953results about "Raw material division" patented technology

Material cage type steam explosion equipment relates to the technical field of steam explosion and comprises an explosion kettle body, a material cage is detachably installed in the explosion kettle body, and the material cage is installed in the explosion kettle body in a rotating mode through a material cage rotating structure with the axis of the material cage as the rotating center. The steam explosion kettle solves the problems that in the prior art, when a steam explosion kettle body is large, materials are prone to being stacked when the steam explosion kettle body is filled with the materials, the material explosion effect is poor, charging and discharging are troublesome, and the material explosion efficiency is affected.

The invention discloses a mineral-based easily-recyclable compostable water-based barrier coating and a preparation method thereof, and belongs to the technical field of paper-based packaging materials. The coating takes water as a carrier, and is composed of a biodegradable film forming system and a designed graded lamellar mineral system composed of three minerals with different sizes and morphologies. The mineral system comprises flaky kaolin with specific morphology and size, non-asbestos grade flaky talc and fully stripped sodium montmorillonite. A mineral sheet layer forms a compact parallel spreading barrier path in a coating through a specific coating and drying curing process, and excellent water vapor and oxygen barrier, water resistance and oil resistance are realized under the low dry weight of 8-15g / m by combining with a pH value response type reversible cross-linking system. The coating system does not contain polyvinylidene chloride and perfluoroalkyl and polyfluoroalkyl substances. The paper-based material coated with the coating is easy to defibrillate and recover under the standard alkaline warm water condition, the fiber recovery rate is high, and meanwhile, the whole material meets the industrial composting requirement.

The invention discloses an efficient preparation method of nanocellulose, and belongs to the field of biological material preparation. The preparation method comprises the following steps: (1) pretreating straws to obtain small straw blocks; (2) putting the small straw blocks into a deep eutectic solvent composed of polybasic acid and polyhydric alcohol, uniformly stirring and mixing, and heating to obtain a mixed solution; (3) adding an initiation treatment reagent into the mixed solution to perform purification treatment, and then performing solid-liquid separation and decoloration to obtain nano cellulose; and (4) recovering the deep eutectic solvent, and initiating the treatment reagent to be reused. Compared with the prior art, the method has the advantages that the high conversion efficiency of 72.3%-98.1% is achieved, the solvent recovery rate is high, the cost effectiveness of the method is proved through further economic analysis, and the method is suitable for sustainable large-scale nano cellulose production. In general, the green, efficient, economical and feasible deep eutectic solvent route provides a promising solution for high-value utilization of biomass resources.

The invention relates to the technical field of aramid fiber recycling, high-performance fiber modification and functional fiber reinforced materials, in particular to recycled aramid pulp with mechanical force induced brooming and a preparation method of the recycled aramid pulp. The preparation method comprises the steps of physical screening, chemical stripping pretreatment, thread rolling, pulping, pulping mechanical force coupling, stepped heating drying and opener secondary delinting, and the prepared high-quality aramid pulp is applied to the fields of automobile friction materials, high-performance sealing products and special rubber composite materials. The problems that traditional recycled fibers are poor in dispersity, insufficient in specific surface area and weak in matrix interface bonding can be effectively solved.

A method for joining together two webs includes: overlapping a head portion of the second web on a tail portion of the first web, jointly cutting the head portion of the second web and the tail portion of the first web along a cutting line, so as to form on the first web and on the second web respective front edges offset from each other, and applying a first adhesive splicing tape between a head end of the second web and a tail end of the first web and at the same time aligning frontally with each other the front edges of the first and the second webs.

The application discloses a mineral-based easily-recyclable compostable water-barrier coating and a preparation method thereof, and belongs to the technical field of paper-based packaging materials. The coating is formed by a biodegradable film-forming system and a hierarchical lamellar mineral system containing three different scales and morphologies. The mineral system contains specific morphology and size of lamellar kaolin, non-asbestos grade lamellar talc and fully exfoliated sodium montmorillonite. The mineral lamella forms a dense parallel spread barrier path in the coating through a specific coating and drying solidification process, and combines a pH value responsive reversible cross-linking system to achieve excellent water vapor and oxygen barrier properties, water resistance and oil resistance at a low dry weight of 8-15 g / m2. The coating system does not contain polyvinylidene chloride and perfluoro and polyfluoro alkyl substances. The paper-based material coated with the coating is easily defibered and recycled under standard alkaline warm water conditions, and the fiber recovery rate is high, and meanwhile, the whole material meets the industrial composting requirements.

A method for lignocellulose hydrolysis is provided. The method includes: crushing an agroforestry biomass feedstock, extracting with a toluene-ethanol solution, and drying to obtain a de-extracted feedstock; weighing a metal salt and glycerol for mixing to obtain a type IV deep eutectic solvent; weighing the de-extracted feedstock and adding into the type IV deep eutectic solvent, and reacting for 2 h-4 h at a temperature of 80° C.-120° C. and a stirring speed of 300 rpm-500 rpm to obtain a pretreatment mixture; performing a solid-liquid separation to the pretreatment mixture to obtain a filter residue and a filtrate, and then drying the filter residue after washing to obtain a lignocellulose residue after pretreatment; and performing enzymatic hydrolysis reaction to the lignocellulose residue to obtain fermentable sugar.

The utility model discloses a pulping device for corrugated board production, which is characterized in that a placing box is fixedly arranged at the bottom of a pulping cylinder, an auger is rotatably arranged in the middle of the bottom of an inner cavity of the pulping cylinder, and a plurality of first crushing knives for crushing waste paper are uniformly and fixedly arranged on the outer wall of the auger; the utility model relates to the technical field of corrugated board production. According to the pulping device for corrugated board production, through mutual cooperation of L-shaped pipes, an arc-shaped pipe, a first spray nozzle assembly and a second spray nozzle assembly, when waste paper subjected to preliminary crushing falls into a pulping barrel and passes through the four L-shaped pipes, targeted water spraying can be conducted on the passing waste paper, pre-wetting is achieved, the waste paper subjected to pre-wetting continues to fall, and the waste paper is prevented from being damaged. The waste paper falls into the bottom of the inner cavity of the repulping cylinder and then is wetted again by water sprayed by the second nozzle assembly, so that water can be uniformly sprayed to each area of the surface of the waste paper, the waste paper is fully wetted, the softening effect is improved, and the subsequent repulping effect is guaranteed.

The invention provides a paper pulp molding waste recycling device, and relates to the technical field of molding waste recycling. Two crushing rollers are rotationally arranged on the crushing box, the two crushing rollers are meshed with each other, a first gear is welded to a rotating shaft of each crushing roller, and the two first gears are meshed with each other; a base is welded to the left end of the smashing box and is of an L-shaped structure, a first motor is fixed to the base, and an output shaft of the first motor is fixed to a rotating shaft of the smashing roller on the front side. When a gear rotates, the gear pokes a stress rod to enable two shearing plates to move back and forth in a reciprocating mode, molding waste is pre-sheared, follow-up smashing work is facilitated, the waste can be preliminarily treated into the shape easier to smash, the overall smashing efficiency is further improved, and the problems that the smashing structure is single, and the smashing efficiency is high are solved. The problems that the crushing effect on the large wood-plastic waste is not thorough enough, waste fragments cannot be screened after crushing, and the crushed large waste cannot be crushed again are solved.

The present invention relates to the technical field of the paper-making industry, and specifically, to a waste paper recycling and treatment device for paper-making. It includes a treatment device body, the treatment device body includes a treatment box, a gathering component is arranged inside the treatment box, the gathering component includes a horizontal plate and a vertical plate, a groove is formed on the outer wall of the vertical plate, and an insertion hole component is slidably connected inside the groove. An adjustment component is installed on the outer wall of the gathering component, and the adjustment component is used to adjust the position of the insertion hole component. A track groove is formed on the inner bottom wall of the treatment box, and an auxiliary component is arranged inside the track groove. When the vertical plate is erected and vertically locked with the horizontal plate, the present invention plays a role of a baffle in the vertical direction. The vertical plate and the horizontal plate form an "L"-shaped plate structure, which prevents the lateral movement of waste paper during the insertion process, and at the same time can effectively surround the waste paper to prevent it from splashing out of the treatment box during the insertion process. This helps to keep the working environment clean and reduce potential safety risks, increasing the applicability and flexibility of the machine.

The utility model relates to the technical field of pulpers, in particular to a rotary drum type pulper, a lifting device comprises two sliding rods, the two sliding rods are fixedly installed on the surface of a bottom plate, the surfaces of the two sliding rods are both connected with sliding plates in a sliding mode, a standing plate is fixedly installed between the two sliding plates, a long groove is formed in the surface of the bottom plate, and the standing plate is connected with the long groove in a sliding mode. Two long grooves are formed in the bottom plate, two movable plates are slidably connected into the long grooves, hinge plates are hinged to the surfaces of the ends, away from the long grooves, of the movable plates, L-shaped plates are fixedly installed on the surfaces of the two sides of the bottom plate, air cylinders are fixedly installed on the surfaces of the vertical ends of the L-shaped plates, and the output ends of the air cylinders are fixedly connected with the movable plates. According to the rotary drum type pulper, the problems that due to the fact that an existing rotary drum type pulper is large in size, a feeding hopper of the rotary drum type pulper is generally arranged at a high position, the rotary drum type pulper needs to be manually carried and climb to the high position in the feeding process, and certain potential safety hazards and danger exist in the feeding process are solved.

A sheet manufacturing apparatus includes a defibrator that defibrates a paper piece to form a defibrated material, an accumulator that accumulates the defibrated material on a mesh belt to form an accumulating material, a forming machine that forms the transported accumulating material to produce a strip-shaped sheet, and a return mechanism that sends a residual accumulating material that is the defibrated material being accumulating to the defibrator on condition that the accumulator has stopped or is stopped during accumulation.

The invention discloses a papermaking method taking waste grape branches as raw materials. The papermaking method comprises the following steps: (1) cutting back branches: cutting back all sections of annual grape branches; (2) peeling: soaking the cut-back branches in alkali liquor for 48 hours, then taking out the branches, cleaning the branches with clear water, and peeling off barks to obtain peeled branches; (3) cooking: cooking the peeled branches in a reaction kettle containing sodium sulfide and sodium hydroxide liquid, and taking out a softened material after cooking is completed. And (4) pulping and papermaking: washing the boiled softened material to be neutral, and then pulping and papermaking to prepare paper. According to the method, the cooking temperature is controlled through a sulfate cooking method, resource reutilization of waste in the vineyard is achieved, and the method has important significance in promoting healthy and sustainable development of the grape and wine industry.

The invention discloses a production process of a recycled waste paper papermaking board, and belongs to the field of recycled paper products. The recycled waste paper papermaking board comprises the following components: 80-95 parts of waste paper pulp, 3-10 parts of reinforced fibers, 1-5 parts of a reinforcing agent, 0.5-3 parts of a waterproof agent, 2-6 parts of an adhesive, 3-8 parts of a filler and 0.1-2 parts of an antibacterial agent. The production process comprises the following steps: waste paper is crushed and subjected to high-temperature soda boiling for impurity removal, and waste paper pulp is prepared; adding reinforced fibers, uniformly stirring, and performing fiber pulping treatment; adding the reinforcing agent, the waterproof agent, the adhesive and the filler, and continuously stirring for 10-20 minutes to uniformly disperse; a wet forming process is adopted, and the slurry is evenly spread and then pressed and formed; and after drying, an antibacterial agent is applied to the surface to improve durability. By optimizing the proportion of the waste paper pulp, the reinforcing agent and the waterproof agent, the strength, the water resistance and the durability of the papermaking plate are improved, and the papermaking plate is suitable for the fields of packaging, building templates and environment-friendly plates and has good recycling value and environment-friendly benefits.

The invention belongs to the technical field of enzymolysis and fermentation of lignocellulose, and particularly relates to a method for promoting enzymolysis and fermentation of straw cellulose by using fresh straw wall protein, which comprises the following steps: firstly, extracting straw cell wall protein and culturing engineering bacteria to obtain expansive-like protein; the method comprises the following steps: mixing the fresh straw cell wall protein and the expansion-like protein with steam explosion straw, carrying out pretreatment under proper pH and concentration, carrying out cellulose enzymolysis and synchronous saccharification fermentation, and finally converting into ethanol. The method effectively improves the straw conversion efficiency, is suitable for bioethanol production, combines the fresh straw cell wall protein and the expansion-like protein from microorganisms, and improves the bioethanol yield. The expansive-like protein and the fresh straw cell wall protein have a remarkable synergistic effect, the expansive-like protein can destroy a cellulose crystal structure in a non-hydrolytic manner and increase accessibility of cellulose, and the fresh straw cell wall protein provides multiple enzyme activities to jointly promote the enzymolysis process.

The invention provides a system for purifying stickies in pulp of a deinking pulp line, which relates to the technical field of papermaking industry and comprises a repulping carrying cylinder and a cleaning assembly, a treatment cavity is formed in the repulping carrying cylinder, a cleaning assembly is arranged in the treatment cavity, and the repulping device is characterized in that the cleaning assembly comprises a rotating supporting cylinder, the rotating supporting cylinder is rotationally installed in the middle of the treatment cavity, the outer side of the rotating supporting cylinder is fixedly connected with a connecting belt shaft, and the outer side of the connecting belt shaft is fixedly connected with a repulping cutter; the two-way lead screw is rotationally installed in the rotating supporting cylinder, one end of the two-way lead screw is fixedly connected with a rotating handle, and the outer side of one end of the rotating supporting cylinder is fixedly connected with a limiting angle block; the cleaning assembly is arranged, the cleaning assembly and the slurry are mechanically linked through adjustment, attached sticky substances and residual slurry are efficiently scraped through mechanical scraping, the cleaning efficiency is greatly improved, bacterium breeding caused by slurry residues can be eradicated, and it is guaranteed that follow-up slurry quality is not polluted from the source; and dual optimization of production efficiency and cleaning maintenance is realized.

The invention relates to the technical field of agricultural waste regeneration, and discloses a method for producing biomass protein by efficiently pretreating straw biomass through combination of steam explosion and a deep eutectic solvent, and the method comprises the following steps: air-drying straw at room temperature, crushing, and pre-extracting to obtain a straw sample for later use; adjusting the water content of the straw sample to a target water content, fully absorbing water at room temperature, filling the straw sample into a steam explosion reaction device, and carrying out steam explosion reaction; carrying out deep eutectic solvent treatment; and carrying out enzymolysis saccharification and fermentation treatment. By adopting the method disclosed by the invention, the removal rate of lignin reaches up to 40.8%, and meanwhile, more than 43.2% of hemicellulose is reserved; meanwhile, the specific surface area and the pore volume are increased, the straw structure is looser and curler, enzyme adsorption is facilitated, and the total sugar conversion rate reaches 50.4%. The crude protein content in the fermentation product reaches 25% or above, and the true protein content reaches 24.5%. The obstacle of straw biomass conversion is overcome, and a foundation is laid for processing the straw biomass into protein feed in a value-added mode.

The invention discloses a preparation method of high-color-fastness woven body paper and the high-color-fastness woven body paper, and relates to the technical field of papermaking, and the preparation method of the high-color-fastness woven body paper comprises the steps of preparing a composite dyeing assistant and preparing the woven body paper. The preparation method comprises the following steps: stirring and mixing cationic microcrystalline cellulose, sodium carboxymethyl cellulose, triethanolamine myriceate, glucan hydroxypropyl trimethyl ammonium chloride, a water-based polycarbodiimide cross-linking agent and deionized water to obtain a composite dyeing assistant, then adding the composite dyeing assistant into slurry, adding a water-based dye, and carrying out a papermaking process to obtain the composite dyeing assistant. According to the method, the color fastness of the woven body paper can be improved. The sun-proof grade of the high-color-fastness woven body paper is greater than or equal to 4 grades.

The utility model discloses a pulping device for production raw materials of packaging color boxes, which relates to the technical field of pulping of raw materials of color boxes and comprises a tank body, a support is fixedly connected to the lower portion of the outer surface of the tank body, and a supporting plate is fixedly connected to the inner surface of the support. A stirring device is jointly arranged on the top surface of the supporting plate and in the tank body and comprises a fixing box, a rotating shaft movably penetrates through the outer surface of the fixing box, a fixing plate is fixedly connected to the upper portion of the inner wall of the tank body, and the top end of the rotating shaft is rotationally connected with the middle of the bottom surface of the fixing plate; the lower portion of the outer surface of the rotating shaft is fixedly sleeved with a first bevel gear, the outer surface of the first bevel gear is connected with a second bevel gear in a meshed mode, and the outer surface of the rotating shaft is fixedly sleeved with blades. Raw materials can be stirred and beaten into paper pulp, and the beaten paper pulp can be poured out.

The invention discloses a carbon fiber paper-based material and a continuous calendering enhancement method thereof. The preparation method specifically comprises the following steps: repulping, grinding, defibering and sieving meta-aramid pulp, and then mixing with defibered and dispersed short carbon fibers to prepare paper pulp; sequentially carrying out forming, dewatering, squeezing and drying treatment on the slurry to obtain a carbon fiber base paper coiled material; and carrying out continuous calendaring enhancement treatment on the carbon fiber raw paper coiled material to obtain the carbon fiber paper. According to the method, the purpose that the temperature is higher than the glass transition temperature (larger than or equal to 273 DEG C) of the meta-aramid pulp can be achieved, the purpose of conducting hot pressing on the carbon fiber base paper can be achieved, the large-batch and continuous production requirements of the carbon fiber paper can be met, and the production efficiency is greatly improved.

The present application provides a kind of bamboo piece steam explosion equipment and method, including equipment body and pressure maintaining mechanism, the pressure maintaining mechanism includes the steam pipeline being arranged in equipment body and the valve group being fixed on steam pipeline;It also includes the positioning mechanism being movably arranged in equipment body for carrying the positioning mechanism of bamboo piece;And the transmission part being movably arranged in equipment body is connected with positioning mechanism;Bamboo piece is placed to positioning mechanism fixed, steam is supplemented to equipment body by steam pipeline and pressure is maintained, then control valve group makes equipment body steam explosion, while in the process of pressure maintaining and steam explosion, transmission part pulls positioning mechanism to move in equipment body;The present application makes bamboo piece in the steam explosion process of equipment body in the function of active state, to improve the utilization rate of steam explosion bamboo piece and steam explosion efficiency, and solve the problem of destroying bamboo piece shape in the process of steam explosion.

The process for the production of wood fiberboard comprises the step in which refined material from recycled wood fiberboards is wetted, heated and pressurized using steam; the step in which this material is kept under pressure and temperature for a certain amount of time, followed by the step of reducing the pressure of this material by at least 3 bar. After this pressure reduction, the material is transformed into recycled wood fibers, possibly with a fraction of wood fiber clumps and any other impurities. The recycled wood fibers are supplied as feedstock in a production line for producing wood fiberboard.

A defibering and deflaking pulper has a defibering rotor-stator pair and a deflaking rotor-stator pair for processing a fiber-based material into smaller pieces. The defibering and deflaking pulper creates an impeller-produced vortical circulation that pulls the material through a defibering rotor-stator interface, where the material is broken down into smaller pieces, and then through a deflaking rotor-stator interface, where the smaller pieces are broken down into even smaller pieces. The defibering and deflaking pulper accumulates the defibered and deflaked material that passes through the defibering rotor-stator interface and the deflaking rotor-stator interface for further processing. This combination of defibering and deflaking in the defibering and deflaking pulper reduces plugging from larger pieces of the material and reduces downstream processing of the material, thus increasing productivity and reducing costs.

The invention of the present disclosure concerns a loose fill insulation that can be produced from different types of plant fibers as well as a process for producing said insulation material. The insulation material has good heat-isolation properties and can be applied with a blow machine in voids in buildings and in attics. The process method solves several known problems with loose fill, and the material can be produced in an energy-efficient way. The insulation material is provided with a high heat-inertia, minimum convection and good sound-proofing ability. Fire-retardant substance is mixed into the fiber material and as a consequence speed of spreading of fire is reduced. The hygroscopic properties of the raw material are conserved, since the material is not exposed to high pressure, chemicals, water or high temperature. The loos fill insulation can be compacted into bales that can be easily handled making storage and transport more efficient from a volume perspective than for existing isolation materials. Upon application with blow machines, the formation of dust is reduced compared with existing loose fill insulation materials. The material does not cause itching as do numerous existing isolation materials, and upon inhaling of particles the same health risks as for stone wool, glass wool or traditional cellulosic materials are avoided. Fungicides, formaldehyde or pesticides are not needed to be mixed into the material.

The invention discloses a manufacturing method of an environment-friendly paper product. The environment-friendly paper product is prepared from the following raw materials in parts by mass: 60-70 parts of a main fiber raw material, 25-35 parts of an auxiliary fiber raw material, 3-8 parts of an environment-friendly additive and 1-2 parts of a pretreating agent. By means of the components, by adding the auxiliary fiber raw materials, the environmental protection property is remarkably improved, waste cotton and linen and agricultural waste are converted into papermaking raw materials, consumption of primary fibers is reduced, meanwhile, waste recycling is achieved, and pollution caused by incineration and landfill is reduced. The auxiliary fibers and the main fibers have a synergistic effect and are matched with the environment-friendly auxiliaries to reinforce the quality of the paper, the cotton and linen fibers improve the flexibility, the agricultural waste fibers enhance the stiffness, lignin and short fibers are separated through low-temperature pyrolysis, impurities are prevented from affecting the performance of the paper, and solid powder rich in the lignin and the short fibers is recycled and reused.

The utility model discloses a waste paper treatment device which comprises a bottom plate and is characterized in that the upper side of the bottom plate is fixedly connected with a support, the upper end of the support is fixedly connected with a supporting plate, the lower side of the supporting plate is connected with a stirring assembly through a lifting assembly, and the stirring assembly comprises a straight groove rod. The center of the straight groove rod is fixedly connected with the lifting assembly, a sliding block is arranged in a sliding groove of the straight groove rod, the lower side of the sliding block is fixedly connected with a limiting ring, and a rotating wheel is rotationally connected into the limiting ring. The utility model relates to the technical field of waste paper treatment, in particular to a waste paper treatment device which is used for stirring and crushing when waste paper is made into paper pulp.

The present invention provides a pulp sheet for producing fluff pulp that has excellent deodorizing properties, good crushability, and easily recovers its bulk after compression. [Solution] A pulp sheet for producing fluff pulp is prepared by blending (A) softener kraft pulp, (B) metal ion-containing cellulose fibers having ionic substituents and containing ions of one or more metal elements selected from Ag, Au, Pt, Pd, Ni, Mn, Fe, Ti, Al, Zn, or Cu, and (C) softener, such that (C) is 0.1 to 50 parts by mass per 100 parts by mass of the total of (A) and (B).

This invention relates to the field of packaging carton raw material recycling and processing technology, and discloses a packaging carton raw material recycling and processing equipment, including a screening frame, a screening cylinder fixed above the screening frame, a hollow screening roller rotatably connected to the screening cylinder, a plurality of screening grooves and flow grooves respectively opened on the hollow screening roller, and a plurality of first screening holes opened on the hollow screening roller, and a rotatable electromagnet adsorption roller provided in the screening groove, a movable scraper frame provided in the screening groove, and a plurality of strip scrapers slidably connected to the hollow screening roller; the electromagnet adsorption roller rotates automatically in the screening groove to reduce the dead angle of metal impurity adsorption, while the scraper frame drives the turning rod to move back and forth synchronously to turn over the carton fragments, and can also scrape off impurities around the first screening holes, improving the efficiency of automatic separation of small non-metallic impurity particles from carton fragments.

The invention relates to a process for producing non-woven fabric-like composite materials, novel non-woven fabric-like composite materials, articles made therefrom and their use. In particular the fabric-like composite materials are derived from shredded polymer-glued or polymer-coated paper products and coffee grounds as raw material.