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占木材组分和其他木质纤维原料15%～40%的木素是一种尚未开发且具有可持续性的化学品原料的重要资源。化学浆厂已能提供大量木素,仅在新西兰,年产量就达到36万t。同时,以木材或其他木质纤维为原料的生物乙醇工厂也可提供大量额外的木素。如果这些在特殊过程中产生的木素可转化为低分子质量的化工产品,这将为制浆厂和生物乙醇工厂提供额外的收入来源,并且可将其作为当前石油衍生物的可持续替代品。文中主要介绍了将木素转化为低分子质量化工产品或燃料附加品过程中使用的工艺方法、有利因素和存在的问题。
Lignin, which represents 15% to 40% of the wood components and other lignocellulosic feedstocks, is an important source of unsustainable and sustainable chemical feedstock. Chemical pulp mill has been able to provide a large number of lignin, in New Zealand alone, the annual output reached 360,000 t. At the same time, bioethanol plants, which use wood or other lignocelluloses as raw materials, can also supply large amounts of extra lignin. If these lignin produced in a particular process can be converted into low molecular weight chemicals, this will provide additional sources of revenue for pulp mills and bioethanol plants and may serve as a sustainable alternative to current petroleum derivatives . This paper mainly introduces the process, advantages and problems in converting lignin to low molecular weight chemical products or fuel additives.