CN-122006623-A - Plasma electrolytic oxidation catalytic transesterification reaction device

CN122006623ACN 122006623 ACN122006623 ACN 122006623ACN-122006623-A

Abstract

The invention relates to the technical field of plasma catalysis and discloses a plasma electrolytic oxidation catalytic transesterification reaction device which comprises a base, wherein a reaction barrel is fixedly arranged at the top of the base, a flow guide pipe is symmetrically arranged on the outer surface of the reaction barrel, a valve is fixedly arranged on the outer side of the middle part of the flow guide pipe, an induction sensor is arranged on the inner side of the valve, an upper layer plate and a middle layer plate are arranged on the inner side of the reaction barrel, a main mandrel is arranged above the reaction barrel in a penetrating manner, and a driving motor is fixedly arranged at the top end of the main mandrel. According to the invention, through combining dynamic discharge and bubble catalysis, a graphite electrode is newly added, electrode area and interval parameters are optimized, catalytic active sites are greatly increased, and high-density plasma active species are excited by utilizing the internal environment of the bubbles, so that accurate and uniform injection of plasma energy is realized, catalytic selectivity of transesterification, amino acid hydrolysis and organic acid aging is improved, side reactions are reduced, and flavor components of seasonings such as soy sauce, vinegar and the like are prevented from being damaged.

Inventors

XIE WENQING
DUAN SHIPENG
TU HUIJIE
SUN FUQIANG
XU XINGSHENG

Assignees

领航国创(厦门)等离子技术有限公司
福建省万旗科技陶瓷有限公司

Dates

Publication Date: 20260512
Application Date: 20260413

Claims (10)

1. The plasma electrolytic oxidation catalytic transesterification reaction device comprises a base, wherein a reaction barrel is fixedly arranged at the top of the base, a flow guide pipe is symmetrically arranged on the outer surface of the reaction barrel, a valve is fixedly arranged on the outer side of the middle part of the flow guide pipe, an induction sensor is arranged on the inner side of the valve, an upper layer plate and a middle layer plate are arranged on the inner side of the reaction barrel, a main mandrel is arranged above the reaction barrel in a penetrating manner, and a driving motor is fixedly arranged at the top end of the main mandrel, and the device is characterized by further comprising: The vortex part is arranged in the reaction barrel and is used for forming a vortex collision flow field at the bottom of the reaction barrel so as to pretreat the feed liquid and preliminarily mix the gas, strengthen the initial contact efficiency of a gas-liquid-solid three-phase catalytic interface, improve the initial catalytic activity of the nano catalyst and adapt to catalytic reactions such as transesterification, amino acid hydrolysis, organic acid aging and the like of a liquid phase system; the vortex part comprises a feeding part and a hedging part, the feeding part is arranged at the end part of the flow guide pipe extending into the reaction barrel, the feeding part is connected with the hedging part, and the hedging part is arranged at the bottom of the reaction barrel; the bubble placing part is arranged above the middle layer plate and below the upper layer plate, penetrates through the inner side of the middle layer plate and the upper layer plate, is used for adaptively adjusting stirring intensity and bubble distribution according to the reactant state of the core area, ensures the uniformity of catalytic reaction, avoids byproducts generated by local catalytic transition, and ensures the reaction directionality of transesterification, amino acid hydrolysis and organic acid aging; the foam discharging part comprises a uniform piece and a foam discharging piece, the uniform piece is arranged above the middle layer plate and below the upper layer plate, the uniform piece is connected with the foam discharging piece, and the uniform piece is arranged outside the main mandrel; the adjusting part is arranged above the upper layer plate and is used for finely adjusting and controlling the hydrodynamic state of the upper layer blending area, optimizing the flavor integration of seasonings and drinks, and simultaneously controlling the feed liquid leakage rate to match the transesterification, amino acid hydrolysis and organic acid aging reaction rate of the core area; the adjusting part comprises a speed regulating piece and an auxiliary piece, the speed regulating piece is arranged above the upper layer plate, the speed regulating piece is connected with the auxiliary piece, and the auxiliary piece is arranged outside the main mandrel; The plasma excitation part is integrated in the main mandrel and comprises a graphite electrode, a spiral electrode array strip arranged in the main mandrel and a microelectrode needle embedded on the main mandrel, wherein the graphite electrode is electrically connected with the spiral electrode array strip, and when the main mandrel rotates, a dynamic sweeping discharge loop is formed between the microelectrode needle and a fixed middle layer plate and is used for exciting plasma at a gas-liquid interface of the core area, so that the full reaction area coverage and the energy accurate injection of the discharge area are realized, and the catalytic selectivity and the conversion rate of transesterification, amino acid hydrolysis and organic acid aging of a liquid phase system are cooperatively improved with a supported nano catalyst; the area calculation formula of the graphite electrode is S S is the area of the graphite electrode, In order for the operating current to be sufficient, The electrode interval between the graphite electrode and the micro electrode needle as well as between the graphite electrode and the middle layer plate is 2-3 times of the square of the area of the graphite electrode.
2. The catalytic transesterification reaction device of claim 1, wherein the feed member comprises: The installation assembly is arranged outside the main mandrel; The sealed cavity is arranged on the inner bottom wall of the reaction barrel, provides a closed initial reaction space for gas-liquid-solid three-phase catalysis, reduces the dissipation of plasma active species, and is suitable for liquid-phase catalysis systems of seasonings such as soy sauce, vinegar and the like and drinks; The ceramic spheres are arranged in the sealing cavity, the surfaces of the ceramic spheres are loaded with nano catalysts and are used for catalyzing esterification reaction and breaking bubbles flowing through the surfaces of the ceramic spheres, so that the gas-liquid catalytic interface area is increased, and the active site exposure rate of the nano catalysts is improved; The gas distribution plate is fixedly arranged at the top of the sealing cavity and connected with the gas transmission pipe and is used for uniformly dispersing input gas to the surface of the ceramic sphere, strengthening the contact between the gas and the nano catalyst and improving the synergistic catalytic effect of the plasma and the catalyst.
3. The catalytic transesterification reaction device of claim 2, wherein the counter-punch comprises: The honeycomb duct penetrates through the inner part of the sealing cavity; the gas transmission pipe penetrates through the outer side of the reaction barrel and extends to the inside of the sealing cavity; The feeding holes are formed in a plurality of parts and are arranged at the bottom end of the main mandrel; A groove matched with the gas distribution plate is formed in the middle layer plate; the bottom of the sealing cavity is provided with a notch for forming liquid reflux, enhancing vortex clash effect and prolonging the residence time of materials at the bottom of the reaction, and improving the hydrolysis and aging reaction efficiency of condiments such as soy sauce, vinegar and beverage liquid.
4. A plasma electrolytic oxidation catalytic transesterification reaction device according to claim 3, wherein the homogenizing member comprises; The locking speed cylinder is arranged below the driving motor and is positioned outside the main mandrel; The installation assembly is arranged outside the main mandrel; The rotating blades are fixedly arranged on the outer side of the installation group sleeve; The uniform piece is configured to stir the gas, liquid and solid three-phase mixture in the core area by rotating and driving the rotary blade through the main spindle, so that uniform contact of seasonings such as soy sauce, vinegar and the like and the drink feed liquid with the plasma and the graphite electrode is ensured, and the uniformity of hydrolysis, aging and transesterification is ensured.
5. The plasma electrolytic oxidation catalytic transesterification reaction device according to claim 4, wherein: the uniformity piece further includes: the electric telescopic rod is arranged at the outer side of the installation group sleeve; The angle adjusting disc is arranged at the outer side of the electric telescopic rod; the speed control plate is fixedly arranged on the outer side of the outer sleeve shell; the speed sensor is arranged at the top end of the speed control plate; The speed sensor, the speed control plate and the electric telescopic rod form a feedback regulating system, and the feedback regulating system is used for dynamically regulating the depth and angle of the rotary blade according to the fluid state monitored in real time, realizing self-adaptive variable-pitch stirring and adapting to the catalytic reaction requirements of seasonings such as soy sauce and vinegar and beverage liquid with different viscosities.
6. The catalytic transesterification reaction device of claim 5, wherein the foam piece further comprises: the gasket is fixedly arranged at the top end of the rotary blade; The through holes are formed in the outer sides of the rotating blades; The outer side of the main mandrel is provided with a through groove for guiding out bubbles formed by the feed liquid; The electric telescopic rod is internally provided with a hole groove which is used for forming a passage with the through hole on the rotary blade, so that bubbles can be conveniently introduced from the outer side of the main mandrel; an outer sleeve fixedly mounted on the outer side of the main spindle; The through holes and the inner hole grooves of the electric telescopic rod are communicated with the main mandrel through grooves to form an inner circulation passage, and the inner circulation passage is used for conveying liquid rich in bubbles and active substances upwards from the bottom, strengthening mass transfer processes in seasoning and drink liquid systems such as soy sauce and vinegar, and improving hydrolysis and aging reaction rates.
7. The catalytic transesterification reaction device of claim 1, wherein the speed regulating member comprises: The gear disc is arranged outside the main mandrel; the rotating shaft is rotatably arranged above the upper layer plate; the fixed mount is fixedly arranged at one end of the rotating shaft; The rotating disc is fixedly arranged outside the rotating shaft; the impeller is rotationally arranged at the top end of the rotating shaft; the gear plate is meshed with the rotating disc, the rotating power of the main spindle is transmitted to the impeller, the impeller generates gentle stirring in the upper-layer blending area, the flavor substances of seasonings such as soy sauce, vinegar and the like and drinks are promoted to be fused, the rate of replenishing the feed liquid to the lower layer is controlled, and the reaction rhythm of hydrolysis, aging and transesterification in the core area is matched.
8. The catalytic transesterification reaction device of claim 7, wherein the speed regulating member further comprises: teeth on the rotating disk are meshed with the gear disk; The center of the upper layer plate is provided with a center hole for guiding the feed liquid to leak down to the core area from the blending area uniformly, so that the partial hydrolysis and excessive aging reaction caused by feed liquid accumulation are avoided.
9. The plasma electrolytic oxidation catalytic transesterification reaction device according to claim 1, wherein: the auxiliary member includes: the vortex cone flow pipe is arranged at the outer side of the flow guide pipe, and a flow guide strip and a notch are arranged in the vortex cone flow pipe and used for forming a rotary vortex in advance before the feed liquid is injected into the sealing cavity, so that the kinetic energy and the dispersity of the vortex cone flow pipe are enhanced, seasoning such as soy sauce and vinegar and drink feed liquid are fully contacted with the nano catalyst, and the initial hydrolysis and aging catalytic efficiency is improved; the cover is arranged above the reaction barrel and used for sealing the reaction barrel and can be connected with an inert gas system to regulate and control the reaction atmosphere, prevent active species in the catalytic system from being oxidized, maintain the directionality of hydrolysis, aging and transesterification catalysis of seasonings such as soy sauce, vinegar and beverage feed liquid, and reduce oxidation side reactions; the rotary pump is fixedly arranged on the outer side of the main mandrel and used for adsorbing and lifting the ceramic spheres deposited at the bottom of the sealing cavity, so that the cyclic utilization and activity maintenance of the catalyst in the reaction system are realized, and the reduction of the catalytic efficiency of hydrolysis, ageing and transesterification caused by catalyst deposition is avoided.
10. The plasma electrolytic oxidation catalytic transesterification reaction device according to claim 1, wherein: The plasma excitation part is externally connected with a high-frequency high-voltage pulse power supply and is used for exciting and generating low-temperature plasma among the micro electrode needle, the graphite electrode and the middle layer plate, so as to adapt to the low-temperature catalysis requirements of seasonings such as soy sauce, vinegar and beverage feed liquid; the high-frequency high-voltage pulse power supply is a nanosecond pulse square wave power supply, the output voltage range of the power supply is 5-15kV, the pulse frequency range is 1-10kHz, and the pulse width range is 50-500ns; the working current of the graphite electrode is matched with the output voltage of the high-frequency high-voltage pulse power supply, so that the electrode area and interval parameters are ensured to meet the electric energy injection requirement of the liquid phase catalysis system, and local current is prevented from being too high to damage flavoring ingredients such as soy sauce and vinegar and flavor ingredients of drinks.

Description

Plasma electrolytic oxidation catalytic transesterification reaction device Technical Field The invention relates to the technical field of plasma catalysis, in particular to a plasma electrolytic oxidation catalytic transesterification reaction device. Background In the organic liquid phase catalytic reaction, especially in the modification processes of liquid phase beverage and seasoning transesterification, amino acid hydrolysis, organic acid aging and the like, the traditional thermal catalysis or mechanical stirring method often has the problems of extensive energy injection mode and poor reaction selectivity, such as ultrasonic wave, microwave and other physical technologies, but the physical technologies can accelerate molecular movement, the lack of directional active species injection can easily cause local overheating and increased side reaction in a reaction system, the reaction path and conversion efficiency of target products are difficult to accurately control, and meanwhile, the requirements of flavor retention and component modification of seasonings such as soy sauce, vinegar and the like cannot be met, and in recent years, the low-temperature plasma technology provides a new way for directional catalysis of organic liquid phases such as seasonings, beverages and the like because high-activity particles can be generated at normal temperature and normal pressure, wherein the seasonings comprise but are not limited by soy sauce, vinegar, an electrode system, a high-voltage power supply and auxiliary units, the electric field distribution generated by the traditional static electrode structure is uneven, the discharge area is limited, the service life of the plasma active species is short, the penetration depth is limited, and certain limitation still exists; For example, in the practical application process, the electrolysis and the plasmas are separated in space, so that the cooperation of the electrolysis and the plasmas is difficult to form, the energy and the material distribution in the reaction system have obvious gradient, the contact efficiency of a gas-liquid-solid three-phase interface is low, the problems of uneven distribution of active species and low energy utilization rate caused by the limitation of a discharge area are caused, and the cooperative catalysis requirements of the seasoning such as soy sauce, vinegar and the like on transesterification, amino acid hydrolysis and organic acid aging cannot be met. Disclosure of Invention The invention provides a plasma electrolytic oxidation catalytic transesterification reaction device, which utilizes the organic coordination of vortex collision flow field generation, ultra-micro bubble dispersion, rotating electrode discharge and other functions to realize the reinforcement of a gas, liquid and solid three-phase reaction system and the accurate and uniform injection of plasma energy, improve the conversion rate, selectivity and product consistency of organic liquid transesterification, amino acid hydrolysis and organic acid aging reactions of seasonings, drinks and the like, and simultaneously ensure the stability of flavor components. In order to solve the technical problems, the technical scheme of the invention is as follows: In a first aspect, a reaction device for catalytic transesterification of plasma electrolytic oxidation comprises a base, a reaction barrel is fixedly arranged at the top of the base, a flow guide pipe is symmetrically arranged on the outer surface of the reaction barrel, a valve is fixedly arranged on the outer side of the middle part of the flow guide pipe, an induction sensor is arranged on the inner side of the valve, an upper layer plate and a middle layer plate are arranged on the inner side of the reaction barrel, a main mandrel is arranged above the reaction barrel in a penetrating manner, and a driving motor is fixedly arranged at the top end of the main mandrel, and the reaction device further comprises: The vortex part is arranged in the reaction barrel and is used for forming a vortex collision flow field at the bottom of the reaction barrel so as to pretreat the feed liquid and preliminarily mix the gas, strengthen the initial contact efficiency of a gas-liquid-solid three-phase catalytic interface, improve the initial catalytic activity of the nano catalyst and adapt to catalytic reactions such as transesterification, amino acid hydrolysis, organic acid aging and the like of a liquid phase system; The vortex part comprises a feeding piece and a hedging piece, the feeding piece is arranged at the bottom end of the flow guide pipe, the feeding piece is connected with the hedging piece, and the hedging piece is arranged at the bottom of the reaction barrel; the bubble placing part is arranged above the middle layer plate and below the upper layer plate, penetrates through the inner side of the middle layer plate and the upper layer plate, is used for adaptively adjusting stirring intensity and b