164 results about "Hydrothermal carbonization" patented technology

A carbon capture and storage (CCS) material may be synthesized using a wide variety of feedstock from agricultural, forestry, and sanitary wastes. The feedstock is heated under a reaction medium. After adding a solution of an activating alkali metal compound to the feedstock, the feedstock and activating alkali metal compound are heated under flowing gases to form the CCS material. This CCS material may be used and regenerated multiple times, then used as a soil amendment.

The present application belongs to the technical field of cracking and dechlorination of chlorinated mixed plastics, and particularly relates to a preparation method of a red mud-based chlorinated mixed plastic pyrolysis composite dechlorination agent and a dechlorination method. First, the coffee grounds are converted into biochar through a hydrothermal carbonization reaction, and at the same time, the reducing gas released during the carbonization of the coffee grounds is used to reduce part of the hematite in the red mud to Fe3O4; then, through a high-temperature carbon thermal reaction, the residual hematite in the red mud is completely reduced to Fe3O4, and at the same time, the composite with the added CaO is realized, and finally, the composite dechlorination agent composed of the modified red mud, the biochar and the CaO is obtained. The dechlorination agent has a suitable specific surface area and an adjustable pore structure, can effectively fix HCl during the cracking of chlorinated mixed plastics, and can further obtain plastic pyrolysis oil with ultra-low chlorine content, and realize the high-value utilization of the red mud and coffee grounds solid waste.

The invention belongs to the technical field of electrode materials, and relates to coffee residue heat treatment doping-based super capacitor carbon and a preparation method and application thereof, coffee residue is used as a raw material, and after hydrothermal carbonization, staged gradient activation and ultrasonic-acid etching coupling treatment, the super capacitor carbon with a rich pore structure is prepared. According to the process, through precise matching of intrinsic characteristics of coffee grounds and process parameters, a hierarchical porous structure is constructed and is matched with an electron transport network formed by self-doping, so that the technical bottleneck that a traditional biomass carbon material is poor in electrical conductivity and difficult to achieve both ion diffusion efficiency is broken through; the super-capacitor carbon with extremely high specific surface area, excellent electricity storage performance and high energy density is finally obtained; a supercapacitor electrode prepared from the supercapacitor carbon has good charge-discharge performance, large specific capacitance, high energy density and good cycle efficiency; moreover, efficient recycling of the coffee grounds can be achieved, the environment-friendly requirement is met, the process is simple, cost is low, and application and popularization are easy.

The present invention relates to the technical field of municipal sludge and industrial sludge treatment methods. Disclosed is a hydrothermal carbonization-based method for comprehensively treating iron-containing sludge and straw, comprising the following steps: 1) crushing and sieving straw, primarily dehydrating iron-containing sludge, and adding a catalyst for catalytic wet oxidation treatment; 2) adding wet-oxidized iron-containing sludge and a crushed and sieved fiber to a raw material storage tank and adding a dehydrating agent for dehydration treatment; 3) preheating a raw material conveying tank and then feeding the material into a reactor for a hydrothermal carbonization reaction; 4) collecting the resulting biochar slurry to a collecting tank for cooling; and 5) adding an appropriate amount of pulverized coal to the material and then carrying out plate press dehydration, or directly carrying out plate press dehydration, the material being used as a solid fuel. The present invention integrates two techniques, i.e., anaerobic digestion and hydrothermal carbonization, for sludge treatment, and the process is optimized from material and energy balance perspectives, so that the solid fuel and biochar substances are generated while sludge reduction is realized; moreover, the operation cost of the process is reduced, and the generated hydrothermal carbon can be either returned to the field for use or be used as an additive to promote anaerobic digestion, and also exhibits magnetism and can be recycled.

The invention discloses a method for preparing high-performance carbon microspheres based on classification of waste cotton textiles, which comprises the following steps: aiming at the waste cotton textiles which are accumulated in the open air and have obvious aging difference, firstly carrying out mechanical opening and impurity removal and photocatalytic decontamination pretreatment, and then sorting the aging degree through a carbonyl sensitive fluorescent probe and laser irradiation, so as to obtain the high-performance carbon microspheres. The heavily aged hydrophobic fibers and the lightly and moderately aged hydrophilic fibers are obtained. Treating the lightly and moderately aged fibers with an ionic liquid repairing system, and then preparing regenerated high-strength fibers by adopting magnetic control liquid crystal spinning; the heavily aged fiber is subjected to catalyst-free hydrothermal carbonization and gradient KOH activation pore expansion, and the graded pore carbon microspheres are prepared. According to the method, different aged fibers are accurately utilized, the performance of regenerated products is improved, pollution is reduced, and the resource utilization rate and additional value of the waste cotton textiles are increased.

According to the wet garbage treatment system provided by the utility model, a hydrothermal carbonization method and a microwave carbonization method are combined, so that the stable quality of a product is ensured, and meanwhile, generated harmful gases are reduced. A material outlet of the sorting device is connected with a material inlet of the material particle preparation device, a material outlet of the material particle preparation device is connected with a material inlet of the drying device, a material outlet of the drying device is connected with a material inlet of the hydrothermal carbonization device, and a material outlet of the hydrothermal carbonization device is connected with a material inlet of the microwave carbonization device. A material outlet of the microwave carbonization device is connected with a material inlet of the carbon block preparation device; a waste gas outlet of the drying device and a waste gas outlet of the microwave carbonization device are connected with the hydrothermal carbonization device; a waste gas outlet of the hydrothermal carbonization device is connected with the waste gas treatment device; a waste liquid outlet of the material particle preparation device is connected with the waste liquid treatment device.

[Problem] To provide a method for producing an oxygen reduction reaction catalyst having relatively superior characteristics not only under alkaline conditions but also under neutral and acidic conditions, and to provide an oxygen reduction reaction catalyst. [Solution] The method comprises: a preliminary carbonization treatment step for obtaining rice husk biochar by putting a raw material containing rice husks into a solution containing iron and sulfuric acid, and performing hydrothermal carbonization treatment; a heat treatment step for mixing the rice husk biochar obtained in the preliminary carbonization treatment step with sodium chloride and urea, and then heating the mixture for heat treatment in a nitrogen atmosphere; and a neutralization step for obtaining an oxygen reduction reaction catalyst by subjecting the product obtained in the heat treatment step to acid treatment for neutralization.

The application discloses a bimetallic doped hierarchical porous carbon catalyst and a preparation method and application thereof. The bimetallic doped hierarchical porous carbon catalyst is prepared from two transition metal salts and specific biomass powder as raw materials through 160-180 DEG C hydrothermal carbonization and 200-500 DEG C calcination. The catalyst has simple components, is cheap, and has a simple preparation process. The catalyst can efficiently catalyze synthesis of 2,5-furan dicarboxylic acid from 5-hydroxymethylfurfural under mild conditions. The target product has high yield and simple separation, and has a good industrial application prospect.

The invention discloses a modified activated carbon adsorption material with carboxyl functionalization and grading holes and a preparation method of the modified activated carbon adsorption material, and belongs to the technical field of adsorption materials. A biomass carbon raw material is subjected to hydrothermal carbonization and then mixed with KOH for activation, a solid-phase material is collected, dried and then mixed with HNO3, the mixture is heated in a water bath, the modified activated carbon adsorption material with carboxyl functionalization and graded pores is obtained, introduction of oxygen-containing functional groups and coordinated regulation of a pore structure are achieved, and the adsorption efficiency is improved. A hierarchical pore channel system and a polar surface are formed, so that the physical adsorption and chemical fixation capabilities of the modified activated carbon material on formaldehyde molecules are greatly improved. The specific surface area of the modified activated carbon adsorption material provided by the invention can reach 1454.8 m < 2 > / g, and the pore volume can reach 0.86 cm < 3 > / g; under a dynamic condition, an efficient adsorption state can be kept for a long time, and the saturated adsorption capacity can reach 650mu g / g.

The application discloses a method for preparing activated carbon precursor by removing biomass ash through wood vinegar and hydrothermal carbonization. Biomass raw materials are subjected to hydrothermal carbonization in a wood vinegar liquid medium to obtain biomass-based activated carbon precursor. The application innovatively utilizes the effective organic acid components in the acidic wood vinegar and combines hydrothermal carbonization to avoid the use of strong acid and strong base and pollution caused in the washing process. The method is easy to realize industrial popularization and application and is environment-friendly without significantly increasing the process cost. In addition, the method fully utilizes the acidic liquid byproduct, wood vinegar, in the process of preparing biochar through biomass pyrolysis, and realizes high-value comprehensive utilization of the biomass pyrolysis product on the basis of preparing the biomass-based activated carbon precursor.

The invention relates to the technical field of environmental functional material preparation, in particular to magnetic ferro-aluminum loaded modified sludge hydrothermal carbon as well as a preparation method and application thereof, and the sludge hydrothermal carbon prepared by a hydrothermal carbonization technology is a porous carbonaceous carrier with high specific surface area and rich oxygen-containing functional groups. A product obtained from the sludge hydrothermal carbon, an aluminum precursor, ferrous salt and ferric salt through an impregnation precipitation method is porous sludge carbon loaded aluminum iron oxide (mainly Fe3O4), and efficient chemical adsorption of fluorine ions is achieved through rich acidic functional groups and metal oxide active sites on the surface of the product. Adsorption mainly depends on complexation, exchange and surface combination of phases such as Al (OH) 3 and fluorine ions, and the magnetic ferro-aluminum loaded modified sludge hydrothermal carbon can be rapidly recycled through an external magnetic field after adsorption, so that secondary pollution is avoided, and therefore, the magnetic ferro-aluminum loaded modified sludge hydrothermal carbon has the dual advantages of efficient fluorine removal and magnetic recovery.

The application discloses a method for preparing clean energy by catalyzing sludge denitrification and desulfurization by using sludge ash, which comprises the following steps: S1, drying the first sludge and then placing it in a muffle furnace for combustion to obtain sludge ash; S2, adding the second sludge, the sludge ash and water into a reaction kettle in proportion to perform hydrothermal carbonization, collecting a solid product and obtaining hydrothermal carbon after drying. The application realizes efficient sludge denitrification and desulfurization by using sludge combustion waste, sludge ash to catalyze sludge hydrothermal carbonization. The hydrothermal carbon after denitrification and desulfurization is used as fuel or auxiliary fuel, which can relatively reduce the emission of nitrogen and sulfur compounds. Meanwhile, the waste reuse of sludge ash is realized by using the sludge ash as a catalyst. Compared with metal and metal compounds, molecular sieves, acids and other catalysts, the sludge ash has a wide source of raw materials and low cost.

The application provides a system and method for coupling new energy water electrolysis hydrogen production and solid waste resources, and the system comprises: a wind power generation unit, comprising an output end for supplying power to the outside; a hydrothermal carbonization unit connected with the output end of the wind power generation unit and comprising a first biochar unit and a first carbonization chamber for hydrothermal carbonization of biomass; a drying unit connected with the output end of the wind power generation unit and connected with the first biochar unit; a dry distillation carbonization unit connected with the output end of the wind power generation unit and comprising a tar collection unit, a second biochar unit, a pyrolysis gas collection unit and a second carbonization chamber for dry distillation carbonization of biomass; a water electrolysis hydrogen production unit connected with the output end of the wind power generation unit and comprising an electrolytic tank; and a methane preparation unit connected with the water electrolysis hydrogen production unit, the pyrolysis gas collection unit and the second biochar unit.

The application belongs to the technical field of organic waste treatment, and discloses a device and method for strengthening hydrothermal carbonization of organic waste by coupling with wood ash and granulation, which utilizes a vibration fluidization device to perform vibration fluidization on the organic waste, utilizes three-layer spiral blade paddles to perform multi-stage cutting and stirring on the organic waste, and realizes multi-stage mechanical granulation of the organic waste under the joint action of the two, destroys and modifies the macrostructure of the organic waste, and changes the organic waste into uniform small-particle organic waste; subsequently, alkali wood ash is utilized to promote alkaline deconstruction of the biomass molecules of the uniform small-particle organic waste, destroy and modify the microstructure of the organic waste, and improve hydrothermal activity.

The application belongs to the technical fields of nanobiomaterials and cosmetic efficacy materials, and discloses a centella asiatica-derived carbon dot, a preparation method thereof and application thereof in cosmetics. The preparation method of the centella asiatica-derived carbon dot comprises the following steps: step 1, using centella asiatica extract as a carbon source and urea as a nitrogen source, performing a hydrothermal carbonization reaction to obtain a reaction solution; and step 2, performing ultrafiltration purification and freeze-drying on the reaction solution obtained in step 1 to obtain the centella asiatica-derived carbon dot. The centella asiatica-derived carbon dot can penetrate the stratum corneum to achieve deep delivery to the dermis and form protection to the collagen matrix.

The present application relates to the technical field of environmental functional material preparation, and particularly relates to an aluminum-loaded modified sludge hydrothermal carbon material, a preparation process and application thereof, and comprises the following steps: mixing dry sludge with deionized water and then performing a hydrothermal reaction to obtain sludge hydrothermal carbon; dissolving an aluminum precursor in deionized water to obtain an aluminum precursor solution, and then fully mixing the aluminum precursor solution with the sludge hydrothermal carbon to obtain a mixed solution; adjusting the pH of the mixed solution to 9-10, and then performing suction filtration, rinsing, drying and crushing after stirring and standing overnight to obtain a pretreated material; and then calcining the pretreated material in a nitrogen atmosphere to obtain aluminum-loaded sludge hydrothermal carbon. The present application converts sludge into a porous hydrothermal carbon carrier by using a hydrothermal carbonization technology, and stably loads aluminum compounds by using a low-temperature impregnation precipitation method, thereby significantly reducing the modification process cost, and simultaneously having the dual advantages of sludge resource utilization and efficient fluorine removal, and being suitable for fluorine-containing wastewater treatment under wide water quality conditions.

The invention discloses a method for preparing a biostimulant from a hydrothermal carbonization solution. The method comprises the following steps: hydrothermal carbonization of biomass wastes, dilution of the hydrothermal carbonization solution, domestication of activated sludge and enhancement of synergistic functional bacteria, and aerobic treatment. The invention also discloses an application effect of the hydrothermal carbonization liquid. By means of the method, substances which are toxic to crop growth in the hydrothermal carbonization liquid can be effectively removed, a biostimulant functional product which has a promoting effect on crop growth is prepared, the technological process is green and environmentally friendly, the raw material adaptability is wide, the technology is stable, and good application prospects are achieved.

The invention discloses a modified moso bamboo derived porous carbon electrode material and a preparation method and application thereof, and belongs to the technical field of supercapacitors, the preparation method of the modified moso bamboo derived porous carbon electrode material comprises the following steps: moso bamboo powder and MoS2 are mixed, an iron salt solution is added for hydrothermal carbonization, and hydrothermal carbon is obtained; activating the hydrothermal carbon with alkali to obtain an activated product; and purifying the activated product to obtain the modified moso bamboo derived porous carbon electrode material. The moso bamboo powder is used as a biomass raw material, through the synergistic effect of MoS2 and ferric salt, carbon skeleton pore structure optimization, MoS2 defect regulation and Fe-based pseudocapacitance center introduction are synchronously achieved, and therefore the electrode material which is high in specific surface area, rich in active site and excellent in electrochemical performance can be prepared.

The invention discloses an orange peel carbon surface trypsin imprinted polymer as well as a preparation method and application thereof, and belongs to the technical field of trypsin extraction and separation materials. The preparation method comprises the following steps: by taking waste orange peel as a carbon source, preparing magnetic orange peel carbon as a carrier through hydrothermal carbonization and high-temperature calcination; further, trypsin is used as a template, caffeic acid and levodopa are used as bifunctional monomers, and the trypsin imprinted polymer is successfully prepared through a mild and green one-step synthesis method. Wherein the rigid molecular structure and the flexible molecular structure of the bifunctional monomer are synergistically complementary, so that the imprinted polymer is endowed with excellent trypsin adsorption performance. Meanwhile, the imprinted polymer can be quickly separated by an external magnetic field due to the good magnetic responsiveness of the carrier, so that the operation process is greatly simplified. The finally obtained trypsin imprinted polymer is high in recognition specificity, high in separation efficiency, simple and convenient to operate and good in stability, and has a wide application prospect.

The present application relates to a kind of phosphorus bacteria reinforced sludge hydrothermal carbonization soil heavy metal remediation matrix and preparation method and application, wherein soil heavy metal remediation matrix is treated by hydrothermal carbonization to phosphorus-rich municipal sludge, and calcium chloride is added to obtain sludge hydrothermal carbonization product, acid-tolerant and heavy metal-tolerant phosphorus bacteria are enriched and screened from pyrite mountain soil, and it is loaded on the surface of rice husk modified by NaOH to obtain phosphorus bacteria-rice husk composite material, sludge hydrothermal carbonization product and phosphorus bacteria-rice husk composite material are mixed according to certain proportion, and soil heavy metal remediation matrix is obtained after open stacking for a certain time.Compared with prior art, the matrix can release a large amount of phosphate into the soil, which can form stable minerals with soil heavy metals to immobilize heavy metals, and on the other hand, it can provide sufficient phosphorus source for overlying remediation plants, promote plant growth, and ultimately realize ecological greening of soil.

The invention relates to the technical field of hydrothermal carbonization equipment, in particular to photovoltaic electricity auxiliary heating hydrothermal carbon intelligent reaction equipment and a use method, and is provided with a photovoltaic-reaction cooperation system, a wood fiber special reaction system, a three-element precise control system and a multi-redundancy pressure relief protection system. The equipment integrates photovoltaic power supply and heat energy recovery, and realizes efficient utilization of solar energy in a mode of'preferential heating + residual electricity charging 'and segmented energy scheduling; a gradient wear-resistant reaction kettle and an auxiliary shear knife structure are adopted, and the fiber winding rate is reduced to 1% or below in cooperation with DES injection amount and shear knife rotating speed regulation and control; a three-dimensional temperature field is constructed through a distributed optical fiber sensor, and high-precision temperature control of the reaction kettle is realized in combination with a miniature cooling nozzle; the intelligent terminal is firstly started according to the initial parameters and then dynamically adjusts the process parameters according to the raw material components, so that the adaptability and stability of the system are improved. The method can be used for efficiently and stably preparing the hydrothermal carbon, and is suitable for the fields of agricultural biomass resource utilization and soil improvement.

The utility model provides an integrated system which comprises a combustion system and a power generation system. The combustion system comprises: a unit A for catalytic hydrothermal carbonization; a unit B located downstream of the unit A and used for combustion; the unit C is positioned at the downstream of the unit B and is used for preparing the additive in the unit A; and a transport unit D for transporting the additive produced by the unit C to the unit A. According to the functional layout of in-situ production of the fly ash zeolite-based catalytic material, a nanotechnology approach for thermochemical catalytic synergism in a biomass thermoelectric conversion process is created, and value-added circulation of regenerating solid waste into the catalytic material in situ and using the catalytic material in situ is realized; an oxidation / reduction high-efficiency chemical looping loop for in-situ low-cost production and in-situ high-value application of the solid metal oxide catalyst is constructed; in addition, the fly ash zeolite-based solid acid catalyst with the biphase catalysis function is designed into a single material, so that the complexity of the industrial process is simplified, and the overall cost of the system is reduced.

The present invention is for solving the problems of existing hydrothermal carbonization processes, and relates to a method for producing a solid fuel with reduced odor using an energy-saving hydrothe

The application is a preparation method and application of a metal atom modified folate derived hard carbon material. The method uses folate and soluble metal salt as raw materials to prepare a metal atom modified hard carbon material through a hydrothermal-carbonization method; that is, by adjusting the temperature and solvent ratio of the hydrothermal reaction, using the chelation of the carboxyl functional group of folate and metal ions, controlling the content of metal atoms and the microstructure of the product, and based on the catalytic effect of metal atoms, reducing the carbonization temperature, reducing surface defects, improving the interface reaction kinetics, and thus improving the rate performance of the hard carbon. The method is simple, the raw materials are simple, it is environmentally friendly, the process has good repeatability, the product quality is stable, and the rate performance of the hard carbon is: 140 mAh g ‑1 of specific capacity is realized at a current density of 1 A g ‑1 .

The utility model provides a high-temperature and high-pressure carbonization device, which relates to the technical field of biochar preparation, and comprises a high-pressure reaction kettle body, a stirring assembly, a mounting rack, a weighing device, a mixing barrel, a biomass conveying assembly, a basic nutrient substance conveying assembly, a booster pump, a material injection pipe and a medium and trace nutrient substance quantitative adding assembly, according to the device, basic nutrient substances and biomass can be efficiently mixed before biochar is prepared through high-pressure hydrothermal carbonization, then the basic nutrient substances and the biomass are uniformly mixed so as to improve the nutrient content in the follow-up biochar, and meanwhile, part of medium and trace nutrient substances which mutually react with the basic nutrient substances are added in a lagging manner; therefore, the medium and trace nutrient substances cannot react in advance to lose efficacy, and the prepared biochar can be directly used as a slow release fertilizer to carry out agricultural activities such as soil improvement and the like.

The present invention relates to the technical field of solid waste resource utilization and environmental engineering, and in particular to a method for recovering phosphorus based on cyclic hydrothermal carbonization of wetland plants, comprising the following steps: (1) washing, drying, then crushing and sieving harvested wetland plants; (2) taking biomass powder for hydrothermal carbonization treatment to obtain a hydrothermal carbonization product; (3) performing solid-liquid separation for the obtained carbonization product; (4) continuing to use the obtained carbonization liquid as a liquid-phase medium and mixing with the biomass raw material for multi-stage cyclic hydrothermal carbonization; after the cyclic carbonization is ended, conducting solid-liquid separation to obtain phosphorus-rich carbonization liquid and cyclic hydrochar; and (5) adjusting the pH of the phosphorus-rich carbonization liquid to form and recover phosphorus crystal precipitates. The present invention effectively recovers phosphorus from the wetland plants, simultaneously realizes the resource utilization of the hydrothermal carbonization product of the wetland plants, reduces the impact of hydrothermal carbonization of biomass waste on environment, and effectively solves the problems of treatment and disposal of wetland plant residues.

The invention discloses a silicon-carbon material with a low specific surface area and a preparation method and application thereof, and belongs to the technical field of negative electrode materials. The preparation method of the silicon-carbon material with the low specific surface area comprises the following steps: mixing a first carbon source and a silicon-containing nano material, performing preliminary carbonization, and then crushing to obtain a micron silicon-carbon material; and mixing the micron silicon-carbon material with a second carbon source, and performing hydrothermal carbonization to obtain the silicon-carbon material with low specific surface area. Through preliminary carbonization, on one hand, silicon-containing nano material particles can be bonded to form micron particles and finish first-layer coating, and the specific surface area of the material is preliminarily reduced; through hydrothermal carbonization, the second carbon source is filled into surface pores of the micron silicon carbon material to form a compact structure, so that the silicon carbon material with a low specific surface area is obtained; the silicon-carbon material is small in volume expansion and good in stability.

The invention belongs to the technical field of organic solid waste resource utilization, and discloses a livestock and poultry manure and traditional Chinese medicine residue two-stage hydrothermal conversion method which comprises the following steps: synergistic pretreatment: mixing and homogenizing wet livestock and poultry manure and dried and crushed traditional Chinese medicine residues to obtain homogenized slurry; carrying out first-stage hydrothermal carbonization reaction, namely reacting the homogeneous slurry at 180-220 DEG C, and carrying out solid-liquid separation on a reaction product to obtain solid hydrothermal carbon and a first-stage liquid-phase product; and a second-stage catalytic hydrothermal gasification reaction: carrying out a reaction on the first-stage liquid-phase product and a catalyst under the conditions of 300-350 DEG C and 10-20 MPa, collecting the generated gas, and purifying to obtain the hydrogen-rich fuel gas. According to the method, the hydrothermal carbon and the hydrogen-rich fuel gas for soil remediation are produced through characteristic complementation of the two raw materials and two-stage hydrothermal reaction cooperative treatment, the hydrogen production rate is remarkably increased, and high-value utilization of waste is achieved.

The invention relates to a preparation method and application of polygonum multiflorum biochar. The preparation method comprises the following steps: washing polygonum multiflorum root blocks, slicing, drying and crushing into powder; putting the powder into a reaction kettle, adding water and a catalyst, and carbonizing to obtain carbonized primary pulp; and filtering the primary pulp, washing with water to be clear after acid pickling, drying a filter cake, crushing, and sieving with a 200-mesh sieve to obtain the product. The polygonum multiflorum biochar prepared by the method disclosed by the invention can be used as a preparation raw material to be applied to cosmetics, especially eyebrow pencils and eyebrow dye cream. According to the preparation method, a hydrothermal carbonization process is adopted, and functional components are reserved while low-temperature carbonization is performed. Raw material treatment stipulates the powder particle size range to increase the specific surface area and facilitate uniform reaction; a good reaction environment is created by reasonably controlling the mass ratio of polygonum multiflorum powder to water to the catalyst; a proper catalyst is selected to promote reaction; proper carbonization temperature and time are set, eyebrow nourishing substances are reserved, a multi-stage pore structure is formed through accurate control, and adsorption and functional component load release capacity is enhanced.