822results about How to "Realize high value utilization" patented technology

The invention discloses a wood fiber reinforced inflaming retarding foam material and a machining method thereof. The composite foam material is prepared from the following components in parts by weight: 40-95 parts of foaming flame-retarded resin, 0.1-8 parts of curing agent, 0.5-8 parts of surfactant, 1-50 parts of wood fiber and 0.5-10 parts of flexibilizer. The wood fiber is treated by using a coupling agent and then dried, and the coupling agent accounts for 0.15-0.5 percent of the mass of the wood fiber. A naturally expanded foaming method or die foaming method is adopted. The wood fiber reinforced inflaming retarding foam material can be widely applied to fields of insulation of building outer wall bodies, architectural ornament, traffic vehicles, water ships, aerospace, electromechanical equipment, industrial sound absorption, heat preservation and shock absorption and the like, and is a composite foaming material with actual application value.

The invention discloses a biomass-based grading porous carbon and a preparation method thereof. The method comprises the following steps of shearing and sieving the biomass raw materials to 20 to 80 meshes; adding the materials into a double-salt system water solution; performing stirring; performing low-temperature hydro-thermal method pre-carbonization treatment for 5 to 20h at 180 to 300 DEG C;performing washing and filtering to obtain a pre-carbonization product; then raising the temperature to 600 to 1000 DEG C in inert atmosphere; performing carbonization activation treatment for 0.5 to8h; performing acid washing, alkali washing or ultrasonic treatment on the obtained product; then washing the materials by water to the neutral state; performing drying to obtain the biomass-based grading porous carbon. The hydrothermal carbonization is performed during the pre-carbonization; the double-salt system is used as a salt template and a pre-hole-forming agent; the adverse conditions are provided for the subsequent carbonization activation for preparing the porous carbon; the obtained porous carbon has high specific surface area and the loose three-dimensional connection pore passage structures; high electrical conductivity and good capacitive characters are realized; the biomass-based grading porous carbon can be applied to supercapacitors as carbon electrodes.

The invention discloses a processing method and a process device of cellulose industrial biomass wastes, and the method comprises the following steps: feeding raw materials into a drying system continuously, supplying heat by high-temperature flue gas from the combustion of volatile matter precipitated in pyrolysis and carbonization so as to dry the raw materials; allowing the dried raw materials to enter a carbonization reactor for pyrolysis and carbonization, delivering the intermediate products of pyrolysis and carbonization to a riser reactor, preparing porous carbon-based adsorption functional material (namely active carbon), syngas (or called biomass gas), or steam under the action of an oxidative medium and an activator, or an oxidative medium and an gasifying agent, or an oxidative medium. The steam required by the system is prepared by the activated or gasified high-temperature gas-solid products through heat exchange, which can increase the energy recovery efficiency of the process; the process adopts a continuous running mode with complete self-heating, and realizes the high-value conversion of cellulose industrial biomass wastes.

The present invention discloses a method for extracting collagen and method for preparing collagen protein by using said collagen. Said method for extracting collagen includes the following steps: using Java tilapia skin as raw material, cutting said Java tilapia skin, adding n-hexane, defatting, using NaOH solution to remove heteroprotein, using acetic acid solution to extract collagen protein, concentrating and freeze-drying so as to obtain collagen. The method for preparing collagen protein by using extracted collagen includes the following steps: adding water to dissolve the collagen, then utilizing proteinase to make zymolysis, concentrating and spray-drying so as to obtain hydrolytic collagen protein.

The invention relates to a wood fiber reinforced flame retardant foam composite plate and a preparation method thereof. The external layer of the composite plate is a wood panel, and the foam core plate in the internal layer is a wood fiber reinforced phenol formaldehyde foam material or a melamine modified formaldehyde foam material. The wood fiber is treated by a coupling agent. The invention further relates to a manufacturing method of the plate. The wood panel is adhered to the external layer panel of the foam core plate. The plate can be manufactured by performing lamination thermal composition on the materials by using an adhesive, and also can be manufactured by directly foaming between fixed dual-layer panels. The foam core plate uses wood fiber reinforced phenol formaldehyde foam or melamine modified formaldehyde foam material. The flame retardant performance can accord with the specified standard. The foam core plate is flame retardant and small in smoke amount, generates no harmful gas, and meets requirement of environmental friendliness, so that the composite plate has excellent sound absorption and heat insulation properties. The fiber reinforced foam base material has an excellent mechanical property.

The invention discloses a method for preparing an iron oxide red hybridization pigment by means of clay minerals. According to the method, natural clay minerals are dispersed in water to form suspension liquid after being subjected to breaking, double rolling and ball milling, molysite and auxiliaries are then added, evenly dispersed and transferred into a hydrothermal reaction kettle, pH of the solution is controlled to be 0.5-4, reaction lasts for 5-60 h at the pressure of 2-8 MPa and the temperature of 160-300 DEG C, and programmed cooling is conducted at the rate of 10 DEG C/min to indoor temperature; the solid product is separated, washed, dried and smashed to generate the bright red hybridization pigment. Structural evolution and recombination are induced through hydrothermal reaction, reaction parameters are precisely controlled, exchange is conducted between Fe3+ and ions in clay minerals under the action of auxiliaries, in-situ formation of a crystalline phase is achieved, the novel silicon-aluminum iron oxide red hybridization pigment with bright color, high stability and uniform size is obtained, and the cost-effective red hybridization pigment is provided for multiple fields including coating, paint, ceramic and ink.

The invention discloses a high-efficiency clean resource utilization method for quadratic aluminum dust. The method comprises the following steps: performing low-temperature roasting treatment on quadratic aluminum dust, removing harmful elements such as nitrogen, carbon and fluorine, pulping, washing, desalting and dehydrating the quadratic aluminum dust, removing sodium salt, potassium salt andother impurity components, washing brine and evaporating and crystallizing by utilizing flue gas waste heat. The purified quadratic aluminum dust can serve as a raw material to be directly utilized, and after the quadratic aluminum dust is mechanically mixed with auxiliary materials (calcium-based, silicon-based and magnesium-based), an aluminum based inorganic material is prepared at a high temperature, and the sintering exhaust gas realizes up-to-standard discharge by virtue of dust removal and dry defluorinated purification. According to the technology in the invention, the quadratic aluminum dust can be safely, cleanly and efficiently treated and converted into the high-value aluminum based inorganic material to the greatest degree, and environmental-friendly treatment and high-value resource utilization of the quadratic aluminum dust can be realized.

The invention discloses a separation method of (waste) terylene-cotton blended fabrics. The terylene-cotton blended fabrics are composed of polyethylene terephthalate and cotton fibers. The method comprises the following steps: carrying out an alcoholysis reaction on the terylene-cotton blended fabrics, ethylene glycol and an alcoholysis catalyst to obtain a reaction mixture, wherein the alcoholysis catalyst is zinc acetate; carrying out solid-liquid separation on the reaction mixture to obtain a solid matter and a liquid matter, wherein the solid matter is the cotton fibers; and carrying outa pre-polycondensation reaction and a final polycondensation reaction on the liquid matter in the presence of a polycondensation catalyst to obtain polyethylene terephthalate. By using the separationmethod disclosed by the invention, the (waste) terylene-cotton blended fabrics with various blending ratios are successfully separated to obtain the terylene and cotton fibers.

The invention belongs to the technical field of carbon material manufacturing technology, and in particular relates to a method for preparing graphene by using lignin as a raw material. The method is as follows: a layered or powdered material is used as a substrate, the lignin and a catalyst precursor are alternately assembled on the surface of the substrate by a layer-by-layer electrostatic self-assembly method, then a lignin / catalyst precursor / substrate composite is put into a double-temperature-zone tubular furnace, a H2 / Ar mixed gas is introduced into the double-temperature-zone tubular furnace at a certain speed, at the same time the double-temperature-zone tubular furnace is heated by a certain procedure, after the double-temperature-zone tubular furnace is heated to target temperature, the temperature of the double-temperature-zone tubular furnace is held for a certain time, when the double-temperature-zone tubular furnace is cooled to room temperature, the sample is taken out, and is soaked in an acid for catalyst removal, and after a plurality of times of washing and vacuum drying, the graphene is obtained. The method has the advantages of simple process and convenient operation, and the prepared graphene is good in growth, controllable in layer number and considerable in yield.

The invention discloses a sulfomethylated alkali lignin-formaldehyde-sulfonated acetone polymer coal water slurry additive and a preparation method thereof. The additive comprises the following components, by weight, 11.5-20.0 parts of alkali lignin, 4.9-10.0 parts of a sulfonating agent, 0.1-0.8 parts of an alkaline regulator, 4.5-10.0 parts of acetone, 5.4-13.5 parts of formaldehyde, and 47.3-67.2 parts of water. The preparation method comprises the following steps: 1, reacting the alkali lignin with a certain amount of formaldehyde and a certain amount of the sulfonating agent to prepare sulfomethylated alkali lignin; and 2, carrying out a catalytic sulfonation reaction on acetone by the alkaline regulator and the sulfonating agent to obtain a sulfonated acetone prepolymer, adding the prepared sulfomethylated alkali lignin and a formaldehyde solution, and carrying out a polymerization reaction to form the coal water slurry additive containing sulfo, hydroxy and alkyl active groups. So the product and the product stability are improved. The additive of the invention has the advantages of simple method, easily available raw materials, short production period, good stability, nontoxicity, no seasonal and regional restriction of the use, convenient storage and transportation, and realization of the high value utilization of lignin.

The invention belongs to the technical field of material science and energy chemical engineering, and discloses a biomass-based nitrogen self-doped porous carbon material and a preparation method and application thereof. The preparation method includes the steps that chitin or chitosan is treated in high-temperature water at 180-300 DEG C for 2-24 hours, and a pre-carbonized product is obtained; the pre-carbonized product is mixed evenly with an activating agent aqueous solution, then the mixture is dried and heated to 600-1000 DEG C in an inert atmosphere for carbonization and activation for 0.2-10 hours, and the carbonized product is washed with an acid solution, then washed with water to be neutral and dried to obtain the biomass-based nitrogen self-doped porous carbon material. The high-temperature water treatment is conducted on chitin or chitosan, a favorable condition is thus provided for subsequent carbonization and activation for the preparation of the porous carbon material, and the nitrogen self-doped porous carbon material is excellent in super capacitor performance and CO2 adsorption property.

The invention relates to a preparation method of large-particle nitrogenous fertilizers, in particular to a preparation method of large-particle ammonium sulfate, which comprises the following steps: firstly, adding 25-60 parts by weight of sulfuric acid, 7.6-16.5 parts by weight of ammonia and washing liquid from a gas-liquid separator to a tubular reactor for neutralization reaction; spraying high-temperature slurry formed after the reaction into a pelletizer; wherein, simultaneously, a solid material bed which comprises 20-70 parts by weight of solid material and rolls together with returns in the pelletizer can be installed in the pelletizer; spraying a pelleting binder through a spray nozzle and spraying the ammonium through an ammonium spraying shaft for pelleting to form wet solid material; fractionating the dried material after entering a sieving machine to sieve qualified particles and then cooling the particles to obtain the product. The invention reduces the reaction load of the tubular reactor; the system returns ratio is reduced, and the water balance is easier to control; simultaneously, the production cost is reduced, and recycling and the high-value utilization of industrial byproducts are realized by utilizing by-product powdery ammonium sulfate.

The invention provides anti-radiation building putty powder and a preparation method thereof. Color picture tube glass and reinforced ingredients are mixed in proportion and ground till the particle size is 60 to 100 meshes to obtain ground powder; the ground powder is further mixed with cement in proportion to obtain ground anti-radiation building putty powder; the ground powder can be further calcined and mineralized and then mixed with the cement in proportion to obtain sintered anti-radiation building putty powder, so that the anti-radiation building putty powder can obtain higher chemical stability and use safety. By the method, the waste color picture tube glass is turned into resources, and the harmless disposal, recycling and high-value utilization of the waste color picture tube glass are implemented. The anti-radiation building putty powder can be widely applied to the surface treatment of a radiation protection body and a radioactive building material (building).

The invention discloses a method for preparing micro-nano hybrid mesoporous adsorbing microspheres by utilizing red attapulgite clay. The method comprises the steps of mixing the read attapulgite clay with silicate, and grinding, performing microwave heating at 80 to 140 DEG C, and activating for 0.5 to 4h; dispersing the obtained solid into an organic acid aqueous solution according to the solid-to-liquid ratio of 1 to 9.5, then adding a metal salt water solution, and uniformly stirring; transferring the obtained suspension liquid into a hydrothermal reactor provided with a tetrafluoroethylene liner, reacting at temperature of 160 to 260 DEG C for 2 to 48h, and cooling to the normal temperature at the speed of 10 DEG C/min; performing separating, washing, drying and smashing on a product to obtain the adsorbing microspheres. According to the method disclosed by the invention, the red attapulgite clay with abundant reserves, low grade and deep color and luster is subjected to treatment to obtain a spherical amorphous silicate adsorbing material with the mesoporous structure, and a product is large in specific surface area, uniform in pore diameter distribution, can be used for adsorption and enrichment or desorption of antibiotic, mycotoxin, dye and heavy metal, and has a wide application prospect in environmental restoration, wastewater treatment and feed additives.

The invention discloses a method for preparing magnetic cellulose aerogel by utilizing waste paper. An ultra-light multi-porous gas magnetic hydrophobic aerogel adsorbing material is prepared by using waste paper fibres in life as a raw material; waste paper regenerated cellulose gel is prepared by utilizing an microwave auxiliary ionic liquid dissolution method; black red waste paper cellulose aerogel is obtained through magnetic modification and hydrophobic and oleophobic modification. The magnetic cellulose aerogel disclosed by the invention can effectively remove a variety of organic pollutants and oily materials leaked in water; the absorption multiplying power is high; oil is absorbed thoroughly; an adsorbing material is non-toxic and harmless; the adopted magnetic collecting method is simple and easy to use; secondary pollution is low; the preparation method is simple in process and mild in conditions; waste can be changed into treasure by conventional industrial equipment and low-cost raw materials; the emission of waste water, waste gas and waste residues is avoided in a production process; the method has a wide popularization application value and social significance.

The invention provides a method for extracting a natural saponin and biosurfactant composite product. According to the fact that soapberry or Chinese honeylocust water extract contains cellobiose and monosaccharide in high concentration, the cellobiose is subjected to enzyme hydrolysis, water extraction enzyme hydrolysate is taken as a substrate, hilly candida and pseudomonas aeruginosa are inoculated, sophorolipid and rhamnolipid are produced by fermentation, the natural surfactant and biosurfactant composite product is obtained, and a practicable and efficient technical route is provided for preparing a natural saponin liquid detergent or other liquid products.

The invention provides a high-valued comprehensive utilization method of lithium slag, in particular to mineral waste residues obtained by lithium extraction of spodumene by a sulfuric acid method. The high-valued comprehensive utilization method comprises the following steps: firstly, carrying out size mixing and stirring on the lithium slag and enabling sulfate mineral in the lithium slag to bein a dispersed suspension state; secondly, carrying out desulfurizing treatment on a product obtained in the first step by using a physical ore dressing mode to obtain desulfurized slurry and tailingdiscarding produced slag and enabling the sulfur content of slag phase in the desulfurized slurry to be smaller than or equal to 0.5 percent; thirdly, under the condition that the magnetic field strength is 0.5 to 2.0T, carrying out magnetic separation on the desulfurized slurry obtained in the second step to obtain magnetic separation slurry and magnetic separation tailings and reducing the content of ferric oxide in the magnetic separation slurry to be smaller than or equal to 0.05 percent; then concentrating, filtering and drying the obtained magnetic separation slurry to obtain a pyrophyllite raw material for glass fibers. The treatment method of the lithium slag, disclosed by the invention, has the advantages of greenness and environmental protection, obvious economic benefits and capability of realizing the leap of high-valued recycling of the lithium slag.

The invention discloses a method for recycling a waste lithium battery positive electrode material under the assistance of biomass waste, and belongs to the technical field of resource cyclic utilization. According to the method, the biomass waste is used as a reducing agent, and the recovery of a waste power lithium battery and the regeneration of a ternary positive electrode material are organically combined, so that the cyclic utilization of the waste power lithium battery is realized at low cost. The method is short in technological process and low in synthesis cost and is suitable for large-scale production, and the regenerated nickel-cobalt-manganese ternary positive electrode material is excellent in performance and has the very good economic benefits and social benefits.

The invention discloses a preparation method and an application of a nitrogen-doped porous carbon material. A series of alginic acid proton ionic liquids are prepared based on the presence of a carboxyl group in the molecular structure of alginic acid by using a reaction of the carboxyl group and organic bases having different structures, the reaction is mild, the structures of the alginic acid proton ionic liquids can be easily and conveniently adjusted by regulating the structures of the organic bases in order to achieve the purpose of regulating the content and the kind of nitrogen in the nitrogen-doped porous carbon material and a precursor thereof, the alginic acid is doped with nitrogen in situ at the molecular level to solve the key problem of uncontrollability of a carbon source and a nitrogen source in order to realize the high-value utilization of a nitrogen-containing carbon material, and the alginic acid-based nitrogen-containing carbon material can be successful individually used as an electrode material, and can be successfully applied to the field of energy storage.

The invention discloses a method for preparing a super capacitor based on biogas residue active carbon produced after biomass anaerobic dry fermentation. The method for preparing the super capacitor based on the biogas residue active carbon after biomass anaerobic dry fermentation performs preprocessing on the biogas residues after biomass anaerobic dry fermentation, then performs high temperaturecarbonization and activation, and immerse an obtained activated product with acid and wash and dry the obtained activated product to obtain an activated carbon as a material of the electrode of the super capacitor. The active carbon prepared through the invention has an aperture structure on which micro holes and middle holes are distributed, has a relatively high specific surface area and has relatively high specific capacitance and cycling stability and is a relatively ideal electrode material of the super capacitor. The method for preparing the super capacitor based on biogas residue active carbon produced after biomass anaerobic dry fermentation uses the biogas to prepare a super capacitor so as to realize high value utilization of the biogas residual and the obtained active carbon isstable in structure and developed in pores, has a relatively high specific capacitance and cycle stability and is a relatively ideal electrode material of the super capacitor.

A catalytic cracking oil slurry pretreatment system and a pretreatment method by the utilization of the system are disclosed. The invention relates to the field of comprehensive utilization of catalytic cracking oil slurry, specifically to a catalytic cracking oil slurry pretreatment device, a system thereof and a pretreatment method. The invention aims to solve the problem of low efficiency during the process of catalytic cracking oil slurry pretreatment. The system comprises a solvent tank, a catalytic cracking oil slurry tank, a mixer, an ultrasonic centrifuge device, an ultrasound-assisted microwave-enhanced supercritical extraction device, a separator, a solid particle gathering tank, a heavy components collector and a light components collector. Through a raw material mixing unit, a solid-liquid separation unit, a solvent extraction unit, a components separation unit and a solvent recovery unit, catalyst granules and oil slurry are separated, and separation of light and heavy components of oils and precision cutting extraction are realized. The method has advantages of simple process equipment and good separation effect.