180 results about "Recycled products" patented technology

The invention relates to the technical field of life cycle management, in particular to a catalyst industry chain-oriented full life cycle traceability method and system, and the method comprises the steps: obtaining the state attribute data of the same batch of recovered products, and carrying out the analysis to obtain an efficiency feature vector; inputting the efficiency feature vector into a preset quality evaluation model for matching, and identifying quality deviation data of the recycled product; the batch identity codes are analyzed, and resume data of the production full life cycle are obtained; a multi-dimensional data association model is constructed, quality deviation data is taken as a target variable, resume data is taken as an input feature, an influence weight coefficient and an attribution confidence index of each production control variable on the quality deviation are analyzed, and key control elements are screened out; and performing production regulation and control optimization operation based on the key control elements, calculating target parameter offset for correcting quality deviation, dynamically calculating a dynamic tolerance constraint range of a production control variable in combination with an attribution confidence index, and packaging into an execution management and control protocol.

The invention relates to the technical field of film processing, and particularly discloses a plastic film processing waste recovery device which comprises a recovery box, a feeding port is formed in the top end of the recovery box, and the recovery box comprises a primary crushing mechanism used for primary crushing and a cleaning mechanism used for preventing winding. In the using process, through mutual cooperation of the primary crushing mechanism and the secondary crushing mechanism, waste materials can be further crushed into smaller shapes, gradual refining treatment on the waste materials can be achieved in a multi-stage crushing mode, the crushing uniformity and fineness are improved, the quality of recycled products is improved, and the recycling efficiency is improved. Through mutual cooperation of the primary crushing mechanism and the cleaning mechanism, waste remaining in notches between the crushing teeth can be scraped away in time, so that cleanliness between the crushing teeth is kept, it is guaranteed that the crushing rollers can continuously and efficiently conduct crushing work, normal operation of equipment is guaranteed, the shutdown maintenance time is shortened, and the production efficiency is improved. And the working efficiency and the reliability of the device are improved.

The present disclosure relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.

The present disclosure relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products. Herein are systems and processes for extracting lithium using ion exchange materials, where transition metal impurities may be removed from the synthetic lithium solution. In some embodiments, the transition metal species are reformulated to form ion exchange materials to be used in the systems and processes described herein.

The invention discloses a preparation method of regenerated glass fiber reinforced PA6 plastic particles based on a fan blade, and the preparation method comprises the following steps: crushing the fan blade and removing metal impurities to obtain a crushed material; the crushed material is subjected to pyrolysis treatment, and a primary treatment material is obtained; performing low-temperature oxidation treatment on the primary treatment material to obtain a secondary treatment material; the secondary treatment material is placed in an impregnating compound to be subjected to impregnating treatment, and surface-modified regenerated glass fibers are obtained; mixing the regenerated glass fiber with a resin matrix to obtain a mixed material; and melting the mixed material, and carrying out injection molding extrusion to obtain the recycled glass fiber reinforced plastic particles. According to the preparation method of the reinforced PA6 plastic particles based on the regenerated glass fibers of the fan blades, the pure glass fibers can be recycled from the fan blades, the reinforced plastic particles can be prepared after the recycled glass fibers are mixed with the resin, and further high-value utilization of recycled products is achieved.

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.

The invention provides an EPR supply chain management method and system based on big data. The method comprises the steps that current position information and life cycle information of at least one to-be-recycled product are determined; according to the current position information and the life cycle information, recycling position information of all the to-be-recycled products is determined; inputting the current position information and the recovery position information into a preset reverse logistics path planning model to obtain a reverse logistics path output by the reverse logistics path planning model; and based on the reverse logistics path, the to-be-recycled product is recycled. A plurality of recovery points are set, corresponding recovery position information is selected according to current position information and life cycle information of a to-be-recovered product, a reverse logistics path is determined based on a reverse logistics path planning model, and a final recovery position of the product is determined before the to-be-recovered product is recovered, so that the recovery efficiency is improved. And additional storage cost and logistics cost are prevented from being increased.

The invention discloses lightweight aggregate based on ardealite and multi-source solid waste as well as a preparation method and a utilization method of the lightweight aggregate, and aims to solve the problems of low utilization rate of the ardealite and the multi-source solid waste, high energy consumption and high carbon emission of a utilization scheme, insufficient long-term water stability of a recycled product and the like in the prior art. The phosphogypsum and the multi-source solid waste are gelatinized by using the alkali activator, so that the solid waste generates viscosity to form a polymerized gel material, and the gelatinization process is realized by using the activity of the industrial solid waste, so that the lightweight aggregate with high strength and good performance is obtained. And meanwhile, the lightweight aggregate is classified in a cascade manner according to different strength grades of the lightweight aggregate, so that the practicability of the recycled product is improved.

The invention discloses a resource recycling method of waste lithium iron phosphate batteries, which comprises the following steps: mixing lithium iron phosphate black powder and a chlorinating agent, and performing chlorination separation roasting to obtain roasted sand and flue gas; and the roasted product is subjected to leaching treatment, and flue gas is subjected to defluorination and dechlorination treatment through a semi-dry method. According to the recycling method, the chlorinating agent is introduced for chlorination separation roasting, phosphorus in lithium iron phosphate reacts with the chlorinating agent to generate a phosphorus-containing compound phase, high-temperature reduction conversion of iron is achieved through graphene / carbon black in the black powder, and a magnetite phase is formed; a phosphorus-containing compound phase and a magnetite phase generated in the chlorination segregation roasting process are subjected to high-temperature segregation, and lithium exists in the form of a lithium-containing compound. And the roasted sand and the flue gas are treated at the same time, so that various recycled products can be obtained, the emission of the flue gas is reduced, and the high-value recycling purpose is achieved.

The invention relates to the technical field of solid waste recycling, in particular to a bean dreg recycling method which comprises the following steps: adding a first compound enzyme into bean dregs and first water to perform enzymolysis, performing ultrasonic treatment and first heating treatment on the prepared first mixture, and performing first centrifugal treatment to prepare first liquid and first solid; adding a second compound enzyme into the first solid and second water for enzymolysis to obtain a second mixture, and carrying out second heating treatment and second centrifugal treatment on the second mixture to obtain a second liquid and a second solid; an oligosaccharide concentrated solution prepared from the first liquid can be used as an additive of a soymilk beverage, and a soybean hydrolysis concentrated solution prepared from the second liquid; the soybean hydrolysis concentrated solution can be used as a freshener; the insoluble fiber polysaccharide prepared from the second solid can be used as a dietary fiber supplement or used for preparing feed. According to the method, recycling and comprehensive utilization of the bean dregs are achieved, secondary pollution is avoided, the application range of recycled products is wide, and the economic value is high.

The invention belongs to the field of preparation of electrode materials, and relates to a preparation method of a silicon-carbon electrode material, the silicon-carbon electrode material and application of the silicon-carbon electrode material. The invention provides a method for preparing a silicon-carbon electrode material. The method comprises the following steps: S1, cutting, crushing and screening a retired fan blade to obtain blade powder; s2, the leaf powder is subjected to acid pickling, filtering, washing and drying, and purified leaf powder is obtained; s3, pyrolyzing the purified leaf powder to obtain leaf pyrolytic carbon powder; s4, performing vacuum Joule heating on the blade pyrolytic carbon powder to obtain a solid product; s5, the solid product is subjected to ball milling and screening treatment, a silicon-carbon electrode material is prepared, specific Joule heating temperature, time and the like are selected, a silicon source and a carbon source in the retired fan blade are recovered and converted into the silicon-carbon electrode material, a recovered product with a high additional value is obtained, the resource value is increased, the whole process is simple, convenient and efficient, and the method is suitable for industrial production. Good application prospects are realized.

The present invention relates to the extraction of lithium from liquid resources such as natural and synthetic brines, leachate solutions from clays and minerals, and recycled products.

The invention relates to the technical field of construction waste treatment, in particular to an intelligent treatment system for construction waste recovery. The system comprises a front-end data acquisition layer for acquiring and integrating data of each level of each garbage collection management link through a plurality of deployed data acquisition devices; the data layer is used for processing various data of the front-end data acquisition layer and establishing a database; the business layer is a core technology layer of the intelligent treatment system for building garbage recovery, and is used for realizing garbage analysis and detection and vehicle scheduling of a project construction site, garbage classification treatment in a production process, regenerated product capacity statistics and equipment coordination and linkage treatment based on data of the data layer; and the application layer is used for presenting the data of the data layer in a visual form through terminal equipment. Vehicle scheduling can be automatically carried out through front-end data acquisition and processing, the processing efficiency is high, the quality of regenerated products is good and the production efficiency is high through intelligent management, and the utilization rate of resources is improved.

The invention relates to a wafer recovery method, a diffractive optical waveguide manufacturing method, and a diffractive optical waveguide. The wafer recycling method comprises the following steps that a diffraction optical waveguide to be recycled is provided, the diffraction optical waveguide to be recycled comprises a substrate wafer, a cut-off layer and a grating wafer which are arranged in a stacked mode, and the surface of the cut-off layer and / or the surface of the grating wafer have defects caused by etching; carrying out etching and / or chemical mechanical polishing on the defect surface of the diffraction optical waveguide to be recycled until the preset surface roughness is reached, so as to obtain a recycled wafer; the manufacturing method of the diffraction optical waveguide comprises the following steps of forming a thin film wafer on the surface of a cut-off layer of a receiving sheet, and carrying out etching treatment on the surface of the thin film wafer, and S3, before manufacturing is completed, if the cut-off layer and / or the surface of a grating wafer have defects caused by etching, preparing a recycled wafer according to the recycling method. According to the method, recycling of unqualified products is achieved, the production cost is reduced, the stability of the performance of the recycled products is improved, and the method is suitable for medium-batch and large-batch machining and manufacturing of the silicon carbide diffraction optical waveguides.

The invention discloses a renewable ramie fiber / wool blended fabric and an environment-friendly dyeing and finishing process thereof, and belongs to the technical field of textile fabrics. The renewable ramie fiber / wool blended fabric is prepared from, by mass, 30%-50% of renewable ramie fibers, 25%-40% of wool fibers, 15%-30% of regenerated cellulose fibers and 0.5%-3% of functional auxiliaries, the ramie fibers are derived from recycled products, and the auxiliaries contain antibacterial agents and anti-wrinkle agents. During preparation, fibers are subjected to ultrasonic pretreatment, spinning and weaving to obtain grey cloth; the dyeing and finishing adopts biological enzyme desizing, hydrogen peroxide bleaching, natural vegetable dye dyeing and formaldehyde-free color fixation. The antibacterial rate of the fabric is larger than or equal to 90%, the anti-wrinkle recovery angle is larger than or equal to 280 degrees, the COD of dyeing and finishing wastewater is smaller than or equal to 400 mg / L, formaldehyde residues are avoided, energy consumption is low, excellent performance and environmental friendliness are both considered, and the method is suitable for the field of spinning.

The invention discloses a method for separating and recycling components of a flame-retardant polyamide material, aiming at solving the problem of environmental pollution of flame-retardant polyamide waste plastic products, improving the resource recycling efficiency, providing a new way for supplying high-quality regenerated high-value chemicals for industrial production and innovating a new normal form for resource regeneration recycling economy development. The method comprises the following steps: decomposing the molecular structure of a nylon resin matrix in the flame-retardant polyamide material in an acidolysis manner so as to separate brominated polystyrene, reinforced fibers and other added and filled components from the nylon resin matrix; high-quality recovered products such as brominated polystyrene and antimony trioxide are obtained through separation, purification and recovery technologies such as solvent extraction and precipitation, and are circularly used for producing flame-retardant materials such as flame-retardant polyamide and flame-retardant polyester, so that resource recycling of high-value chemicals such as brominated polystyrene and antimony trioxide is realized; the method has remarkable economic benefits, environmental benefits and social benefits, and has a wide application prospect.

The invention discloses a method for recycling and reusing polyurethane foam. The method includes: (1) The functionalized oligomers are obtained by adding solvent and catalyst to the polyurethane foam. (2) The functionalized oligomers are chemically modified, and the photosensitive group is introduced through the functional group reaction. The diluent, photoinitiator, and light absorber, etc. are introduced into the obtained oligomers to prepare photocurable resin. It can be used for photocurable coatings or 3D printing. This method has a fast reaction time, easy recovery of solvent and catalyst, higher value-added recycled product, good economic benefits, and social value.

Herein a specific method for the treatment of a polymer blend is described. The obtained material can be converted to obtain specific materials and products.

A process for separating polyamide 6 and / or polyamide 66 from elastic polyurethane (spandex) present in a textile production waste or in an end-of-life textile product, and the recovery and recycling of at least one of the polymers thus separated is described.

The invention belongs to the technical field of polyester plastic recovery, and particularly relates to a method for recovering polyester plastic based on one-pot method ring-opening copolymerization and recycled polyester, and the method specifically comprises the following steps: (1) proportionally feeding the polyester plastic and cyclic lactone; (2) heating to 200-280 DEG C in an inert atmosphere, and carrying out depolymerization and ring-opening reaction of lactone for 1-12 hours; and (3) carrying out polymerization reaction for 1-12 hours at the temperature of 200-280 DEG C after vacuumizing. According to the method, the polyester and the lactone are subjected to ring-opening copolymerization recovery based on a one-pot method to obtain a high-added-value product, the step of depolymerizing to form a monomer or a prepolymer during traditional polyester chemical recovery is not needed, a special chemical solvent does not need to be used for purifying the product, and the mechanical property of the regenerated product is superior to that of original polyester plastic; the thermal decomposition temperature is equivalent to that of the original polyester.

The invention belongs to the field of recycling of polyester materials, and particularly discloses a recycling method for a thermosetting flame-retardant polyester composite material, which comprises the following steps: S1, preparing a thermosetting phosphorus-containing flame-retardant polyester composite material; s2, degrading the thermosetting phosphorus-containing flame-retardant polyester composite material to obtain a degraded product of the thermosetting phosphorus-containing flame-retardant polyester composite material; s3, a product obtained after degradation of the thermosetting phosphorus-containing flame-retardant polyester composite material is separated and recycled, and a recycled product is obtained; and step S4, recycling the recovered product. According to the recycling and reusing method for the thermosetting flame-retardant polyester composite material, the thermosetting phosphorus-containing flame-retardant polyester composite material can be degraded, and the recycled product of the thermosetting phosphorus-containing flame-retardant polyester composite material can be reutilized.

This invention relates to a one-pot chemical recovery method for lactam polyamides and its application, comprising: feeding lactam polyamide, diacid, diamine, or diol; followed by a depolymerization reaction under an inert atmosphere at a temperature of 100–250°C for 0.5–12 h; and finally, a polymerization reaction under vacuum at a temperature of 150–280°C for 0.5–12 h. This invention is based on a one-pot method for directly chemically recovering lactam polyamides to recycled polyamide or recycled polyesteramide, saving the steps of traditional chemical recovery to monomers or prepolymers and reducing monomer purification costs. Simultaneously, the reaction process forms a portion of cyclic lactams that can be separated and reused to synthesize lactam polyamides, ultimately generating recycled polyamide or polyesteramide products. The mechanical properties of the recycled products are comparable to those of lactam polyamides, and the recycled polyesteramide, in particular, possesses biodegradability in soil due to the introduction of ester bonds.

The present invention relates to a paint-grade, high-toughness recycled ABS and a preparation method thereof. The preparation method comprises mixing recycled ABS, a high-flow additive, a tackifier, and a compatibilizer, melt-extruding, and cooling to obtain the recycled ABS product. Compared with existing technologies, this invention effectively addresses the industry pain points of low surface gloss and high paint rejection rates encountered during the secondary processing of recycled ABS. The resulting recycled ABS resin has mechanical properties and surface characteristics comparable to those of virgin ABS. This not only reduces environmental pollution caused by waste materials and increases the value of recycled materials, but also enhances the product competitiveness of plastic modification companies.

The invention discloses a construction waste regenerated product carbon footprint accounting method and system, and relates to the technical field of construction material carbon footprint analysis, and the method comprises the steps: obtaining carbon footprint related data of a construction waste regenerated product in a plurality of life cycle stages, the plurality of life cycle stages comprise a recovery and transportation stage, a treatment stage and a regenerated product production stage; based on the first carbon footprint related data corresponding to the recovery and transportation stage, determining the carbon emission of the recovery and transportation stage; based on the second carbon footprint related data corresponding to the processing stage, determining the carbon emission of the processing stage; based on the third carbon footprint related data corresponding to the regenerated product production stage, determining the carbon emission of the regenerated product production stage; and determining the total carbon footprint of the construction waste regenerated product based on the carbon emission in the recovery and transportation stage, the carbon emission in the treatment stage and the carbon emission in the regenerated product production stage.

This invention relates to the field of lifecycle management technology, specifically a method and system for full lifecycle traceability of the catalyst industry chain. The method involves acquiring state attribute data of the same batch of recycled products and parsing it to obtain an efficiency feature vector; inputting the efficiency feature vector into a pre-set quality evaluation model for matching to identify quality deviation data of the recycled products; parsing the batch identification code to obtain production lifecycle history data; constructing a multi-dimensional data association model, using quality deviation data as the target variable and history data as input features, analyzing the weight coefficients and attribution confidence indices of each production control variable on the quality deviation, and screening out key control elements; performing production regulation and optimization operations based on the key control elements, calculating the target parameter offset used to correct the quality deviation, and dynamically calculating the dynamic tolerance constraint range of the production control variables in conjunction with the attribution confidence index, and encapsulating it into an execution control protocol.

The invention discloses a grain soaking wastewater resource utilization method and application of recovered substances thereof, and the method specifically comprises the following steps: (1) removing suspended substances in grain soaking wastewater, and then carrying out reduced pressure distillation and concentration to obtain a wastewater concentrated solution; (2) adjusting the pH value of the wastewater concentrated solution to 8.0, then standing to separate out a precipitate, then carrying out centrifugal separation to obtain an acid-soluble substance, and collecting a supernatant for later use; (3) carrying out adsorption separation on phenolic acid substances in the supernatant by adopting macroporous resin, collecting an eluent, carrying out reduced pressure distillation to obtain the phenolic acid substances, and collecting polysaccharide-rich impurity-removed water for later use; and (4) removing protein in the impurity-removed water in the step (3) by using a Sevage reagent, carrying out reduced pressure distillation and concentration to a viscous state, then adding an 80% ethanol solution, carrying out ultrasonic oscillation for 30 minutes, standing to separate out a precipitate, and carrying out centrifugal separation to obtain the polysaccharide. According to the method, acid-soluble substances, phenolic acid substances and polysaccharide can be separated and recycled from the grain soaking wastewater, resource utilization of the grain soaking wastewater is achieved, and carbon emission is reduced.

Specific methods for treating polymer blends are described herein. The obtained materials can be converted to obtain specific materials and products.

The invention refers to a method for generating a carbon-specific recycling product attribute allowing a reliable carbon tracking. Input material data of input material streams associated with one or more carbon-specific input material attributes is provided. The input material streams include a recycling material stream for producing output material streams. Output material data associated with output material streams and associated with one or more carbon-specific output material attributes is provided. The carbon-specific recycling product attribute for an output material is generated based on the carbon-specific input material attributes and the carbon-specific output material attributes. The generated carbon-specific recycling product attribute is assigned to the output material.

Provided is a method for producing a recycled product of waste plastic, which makes it possible to recycle a large amount of waste plastic. The manufacturing method comprises the following steps: charging waste plastics into a coke oven at a predetermined maximum charging height which is a height exceeding half of the oven width of the coke oven, and performing dry distillation for a predetermined dry distillation time to generate a dry distillation product, tar, light oil and gas; and taking out the dry retort from the coke oven by means of the extruder; the value of the predetermined dry distillation time is obtained by determining a relational expression between the maximum loading height of the waste plastic and the dry distillation time required for the completion of the dry distillation, and substituting the predetermined maximum loading height into the relational expression to calculate the predetermined dry distillation time.