Continuous feeding intelligent chemical reaction device

Abstract

The utility model discloses a continuous feeding intelligent chemical reaction device. A material inlet of the continuous feeding intelligent chemical reaction device sequentially passes through an electromagnetic valve, an extrusion type filter, an ultrafilter, a tail end sensor combination and an electromagnetic valve and then is communicated with a material mixing cavity; the catalyst inlet is communicated with the material mixing cavity after sequentially passing through the electromagnetic valve, the extrusion type filter, the ultrafilter, the tail end sensor combination, the mixing cavity pipeline and the electromagnetic valve; the nitrogen replacement inlet is communicated with the material mixing cavity after sequentially passing through the electromagnetic valve, the extrusion type filter, the ultrafilter, the tail end sensor combination, the mixing cavity pipeline and the electromagnetic valve; an outlet of the material mixing cavity sequentially passes through the micro-channel reactor, the static mixer, the reaction material collecting tube, the tail end sensor combination, the relay extrusion gear pump, the single-tube static mixer and the tail end sensor combination to form an outlet. According to the utility model, each material with a specified ratio can simultaneously and continuously enter a customized mixing cavity to be subjected to high-shear homogenization so as to forcibly realize a coupling chemical reaction to the greatest extent in a micro-channel reaction combination.

Description

TECHNICAL FIELD

[0001] The utility model relates to a chemical reaction device, especially a continuous feeding intelligent chemical reaction device. BACKGROUND

[0002] The intensified reaction mode of petroleum, chemical industry and chemical synthetic medicine application is mainly dedicated to reducing the by-products caused by local heterogeneous reaction. Such as Chinese patent CN2006200785544, CN201410276754X, CN201520768934X etc. all are partially solved the problem of instantaneous mixing and instant heat removal, however, how to realize the continuous and equal proportion feeding of the initial reaction materials, the forced and uniform mixing of the materials, the maximum degree of reaction coupling and the controllable temperature, pressure and flow of the chemical reaction process is still the fundamental problem of the waste residue, waste water and waste gas discharge of chemical enterprises. SUMMARY

[0003] The utility model provides a chemical production device for reaction process intensification, the device and the whole process of chemical reaction are linked with computer distributed control system (DCS), so that the prescribed proportion of each material can enter the customized mixing cavity simultaneously and continuously, high shear homogenization is carried out, and then in the micro channel reaction combination, the maximum degree of coupling chemical reaction is forcedly realized.

[0004] The utility model adopts the technical scheme that:

[0005] A continuous feeding intelligent chemical reaction device, including computer distributed control system DCS, material mixing cavity, speed regulating stirring motor, high shear homogenization rotor, the speed regulating stirring motor is connected with high shear homagenization rotor, and the high shear homogenization rotor is arranged in the material mixing cavity;Material import passes through solenoid valve, extrusion filter, ultrafilter, end sensor combination, solenoid valve and material mixing cavity in turn and is through;Catalyst import passes through solenoid valve, extrusion filter, ultrafilter, end sensor combination, mixing cavity pipeline, solenoid valve and material mixing cavity in turn and is through;Nitrogen replacement import passes through solenoid valve, extrusion filter, ultrafilter, end sensor combination, mixing cavity pipeline, solenoid valve and material mixing cavity in turn and is through;The material mixing cavity export passes through micro channel reactor, static mixer, reaction material header, end sensor combination, relay extrusion gear pump, single pipe static mixer, end sensor combination in proper order and forms export;The export includes circulation export, qualified product export, unqualified product export, and each export is controlled by respective solenoid valve;The static mixer is equipped with heat carrier / cold carrier jacket outside;The solenoid valve, end sensor combination, relay extrusion gear pump and speed regulating stirring motor are electrically connected with computer distributed control system DCS.

[0006] The reaction material collection pipe outlet end is communicated with the flush material inlet through an electromagnetic valve and a flush material outlet, and the material mixing cavity is communicated with the flush material outlet through two-stage electromagnetic valves; an electromagnetic valve is arranged between the electromagnetic valve before the flush material outlet and the reaction material collection pipe outlet end; the electromagnetic valve is electrically connected with the computer distributed control system DCS.

[0007] The static mixer is a SK type static mixer with adjustable length.

[0008] The static mixer and the micro-channel reactor are position-adjustable.

[0009] A continuous feeding intelligent chemical reaction device comprises a computer distributed control system DCS, a material mixing cavity, a speed-regulating stirring motor and a high-shear homogenizing rotor, the speed-regulating stirring motor is connected with the high-shear homogenizing rotor, and the high-shear homogenizing rotor is arranged in the liquid material mixing cavity; a material inlet is communicated with the material mixing cavity through a terminal sensor combination and an electromagnetic valve; a liquid / gas catalyst material inlet is communicated with the material mixing cavity through a terminal sensor combination and an electromagnetic valve in one way; the other way is a backwashing mechanism, the liquid / gas catalyst material inlet is communicated with an upper buffer collection pipe through an electromagnetic valve, and the lower buffer collection pipe is communicated with a backwashing residual liquid outlet through an electromagnetic valve; a micro-channel reactor is arranged between the upper buffer collection pipe and the lower buffer collection pipe; the upper buffer collection pipe forms an outlet through a static mixer, a single-pipe series static mixer group and a terminal sensor, the outlet comprises a circulation outlet, a qualified product outlet and an unqualified product outlet, and each outlet is controlled by a respective electromagnetic valve; the lower buffer collection pipe is communicated with the material mixing cavity; the static mixer and the single-pipe series static mixer group are each provided with a heat carrier / cold carrier jacket; and the electromagnetic valve, the terminal sensor combination and the speed-regulating stirring motor are electrically connected with the computer distributed control system DCS.

[0010] A continuous feeding intelligent chemical reaction device comprises a computer distributed control system DCS, a material mixing cavity, a speed-regulating stirring motor and a high-shear homogenizing rotor, the speed-regulating stirring motor is connected with the high-shear homogenizing rotor, and the high-shear homogenizing rotor is arranged in the liquid material mixing cavity; a material inlet is communicated with the material mixing cavity through a terminal sensor combination and an electromagnetic valve; a liquid / gas catalyst material inlet is communicated with the material mixing cavity through a terminal sensor combination and an electromagnetic valve in one way; the other way is a backwashing mechanism, the liquid / gas catalyst material inlet is communicated with an upper buffer collection pipe through an electromagnetic valve, and the lower buffer collection pipe is communicated with a backwashing residual liquid outlet through an electromagnetic valve; a micro-channel reactor is arranged between the upper buffer collection pipe and the lower buffer collection pipe; the static mixer and the single-pipe series static mixer group are each provided with a heat carrier / cold carrier jacket; and the electromagnetic valve, the terminal sensor combination and the speed-regulating stirring motor are electrically connected with the computer distributed control system DCS.

[0011] The utility model discloses a chemical reaction device, which comprises a chemical reaction device body, a three-way pipeline and an electromagnetic valve are arranged at a specified position of the chemical reaction device body, and the three-way pipeline and the electromagnetic valve are connected with the chemical reaction device body. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structure schematic view of the utility model embodiment 1.

[0013] Figure 2 It is a structure schematic view of the utility model embodiment 2.

[0014] Figure 3 It is a structure schematic view of the utility model embodiment 3. DETAILED DESCRIPTION

[0015] The utility model will be further explained in connection with the drawings and specific production practice.

[0016] Embodiment 1, refer to Figure 1A continuous feeding intelligent chemical reaction device, comprising a computer distributed control system DCS, a material mixing cavity 5, a speed regulating stirring motor 6 (rotating speed is 150-20000 revolutions per minute), a high shear homogenizing rotor 7, the speed regulating stirring motor 6 is connected with the high shear homogenizing rotor 7, and the high shear homogenizing rotor 7 is arranged in the material mixing cavity 5; a material inlet 1 is sequentially connected with an electromagnetic valve 20-1, an extrusion filter 2-1 (diameter is 200 mm), an ultrafilter 3-1 (pore size is less than 0.45 µm), a terminal sensor combination 4-1, an electromagnetic valve 20-3, and the material mixing cavity 5 in sequence and is in communication with the material mixing cavity 5; a catalyst inlet 15 is sequentially connected with an electromagnetic valve 20-2, an extrusion filter 2-2, an ultrafilter 3-2, a terminal sensor combination 4-2, a mixing cavity pipeline 16, an electromagnetic valve 20-4, and the material mixing cavity 5 in sequence and is in communication with the material mixing cavity 5; a nitrogen replacement inlet 18-1 is sequentially connected with an electromagnetic valve 20-13, an extrusion filter 2-2, an ultrafilter 3-2, a terminal sensor combination 4-2, a mixing cavity pipeline 16, an electromagnetic valve 20-4, and the material mixing cavity 5 in sequence and is in communication with the material mixing cavity 5; an outlet of the material mixing cavity 5 is sequentially connected with a microchannel reactor 8, a static mixer 9 (single pipe inner diameter is less than 50 mm, and the length can be increased or decreased), a reactant collecting pipe 11, a terminal sensor combination 4-3, a relay extrusion gear pump 12, a single pipe static mixer 13 (single pipe inner diameter is greater than 25 mm and the length is greater than 300 mm), a terminal sensor combination 4-4, and forms an outlet; the outlet comprises a circulating outlet 14-3, a qualified product outlet 14-1 and an unqualified product outlet 14-2, and each outlet is controlled by a respective electromagnetic valve; a heat carrier / cold carrier jacket is arranged on the periphery of the static mixer, the heat carrier / cold carrier jacket has an inlet 10-1 and an outlet 10-2; the electromagnetic valves, the terminal sensor combinations, the relay extrusion gear pumps and the speed regulating stirring motors are electrically connected with the computer distributed control system DCS; and a slag removal port 17 for maintenance is arranged at an outlet end of the reactant collecting pipe 11.

[0017] The terminal sensor combination comprises a pressure sensor-P, a temperature sensor-T, a flow sensor-L and an online quality detection sensor Q.

[0018] A specific process of Example 1 applied to the reaction of sulfonating industrial naphthalene with liquid sulfur trioxide to synthesize 1,5-naphthalene disulfonic acid is as follows:

[0019] Start the DCS computer control program, add 82.0 tons of solid industrial naphthalene and inert solvent to the original jacketed reactor according to the specified batching, slowly heat to 60℃±2, constant temperature stirring for 2 hours. Open electromagnetic valves 20-1, 20-3, 20-5, 20-11. Start the pump to output the mixture through the material inlet 1, the extrusion filter 2-1, the ultrafilter 3-1, and then the mixture is detected by the end sensor combination 4-1 to have a diameter <0.8µm, and then input into the feed mixing chamber 5 and the speed stirring motor 6 drives the high shear homogenizing rotor 7 to rotate at >150 revolutions per minute, and then pass through the micro-channel reactor 8, and then pass through the SX type static mixer 9 in the form of a tube bundle (single tube inner diameter <30mm), and then open the heat carrier / cold carrier jacket to keep the mixture temperature to 48℃±2 into the reaction material collection pipe 11. Start the relay extrusion gear pump 12 to output the mixture through the single tube static mixer 13, and then return to the original reactor through the circulation outlet 14-3 and keep the temperature at 48℃±2 (4-3).

[0020] At the same time, the commercially available raw material liquid sulfur trioxide is in the original 5.0M3 tank. Open electromagnetic valves 20-2, 20-4, 20-5, 20-10 according to the DCS instructions; at the same time, close electromagnetic valve 20-13. Start the magnetic drive pump to output liquid sulfur trioxide and raise the pressure in the catalyst inlet 15 pipe to ≯0.3MPa, which is detected by the end sensor combination 4-2. After the specified amount of sulfur trioxide is precisely filtered through the extrusion filter 2-2 and the ultrafilter 3-2, the solid impurities with a diameter <0.8µm are detected by the end sensor combination 4-2, and then the end sensor combination 4-2 automatically measures and enters the feed mixing chamber 5.

[0021] Nitrogen gas from the nitrogen displacement inlet 18-1 passes through the electromagnetic valve 20-13, the extrusion filter 2-2, and the ultrafilter 3-2 in sequence, and then the solid impurities in the industrial nitrogen gas with a diameter <0.8µm are detected by the end sensor combination 4-2, and then pass through the mixing chamber pipe 16 and the electromagnetic valve 20-4 to enter the material mixing chamber 5 to forcibly displace the air in the liquid mixture ≯2 hours to ensure the safety of the subsequent reaction process and the appearance of the reaction product. Then the DCS slowly increases the speed of the speed stirring motor 6 to >1200 revolutions per minute for continuous circulation.

[0022] Liquid industrial naphthalene mixture and liquid sulfur trioxide with specified ratio are continuously fed into the mixing chamber 5 at a flow rate and linear velocity ≮3 m / s, and are mixed by the high shear homogenizing rotor 7 within ≯0.3 s to achieve the specified high reaction coupling. The reaction material is then forced into the micro-channel reactor 8 with an inner diameter <1.0 mm to undergo chemical reaction. The reaction generates intense heat, which is quickly removed by the water in the SX type static mixer 9 pipe bundle outer heat carrier / cold carrier jacket. The temperature of the reaction material is kept constant at 50℃±2. The product of the reaction is forced into the SK type single pipe (inner diameter >50 mm X length >2 m) static mixer 13 through the lower part of the reaction material manifold 11 and the inlet of the gear pump 12, and is pressurized by the gear pump and then enters the static mixer 13 for forced aging reaction. When the conversion rate detected by the end sensor combination 4-4 reaches ≮95, the electromagnetic valve 20-9 is automatically opened, and the qualified product is discharged through the qualified product outlet 14-1 into the designated conventional reactor for additional aging reaction; otherwise, the electromagnetic valve 20-10 is automatically opened, and the unqualified product is discharged through the unqualified outlet 14-2 into the designated unit.

[0023] The micro-channel reactor clogging disposal structure is a flushing mechanism. The outlet end of the reaction material manifold 11 is connected to the flushing material inlet 18-2 through the electromagnetic valve 20-12, and the material mixing chamber 5 is connected to the flushing material outlet 19 (where the pipe pressure resistance is >1.6 MPa) through the two-stage electromagnetic valves 20-8 and 20-7. The electromagnetic valve 20-7 before the flushing material outlet and the outlet end of the reaction material manifold 11 are connected through the electromagnetic valve 20-6. The electromagnetic valves are electrically connected to the computer distributed control system DCS.

[0024] When the pressure in the micro-channel reactor 8 and the static reactor 9 and the reaction material manifold 11 suddenly rises to >0.3 MPa, the electromagnetic valves 20-1, 20-2, 20-3, 20-4, 20-5, and 20-6 are automatically closed according to the DCS instructions. At the same time, the electromagnetic valves 20-7, 20-8, and 20-12 at the specified position of the flushing pipe 18-2 are automatically opened. The end sensor combination 4-3 starts flushing the micro-channel reactor 8 and the static reactor 9 and the reaction material manifold 11 with nitrogen gas at a specified standard and pressure. The waste slag and waste gas after flushing are discharged through the flushing material outlet 19 into the designated unit. Until the pressure in the micro-channel reactor 8 and the static reactor 9 and the reaction material manifold 11 suddenly drops to <0.2 MPa, the DCS instruction resumes the process, and the material inlet 1 and the catalyst inlet 15 are continuously fed and mixed uniformly at the same time. According to the working condition changes, the micro-channel reactor 8 and the pipe bundle type static mixer 9 can be detached or replaced.

[0025] The method uses DCS program control to realize reaction process intensification, achieve maximum chemical reaction coupling, reduce over-sulfonation by-products by more than 95%, and reduce waste acid emissions by more than 90%. The method can also be used for naphthalene sulfonation by gas sulfur trioxide / concentrated sulfuric acid.

[0026] Example 2, refer to Figure 2 A continuous feeding intelligent chemical reaction device, comprising a computer distributed control system DCS, a material mixing cavity 25, a homogenizing pump 26 provided with a stator, a high-shear homogenizing rotor 27, a speed-regulating stirring motor 28, the speed-regulating stirring motor 28 being connected to the high-shear homogenizing rotor 27, the high-shear homogenizing rotor 27 being arranged in the liquid material mixing cavity 25; a material inlet 21 being communicated with the material mixing cavity 25 through a terminal sensor combination 24-1, an electromagnetic valve 23-1; a liquid / gas catalyst material inlet 22 being communicated with the material mixing cavity 25 through a terminal sensor combination 24-2, an electromagnetic valve 23-2; another route being a backwashing mechanism, the liquid / gas catalyst material inlet 22 being communicated with an upper buffer collecting pipe 31-2 through an electromagnetic valve 23-3, a lower buffer collecting pipe 31-1 being communicated with a backwashing residue liquid outlet 29 through an electromagnetic valve 23-4; a micro-channel reactor 30 being arranged between the upper buffer collecting pipe 31-2 and the lower buffer collecting pipe 31-1, an inner diameter of the micro-channel reactor 30 being less than 1.0 mm; the upper buffer collecting pipe 31-2 forming an outlet through a static mixer 32 (being a SX / SK type static mixer in the shape of a pipe bundle (an inner diameter of a single pipe being less than 30 mm)), a single-pipe series static mixer group 34, a terminal sensor combination 24-3, the outlet comprising a circulating outlet 36, a qualified product outlet 38, an unqualified product outlet 37, each outlet being controlled by a respective electromagnetic valve, the circulating outlet 36 being controlled by an electromagnetic valve 23-5, the qualified product outlet 38 being controlled by an electromagnetic valve 23-7, the unqualified product outlet 37 being controlled by an electromagnetic valve 23-6; the lower buffer collecting pipe 31-1 being communicated with the material mixing cavity 25; a heat carrier / cold carrier jacket being arranged on an outer periphery of the static mixer 32, the jacket having an inlet 33-1, an outlet 33-2; a heat carrier / cold carrier jacket being arranged on an outer periphery of the single-pipe series static mixer group 34, the jacket having an inlet 35-1, an outlet 35-2; all the electromagnetic valves, all the terminal sensor combinations, and the speed-regulating stirring motor being electrically connected to the computer distributed control system DCS.

[0027] Example 2 is applied to an addition reaction process for synthesizing metformin hydrochloride by using dimethylamine:

[0028] Start the DCS computer control program, open the electromagnetic valve 23-1, and open the material inlet 21; at the same time, open the electromagnetic valve 23-5, and open the material circulating pipeline. Add 25.0 tons of dimethylamine hydrochloride and isoamyl alcohol, 10.0 tons of distilled water, and 60M 3The materials in the original mixing tank were mixed at 45℃ for 3.0 hours. The mixed liquid material underwent precision filtration. The end sensor assembly 24-1 controlled the solid impurities in the liquid material to a diameter <0.8µm before feeding it into the inlet 21. After passing through the material mixing chamber 25, the homogenizing pump 26 was activated. Driven by the speed-regulating motor 28, the high-shear homogenizing rotor 27 gradually increased its speed to >500 rpm. The mixed material passed through the microchannel reactor 30, upper and lower manifolds 31-2 and 31-1, the static mixer 32, and the single-tube series static mixer group 34, before returning to the spare 60M via the circulation outlet 36. 3 Inside the original mixing tank, the temperature is maintained at 45±1℃ while stirring.

[0029] A 12.5-ton dicyandiamide / isoamyl alcohol mixture, formulated with dimethylamine hydrochloride and other components, undergoes precision filtration. After controlling solid impurities in the liquid material to a diameter <0.8µm using end-sensor assembly 24-2, the mixture is fed into mixing chamber 25. The high-shear homogenizing rotor 27 of the homogenizing pump 26, driven by a speed-regulating stirring motor 28, gradually increases its speed to >1200 rpm until the end-sensor assembly 24-3 detects and displays a coupling reaction state. The mixture is then returned to the spare 30M buffer via circulation outlet 36. 3 Inside the original reactor, the temperature was maintained at 50±1℃ by controlling the stirring of the reactants.

[0030] The DCS program control system modifies the process, instructing the metered dimethylamine hydrochloride mixture and dicyandiamide mixture to be continuously fed into the mixing chamber 25. A speed-regulating stirring motor 28 drives a high-shear homogenizing rotor 27 to accelerate to >1500 rpm until each material reaches a specified coupling reaction state. The reactants then enter an SX-type tubular static mixer 32, where main steam at ≥1.6 MPa is introduced into the heat carrier / cold carrier jacket, forcibly heating each reactant to 145±1℃ above the specified ratio.

[0031] The reactants then enter the microchannel reactor 30 with an inner diameter of <0.8mm for the initial reaction, and then enter the static mixer 32 via the upper manifold 31-2 to continue the temperature-controlled reaction. The heat carrier / cold carrier jacket of the static mixer 32 controls the reactants to maintain a temperature of 145±1℃ for continued forced stirring. The reactants then enter a single-tube series static mixer group 34 (SK type single tube (length ≥3m)). The temperature of the heat carrier / cold carrier jacket is controlled to maintain the reactants at 145±1℃ for continued forced stirring. When the dicyandiamide residue in the reactants is detected by the end sensor assembly 24-3 to be ≤0.1%, indicating a successful reaction, the DCS program commands the opening of solenoid valve 23-7 to discharge the reactants through the qualified product outlet 38; otherwise, the program switches to opening solenoid valve 23-6 to discharge the reactants through the unqualified product outlet 37.

[0032] The post-reaction qualified product can be injected into the original 10M 3 The reaction is carried out in a conventional reactor with stirring. The reactor is kept in a stirring state, vacuumed to <0.09 MPa, and the cold carrier jacket is kept at 150°C to continue distillation to remove most of the water. Then, the product, dimethylbiguanide hydrochloride, is obtained in the form of white transparent needle-shaped crystals with a melting point of 223±0.5°C. The product yield can reach more than 95% and the purity can reach more than 99.9% using this production process.

[0033] Example 2 is applied to the steam-heated concentration production process of crude cystine hydrochloride:

[0034] The DCS computer control program is started, and 4 tons of crude cystine hydrochloride aqueous solution (I mother) after precise filtration are input into the conventional 5M 3 The enamel reaction kettle is started, and the copper-nickel alloy screw pump is used to output the I mother and return it to the reaction kettle for circulation for >20 minutes.

[0035] The program control system is changed to the process, and >0.5 MPa water vapor after precise filtration is input from the liquid / gas catalyst material inlet 22. At the same time, the I mother after precise filtration is input into the mixing chamber 25 at the specified linear speed through the screw pump material inlet 21. The two materials with the specified proportion are forced to mix uniformly in <0.3 s, and then enter the <1.0 mm inner diameter micro-channel reactor 30 for deep coupling. Then, it enters the copper-nickel alloy steel pipe bundle type static mixer 32 for heating with <1.6 MPa main steam, and the mixture temperature is kept at 122°C±1. The I mother and water vapor mixture enters the single pipe (length >2 m) single pipe series static mixer group 34. The hot carrier / cold carrier jacket keeps the mixture at >130°C for continuous forced vapor / liquid mixing. After detection by the end sensor combination 24-3, it is injected into the standby conventional 5M 3 The enamel reaction kettle is started, and the copper-nickel alloy screw pump is used to output the I mother and return it to the reaction kettle for circulation for >20 minutes.

[0036] In abnormal conditions, the mixture material may be blocked by L-arginine crystals, causing the system pressure to suddenly rise to >0.5 MPa. At this time, the control program instruction is changed to the process, and the electromagnetic valves 23-1, 23-2, 23-5, 23-6, and 23-7 are closed, while the electromagnetic valves 23-3 and 23-4 are opened for >0.5 MPa water vapor 22 backwashing of the micro-channel reactor 30.

[0037] This method can reduce the dehydration time of crude cystine hydrochloride aqueous solution (I mother) by more than 18%. The product L-arginine has a stable recrystallization point that is increased by more than 30% compared to the original process.

[0038] Example 3, see Figure 3 A continuous feeding intelligent chemical reaction device, comprising a computer distributed control system (DCS), a continuous polymerization reaction device cylinder 39 (internal coated with fluorine paint or enamel), a speed-regulating stirring motor 45, a high-shear homogenizing rotor 42, the speed-regulating stirring motor 45 being connected to the high-shear homogenizing rotor 42, which is arranged in the continuous polymerization reaction device cylinder 39; a material inlet 40 being communicated with the continuous polymerization reaction device cylinder through a terminal sensor combination 47-1 and an electromagnetic valve 48-1, and a catalyst inlet 41 being communicated with the continuous polymerization reaction device cylinder 39 through a terminal sensor combination 47-2 and an electromagnetic valve 48-2; the high-shear homogenizing rotor 42 being connected to the speed-regulating stirring motor 45 through a transmission stirring shaft 44 and sealed by dynamic seals 43-1 and 43-2 inside and outside the continuous polymerization reaction device cylinder 39; an outlet of the continuous polymerization reaction device cylinder 39 forming an outlet including a qualified product outlet 50 and an unqualified product outlet 51 through a terminal sensor combination 47-3, each outlet being controlled by a respective electromagnetic valve, the qualified product outlet 50 being controlled by an electromagnetic valve 48-3, and the unqualified product outlet 51 being controlled by an electromagnetic valve 48-4; a hot / cold carrier pipeline 46 being arranged in the continuous polymerization reaction device cylinder; and a reaction material sludge guide vane 49 (a poor circular arc degree < 300) being arranged in the continuous polymerization reaction device cylinder 39.

[0039] Example 3 is applied to a 3000 tons / year acrylic fiber production device in Lanzhou, acrylic polymerization acrylonitrile. Start DCS program control system, recycle monomer through liquid material import 40 for circulation > 0.5 hours; The specified mixing ratio of acrylonitrile AN and vinyl acetate VAc and recycled monomer is mixed in the original mixing kettle > 3 hours, and precision filtration circulation is carried out; The specified mixing ratio of industrial distilled water, initiator, activator and regulator is mixed in the original mixing kettle > 3 hours, and precision filtration circulation is carried out. Two kinds of mixed components are combined through DCS link end sensor 47-1, 47-2 online quality detection, and then input into continuous polymerization reaction device cylinder 39 through pipeline by metering pump, and then mixed uniformly through > 150 rpm high speed, high polish (Ra < 0.1) high shear homogenizer rotor 42 to achieve chemical coupling reaction state, and then polymerization occurs. The reaction heat is removed by heat carrier / cold carrier pipeline 46 to make the continuous polymerization reaction device cylinder 39 keep constant temperature at 55℃±2. After detecting the reaction in the liquid by end sensor combination 47-3, the residual value of raw material acrylonitrile AN is < 0.1%, which is the compliance index, and the electromagnetic valve 48-3 is opened under the instruction of the DCS program control system. The flocculent reaction product is guided to the flow outlet pipeline 50 by the guide plate 49, and then enters the original liquid slurry tank with stirring. The reaction terminator is added to the liquid slurry tank, and the PH value is controlled between 4-5. Otherwise, the program control system instructs electromagnetic valves 48-1 and 48-2 to stop feeding at the same time. The unqualified product generated in the initial stage of polymerization reaction is output through the unqualified product outlet 51 under the instruction of the program control system.

[0040] The polyacrylonitrile produced by the utility model has a molecular weight distribution of less than 1.5; and the AN / VAc ratio in the original liquid participating in the reaction is increased to more than 30%.

[0041] The static mixer in examples 1-2 can be a length-adjustable SK type static mixer according to different working conditions such as reaction temperature and pressure. The position of the static mixer and the micro-channel reactor can be adjusted according to the different positions of the reaction materials.

Claims

1. A continuous feeding intelligent chemical reaction device, comprising a computer distributed control system (DCS), a material mixing cavity, a speed-regulating stirring motor, and a high-shear homogenizing rotor, wherein the speed-regulating stirring motor is connected to the high-shear homogenizing rotor, and the high-shear homogenizing rotor is arranged in the material mixing cavity; characterized in that: The material inlet passes through the electromagnetic valve, the extrusion filter, the ultrafilter, the end sensor combination, the electromagnetic valve and the material mixing cavity in sequence; the catalyst inlet passes through the electromagnetic valve, the extrusion filter, the ultrafilter, the end sensor combination, the mixing cavity pipeline, the electromagnetic valve and the material mixing cavity in sequence; the nitrogen replacement inlet passes through the electromagnetic valve, the extrusion filter, the ultrafilter, the end sensor combination, the mixing cavity pipeline, the electromagnetic valve and the material mixing cavity in sequence; the material mixing cavity outlet passes through the microchannel reactor, the static mixer, the reaction material manifold, the end sensor combination, the relay extrusion gear pump, the single-pipe static mixer, the end sensor combination and forms the outlet; the outlet comprises a circulation outlet, a qualified product outlet and an unqualified product outlet, and each outlet is controlled by a respective electromagnetic valve; the static mixer is provided with a thermal carrier / cold carrier jacket; the electromagnetic valve, the end sensor combination, the relay extrusion gear pump and the speed-regulating stirring motor are electrically connected with the computer distributed control system DCS. ​ 2. The continuous feeding intelligent chemical reaction device according to claim 1, characterized in that: The reaction material manifold outlet end is communicated with the flush material inlet through the electromagnetic valve, and the material mixing cavity is communicated with the flush material outlet through two-stage electromagnetic valves; an electromagnetic valve is arranged between the electromagnetic valve before the flush material outlet and the reaction material manifold outlet end; and the electromagnetic valve is electrically connected with the computer distributed control system DCS. 3.The continuous feeding intelligent chemical reaction device according to claim 1 or 2, characterized in that: The static mixer is an SK type static mixer with adjustable length. 4.The continuous feeding intelligent chemical reaction device according to claim 1 or 2, characterized in that: The static mixer and the microchannel reactor are position-adjustable.

5. A continuous feeding intelligent chemical reaction device, comprising a computer distributed control system (DCS), a material mixing cavity, a speed-regulating stirring motor, and a high-shear homogenizing rotor, wherein the speed-regulating stirring motor is connected to the high-shear homogenizing rotor, and the high-shear homogenizing rotor is arranged in the liquid material mixing cavity. The material inlet is communicated with the material mixing cavity through the end sensor combination and the electromagnetic valve; the liquid / gas catalyst material inlet is communicated with the material mixing cavity through the end sensor combination and the electromagnetic valve; the other route is a backwashing mechanism, the liquid / gas catalyst material inlet is communicated with the upper buffer manifold through the electromagnetic valve, the lower buffer manifold is communicated with the backwashing residual liquid outlet through the electromagnetic valve; the microchannel reactor is arranged between the upper buffer manifold and the lower buffer manifold; the upper buffer manifold forms an outlet through the static mixer, the single-pipe series static mixer group and the end sensor, and the outlet comprises a circulation outlet, a qualified product outlet and an unqualified product outlet, and each outlet is controlled by a respective electromagnetic valve; the lower buffer manifold is communicated with the material mixing cavity; the static mixer and the single-pipe series static mixer group are both provided with a thermal carrier / cold carrier jacket; and the electromagnetic valve, the end sensor combination and the speed-regulating stirring motor are electrically connected with the computer distributed control system DCS.

6. A continuous feeding intelligent chemical reaction device, comprising a computer distributed control system (DCS), a material mixing cavity, a speed-regulating stirring motor, and a high-shear homogenizing rotor, wherein the speed-regulating stirring motor is connected to the high-shear homogenizing rotor, and the high-shear homogenizing rotor is arranged in a continuous polymerization reaction device cylinder. The material inlet is communicated with the continuous polymerization device cylinder through the end sensor combination and the electromagnetic valve, and the catalyst inlet is communicated with the continuous polymerization device cylinder through the end sensor combination and the electromagnetic valve; the high-shear homogenizing rotor is sealed by a dynamic seal; the continuous polymerization device cylinder outlet forms an outlet through the end sensor combination, and the outlet comprises a qualified product outlet and an unqualified product outlet, and each outlet is controlled by a respective electromagnetic valve; the continuous polymerization device cylinder is provided with a thermal carrier / cold carrier pipeline.

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