60results about "Raw material division" patented technology

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 related to an apparatus for recycling of lignocellulosic fibres from a fibreboard (10) comprising compressed lignocellulosic fibres bonded together by a binding agent. The apparatus (100) comprises a transport device (110) arranged within a closed housing (111), wherein the housing (111) is arranged for steaming pieces (11) of the fibreboard (10) at super-atmospheric pressure to decompress and release the lignocellulosic fibres by hydrating them, as well as hydrolysing the binding agent, and the transport device (110) is arranged for transporting the fibreboard pieces (11), upon being steamed, from an inlet (116) of the housing (111), at which the fibreboard pieces (11) are fed to the housing (111), to an outlet (118) of the housing (111), at which steamed portions (12) comprising released lignocellulosic fibres exit the housing (111). Further, the apparatus comprises a steam generator (160) in communication with the housing (111), whereby the fibreboard pieces (11) may be steamed at super-atmospheric pressure in the housing (111) to provide the steamed portions (12) comprising released lignocellulosic fibres, an inlet pressure lock (120) configured to receive the fibreboard pieces (11) at atmospheric pressure and to deliver them to the housing (111), via the inlet (116), at super-atmospheric pressure, and an outlet pressure lock (130) configured to receive steamed portions (12) comprising released lignocellulosic fibres via the outlet (118) and ejecting recycled lignocellulosic fibres (13) during a sudden expansion of super-atmospheric pressure.

This invention provides a biomass pretreatment method using a steam-coupling twin-screw extruder, along with cellulose-containing biomass and its applications. The biomass pretreatment method includes the following steps: sequentially subjecting pre-softened biomass raw materials to steam treatment and twin-screw extrusion crushing to obtain biomass particles; the biomass particles are then subjected to a cooking reaction to obtain cellulose-containing biomass. This invention utilizes the synergistic effect of steaming and twin-screw extrusion crushing to overcome the mass transfer resistance of dense wood with low energy consumption, aiming to solve the problems of dense forest biomass structure, high energy consumption in traditional pretreatment methods, and difficulty in chemical penetration. This process can effectively reduce the amount of chemicals used to achieve efficient and directional separation of components, fully adapting to the needs of low-cost, continuous industrial production.

This application relates to a continuous pulping method for high wet strength waste paper and a horizontal tube continuous digester. The method involves continuously feeding shredded high wet strength waste paper into a horizontal tube continuous digester with an aspect ratio of 8:1, where it is mixed with water and PAE crosslinking breaking agent to form pulp. Steam is directly introduced into the reactor for heating, and a central rotating shaft with a shearing plate is driven to rotate at a low speed of 5-15 r / min, applying continuous and gentle mechanical agitation and shearing to the pulp. The pulp is then continuously processed and discharged. This application achieves an effective synergy between high temperature, chemical degradation, and mechanical shearing, breaking through the inefficiency bottleneck of traditional intermittent hydraulic pulping. It not only achieves continuous and efficient production but also effectively improves fiber dissociation rate and significantly reduces unit energy consumption and loss of pulp physical strength.

The present disclosure relates to a system (100, 200, 300, 400) for handling a plait (ZP) formed in a pulper process, comprising a cutting device (110) with at least one movable knife (112) which is configured to sever a plait (ZP); a sensor system (210, 320, 410) which is configured to detect operating data (MD1, MD2, P) in relation to the cutting device (110); and a processor module (220, 320) which is configured to determine implementation instructions for a cutting operation and / or state information in relation to the cutting device (110) based on the operating data (MD1, MD2, P).

This invention provides a low-cost and environmentally friendly papermaking pulping process, comprising the following steps: S1. Pretreatment of papermaking fiber plant raw materials. S2. Oxy-alkali cooking: The pretreated papermaking fiber plant raw materials are mixed with an aqueous sodium carbonate solution, and cooked for 0.5–5 hours using oxygen as an oxidant. Then, sodium hydroxide is added, and cooking continues for 0.3–2 hours. Finally, the pulp and black liquor are separated by pressing. S3. Black liquor treatment: The black liquor is mixed with fiber waste, pressed, and burned as biomass fuel. S4. Recovery and causticization. This papermaking pulping process uses sodium carbonate and a small amount of sodium hydroxide for staged oxy-alkali pulping, and the generated black liquor is mixed with fiber waste and burned to recover sodium carbonate and heat, reducing the causticization rate and pulping costs.

The utility model discloses an energy -conserving high -efficient pulper for papermaking production relates to papermaking technical field, and its technical scheme main points include jar body, the upper end fixed connection of jar body has the oblique ring, the center fixed connection of oblique ring has the pulper barrel, and the sidewall and the bottom wall of pulper barrel are opened respectively and have a plurality of material holes, the upper end fixed connection of jar body has the cross arm, and the cross arm is rotatably connected with vertical shaft, and one end of vertical shaft is connected with the output shaft of motor through the coupling, and motor installs on the cross arm, and vertical shaft is fixedly connected with blade, and blade is located in the inside of pulper barrel, raw materials can slide into pulper barrel along oblique ring, can drive vertical shaft rotation through motor, and vertical shaft drives the blade on it rotation, and blade cuts and crushes the raw materials in pulper barrel, and because pulper barrel is smaller, and the contact efficiency of blade and raw materials is higher, and blade can efficiently crush the raw materials in pulper barrel, and effectively improves pulping efficiency.

This utility model relates to the field of papermaking equipment technology and discloses a high-consistency pulper for papermaking, including a base, a tank body fixedly installed on the top of the base, a top cover detachably installed on the top of the tank body, a discharge pipe fixedly installed on the bottom of the tank body, a motor fixedly installed on the inner wall of the bottom of the base, a rotating shaft fixedly installed through the output end of the motor through the inner wall of the bottom of the tank body, a spiral belt fixedly installed on the outer wall of the rotating shaft, and a dispersion component for accelerating the crushing of high-consistency waste paper pulp is arranged inside the tank body. In this high-consistency pulper for papermaking, under the transmission of a pinion and a gear ring, the turntable drives the dispersion plate to rotate in the opposite direction relative to the rotating shaft below the fixed frame. Larger diameter pulp blocks move outward along the tangential direction of the pulp rotation and collide head-on with the dispersion plate. At this time, the several perforations inside the dispersion plate, and the bends and corners within the perforations, also have an auxiliary crushing effect on the pulp.

An automatic clamping device for steam explosion apparatus, relating to the technical field of steam explosion apparatus, includes a plurality of radially sliding clamps forming a clamping area. A material cage cover is located within this clamping area, and a support body is rotatably mounted on the top of the material cage cover. In the clamped state, the support body rests on the upper ends of the clamps. This invention solves the problems of traditional clamping structures that rely on frictional force for clamping and transport, which cannot be adapted to the structural design of the material cage to utilize its own weight for clamping and transport. This leads to increased wear on structural components and shortened service life. Furthermore, existing material cage clamping structures require manual assistance and cannot achieve fully automated opening and closing of the material cage cover, resulting in low work efficiency and safety hazards.

The application discloses a kind of high thickness of high bulk pulp and its preparation process, belong to papermaking technical field.The technical scheme is as follows: including the following steps, raw material preparation and pre-soaking treatment, reaction bin reaction, high consistency refining treatment, bleaching, latent elimination, low consistency refining, screening and washing, 1) raw material preparation and pre-soaking treatment: the raw material wood chip is broken, then pre-soaking is carried out, control pre-soaking temperature 80~90 ℃, pH value 9.8~10.2, liquid level ≥50%, ADI back pressure ≥4bar, NaOH dosage is 1.5%~2.0% of dry wood chip weight;2) high consistency refining treatment: the wood chip after pre-soaking is sent into high consistency refiner for refining, refining consistency 35~45%;3) bleaching: pulp after refining is sequentially subjected to one-stage bleaching and two-stage bleaching.The application process has high stability, and can realize the synchronous and stable improvement of bulk and freeness.

The application relates to the packaging and recycling fields, in particular to a degradable temperature control corrugated paper box for cold chain logistics and a recycling method, which comprises a paper box body made of corrugated paper board and at least one biodegradable functional composite film which is separably adhered to the outer surface and / or the inner surface of the paper box body through a water-soluble adhesive layer, the biodegradable functional composite film comprises a hydrophobic surface layer, a phase change heat preservation middle layer and a hydrophilic inner layer, the phase change heat preservation middle layer is dispersed with phase change material microcapsules, an irreversible thermochromic indicating label is arranged on the paper box body or the biodegradable functional composite film, and the application further comprises a recycling method of the degradable temperature control corrugated paper box. The application achieves the technical effects of effectively controlling the temperature in the cold chain logistics, degrading the paper box, facilitating recycling and utilization, reducing environmental pollution, and directly reflecting the temperature condition through the thermochromic indicating label.

The present application relates to a drum pulper and a method of retrofitting a drum pulper. A drum pulper (1) for separating recyclable fibers from waste material comprises an elongated drum (14) having a feed direction (F), and the drum (14) comprises in the feed direction (F) an inlet zone (3) and a screening section (50) provided with at least one hopper (7) for receiving a suspension. The screening section (50) comprises nozzles (12) for spraying water to the waste material inside the drum (14). The hopper (7) comprises a first tank (7a) and a second tank (7b) arranged in succession in the feed direction (F) of the drum pulper (1), and the drum pulper (1) comprises a conduit (9) for feeding the suspension from the second tank (7b) to the inlet zone (3).

A method for processing a lignocellulose biomass material with a moisture content below 10 weight-% and an ash content below 1.0 weight-% includes: adding an acid catalyst to the lignocellulose biomass material; after adding the acid catalyst, thermally treating the lignocellulose biomass material with steam at an elevated pressure and an elevated temperature in at least one reactor; discharging the lignocellulose biomass material and blow steam from the at least one reactor using a steam explosion discharge device; and forming pellets and / or briquettes from at least part of the discharged thermally treated lignocellulose biomass material.

The utility model provides a kind of waste paper pulp feed inlet of dry method fiber recovery device, mainly relates to paper pulp recovery equipment field.A kind of waste paper pulp feed inlet of dry method fiber recovery device, including feed pipe.The utility model has the beneficial effects that: by being set movable rotating feed plate structure on the upper portion of feed pipe, by this kind of structure moves and further changes feed inlet size, and further adapts more different size specifications of feed mechanism to the inside of device for feeding, further by being set by servo motor driven rotating feed plate structure drives feed plate to rotate auxiliary waste paper fiber to enter equipment, reduce fiber scattering and enter equipment and produce the problem of floating, further to the side of feed inlet set retractable and by spring overturn retractable plate structure, by retractable plate structure prevent waste paper fiber after entering equipment and discharge again, and further by the length of retractable plate that can be changed cooperation movable rotating feed plate structure moves to avoid the influence of both.

This invention discloses a food-grade antibacterial packaging paper based on biomass conversion and its preparation method, relating to the field of papermaking technology. The packaging paper uses areca leaf mechanical pulp rich in lignin and natural phenols as a substrate. After alkali treatment and oxidase activation of the phenolic hydroxyl groups on the fiber surface, a chitosan-tea polyphenol layer is coated onto its surface, followed by ionic crosslinking and interfacial co-crosslinking with phytic acid to construct a dense fiber-coating network structure. This improves the paper's mechanical strength, water and oil resistance, and inhibition of common pathogenic bacteria while maintaining its renewability, biodegradability, and food contact safety.

The present application belongs to the technical field of waste biomass recycling, and specifically discloses an environment-friendly treatment system for plant fiber molding waste, which comprises a pulping device and a cleaning device matched with the pulping device. The pulping device comprises a tank body, and a stirring impeller is arranged in the tank body. The cleaning device comprises a side wall cleaning mechanism matched with the tank body, and an upper baffle and a lower baffle are arranged above and below the side wall cleaning mechanism, respectively. The upper baffle and the lower baffle are both in sliding connection with the tank body. The upper baffle is connected with a lifting mechanism. The environment-friendly treatment system for plant fiber molding waste can clean and add water while pulping, and can improve the production efficiency of paper pulp.

The utility model relates to the technical field of waste currency processing, in particular to a waste currency pulping and deinking device, which places waste currency in a storage mechanism, uses high-pressure water to pulping the waste currency through a pulping mechanism, forms paper pulp, and then uses compressed air to cooperate with a deinking agent to deink the paper pulp through a deinking mechanism, thereby improving the practicability of the equipment, comprising a storage mechanism, further comprising a pulping mechanism and a deinking mechanism, both of which are installed on the storage mechanism, the storage mechanism stores waste currency, the pulping mechanism pulps waste currency, and the deinking mechanism deinks waste currency.

The present invention relates to an apparatus (1) for use in cellulose hydrolysis. The apparatus (1) comprises a channel (10) for guiding a stream of cellulose-containing waste in a flow direction (FD); one or more cylinder(s) (20) arranged to rotate around an axis (A), such that, when rotated, one or more side surfaces (21) of said cylinder(s) (20) exhibit a linear velocity vector orthogonal to said axis (A); and one or more complementary surfaces that face said side surfaces (21), such that, when the cylinder(s) (20) are rotated, the side surfaces (21) and complementary surfaces cooperate in grinding the waste. The present invention further proposes a respective method for cellulose hydrolysis.

A base plate for a pulp processing unit includes a plate having an upper axial surface, a lower axial surface, and a plurality of openings extending through the plate from the upper axial surface to the lower axial surface. Each of the plurality of openings has a shape, a size, and an angle. The shape is a cross-sectional shape, a size equal to a maximum cross-sectional dimension, and the angle is an angle formed between a center line of each of the plurality of openings and an axial line parallel to a center axis of the base plate. The shape, size, orientation of shape, angle, or combination thereof of the plurality of openings varies depending on the position of the openings on the base plate. The invention further discloses a paper pulp processing unit comprising the bottom plate.

This invention relates to the field of pulp and paper technology, specifically a method for recycling chemimechanical pulp residue. The method includes the following steps: S1: Pre-treating the chemimechanical pulp residue by separating wood chips, wood strips, and wood dust according to size using a drum-type grading screen; S2: Performing at least two stages of grinding on the pre-treated pulp residue, first coarsely grinding it into granules using a wood grinder, and then finely refining it into wood fibers using a high-speed refiner; S3: Performing multi-stage gradient screening on the wood fibers to remove different types of impurities; S4: Modifying the screened wood fibers using a low-consistency dual-disc mill to improve their water absorption and binding strength; S5: Mixing the modified wood fibers with long fibers and obtaining the finished fiber through a three-stage concentration process. This invention constructs a complete technical chain from graded pre-treatment to specific mixing and concentration, effectively solving the problems of equipment blockage caused by uneven pulp residue composition and poor binding strength of recycled fibers, achieving high yield and high-quality recycling of pulp residue.

Method for separation of particulate material and at least one volatile organic compound from blow steam obtained from a hydrothermal treatment reactor for hydrolysis and / or steam explosion of lignocellulosic material, the method comprising: feeding (3) the blow steam to a condenser, partially condensing (4) the blow steam using said condenser, collecting (5) the condensate from the partial condensing, withdrawing (6) at least a portion of the collected condensate, said condensate comprising said particulate material, withdrawing (7) a non-condensed fraction of the blow steam from the condenser, and separating (9) at least one volatile organic compound from the non-condensed fraction of the blow steam A corresponding system is also provided.

The application relates to the technical field of papermaking equipment, in particular to a cleaning pulper for papermaking. Straight skirt edges are arranged on both sides of a conveying belt of an inclined conveyor, and a plurality of vertically-extended baffles are equidistantly arranged on the surfaces of the straight skirt edges, and each baffle and the straight skirt edge form a storage cavity. The raw materials can be pre-hydrated and expanded in the storage cavity during the movement of the inclined conveyor on the slope, so that the expansion time in a pulper is shortened, and the disintegration efficiency of the pulper body is improved. In addition, the end part of the rack of the inclined conveyor is fixedly connected with a folding belt support through a tension spring. The folding belt support can force the straight skirt edges and the baffles to be folded, so that the pre-hydrated raw materials can be accurately poured into the pulper. Through the above structural design, the production efficiency of the pulper body can be improved by adding a pre-hydrating treatment structure.

The utility model provides an environmental protection type paper production equipment of uniform stirring relates to environmental protection type paper production technical field, including pulper, one end of pulper is connected with flow box, the inner wall of flow box is opened with preliminary filter box, the inner wall of flow box is opened with deposit case, the inner wall of flow box is opened with recovery groove, the inner wall of preliminary filter box is connected with screen cloth, the inner wall fixed connection of flow box has the clamping groove, the inner wall of clamping groove is connected with filter plate, one side of flow box is connected with water pump, the outer surface fixed connection of water pump has the flow guide pipe. The utility model, the pulp will drop into the inside of deposit case through screen cloth, and the originally paper pulp inside contains a large amount of white water and will enter the inside of recovery groove through filter plate, then through water pump and inject the inside of flow guide pipe with white water, then through flow guide pipe and inject the inside of pulper with white water again, thereby realizes the recycling of water source.

The application provides a paper product, a paper pulp and a processing method thereof; the processing method comprises the following steps: multiple pulp washing; using a pulp squeezing machine to perform pulp beating, and conveying white water obtained by the pulp beating to other pulp lines; and inputting the pulp after the pulp beating into a pulp feeding tank. The processing method of the paper pulp provided by the application utilizes the surplus capacity of the pulp squeezing machine of the existing pulp beating workshop in the factory, improves the pulp washing efficiency through process flow technical improvement of part of the pipelines and equipment, improves the pulp cleanliness through the process technical method, improves the pulp COD, PCD and odor value, improves the pipeline pulp feeding capacity, meets the quality and pulp demand of the paper machine for the chemical pulp, and further improves the proportion of the chemical pulp, and reduces the comprehensive cost per ton of paper.

The utility model discloses a wood pulp fiber conveying distribution device, including at least one's first rubbing crusher or second rubbing crusher, wherein, first rubbing crusher or second rubbing crusher is connected with first channel or second channel respectively, first channel or second channel is connected to extension channel through connecting channel, wherein, extension channel is connected to air supplement channel. The utility model is directly sent to the web former of wood pulp all to the net belt, and unlike the wood pulp forming device of filter screen structure of previous adoption has the non - constant wood pulp return process, thereby greatly reduced the fluctuation of wood pulp amount with time of sending out, can effectively adjust the distribution state of wood pulp in the export width direction before wood pulp reaches wood pulp channel export, even if wood pulp channel export is rubbing crusher export width ratio reaches 1:3 still can obtain the wood pulp flow that is evenly distributed and continuously stably sent along the width direction in the export, effectively solved the width requirement of non - woven fabric, avoided the distribution difference problem when the width of multiple rubbing crusher is parallel.

The utility model discloses a kind of paperboard disintegrating devices of bobbin raw paper production, it is related to bobbin raw paper production technical field, including pulverization box, fixedly installed with feed inlet on pulverization box, fixedly installed with discharge outlet on pulverization box one side, pulverization mechanism is installed in pulverization box and feed inlet, and pulverization mechanism includes first conveying roller and second conveying roller rotatingly installed in feed inlet and the pulverization knife rest rotatingly installed in pulverization box, annular blade is fixedly installed on first conveying roller, knife groove is opened in second conveying roller, air supply mechanism is connected in the bottom of pulverization box, first conveying roller, second conveying roller and the end of pulverization knife rest are fixedly installed with synchronous gear, and synchronous gear is engaged together two by two. The paperboard disintegrating device of bobbin raw paper production, annular blade will cut paperboard into smaller paper strip in loading process, prevent the situation that the pulverization knife rest is stuck, and smaller paper scrap can be screened out.

The invention relates to a method for obtaining peat-substitute fibres from fibre-containing biomass, in particular annual plants, wherein the biomass is subjected to hydrothermal digestion in a thermal hydrolysis process, preferably via steam explosion, and then a first separation of the digested biomass into a first fibre fraction and a liquid phase, which is enriched with dissolved organic and inorganic substances and finely suspended solids. According to the invention, before the hydrothermal digestion, the biomass is comminuted, then process water is added to mash the comminuted biomass, and after the hydrothermal digestion, the digested biomass is mashed again, preferably in a further step, and then the first separation is carried out.

A kind of recycling waste paper pulping device with dust removal function, it relates to papermaking raw material processing technical field, the technical scheme used includes conveyor, pulper being arranged at the discharge end of conveyor, spray dust-settling device and negative pressure dust removal device;Spray dust-settling device includes spray pipeline, water mist nozzle being arranged on spray pipeline and fog machine;Negative pressure dust removal device includes dust cover, conveyor dust removal pipe and pulper dust removal pipe;Multiple conveyor dust removal pipes are arranged above conveyor, conveyor dust removal pipe is connected to first fan, and first fan is connected with dust collector;Multiple pulper dust removal pipes are arranged above pulper, and pulper dust removal pipe is connected with gas-water separator, and gas-water separator is connected to second fan.The utility model through spray dust-settling generated in loading process, through negative pressure suction dust-settling generated in conveying process and gas dust separation, through negative pressure suction dust-settling generated in pulping process, water vapor and water vapor separation, guarantee the health of operator.

This utility model relates to a white pulp production system for A3 grade kraft paper, comprising: a chain conveyor for conveying white pulp residue recovered from a wastewater treatment plant to a pulper; a pulper for pulping the white pulp residue conveyed by the chain conveyor and then sending it to a high-consistency desander; a high-consistency desander for removing desander from the pulper and then sending it to a discharge pulp tower; a discharge pulp tower for storing the pulp after desandering by the high-consistency desander; a discharge pump for sending the pulp in the discharge pulp tower to a low-consistency desander; a low-consistency desander for removing desander from the pulp conveyed by the discharge pump and then sending it to a thermal dispersion system; a thermal dispersion system for thermally dispersing the pulp and then sending it to a medium-fiber storage tower; and a storage tower for storing the pulp after thermal dispersion treatment. By treating the white pulp residue recovered from the paper mill wastewater treatment plant, it can replace domestic waste white pulp, optimize the process flow, and reduce raw material costs.