370 results about "Pulp and paper industry" patented technology

The invention relates to the technical field of packaging, in particular to an intelligent metering method for remnant base paper rolls of a corrugated paper board assembly line. The intelligent metering method for the remnant base paper rolls of the corrugated paper board assembly line comprises steps as follows: a plurality of base paper feeding positions are arranged in the conveying direction of the assembly line at intervals, a base paper feeding frame is arranged in each base paper feeding position, and two base paper feeding rolls located on two sides of each base paper feeding frame are arranged on the base paper feeding frame; each base paper feeding roll is provided with lap recording sensors and incremental encoders, the lap recording sensors are used for monitoring the number of paper feeding laps of base paper clamped on the corresponding base paper feeding roll, the incremental encoders are used for monitoring the length of each lap after the base paper on the base paper feeding roll passes by one lap, and the lap recording sensors and the incremental encoders are connected with a controller. Intelligent metering can be realized, the operation cost of an enterprise is reduced, labor is saved, and the utilization rate of enterprise resources is increased.

The invention relates to a process for treating carbon black, which process comprises gasification of a carbon black-containing feedstock at a temperature of from 730°C to 950°C. The carbon black-containing feedstock is typically pyrolytic carbon black, such as recycled carbon black. It is believed that the resulting treated carbon black has a lower coke content and, as a result, the resulting rubber articles have improved properties.

DEPCT67 This invention provides a method for producing recycled pulp fibers from used absorbent materials; a method. That leads to the achievement of recycled pulp fibers that exhibit high dispersibility, and which matter Foreign particles are easily detected and removed; this invention provides a method for producing pulp fibers. Recycled from used absorbent materials containing pulp fibers, a method that includes a dehydration step (S03). and the loosening step (S04) in the dehydration step, the membrane fibers are separated from the used adsorbent and Cleaned and introduced into dehydration during the loosening process, each piece of the fibrous mass is a pulp. A certain amount that was formed by dehydration is unleashed to produce recycled pulp fibers;

This invention discloses a production device for co-extruded mixed-color wood-plastic composite materials with wood grain imitation, in the field of wood-plastic recycling technology. The device includes a machine body, a twin-screw plasticizing component within the machine body, a second feed pipe containing a stirring component, a positive cone and an inverted cone whose lower ends can overlap to close the lower end of the second feed pipe, a metering mechanism for metering raw materials from the main hopper into the second feed pipe and adding a corresponding proportion of additives, and a secondary hopper located on the machine body and connected to both the second feed pipe and the twin-screw plasticizing component to buffer the mixture after stirring in the second feed pipe. The secondary hopper is funnel-shaped. The device allows for metered, multi-stage feeding and precise replenishment of raw materials, avoiding uneven mixing caused by direct replenishment in the main feed hopper. Pre-mixing improves the uniformity of additive dispersion, enhances wood grain color difference and mechanical property stability, reduces batch rework, increases production efficiency, and lowers the risk of thermal degradation of recycled materials.

The utility model relates to cottonseed high protein production and processing technical field, especially a kind of cottonseed high protein production shell in cotton kernel recycling device. The device contains bending shell (1), bending shell (1) top is air port connecting flange (8), bending shell (1) top contains a rectangular feed slot (7) of inclined arrangement;The mouth on rectangular feed slot (7) can enter material;Air port connecting flange (8) can connect suction force providing structure. Advantageous effects: by the above technical scheme, the utility model can effectively reduce the content of small cottonseed and cotton kernel in cotton shell, improve the quality and yield of cottonseed white egg, reduce resource waste and improve enterprise economic efficiency.

Methods, apparatuses, and systems for extracting lignin from non-wood black liquor are disclosed. The non-wood black liquor is heated to a first temperature to degrade hemicelluloses contained therein. The liquid is then cooled to a second temperature. The pH of the cooled liquid is chemically reduced to precipitate lignin from the liquid. The liquid is filtered to separate the precipitated lignin from the liquid.

The invention relates to a molasses-added binder-containing formulation for use in the production of wood-based composite boards, which provides cost savings and environmentally friendly production, as well as a preparation method of this binder-containing formulation. The invention aims to introduce a binder-containing formulation capable of maintaining the physical and mechanical properties of wood-based composite boards at a high level, while reducing the amount of free formaldehyde by up to 70%. Furthermore, another object of this invention is to propose an economical binder-containing formulation in the production of wood-based composite boards. Within the scope of the invention, a binder-containing formulation with high biobinding properties is created, thus enabling an environmentally friendly production process. In this way, a binder-containing formulation is made possible that both supports environmental sustainability and provides economic advantages.

The present invention relates to a paper suitable for the production of bags and packaging, with a high porosity rate and softness, providing a higher printability quality, produced from bleached short fiber cellulose, and its respective production process.

This invention relates to the field of wastewater treatment technology and discloses a method for controlling ammonia emission reduction and stabilization during the storage and fermentation of a fecal-water mixture. This method addresses the problem in traditional methods of achieving coordinated control of ammonia volatilization inhibition and stabilization during the storage and fermentation process of a fecal-water mixture with continuously fluctuating composition and fermentation activity. The method first divides the incoming materials into batches and identifies their state to determine the volatilization risk state and fermentation acceptance state. During the storage stage, it performs graded control, continuous verification, and activity recovery treatment. After meeting the transition conditions, it implements fermentation transition control. During the fermentation stage, it sequentially performs stabilization advancement, stabilization control, and abnormal regression treatment, thereby achieving coordinated control of ammonia volatilization inhibition and stabilization during the storage and fermentation of the fecal-water mixture.

The application discloses a waste wood processing artificial board carbon emission accounting method for recycling, which calculates the total mass of building waste and waste wood in the demolition stage and the target waste wood mass and proportion; a carbon emission accounting model including the demolition recycling and transportation stage is constructed, a carbon emission accounting model for the crushing and cutting treatment process is established; the total carbon emission accounting of the waste wood regenerated artificial board is utilized; a traditional process factory treatment regenerated artificial board carbon emission accounting model including traditional pretreatment, traditional processing and traditional production artificial board and a carbon emission difference model of the traditional process and the regenerated process are constructed, and the total carbon emission saved by the waste wood replacing the original wood is accounted. The application systematically sorts out the carbon sources of the whole process of waste wood recycling and processing, establishes a carbon emission accounting path of waste wood recycling, provides direct and accurate quantitative basis for the development of the carbon emission reduction scheme of the engineering project, and solves the problem of insufficient practicability of the existing model.

The application discloses a production process for preparing composite carbon source by utilizing fruit and vegetable waste resources, and comprises the following steps: raw material pretreatment, anaerobic fermentation for acid production, composite enzymolysis, deep solid-liquid separation, composite blending, and stabilization treatment; the blending carbon source liquid is pumped into the stabilization treatment tank, 0.1%-0.3% of a compounded stabilizer is added, the pH value is adjusted to 6.0-7.0, normal-temperature standing is carried out for 12-24 hours, product detection and storage are carried out, the carbon source product after the stabilization treatment is detected in terms of COD, total nitrogen, total phosphorus, the pH value and the content of small-molecule organic acid, and after each index is qualified, the product is sealed and packaged and stored in a cool and dry environment, and the application solves the technical problems of high cost, poor safety, single fruit and vegetable base carbon source component, low degradation efficiency and poor product stability of traditional carbon sources.

The application discloses a kind of high cotton wool blended yarn production methods, it is related to textile relevant technical field, including steps: wool sliver is cut into wool staple, and wool staple is oiled with the emulsifier of setting concentration prepared by oil agent and water;Wool staple after oiling is covered with plastic film, after setting time, according to the proportion of 60% cotton and 40% wool is mixed, and is made into mixed cotton sliver;Cotton is made into pure cotton sliver;Mixed cotton sliver and pure cotton sliver are drafted, roved, spun, automatically wound, and the yarn of cotton wool blended yarn is made.The high cotton wool blended yarn production method provided by the application can effectively improve the efficiency of spinning high cotton wool blended yarn, and improve the quality of yarn.

1. Name of the product in this design: Water Purifier (Cube Frost White). 2. Purpose of this design: To manufacture and sell purified drinking water. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. The top surface of this design product is a part that is not easily seen or not visible during use, so the top view of Design 1 is omitted; the bottom surface of this design product is a part that is not easily seen or not visible during use, so the bottom view of Design 1 is omitted; the top surface of this design product is a part that is not easily seen or not visible during use, so the top view of Design 2 is omitted; the bottom surface of this design product is a part that is not easily seen or not visible during use, so the bottom view of Design 2 is omitted. 6. Design 1 is designated as the basic design.

This invention relates to the field of wood processing technology, specifically to a method for processing wood with a transparent PVC coating, comprising: processing wood into a predetermined shape to form a wood core blank; drying the wood core blank; removing glue from the surface of the wood core blank to obtain a finished wood core; extruding PVC to form a PVC outer material; the PVC outer material having a cavity, placing the finished wood core inside the cavity with a gap between the finished wood core and the inner wall of the cavity; continuously introducing humid air into the gap through one end of the cavity; after the finished wood core expands and cooperates with the PVC outer material to fix itself, sealing both ends of the cavity; this invention utilizes the characteristics of wood's shrinkage and expansion with moisture, replacing traditional glue bonding with an interference fit, thereby improving the tightness and stability of the bond; sealing both ends forms a seal, locking in the moisture content, and isolating external bacteria and moisture, preventing the wood from mold and decay, and achieving good compatibility between the two materials even when their thermal expansion and contraction rates are different.

The application discloses a desalination method for 1,3-propanediol fermentation liquor, and comprises the following steps: sequentially performing bacteria removal and concentration on the 1,3-propanediol fermentation liquor to obtain a primary concentrated solution; and performing specific chromatographic separation and desalination on the primary concentrated solution by using a chromatographic separation system to obtain a desalination solution; by the specific chromatographic separation and desalination process, the PDO fermentation liquor can be directly subjected to chromatographic separation and desalination after being filtered by ultrafiltration, the nanofiltration membrane filtration process is reduced, and the PDO extraction process is simplified; in addition, the product yield of PDO in the desalination process of the PDO fermentation liquor can reach more than 98%, the chromatographic separation and desalination rate is increased to more than 90%, the residual amount of the distillation kettle is significantly reduced, the product yield of PDO in the distillation process is increased, and the product quality is significantly improved.

The utility model belongs to the field of fruit juice preparation, specifically speaking is the pomegranate juice multistage filter equipment of quick replacement filter screen, including frame, the frame is fixedly connected with the frame on the frame, the inside installation of frame is installed with the plate, the plate is fixedly connected with the filter cloth on, the top of frame is fixedly connected with electric push rod, the output of electric push rod is fixedly connected with the stem, the bottom of stem is fixedly connected with extrusion disc, extrusion disc is located above the frame, through setting frame, plate, filter cloth, extrusion disc and electric push rod, when using, the staff pours the mixed solution of pulp juice on the filter cloth, then relies on filter cloth to separate pulp and juice, then plays electric push rod, and the extrusion disc at the bottom is driven to move down, and the pulp above filter cloth is extruded by extrusion disc, so as to squeeze out the juice inside its pulp, thereby reducing the juice remaining in the pulp, improving the dryness of pulp, reducing the waste of juice.

This invention relates to the technical field of coffee cherry peeling and degumming equipment, and discloses an integrated coffee cherry peeling and degumming machine. It includes a feeding hopper mechanism, with a support frame bolted to the bottom. A peeling mechanism is fixedly connected to the support frame, and a conveying pipe is bolted to the bottom of the peeling mechanism. A conveying screw is rotatably installed inside the conveying pipe, and one end of the conveying pipe is bolted to a sorting mechanism. A secondary peeling and pre-degumming mechanism is located below the sorting mechanism. This invention, by incorporating the peeling mechanism and the secondary peeling and pre-degumming mechanism, can completely peel the coffee cherries to form coffee beans. After the initial peeling, the sorting mechanism separates the green cherries, which are discharged from the green cherries outlet chute, resulting in better coffee bean quality. Furthermore, the degumming mechanism removes the gum from the outer surface of the coffee beans, making them less sticky. The integrated machine is compact and occupies less space.

The present invention provides a method for recovering white liquor and a white liquor separation accelerator that makes it possible to reduce the amount of white liquor contained in the lime mud after recovering the white liquor from the emulsion, thereby enabling the separation and recovery of more white liquor from the lime mud. [Solution] The method for recovering white liquor includes a white liquor treatment step of recovering white liquor by separating the lime sludge from the emulsion, which is a mixture of white liquor and lime sludge generated during the manufacture of kraft pulp, by filtration, and further includes a separation enhancement step of adding a white liquor separation enhancer, which contains at least a nonionic surfactant and promotes the separation of lime sludge and white liquor in the emulsion, to the emulsion before or during the white liquor treatment step.

This utility model relates to the field of pulp molding technology and discloses a pulp molding suction mold for uniform pulp absorption. The mold includes a tank with multiple support columns on its side walls. The invention features a removable tray inside the tank. During repeated pressing of the pulp onto the tray in conjunction with the pressure plate of the liquid cylinder assembly to achieve uniform pulp absorption, the tray can be removed for loading and unloading. This solves the problems of material debris adhering to the tray during repeated pressing, hindering unloading, and the tray's location inside the operation area obstructing loading. This facilitates pulp pressing and subsequent uniform pulp absorption for molding. After pressing, the tray can be removed from the tank, and the screen can be removed from the tank via a side opening, allowing for convenient removal of the internal structure and cleaning of any liquid adhering to the inner walls.

This utility model relates to the field of filtration device technology and discloses a sea buckthorn plant beverage juicing and filtration device, including a filtration chamber, a fixing plate, and a juicing assembly. A juicing chamber for juicing sea buckthorn plants is fixedly connected inside the filtration chamber. An inlet is fixedly connected to the top of the juicing chamber, and a storage chamber for storing sea buckthorn plant juice is fixedly connected to the bottom of the filtration chamber. An outlet is fixedly connected to the right end of the storage chamber. A door panel is rotatably connected to the filtration chamber via a rotating component. The crushed sea buckthorn plant pulp and juice fall into the interior of a filter bag. The juice seeps out from the filter bag, while the pulp remains inside, thus separating the pulp from the juice. The distance between two sets of squeezing rollers is adjusted according to the volume of pulp stored inside the filter bag. Finally, the two sets of squeezing rollers move synchronously up and down, squeezing out the juice from the pulp inside the filter bag, thereby avoiding resource waste and improving the practicality of the device.

The application discloses an engineering biogas fermentation device and a method thereof. The fermentation device comprises a liquid fermentation material feeding mechanism and a solid fermentation material feeding mechanism. The liquid fermentation material feeding mechanism comprises a homogenate pool, which is connected with a feeding port of the fermentation device through a liquid inlet pipe. The solid fermentation material feeding mechanism comprises a feeding hopper and a conveying device. The conveying device comprises a motor and a conveying belt driven by the motor. The feeding hopper is arranged on the conveying belt. The solid fermentation material enters the feeding hopper and is fed to the fermentation device by the conveying device as needed. The liquid fermentation material feeding mechanism and the solid fermentation material feeding mechanism cooperate to form a mixed area for feeding in two directions at the bottom of the fermentation device. The application can reduce the methane emission of fermentation materials in the storage link in the station and the energy efficiency loss caused by invalid degradation of the fermentation materials. The application can provide high-quality fermentation raw materials for a biogas project and realize effective quality preservation and emission reduction.

This invention relates to the field of amino acid mother liquor resource utilization technology, specifically disclosing a method for the resource utilization of amino acid mother liquor. Specifically, the method involves: treating the amino acid mother liquor by electrodialysis to obtain an inorganic salt solution and desalted material; using the inorganic salt solution as an inorganic salt supplement for reuse in the amino acid fermentation production process; concentrating, crystallizing, and separating the desalted material to obtain crude amino acids and final mother liquor; and spray-granulating the final mother liquor to produce organic fertilizer. Compared with existing ion exchange and chromatographic separation technologies, the process provided by this invention has significant advantages such as simple flow, stable operation, no need for acid-base regeneration, and low equipment investment and operating costs. It achieves both amino acid resource recovery and the resource utilization of inorganic salt impurities, realizing a balance between clean production and economic benefits.

The application provides an environment-friendly high-efficiency defoaming agent for an anaerobic digestion system, and belongs to the technical field of defoaming agents.The application comprises the following components in percentage by mass: 15-20% of a solid defoaming component, 35-50% of an oil-state defoaming agent component, 30-40% of water, 4% of a composite emulsifier and 1% of a thickening agent; the solid defoaming component is one of calcium soap, glycerol monostearate and biocarbon of biogas residue; the oil-state defoaming agent component is glycerol trioleate or mineral oil; the compounding relationship of the solid defoaming component and the oil-state defoaming agent component does not comprise the compounding of calcium soap and mineral oil.The application is prepared by using components without biological toxicity and containing no silicon, and the obtained environment-friendly high-efficiency defoaming agent for the anaerobic digestion system has no biological toxicity, does not damage the gas production efficiency of the anaerobic digestion system, has high foam inhibition effect and foam reduction rate, and does not pollute the biogas combustion system after use.

The utility model discloses a vinasse fermentation residue continuous squeezing, dewatering and recycling device which comprises a squeezing and dewatering support and a squeezing roller installed on the inner side of the squeezing and dewatering support, and the inner side, close to the squeezing roller, of the squeezing and dewatering support is connected with a liquid collecting tank. And the surface of the liquid collecting tank is connected with a filter plate. In the process that the vinasse fermentation residues are continuously squeezed and dehydrated through the squeezing roller, waste water generated after squeezing falls into the liquid collecting tank at the moment, the waste water generated after vinasse fermentation residues are squeezed is filtered through the filter plate at the moment, so that floating foam and particle impurities are filtered to the surface of the filter plate, then the pushing air cylinder is started, and the vinasse fermentation residues are continuously squeezed and dehydrated through the liquid collecting tank. According to the waste water recycling device, the slag pushing plate is driven to push floating foam and particle impurities on the surface of the filter plate, and the floating foam and the particle impurities are pushed into the collecting tank, so that pre-filtering treatment in the waste water recycling process is facilitated, the phenomenon that the interior of a pipeline is blocked is avoided, and meanwhile, the waste water recycling effect is improved.

This invention relates to a method for the graded utilization of wet-process phosphoric acid and the co-production of food-grade phosphoric acid and ammonium phosphate, belonging to the field of phosphoric acid chemical technology. The method first purifies the raw phosphoric acid, with the main process involving multi-stage extraction and back-extraction to obtain food-grade phosphoric acid. For the byproduct raffinate acid, no complex purification is required; instead, a slurry process is used directly to prepare fertilizer. When producing diammonium phosphate, the final neutralization pH is controlled at 8.0-8.5, and the degree of ammoniation is 1.8-2.0. When producing monoammonium phosphate, the raffinate acid is mixed with slag acid and filter solids, and a small amount of raw material acid is added to neutralize to a pH of 4.0-4.5, with a degree of ammoniation of 1.0-1.1. This invention overcomes the problems of high slurry viscosity, equipment blockage, and low product grade caused by the direct fertilizer production of raffinate acid with a simplified process. Furthermore, it coordinates with the disposal of system waste in monoammonium phosphate production, truly achieving high-value utilization and clean production of all components of wet-process phosphoric acid.

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 the technical field of potato processing equipment, and more specifically, to a potato impurity removal and pulping device. In the potato impurity removal and pulping device provided in this application embodiment, a vertical rotating shaft drives a fan-shaped spreading plate to evenly spread the pulp into a thin layer on the upper surface of a circular screen plate. Combined with the directional cleaning function of a synchronously rotating brush, impurities can move synchronously circumferentially with the brush, preventing them from accumulating on the circular screen plate and clogging the screen holes. Using the above structural design, by integrating a rotating impurity removal mechanism below the crushing chamber, continuous crushing and impurity removal operations are achieved. Furthermore, the crushing and impurity removal operations can be carried out continuously without interruption, and there is no need to stop the machine to clean the circular screen plate during this process, thereby greatly improving the potato pulping efficiency.

The application discloses a kind of water-soluble polyester desizing wastewater-PVA wet spinning wastewater synergic treatment method, by mixing high COD, high alkaline water-soluble polyester desizing wastewater and high salt, high acidic PVA wet spinning wastewater, combine temperature and water-soluble polyester sizing wastewater regulation, adjust the system pH and complementarily provide the required additive between the two, then continue through high density precipitation tank, ozone oxidation treatment, biological aerated filter, high-efficiency fiber filtration, twice reverse osmosis treatment, nanofiltration membrane filtration and frozen crystallization treatment, significantly reduce the COD and salt content in wastewater, obtain the reusable reclaimed water.The application realizes the effective treatment of water-soluble polyester desizing wastewater and PVA wet spinning wastewater without adding acid or base to adjust pH and without adding other additives, reduces the processing cost.

This invention relates to the field of concrete, and more particularly to a novel flocculant specifically for washed sand and its preparation and application methods. The flocculant is prepared via free radical polymerization using unsaturated acids, amide monomers, polyether macromonomers, and asymmetric crosslinking agents as reactants. Based on its pH-responsive characteristics, this flocculant can intelligently switch between flocculant and water-reducing agent: during sand washing, it efficiently flocculates mud and fine powder in wastewater, promoting wastewater recycling; when it remains in manufactured sand and enters the alkaline environment of concrete, the ester bonds in the molecule can hydrolyze and break, degrading the flocculant into polycarboxylic acid fragments with a comb-like structure. This novel flocculant not only eliminates the problems of high water-reducing agent dosage and large slump loss caused by traditional flocculant residues, but the degradation products themselves can also play a dispersing role, helping to reduce the water-reducing agent dosage and improve the slump retention performance of concrete.

A textile treatment composition for reducing environmental odors on textile material, a treated article having the textile treatment composition applied thereon, and a method of reducing environmental odors on a textile material is provided. The textile treatment composition includes a ricinoleate salt and an acrylate binder at effective concentrations to reduce environmental odors, such as smoke, on textile materials.