36 results about "Heat pretreatment" patented technology

The application relates to a molecular beam epitaxy preparation method of epitaxial high-quality AlN on a Si substrate and an AlN epitaxial wafer, and the preparation method comprises the following steps: S1, obtaining a substrate, performing infrared lamp baking on the substrate, performing high-temperature deoxidization after heating pretreatment, and obtaining a pretreated substrate; S2, adopting a molecular beam epitaxy method to pre-deposit an Al layer on the pretreated substrate; S3, adopting the molecular beam epitaxy method to grow an AlN epitaxial layer on the pre-deposited Al layer; and S4, continuously introducing a nitrogen plasma post-treatment, and cooling to a wafer transfer temperature to obtain an epitaxial wafer. In the technical scheme, the pre-deposited Al layer can inhibit the reaction between the substrate and N in the AlN layer, the formation of amorphous particles is avoided, the AlN morphology is improved, meanwhile, the pre-deposited Al layer not only relieves the lattice mismatch problem between the substrate material and the AlN, but also improves the Al atom migration rate for the growth of the subsequent AlN layer, promotes two-dimensional growth, and thus the AlN crystal quality is improved.

The invention belongs to the technical field of antibiotic mushroom dreg resourceful treatment, and particularly relates to a method for cooperatively treating antibiotic mushroom dregs based on hydrothermal-pyrolysis and advanced oxidation. The method comprises the following steps: carrying out hydrothermal pretreatment on antibiotic mushroom dregs at 120-200 DEG C, and carrying out solid-liquid separation to obtain hydrothermal solid residues and hydrothermal bacterium liquid; the hydrothermal solid residues are subjected to a pyrolytic reaction at the temperature of 300-550 DEG C, and gaseous combustible gas, liquid bio-oil and solid biochar generated by the pyrolytic reaction are collected respectively; the method comprises the following steps: mixing solid charcoal with a fluorine element precursor, and carrying out heat treatment at 600-800 DEG C to obtain a fluorine-doped charcoal catalyst; and adding a persulfate oxidant and a fluorine-doped charcoal catalyst into the hydrothermal bacterial liquid for catalytic oxidation degradation treatment to obtain a harmless small-molecule carbon source solution. The method systematically solves the problem of treatment of high-water-content and high-toxicity organic waste residues, and synchronously achieves the three targets of reduction, harmlessness and recycling.

The application discloses a sludge hydrothermal pretreatment device, which comprises an integrated tank, wherein the integrated tank is fixedly installed on the ground, the integrated tank is connected with a high-temperature steam input pipe, the lower part of the integrated tank is arranged as a reaction zone, the reaction zone is divided into multiple sub-zones, the upper part of the integrated tank is arranged as a flash evaporation zone, at least two flash evaporation tanks are arranged in the flash evaporation zone, the other regions of the upper part of the integrated tank are arranged as temperature rising zones, the temperature rising zones are communicated with the reaction zone, stirring pieces are rotatably installed in the reaction zone, the stirring pieces are connected with stirring drives, a connecting pipe is installed between the discharge end of the reaction zone and the feeding end of the flash evaporation zone, and the connecting pipe is provided with a control valve. Through the arrangement of the multiple sub-zones, the sludge in the sub-zones enters the flash evaporation tanks zone by zone, the sludge in other sub-zones continues to react, the time for the sludge in the flash evaporation tanks to wait for the reaction in the reaction zone is reduced, and the working efficiency is improved.

The application belongs to the technical field of health food, and particularly relates to an aquilaria sinensis leaf oral liquid and a preparation method thereof. The steps comprise the following steps: S1: taking the artificial planting aquilaria sinensis leaf, cleaning and cutting, to obtain clean raw materials; S2: spraying purified water to the raw materials, adjusting humidity, and uniformly watering in a closed state, to obtain humidified leaves; S3: steam short-time high-temperature treatment of the humidified leaves in a closed humid heat environment, and then cold air rapid cooling, to obtain pretreated leaves; S4: water extraction of the pretreated leaves, to obtain a water extract; S5: filtration and centrifugation of the water extract, and reduced pressure concentration, to obtain a clear concentrated solution; S6: addition of food additives to the concentrated solution, to obtain a blending solution; S7: precision filtration, sterilization and filling of the blending solution, to obtain the artificial planting aquilaria sinensis leaf oral liquid. The application adjusts humidity and wet heat pretreatment by water extraction, passivates endogenous oxidase, relaxes leaf tissue, significantly reduces enzymatic browning and sediment formation, and improves flavor coordination.

The invention discloses a shape-stabilized phase change thermal management material, a preparation method thereof and application of the shape-stabilized phase change thermal management material as a thermal management material in a high-power electronic component, and belongs to the field of functional composites.The shape-stabilized phase change thermal management material is prepared by the steps that firstly, fresh pomelo peel is subjected to alkalization and hydrothermal pretreatment, and then ZIF-67 grows on the pretreated pomelo peel in situ; then, the obtained Pre-PP ZIF-67 is subjected to high-temperature calcination to prepare a high-graphitization heterogeneous carbon material, and finally, a phase change material is packaged in a pore channel of the high-graphitization heterogeneous carbon material by adopting a physical infiltration method to prepare the high-performance shaped phase change thermal management material. The prepared phase change heat management material has the advantages of excellent heat conductivity and heat storage performance, good adaptability and operability, lasting stability and reliability, wide application range, reusability and the like, and a new thought is provided for research and development of the high-performance phase change heat management material.

The invention relates to the technical field of ferrous metallurgy, and discloses a rolling temperature control process for improving the surface quality of an alloy pipe blank T12, which comprises the following steps: S1, preheating pretreatment of a casting blank, S2, segmented heating control of a heating furnace, S3, precise calibration of tapping temperature, S4, dynamic temperature control in a rolling process, S5, slow cooling treatment after rolling, and S6, whole-process temperature monitoring and adjustment. According to the process, the risk of initial thermal stress is reduced, specifically, the preheating temperature is stabilized at 400-600 DEG C through segmented preheating and stepped heating control before the casting blank enters a furnace, the temperature difference between the surface and the core of the casting blank is effectively reduced, initial thermal stress generated due to the too large temperature difference is avoided, generation and expansion of subsurface cracks are prevented from the rolling source, a brittle zone is avoided, and the production efficiency is improved. Material plasticity is improved, specifically, the staying time of the steel billet in a brittleness interval is shortened by rapidly passing through a low-temperature section of a third brittleness temperature zone through a segmented heating process; and the temperature is subsequently increased to 1180-1250 DEG C, heat preservation is conducted for 2.0-4.0 h, it is ensured that the steel billet is completely austenitized, grains are refined, the material brittleness is remarkably reduced, and the crack resistance in the rolling process is enhanced.

The utility model relates to the technical field of sizing material heating, and discloses a warming and heating assembly for sizing material heating pretreatment, which comprises a conveying pipe, one end of the conveying pipe is connected with a sizing material inlet pipe, the other end of the conveying pipe is connected with a sizing material outlet pipe, and one end of the conveying pipe adjacent to the sizing material inlet pipe is provided with a motor. A temperature controller is installed at the end, close to the glue outlet pipe, of the conveying pipe, a rotating shaft is arranged in the conveying pipe, spiral blades are installed on the outer wall of the rotating shaft, a through hole is formed in the end, facing the temperature controller, of the rotating shaft, and a heating wire is inserted into the through hole. When glue is injected into the glue inlet pipe, the motor drives the rotating shaft and the spiral blade to convey the glue in the conveying pipe, the temperature controller controls the heating wire to work, the heating wire heats the rotating shaft and the spiral blade, and the spiral blade on the rotating shaft can serve as a heat conduction fin to evenly heat the glue in the conveying pipe. As the heating wire is arranged in the conveying pipe, heat of the heating wire is conducted into the conveying pipe from the rotating shaft.

The application relates to the technical field of food brewing processing, and discloses a method for preparing walnut soy sauce by using segmented wet heat pretreatment combined with multi-strain fermentation, which comprises the following steps: subjecting walnut meal to dry heat treatment, adjusting humidity, transferring into a high-temperature steam explosion equipment for steam explosion treatment and air cooling; inoculating the air-cooled walnut meal with mixed strains composed of aspergillus oryzae, saccharomyces rouxii and lactobacillus plantarum to prepare koji; adding brine to the koji and carrying out segmented fermentation including three stages to obtain soy sauce mash; adding oil to the soy sauce mash, precipitating the original solution, filtering the clear liquid, cooling the sterilized product to obtain a finished product. The present application combines wet heat pretreatment with multi-strain segmented fermentation, destroys the dense structure of the walnut meal, improves the substrate hydrolysis rate, meets the metabolic conditions suitable for different strains, reduces the substrate competition, shortens the fermentation period, and improves the content of free amino acids and ester substances.

The invention relates to the technical field of building materials, and particularly discloses a preparation process and application of limestone powder. The process mainly comprises the following steps: performing multi-stage crushing and screening on a limestone raw material, and accurately controlling the granularity of a product to be 40-80mm through intelligent closed-loop regulation and control; an activating agent solution is synchronously sprayed in the crushing process, so that in-situ mechanical force chemical activation is realized; the thermal decomposition activation energy of the limestone is fundamentally reduced through controllable damp-heat pretreatment; kiln tail waste gas is used for conducting graded drying and heat treatment on returned materials and finished products; the fine powder is recycled as a desulfurizing agent, and a final finished product can be reinforced by a nano material. According to the process, particle size control, material activation and system energy conservation are deeply coupled, the prepared limestone powder is uniform in particle size and high in calcination activity, the activity of lime products can be remarkably improved when the limestone powder is used for calcination in a lime kiln, energy consumption is reduced, and zero emission of solid waste is achieved.

The utility model belongs to the garbage can technical field, especially for a kind of biological garbage composting machine of optimization ventilation system, including the reaction container being installed in shell, and for rotating agitator in reaction container, there is full-flow interlayer for air flow between shell and reaction container, the side of reaction container close to composting garbage can back is provided with the inner air inlet for air to enter reaction container, air is heated after passing through heating pretreatment module and is delivered to reaction container inside by inner air inlet, the side opposite to inner air inlet is provided with the inner air outlet for making gas in reaction container exhaust, part of hot air entering reaction container can heat garbage, another part then enters full-flow interlayer by inner air outlet, in the process of reverse flow of hot air in full-flow interlayer, hot air directly heats reaction container, to heat reaction container quickly, avoid the temperature of edge lower, leading to the situation of insufficient fermentation at edge.

The present application relates to the technical field of lithium ion batteries, and discloses porous graphene, a preparation method thereof, and application of a conductive agent containing the porous graphene; the preparation method of the porous graphene comprises the following steps: S1, dissolving a weak base in water to form an activation solution; S2, adding graphene into the activation solution to obtain a suspension; the suspension is subjected to heating pretreatment to obtain an activation product; and S3, the activation product is subjected to plasma treatment to obtain the porous graphene. Through the synergistic effect of weak base pretreatment and plasma etching pore treatment, the preparation of the porous graphene is realized in a mild environment of low alkali and low temperature. The method is simple, efficient, low in cost, green and environmentally friendly, low in energy consumption, easy to industrialize, and can prepare the porous graphene with different pore sizes and different pore amounts by changing the plasma radiation conditions.

The invention relates to the technical field of extruders, and particularly discloses a plastic extruder barrel with a partition temperature control structure. The power device is fixedly mounted on one side of the top of the moving seat; the extrusion mechanism is arranged at the top end of the moving seat; the feeding mechanism is arranged on the extrusion mechanism; the partition temperature control mechanism is arranged on the extrusion mechanism; the airflow temperature adjusting mechanism is arranged on the moving seat; the preheating pretreatment mechanism is arranged on the feeding mechanism and is used for providing a preheating keeping area; the machine head is fixedly arranged at the end part of one end, close to the mold, in the extrusion mechanism; the multi-transmission mechanism is arranged on the moving seat, the power output end of the multi-transmission mechanism is connected to the power device, the power output end of the multi-transmission mechanism is connected to the extrusion mechanism and the airflow temperature adjusting mechanism, and the multi-transmission mechanism is used for synchronously starting the airflow temperature adjusting mechanism when the high-pressure extrusion material is extruded. According to the invention, independent heating and independent cooling control can be realized in different partitions, and uniform preheating pretreatment can be synchronously carried out on fed materials.

The invention discloses a mycelium synthetic material processing technology. The process comprises the following steps: carrying out thermal pretreatment on a wet mycelium substrate; an alkaline activated precursor emulsion containing sodium lignin sulfonate and epoxidized soybean oil is infiltrated into the mycelium matrix by using vacuum pulse; then immersing into an acidic phase transformation locking solution containing metal salt, inducing sodium lignin sulfonate to be separated out in situ in pores of the mycelium matrix by utilizing pH gradient, and finishing coordination locking by utilizing metal ions; and after washing and pre-drying, gradient hot-pressing curing is carried out. Deep filling of modified components is achieved through acid-base phase conversion, residual metal ions serve as Lewis acid to catalyze ring opening polymerization of epoxy bonds, and a metal coordination and covalent crosslinking coexisting interpenetrating polymer network is constructed in the material. The obtained material has high density, high static bending intensity and excellent water-resistant stability, and the problems that a traditional mycelium material is loose in structure and poor in mechanical property are solved.

The invention discloses a high-temperature flue gas waste heat pretreatment system, and relates to the technical field of ceramsite calcination. The high-temperature flue gas waste heat pretreatment system comprises a pretreatment device, one end of the pretreatment device is communicated with a flue gas chamber, and the other end of the pretreatment device is communicated with a cloth bag dust removal device; the pretreatment device comprises an inner cylinder and an outer cylinder, and the outer cylinder sleeves the inner cylinder; a first spiral plate and a flue gas channel are arranged in the inner cylinder; a second spiral plate is arranged between the inner wall of the outer cylinder and the outer wall of the inner cylinder; the axis of the second spiral plate is parallel to the axis of the first spiral plate; one end of the first spiral plate is provided with an input end, one end of the second spiral plate is provided with an output end, the input end is connected with a feeding box, and the output end is connected with a receiving bin; and the rotary driving assembly is arranged on the outer wall of the outer cylinder and used for driving the first spiral plate and the second spiral plate to rotate. According to the invention, the utilization rate of flue gas heat is improved without increasing the burden of the bag-type dust removal device.

The invention discloses a preparation method of low-GI-value coarse cereal mixed nutritional rice in the field of functional food processing. The method comprises the following steps: mixing polished round-grained rice flour, whole wheat flour, chenopodium quinoa flour, chickpea flour, oat bran and a special synergistic digestion-resistant starch protein fiber compound, tempering, adding water, stirring, carrying out extrusion forming in a certain temperature interval through a double-screw extruder, cutting, and carrying out segmented drying treatment to finally obtain the finished product. The core lies in preparation of a compound, and the compound is prepared by the following steps: firstly, carrying out moist heat pretreatment on corn starch under the assistance of ultrasonic waves and in the presence of sodium citrate, then carrying out branching modification on the starch for a long time under a mild condition by utilizing glycogen branching enzyme, then compounding with pea protein and inulin, and carrying out spray drying. And finally, embedding with an Arabic gum solution fluidized bed. The method is simple in process, and the prepared nutritional rice is low in glycemic index, good in sensory quality and suitable for industrial production.

The invention relates to the technical field of ferrous metallurgy, in particular to a circulating fluidized bed hydrogen metallurgy system and method with a microwave heating function. The system comprises a raw material feeding subsystem, a microwave heating subsystem, an electric heating subsystem, a hydrogen production subsystem, an air separation subsystem, a circulating fluidized bed reactor, a gas-solid separation device, a material returning device and a gas circulation subsystem. Iron ore powder is fed into the pre-reduction fluidized bed reactor through the raw material feeding subsystem, and enters the circulating fluidized bed reactor to complete final reduction after being subjected to microwave heating pretreatment and hydrogen pre-reduction; materials which are not completely reduced are subjected to circular reaction through a material returning device, and reduced tail gas is subjected to heat exchange and dehydration and then is recycled. The method solves the problems of high-temperature bonding and flow loss of the iron ore powder and low reduction rate and hydrogen utilization rate, carbon is replaced by hydrogen in the whole process, no carbon dioxide is discharged, and the method belongs to an ultra-low carbon ironmaking technology and assists carbon neutralization in the iron and steel industry.

This invention discloses a dual-posture motor creep testing device and method. The device includes an environmental control unit, a dual-posture testing fixture unit, a high-precision measurement unit, and a data acquisition control unit. The dual-posture fixture is interchangeable between vertical and horizontal configurations to adapt to the actual installation posture of the motor. Thermal expansion interference is eliminated through a 60℃ / 72h heat pretreatment. Displacement is measured non-contactly using a laser displacement sensor, and temperature is measured by thermocouples. The actual creep is obtained based on the reading after thermal equilibrium. The method includes clamping, heat pretreatment, calibration, loading, and automatic data acquisition. This invention provides accurate posture, high precision, unattended operation, and reliable data, making it suitable for long-term creep reliability testing of motors in various household appliances.

The application discloses a high-temperature stable spectrum-selective infrared film and a preparation method thereof, and belongs to the technical field of infrared functional materials. The film adopts a Fabry-Perot cavity multilayer structure, and from bottom to top, the film comprises a bottom infrared reflection layer prepared from a high-infrared reflectivity metal, an intermediate medium resonance layer prepared from an infrared transparent semiconductor material, an upper partial absorption layer which is a metal film, and a top encapsulation protective layer prepared from an infrared transparent dielectric material. The intermediate medium resonance layer is a crystal structure formed through heat pretreatment, and the crystal structure fundamentally inhibits the mutual diffusion of elements between film layers and the structural phase change at high temperatures. The design makes the film have low emissivity in the 3-5 mu m and 8-14 mu m atmospheric window wave bands, high emissivity in the 5-8 mu m non-detection wave band, and can be used at a temperature of 600 DEG C for a long time.

The invention belongs to the technical field of electrochemical energy storage and biomass resource utilization, and particularly relates to a method for preparing rice hull-based hierarchical porous carbon based on alkali-assisted hydrothermal pretreatment and a product and application of the rice hull-based hierarchical porous carbon. Alkali-assisted hydrothermal pretreatment: immersing the rice hull powder into an alkaline aqueous solution, mixing, transferring into a high-pressure reaction kettle, reacting, washing to be neutral, and drying to obtain a pretreated solid; pre-carbonization: carrying out heating and heat preservation on the pretreated solid in an inert atmosphere, and carrying out pre-carbonization to obtain a carbon precursor; chemical activation: uniformly mixing the carbon precursor with a chemical activator, heating and preserving heat for activation; and post-treatment: cooling the activated product, washing with a dilute acid solution to remove the residual activating agent and possibly residual ash, washing with deionized water to be neutral, and drying to obtain the graded porous carbon material. The method can be used for simply, conveniently and efficiently preparing the graded porous carbon material on a large scale.

The present invention relates to a process for the preparation of silicates, preferably alkali silicates, from spent foundry sand using a hydrothermal route, comprising the step of reacting said spent foundry sand with a base, preferably an alkali hydroxide, in an aqueous reaction medium, wherein the process does not comprise any thermal pre-treatment step as applied in prior art processes. The present invention also relates to a process for the preparation of precipitated silica using said silicates.

The present application relates to the processing technology field of fritillaria, in particular to a drying method for improving the quality of fritillaria.The present application first adopts a non-thermal pretreatment method of ultrahigh pressure combined with ultrasonic to open the intracellular water dispersion channel of fritillaria hupehensis, and then performs gradient vacuum drying to improve the efficiency of gradient vacuum drying and save energy consumption;The gradient vacuum drying is performed under the condition of oxygen isolation during the whole drying process, and the stage drying temperature is fully controlled, which greatly protects the functional active ingredients, and takes into account the drying efficiency and drying quality.The obtained fritillaria hupehensis has high content of functional ingredients (fritillaria, total phenol, total flavonoids, nucleosides and nucleobases, amino acids), strong antioxidant capacity and excellent quality.The drying method provided by the present application is a high-quality postharvest processing method, which can improve the processing quality of fritillaria hupehensis, improve the market competitiveness, and promote the upgrading of the industry.

The invention discloses a preparation process of a coal-based high-micropore carbon electrode material and application of the coal-based high-micropore carbon electrode material in a supercapacitor, and relates to the technical field of energy storage electrode materials. According to the method, lignite or bituminous coal is subjected to solvent extraction at normal temperature and normal pressure, raffinate is subjected to hydrothermal pretreatment, and efficient activation is realized by adopting a gradient temperature control method of low-temperature pore channel pre-construction-high-temperature short-time etching. Comprising the following steps: performing solvent extraction on a coal sample at normal temperature and normal pressure; carrying out hydrothermal treatment on the extracted heavy component; mixing the hydrothermal product with a chemical activator according to a certain proportion, placing the mixture in a tubular furnace under a protective atmosphere, firstly heating to a primary activation temperature for activation, and then heating to a high activation temperature; and pickling, washing and drying the activated product to obtain the coal-based porous carbon material. The process is green, simple, efficient and energy-saving, and solves the problems of non-uniform contact of an activator, easy collapse of a pore structure, low graphitization degree and the like in a traditional activation method.

The invention belongs to the field of clean utilization of coal, and particularly discloses an electric field enhanced hydrothermal treatment method and system for high-alkali coal, and the method specifically comprises the following steps: mixing high-alkali coal to be treated with water to form coal slurry; performing hydro-thermal treatment on the coal slurry and applying a directional electric field at the same time, so that a water-soluble alkali metal compound of the high-alkali coal to be treated is dissolved and ionized to generate alkaline cations, and the alkaline cations are directionally migrated to a cathode under the action of a direct-current electric field and further separated from a coal matrix; and carrying out solid-liquid separation on the coal slurry subjected to hydrothermal treatment, and drying to obtain the low-alkali coal. According to the method, water-soluble alkali metal compounds in coal can be ionized, alkaline cations are directionally migrated to a cathode under the action of a direct-current electric field so as to be separated from a coal matrix, meanwhile, water molecules and organic matters in the coal are polarized through an alternating electric field, the porosity of the coal matrix is increased, alkali metal is promoted to be separated out, and the coal yield is increased. Therefore, the alkali metal in the high-alkali coal is efficiently removed under the condition that no chemical agent needs to be added.

The invention relates to a copper bar extrusion forming device and an extrusion forming process, the copper bar extrusion forming device comprises an extrusion main machine, a heating device, a mold assembly, a feeding mechanism, a control system and an auxiliary device, the heating device is used for preheating a copper material, and the mold assembly comprises an extrusion mold and a cooling mold; the copper bar extrusion forming device is used for achieving extrusion forming and cooling forming of a copper bar, the control system is used for automatically controlling the temperature, pressure and displacement in the extrusion process, and based on the copper bar extrusion forming device, the copper bar extrusion forming process comprises the steps of copper material preparation, heating pretreatment, feeding and extrusion, cooling forming, material receiving and detection, continuous production and the like. Through cooperation of the device and the technology, continuous and high-precision forming of the copper bar is achieved, the copper bar forming device has the advantages of being high in forming precision, production efficiency, adaptability and automation degree and the like, manual operation errors are effectively reduced, and the consistency and quality stability of copper bar products are improved.

The application provides a crushing and recycling system and method for decommissioned wind power blades, the system comprising a cutting and removing device, a heat treatment kiln, a coarse crusher, a fine crusher, a sorting device, a pulverizer, a screening device and a conveying system, and the method comprising the steps of removing metal parts, cutting, heat treatment, coarse crushing, fine crushing, sorting, pulverizing, screening and resource utilization. The crushing and recycling system and method for decommissioned wind power blades can realize efficient crushing and recycling of decommissioned blades, and through heat pretreatment of the blades, the strength of the blade material is significantly reduced, thereby greatly reducing the difficulty and energy consumption of crushing, and solving the key problem of blade recycling and utilization.

The invention discloses a composite calcium-based heat storage material with a stepped hole structure as well as a preparation method and application of the composite calcium-based heat storage material, and belongs to the technical field of energy storage materials. The particle is prepared from a precursor containing calcium hydroxide, a micron-sized microcrystalline cellulose pore-forming agent and an Al, Fe, Mn, Ce and Zr multi-element doping agent through hydrothermal pretreatment, extrusion-rolling forming, microwave-assisted calcination, high-temperature calcination and carbonation treatment. The particle has a nano-micron stepped hole structure, and through the synergistic effect of multi-element doping and the hole structure, the solar spectrum absorptivity (gt; 85%), cycling stability (25 times of cycling conversion rate attenuation lt; 2%), reaction rate and mechanical strength, is suitable for an 800 DEG C high-temperature solar energy direct-driven heat storage system, and has the advantages of cheap raw materials, greenness and environmental protection, and good application prospect.

The invention provides a wafer defect detection method and system and a medium, and the method comprises the steps: placing a to-be-detected wafer at a detection position, and carrying out the thermal pretreatment of the to-be-detected wafer through a pretreatment light source, so as to enable the temperature of the to-be-detected wafer to reach a preset detection temperature interval; when the temperature of the to-be-detected wafer is in a preset detection temperature interval, the detection light source is controlled to emit a penetrating light beam, and the penetrating light beam enters from the first surface of the to-be-detected wafer, penetrates through the internal structure of the to-be-detected wafer and exits from the second surface of the to-be-detected wafer; the detection image formed by the emitted penetrating light beam is collected, and the defect information of the to-be-detected wafer is identified based on the detection image, and by applying the embodiment of the invention, the effective capture of the internal structure defect of the wafer can be realized on the basis of protecting the structural integrity of the wafer.

The application provides a steel slag-clay composite material, a preparation method and application, and comprises the following steps: providing dried and crushed steel slag and clay respectively; mixing the steel slag with an alkaline activator, and carrying out closed wet heat pretreatment under the condition that the temperature is 50-80 DEG C and the relative humidity is 60-85%, to obtain activated steel slag powder; mixing the activated steel slag powder, the clay and water to obtain a slurry; and after the slurry is sequentially subjected to forming treatment and curing treatment, the steel slag-clay composite material is obtained. Moreover, the obtained steel slag-clay composite material is in a slurry state, is convenient for construction and forming, and is suitable for various engineering application scenarios such as grouting and pouring. In addition, the application consumes a large amount of steel slag and clay, realizes high-value utilization of the steel slag, reduces solid waste emission, does not need sintering in the preparation process, has low energy consumption, and conforms to the green low-carbon circular development concept. The obtained product has excellent performance and has significant market competitiveness.

This invention provides a continuous segmented hydrothermal liquefaction system and control method. The material storage and transportation module, alternating stirring module, hydrothermal liquefaction and water circulation module, and hydrothermal liquefaction product separation module are sequentially connected. A control module is connected to each of these modules. The material storage and transportation module stores materials and liquids separately, mixes them, and then heats them into a mixture. This invention achieves the migration of various impurities from the solid phase product to the liquid phase through a pretreatment device and a post-pretreatment material separation device, thereby reducing the absolute content of impurities in the hydrothermal liquefaction material. This achieves the goal of improving the quality of biomass pretreatment as required by low-temperature hydrothermal pretreatment, enabling two-stage hydrothermal liquefaction of various biomass raw materials and expanding the system's applicability.