Efficient heat transfer chemical microchannel reactor

Abstract

The invention discloses an efficient heat transfer chemical microchannel reactor, which adopts a modular five-layer stacked structure to form a core mixing unit, and is characterized in that efficient mass transfer and heat exchange are realized through the synergistic effect of three types of passive mixing strengthening units; then, the secondary flow is cut by a unique intermittent threaded screw structure in the center of the cross-shaped disturbance disc, and secondary flow is generated; in the upper and lower flow channel discs, fluid is sequentially subjected to triple mixing reinforcement of the eccentric blade wheel, the inverted U-shaped groove structure and the disturbance protrusion unit; the integrated heat exchange disc adopts a C-shaped alternate overturning runner design; in addition, the equipment is provided with a miniature spherical regulating valve, so that the flux is controllable, and a bidirectional flow channel design is adopted; the mixing path is prolonged. According to the design, the space utilization rate and the mixing efficiency are remarkably improved, the negative influence of active mixing is avoided, the device is particularly suitable for refined continuous flow treatment, and a modular structure supports flexible stretching of a reaction process.

Description

Technical Field

[0001] The invention relates to the technical field of micro-chemical equipment, in particular to a chemical micro-channel reactor with high-efficiency heat transfer. Background Art

[0002] As a core component of microchemical technology, the microchannel reactor (MCR) achieves efficient mixing and precise control of reactants through its micron-scale channel structure. This effectively overcomes the shortcomings of traditional kettle reactors, such as low mass and heat transfer efficiency, long reaction times, numerous side reactions, and significant amplification effects. It has become a key technology for achieving chemical safety and green chemistry. Its micron-scale channels significantly increase the specific surface area, boosting mass transfer rates by one to two orders of magnitude compared to traditional reactors. Its high heat flux characteristics enable millisecond-level temperature response, making it particularly suitable for precise temperature control of highly exothermic reactions.

[0003] Micromixers are divided into active mixers and passive mixers according to whether they require external energy. Active mixing uses some active controls applied to the fluid to achieve fluid mixing, such as moving parts (blades) (which may break cells), changing the flow parameters of the fluid at the inlet such as pressure and velocity (high pressure rushing into the mixer), external fields such as ultrasound (which will produce bubbles in the water and may affect cells), electric fields, thermal flow fields and electromagnetic fields. Passive micromixers are micromixers that do not require any external energy input. They only need a fluid pump and pressure drop to drive the flow. This is achieved by changing the geometry or setting obstacles in the fluid flow path. The purpose is to generate secondary flow in the local microchannel to enhance mixing. The present invention focuses on designing a new device to improve the fluid mixing effect. Its main effect is to promote the formation of chaotic convection during the fluid mixing process, and can meet the production needs of the microchemical industry and can finely control chemical reactions. Summary of the Invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and, through a unique structural design, significantly improve the mass transfer efficiency of the fluid in the microchannel, shorten the reaction time, and increase the chemical reaction rate to provide a high-efficiency heat transfer chemical microchannel reactor.

[0005] The object of the present invention is achieved by the following technical solutions: a chemical microchannel reactor with high heat transfer efficiency, a mixer comprising a flow channel plate, a cross-shaped disturbance plate, a heat exchange plate, a valve stem, a Y-shaped feed port and a micro-spherical regulating valve. The flow channel plate comprises an upper flow channel plate and a lower flow channel plate, and the centers of the upper flow channel plate and the lower flow channel plate have a channel with a threaded structure. The liquid partition wall is provided with an elliptical notch every 180 degrees, and the elliptical notch surface forms a flow channel. The liquid partition wall and the elliptical groove are staggered in the flow channel. The liquid partition wall is provided with an elliptical notch containing an eccentric blade wheel every half circle. The elliptical grooves are arranged from the inner and outer sides with the tail end and the head end facing the notch, respectively, and each elliptical groove contains 16; Preferably, the raised portion of the cross-shaped disturbance disk is provided with an intermittent threaded screw structure with a pitch of 8.3 mm and a thread height of 90 mm. A fan ring cut of 10.81° is performed every 14.91° along the center. The disc-shaped portion of the cross-shaped disturbance disk contains eight disturbance protrusion units every 45° on both sides. The heat exchange disk includes an upper heat exchange disk and a lower heat exchange disk, and is provided with an oil inlet and an oil outlet. The shape of the heat exchange cavity of the heat exchange disk is similar to the letter "C". The flow channel is axially symmetrical in front view, and is in contact with the reaction liquid alternating layer. It flows from the oil inlet through the C-shaped fluid channel and then flows to the oil outlet. The oil inlet and oil outlet of the lower heat exchange disk are opposite to those of the upper heat exchange disk.

[0006] Preferably, the center distance between two adjacent disturbance protrusion units that are closer is 5 mm, the center distance between two adjacent disturbance protrusion units that are farther away is 10 mm, the distance between the center of the innermost disturbance protrusion unit and the center of the disk is 44.1 mm, and there are 64 of them in total, and there are eight elliptical notches in total.

[0007] Preferably, the Y-shaped feed port contains two inlets, each inlet contains a pipe, and the two pipes then converge into one pipe at a 60° angle and then lead to the oil inlet of the core mixing unit. The flow channel plate, cross-shaped disturbance plate, and heat exchange plate are stacked, and the flow channel surface of the flow channel plate faces the cross-shaped disturbance plate, and a closed space is formed through tight fit on the periphery.

[0008] Preferably, the mixer cuts the liquid through the cooperation of the intermittent thread screw structure with the flow channel plate and the central thread of the heat exchange plate, and combines the synergistic effect of the eccentric blade wheel, the zigzag groove, and the disturbance protrusion unit to achieve multi-stage mixing enhancement and efficient heat transfer of the fluid in the microchannel.

[0009] Preferably, a T-shaped channel is dug in the inner ball core of the micro-spherical regulating valve, and is composed of a through hole and a blind hole perpendicular to the channel. The valve stem is perpendicular to the plane where the channel is located and controls the T-shaped channel to rotate between 0° and 90°. Under normal circumstances, the fluid flows in the positive direction through the through hole, and the blind hole forms a seal with the inner wall of the micro-ball valve. Under usage conditions, the T-shaped channel rotates 90°, the blind hole is connected to the fluid inlet, the original outflow through hole forms a seal with the inner wall of the micro-ball valve, and the original inflow through hole is connected to the side liquid outlet.

[0010] Preferably, the valve stem is fastened and connected by two micro nuts and a valve bolt, and the flow channel is controlled by controlling the T-shaped channel ball core in the micro spherical regulating valve to rotate between 0-90 degrees.

[0011] Preferably, the eccentric blade wheel has a rotating shaft in the center, and the blades are located on the outside of the rotating shaft, which are located on one side of the elliptical notch. The eccentric design promotes the formation of a circulation of the liquid and enhances the fluid disturbance. The V-shaped groove is located at the position where the liquid flows through the flow channel disk, and is concave downward by 1 mm. The shape of the concave groove is similar to that of the V-shaped groove. From the inside and outside of the elliptical notch of the eccentric wheel structure, the head end and the tail end are arranged toward the notch respectively, and the liquid is broken up and reorganized to form a chaotic flow.

[0012] Preferably, the disturbance protrusion unit is composed of two small hemispheres and one large hemisphere, the center of the large hemisphere is collinear with the centers of the two small hemispheres, and a semi-cylindrical through hole with a radius of 1 mm passes through the centers of the three spheres. In the working state, the disturbance protrusion unit is suspended above the flow channel in the flow channel disk, cutting the liquid into two parts, inner and outer, to form a circulation, and since the inner layer flow is smaller than the outer layer flow, it can form a speed difference.

[0013] Preferably, the direction of the fluid is adjusted according to the position of the heat exchange disk, and the intermittent threaded screw structure adopts a design to block backflow, which promotes the liquid to generate secondary flow. The micro-spherical regulating valve controls the mixer flux by opening or closing, realizing multi-flux mode switching, and adopts a modular design. The reaction process length can be adjusted by increasing or decreasing the number of stacking layers. The flow channel disk and the cross-shaped disturbance disk are tightly matched through the four peripheral through holes and the central threaded structure to ensure efficient mixing of the fluid in a confined space.

[0014] Preferably, the two feed ports and the top design of the Y-shaped feed port ensure that the two fluids are initially mixed at the intersection of the pipes, and the uniformity of fluid distribution is enhanced through the peripheral through-holes on the disc surface. The mixer realizes a continuous flow reaction mode of low-end suction and high-end output through a constant flow pump.

[0015] The present invention has the following advantages: 1. The present invention uses a constant flow pump to pump two streams of reaction liquid into a Y-shaped tube, and the two streams of liquid meet for the first time at the intersection of the pipes to complete preliminary mixing. The mixed liquid flows into the central threaded channel and is continuously cut and converged by the intermittent protrusion screws in the cross-shaped disturbance disk and the threaded channel, so that the secondary flow is formed to enhance the mixing. The mixed liquid then flows into the mixed part formed by the upper flow channel disk and the cross-shaped disturbance disk. The liquid diffuses from the inside to the outside and undergoes three different types of mixing enhancement, namely: first, the eccentric blade wheel structure. When the liquid flows through the elliptical notch, due to the design of the eccentric blade wheel, the outward flowing liquid pushes the blades to rotate, prompting the liquid to form a circulation at the elliptical notch, thereby enhancing the liquid's disturbed flow; second, the zigzag groove structure. The liquid diffuses outwards from the notch at both ends due to the push of the pump. After passing through the zigzag groove, the liquid is continuously broken up and reorganized to form a chaotic flow; third, the disturbance protrusion unit. When the liquid flows through the disturbance protrusion unit in the cross-shaped disturbance disk, the liquid is It is cut into two parts, the upper and lower parts have inconsistent flow rates, the flow rate at the inner through-hole is small, and the flow rate at the outer layer is large. The liquids in the upper and lower parts form a circulation. After flowing through the upper flow channel plate, the liquid flows along the notch of the outermost layer of the upper flow channel plate and enters the part formed by the lower flow channel plate and the cross-shaped disturbance plate. The liquid flows inward from the periphery of the lower flow channel plate, passes through three different mixing structures in the reverse direction, and is mixed and enhanced again. When the mixer flux needs to be increased, the micro-spherical regulating valve is opened and flows through the overall mixing structure with the same unit flux; when the mixer flux does not need to be increased, the micro-spherical regulating valve is closed and the final liquid is collected on the outside of the valve.

[0016] The combined effects of these various mixing methods significantly improve the mixing efficiency of the device. A constant-flow pump, with low-end pumping and high-end output, enables a continuous flow of the reaction liquid. The use of a discontinuous thread structure significantly improves space utilization, and a modular design allows the reaction process to be extended or shortened as needed, addressing the limitations of traditional chemical processes.

[0017] The heat exchange plate below the flow channel plate consists of an oil inlet, a heat exchange cavity, and an oil outlet. Heat exchange liquid is injected, and heat and mass transfer occurs through the contact between the heat exchange cavity and the interactive layer of the reaction liquid to achieve the purpose of heat exchange. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 Schematic diagram of the structure of the C-shaped fluid channel in the present invention; Figure 3 Schematic diagram of the structure of the lower heat exchange plate in the present invention; Figure 4 Schematic diagram of the structure of the lower flow channel plate in the present invention; Figure 5This is a schematic structural diagram of a screw structure with an intermediate interrupted thread according to the present invention; Figure 6 Schematic diagram of the structure of the micro spherical regulating valve in the present invention; Figure 7 Schematic diagram of the structure of the valve stem in the present invention; Figure 8 Schematic diagram of the structure of the Y-shaped feed port in the present invention; Figure 9 Schematic diagram of the structure of the valve core in the present invention; Figure 10 Schematic diagram of the structure of the T-shaped channel in the present invention; Figure 11 Schematic diagram of the structure of the core mixing unit in the present invention; In the figure, a mixer 1, a cross-shaped disturbance disk 2, an upper heat exchange disk 3, a valve stem 4, a Y-shaped feed port 5, a micro-spherical regulating valve 6, an upper flow channel disk 7, a lower flow channel disk 8, a liquid partition wall 9, an elliptical notch 10, a V-shaped groove 11, an intermittent threaded screw structure 12, a disturbance protrusion unit 13, an inlet 14, an oil inlet 15, an eccentric blade wheel 16, a heat exchange chamber 17, a large bolt 18, a large nut 19, a channel with a threaded structure 20, a small bolt 21, a small nut 22, a micro nut 23, a valve bolt 24, a T-shaped channel 25, a through hole 26, a blind hole 27, a handle 28, a valve core 29, a valve housing 30, and a lower heat exchange disk 31 are shown. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings, and the protection scope of the present invention is not limited to the following: like Figures 1 to 11 As shown, a chemical microchannel reactor with high efficiency heat transfer, the mixer 1 includes a flow channel plate, a cross-shaped disturbance plate 2, a heat exchange plate, a Y-shaped feed port 5 and a microreactor of a micro-spherical regulating valve 6, the micro-spherical regulating valve 6 includes a valve stem 4, a handle 28, a valve core 29, and a valve housing 30, the flow channel plate includes an upper flow channel plate 7 and a lower flow channel plate 8, the center of the upper flow channel plate 7 and the lower flow channel plate 8 has a channel 20 with a threaded structure, the liquid partition wall 9 is provided with an elliptical notch 10 every 180°, the elliptical notch 10 surface forms a flow channel, the liquid partition wall and the elliptical groove 11 are staggered in the flow channel, the liquid partition wall 9 is provided with an elliptical notch 10 containing an eccentric blade wheel every half circle, the elliptical grooves 11 are arranged from the inner and outer sides with the tail end and the head end facing the notch, and each annular surface of the elliptical groove 11 contains 16; In this embodiment, the raised portion of the cross-shaped disturbance disk 2 is provided with an intermittent threaded screw structure 12 with a pitch of 8.3 mm and a thread height of 90 mm. A fan ring cut of 10.81° is performed every 14.91° along the center. Eight disturbance protrusion units 13 are provided on both sides of the disk-shaped portion of the cross-shaped disturbance disk 2 at every 45°. The heat exchange disk includes an upper heat exchange disk 3 and a lower heat exchange disk 31, and is provided with an oil inlet 15 and an oil outlet 16. The heat exchange cavity 17 of the heat exchange disk is shaped similar to the letter "C". The flow channel is axially symmetrical in front view and contacts the reaction liquid in alternating layers. The flow enters from the oil inlet 15 through the C-shaped fluid channel and then flows to the oil outlet 16. The oil inlet and oil outlet of the lower heat exchange disk 31 are opposite to those of the upper heat exchange disk 3. At this time, the projected area of ​​the heat exchange oil flow channel coincides with the height of the circular ring where the channel plate's groove is located.

[0020] In this embodiment, the center distance between two adjacent disturbance protrusion units 13 that are closer is 5 mm, the center distance between two adjacent disturbance protrusion units 13 that are farther away is 10 mm, the distance between the center of the innermost disturbance protrusion unit 13 and the center of the disk is 44.1 mm, there are 64 in total, and there are eight elliptical notches 10 in total.

[0021] In this embodiment, the Y-shaped feed port 5 contains two inlets 14, each inlet 14 contains a pipe, and the two pipes then converge into one pipe at a 60° angle and then lead to the oil inlet 15 of the core mixing unit. The flow channel plate, the cross-shaped disturbance plate 2, and the heat exchange plate are stacked, and the flow channel surface of the flow channel plate faces the cross-shaped disturbance plate 2, and a closed space is formed through tight fit on the periphery.

[0022] In this embodiment, the mixer 1 cuts the liquid by cooperating with the center thread of the flow channel plate and the heat exchange plate through the intermittent thread screw structure 12, and combines the synergistic effect of the eccentric blade wheel 16, the zigzag groove 11, and the disturbance protrusion unit 13 to achieve multi-stage mixing enhancement and efficient heat transfer of the fluid in the microchannel.

[0023] In this embodiment, a T-shaped channel 25 is dug in the inner ball core of the micro-spherical regulating valve 6, and is composed of a through hole 26 and a blind hole 27 perpendicular to the channel. The valve stem 4 is perpendicular to the plane where the channel is located and controls the T-shaped channel to rotate between 0° and 90°. Under normal circumstances, the fluid flows in the positive direction through the through hole, and the blind hole forms a seal with the inner wall of the micro-ball valve. Under usage conditions, the T-shaped channel rotates 90°, and the blind hole is connected to the fluid inlet. Under normal circumstances, the outflow through hole forms a seal with the inner wall of the micro-ball valve; the inflow through hole is connected to the side liquid outflow outlet.

[0024] In this embodiment, the valve stem 4 is fastened by two micro nuts and a valve bolt, and the flow channel is controlled by controlling the T-shaped channel ball core in the micro spherical regulating valve 6 to rotate between 0-90 degrees.

[0025] In this embodiment, there is a rotating shaft in the center of the eccentric blade wheel 16, and the blades are located on the outside of the rotating shaft, which are located on one side of the elliptical notch 10. The eccentric design promotes the formation of a circulation of the liquid and enhances the fluid disturbance. The v-shaped groove 11 is located at the position where the liquid flows through the flow channel disk, and is concave downward by 1 mm. The shape of the concave groove is similar to the v-shaped groove. From the inside and outside of the elliptical notch 10 of the eccentric wheel structure, the head end and the tail end are arranged toward the notch respectively, and the liquid is broken up and reorganized to form a chaotic flow.

[0026] In this embodiment, the disturbance protrusion unit 13 is composed of two small hemispheres and one large hemisphere. The center of the large hemisphere is collinear with the centers of the two small hemispheres. A semi-cylindrical through hole with a radius of 1 mm passes through the centers of the three spheres. In the working state, the disturbance protrusion unit 13 is suspended above the flow channel in the flow channel disk, cutting the liquid into two parts, inner and outer, to form a circulation. Since the inner layer flow is smaller than the outer layer flow, a speed difference can be formed.

[0027] In this embodiment, the direction of the fluid is adjusted according to the position of the heat exchange disk. The intermittent threaded screw structure 12 adopts a design to block backflow, which promotes the liquid to generate secondary flow. The micro-spherical regulating valve 6 controls the mixer flux by opening or closing, realizing multi-flux mode switching, and adopts a modular design. The reaction process length can be adjusted by increasing or decreasing the number of stacking layers. The flow channel disk and the cross-shaped disturbance disk 2 are tightly matched through the four peripheral through holes and the central threaded structure to ensure efficient mixing of the fluid in a confined space.

[0028] In this embodiment, the two feed ports and the top design of the Y-shaped feed port 5 ensure that the two fluids are preliminarily mixed at the intersection of the pipelines, and the uniformity of fluid distribution is enhanced by the through holes on the outer periphery of the disc surface. The mixer 1 realizes a continuous flow reaction mode of low-end suction and high-end output through a constant flow pump; through holes are provided between the upper heat exchange plate 3, the upper flow channel plate 7, the cross-shaped disturbance plate 2, the lower flow channel plate 8, and the lower heat exchange plate 31, and are tightened by the action of the large bolts 18 and the large nuts 19. The small bolts 21, the small nuts 22, the micro nuts 23, and the valve bolts 24 all play a role in fixed connection.

[0029] The working principle of the present invention is as follows: when mixing the fluid, the two streams of material enter the two ends of the Y-shaped feed port 5 respectively under the action of the power source, and reach the interactive layer through the end of the pipeline. At this time, the two streams of material meet for the first time to complete the preliminary mixing; then they enter the protrusion of the intermittent threaded screw structure 12 through the end of the Y-shaped feed port 5, and are blocked by the intermittent threaded screw structure 12. The front fluid flows back upward and forms a secondary flow with the rear liquid. The reaction liquid then flows into the flow channel disk, and the eccentric blade wheel 16 is rotated by colliding with the blades of the eccentric blade wheel 16, so that the liquid forms a circulation at the elliptical notch 10, thereby enhancing the disrupted flow of the liquid. The liquid then flows into the flow channel of the zigzag groove 11 and is diverted. After the diverted liquid flows into the zigzag groove 11, the liquid diffuses outwards from the notches at both ends due to the push of the pump. After passing through the zigzag groove 11, the liquid is continuously broken up and reorganized to form a chaotic flow. After the liquid at one end is diverted, it flows through a quarter circle and collides with the liquid at the other end to form a secondary flow and flows into the next eccentric blade wheel 16 structure. Such repeated periodic disturbances cause the fluid to enter a turbulent state and improve the mixing efficiency.

[0030] Chemical reactions and heat and mass transfer may occur simultaneously in a micromixer. In most cases, a micromixer is a microreactor or micromass transfer device. The heat exchange cover below the mixer 1 consists of two heat exchange liquid ports and a heat exchange cavity. The temperature control liquid is injected into the heat exchange cavity. Chemical reactions and heat and mass transfer occur during the mixing process through the contact between the heat exchange channel and the material interaction layer, achieving the purpose of heat exchange.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A chemical microchannel reactor with high heat transfer efficiency, characterized by: The mixer includes a flow channel plate, a cross-shaped disturbance plate, a heat exchange plate, small bolts, small nuts, large bolts, large nuts, miniature nuts, valve bolts, a liquid barrier wall, a Y-shaped feed port, and a microreactor of a micro-spherical regulating valve. The micro-spherical regulating valve includes a valve stem, a valve core, a valve housing, and a handle. The flow channel plate includes an upper flow channel plate and a lower flow channel plate. The upper flow channel plate and the lower flow channel plate have a channel with a threaded structure at the center. The liquid barrier wall is provided with an elliptical notch every 180 degrees. The elliptical notch surface forms a flow channel. The liquid barrier wall and the elliptical groove are staggered in the flow channel. The liquid barrier wall is provided with an elliptical notch containing an eccentric blade wheel every half circle. The elliptical grooves are arranged from the inner and outer sides with the tail end and the head end facing the notch, and each elliptical groove contains 16; The raised portion of the cross-shaped disturbance disk is provided with an intermittent thread screw structure with a pitch of 8.3mm and a thread height of 90mm. A fan ring cut of 10.81° is performed every 14.91° along the center. The disc-shaped portion of the cross-shaped disturbance disk contains eight disturbance protrusion units every 45° on both sides. The heat exchange disk includes an upper heat exchange disk and a lower heat exchange disk, and is provided with an oil inlet and an oil outlet. The shape of the heat exchange cavity of the heat exchange disk is similar to the letter "C". The flow channel is axially symmetrical in front view, and is in contact with the reaction liquid in alternating layers. The flow flows from the oil inlet through the C-shaped fluid channel and then flows to the oil outlet. The oil inlet and oil outlet of the lower heat exchange disk are opposite to those of the upper heat exchange disk.

2. A chemical microchannel reactor with high heat transfer efficiency according to claim 1, characterized in that: The center distance between two adjacent disturbance protrusion units that are closer is 5 mm, the center distance between two adjacent disturbance protrusion units that are farther away is 10 mm, the distance between the center of the innermost disturbance protrusion unit and the center of the disk is 44.1 mm, and there are 64 disturbance protrusions in total. There are eight elliptical notches in total.

3. The chemical microchannel reactor with high heat transfer efficiency according to claim 1, characterized in that: The Y-shaped feed port contains two inlets, each of which contains a pipe. The two pipes then converge into one pipe at a 60° angle and then lead to the oil inlet of the core mixing unit. The flow channel plate, cross-shaped disturbance plate, and heat exchange plate are stacked, and the flow channel surface of the flow channel plate faces the cross-shaped disturbance plate, and a closed space is formed through tight fit on the periphery.

4. The chemical microchannel reactor with high heat transfer efficiency according to claim 3, characterized in that: The mixer cuts the liquid through the cooperation of the intermittent thread screw structure with the flow channel plate and the central thread of the heat exchange plate, and combines the synergistic effect of the eccentric blade wheel, the zigzag groove and the disturbance protrusion unit to achieve multi-stage mixing enhancement and efficient heat transfer of the fluid in the microchannel.

5. The chemical microchannel reactor with high heat transfer efficiency according to claim 1, characterized in that: The inner ball core of the micro ball regulating valve is dug with a T-shaped channel, and is composed of a through hole and a blind hole perpendicular to the channel. The valve stem is perpendicular to the plane where the channel is located and controls the T-shaped channel to rotate between 0° and 90°. Under normal circumstances, the fluid flows in the positive direction through the through hole, and the blind hole forms a seal with the inner wall of the micro ball valve. Under usage conditions, the T-shaped channel rotates 90°, the blind hole is connected to the fluid inlet, the original outflow through hole forms a seal with the inner wall of the micro ball valve, and the original inflow through hole is connected to the side liquid outflow outlet.

6. The chemical microchannel reactor with high heat transfer efficiency according to claim 1, characterized in that: The valve stem is tightly connected by two micro nuts and a valve bolt, and the flow channel is controlled by controlling the T-shaped channel ball core in the micro spherical regulating valve to rotate between 0-90 degrees.

7. The chemical microchannel reactor with high heat transfer efficiency according to claim 1, characterized in that: There is a rotating shaft in the center of the eccentric blade wheel, and the blades are located on the outside of the rotating shaft, which are located on one side of the elliptical notch. The eccentric design promotes the formation of liquid circulation and enhances fluid disturbance. The wedge-shaped groove is located at the position where the liquid flows through the flow channel disk, and is concave 1mm downward. The shape of the concave groove is similar to the wedge. From the inside and outside of the elliptical notch of the eccentric wheel structure, the head end and the tail end are arranged toward the notch respectively, and the liquid is broken up and reorganized to form a chaotic flow.

8. The chemical microchannel reactor with high heat transfer efficiency according to claim 1, characterized in that: The disturbance protrusion unit is composed of two small hemispheres and one large hemisphere. The center of the large hemisphere is collinear with the centers of the two small hemispheres. A semi-cylindrical through hole with a radius of 1 mm passes through the centers of the three spheres. In the working state, the disturbance protrusion unit is suspended above the flow channel in the flow channel disk, cutting the liquid into two parts, inner and outer, to form a circulation. Since the inner layer flow is smaller than the outer layer flow, a speed difference can be formed.

9. The chemical microchannel reactor with high heat transfer efficiency according to claim 1, characterized in that: The fluid direction is adjusted according to the position of the heat exchange plate. The intermittent threaded screw structure adopts a backflow blocking design to promote the secondary flow of the liquid. The micro-spherical regulating valve controls the mixer flux by opening or closing to achieve multi-flux mode switching. It also adopts a modular design and can adjust the reaction process length by increasing or decreasing the number of stacking layers. The flow channel plate and the cross-shaped disturbance plate are tightly matched through the four peripheral through holes and the central thread structure to ensure efficient mixing of the fluid in a confined space.

10. The chemical microchannel reactor with high heat transfer efficiency according to claim 1, characterized in that: The two feed ports and the top design of the Y-shaped feed port ensure that the two fluids are initially mixed at the intersection of the pipes, and the uniformity of fluid distribution is enhanced through the peripheral through-holes on the disc surface. The mixer realizes a continuous flow reaction mode of low-end suction and high-end output through a constant flow pump.

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