33 results about "Reaction field" patented technology

The invention relates to the technical field of atmospheric environment intelligent treatment, and discloses an ozone pollution dynamic prediction and control area discrimination method and system based on mixed symbol-numerical reasoning. The method comprises the following steps: constructing a knowledge graph oriented to the atmospheric photochemical reaction field, wherein the knowledge graph comprises chemical species nodes and edges with temperature-irradiance dependent reaction rates; taking the knowledge graph as a chemical kinetics constraint, taking real-time monitoring data as input, guiding the large model to carry out end-to-end prediction on the ozone peak concentration, and introducing a chemical kinetics consistency penalty term; reversely updating the reaction rate weight in the knowledge graph based on the prediction error and the residual error of the observation value to form a closed-loop optimization mechanism; and judging whether the current atmospheric environment belongs to a VOC control region, a NOx control region or a transition region by combining the uncertainty of large model prediction and the VOC dominant reaction path confidence of the knowledge graph. According to the invention, credible discrimination of ozone generation dominant factors on the principle level is realized.

The invention provides a hydrogen storage and transportation vehicle, a hydrogen storage and transportation method and application, the hydrogen storage and transportation vehicle comprises a vehicle body, a reaction device or a reaction system capable of realizing continuous production is carried on the vehicle body, and the reaction system capable of realizing continuous production comprises a raw material bin, an isolation bin, a reaction device and a collection tank which are connected in sequence; the reaction device comprises one or more reactors, and when a plurality of reactors are arranged, the plurality of reactors are connected in parallel and / or in series. The hydrogen storage and transportation vehicle aims at improving the vehicle structure and carrying a reaction device capable of achieving continuous production, improving the hydrogen carrying capacity and transportation efficiency, reducing the transportation cost, ensuring the safety and stability of hydrogen in the transportation process, completing the dehydrogenation process in the reaction device, meeting the hydrogen supply requirement of a mobile hydrogen refueling station, and improving the hydrogen storage and transportation efficiency. And wide application of hydrogen energy is promoted. The hydrogen storage and transportation vehicle can also be applied to the reaction field of stirring various phase state materials such as solid-solid, solid-liquid, liquid-liquid, gas-liquid and gas-solid.

The invention provides a method for efficiently treating peculiar smell substances in a water body of an aquatic bird inhabiting water area in a wild animal park, and belongs to the technical field of water treatment deodorization. The method comprises stock processing and shift processing. Wherein the stock treatment method comprises the following steps: in bird pond treatment, a wave cracking nano mesoporous material is spread to improve a bottom mud habitat, meanwhile, a wooden tray is used as a basis, a bagged adsorption material is bound, and a nano biological reaction field is constructed. The displacement treatment method comprises the following steps: constructing an ecological diversion canal near a water area for inhabiting aquatic birds, constructing an artificial wetland by taking a wave splitting nano mesoporous material as a matrix in the ecological diversion canal and assisting with emergent aquatic plants, degrading peculiar smell substances and improving water quality, and then returning to the main bird pool. The method disclosed by the invention has the capabilities of keeping stable and long-acting peculiar smell removal and improving water quality.

The utility model relates to the technical field of reaction kettles, and discloses a reaction kettle cover body connecting mechanism, which comprises a reaction kettle main body and a cover plate, the outer wall of the cover plate is fixedly connected with an arc plate, the surface of the cover plate is provided with a connecting groove, a connecting assembly is arranged between the reaction kettle main body and the cover plate, and the connecting assembly comprises a hinge plate, the hinge plate is hinged to the interior of the connecting groove, the bottom surface of the hinge plate is fixedly connected with a rotating shaft, the outer wall of the rotating shaft is rotatably connected with a fixed seat, and the fixed seat is fixedly connected to the outer wall of the reaction kettle main body. According to the reaction kettle cover body connecting mechanism, through a composite structure of the hinge plate and the rotating shaft, the cover plate can realize two modes of rotary opening (suitable for daily material adding) and circumferential overturning opening (rotating around the rotating shaft to the side surface and suitable for large-scale component overhauling), opening and closing can be completed without tools, the operation time of a single person is shortened, and the working efficiency is improved. The device is suitable for chemical reaction scenes requiring frequent uncovering.

The utility model discloses a clarification device suitable for impurity removal by a chemical precipitation method. A clarification barrel is divided into a semi-closed barrel-shaped structure and an annular interlayer through a barrel-shaped baffle. Mixed liquid flows in from the liquid inlet pipe and is mixed and stacked at the bottom of the semi-closed structure. Along with the continuous increase of the volume of the mixed liquid, the mixed liquid moves upwards along with the cylindrical baffle plate and settles under the gravity action and the step-by-step throttling action of the baffle plate II, the sediment flows downwards under the gravity action and is accumulated to the bottom of the clarifying cylinder, and the filtrate flows into the annular interlayer along the gap between the cylindrical baffle plate and the clarifying cylinder; and carrying out secondary natural sedimentation in the annular interlayer. The device has the functions of clarifying a reaction place and prolonging the staying time of a mixed solution, so that the mixed solution is separated in the mixing and clarifying reaction process and does not completely depend on subsequent separation of a filter press, the yield and efficiency of the clear solution are remarkably improved, and the economical efficiency of the clear solution is also improved.

Provided is a reduction device which can be manufactured inexpensively and easily, has a wide reaction field, enables a reduction reaction even with low-energy light rays such as visible light, and has a long catalyst life. The reduction device of the present disclosure is characterized by containing diamond particles. It is preferable that the diamond particles are contained in the form of a diamond particle dispersion. It is preferable that the diamond particles include nanodiamond particles having a particle diameter of 1 [mu] m or less. It is preferable that the diamond particles comprise detonation nanodiamond particles.

The present disclosure relates to a method of producing particles that include first particles each having a core portion, a gap portion, and an outer portion and each made of a nickel-containing transition metal composite hydroxide. In the method of producing particles according to the present disclosure, a pH of the Taylor vortex reaction field at a liquid temperature of 25° C. is 12.5 or less, a first crystallization is performed in which the crystallization is allowed to proceed at an oxygen concentration of the Taylor vortex reaction field of 3.5 vol % or less, a second crystallization is performed in which the oxygen concentration of the Taylor vortex reaction field is changed to a range of 5 vol % to 65 vol % and the crystallization is allowed to proceed, and a duration of the first crystallization is from 40% to 90% of a total crystallization duration.

This invention discloses a catalyst for electrocatalytic C-N coupling reaction and its preparation method, relating to the field of electrocatalyst technology. The invention introduces an ordered multidimensional interface between Cu2O nanowires (NWs) and Cu2Se nanosheets (NPs) to enrich the local reaction field at the active site of the electrocatalyst. Through in-situ electrochemical epitaxial growth, Cu2O NWs are arranged in an ordered manner along the triple symmetry axis of the Cu2Se (111) crystal plane. Due to the interface confinement effect between 2D NPs and 1D NWs, this multidimensional structure can accumulate the local reaction field and achieve high-density enrichment at the active site, thereby promoting rapid reaction kinetics in urea electrokinetics and achieving ultra-high yield.

The application provides a continuous turbulent tubular reactor for preparing 2,5-dihydroxy-1,4-dithiane, relates to the technical equipment field of organic synthesis, and comprises a cylindrical reaction cavity, a shell coaxially fixed outside the reaction cavity, a closed annular cooling cavity left in the middle, a stirring shaft connected at both ends of the shell, a driving motor connected at one side of the stirring shaft, staggered conical protrusions fixed to the outer wall of the stirring shaft and continuous spiral blades fixed to the conical protrusions, and a temperature sensor arranged in the reaction cavity. The application forms a fluid turbulent reaction field through the composite stirring structure of the spiral blades and the conical protrusions, forms a double-channel cooling mode through the cooling cavity and the cooling channel, and can solve the problems of many impurities, low efficiency and high cost in the process of preparing 2,5-dihydroxy-1,4-dithiane in the prior art.

To provide a synthesizer capable of increasing the synthesis efficiency of ammonia.SOLUTION: A synthesizer comprises a plasma production device which produces plasma in a reaction field supplied with a raw material gas including nitrogen, an electrochemical cell which decomposes steam to produce hydrogen in the reaction field, and a controller which operates the plasma production device after operating the electrochemical cell. The controller may operate the plasma production device when determining that the reaction field meets conditions. The controller may operate the plasma production device based upon an electric signal of a hydrogen sensor, a steam sensor, a timer device, or a measuring device.SELECTED DRAWING: Figure 1

The invention relates to the technical field of biological sample treatment, in particular to a sample treatment system which comprises a micro-fluidic chip, a positive pressure source and a negative pressure source, the micro-fluidic chip comprises a reaction chamber, a first chamber and a liquid outlet side, the first chamber is communicated with the reaction chamber and is used for storing reagents; a filtering structure is arranged between the reaction chamber and the liquid outlet side, and waste liquid output by the reaction chamber is filtered by the filtering structure and then is discharged to the liquid outlet side; the positive pressure source is used for providing positive pressure to drive the reagent in the first chamber to be pressed into the reaction chamber; the negative pressure source is used for providing negative pressure to drive waste liquid output by the reaction chamber to flow to the liquid outlet side after being filtered by the filtering structure; according to the invention, a sample reaction place is transferred from conventional experimental consumables to the micro-fluidic chip for operation, so that the steps of reagent adding, reaction, waste liquid removal and the like are all carried out on the chip, the use of a mechanical arm for pipetting is avoided, the integration of the system is improved, and the volume of the instrument is reduced; and the design of the filtering structure can reduce sample loss during waste liquid output.

The invention relates to the technical field of reaction kettles, in particular to a gas distributor of a reaction kettle. Comprising a supporting rod, a fixing assembly, a plurality of distribution discs and an air inlet pipeline. The fixing assembly is arranged on the outer wall of the supporting rod, the multiple distribution discs are arranged in the axial direction of the supporting rod in a spacing-adjustable mode, air cavities are formed in the distribution discs, and multiple exhaust pipes used for exhausting air are arranged on the disc faces of the distribution discs in a swinging mode; the air inlet pipeline is arranged at the upper end of the supporting rod and is communicated with the air cavity of each distribution disc; according to the gas distributor disclosed by the invention, the distance between the plurality of distribution plates can be flexibly adjusted according to the filling amount, the liquid level height and the like of the reaction kettle, so that'static partitioning 'in the axial direction of the reaction kettle is realized; meanwhile, the exhaust pipe capable of swinging at a low speed is arranged on each distribution disc, so that dynamic partition in the radial direction is realized; the fundamental defect of a traditional fixed distributor is overcome, and the technical leap from passive uniform gas distribution to active optimization of a reaction field is realized.

The invention provides a reactive infiltration process numerical simulation method based on COMSOL multi-physics field coupling, which comprises the following steps: constructing a simplified liquid silicon infiltration model, and simulating a pore structure of a porous body by adopting a two-dimensional single capillary equivalent model; based on the liquid silicon infiltration model, coupling a laminar flow-level set two-phase flow field, a chemical reaction field, a dilute substance transfer field and a fluid heat transfer field to form a multi-physical field numerical model; and a liquid silicon permeation height curve, concentration distribution and pore structure evolution data are obtained through transient solution. According to the method, the time cost required by calculation is saved by simplifying the model, meanwhile, the accuracy of the model can be ensured, and the pore structure change in the reaction infiltration process is predicted according to the reaction layer change rule obtained through simulation; the problem that in the prior art, pore closing critical conditions and a reaction-permeation dynamic coupling mechanism are lack of systematic revelation is effectively solved, theoretical support is provided for directional regulation and control of prefabricated body pore parameters and optimization of process parameters, and the method has remarkable innovativeness and practicability.

A technique that can detect a target substance in a sample with higher sensitivity and at lower cost than a conventional technique is provided, which is a target substance detection method including: in a first reaction field, forming a complex by sandwiching a target substance between a first trapping substance immobilized on a solid phase and a second trapping substance labeled with the labeling substance, and separating a moiety including the labeling substance from the complex and moving it through a liquid filled in a tubular channel by a centrifugal force; and detecting the moiety including the labeling substance by light scattered by the moiety including the labeling substance.

The invention discloses a continuous flow photochemical reaction instrument, and belongs to the technical field of photochemical reaction equipment, the continuous flow photochemical reaction instrument comprises a photochemical reaction instrument body, the middle part of the photochemical reaction instrument body is provided with a reaction chamber, and the inner wall of the reaction chamber is provided with irradiation lamp beads; the top of the reaction chamber is of an opening structure and is movably inserted with a reaction insertion assembly, the reaction insertion assembly comprises an insertion column body, the top of the insertion column body is respectively provided with a liquid inlet nozzle and a liquid outlet nozzle, and a transparent tube wound on the insertion column body is connected between the liquid inlet nozzle and the liquid outlet nozzle; and the liquid inlet nozzle is connected with a peristaltic pump assembly through a pipeline. By adopting the continuous flow photochemical reaction instrument, continuous reaction can be realized, the photochemical reaction efficiency and stability can be improved, and the continuous flow photochemical reaction instrument has integrated design, is beneficial to simplifying the operation process and has higher reaction scene adaptability.

The invention discloses a calorimetric reaction container for a calorimeter, and belongs to the field of calorimetric reaction.The calorimetric reaction container comprises a reaction container main body, a liquid adding piece is arranged at the top of the reaction container main body, a connecting piece is arranged between the reaction container main body and the liquid adding piece, and a feeding mechanism is arranged on the outer surface of one side of the reaction container main body; by arranging the feeding mechanism, raw materials are added into the conveying shell, then the output end of the rotating motor drives the threaded rod to rotate, then under the action of the threaded rod, the conveying shell moves towards the interior of the reaction container body, and adding of the solid raw materials is completed under the condition that it is guaranteed that the conveying shell is not separated from the reaction container body and is continuously sealed; the problems that when solid raw materials are added in the prior art, a reaction container body needs to be opened, operation is not convenient, the reaction container body loses the sealing state, heat loss is caused, and the accuracy of experimental data is affected are solved.

This invention discloses a method for multi-reaction field coupled numerical simulation and optimization of deep well reinjection of mine water. The method is as follows: First, the basic parameters of the reinjection reservoir and reinjection water are obtained, and a multi-reaction field coupled mathematical model including stress field, temperature field, etc., is established. Based on this model, a three-dimensional numerical model containing continuous medium and discrete fracture network characteristics is constructed, and boundary and initial conditions are set. Then, engineering evaluation indicators are obtained through multi-scheme simulation, and a multi-objective optimization function is constructed accordingly. A multi-objective optimization algorithm is used to find the optimal solution and output the Pareto optimal solution set. Finally, the selected scheme is substituted into the high-precision model for verification. After ensuring that indicators such as mass conservation error meet the standards, the final design scheme is output. This method realizes multi-field collaborative simulation and accurate parameter optimization, ensuring the safety and effectiveness of reinjection projects.

The invention discloses an experimental observation device for preparing Fe2O3 through an in-situ synthesis method, and relates to the technical field of experimental equipment, the experimental observation device comprises a hollow reaction box, a partition plate is arranged in the reaction box, a plurality of reaction places are provided, and a container is arranged in each reaction place; the light source adjusting mechanism is fixedly arranged on the side wall of the reaction box, and the light source adjusting mechanism is used for adjusting a light source entering the reaction box; the hanging column mechanism is fixedly arranged above each container in the reaction box; the connecting branch pipes are arranged in the reaction places, one end of each connecting branch pipe is connected to the light source adjusting mechanism, and the other end of each connecting branch pipe is connected to the davit mechanism and used for providing an irradiation light source for the davit mechanism. According to the device, the accurate reaction process collection function can be achieved, the requirements of various experiment schemes are met, and the practicability of the device is greatly improved.

The application belongs to the field of membrane separation technology, and relates to a preparation method of a separation membrane with a pattern structure and water filtration application thereof. The method comprises the following steps: firstly, spinning is performed on an aqueous phase spinning solution by using a spinning device, and after jet phase separation and solidification, a fiber membrane is formed on a hollow receiving plate; then the aqueous phase spinning solution is changed from a jet stream into a sprayed droplet, which is sprayed on the fiber membrane and forms an aqueous phase liquid film inside; further, an oil phase interface reaction field regulation system is used to convert an oil phase solution into an aerosol and spray the aerosol on the fiber membrane; by regulating the concentration of the aqueous phase spinning solution, the concentration of the oil phase aerosol and the spraying rate, the interface polymerization reaction rate of the aqueous phase monomer and the oil phase monomer is controlled, and a separation membrane with a pattern structure is prepared. The separation membrane prepared by the application has excellent structural stability, the pattern structure is controllable, the filtration efficiency of 0.1-10 mu m particles is greater than or equal to 95%, the water flux is greater than or equal to 300 L·m ‑2 ·h ‑1 , and has a wide application prospect in the field of water filtration.

This invention relates to the technical field of reaction vessels, and more particularly to a gas distributor for reaction vessels; it includes a support rod, a fixing assembly, multiple distribution discs, and an inlet pipe; the fixing assembly is disposed on the outer wall of the support rod, the multiple distribution discs are arranged along the axial direction of the support rod with adjustable spacing, each distribution disc has an internal gas cavity, and multiple exhaust pipes for discharging gas are oscillating on the surface of the distribution discs; the inlet pipe is disposed at the upper end of the support rod and communicates with the gas cavity of each distribution disc; the gas distributor of this invention can flexibly adjust the spacing between the multiple distribution discs according to the filling amount and liquid level of the reaction vessel, realizing "static zoning" in the axial direction of the reaction vessel; at the same time, the exhaust pipes on each distribution disc that can oscillate at low speed realize "dynamic zoning" in the radial direction; it overcomes the fundamental defects of traditional fixed distributors and realizes a technological leap from "passive uniform gas distribution" to "active optimization of the reaction field".

The utility model provides reaction equipment, and relates to the technical field of reaction detection. The reaction equipment comprises a reaction assembly and a detection assembly, the reaction assembly comprises a reaction chamber, a gas inlet end and a gas outlet end; the reaction chamber is respectively connected with the gas inlet end and the gas outlet end; the reaction chamber is configured to provide a reaction place for physicochemical reaction; the gas inlet end and the gas outlet end are configured to provide a passage for gas flowing through the reaction chamber; the detection assembly comprises a first detection element, a second detection element and a third detection element; the first detection element is arranged at the air inlet end; the second detection element is arranged in the reaction chamber; the third detection element is arranged at the air outlet end; the first detection element, the second detection element, and the third detection element are configured to monitor material characteristics at their locations. The reaction equipment provided by the utility model can monitor the material characteristics inside and at the two ends of the reaction chamber in real time, and data provided by the reaction equipment can be used for adjusting reaction parameters in real time or used for subsequent data analysis and optimization.

The application discloses a kind of reduced-order model driven distributed parameter system reaction physical field control method and system, comprising: the process mechanism of reaction physical field in industrial process is sparsely identified, and process mechanism is embedded neural network, to construct the time-space reduced-order prediction model of reaction physical field;Then energy response metric quantifies the dynamic response of spatial point of distributed parameter system, from which several key spatial points are screened with significant energy dynamic response;Again, the optimal reaction physical field set value of key spatial point is used as control target, the reaction physical field of key spatial point is predicted through time-space reduced-order prediction model, and the input of control system is optimized rolling, to realize the regulation of reaction physical field.The application can significantly improve the control precision of distributed parameter system reaction physical field and process index.

The invention discloses a carbon fiber surface rapid desizing and etching method. The method comprises the following steps: preparing a composite solvent; the method comprises the following steps: immersing carbon fibers to be treated into a composite solvent, and treating at 40-80 DEG C for 2-20 minutes; directly introducing oxidizing mixed gas into the composite solvent to form a gas-liquid micro-interface reaction field; and heating to 180-400 DEG C at a certain rate, synchronously regulating and controlling the flow of the oxidizing mixed gas, and completing etching on the surface of the carbon fiber. According to the method, the slurry on the surface of the carbon fiber is efficiently removed through the compound solvent, the surfactant and the initiator, the oxidizing mixed gas is introduced into the compound solvent, a gas-liquid micro-interface reaction field is formed, and etching on the surface of the carbon fiber is completed, so that the roughness is improved, the treatment efficiency is greatly improved, the production cost is reduced, damage to the carbon fiber is small, and the method is suitable for industrial production. The original performance of the carbon fiber can be kept, quality guarantee is provided for subsequent composite material preparation, and the method has wide applicability.

The invention relates to the technical field of deep purification and resource recycling of heavy metal wastewater, and particularly discloses a synchronous removal and recycling method for complex-state heavy metal wastewater based on multi-stage potential regulation and control. According to the method, a dynamic electrochemical-biological confinement reaction field is formed on an anode-extracellular polymeric substance (EPS) interface, so that coordination and unification of electrochemical decomplexing, directional migration and in-situ deposition of complex-state metal are realized. The system adopts a multi-stage constant potential operation mode to drive complex dissociation and metal-phosphate co-deposition. The obtained sediment is of a flower-shaped hierarchical structure, the purity can reach 85% or above, and the removal rate of target metal exceeds 70%. The method is operated at normal temperature and normal pressure, does not need additional chemical oxidants, has the characteristics of greenness, controllability and recycling, and is suitable for advanced treatment and metal recovery of wastewater containing complex-state heavy metals in the industries of electroplating, circuit boards, metallurgy, chemical engineering and the like.

To provide a system, an apparatus and a method for producing an unsaturated hydrocarbon, capable of making reaction conditions mild and improving the selectivity of a product.SOLUTION: The system for producing an unsaturated hydrocarbon includes a methane supply unit that supplies methane to a reaction field, a plasma generation unit that generates plasma in the reaction field to convert methane into a hydrocarbon having 2 or more carbon atoms, and an electrochemical cell including an anode, an electrolyte exhibiting proton conductivity in which the anode is disposed, and a cathode disposed in the electrolyte, in which the electrochemical cell electrolyzes the hydrocarbon in contact with the anode to convert the hydrocarbon into the unsaturated hydrocarbon.SELECTED DRAWING: Figure 2

Provided is a method for controlling a flow-type reaction device having a plurality of reaction fields in which two or more types of chemical substances as raw materials are continuously supplied, respectively, and the raw materials are mixed and chemically reacted, the flow-type reaction device switching between an operating reaction field and a standby reaction field, the control method comprises the following steps: acquiring priorities respectively corresponding to each reaction field; and a step of determining the reaction field to be operated according to the priority determined on the basis of the use performance data of each reaction field.

The invention relates to a device and a method for testing the quantity of solid-liquid reaction gas under a heating condition, and the device comprises a reaction mechanism which is used for providing a solid-liquid reaction place and comprises a reaction container and a liquid container, and the bottom of the liquid container is provided with a liquid outlet which can be opened and closed; an intermediate cooling mechanism for cooling the reaction gas discharged from the reaction vessel; and the measuring mechanism is used for measuring the gas quantity of the cooled reaction gas and comprises a measuring water tank, a gas storage container and a water container capable of receiving water discharged from the measuring water tank, a liquid level sighting device capable of measuring the internal liquid level of the measuring water tank is further arranged beside the measuring water tank, and the gas storage container can receive the reaction gas discharged from the intermediate cooling mechanism. Compared with the prior art, the device has the advantages that the influence of dead volume measurement and different gas properties and temperatures can be eliminated, and the reaction gas production rate can be measured while the generated gas is stored and collected.

The invention discloses a clean combustion method of ammonia fuel, which realizes systematic purification gain through three-field dynamic coupling of a flow field, a reaction field and a sound field. The metal cage serves as a structured reactor, the grid structure of the metal cage reshapes a flame peripheral flow field, a stable low-speed vortex region is formed, the retention time of pollutants is prolonged, and favorable conditions are created for catalytic reaction. The composite catalyst loaded on the cage body efficiently captures and converts pollution molecules in the optimized flow field; periodic pressure oscillation is introduced into sound waves with specific frequency, a gas boundary layer is disturbed, mass transfer driving force of pollutants to the surface of the catalyst is greatly enhanced, the surface of the catalyst is continuously scoured through micro-scale gas flow pulsation, and a dynamic online self-cleaning mechanism is formed; the platinum, the copper and the lanthanum strontium cobalt iron form a closed loop of a metal cage optimized flow field, sound wave enhanced mass transfer and cleaning and efficient conversion of the catalyst, in-situ deep purification of pollutants is achieved, and the initiative platinum-copper-lanthanum strontium cobalt iron composite catalyst constructs an oxidation-reduction dual-function synergistic system.

Based on the regulation of the direction of the heat triggered reaction, lithium-silicon alloy powder and electrode preparation method, 1) put the lithium source on the edge of the silicon powder on the hot plate, ensure physical contact; 2) by limiting the thickness of the silicon powder, the temperature distribution of the reaction field is regulated, and the direction of the heat triggered lithium-silicon spontaneous reaction is limited, Li 4.1 Si is synthesized; 3) DOL is used as a solvent, PEO is used as a binder, and SP is used as a conductive agent to prepare an electrode containing Li 4.1 Si. The hot plate method is suitable for nano-sized to micro-sized silicon powder, and the lithium-silicon chain reaction can be triggered above 180℃, and the production scale can be expanded with the expansion of the size of the hot plate. After the reaction is completed, there is no excess lithium in the product, and lithium-silicon alloy powder can be quickly obtained. DOL and PEO retain the electrochemical activity of Li 4.1 Si, suitable for preparing electrodes. The preparation process of the invention is simple and practical, low in cost, and easy to realize large-scale commercial production.