木质纤维生物质多级资源化利用关键技术及应用

本项目由北京林业大学、中南林业科技大学、山东龙力生物科技股份有限公司、华南理工大学等四家单位在国家科技部“十二五”科技支撑计划、自然科学基金委重大国际合作、教育部科技重大项目等资助下，通过十五年产学研联合攻关，从根本上解决了木质纤维生物质利用单一资源化、原料严重浪费、环境重度污染的技术难题，实现了木质纤维生物质全资源化利用技术的重大突破与创新，推动了制浆造纸、生物质炼制及林产工业产业结构的重大变革与行业科技的跨越式发展。 主要发明点及技术内容：1）发明了木质纤维生物质抽提物溶出调控技术，系统解析了木质纤维生物质抽提物组分及活性成分，阐明了抽提物分子溶出规律，研发出抽提物活性分子系列产品，其中绿原酸纯度高达99.8%。2）发明了木质纤维生物质细胞壁组分拆解技术，阐明了细胞壁三大素之间的分子镶嵌机理及解离机理，定量解译了三大素的结构特征，创建了工程化水热耦合稀碱处理新技术，研发出超高纯度低聚木糖（>97%）、阿拉伯糖（>98.5%）、高纯度木质素（>94%）等产品，纤维素转化率提升到88%以上。3）发明了生物质木质素高强度耐候胶黏剂制备技术，以定位定量活化的木质素、苯酚、甲醛等为主要原料，采用多步共聚等技术，研制出高强度耐候木质素基酚醛树脂胶黏剂，其胶合成本与E0级脲醛树脂在同一水平上，木质素对苯酚替代率可达60%，甲醛释放量远低于E0级限量值，实现了工业木质素高效资源化利用。4）创建了木质纤维生物质多级资源化利用关键技术体系，通过集成以上三项发明技术，优化工艺，实现了生物质多级资源化高效利用，创制了绿原酸、高纯度木质素、超高纯度低聚木糖及阿拉伯糖、木质素基酚醛树脂胶黏剂、耐候胶合板等系列生物质产品，实现了木质纤维生物质资源最大效益化利用，产品集高品位、高附加值、高资源化等优势于一体，主要技术指标达到同类产品国际领先水平。

This project was supported by the 12th Five-Year National Science and Technology Support Program of the Ministry of Science and Technology of China, Major International Cooperation Project of the National Natural Science Foundation of China, Key Science and Technology Projects of the Ministry of Education of China, etc., and implemented by four institutions including Beijing Forestry University, Central South University of Forestry and Technology, Shandong Longli Bio-Technology Co., Ltd. and South China University of Technology through 15 years of joint production-education-research collaboration. It fundamentally solved the technical challenges of single-resource utilization of lignocellulosic biomass, severe raw material waste and heavy environmental pollution, achieved major breakthroughs and innovations in full resource utilization technology of lignocellulosic biomass, and promoted substantial transformations in the industrial structure of pulp and paper, biomass refining and forest product industries, as well as leapfrog development of industry-related science and technology.

Main invention points and technical contents:
1) Invented the extraction and dissolution regulation technology for lignocellulosic biomass. This technology systematically analyzed the components and active ingredients of extracts from lignocellulosic biomass, clarified the molecular dissolution rules of extracts, developed a series of active extract products, among which the purity of chlorogenic acid reached 99.8%.
2) Invented the cell wall component disassembly technology for lignocellulosic biomass. It clarified the molecular embedding and dissociation mechanisms among the three major cell wall components (cellulose, hemicellulose and lignin), quantitatively interpreted the structural characteristics of the three components, established a new engineered hydrothermal coupled dilute alkali treatment technology, developed products such as ultra-high purity xylooligosaccharides (>97%), arabinose (>98.5%) and high-purity lignin (>94%), and increased the cellulose conversion rate to over 88%.
3) Invented the preparation technology of high-strength weather-resistant lignin-based adhesives from biomass. Using targeted and quantitatively activated lignin, phenol, formaldehyde and other main raw materials and adopting multi-step copolymerization and other technologies, it developed high-strength weather-resistant lignin-based phenolic resin adhesives. The bonding cost of these adhesives is at the same level as that of E0-grade urea-formaldehyde resin, the replacement rate of phenol by lignin can reach 60%, and the formaldehyde emission is far lower than the E0-grade limit value, realizing efficient resource utilization of industrial lignin.
4) Established a key technology system for multi-level resource utilization of lignocellulosic biomass. Through integrating the above three invented technologies and optimizing the process, it realized efficient multi-level resource utilization of biomass, developed a series of biomass products including chlorogenic acid, high-purity lignin, ultra-high purity xylooligosaccharides and arabinose, lignin-based phenolic resin adhesives, weather-resistant plywood and others. It realized maximum benefit utilization of lignocellulosic biomass resources, and the products integrate the advantages of high grade, high added value, high resource utilization and others, with its main technical indicators reaching the international leading level among similar products.

搜集汇总

背景与挑战

背景概述

该数据集总结了木质纤维生物质多级资源化利用的关键技术及应用，通过产学研联合攻关实现了全资源化利用，包括抽提物调控、细胞壁拆解和胶黏剂制备等创新技术，技术指标达到国际领先水平。数据集发布于2021年，属于植物学领域，涉及减排降碳等关键词，数据量较小，为完全公开共享。