866 results about "Reaction system" patented technology

The invention discloses a multistage circulating fluidized bed hydrogen peroxide integrated production method, and relates to the field of hydrogen peroxide preparation.The method comprises the steps that continuous efficient synthesis of hydrogen peroxide is achieved by constructing a multistage serial circulating fluidized bed reaction system; meanwhile, a genetic algorithm based on historical data is introduced to perform off-line optimization on process parameters such as reaction temperature, flow velocity, catalyst particle size, gas-liquid ratio and retention time, so that the hydrogen peroxide yield is improved, the energy consumption per unit yield is reduced, and the generation of byproducts is inhibited; the constructed optimization objective function adopts a weighted mean square error structure, multiple objectives are balanced, and it is ensured that the overall working condition is optimal; an optimization result is used for guiding initial setting and steady-state operation of a reaction system, and efficient reaction can be realized without real-time sensor control. The system has the advantages of high process structure integration level, high control strategy intelligence degree, good operation stability and the like, and is suitable for continuous optimization operation of medium and large hydrogen peroxide production devices.

The invention relates to the technical field of adsorbents, and discloses a moisture-resistant carbon dioxide trapping adsorbent, and a preparation method thereof comprises the following steps: S1, blending oxalic acid or oxalate or squaric acid and a zinc source in a reaction system to obtain a mixture I; s2, dissolving an organic ligand in a solvent to obtain a mixture II; s3, the mixture I and the mixture II are subjected to a reaction and post-treatment, and the adsorbent is obtained. According to the prepared adsorbent, a pore structure is formed in situ in the preparation process, the specific surface area is large, the porosity is large, the structure can be kept stable in the presence of water and steam, and the adsorbent is stable to wet acid gas.

The invention provides a method for preparing high-purity phosphatidylserine by a batch enzyme catalysis method based on dynamic choline removal, and belongs to the technical field of enzymatic reaction. According to the method disclosed by the invention, in a reaction system for preparing phosphatidylserine, a byproduct choline is selectively adsorbed by adopting resin. Choline in a reaction system is removed in real time through the integrated adsorption separation module, the enzyme inhibition problem is solved, and meanwhile, the PC conversion rate is larger than or equal to 98% and the PS purity is larger than or equal to 96% in combination with the immobilized enzyme circulation technology; the enzyme can be reused for more than or equal to 20 times (activity retention is more than or equal to 90%); and the choline residual concentration is less than or equal to 0.5 mM (an inhibition threshold value or less).

The invention relates to a fluidized bed reaction system for a silicon-carbon negative electrode material. The silicon-carbon negative electrode material fluidized bed reaction system comprises a drying tank, a fluidized bed reactor and a discharge tank, the drying tank is provided with a material cavity, and the drying tank can dry materials in the material cavity and can also convey replacement gas into the material cavity to replace gas in the material cavity; the fluidized bed reactor is internally provided with a gas-solid separation area, a reaction area and an initial fluidization area which are sequentially arranged from top to bottom, and the reaction area is communicated with the material cavity so as to receive the dried materials; the discharge tank is provided with a dust removal cavity, the dust removal cavity is communicated with the gas-solid separation area through a discharge pipeline, the discharge pipeline is provided with a blasting assembly, and when the pressure in the fluidized bed reactor exceeds a first preset value, the blasting assembly can be broken to release gas in the fluidized bed reactor; meanwhile, powder in the fluidized bed reactor can be discharged into the washing liquid in the dust removal cavity through the discharge pipeline.

The invention discloses a methylal production raw material mixer and a working method thereof. The methylal production raw material mixer comprises a kettle body, the outer wall of the kettle body is fixedly sleeved with a bottom sleeve, a plurality of supporting legs are arranged on the outer side wall face of the bottom sleeve, and a discharging valve is arranged at the lower end of the kettle body; the invention relates to the technical field of methylal production technologies, and has the beneficial effects that liquid formaldehyde is intermittently dropwise added through linkage control of a rotating plug and a lifting plug when the liquid formaldehyde is added, and the liquid formaldehyde is dropwise added dispersedly through a plurality of droppers, so that local reaction overheating caused by concentrated addition is avoided, side reactions are reduced, and the production efficiency is improved. The dropper penetrates through the heating cavity of the kettle cover with the special-shaped cavity, and the liquid formaldehyde is preheated before being dropwise added, so that the temperature of a mixed solution is prevented from being suddenly reduced by a low-temperature raw material, and the catalytic activity is ensured; the cylindrical cavity surface of the special-shaped cavity kettle cover extends into the kettle body, and heat is directly supplemented to the central area of a reaction system on the basis of outer layer heating, so that the temperature gradient is eliminated.

The invention relates to a liquid multi-material reaction system, which comprises a first material stirring kettle, a second material stirring kettle, a reaction kettle, an emulsifying device and a finished product kettle, the first material stirring kettle and the second material stirring kettle are respectively connected with the reaction kettle, the reaction kettle and the emulsifying device are respectively connected with the finished product kettle, and the finished product kettle is connected with the emulsifying device. The first material stirring kettle is filled with a first material and is used for stirring the first material during working, and the second material stirring kettle is filled with a second material and is used for stirring the second material during working; when the reaction kettle works, a first material injected from the first material stirring kettle and a second material injected from the second material stirring kettle are stirred and reacted to form a first intermediate product. By arranging the first material stirring kettle, the second material stirring kettle, the reaction kettle, the emulsifying device and the finished product kettle, a safe and efficient production system is provided for brine reaction; and the air pressure sensor and the suction mechanism are arranged, so that furnace explosion is avoided.

The invention discloses a high-flux automatic chemical synthesis workstation, which relates to the technical field of chemical synthesis, and comprises a base, the base is detachably provided with a negative pressure suction filter, a magnetic stirring reactor, a high-flux chemical reaction module, a gun head box, a cover plate and a liquid storage tank, and the negative pressure suction filter and the magnetic stirring reactor can be replaced by other detection instruments. The cover plate is in lap joint with a screw, the base is further provided with a moving device, the moving device is provided with a button assembly, a clamping jaw assembly and a pipetting assembly, the pipetting assembly is used for pipetting, and the clamping jaw assembly drives the cover plate to the high-flux chemical reaction module for sealing. The sealing module is driven to the reactor through the clamping jaw assembly after being fastened through the fastening assembly, and real-time observation can be carried out during remote operation. By means of the technical scheme, it is guaranteed that high-throughput chemical synthesis experiments including pipetting, reaction system sealing, reaction starting, gradient dilution and suction filtration are completed in one work station.

This invention discloses a method for preparing a multi-shell porous core-shell structured nickel-based cathode material precursor. This method directly controls the preparation of the precursor through partial reaction control. A seed reactor and a reaction vessel are connected to a concentration tank to control the precursor particle size. During the precursor preparation stage, the pH of the reaction system is controlled by continuously reducing the flow rate of the complexing agent solution, thereby achieving continuous coating of the seed core surface with multiple loose shells. The cathode material prepared based on the multi-shell porous core-shell structured nickel-based cathode material precursor can store more electrolyte, thus improving the cycle performance during charge and discharge. Furthermore, the loose porous structure of the cathode material prepared based on the multi-shell porous core-shell structured nickel-based cathode material precursor can provide more storage space under overcharge conditions of lithium-ion batteries, thereby improving their safety performance.

The invention relates to the technical field of building material preparation, in particular to a preparation device for composite modified asphalt. Comprising a modified material premixing bin, an asphalt feeder and a main reaction system, a modified material feeding port and an asphalt feeding port are formed in the top of the main reaction system, the modified material premixing bin is communicated with the main reaction system through the modified material feeding port, and the asphalt feeder is communicated with the main reaction system through the asphalt feeding port; the main reaction system is of a multi-stage mixing reaction kettle structure and sequentially comprises a first-stage vertical stirring area, a second-stage high-speed shearing area and a third-stage static mixing area, and the interiors of the first-stage vertical stirring area, the second-stage high-speed shearing area and the third-stage static mixing area are communicated with one another; and through continuous design of multi-bin matching and multi-stage mixing, the problems of non-uniform mixing and low product performance of the composite modified asphalt are solved.

The invention discloses a construction method and application of an SERS (Surface Enhanced Raman Scattering) sensor for detecting Mn < 7 + >. Belongs to the field of detection application, and the construction method of the SERS sensor for detecting Mn < 7 + > comprises the following steps: uniformly mixing an ABTS solution, a to-be-detected solution containing Mn < 7 + > and a silver nanoparticle solution, adding an acid solution to adjust the pH value of a reaction system, and reacting for 1-3 minutes. The SERS sensor for detecting Mn < 7 + > is applied to detection of heavy metal Mn < 7 + >. According to the method disclosed by the invention, by virtue of specific selection of the ABTS on Mn < 7 + > and addition of silver which has extremely high characteristics on SERS detection, convenient and rapid trace detection on Mn < 7 + > is realized. The selective reaction material explored by the invention is used for trace detection of heavy metal Mn < 7 + > by utilizing an SERS technology, and has important significance in application to actual life.

The invention relates to the technical field of adhesive preparation, and discloses a shaving board biomass adhesive preparation adding device and an adding method thereof.The shaving board biomass adhesive preparation adding device comprises a spherical mixing bin, a heating rod is arranged in the shell wall of the spherical mixing bin, a feeding port is fixedly connected to the top of the spherical mixing bin, and a hopper is fixedly connected to the top of the feeding port; a discharging pipe is fixedly connected to the bottom of the spherical mixing bin, an intermittent feeding mechanism is arranged in a feeding port, and the method comprises the following steps that firstly, raw materials are prepared; 2, the adding amount of the raw materials added at a time of an intermittent feeding mechanism is set; and step 3, mixing the raw materials, intermittently adding the raw materials, and realizing process optimization by accurately setting the adding amount each time, so that the inherent advantage of intermittent adding can be amplified, the stability, efficiency and controllability of viscose preparation can be further improved through quantitative control, and the dynamic balance in a reaction system is ensured.

The invention provides a movable zero-carbon emergency energy device and management method for hydrogen-oriented wind-light-storage cooperation, and the device comprises a reaction system which is used for preparing a hydrogen flow in real time; the auxiliary gas system is used for outputting auxiliary gas flow; the fuel cell system is used for generating electricity through the reaction of the hydrogen flow and the auxiliary gas flow; the power storage system is used for storing electric energy generated by power generation of the fuel cell system; the discharging system is used for outputting the electric energy stored in the electricity storage system at a corresponding output voltage according to a preset requirement; the control system is used for coordinating and controlling the reaction system, the auxiliary gas system, the fuel cell system, the power storage system and the discharge system; and the explosion-proof box is used for loading the system. According to the movable zero-carbon emergency energy device for hydrogen-oriented wind-light-storage cooperation, power can be supplied to the outside by preparing hydrogen in real time and adopting a fuel cell power generation mode, the position of the device can be flexibly adjusted according to the power supply requirement, and the high-reliability, green and low-carbon emergency energy supply requirement is met.

The invention discloses a method for leaching waste lithium battery positive electrode powder by using intestinal flora in a neutral environment, and belongs to the technical field of resource recycling, the method comprises the following steps: step 1, a pretreatment link, the pretreatment link comprises the following process links, and each link has no sequence: (1) preparation of battery powder, (2) acquisition of intestinal flora, and (3) preparation of a culture medium; 2, domesticating the flora; and 3, valuable metal in the waste battery powder is leached out. According to the method, the intestinal flora is applied to the biological leaching of the waste LIBs positive electrode powder, so that the dependence of traditional strong acidophilic bacteria on an extremely low pH condition is broken through, and the environmental harm is greatly reduced; according to the method, inorganic acid does not need to be added, the pH value of a reaction system is stabilized within the nearly neutral range of 7.8-8.2, equipment loss caused by acid etching is reduced, reagent consumption for subsequent metal recovery and neutralization treatment is reduced, and remarkable economic benefits and environmental benefits are achieved.

The invention provides a reforming reaction system based on a Joule heat effect and application of the reforming reaction system. The reforming reaction system comprises a raw material gas inlet unit, a reaction tube, a Joule heating unit and a power supply device, wherein the reaction tube comprises a gas inlet, a gas outlet and a reaction cavity, and the gas inlet is connected with the raw material gas inlet unit; the Joule heating unit comprises a heating element, the heating element is arranged in the reaction cavity, the heating element comprises a preheating zone and a reaction zone, and the preheating zone is adjacent to the gas inlet; the power supply device provides current to enable the heating element to generate heat. The monolithic catalyst is directly heated in the reaction tube based on the Joule effect, high-temperature accurate control is achieved, generated heat is rapidly and evenly transferred to active sites of the catalyst, the catalyst is applied to a method for preparing synthesis gas through methane and carbon dioxide reforming reaction, catalytic performance is improved, and long-period stable operation of catalytic reaction is achieved.

The invention discloses a method for preparing a sodium electric precursor by a redox control potential method. According to the invention, the oxidation-reduction electrode is arranged on the reaction kettle to monitor the oxidation-reduction potential of the reaction system in real time, and different potential control is realized by controlling the purity of nitrogen and other mixed gases in the reaction kettle or the dosage of an oxidation-reduction agent added into the reaction kettle; the primary and secondary particle morphology, the specific surface area and the product compaction of the product can be effectively controlled, and precursors with different physical and chemical indexes can be prepared according to different potentials. According to different characteristics of the precursor, the sintered positive electrode material has different electrochemical properties, such as higher electrochemical rate capability, gram volume and cycle performance, so as to meet application requirements of different products.

The invention belongs to the technical field of chip diagnosis, and discloses a sample introduction and reaction system for chip sequencing, the sample introduction and reaction system comprises a supply device, a flow channel switching device, a dismounting device, an extraction device and a reaction tank; the supply device is provided with a sealed detachable opening structure, and the opening detaching device can move relative to the supply device until the detachable opening structure is opened; the supply device is arranged around the flow channel switching device, the extraction device is connected with the bottom end of the supply device and the reaction tank through the flow channel switching device, and the flow channel switching device can enable the supply device to be communicated with the extraction device or enable the extraction device to be communicated with the reaction tank by switching the state of the flow channel switching device. According to the sample introduction and reaction system for chip sequencing, the reagent conveying time can be shortened, the phenomenon of dead volume of a reagent in the conveying process is reduced, the problem of reagent waste caused by bubbles generated by a pipeline in the conveying process is effectively avoided, and the reagent sample introduction efficiency is improved.

The invention discloses a process method for preparing high-spinning nano pyrite through physical field-chemical method coupling regulation and control, which comprises the following steps: dissolving bovine serum albumin in deionized water, adding an iron source, uniformly mixing, adjusting the pH value of the solution to 10.0-11.0, adding a sulfur source, and uniformly mixing, thereby obtaining the high-spinning nano pyrite. Carrying out a coupling regulation reaction of a physical field and a chemical method on the reaction system under the protection of inert gas, and then dialyzing and purifying to prepare the high-spin-state FeS2 nanosheet. The chemical method comprises one or more of a coprecipitation method, a solvothermal method and a hydrothermal method; the physical field comprises one or more of an alternating magnetic field, a static magnetic field and a rotating magnetic field. Through coupling regulation and control of a physical field and a chemical method, accurate conversion of the FeS2 nanosheet from a low spinning state to a high spinning state is realized, chemical doping can be effectively avoided, natural biological suitability of FeS2 is reserved, and the method has a good clinical conversion application prospect.

The invention provides a magnet driving power supply, a magnet driving method and system, and a fusion reaction system. The magnet driving power supply comprises a capacitor unit and a plurality of groups of control modules, each group of control modules comprises two control modules, the control modules are connected in parallel, and each control module comprises two power units; in each control module, the first end of one power unit is connected with the positive electrode of the capacitor unit, the second end of the power unit and the first end of the other power unit are both connected with the auxiliary node, and the second end of the other power unit is connected with the negative electrode of the capacitor unit; the auxiliary nodes in the two control modules in each group of control modules are respectively connected with two ends of a magnet in the fusion reaction device; the power units in the control modules are controlled to be switched on or switched off based on current parameters, so that the multiple groups of control modules are started in a time-sharing manner, and the capacitor units are driven to transmit current to the magnets; the magnet driving power supply has a good effect of transmitting current to the magnet.

The invention discloses an oxygen carrier abrasion evaluation device and method. The device comprises a computer, a PLC, a weighing sensor, a differential pressure sensor, a buffer gas chamber, an infrared heating furnace, a compressed gas cylinder, a water storage bottle, a sampling pipe, a tail gas collecting pipe, a filter, a micro gas pump and a reactor. Wherein the computer, the weighing sensor, the differential pressure sensor and the infrared heating furnace are all connected with the PLC, a reactor is arranged in the infrared heating furnace, the weighing sensor is provided with the scale, the scale is provided with the buffer gas chamber, the buffer gas chamber is communicated with the reactor, and the compressed gas cylinder and the water storage cylinder are both connected with the buffer gas chamber; the micro air pump is connected with the filter which is connected with the tail gas collecting pipe. Under the conditions of a mechanical wear experiment and a thermal stress wear experiment, the wear performance of the oxygen carrier is evaluated by drawing a thermogravimetric curve and calculating the wear rate by using a thermogravimetric signal transmitted by the device, which indicates that the oxygen carrier has good chemical looping reaction wear resistance, and the method provides a scientific basis for optimizing the design and operation of a chemical looping reaction system.

The invention provides a process and a method for phase equilibrium regulation and control in petroleum industry, main components of petroleum raw materials are determined through raw material analysis, and pertinence and effectiveness of regulation and control are ensured. According to the invention, the mixed materials are put into the reaction kettle for phase equilibrium regulation reaction, and the reaction temperature, pressure and time are strictly controlled, so that the reaction process is stable and controllable, and the product quality is improved. The specific steps for raw material analysis by using the gas chromatograph-mass spectrometer are detailed and accurate, and the specific steps for determining the regulation and control target define the specific numerical values of the light oil yield and the oil product quality index, so that the regulation and control are more operable. Temperature, pressure and phase composition parameters of a reaction system are monitored in real time through online monitoring equipment, abnormity is found and adjusted in time, and it is ensured that the regulation and control effect is optimal. A distillation or extraction method is adopted for product separation, and proper separation conditions are selected according to target components, so that effective separation and purification of the product are realized.

The invention discloses a method for synthesizing a wide-distribution precursor. Relates to the field of ternary materials. The method for synthesizing the wide-distribution precursor comprises the following steps: S1, carrying out a precipitation reaction of the precursor in a reaction kettle, and maintaining the pH value of a reaction system below a nucleation point of the precursor material; and S2, discontinuously adding pre-prepared seed crystals into the reaction kettle in the reaction process so as to control the particle size distribution of the precursor in the reaction kettle. The method provided by the invention does not need to frequently adjust the pH value to carry out traditional kernel pressing operation, simplifies the process steps, reduces the dependence on the experience of operators, and reduces the problems of particle size fault or excessive kernel generation and the like caused by pH fluctuation.

The utility model relates to the technical field of caprolactam, and particularly provides a high-temperature ammoximation reaction heat utilization system, which comprises an ammoximation reaction kettle and an evaporation tower, a circulating pipeline and a circulating pump are arranged at the lower part of the reaction kettle, an evaporation tower reboiler is arranged in the evaporation tower, an outlet of the circulating pump is connected with an inlet of the evaporation tower reboiler, and the circulating pump is connected with the evaporation tower reboiler. An outlet of the evaporation tower reboiler is connected to a material return port of the ammoximation reaction kettle after passing through a condenser; a steam outlet is formed in the top of the evaporation tower and is connected to a gas pipeline. On the basis of heterogeneous ammoximation, the temperature of a reaction system is increased, high-pressure water vapor is directly generated by reaction heat, the water vapor is used for supplying heat to other sections of caprolactam, the use amount of ammoximation circulating water is reduced, the overall energy consumption of caprolactam is reduced, and the cost is reduced.

The invention discloses a large-driving-force liquid crystal elastomer composite artificial muscle belt and a manufacturing method and application thereof. The preparation method comprises the following steps: reacting a mixed reaction system containing a liquid crystal monomer, a chain extender, a cross-linking agent, a photoinitiator, a catalyst and a nano material to prepare a composite oligomer; and placing the composite oligomer in a mold, removing the solvent, and then carrying out stretching and cross-linking treatment to obtain the liquid crystal elastomer composite artificial muscle band with large driving force. The composite artificial muscle belt can achieve linear contraction under thermal stimulation, and large thrust can be generated in the recovery process; meanwhile, the composite artificial muscle belt can achieve large driving force output without being assembled by an artificial muscle fiber bundle, and the technical problem caused by the fact that a plurality of artificial muscle fiber bundles are assembled to achieve contraction force amplification is solved.

The invention discloses a megawatt pressurized bubbling fluidized bed oxygen-enriched combustion test platform and a combustion method. The platform comprises a feeding system, a pressure swing adsorption oxygen production and gas inlet system, a deslagging system, an oxygen-enriched combustion reaction system and a flue gas and fly ash sampling treatment system. The feeding system adopts a spiral and star-shaped double-path independent pressure feeding unit, and is provided with a multi-stage stock bin, a drying device and a pipeline cooling structure, so that pressurized continuous feeding is realized, and tempering is prevented; the pressure swing adsorption oxygen generation and gas inlet system generates oxygen-enriched gas through a PSA technology, and the oxygen-enriched gas is mixed with CO2 to form a graded oxygen-enriched atmosphere; according to the oxygen-enriched combustion reaction system, accurate temperature control is achieved through an air distribution plate, a reducer pipe and a partition heat exchange device, and generation of NOx is restrained; the problems of unstable fuel supply, unreliable deslagging, low combustion efficiency, difficulty in CO2 enrichment and the like under the high-pressure oxygen-enriched combustion condition in the prior art can be effectively solved.

The invention relates to the technical field of electrochemistry, and discloses a liquid-phase electro-catalysis in-situ cell for X-ray absorption spectrum testing, the liquid-phase electro-catalysis in-situ cell is characterized in that a copper working electrode wire, a fixed window and an insertion window are arranged on an electrolytic cell cavity, a cell body top cover is fixedly arranged on the electrolytic cell cavity, the fixed window is located at one side of the electrolytic cell cavity, and the insertion window is located at the other side of the electrolytic cell cavity. The insertion window is positioned on the other side of the electrolytic tank cavity; the liquid layer thickness adjusting assembly is fixedly mounted in the insertion window; the working electrode fixing assembly is fixedly installed in the fixing window. The cavity of the electrolytic tank is of an integrated structure, the light-transmitting tube adopts a 45-degree unfilled corner and an adjustable liquid layer design, rapid switching of transmission and fluorescence modes is supported, screws or adhesive tape fixation is avoided, the integrated cavity shortens the electrode replacement time to be less than 1 minute, the test efficiency is remarkably improved, the liquid leakage risk is reduced, a corrosion-resistant material is matched with an acid / alkaline electrolyte, and the service life of the electrolytic tank is prolonged. The modular structure can be expanded to different reaction systems, and is convenient to modify to adapt to other synchrotron radiation testing technologies.

The invention relates to the technical field of medicine preparation, and discloses a sarafloxacin hydrochloride preparation method, which comprises: preparing a reaction system from salacarboxylic acid, piperazine and a redox medium; applying a pulsed electric field with defined frequency and voltage and ultrasonic irradiation; regulating the surface tension of reaction liquid to form a bubble microreactor; carrying out distributed reaction through a bubble microenvironment carrier; and finally separating and purifying to obtain a high-purity product. According to the method, the purposes of shortening the reaction time and reducing the energy consumption are achieved, the product purity is high, the batch consistency is remarkably improved, and a new way is provided for green and efficient preparation of quinolones.

The invention provides a room-temperature high-chemical-yield ultrasonic enhanced droplet microfluidic synthesis method of perovskite quantum dots. The method comprises the following steps: manufacturing a droplet microfluidic reaction chip with a two-section series double-T-shaped structure, and coupling the droplet microfluidic reaction chip with an ultrasonic vibrator to form a reaction system; the precursor solution, the ligand solution and the acetonitrile solution are injected into a droplet microfluidic reaction chip in proportion, and an ultrasonic vibrator is started to carry out ultrasonic enhancement on the reaction solution. And centrifugally drying the product to obtain the perovskite quantum dots. Compared with the prior art, the method has the following beneficial effects: 1, mass transfer between two phases is accelerated through ultrasonic treatment, the reaction process is enhanced, and the chemical yield and efficiency of the quantum dots are improved; 2, the size of the quantum dots can be regulated and controlled by adjusting the flow rate ratio and the ultrasonic power; 3, the specific surface area of reactants can be increased by utilizing the constructed reaction system, and the reaction conditions can be accurately controlled; and 4, the reaction system is high in automation compatibility degree and suitable for distributed continuous production.

The present application relates to a kind of self-regeneration fixed bed reaction system for multiphase catalytic reaction, belong to fixed bed technical field.The system includes shell assembly, reaction tank assembly, distribution disc assembly and regeneration connecting assembly.Shell is separated to form several sectors, each sector is equipped with reaction tank, and isolation chamber is formed between reaction tank.Regeneration connecting assembly includes upper and lower rotating disc connected by rotating shaft, and inert gas containing cavity is arranged in rotating disc and is communicated with isolation chamber.Driving mechanism rotates rotating disc, so that regeneration pipe is communicated with specific reaction tank and carries out on-line carbon burning regeneration.The present application realizes the continuous production mode of "multi-zone reaction, one area on-line regeneration" by rotating structure, cooperates with the unique scraping seal assembly and elastic buffer structure, solves the pain points such as fast coking of catalyst in high-temperature dehydrogenation and other reactions, frequent switching, easy to string gas and thermal stress damage, significantly improves the production efficiency, operating stability and heat energy utilization rate of device.

The embodiment of the invention provides a preparation method of octahedral Ag2O nano-enzyme and a method for detecting H2O2 through a colorimetric method, and relates to the technical field of H2O2 detection. The method for detecting H2O2 by using the colorimetric method comprises the following steps: step S11, taking a plurality of centrifugal tubes, adding quantitative Ag2O solution and H2O2 with different concentrations into each centrifugal tube, and uniformly mixing; step S12, adding a NaAc-Hac buffer solution and a TMB (Tetramethylbenzidine) solution into each centrifugal tube treated in the step S11 to form an Ag2O-TMB-H2O2 reaction system, heating the Ag2O-TMB-H2O2 reaction system in each centrifugal tube in a water bath for a preset time, and observing the color change of the solution in each centrifugal tube; and step S13, determining a light absorption value of the Ag2O-TMB-H2O2 reaction system at a preset wavelength through an ultraviolet photometer, and recording data. The method for detecting H2O2 through the colorimetric method has the advantages of being simple in operation process, accurate in detection, visual in result and the like.

The invention provides a reaction system for preparing aromatic hydrocarbon through hydrogenation of carbon dioxide. The reaction system comprises an injection loop reactor, a rectification device and a recycle gas separation device, the injection loop reactor comprises a reaction kettle, a circulating pump, a reaction heat exchanger, a cross-flow filter and a Venturi injector which are communicated in sequence; part of the Venturi ejector is arranged in the reaction kettle, and the circulating gas separation device comprises a primary condenser, a secondary condenser, an absorption tower and a desorption tower which are communicated in sequence; the device further comprises a circulating gas heater. The jet loop reactor is adopted as key process equipment to perform carbon dioxide hydrogenation reaction to continuously prepare aromatic hydrocarbon, reaction fluid circulates in a loop in a large flow manner and is jetted at a high speed by the Venturi jet, and negative pressure is formed at a working nozzle, so that process gas is sucked into the jet to form micron-sized bubbles with large specific surface area, and the aromatic hydrocarbon is continuously prepared. Gas-liquid-solid contact is increased, the gas-liquid-solid multi-phase reaction speed can be increased, the reaction efficiency is improved, and therefore the air speed is increased under the condition that the yield is guaranteed.