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  • Xylose[Pentose] Production Line Machinery Equipment

Xylose[Pentose] Production Line Machinery Equipment

Features:
   Xylose [Pentose] The equipment of the production line uses corn cobs and other cellulose straws to produce xylose (D-xylose). The process can be divided into three parts.: Hydrolysis, refining and extraction.hydrolysis is to hydrolyze the pentosans contained in corncobs and other cellulose straws through acid-catalyzed hydrolysis to obtain a monomolecular pentose hydrolysate, and the pentoses are mainly xylose.   Refining is to remove impurities such as suspended solids, organic colored subs

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Xylose[Pentose] Production Line Machinery Equipment
   Xylose [Pentose] The equipment of the production line uses corn cobs and other cellulose straws to produce xylose (D-xylose). The process can be divided into three parts.: Hydrolysis, refining and extraction.hydrolysis is to hydrolyze the pentosans contained in corncobs and other cellulose straws through acid-catalyzed hydrolysis to obtain a monomolecular pentose hydrolysate, and the pentoses are mainly xylose.
  Refining is to remove impurities such as suspended solids, organic colored substances, acid catalysts, viscous substances, and ash contained in the hydrolyzate to obtain a relatively pure aqueous solution of pentose.
  Extraction is the method of concentrating and crystallization to make xylose precipitate from the aqueous solution in the form of crystals and separate it from other pentoses at the same time, thereby obtaining high-purity crystalline xylose products.
  1. Hydrolysis of xylose [pentose] production line machinery and equipment: plant fiber raw materials are mainly composed of cellulose, hemicellulose, lignin and ash. Among them, hemicellulose is plant cell wall glycan. The monosaccharides that make up the hemicellulose glycan chain are mainly: xylose, glucose, mannose, galactose, arabinose, rock sugar and rhamnose.
  The plant fiber raw materials that can be used to extract xylose must meet two requirements: the hemicellulose content is high and the monosaccharide of the hemicellulose polysaccharide chain is mainly xylose.
  The plant fiber raw materials used in the industrialized production of xylose are corn cobs, corn stalks, sunflower stalks, bagasse and birch papermaking waste liquid. Among them, corn cobs are the best. In our country, there are only two raw materials: corn cob and bagasse.
The approximate composition of  corn cob is cellulose 35%, hemicellulose 39%, lignin 19%, ash 2%, and others 5%. The monosaccharides of the polysaccharide chain in the hemicellulose contained in the corn cob are mainly xylose, which accounts for more than 80%, followed by arabinose, which accounts for about 10%, the combined amount of xylose and arabinose accounts for more than 95%, and the rest are others. Monosaccharide. Therefore, corncobs are most suitable for extracting xylose.
        2. Xylose [pentose] hydrolysate refining of production line machinery and equipment: the hydrolysate obtained after corncob hydrolysis contains a large number of non-sugar impurities, mainly solid suspended matter (corncob crumbs or entrainment), sulfuric acid ( The catalyst added in the hydrolysis process), organic acids (the decomposition products of organic matter in the high-temperature hydrolysis process), organic colored impurities (the coking synthesis products or decomposition products of the organic matter in the high-temperature hydrolysis process), organic macromolecular adhesive substances (super macromolecular organic matter does not Completely hydrolyzed product) and ash (inorganic salt impurities dissolved in acid hydrolysate).
The non-sugar impurities contained in the hydrolysate must be removed to obtain a pure sugar solution. The presence of non-sugar impurities not only affects the quality of the final product, but may also affect the crystallization process of xylose, and even cause the xylose to fail from the syrup smoothly. Crystallized or poor crystal shape. The process of removing the non-sugar impurities contained in the hydrolyzed liquid is the refining process of the hydrolyzed liquid, or the purification process.
  The main methods of refining the hydrolysate are: flash evaporation, filtration, neutralization, activated carbon decolorization, vacuum evaporation and ion exchange.
  3. Xylose [Pentose] Extraction of crystalline xylose from production line machinery and equipment:  After the hydrolysate is purified, most of the non-sugar impurities are removed, and a clean xylose solution is obtained. But it still contains glucose, arabinose, galactose, ribose and erythopentulose. The crystallization of xylose first is to extract xylose from the sugar liquid in the form of crystals to obtain a solid product that is easy to sell, and the second is to further separate xylose from miscellaneous sugars to obtain pure xylose products. The extraction of crystalline xylose is the final process of manufacturing xylose, including five steps of concentration, crystallization, centrifugal separation, drying and packaging.
 Xylose [Pentose] is used as a by-product of the machinery and equipment of the production line. The cellulose straw contains three major elements, cellulose, hemicellulose and lignin. The production of xylose uses the hemicellulose pentose part, which is used as cellulose. Six ponds are not used, so the wood pond residue from which xylose has been extracted is rich in cellulose, which is then hydrolyzed into six-carbon monosaccharides by cellulase, and is fermented to produce cellulosic ethanol, also called bioethanol, or cellulosic butanol. Called bio-butanol, lignin is then made of polyurethane, and the avenue is comprehensively used to eat and squeeze the straw to maximize the benefits.
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