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Method for production of sugars from biomass

机译:由生物质生产糖的方法

摘要

A process for the production of monosaccharides from biomass comprising cellulose and hemicellulose, the process comprising: adjusting pH of a biomass material to a value below pH 5 by adding inorganic acid; converting all cellulose and hemicellulose into monosaccharides by passing alternating electric current through the biomass, wherein the said step occurs in a monosaccharide production reactor. The biomass conversion into monosaccharides is preferably conducted at a pH range of 4.5-1, particularly 4.5-3.5; preferably at a temperature range of 70-160°C; and preferably at a pressure of 1-6 bara. The frequency of the alternating electric current is preferably in the range of 30-10000 Hz, particularly 50-60 Hz. The inorganic acid is preferably hydrochloric or sulfuric acid. The monosaccharide production reactor may be an ohmic heater. A monosaccharides production reactor comprising at least two electrodes contained within a cylindrical vessel having inlet and outlet ports at opposite ends; wherein one electrode is electrically and mechanically connected with the vessel wall and is a neutral point connected to earth; wherein the second electrode is electrically isolated from the first electrode and is connected to a single phase of an electric power supply is also disclosed.
机译:由包含纤维素和半纤维素的生物质生产单糖的方法,该方法包括:通过添加无机酸将生物质材料的pH调节至低于pH 5的值;通过使交流电通过生物质将所有纤维素和半纤维素转化为单糖,其中所述步骤发生在单糖生产反应器中。生物质向单糖的转化优选在4.5-1,特别是4.5-3.5的pH范围内进行;优选在4.5-3.5之间。优选在70-160℃的温度范围内;并且优选在1-6bara的压力下。交流电流的频率优选在30-10000Hz的范围内,特别是在50-60Hz的范围内。无机酸优选为盐酸或硫酸。单糖生产反应器可以是欧姆加热器。一种单糖生产反应器,包括至少两个电极,该电极容纳在圆柱形容器中,该圆柱形容器在相对端具有入口和出口。其中一个电极与容器壁电气和机械连接,并且是接地的中性点。其中还公开了第二电极与第一电极电隔离并且连接到电源的单相。

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