摘要:
The presently disclosed subject matter relates to an industrial system for processing various plant materials to produce marketable materials. Particularly, the system integrates subcritical water extraction technology and includes a pre-processing module and a two-stage extractor (processing module) with constant control of temperature, pressure, and/or residence time. In some embodiments, the final product of the disclosed system can include feedstock constituents for biofuel production (sugars and/or oil), biochar, raw materials for various industries (such as pulp for manufacturing paper or cellulose for use in various industries). The disclosed system can be modular or non-modular, stationary or mobile, and can include prefabricated elements with programmed automatic or manual operation so that it can be easily moved and/or assembled on site.
摘要:
A textile recycling method receives textile-waste-to-be-recycled, sorts the waste to isolate cellulose-containing articles from non-cellulose-containing articles, and re-sizes at least some of the cellulose-containing articles to create feedstock. The feedstock is processed in a cellulose solvent reactor, which has at least one ionic liquid. The ionic liquid dissolves intermolecular cellulose bonds of the feedstock to create a spinning dope. Cellulose fibers dissolved in the cellulose-bearing spinning dope solution are extruded in a cellulose coagulation bath reservoir to reconstitute at least some of the cellulose fibers, and the reconstituted fibers are wet-spun to form a continuous cellulose thread that is commercially indistinguishable from virgin fiber thread. Synthetic fiber material is vacuum-extracted or mechanically extracted from the cellulose-bearing solution and recycled into a continuous synthetic thread. Original color of textile-waste-to-be-recycled can be retained or removed, and new color can be added.
摘要:
The present invention refers to the separation of cellulose pulp into distinct fractions with different draining and morphological characteristics, as well as the use of part of these fractions for the production of nanocellulose. The process in reference combines the unitary operations of fiber separation, thickening to a certain consistency, draining and drying of the cellulosic pulp with the high drainage ability and production of nanocellulose from high primary fines content pulp. The process may consider any cellulosic pulp fiber derived from short or long fiber woods such as Eucalyptus, Corymbia, Birch, Aspen, Pinus, recycled fibers, etc., their residues such as bark, sawdust, etc.
摘要:
The present invention relates to an improved method and device for treating biomass in which thermally treated biomass is discharged from a pressurized reactor and introduced into a blow tank and then a flash tank, wherein the absolute pressure in the blow tank is maintained above atmospheric pressure and the absolute pressure in the flash tank is maintained below atmospheric pressure. The slurry of biomass separated in the flash tank is then enzymatically treated. The heat from the thermally treated biomass is recovered from the latent heat of a vaporous aqueous stream withdrawn from the blow tank.
摘要:
The instant disclosure provides a continuous horizontal digester including a cylindrical pressure cooker capable of rotating by taking its central axis as an axis; a charging apparatus disposed at one end of the cooker which is communicated with an inner cavity of the cooker and can seal the cooker; and a discharging device disposed at the other end of the cooker and communicated with the inner cavity of the cooker, the discharging device is located on the central axis of the cooker. The continuous horizontal digester further includes a cooking device configured to cook the materials in the cooker.
摘要:
In an outlet flow control arrangement (1) arrangeable to control a flow of material through an outlet (2) with a predetermined diameter arranged at an end of a pressurized processing container (3), the outlet flow control arrangement (1) comprises an adaptor unit (4) configured so that a cross-section of a flow into the adaptor unit (4) is reduced as compared to a cross-section of the outlet (2), to enable the adaptor unit (4) to control and center a flow of processed material out of the processing container (3) and through the outlet (2) into a discharge pipe (5).
摘要:
The invention discloses a method of continuous cooking cellulose fibrous material in a digester, said digester having a top and a bottom. The method of the invention comprises the steps of:—feeding a slurry comprising cellulosic fibrous material and cooking liquor into the top the digester,—feeding a first washing liquor into the bottom portion of the digester, which first washing liquor moves counter currently up through at least part of the digester,—removing pulp from the bottom of the digester,—feeding a second washing liquor into the center of the digester at least at the level of a first screen section,—feeding a third washing liquor into the center of the digester at the level of a second screen section, and—withdrawing the cooking liquor and the washing liquors from the first screen section and from the second screen section, which first screen section is arranged in a lower part of the digester and which second screen section is arranged below said first screen section. Thus, in accordance with the invention, a third washing liquor is added to the center of digester at the level of an additional, second extraction screen section arranged in the lower part of the digester. The method makes it possible to increase the production rate in the digester but still maintain or even increase the washing efficiency.
摘要:
A solid/fluid separation module and pretreatment apparatus and method enables pretreatment of biomass at high temperature and pressure with the ability to vary residence and processing times.
摘要:
A hydraulic drive assembly for a large pre-existing pressurized digester vessel and a method of installation of the hydraulic drive assembly have been conceived. Such a device includes a stub shaft which has a lower end and an upper end. The lower end engages with a hydraulic drive and the upper end is coupled to a drive shaft. The coupling further includes a top coupling and a bottom coupling. The top coupling is coupled to the drive shaft, and the bottom coupling is coupled to the stub shaft. A drive support bracket is attached to the hydraulic drive and then attached to the drive support bracket by at least one sole plate that is fixed to a foundation. The hydraulic drive assembly installation method is utilized when removing an electric motor and mechanical transmission device and replacing it with a hydraulic drive assembly.
摘要:
The withdrawal screen section is for impregnation of chips during the manufacture of chemical pulp. Chips are steamed and impregnated in a low pressure impregnation vessel using pressurised hot spent cooking liquor BL. The spent cooking liquor produces most of the steam BLST, necessary for steaming the chips. To reduce the need for adding fresh steam for chip steaming is a first withdrawal section in the impregnation vessel modified to be used both as a flash tank for warm pressurised wash filtrate and improved wash-out feature for the spent impregnation liquid behind the screen in the withdrawal section. The withdrawal volume is arranged with an upper part located above the liquid level LIQLEV of the impregnation vessel. Additional pressurised warm wash liquor REC1 is added to the withdrawal volume and flashed off steam is led in a steam duct to the chip volume above the liquid level.