70 results about "Heat pretreatment" patented technology

The invention discloses a method for recovering phosphorus through anaerobic digestion by adding sludge-based biochar, which comprises the following steps of: firing dewatered sludge serving as a raw material under an anaerobic condition to obtain carbonized carbon; or firing under an aerobic condition to obtain pyrolytic carbon, adding any sludge-based biochar obtained by firing into the hydrothermal dewatered sludge, and carrying out anaerobic digestion on the hydrothermal dewatered sludge; the hydrothermal dewatered sludge is obtained by performing hydrothermal pretreatment on dewatered sludge; and carrying out phosphorus recovery on the sludge-based biochar subjected to anaerobic digestion by utilizing a magnetic separation method. Compared with the traditional method for recovering the phosphate fertilizer from the sludge incineration ash, the recovery method disclosed by the invention is green and pollution-free, belongs to a sludge treatment mode of treating waste with waste, realizes effective combination of a heat treatment mode and a biological treatment mode, and has a good practical application value. Moreover, the prepared sludge-based biochar has the property of magnetism, so that the recovery rate of the subsequent blue iron ore is increased, and the separation difficulty and economic investment are reduced.

The invention discloses a PVA / urea / CC lignocellulose composite mulching film as well as a preparation method and application thereof, and belongs to the technical field of agricultural mulching films. The composite mulching film disclosed by the invention is obtained by adding PVA (Polyvinyl Alcohol) into a corncob lignocellulose HTP-CC dispersion liquid subjected to hydrothermal pretreatment, then sequentially adding glutaraldehyde, urea and glycerol and carrying out cross-linking reaction. The mechanical property of the PUCH mulching film prepared by the invention meets the GB / T35795-2017 standard, and the PUCH mulching film has excellent water vapor barrier property, ultraviolet shielding property, urea controlled release property, heat insulation property and biodegradability. The characteristics not only can promote crop growth, but also can reduce agricultural environmental pollution. Therefore, the PUCH mulching film shows huge potential to replace the traditional plastic mulching film, and has important application prospects in agricultural planting.

The invention belongs to the technical field of biological fermentation hydrogen production. The invention provides a method for producing hydrogen by dark fermentation of pericarp biomass, which comprises the following steps: drying pericarp, crushing, and sieving to obtain powdery pericarp particles; performing acid heat pretreatment on the powdery fruit peel particles to obtain fruit peel pretreatment liquid; and inoculating the clostridium butyricum solution into the pericarp pretreatment liquid, and carrying out dark fermentation under an anaerobic condition to obtain a fermentation gas containing hydrogen. According to the method, the pericarp byproducts are used for dark fermentation for hydrogen production, so that high-value recycling utilization of agricultural wastes is realized; lignin in the pericarp is effectively removed through acid heat pretreatment, the availability of cellulose and hemicellulose is remarkably improved, conditions such as acid concentration, temperature and time are optimized, the inhibition effect of by-products is avoided, and the hydrogen production efficiency is remarkably improved; moreover, the method has the advantages of good stability and high repeatability, and provides a new technical approach for efficient production of clean energy.

The invention discloses a lignocellulose biomass-based hard carbon negative electrode material as well as a preparation method and application thereof. The method comprises the following steps: carrying out hydrothermal pretreatment on lignocellulose biomass by using low-corrosivity maleic acid, and regulating and controlling the composition of the lignocellulose biomass, the maleic acid and the lignocellulose to obtain a precursor rich in lignin and cellulose; in the pyrolysis and carbonization process, the thermal stability of the precursor is improved, and the lignin can more effectively inhibit the rapid concentrated pyrolysis of cellulose, so that the rearrangement of pyrolysis products is weakened. The method is beneficial for preventing overgrowth of hard carbon graphite microcrystals during high-temperature carbonization, so that the hard carbon material with large interlayer spacing and abundant small-size closed pores is prepared. The hard carbon material shows high specific capacity and excellent rate capability when being applied to the negative electrode of the sodium-ion battery. Meanwhile, xylose and furfural generated by decomposition of hemicellulose in a liquid phase can be effectively collected, and full-component utilization of biomass is achieved. The requirements of green production are met, and industrial application is easy to realize.

The invention discloses a method for preparing a denitrification composite carbon source by using kitchen waste, and relates to the technical field of kitchen waste resourceful treatment, and the method comprises the following specific steps: pretreatment, oil removal, hydrolytic acidification, solid-liquid separation, biochar preparation and carbon source compounding. Wherein the yield of volatile fatty acid (VFAs) can be remarkably improved by performing damp-heat pretreatment on fermentation, the biochar provides an adsorption carrier and a microorganism attachment site for the VFAs, the release period of a carbon source is prolonged, and a carbon source-carrier-catalyst ternary system is formed by the biochar, the VFAs and divalent metal cations, so that the denitrification rate is improved. The cost of the denitrification composite carbon source is obviously lower than that of a traditional commercial carbon source, and deep resource utilization of the kitchen waste is achieved.

The invention belongs to the technical field of high-temperature-resistant containers, and provides a quartz crucible preparation method and a quartz crucible. The preparation method of the quartz crucible comprises the following steps: preparing the matrix; the base body is subjected to heating pretreatment; coating the inner wall of the substrate with a barium solution; sintering to form a barium silicate prefabricated layer on the inner wall of the substrate; and barium carbonate powder is scattered on the barium silicate prefabricated layer to form a barium silicate protective layer. According to the quartz crucible prepared by the quartz crucible preparation method provided by the invention, the barium silicate protective layer in the quartz crucible can effectively prevent a product to be prepared from corroding the quartz crucible.

The invention discloses a method for strengthening a co-pyrolysis synergistic effect based on hydrothermal-forming pretreatment. The method comprises the following steps: 1, grinding and screening raw materials, namely oil-rich coal and lignin, and then drying; 2, uniformly mixing with a CaO catalyst, and carrying out hydrothermal pretreatment to obtain a mixture to be formed; 3, mixing the to-be-formed mixture with deionized water, and carrying out double-roller forming treatment to obtain a formed substance; 4, carrying out a co-pyrolysis reaction on the molded product to generate solid semi-coke and a pyrolysis oil gas product; and 5, condensing and separating the pyrolysis oil-gas product to obtain pyrolysis tar and pyrolysis gas, and collecting solid semi-coke. According to the invention, the CaO catalyst, the hydrothermal pretreatment and the double-roller forming are utilized to synergistically improve the yield and the quality of the co-pyrolysis product of the oil-rich coal and the lignin, so that the co-pyrolysis synergistic effect of the oil-rich coal and the lignin can be enhanced to improve the yield of high-value components, and the emission of greenhouse gases and pollutants in the pyrolysis process can be reduced; and high-value utilization of oil-rich coal and waste lignin resources is realized.

The application provides a waste lithium battery black powder pretreatment method, which comprises the following steps: (a) emptying: the waste lithium battery black powder is loaded into a pretreatment reactor and nitrogen or inert gas is introduced to perform emptying; (b) preheating: the waste lithium battery black powder and non-oxidizing carrier gas are preheated respectively; (c) pretreatment: the preheated carrier gas is continuously introduced into the pretreatment reactor to be mixed with the preheated battery black powder and heated to be warmed up, and the battery black powder is kept warm for a certain time t; (d) cooling: the heating device of the pretreatment reactor is closed and the preheated carrier gas is stopped, and then nitrogen or inert gas is continuously introduced into the pretreatment reactor, and the battery black powder in the pretreatment reactor is gradually cooled; (e) unloading: when the battery black powder in the pretreatment reactor is cooled to less than 50 DEG C, the pretreated battery black powder is obtained by unloading. The method has the advantages of simple and controllable process, high defluorination rate, high efficiency, short process and low cost.

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 application discloses a preparation method of a medium-nitrogen-doped metal monatomic graphite felt. The method comprises the following steps: cleaning and heat pretreating the graphite felt; preparing a Tris buffer solution, adding dopamine hydrochloride into the Tris buffer solution, adjusting the pH value, and obtaining a mixed solution; placing the heat pretreated graphite felt into the mixed solution, and passing oxygen-containing gas to form a polydopamine layer on the heat pretreated graphite felt; placing the obtained polydopamine graphite felt into a metal salt solution to react, forming a polydopamine graphite felt doped with metal; and performing calcination in a nitrogen atmosphere to obtain a nitrogen-doped metal monatomic graphite felt. The polydopamine is used as a complexing agent, and the modified metal is fixed on the graphite felt in a complexing manner, so that the stability of the metal catalyst loading is greatly improved, and the energy efficiency of a flow battery is improved.

The invention discloses a method for preparing a bamboo-based hard carbon material by using an ethanol solvent thermal pretreatment process, the bamboo-based hard carbon material and application of the bamboo-based hard carbon material, the method comprises the following steps: step 1, pouring dry bamboo pulp powder into an ethanol solution, and uniformly stirring to obtain a mixed suspension; step 2, transferring the mixed suspension into a hydrothermal reaction kettle, putting the hydrothermal reaction kettle into a drying oven, keeping the temperature at 60-100 DEG C for 8-24 hours, cooling to room temperature after the reaction is finished, and sequentially drying and grinding to obtain a pretreated bamboo fiber precursor; and step 3, placing the pretreated bamboo fiber precursor in a tubular furnace, heating from room temperature to 600-1200 DEG C at a heating rate of 2-10 DEG C / min in a nitrogen atmosphere, and keeping the temperature for 1-4 hours to obtain the bamboo-based hard carbon material. The method is short in technological process and low in energy consumption, and the prepared bamboo-based hard carbon material has large interlayer spacing and specific surface area and can endow the sodium ion battery with excellent electrochemical performance.

The invention relates to a molecular beam epitaxy preparation method for epitaxy of high-quality AlN on a Si substrate and an AlN epitaxial wafer, and the preparation method comprises the steps: S1, obtaining a substrate, carrying out infrared lamp baking and heating pretreatment on the substrate, and then carrying out high-temperature deoxidation to obtain a pretreated substrate; s2, pre-paving an Al layer on the pretreated substrate by adopting a molecular beam epitaxy method; s3, growing an AlN epitaxial layer on the pre-paved Al layer by adopting a molecular beam epitaxy method; and S4, continuously introducing nitrogen plasma for post-treatment, and cooling to a wafer transfer temperature to obtain the epitaxial wafer. According to the technical scheme, the reaction between the substrate and N in the AlN layer can be inhibited through the pre-laid Al layer, the formation of amorphous particles is avoided, so that the morphology of the AlN is improved, meanwhile, the pre-laid Al layer not only relieves the lattice mismatch problem of the substrate material and the AlN, but also improves the Al atom mobility and promotes the two-dimensional growth for the subsequent growth of the AlN layer, and thus the quality of the AlN crystal is improved.

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 present invention relates to a method for producing an add-on part (10) of a motor vehicle, wherein the add-on part (10) comprises two structural parts (1, 2) which are fastened to one another, wherein the two structural parts (1, 2) are coated separately (S1) and / or painted separately (S2), wherein the two structural parts (1, 2) are thermally pretreated (S4) after coating (S1) and / or painting (S2), and wherein the two structural parts (1, 2) are fastened to one another by a folding process (S5) after the thermal pretreatment (S4).

The application discloses a system and method for enhancing biodegradable plastic composting degradation by mild alkali heat pretreatment, and belongs to the field of organic solid waste treatment and disposal. The method comprises the following steps: biodegradable plastics are crushed by a plastic crushing unit to reduce the size; pretreatment is performed in an alkali heat treatment unit and solid-liquid separation is performed; after being mixed with organic solid waste in a material mixing unit, controlled composting or natural composting is performed in a composting unit; a heat exchange unit is additionally arranged to recycle heat; and liquid phase treatment is performed after pretreatment in a liquid phase treatment unit. The method provided by the application can simply and quickly enhance the composting degradation performance of biodegradable plastics; when applied to controlled composting, the degradation and mineralization of biodegradable plastics can be accelerated; when applied to natural composting, the plastic residues can be reduced, the adverse effects of biodegradable plastics on composting can be reduced, the risk of secondary pollution can be reduced, and the composting can better meet the standards of maturity and harmlessness.

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 invention relates to the technical field of high polymer material processing, in particular to a preparation method of an insulating and fireproof high-tensile PET (polyethylene terephthalate) flame-retardant film for a battery module, which comprises the following steps: S1, weighing all components according to a preset proportion, and uniformly mixing to form a premixed modified material; s2, carrying out melt copolymerization reaction on the premixed modified material to form a modified PET copolymer; s3, the modified PET copolymer is melted and then subjected to tape casting processing, and a primary membrane material is prepared; s4, carrying out tension heating pretreatment; s5, carrying out synchronous longitudinal and transverse stretching treatment to obtain a high-strength flame-retardant film; s6, carrying out heat setting treatment; s7, the surface is coated with an electric insulation coating; and S8, static elimination and constant-tension rolling are conducted, and a finished product is obtained. According to the invention, the PET film with high tensile strength, dimensional stability and flame-retardant and insulating properties is prepared through synergistic modification and integrated processing technologies, and the defects of existing materials in the aspects of thermal stability and function coordination are overcome.

The application discloses a kind of waste incineration fly ash and lithium ore tailings collaborative processing method, steps include: waste incineration fly ash and lithium ore tailings are mixed, and mixed material is obtained;Mixed material is mixed with alkaline activator, and is alkaline activated;After alkaline activation, mixed liquid is hydrothermally reacted, solid-liquid separation, and pretreatment liquid and pretreatment residue are obtained, and pretreatment product is obtained after water washing of pretreatment residue;Shale or coal gangue, sludge and pretreatment product are mixed, water is added, sintered, and collaborative processing of waste incineration fly ash and lithium ore tailings is completed.The lithium ore tailings used in the method of the application is a kind of porous material, has greater specific surface area and more reasonable silicon-aluminum-calcium ratio, which is beneficial to accelerate alkaline activation, improve the efficiency of hydrothermal reaction, the process steps are simple, the processing time is short, efficient, convenient, energy-saving, through the comprehensive treatment mode of "alkaline activation+hydrothermal pretreatment+sintering solidification", finally realizes the dual goal of waste treatment with waste and efficient solidification of heavy metals.

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 belongs to the technical field of new materials, and discloses a hydrothermal preparation method and application of a tough cellulose membrane. A collaborative dispersion stage; and performing thermal pretreatment and forming to obtain the high-toughness nano cellulose membrane with a continuous network structure. The defibrating efficiency of the fibers is improved through thermal pretreatment. The fiber length and diameter distribution concentration ratio is improved, and the microfiber size uniformity is good. The thermal pretreatment process in the method effectively reduces the structural strength of the gel, shortens the suction filtration time to 1 / 3 of that of a traditional method, and reduces a lot of microcrack defects. The mechanical properties, namely toughness and fracture strain, of the cellulose membrane prepared through the method are remarkably improved.

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 thermal pretreatment device and method for tobacco sheet stem liquid wastewater, and the method comprises the steps: carrying out the thermal pretreatment of the stem liquid wastewater, collecting the spectral information of the stem liquid wastewater in the process in real time through a spectroscopy sensor, and carrying out the treatment of the collected spectral information, the concentrations of total organic matters, suspended particulate matters, proteins and humic acid in the stem liquid wastewater in the thermal pretreatment process are obtained, whether thermal pretreatment is completed or not is judged according to the concentration information of each substance, and then the thermal pretreatment time is controlled according to the judgment result. The wastewater treatment efficiency of a subsequent biological treatment unit can be effectively improved through thermal pretreatment, a monitoring index system is constructed by combining multiple spectroscopy sensors, the change of key substances and the progress of the treatment process in the thermal pretreatment process are quantified, the treatment flow is controlled accordingly, and the controllability and efficiency of thermal pretreatment are remarkably improved.