416 results about "Packed bed" patented technology

The invention provides a device and a method for extracting water from air operated under all working conditions. The device comprises a solar power supply unit, a salt-carrying hydrogel adsorption-desorption unit, an electric heating desorption unit, a water vapor condensation and collection unit and a PID control unit. The solar power supply system comprises a solar photovoltaic panel, an MPPT (maximum power point tracking) type photovoltaic inverter and a storage battery, the salt-carrying hydrogel adsorption-desorption unit comprises hydrophilic porous hydrogel and a LiCl / CaCl2 composite adsorption material, and the electric heating desorption unit comprises a copper heat-conducting plate loaded with the adsorption material and an electric heating sheet. The water vapor condensation and collection unit is composed of four finned radiators and two semiconductor chilling plates. The PID control unit is composed of a temperature and humidity sensor and a control circuit, wherein the temperature and humidity sensor is connected to the radiators and the front side of the adsorption bed. Water vapor in the environment is enriched through an efficient salt-loaded adsorbent packed bed, desorption is driven in two modes of solar photo-thermal and electric heating, desorbed high-humidity airflow passes through a fin type cooling fin connected with a semiconductor and then is condensed into liquid water, and the process of taking water from air is completed through a collector below. According to the device, low-energy-consumption air water taking under the humidity of 15%-100% can be achieved by controlling the operation time of all the units, the device is portable and compact, the automation degree is high, and high-water-yield air water taking is achieved by using solar photo-thermal and power generation as energy input.

The invention provides a low-cost metal modified electrode material, a preparation method and application, solves the problems that a carbon nitride material is difficult to recover and poor in sustainability, and improves the photoelectrocatalysis capability of an active carbon material. Further constructing a packed bed cathode coupled microbial fuel cell system; the treated industrial wastewater is high-salt coking wastewater from Anshan steel, a PEC-MFC system filled with electrogenesis microorganisms is used for realizing wastewater recycling and harmlessness, and energy-saving, high-efficiency and one-step treatment of the industrial wastewater is completed.

The invention discloses a continuous synthesis and purification method of hexafluoropropylene oxide, which comprises the following steps: introducing hexafluoropropylene, oxygen and a fluorine-containing solvent into a supergravity reactor to carry out oxidation reaction at the reaction temperature of 100-200 DEG C under the reaction pressure of 1.0-2.5 Mpa for 10-120 seconds, and after the reaction is finished, overflowing and leading out reaction liquid to obtain the hexafluoropropylene oxide. And purifying to obtain the hexafluoropropylene oxide. According to the method, the problems of mass transfer and heat transfer can be effectively solved by using the supergravity reactor, the reaction selectivity is remarkably improved, meanwhile, the productivity is effectively improved, and the supergravity reactor is combined with extractive distillation treatment, so that the conversion rate of the hexafluoropropylene reaches 79% or above, the selectivity of the hexafluoropropylene oxide is 85% or above, and the purity of the hexafluoropropylene oxide after extractive distillation reaches 99%. The invention further discloses a device used in the continuous synthesis and purification method, and cyclic utilization of hexafluoropropylene and the fluorine-containing solvent can be achieved.

The embodiment of the invention provides a thermal energy storage method and system based on a multi-section particle packed bed, the thermal energy storage system comprises an electric heating module, a fluidized bed thermal energy storage module and a fixed bed thermal energy storage module, the fluidized bed thermal energy storage module comprises a fluidized bed and first particles filled in a cavity of the fluidized bed, the electric heating module is partially arranged in the fluidized bed cavity and is in contact with the first particles, the fixed bed heat energy storage module is connected with the fluidized bed heat energy storage module, and the fixed bed heat energy storage module comprises a plurality of fixed beds connected in parallel and second particles filled in the fixed beds. According to the embodiment of the invention, rapid heat storage of the fluidized bed and the fixed beds is realized, the heat storage density is improved, heat storage is performed through a plurality of fixed beds, and the defect that the size of the fluidized bed is too large when the fluidized bed is adopted for heat storage can be avoided.

The invention provides a coal mine ventilation air methane synergistic enrichment and fluidized heat storage combustion system and method. The system comprises an air shaft diffusion tower and a ventilation air methane collecting device, the method comprises the following steps: collection and compression of ventilation air methane, cooling and boosting adsorption of an adsorption tower, pressure drop equalization of the adsorption tower, temperature rise, pressure reduction and desorption of the adsorption tower, pressure rise equalization of the adsorption tower, periodic cycle work of the adsorption tower, preheating of a packed bed of a heat storage furnace, fluidized heat storage oxidation of coal gangue and gas, and waste heat recovery and utilization. According to the invention, safe and efficient enrichment of ventilation air methane can be realized, and fluidized heat storage oxidation coupling utilization of concentrated gas and coal gangue particles can be realized; the oxidation waste heat is used as a generator heat source; the carbon reduction scheme of large-scale separation and concentration-synergistic oxidation-efficient utilization of the oversize coal mine ventilation air methane is formed, the coal industry is assisted to achieve the goal of'two wastes' and sustainable development, and large-flow, low-cost, safe and efficient treatment and utilization of the ventilation air methane discharged by an oversize low-gas mine can be achieved.

According to the monolithic catalyst packed bed process system and the corresponding method for fluidized carbonate reduction based on the monolithic catalyst, by adopting the monolithic catalyst, full contact of a gas phase, a solid phase and a solid phase is guaranteed, the efficiency of carbonate reduction reaction is improved, and the utilization rate of the catalyst is increased. Meanwhile, the problem of separation of a subsequently generated oxide solid product and a catalyst solid is avoided, and continuous operation of the system is realized. According to the present invention, the heating decomposition reaction of the metal carbonate and the hydrogenation reduction reaction of the in-situ carbon dioxide are coupled, and the monolithic catalyst is adopted to perform catalysis so as to obtain the high-value metal oxide and the synthesis gas or methanol product, and compared with the prior art, the process reaction temperature is substantially reduced so as to easily promote energy saving and emission reduction.

The invention discloses a supergravity continuous foam separation device and method, and belongs to the technical field of chemical separation. The device comprises n supergravity rotating packed beds and (n + 1) foam columns, when n is equal to 2, the device comprises first and second supergravity rotating packed beds and first, second and third foam columns; a gas inlet of the first supergravity rotating packed bed and a gas inlet of the first foam column are simultaneously connected with a gas conveying pipeline, and a foam outlet of the first foam column is connected with a liquid outlet of the first supergravity rotating packed bed; a gas inlet of the second foam column is connected with a gas outlet of the first rotating packed bed, and a foam outlet of the second foam column is connected with a gas inlet of the second supergravity rotating packed bed; a gas inlet of the third foam column is connected with a gas outlet of the second supergravity rotating packed bed; a liquid inlet of the first rotating packed bed is simultaneously connected with a liquid outlet of the second rotating packed bed and a liquid conveying pipeline. According to the invention, efficient separation of target substances is realized, and the method is suitable for a continuous operation process.

The invention relates to a flowing medium packed bed energy storage system which comprises a storage tank for storing flowing media, the storage tank is connected with a flowing medium loop through a stop valve, the flowing medium loop comprises a flowing medium pump, a heater, a heat accumulator module and a heat exchanger which are sequentially connected through a pipeline, and the flowing medium pump provides power for flowing medium circulation; the heat accumulator module is composed of a plurality of heat accumulator units, and each heat accumulator unit is filled with a solid material. In the heat storage mode, the heater heats the flowing medium from the low-temperature state to the high-temperature state, and then the solid materials filled in the heat storage body units are heated through the heat storage body units. In the heat release mode, the flowing medium is heated from a low-temperature state to a high-temperature state after flowing through the high-temperature solid material, and then heat is released to an external system through the heat exchanger. Efficient heat exchange between a flowing medium and a solid material is achieved through the modular solid filling design, so that the heat storage efficiency of the whole system is improved, and the adaptability and flexibility of the system are enhanced.

The disclosure provides an extracorporeal devices, systems and methods for removing a pathogen or a toxin from a biological fluid of a subject comprising contacting a biological fluid from the subject with a loosely packed bed of adsorption media, such as a fluidized bed, wherein the adsorption media comprises heparin, to remove the pathogen or the toxin to form a treated biological fluid; and infusing the treated fluid into the subject.

The invention belongs to the technical field of automatic control, and particularly relates to a fault diagnosis and automatic control system of a packed bed continuous hydrogenation process device. The system comprises a model building part used for carrying out material balance modeling on a reactor to obtain a material balance model; establishing a reaction kinetics and heat balance coupling model; establishing a pressure field distribution model; establishing a catalyst inactivation model to obtain activity distribution of the catalyst; the state observation part is used for performing tensor decomposition on the fault deviation vector according to the activity degree part and the pressure distribution of the catalyst in combination with the concentration distribution and the temperature distribution of each component to obtain a fault feature tensor; and the diagnosis and automatic control part is used for calculating an abnormal state probability according to the fault feature tensor, generating a compensation controller according to the abnormal state probability, and performing automatic control by using the compensation controller. According to the invention, comprehensive monitoring and accurate control of the packed bed reactor are realized.

Methods and devices for analyzing non-volatile organics in exhaled breath and other aerosols using various diagnostic tools that enable rapid, low-cost point of care assays for several diseases including respiratory tract diseases such as COVID-19. The disclosed methods and systems selectively capture non-volatile organics in exhaled breath and other aerosols in a packed bed column. The non-volatile organics are eluted and samples are analysis using diagnostic devices including MALDI-TOFMS. The disclosed systems and methods provide for a diagnostic test result in less than about 20 minutes and provides for autonomous operation with minimal human intervention.

Disclosed herein is a rotating packed bed, RPB, arrangement configured to provide mass transfer between a liquid sorbent and a gas, the RPB arrangement comprising: an RPB configured to provide a substantial cross-flow between a liquid sorbent and a gas; and a spray arranged to spray the liquid sorbent onto the RPB; wherein the RPB and spray are both arranged at different longitudinal positions on a gas flow path through the RPB arrangement.

Systems and methods are provided for performing amine capture on a heated flue gas using multiple rotating packed beds. By integrating a series of rotating packed beds to perform cooling of the flue gas, removal of CO2 from the flue gas by contact with an aqueous amine, and washing of the gaseous effluent from CO2 removal step to remove any entrained amine, the equipment footprint and overall equipment volume required for CO2 capture can be significantly reduced. The integration of cooling, CO2 removal, and washing can be integrated into a series of packed beds in part by using different packing materials in the various packed beds.

The invention discloses an oxygenation device based on wind and light driving, and belongs to the technical field of sewage treatment. The device comprises a packed bed for filtering sewage; the supporting column is buried on the packed bed, the interior of the supporting column is hollow, and an inner pipe and an outer pipe are arranged in the supporting column in a penetrating manner; the containing shell comprises an upper shell and a lower shell, the upper shell and the lower shell are arranged above the supporting column after being spliced, and a solar power generation panel is arranged on the outer wall face of the upper shell; the wind power assembly is arranged above the accommodating shell; the storage battery is arranged in the accommodating shell and is used for storing the electric energy generated by the solar power generation panel; wherein the wind power assembly comprises a rotating fan blade, and the rotating fan blade is connected with the inner pipe. According to the invention, an external driving power supply is not needed, and autonomous power supply can be realized through the wind power assembly and the solar power generation panel, so that the whole device can operate all day long and rotate in cooperation with wind power, the power consumption of the driver can be greatly reduced, and energy is saved.

A process for operating an oxidizable combustion gas cleaning unit in a metallurgical plant, including the steps of: (a) passing an oxidizable combustion gas from a metallurgical reactor, in particular a blast furnace gas from a blast furnace, in a packed bed scrubber arrangement through a packed bed in countercurrent with a washing water or in a spray scrubber arrangement to remove cyanide compounds, in particular hydrogen cyanide, and to increase the removal of chloride compounds, in particular hydrogen chloride, from the combustion gas by solubilizing the cyanide and chloride compounds in the washing water, (b) collecting the washing water containing solubilized cyanide and chloride compounds at a bottom end of the packed bed or spray scrubber arrangement, and (c) collecting a cleaned oxidizable combustion gas at a top of the packed bed or spray scrubber arrangement, wherein a base is added to the washing water before step (a).

The invention discloses an immersed rotating packed bed combined coil device and method for reactive extraction, and the combined coil device comprises a shell, a liquid inlet, a sealing assembly, a liquid premixing pipe, a packing assembly, a heat exchange jacket, a liquid emptying port, a liquid outlet and a spiral coil assembly; according to the device, a reactor cavity is completely filled with liquid, so that an immersed reaction environment is formed; and a strong shearing effect is generated by utilizing the supergravity silk screen filler, so that rapid heterogeneous mixing is realized, and the reaction selectivity is improved. Meanwhile, a supergravity reaction area and a coil flow area are combined into a whole, the spiral coil can repeatedly change the flow direction and form vortex to realize continuous flow of the material and maintain the dispersion state of liquid drops, and the retention time of the material is flexibly regulated and controlled by adjusting the length of the coil, so that the reaction conversion rate is remarkably improved.

The present disclosure provides a multipurpose multi-source heat-storing compressed air energy storage system and a method thereof, including a packed bed heat-storing device, a heat-storing circuit, a heat-releasing circuit, a gas-storing circuit, a photothermal circuit, a heating-supplying circuit and a cooling-supplying circuit, wherein the heat-storing circuit and the heat-releasing circuit are connected to the packed bed heat-storing device, respectively, and the heat-storing heat exchanger of the heat-storing circuit and the heat-releasing heat exchanger of the heat-releasing circuit are connected with the gas-storing circuit, respectively, the photothermal circuit is connected with the heat-storing circuit, the heating-supplying circuit is connected with the heat-releasing circuit and the photothermal circuit, the cooling-supplying circuit is connected to the packed bed heat-storing device and the photothermal circuit, the photothermal circuit heats the heat-storing circuit and the heat-releasing circuit.

The present invention provides a composite gasification device based on a filtration combustion mode, belonging to the technical field of solid fuel gasification for producing synthesis gas. It solves the problems of low carbon conversion efficiency, high tar content, and low synthesis gas yield. It includes a gasifying agent inlet, a preheating section, a reaction section, a reforming section, a synthesis gas outlet, and a discharging section. The gasifying agent inlet is communicated with the preheating section. Both ends of the reaction section are respectively communicated with the preheating section and the reforming section. The synthesis gas outlet is communicated with the reforming section. The discharging section is communicated with the reaction section. Both the preheating section and the reforming section are composed of various forms of inert porous medium fillers. The internal of the porous medium packed bed has complex pore channels, which is beneficial to mass transfer and heat transfer. The porous medium can be composed of inert particles such as ceramsite or glass microspheres and similar substances, wire meshes, and foam ceramics, etc. It is mainly used for the efficient gasification of various solid fuels.

The invention relates to the technical field of liquid air energy storage, in particular to a liquid air energy storage device and method based on backflow cold storage circulation. The air liquefaction circulation loop comprises an air compressor unit, an air purification unit, a cold box, a liquid air storage tank, a cold storage unit and a heat storage unit. In the electricity utilization trough period, after being purified, compressed and cooled, ambient air is expanded and depressurized to obtain liquid air, meanwhile, air compression heat energy is recycled and stored, and cold energy of the cold storage unit is reused through circulation air flowing out of the air purification unit to strengthen the liquefaction performance; in the peak period of power utilization, liquid air enters the power generation expansion unit for power generation after being pressurized, evaporated and heated, and evaporation cold energy is recycled and stored through outlet gas of the power generation expansion unit. The cold energy recovery and storage efficiency of the solid cold storage packed bed is improved through the structural form of backflow cold storage circulation, and air compression heat energy is effectively distributed and utilized.

The utility model relates to the field of rural domestic sewage, and discloses a buried integrated rural domestic sewage treatment device for improving the rural domestic sewage treatment effect. Comprising a first cell, a second cell, a third cell and a fourth cell which are communicated in sequence; a first water inlet is formed in the side wall of the first grid chamber, and the effective volume of the first grid chamber is below the first water inlet; a stirring device is arranged in the second grid chamber; a packed bed is arranged in the third cell; the packed bed is communicated with a water inlet of the third cell; a vertical filter screen is arranged in the middle of a bottom plate of the fourth grid chamber, and the height of the vertical filter screen is lower than the height of the effective volume of the fourth grid chamber; and a water outlet is formed in the fourth grid chamber. The device disclosed by the utility model can obviously improve the effluent quality and reduce the burden of subsequent treatment.

The invention discloses a compressed carbon dioxide energy storage system based on phase change heat storage and regenerative coupling and a deep peak regulation method, relates to the technical field of energy storage, and constructs a three-stage cascade heating chain. The compressed carbon dioxide energy storage system comprises a compressor unit, a high-pressure tank, a low-pressure tank, a regeneration heater, a PCM packed bed and a turbine generator unit. An outlet of the low-pressure tank is connected with an inlet of a working medium channel in the regeneration heater through the compressor unit and the high-pressure tank, an outlet of the working medium channel in the regeneration heater is connected with an inlet of a working medium channel in the PCM packed bed, and an outlet of the working medium channel in the PCM packed bed is connected with an inlet of a heat source channel in the regeneration heater through the turbine generator set. An outlet of a heat source channel in the regeneration heater is connected with an inlet of the low-pressure tank through the first air cooler. According to the method, the output power, the energy storage density and the peak regulation response speed of the system are remarkably improved, and an efficient deep peak regulation solution is provided for renewable energy source grid connection.

The invention belongs to the technical field of sewage treatment, and discloses a multi-layer green ecological sewage treatment system which comprises an aeration vertical flow constructed wetland and at least one layer of horizontal subsurface flow constructed wetland which are vertically and stereoscopically arranged underground, the aeration vertical flow constructed wetland comprises a first fine gravel layer and at least two first wetland frame layers which are arranged from top to bottom, each first wetland frame layer is provided with a plurality of first wetland frames, first wetland filler is arranged in each first wetland frame, an aeration pipe is arranged at the bottom or below the first wetland frame layer at the bottommost layer, and a plurality of aerators are connected to the aeration pipe; the horizontal subsurface flow constructed wetland comprises a first water storage tank, a packed bed and a second water storage tank which are communicated in sequence; the packed bed comprises a second fine gravel layer and at least two second wetland frame layers which are arranged from top to bottom. According to the invention, the sewage can be effectively treated, the CODCr, ammonia nitrogen, TN, TP and SS of the treated water comprehensively reach the standard, and the water quality can reach the first-grade A standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant.

The application discloses a method for continuously preparing MOF materials in water phase by using a supergravity technology, and comprises the following steps: S1, weighing metal salt and dissolving the metal salt in a deionized water solution at normal temperature, and recording the solution as reaction liquid A; S2, weighing organic ligand and dissolving the organic ligand in an alkali solution at normal temperature, and recording the solution as reaction liquid B; S3, starting a supergravity reactor, and simultaneously introducing the reaction liquid A and the reaction liquid B into the supergravity reactor by a peristaltic pump to perform a precipitation crystallization reaction, so as to prepare a MOF material suspension, wherein the supergravity reactor is selected from an external circulation rotating packed bed; and S4, performing centrifugation, washing, activation and drying on the suspension, so as to obtain MOFs. The method is green and environment-friendly, the prepared product has high crystallinity, large specific surface area, uniform particle distribution, regular morphology, and the average particle size is 20 nm-6 microns, and the size is controllable.

The invention relates to the technical field of heating ventilation air conditioners, in particular to a thermochemical energy storage air conditioning system and a using method. In the heat charging process, ambient air is pressurized by a frequency conversion fan, is heated to a proper temperature by a preheating heat exchanger and a heater, flows into a thermochemical energy storage packed bed, stores heat energy carried by the ambient air as thermochemical energy, and is discharged to the environment after waste heat utilization by the preheating heat exchanger; in the heat release process, saturated air which is pressurized and humidified through the frequency conversion fan and the humidifier is mixed with the other stream of dry air which is heated and dehumidified after the reaction of the thermochemical energy storage packed bed, and the two streams flow into an air-conditioned room to supply heat after being mixed. The thermochemical energy storage technology is matched with an air conditioning system for use, waste heat or solar energy is stored for heating air, energy conservation and emission reduction are achieved, meanwhile, the effects of heavy-weight heat storage, ultra-low-loss cross-season long-term energy storage and flexible and stable heat utilization are achieved, and a new path is provided for heat supply regulation and control of the human settlement environment.

The invention provides a preparation method of a Fischer-Tropsch synthesis iron-based catalyst, Fe-Cu-K-M-Q-SiO2 is used as a basic formula, M element is selected from at least one of vanadium, tin, manganese, aluminum, cobalt, nickel, ruthenium, zinc and chromium, Q element is selected from at least one of cerium, zirconium, lanthanum, magnesium, calcium, barium, neodymium, strontium and boron, and the balance is Fe. According to the Fischer-Tropsch synthesis precipitation iron-based catalyst and the preparation method thereof, a coprecipitation reaction of a catalyst precursor is carried out by combining a supergravity rotating packed bed reactor, and then filtering, washing, drying and roasting are carried out, so that the finally prepared Fischer-Tropsch synthesis precipitation iron-based catalyst has high reaction activity, selectivity and stability and also has high wear resistance.

The utility model relates to the technical field of wastewater treatment, in particular to a sulfur autotrophic denitrification filter tank device driven by a suspended packed bed. The sulfur autotrophic denitrification filter tank device comprises a regulating tank, a sulfur autotrophic denitrification biological filter tank and a sedimentation tank which are communicated in sequence; the adjusting tank is used for homogenizing the wastewater; a suspended sulfur autotrophic denitrification biological filler is arranged in the sulfur autotrophic denitrification biological filter, and the sulfur autotrophic denitrification biological filter is used for performing a sulfur autotrophic denitrification reaction to remove nitrate nitrogen in the wastewater; the sulfur autotrophic denitrification biofilter is also connected with a sulfur autotrophic denitrification dosing tank; the settling pond is used for standing and settling the wastewater; a water outlet for discharging treated wastewater is formed in the top of the sedimentation tank. According to the utility model, the suspended biological filler is combined with the sulfur autotrophic denitrification reagent, and the suspended sulfur autotrophic denitrification biological filler is arranged in the sulfur autotrophic denitrification biological filter, so that the mass transfer efficiency can be improved, and the deep removal of nitrate nitrogen in wastewater is realized.

The invention relates to the technical field of liquid air energy storage and cold energy storage, in particular to a liquid air energy storage power generation device and method based on packed bed cascade cold accumulation, and the liquid air energy storage power generation device comprises a liquid air supply unit, a cold energy cascade storage and exchange unit and an air expansion power generation unit. Liquid air is pressurized by a low-temperature pump and then enters the cold energy cascade storage and exchange unit, graded vaporization is carried out to release cold energy, the vaporized air enters the air expansion power generation unit to carry out expansion power generation, the air with residual pressure after power generation is completed serves as heat exchange fluid to enter the cold energy cascade storage and exchange unit, and low-temperature cold energy is recovered in a graded mode and stored in a cascade mode. Through graded heat exchange and cascade cold storage, the heat exchange temperature difference is reduced, the temperature gradient of the packed bed is reduced, then the cold loss in the heat exchange and cold storage process is reduced, and the system efficiency is improved. In addition, the residual pressure generated after air power generation is used as driving, an additional circulating fan is not needed, and the investment cost can be reduced.

The invention relates to a single-tank thermocline energy storage device which comprises a solid packed bed, the solid packed bed comprises at least three axially-distributed flow collecting and distributing devices and metal phase change materials located among the flow collecting and distributing devices, the metal phase change materials are graphite wrapped metal, and the metal is aluminum or aluminum alloy; in the heat storage process, fused salt flows in from the top, heat is transferred to the metal phase change material downwards layer by layer, and then the fused salt is led out from the flow collecting and distributing device; in the heat release process, the fused salt flows in from the bottom, heat is transferred to the fused salt from the upward metal phase change material layer by layer, and then the fused salt is led out from the flow collecting and distributing device. According to the single-tank thermocline energy storage device, through the arrangement of the at least three flow collecting and distributing devices, the fused salt is led out downwards layer by layer in the heat storage process and led out upwards layer by layer in the heat release process, the time for stabilizing the temperature of the fused salt at an outlet can be effectively prolonged, the thickness of a thermocline is controlled, and the efficiency and reliability of the single-tank thermocline energy storage device are improved.

Methods and devices for capturing and analyzing aerosolized particles in exhaled breath characteristic of a respiratory disease to enable rapid, low-cost point of care assays for several diseases including respiratory tract diseases such as COVID-19 are disclosed. The disclosed methods and systems selectively capture aerosolized particles using a packed bed column. The captured particles are then eluted using solvents and analyzed using analytical devices including MALDI-TOFMS.

The present application relates to a kind of dimethylamine piperidine continuous synthesis dimethylamine piperidine method of oxy group, by using reaction raw material mixed solution into continuous flow packed bed reaction zone, i.e.catalyst layer;Reaction temperature is 20-80 ℃, normal pressure, feed liquid is the mixture of dimethylamine piperidine, hydrogen peroxide and deionized water, oxidation is carried out on the catalyst layer of continuous flow packed bed adiabatic reactor to make dimethylamine piperidine into dimethylamine piperidine oxy group, realize the continuous preparation of dimethylamine piperidine oxy group;The obtained reaction liquid is quenched, then filtered to remove solid particle quenching agent, vacuum distillation to remove water and vacuum rectification treatment obtain high-purity dimethylamine piperidine oxy group;The process scheme overcomes the series of deficiencies in the previous preparation process, such as complicated steps, low product purity, low production capacity in unit production time, realizes the continuous preparation of high-purity dimethylamine piperidine oxy group, with the characteristics of efficient, safe, green manufacturing.