Abstract:
A method of recycling engineered wood panels such as fibre board recovers the constituent wood fibres for re-use as a substitute for virgin wood fibre. The wood panels are shredded and mixed with water to form a slurry, which is then heated by passing an electric current through the slurry to weaken the bonding between the wood fibres. The heating may be carried out above atmospheric pressure. After heating, the slurry may be rapidly depressurized, e.g. by spraying through a nozzle, to dry and separate the fibres. Apparatus is described for carrying out the method as a continuous process.
Abstract:
The present invention relates to a method for pre-treating biomasses, more particularly for pre-treating biomasses intended for a biorefinery or similar facility for producing biofuels. The method for pre-treating biomasses according to the invention comprises a step of shredding the biomasses (40) and, upstream of said shredding step, a step of removing foreign bodies (30) from said biomasses, and, upstream or downstream of said shredding step (40), a step of soaking said biomasses (50). The present invention further relates to a plant for pre-treating biomasses (100) capable of implementing the above-described method, comprising a shredding station (140) for shredding biomasses, and, upstream of said shredding station, a station for removing foreign bodies (130) from said biomasses and, downstream or upstream of the shredding station (140), a soaking station (150) for soaking biomasses.
Abstract:
A process for producing polyols from a low viscosity slurry comprising a thermally treated ligno-cellulosic biomass which has been subjected to a fiber shives reduction step is provided. Specifically, a continuous process for catalyzing the formation of polyol products, such as ethylene glycol and propylene glycol, from the low viscosity slurry is provided.
Abstract:
The present invention provides practical methods for the industrial production of fibre reinforced composites utilizing wastes from the intensive agriculture of musa genus, bananas, plantains, abaca etc. These methods describe ways for the extraction of the fibres from the dried pseudostem´s ligno-cellulose matrix and using the ligno-cellulose matrix in turn to produce a reactive adhesive resin that can encapsulate the obtained fibres to produce a fibre reinforced composite material which can be biodegraded by microorganisms.
Abstract:
Fibre furnish for use in the manufacture of paper and paper-based products, the fibre furnish consisting essentially of plant petiole tissue, wherein substantially longitudinally aligned petiole fibres have been cut generally laterally to form 5 fibres with a fibre length distribution such that at least 95 % of the fibres have substantially the same predetermined fibre length.
Abstract:
Various processes are disclosed for producing nanocellulose materials following steam extraction or hot-water digestion of biomass. Processes are also disclosed for producing nanocellulose materials from a wide variety of starting pulps or pretreated biomass feedstocks. The nanocellulose materials may be used as rheology modifiers in many applications. Water-based and oil-based drilling fluid formulations and additives are provided. Also, water-based and oil-based hydraulic fracturing fluid formulations and additives are provided. In other embodiments, polymer-nanocellulose composites are provided.
Abstract:
Um ein Verfahren zum Aufbereiten von Fasern für die Papierherstellung aus einem faserhaltigen Material, insbesondere aus Altpapier, so zu verbessern, dass eine Verkürzung der aus dem Fasermaterial vereinzelten Fasern auf ein Minimum reduziert ist, wird vorgeschlagen, dass das faserhaltige Material zum Aufschließen feucht bereitgestellt und unter einer kontinuierlichen Schlageinwirkung trocken aufgeschlossen wird.
Abstract:
The present invention relates to a method for the production of cellulose from a waste material, the method comprising the steps of: providing a waste material comprising organic material; homogenising the waste material; passing steam through the homogenised waste material to hydrolyse at least a portion of the waste material; and retrieving cellulose from the hydrolysed waste; wherein the hydrolysis is catalysed by the addition of urea or a urea derivative.
Abstract:
The present disclosure relates to a comminution apparatus including a rotational reducing unit that is rotatable about an axis of rotation. The rotational reducing unit includes a plurality of material reducing components that are mounted to a carrier. The material reducing components are rotated by the carrier in a first direction about the axis of rotation. The comminution apparatus also includes a screen at least partially surrounding the rotational reducing unit. The screen defines a plurality of sizing slots that have slot lengths and slot widths. The slots are elongated along the slot lengths such that the slot lengths are longer than the slot widths.