[0004] The main objective of this invention is to provide a chemical synthesis reaction system and method based on a magnetically induced electric field, thereby overcoming the shortcomings of the prior art.

[0005] To achieve the aforementioned objectives, the technical solution adopted by this invention includes:

[0006] The present invention provides a chemical synthesis reaction system based on a magnetic induction electric field, comprising: a magnetic induction electric field-thermal reaction unit, wherein the magnetic induction electric field-thermal reaction unit includes a magnetic core, an excitation coil, and a reaction tube through which a liquid containing reactants can be continuously passed. The reaction tube includes at least two first reaction tubes and at least one second reaction tube. The at least two first reaction tubes and the excitation coil are respectively wound on the magnetic core. Each second reaction tube is connected to at least two first reaction tubes to form at least two closed loops through which the liquid can be continuously passed. The first reaction tubes are also connected to a second inlet, and the second reaction tubes are also connected to a second outlet.

[0007] When an excitation voltage is supplied to the excitation coil and a liquid containing reactants is injected into the reaction tube, the liquid continuously flowing through the closed loop spontaneously induces an electric field and an induced current in the pulsed magnetic field provided by the excitation coil and the magnetic core. Specifically, a first induced current is formed in the first reaction tube, and the liquid in the first reaction tube is heated to a first temperature by self-heating. A second induced current is formed in the second reaction tube, and the liquid in the second reaction tube is heated to a second temperature by self-heating. The second induced current is greater than the first induced current, and the second temperature is greater than the first temperature. Under the first temperature condition, the reactants in the liquid enter the induction period of the chemical synthesis reaction and form intermediates of some reaction products. Under the second temperature condition, the reactants complete the chemical synthesis reaction and obtain the reaction products.

[0008] In another aspect, the present invention provides a method for chemical synthesis, comprising:

[0009] Provided the aforementioned chemical synthesis reaction system based on magnetically induced electric field;

[0010] The liquid containing reactants is continuously injected into the reaction tube, and an excitation voltage is applied to the excitation coil with a high-frequency excitation power supply to form an induced electric field and an induced current in the liquid continuously flowing through the closed loop, such that the second induced current in the second reaction tube is greater than the first induced current in the first reaction tube. The liquid in the first reaction tube is self-heated to a first temperature under the excitation of the first induced current, and the reactants undergo a pre-reaction at the first temperature and enter the induction period of the chemical synthesis reaction, forming an intermediate of some reaction products. The liquid in the second reaction tube is self-heated to a second temperature under the excitation of the second induced current, and the reactants complete the chemical synthesis reaction at the second temperature to obtain the reaction products.

[0011] Compared with the prior art, the advantages of the present invention include:

[0012] (1) The present invention provides a chemical synthesis reaction system and method based on magnetic induction electric field, which adopts electrothermal synergistic catalysis so that the reactant molecules obtain most of the energy required for the reaction in the first reaction tube, and then carry out the chemical reaction in the second reaction tube, which makes the reaction easier to carry out and greatly improves the catalytic efficiency and production efficiency.

[0013] (2) The magnetic field generated by the magnetic field-thermal reaction unit in the chemical synthesis reaction system based on magnetic field provided by the present invention is to induce the reactant molecules to generate an electrothermal effect by pulsed magnetic field. It is a volume heating process, which avoids the energy consumption of the medium heat transfer process and greatly improves the energy utilization rate.

[0014] (3) The present invention provides a chemical synthesis reaction system based on magnetic induction electric field, which can flexibly adjust the reaction parameters and conditions according to the characteristics of certain chemical synthesis reactions, and can flexibly build, assemble and disassemble the reaction system according to the characteristics of reactants and products. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a chemical synthesis reaction system based on a magnetic induction electric field, provided in a typical embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the overall structure of the magnetic induction electric field-thermal reaction unit provided in a typical embodiment of the present invention;

[0018] Figure 3 This is a front view of a magnetic induction electric field-thermal reaction unit provided in a typical embodiment of the present invention;

[0019] Figure 4 This is a top view of the magnetic induction electric field-thermal reaction unit provided in a typical embodiment of the present invention;

[0020] Figure 5 This is a side view of a magnetic induction electric field-thermal reaction unit provided in a typical embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the magnetic core in a magnetic induction electric field-thermal reaction unit provided in a typical embodiment of the present invention. Detailed Implementation

[0022] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The following will further explain and illustrate this technical solution, its implementation process, and its principles.

[0023] The inventors of this case discovered that magnetic induction electric field technology can exert an electrothermal effect on polar molecules. The principle is that a high-frequency pulsed magnetic field induces molecules or atoms to generate an induced electric field and current. The inherent resistance of the molecules induces internal heat generation. Simultaneously, the induced electric field and current excite electrons within the molecules or atoms, causing them to transition from a normal stable state to a higher energy level. This allows reactant molecules to gain energy, thereby accelerating product formation. This technology utilizes energy differently from conventional heating methods. The induced electric field is spontaneously induced within the substance itself, belonging to a volumetric heat generation process. It has a high energy utilization rate, and the molecules quickly gain energy under the influence of the electric field, significantly increasing the reaction rate.

[0024] This invention applies magnetic induction electric field technology to the field of chemical synthesis, representing a new breakthrough in the application of novel electrical technology in chemical synthesis. It can precisely control reaction parameters and conditions, is applicable to a variety of chemical processes, and aims to produce high-quality, economically feasible molecules.

[0025] The present invention provides a chemical synthesis reaction system based on a magnetic induction electric field, comprising: a magnetic induction electric field-thermal reaction unit, wherein the magnetic induction electric field-thermal reaction unit includes a magnetic core, an excitation coil, and a reaction tube through which a liquid containing reactants can be continuously passed. The reaction tube includes at least two first reaction tubes and at least one second reaction tube. The at least two first reaction tubes and the excitation coil are respectively wound on the magnetic core. Each second reaction tube is connected to at least two first reaction tubes to form at least two closed loops through which the liquid can be continuously passed. The first reaction tubes are also connected to a second inlet, and the second reaction tubes are also connected to a second outlet.

[0026] When an excitation voltage is supplied to the excitation coil and a liquid containing reactants is injected into the reaction tube, the liquid continuously flowing through the closed loop spontaneously induces an electric field and an induced current in the pulsed magnetic field provided by the excitation coil and the magnetic core. Specifically, a first induced current is formed in the first reaction tube, and the liquid in the first reaction tube is heated to a first temperature by self-heating. A second induced current is formed in the second reaction tube, and the liquid in the second reaction tube is heated to a second temperature by self-heating. The second induced current is greater than the first induced current, and the second temperature is greater than the first temperature. Under the first temperature condition, the reactants in the liquid enter the induction period of the chemical synthesis reaction and form intermediates of some reaction products. Under the second temperature condition, the reactants complete the chemical synthesis reaction and obtain the reaction products.

[0027] Furthermore, the first reaction tube is also connected to the second inlet, and the second reaction tube is also connected to the second outlet.

[0028] Furthermore, the diameter of the first reaction tube is greater than or equal to the diameter of the second reaction tube.

[0029] Furthermore, the diameter of the first reaction tube is 5-50 mm, and the diameter of the second reaction tube is 5-30 mm.

[0030] Furthermore, both the first and second reaction tubes are insulated and resistant to high temperature, high pressure, and corrosion.

[0031] Furthermore, the excitation coil has 1-5 turns, and the first reaction tube has a total of 20-50 turns.

[0032] Furthermore, the magnetic core has a closed ring structure.

[0033] Furthermore, the magnetic core is a rounded core.

[0034] Furthermore, the magnetic core is an amorphous nanocrystalline soft magnetic component.

[0035] Furthermore, the magnetic induction electric field-thermal reaction unit also includes a temperature and pressure monitoring probe, which is disposed inside the first reaction tube and the second reaction tube.

[0036] Furthermore, the chemical synthesis reaction system based on a magnetically induced electric field also includes:

[0037] A mixing unit, connected to the second feed port, is used at least for storing and mixing a liquid containing reactants;

[0038] A separation unit is connected to the second discharge port and is used at least to separate reaction products formed by the chemical synthesis reaction;

[0039] A high-frequency excitation power supply is electrically connected to the excitation coil;

[0040] The PLC control unit is electrically connected to the hybrid unit, the high-frequency excitation power supply, and the temperature and pressure monitoring probe.

[0041] In another aspect, the present invention provides a method for chemical synthesis, comprising:

[0042] Provided the aforementioned chemical synthesis reaction system based on magnetically induced electric field;

[0043] The liquid containing reactants is continuously injected into the reaction tube, and an excitation voltage is applied to the excitation coil with a high-frequency excitation power supply to form an induced electric field and an induced current in the liquid continuously flowing through the closed loop, so that the second induced current in the second reaction tube is greater than the first induced current in the first reaction tube. The liquid in the first reaction tube is self-heated to a first temperature under the excitation of the first induced current. The reactants undergo a pre-reaction at the first temperature and enter the induction period of the chemical synthesis reaction, forming an intermediate of some reaction products. The liquid in the second reaction tube is self-heated to a second temperature under the excitation of the second induced current. The reactants complete the chemical synthesis reaction at the second temperature and obtain the reaction products.

[0044] Furthermore, the chemical synthesis method specifically includes: adjusting the electric field strength of the induced electric field and the current density of the induced current by adjusting at least one of the excitation voltage, excitation current and excitation frequency of the high-frequency excitation power supply.

[0045] Furthermore, the excitation voltage of the high-frequency excitation power supply is 200-1000 V, the excitation current is 5-10 A, and the excitation frequency is 30-70 kHz. The first induced current in the first reaction tube is 0-50 A, and the induced current density is 0-5 A / cm². 2 The second induced current in the second reaction tube is 50-200A, and the induced current density is 5-20 A / cm². 2 .

[0046] Furthermore, the chemical synthesis reaction includes any one of halogenation, nitration, redox, elimination, alkylation, acylation, condensation, and rearrangement reactions.

[0047] Specifically, the method for chemical synthesis using the aforementioned chemical synthesis reaction system based on magnetic induction electric field includes:

[0048] (1) Raw material pretreatment: The main raw materials, catalysts, solvents, additives or water required for the reaction are added to the mixing unit. Depending on the specific situation, various pretreatment processes such as purification, concentration, mixing or emulsification are carried out in the unit. The purpose is to convert the raw materials into reactants in the reaction state.

[0049] (2) Pre-reaction: The pretreated reactants enter the first reaction tube in the magnetic induction electric field-thermal reaction unit through the valve; due to the weak electrical and thermal effects generated spontaneously in the first reaction tube, the reactant molecules obtain most of the energy required for the reaction in the first reaction tube, the reaction enters the induction period and forms some intermediates;

[0050] (3) Chemical reaction: When the liquid containing the reactants enters the second reaction tube from the first reaction tube, its energy gradually accumulates; according to Faraday's law of electromagnetic induction, the spiral first reaction tube generates an induced electric field under the action of a pulsed magnetic field. This induced electric field is further concentrated in the second reaction tube to generate a stronger current and electric field. Under the dual action of electrothermal, the reactants undergo complete chemical synthesis reaction and are transformed into products and by-products.

[0051] (4) Product separation and purification: The products generated by the reaction are separated from the reaction system by a separation unit. Specifically, the products can be separated by separation processes such as condenser, evaporator, distillation column or desorption column, or by purification processes such as distillation column or extraction column to obtain the target product.

[0052] The following will further explain the technical solution, its implementation process and principle in conjunction with the accompanying drawings and specific implementation examples. Unless otherwise specified, the magnetic core, excitation coil, reaction tube, reaction vessel, high-frequency excitation power supply, temperature and pressure monitoring probe, PLC controller and other components used in the embodiments of the present invention are all known to those skilled in the art and can be obtained commercially. Their specific models and structures are not limited here.

[0053] Example 1

[0054] Please see Figure 1 A chemical synthesis reaction system based on a magnetic induction electric field includes: a mixing unit 100, a magnetic induction electric field-thermal reaction unit 200, a high-frequency excitation power supply 300, a separation unit 400, and a PLC control unit 500. The mixing unit 100, the high-frequency excitation power supply 300, and the separation unit 400 are respectively connected to the magnetic induction electric field-thermal reaction unit 200. The PLC control unit 500 is connected to the high-frequency excitation power supply 300, the magnetic induction electric field-thermal reaction unit 200, and the mixing unit 100, and is used to control and coordinate the operation of the three.

[0055] In this embodiment, the mixing unit 100 is at least used to uniformly mix the reactants required for the chemical synthesis reaction to form a liquid containing the reactants, and to temporarily store the liquid containing the reactants formed by mixing.

[0056] In this embodiment, please refer again. Figure 1The mixing unit 100 includes a high-temperature and high-pressure resistant reactor. The reactor includes a vessel body and a stirring device 103. The stirring device 103 is disposed in the vessel body. The vessel body is provided with a first feed inlet A101, a third feed inlet B102, and a first discharge outlet. A fully automatic valve 104 is provided at the first discharge outlet. The first feed inlet A101 is used to control the packing of one of the reactants, and the third feed inlet B102 is used to control the packing of another reactant. The stirring device 103 is used to stir the reactants and to fully mix them. The fully automatic valve 104 is used to control the mode (intermittent / continuous) and speed at which the liquid containing the reactants enters the magnetic induction electric field-thermal reaction unit 200.

[0057] In this embodiment, the magnetic induction electric field-thermal reaction unit 200 is mainly used to allow the reactants in the feed liquid containing the reactants to undergo a chemical synthesis reaction and generate reaction products.

[0058] In this embodiment, please refer to Figures 1-6 The magnetic induction electric field-thermal reaction unit 200 includes a magnetic core 202, an excitation coil 205, and a reaction tube through which a liquid containing reactants can be continuously passed. The reaction tube includes two first reaction tubes 203 and one second reaction tube 204. The two first reaction tubes 203 are connected to the second inlet 201 of the reaction tube, and the second reaction tube 204 is connected to the second outlet 207 of the reaction tube. The two first reaction tubes 203 are also connected to the second reaction tube 204 respectively. Each first reaction tube 203 and the second reaction tube 204 are connected to form a loop through which the liquid can flow continuously. The two first reaction tubes 203 and the second reaction tube 204 are also provided with temperature and pressure monitoring probes 206 for monitoring temperature and pressure. The two first reaction tubes 203 and the excitation coil 205 are wound on the magnetic core 202 at intervals and independently. The second inlet 201 is connected to the first outlet of the mixing unit 100.

[0059] In this embodiment, the magnetic core 202 is a closed annular rounded corner magnetic core. The outer perimeter length L1 of the magnetic core is 30cm-150cm, the outer perimeter width W1 is 15cm-80cm, the inner perimeter length L2 is 15cm-100cm, the inner perimeter width W2 is 10cm-50cm, and the height H is 20cm-80cm.

[0060] In this embodiment, the magnetic core 202 is made of amorphous nanocrystalline soft magnetic material.

[0061] In this embodiment, the second feed inlet 201 is positioned directly below the magnetic core 202 along the height direction of the magnetic core, and the second discharge outlet 207 is positioned directly above the magnetic core 202 along the height direction of the magnetic core. The two first reaction tubes 203 are spaced apart and wound around the magnetic core 202 relative to each other along the width direction of the magnetic core. The second feed inlet 201 is connected to the two first reaction tubes 203 through a T-connector, and the two ends of the two first reaction tubes 203 are connected to the second reaction tube 204 through a T-connector. The second reaction tube 204 is connected to the second discharge outlet 207 through a T-connector.

[0062] In this embodiment, the diameter of the first reaction tube 203 is greater than or equal to the diameter of the second reaction tube 204. Specifically, the diameter of the first reaction tube 203 is 5 mm-50 mm, and the total number of turns of the two first reaction tubes 203 on both sides of the magnetic core is 20-50 turns; the diameter of the second reaction tube 204 is 5 mm-30 mm.

[0063] In this embodiment, the first reaction tube 203 and the second reaction tube 204 are made of materials such as quartz glass, silicone, high-purity polytetrafluoroethylene, PPL or PE, which are resistant to high temperature, high pressure and corrosion.

[0064] In this embodiment, the excitation coil 205 is wound along the length of the magnetic core on one side of the magnetic core 202. Specifically, the number of turns of the excitation coil 205 is 1-5 turns.

[0065] In this embodiment, the high-frequency excitation power supply 300 is electrically connected to the excitation coil 205. Specifically, the excitation voltage of the high-frequency excitation power supply 300 is 200-1000 V, the excitation current is 5-10 A, the excitation frequency is 30-70 kHz, the high-frequency excitation power supply 300 is a square wave pulse waveform, and the first induced current in the first reaction tube 203 is 0-50 A, with an induced current density of 0-5 A / cm². 2 The second induced current in the second reaction tube 204 is 50-200A, and the induced current density is 5-20 A / cm². 2 The high-frequency excitation power supply 300 controls the electric field strength, current density, and heating temperature of the magnetic induction electric field-thermal reaction unit 200 by adjusting the power supply parameters.

[0066] In this embodiment, the separation unit 400 is connected to the second outlet 207 of the magnetic induction electric field-thermal reaction unit 200 and is used for the separation of reaction products. The separation unit 400 can be flexibly selected, installed, removed or split according to the properties of the reaction products.

[0067] In this embodiment, the PLC control unit 500 is used to control and coordinate the entire chemical reactor. Through the PLC control unit 500, the electrical parameters of the high-frequency excitation power supply 300 can be set and adjusted, the pressure, mode and rate of the reactor can be adjusted, and the temperature and pressure of the magnetic induction electric field-thermal reaction unit 200 can be monitored in real time and fed back to the high-frequency excitation power supply 300. The PLC control unit 500 includes a PLC controller, etc.

[0068] In this embodiment, when an excitation voltage is supplied to the excitation coil 205 and a liquid containing reactants is injected into the reaction tube, the liquid continuously flowing through the closed loop formed by the connection of a first reaction tube 203 and a second reaction tube 204 spontaneously induces an electric field and an induced current in the pulsed magnetic field provided by the excitation coil 205 and the magnetic core 202. A first induced current is formed in the first reaction tube 203, and a second induced current is formed in the second reaction tube 204. The magnitude of the second induced current is much larger than the magnitude of the first induced current. The liquid containing reactants in the reaction tube self-heats under the current heating effect, generating heat sufficient for the reactants to undergo a chemical synthesis reaction. Under the influence of the reactants' own resistance in the liquid within the reaction tube, the liquid in the first reaction tube 203 is heated to a first temperature and a first energy. The first temperature and the first energy enable the reactants to enter the induction period of the pre-reaction of the chemical synthesis reaction and form an intermediate of some reaction products. The second temperature and the second energy enable the reactants to complete the chemical synthesis reaction and obtain the reaction products. Therefore, the first reaction tube can also be called a pre-reaction tube.

[0069] In this embodiment, the electric field in the magnetic induction electric field-thermal reaction unit 200 is spontaneously generated by the liquid material continuously passing through the closed loop portion of the reaction tube in the pulsed magnetic field in the magnetic core 202; the heat in the magnetic induction electric field-thermal reaction unit 200 is generated by the amplification of the induced current density caused by the resistance of the reactants themselves.

[0070] It should be noted that the chemical synthesis reaction includes inorganic chemical synthesis reaction or organic chemical synthesis reaction; the parameters of the high-frequency excitation power supply, reaction vessel, and separation unit can be customized or adjusted in the PLC control unit according to the characteristics of the chemical synthesis reaction or its products.

[0071] Specifically, the chemical synthesis reaction system based on a magnetic induction electric field in this embodiment can be used to perform chemical synthesis for some chemical synthesis reactions by selecting appropriate electrical parameters, such as halogenation, nitration, redox, elimination, alkylation, acylation, condensation and rearrangement reactions, etc.; this embodiment can also be used to verify production efficiency, catalytic efficiency and energy utilization.

[0072] Example 2

[0073] The chemical synthesis of ethyl acetate was carried out using a chemical synthesis reaction system based on a magnetically induced electric field as described in Example 1. The specific operation steps are as follows:

[0074] The excitation coil 205 in the magnetic induction electric field-thermal reaction unit 200 has 2 turns. The outer perimeter of the magnetic core 202 has a length L1 of 60 cm, an outer perimeter width W1 of 30 cm, an inner perimeter length L2 of 40 cm, an inner perimeter width W2 of 10 cm, and a height H of 20 cm. The diameter of the first reaction tube 203 is 1.2 cm, and the total number of turns in the first reaction tube 203 is 50. The diameter of the second reaction tube 204 is 0.8 cm. An excitation power supply with an excitation voltage of 600 V, an excitation current of 5 A, and an excitation frequency of 50 kHz is selected. The valve 104 of the mixing unit is set to continuous feeding mode.

[0075] (1) Pretreatment: Add the appropriate amount of carboxylic acid, excess ethanol and appropriate amount of concentrated sulfuric acid required for the reaction to the reaction vessel and stir evenly. The purpose is to convert the raw materials into reactants in the reaction state.

[0076] (2) Pre-reaction: The above reactants enter the first reaction tube 203 in the magnetic induction electric field-thermal reaction unit 200 through valve 104; due to the weak electrical and thermal effects generated by this tube, the reactants generate heat and gradually increase in temperature, and obtain most of the energy required for the reaction in this process, so that the reaction between the reactants enters the induction period and forms some intermediates.

[0077] (3) Chemical reaction: When the reactants enter the second reaction tube 204 from the first reaction tube 203, their energy gradually accumulates. According to Faraday's law of electromagnetic induction, the spiral first reaction tube 203 generates an induced electric field under the action of the pulse magnetic field. This induced electric field is further concentrated in the second reaction tube 204 and generates a stronger current and electric field. Under the dual action of electrothermal, acetic acid and ethanol react completely and are converted into ethyl acetate and by-products.

[0078] (4) Product separation and purification: After the reaction is complete, the ethyl acetate and by-products generated by the reaction are separated from the reaction system and purified by saturated sodium carbonate, saturated calcium chloride and distillation column to obtain the target product. The entire reaction takes about 30 min.

[0079] (5) Calculation of product conversion rate: The ethyl acetate obtained was weighed and calculated. The conversion rate of the above chemical synthesis reaction was approximately 85-87%.

[0080] Example 3

[0081] Sodium thiosulfate was chemically synthesized using a chemical synthesis reaction system based on a magnetically induced electric field, as described in Example 1. The specific operation steps are as follows:

[0082] The excitation coil 205 in the magnetic induction electric field-thermal reaction unit has 2 turns. The outer perimeter of the magnetic core 202 has a length L1 of 40 cm, an outer perimeter width W1 of 24 cm, an inner perimeter length L2 of 20 cm, an inner perimeter width W2 of 8 cm, and a height H of 15 cm. The diameter of the first reaction tube 203 is 1 cm, and the total number of turns of the first reaction tube 203 is 40. The diameter of the second reaction tube 204 is 0.5 cm. An excitation power supply with an excitation voltage of 500 V, an excitation power supply of 4 A, and an excitation frequency of 50 kHz is selected and electrically connected to the excitation coil. The valve 104 of the mixing unit is set to continuous feeding mode.

[0083] (1) Pretreatment: Add appropriate amounts of sulfur powder, sodium sulfite solid, ethanol solution and water required for the reaction to the reaction vessel, and stir into a homogeneous slurry under slight heating to ensure that the proportion of materials entering the first reaction tube is uniform and coordinated.

[0084] (2) Pre-reaction: The above reaction mixture enters the first reaction tube 203 in the magnetic induction electric field-thermal reaction unit 200 through valve 104; due to the weak electrical and thermal effects generated by this tube, the reactants generate heat and gradually increase in temperature, and obtain most of the energy required for the reaction in this process, so that the reaction between the reactants enters the induction period and forms some intermediates.

[0085] (3) Chemical reaction: When the reaction mixture enters the second reaction tube 204 from the first reaction tube 203, its energy gradually accumulates. According to Faraday's law of electromagnetic induction, the spiral first reaction tube 203 generates an induced electric field under the action of the pulse magnetic field. This induced electric field is further concentrated in the second reaction tube 204 to generate a stronger current and electric field. Under the dual action of electrothermal, the reaction mixture reacts completely and generates crude sodium thiosulfate.

[0086] (4) Product separation and purification: After the reaction is complete, the crude sodium thiosulfate generated by the reaction is separated from the reaction system and purified by separation units such as hot filtration, evaporation and concentration, and cooling crystallization.

[0087] (5) Weighing, identifying and calculating the yield: Weigh the obtained sodium thiosulfate and calculate the yield. The theoretical yield is about 1000 g, and the actual yield is about 780-800 g. The yield of the above chemical synthesis reaction is about 78-80%. After identifying the instability, reducing power and complexing ability of the product, the prepared sodium thiosulfate is unstable and easily decomposed under acidic conditions, and has strong reducing power and complexing ability.

[0088] Comparative Example 1: Chemical synthesis of ethyl acetate using a conventional laboratory reactor:

[0089] The specific implementation method is the same as in Example 2, except that: Comparative Example 1 uses a conventional laboratory reactor for the synthesis of ethyl acetate, and the specific operation steps are as follows:

[0090] (1) Preparation stage: Install the experimental apparatus and add ethanol, concentrated sulfuric acid and acetic acid to the three-necked flask and dropping funnel respectively; heat slowly to make the temperature of the reaction mixture in the flask about 120°C, and slowly add the materials continuously to keep the temperature of the reaction mixture at 120-125°C;

[0091] (2) Post-processing stage: Neutralize unreacted acetic acid with saturated sodium carbonate; wash with saturated brine to remove residual sodium carbonate; wash with saturated calcium chloride to remove unreacted ethanol; dry the crude product; and collect and purify the product by distillation.

[0092] (3) Calculation of product conversion rate: The ethyl acetate obtained was weighed and calculated. The conversion rate of the above chemical synthesis reaction was about 67-69%; the entire reaction took about 180 min.

[0093] Comparative Example 2: Chemical synthesis of sodium thiosulfate using a conventional laboratory reactor:

[0094] The specific implementation method is the same as in Example 3, except that: Comparative Example 2 uses a conventional laboratory reactor to synthesize sodium thiosulfate, and the specific operation steps are as follows:

[0095] (1) Preparation stage: Install the experimental apparatus, add 1.5 g sulfur powder, 3 mL ethanol solution, 5.1 g sodium sulfite and 30 mL water to the beaker, and heat and stir; continue heating to a gentle boil and maintain for 60 min;

[0096] (2) Post-processing stage: The above reaction solution is filtered while hot; then evaporated and concentrated until the solution is turbid; then cooled and crystallized, and the crystals are washed, filtered and recovered.

[0097] (3) Weighing, identification and yield calculation: The obtained sodium thiosulfate was weighed and the yield was calculated. The theoretical yield was about 10 g, and the actual yield was about 6.7-6.8 g. The yield of the above chemical synthesis reaction was about 67-68%. After the product was identified for instability, reducing power and coordination ability, the prepared sodium thiosulfate was found to be extremely unstable and easily decomposed under acidic conditions, and had strong reducing power and coordination ability.

[0098] In summary, Example 2, compared with Comparative Example 1, demonstrates that the chemical synthesis reactor based on a magnetically induced electric field of the present invention significantly improves the conversion rate and chemical reaction time of ethyl acetate synthesis, thereby increasing energy utilization. Example 3, compared with Comparative Example 2, demonstrates that the present invention also has various advantages in the synthesis reaction of sodium thiosulfate compared with conventional reactors, such as high synthesis yield and more stable products. Compared with conventional or traditional chemical synthesis reactors, the chemical synthesis reactor based on a magnetically induced electric field of the present invention has production potential in the fields of pharmaceuticals, polymers, and fine chemicals.

[0099] This invention employs an electrothermal synergistic approach to enable reactants to undergo chemical synthesis reactions. The reactants can be synthesized into the target product in a single step within a magnetic induction electric field thermal reaction unit, allowing for continuous chemical synthesis to significantly improve production efficiency. Furthermore, this invention provides a multi-physics field, low-energy-consumption, and environmentally friendly chemical synthesis reaction system that can be used to synthesize some inorganic or organic chemical synthesis reactions.

[0100] It should be understood that the above embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A chemical synthesis reaction system based on a magnetically induced electric field, characterized in that, include: A magnetic induction electric field-thermal reaction unit (200) includes a magnetic core (202), an excitation coil (205), and a reaction tube through which a liquid containing reactants can be continuously passed. The reaction tube includes at least two first reaction tubes (203) and at least one second reaction tube (204). The at least two first reaction tubes (203) and the excitation coil (205) are respectively wound on the magnetic core (202). Each second reaction tube (204) is connected to at least two first reaction tubes (203) to form at least two closed loops through which the liquid can be continuously passed. The first reaction tube (203) is also connected to a second inlet (201), and the second reaction tube (204) is also connected to a second outlet (207). The number of turns of the excitation coil is 1-5 turns, and the total number of turns of the first reaction tube (203) is 20-50 turns. When an excitation voltage is supplied to the excitation coil (205) and a liquid containing reactants is injected into the reaction tube, the liquid continuously flowing through the closed loop spontaneously induces an electric field and an induced current in the pulsed magnetic field provided by the excitation coil (205) and the magnetic core (202). A first induced current is formed in the first reaction tube (203), and the liquid in the first reaction tube (203) is heated to a first temperature by self-heating. A second induced current is formed in the second reaction tube (204), and the liquid in the second reaction tube (204) is heated to a second temperature by self-heating. The second induced current is greater than the first induced current, and the second temperature is greater than the first temperature. Under the first temperature condition, the reactants in the liquid enter the induction period of the chemical synthesis reaction and form an intermediate of part of the reaction product. Under the second temperature condition, the reactants complete the chemical synthesis reaction and obtain the reaction product.

2. The chemical synthesis reaction system based on a magnetically induced electric field according to claim 1, characterized in that: The first reaction tube (203) is also connected to the second inlet (201), and the second reaction tube (204) is also connected to the second outlet (207).

3. The chemical synthesis reaction system based on a magnetically induced electric field according to claim 1 or 2, characterized in that: The diameter of the first reaction tube (203) is greater than or equal to the diameter of the second reaction tube (204).

4. The chemical synthesis reaction system based on a magnetically induced electric field according to claim 3, characterized in that: The diameter of the first reaction tube (203) is 5-50 mm, and the diameter of the second reaction tube (204) is 5-30 mm.

5. The chemical synthesis reaction system based on a magnetically induced electric field according to claim 1 or 2, characterized in that: Both the first reaction tube (203) and the second reaction tube (204) are insulated and resistant to high temperature, high pressure and corrosion.

6. The chemical synthesis reaction system based on a magnetically induced electric field according to claim 1, characterized in that: The magnetic core (202) is a closed ring structure.

7. The chemical synthesis reaction system based on a magnetically induced electric field according to claim 1, characterized in that: The magnetic core (202) is a rounded core.

8. The chemical synthesis reaction system based on a magnetically induced electric field according to claim 1, characterized in that: The magnetic core (202) is an amorphous nanocrystalline soft magnetic component.

9. The chemical synthesis reaction system based on a magnetically induced electric field according to claim 2, characterized in that: The magnetic induction electric field-thermal reaction unit (200) also includes a temperature and pressure monitoring probe (206), which is disposed in the first reaction tube (203) and the second reaction tube (204).

10. The chemical synthesis reaction system based on a magnetically induced electric field according to claim 9, characterized in that, Also includes: A mixing unit (100) is connected to the second feed port (201) and is used at least for storing and mixing a liquid containing reactants; The separation unit (400) is connected to the second discharge port (207) and is used at least to separate the reaction products formed by the chemical synthesis reaction; A high-frequency excitation power supply (300) is electrically connected to the excitation coil (205); The PLC control unit (500) is electrically connected to the hybrid unit (100), the high-frequency excitation power supply (300), and the temperature and pressure monitoring probe (206).

11. A method for chemical synthesis, characterized in that... include: Provides a chemical synthesis reaction system based on a magnetically induced electric field according to any one of claims 1-10; The liquid containing reactants is continuously injected into the reaction tube, and an excitation voltage is applied to the excitation coil with a high-frequency excitation power supply to form an induced electric field and an induced current in the liquid continuously flowing through the closed loop, and the second induced current in the second reaction tube (204) is greater than the first induced current in the first reaction tube (203). The liquid in the first reaction tube (203) is self-heated to a first temperature under the excitation of the first induced current. The reactants undergo a pre-reaction at the first temperature and enter the induction period of the chemical synthesis reaction and form an intermediate of part of the reaction product. The liquid in the second reaction tube (204) is self-heated to a second temperature under the excitation of the second induced current. The reactants complete the chemical synthesis reaction at the second temperature and obtain the reaction product.

12. The method of chemical synthesis according to claim 11, characterized in that, Specifically, it includes: The electric field strength of the induced electric field and the current density of the induced current are adjusted by at least one of the excitation voltage, excitation current and excitation frequency of the high-frequency excitation power supply.

13. The method of chemical synthesis according to claim 12, characterized in that: The high-frequency excitation power supply has an excitation voltage of 200-1000 V, an excitation current of 5-10 A, and an excitation frequency of 30-70 kHz.

14. The method of chemical synthesis according to claim 11, characterized in that: The chemical synthesis reaction includes any one of the following: halogenation, nitration, redox reaction, elimination, alkylation, acylation, condensation, and rearrangement.

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