2628results about "Reed/straw treatment" patented technology

A method to produce on a commercial scale, high aspect ratio cellulose nanofilaments (CNF) from natural lignocellulosic fibers comprises a multi-pass high consistency refining (HCR) of chemical or mechanical fibers using combinations of refining intensity and specific energy. The CNF produced represents a mixture of fine filaments with widths in the submicron and lengths from tens of micrometers to few millimeters. The product has a population of free filaments and filaments bound to the fiber core from which they were produced. The proportion of free and bound filaments is governed in large part by total specific energy applied to the pulp in the refiner, and differs from other cellulose fibrillar materials by their higher aspect ratio and the preserved degree of polymerization (DP) of cellulose, and are excellent additives for the reinforcement of paper, tissue, paperboard and the like. They display exceptional strengthening power for never-dried paper webs.

A shredder includes a housing having a throat for receiving at least one article to be shredded, and a shredder mechanism received in the housing and including an electrically powered motor and cutter elements. The shredder also includes a detector that is configured to detect a thickness of the at least one article being received by the throat, and a controller that is configured to operate the motor to drive the cutter elements to shred the at least one article and to set a flutter threshold higher than the predetermined maximum thickness threshold, if the detected thickness is less than a predetermined maximum thickness threshold. The controller is also configured to thereafter continuously detect the thickness of the at least one article being inserted into a throat of the shredder; and to perform a predetermined operation responsive to the thickness detector detecting that the thickness of the at least one article is greater than the flutter threshold.

An improved brush cutter having an upper feed control member with stop, forward, neutral, and reverse positions also has a lower feed stop member with selectable sensitivity. Another aspect of the invention is to predict the feed roller shutoff point according to the rate of engine deceleration. According to another aspect, when the feed rollers stop feeding material into the cutters, to overcome drag on the cutters, a controller stops the feed rollers and then reverses them for a short time, and then reverses the rollers again if the problem is still present. To prevent jamming, a pressure switch senses when oil in a hydraulic motor system for rotating the feed rollers is too high and the controller momentarily reverses the feed rollers and then causes them to go forward, a cycle which can occur several times until the feed rollers are no longer stalled. By another aspect of the invention, the controller senses characteristics of the brush cutter and chooses an operating system based on the characteristics sensed. The controller can also sense if the brush chipper has not been used for a predetermined period of time and automatically reduce the idle speed of the engine until the brush chipper is used again, and then automatically return the engine to a normal idle speed before the feed rollers will pull brush into the brush chipper.

A method is disclosed for generating useful chemical intermediates from biomass using a novel pyrolysis reactor that utilizes the inherent thermal properties of carbon under compression as the biomass is subjected to sequential or concurrent temperature ramps. The ramps are sufficient to volatilize and selectively create different components, while the pressure application aids the selective decomposition of the biomass.

A refiner disc and segment for a rotary disc fiber refiner which has a plurality of radial fields each having an angular extent no greater than 30° and preferably no greater than 22° for reducing the amplitude and duration of load swings that take place during pumping and holdback cycles. Each field has a refining zone with a refiner groove and a refiner bar and a second zone disposed radially outwardly of the refining zone that changes the direction of flow of stock to reduce stock flow momentum and magnitude of the load swings. Each field can have a third zone radially outward of the second zone that further changes the direction of flow of stock and an infeed zone radially inwardly of the refining zone. If desired, a zone that includes a breaker bar can be disposed radially inwardly of the infeed zone. Where the disc is segmented, the segment has at least three fields. In one preferred embodiment, the segment has at least four fields which reduces the duration and magnitude of load swings by at least 40% thereby reducing refiner vibration and wear while advantageously increasing consistency of pulp quality and throughput. The disc and segment are capable of bi-directional operation without loss of efficiency, quality, and throughput.

A system and method for thermomechanical refining of wood chips comprises preparing the chips for refining by exposing the chips to an environment of steam to soften the chips, compressively destructuring and dewatering the softened chips to a solids consistency above 55 percent, and diluting the destructured and dewatered chips to a consistency in the range of about 30 to 55 percent. The destructuring partially defibrates the material. This diluted material is fed to a rotating disc primary refiner wherein each of the opposed discs has an inner ring pattern of bars and grooves and an outer ring pattern of bars and grooves. The destructured and partially defibrated chips are substantially completely defibrated in the inner ring and the resulting fibers are fibrillated in the outer ring. The compressive destructuring, dewatering, and dilution can all be implemented in one integrated piece of equipment immediately upstream of the primary refiner, and the fiberizing and fibrillating are both achieved between only one set of relatively rotating discs in the primary refiner.

The invention provides a preparation method of a reinforced straw fiber composite material. The preparation method comprises the following steps: 1) pre-processing straw fibers; 2) modifying the straw fibers; 3) mixing the straw fibers; 4) thermally pressing and molding; and 5) packaging products. The preparation method disclosed by the invention has the advantages of being simple, reliable, and easy to implement; the prepared composite material is high in utilization rate of straw fibers, can be regenerated and degraded to become an environment-friendly and energy-saving ideal material, and is recycled, so that an industrial chain of circular economy is formed. The reinforced straw fiber composite material is good in mechanical performance, excellent in performance, low in cost, wide in use, and capable of being used to the industry fields such as buildings, home furnishing and cars.

The present invention relates to processes for enhancing a refiner's production rate and / or reducing the specific energy consumption for a freeness target through the use of lubricant(s) or carrier(s) / frictionizer(s), respectively.

The invention relates to a formula and production method for preparing a peach wheat straw dye. The formula takes roses, lichenes, tulipa primulina, white alum, an iron ion compound solution and mineral water as main raw materials. The main process flow of the production method comprises the following steps: selecting materials; cutting the materials; drying; soaking; carrying out hot stewing; mixing; depositing; and dyeing to obtain a finished product. The formula and production method disclosed by the invention are used for preparing the peach wheat straw dye which is purely natural, pollution-free, green and environmental-friendly without toxic and side effects on human bodies and is prepared from pure natural plants.

The invention discloses a formula and a production method for preparing a deep yellow wheat straw dye. Gamboge tree resin, grass bouquet box, amur corktree, madder, senna leaf, alumen, a ferric ion compound solution and spring water are taken as main raw materials. The production method comprises the following main technological processes: sorting, cropping, drying, soaking, hot boiling, mixing, participating, dyeing, and forming a product. According to the formula and the production method for preparing the deep yellow wheat straw dye, the deep yellow wheat straw dye prepared from pure natural plants is pure natural, free of pollution, green and environment-friendly, and free of toxic and side effects on a human body.

A process for making nanofibers includes preparing a fluid suspension of fibers, shear refining the fibers to create fibrillated fibers, and subsequently closed channel refining or homogenizing the fibrillated fibers to detach nanofibers from the fibrillated fibers. The shear refining of the fibers in the fluid suspension generates fiber cores having attached nanofibers. The closed channel refining or homogenizing of the fibrillated fibers is initially at a first shear rate and, subsequently, at a second, higher shear rate, to detach nanofibers from fiber cores and to create additional nanofibers from the fiber cores. The fiber suspension may flow continuously from the shear refining to the closed channel refining or homogenizing, and include controlling the rate of flow of the fiber suspension from the shear refining to the closed channel refining or homogenizing.

The invention discloses a formula and a production method for preparing a dark olive green wheat straw dye. Nuphar pumilum, digitalis flower, miscanthus sinensis, alumen, a ferric ion compound solution and spring water are taken as main raw materials. The production method comprises the following main technological processes: sorting, cropping, drying, soaking, hot boiling, mixing, participating, dyeing, and forming a product. By adopting the formula and the production method for preparing the dark olive green wheat straw dye, the dark olive green wheat straw dye prepared from pure natural plants is pure natural, free of pollution, green and environment-friendly, and free of toxic and side effects on a human body.

The present invention is production process of high density charred bamboo material, and solves the problems of high pressure made shaped material in inner stress, hardness, strength, color and power consumption. The production process includes the following steps: 1. making bamboo sheet without outmost layer and inside yellow layer; 2. cutting or rolling bamboo sheet; 3. charring inside charring tank at the pressure of 2-3 MPa and temperature of 100-300 deg.c for 2-3 hr; 4. soaking the charred bamboo material in glue; and 5. molding in mold at high pressure to cure and form. The high density charred bamboo material may be used in producing bamboo board or strip.

The invention relates to a formula and production method for preparing a yellow wheat straw dye. The yellow wheat straw dye is mainly prepared from locust tree flower, garcinia, white alum, an iron ion compound solution and mineral water. The production method mainly comprises the following steps: material selection, cutting, drying, immersion, hot boiling, mixing, precipitation and dyeing to obtain the finished product. The yellow wheat straw dye prepared from purely natural plants is purely natural, green and environment-friendly, and has the advantages of no pollution and no toxic or side effect on the human body.

The invention provides a formula and a production method for preparing silver red wheat straw dye. The formula uses safflower, lignum sappan, alum, iron ion compound solution and mineral water as main raw materials. The production method mainly comprises the steps of selecting materials; cutting materials; baking; immersing; cooking; mixing; precipitating; dyeing to obtain the finished product. According to the formula and the production method, the silver red wheat straw dye is pure nature, non-pollution, green and environment-friendly, does not have toxic or side effect to a human body, and is prepared by using pure nature plants.

The invention relates to a method for manufacturing a bamboo macrofiber composite material. Bunchy bamboo fibers of which the green and yellow are removed are taken as raw materials and dipped with awater soluble phenol formaldehyde adhesive, and the production steps comprise material preparation (comprising the preparation of bamboo macrofiber reinforcement and a water soluble phenol formaldehyde resin matrix), adhesive dipping, extraction, warm-pressing, curing and post curing. The method has the advantages that: (1) the method has reasonable process, strong production continuity, high efficiency, low energy consumption, and no environmental pollution; (2) the manufactured bamboo macrofiber composite material has no mold and no crack, and has the density between 0.9 and 1.3g / cm<3>, thehardness between 60 and 150MPa, the static bending strength between 140 and 160MPa, the water-absorbing expansion rate between 0.3 and 2 percent, the surface wear resistance between 0.04 and 0.09g / 100r, and the formaldehyde emission between 0.1 and 0.4mg / L; and (3) the invention provides a more positive production technique for reasonably utilizing the bamboo resources, so that the reconstituted bamboo timber application prospect is better.

A refining plate for refining lignocellulosic material including: a radially outer peripheral edge and a substrate surface; a refining zone having a plurality of substantially radially disposed bars and grooves between the bars, wherein the bars protrude upward from the substrate surface and the grooves each have a groove width, and a steam channel traversing the bars and grooves of the refining zone, wherein the steam channel has a radially outer end radially inward of the outer peripheral edge of the plate and the steam channel has a width substantially greater than the groove width.

The invention discloses an environment-friendly craft furniture processing method. By processing trunks, branches and roots with conditioning fluid, softening, disinfecting and sterilizing of raw materials are realized and anti-ageing and physical performances of the raw materials are improved. By the processing method, utilization rate of the raw materials can be increased by 8-12%, and by high-temperature carbonization, disinfection and prevention of molding and being damaged by worms can be further realized.

The invention relates to a preparation method for a wood-bamboo reinforced resin composite material based on high-pressure densification, and belongs to the field of composite materials and artificialboards. The preparation method for the wood-bamboo reinforced resin composite material based on the high-pressure densification comprises the steps that lignin and hemicellulose are partially removedfrom wood veneers, wood boards or bamboo sheets by a chemical reagent, the chemical reagent is removed by water, and the water is replaced by ethanol or acetone; the wood veneers, the wood boards orthe bamboo sheets with lignin and hemicelluloses removal are put into a mixed solution of a resin system or a resin solution and a flame retardant, a diluent and / or a toughening agent additive, or sequentially put into the resin system or the resin solution and the mixed solution of the additive, so that the resin and additive penetrate into cells and cell pores of the wood or the bamboo; and semi-finished products are assembled into blanks, and high-pressure densification and high-temperature curing are carried out to prepare the high-strength composite material. The preparation method for the wood-bamboo reinforced resin composite material based on the high-pressure densification overcomes the stress concentration problem caused by the pores and the like in an existing artificial board,and the prepared novel structural composite material has good mechanical properties and flame retardancy, so that the application of wood in the structural fields of airplanes, high-speed trains, buildings and the like are greatly promoted.

The present invention 10 discloses a trash and garbage processing device which may be sized to fit into a kitchen of a home or sized to be used in a multi-family dwelling. The present invention 10 has a plurality of sorting compartments 12 disposed on the top thereof for receiving various types of waste products. There is a compartment for shrinking and palletizing plastics, another compartment for shredding paper and cardboard 58, another compartment for perishable organic waste 48, a crushing compartment for crushing cans and glass / plastic products 54 and a disposal compartment 60 for non-degradable, solid waste such as bones and batteries. After the various types of waste materials are processed, they are transferred to a conduit to a recycling bin 32 for temporary storage and then thereafter removed from the recycling bin and transferred for final disposal. A paper cutting blade 26 is provided for cutting large pieces of cardboard or paper to proper size for placement into a paper shredding compartment 58. The individual openings 12 of the compartments have lids 14 thereon which have safety locks thereon 22 / 34 to prevent children from tampering therewith. A plastic handling compartment also may be coated with a non-stick material and the safety locks may use a touch digital keypad as commonly used. Further, the crusher unit may be equipped with a mechanism for determining the UPC codes of the materials.

A method for the preparation of fiber stock for the production of paper or cardboard, including the steps of:a) Supplying fibers in the form of a suspension that has a predetermined solids content,b) Loading of the fibers with a precipitation product, without refining the stock,c) Refining of the fibers after completion of the loading process, in order to improve the freeness value and / or to alter the fiber characteristics, andd) Transporting of the fiber stock suspension in direction of the paper machine.

The present invention relates to processes for enhancing a refiner's production rate and / or reducing the specific energy consumption for a freeness target through the use of lubricant(s) or carrier(s) / frictionizer(s), respectively.