木质素纤维素基生物质的热力学性质计算的新方法  

Novel Approach for Calculating Thermophysical Properties of Lignocellulosic Biomass

作　　者：常先锋 李珍珍 Chang Xianfeng;Li Zhenzhen(Jiangsu Province Chemical Engineering Design Institute Co.,Ltd.,Nanjing 210024,China)

机构地区：[1]江苏省化工设计院有限公司,江苏南京210024

出　　处：《广东化工》2022年第24期25-28,共4页Guangdong Chemical Industry

摘　　要：呈现了一种计算木质素纤维素基生物质的热力学性质的新方法。相比基于生物质的工业分析、元素分析和硫分析的传统计算方法,本方法基于生物质的化学组成和各组成的性质进行计算生物质的热力学性质。木质素纤维素基生物质主要由纤维素、半纤维素(包括半乳聚糖、甘露聚糖、木聚糖和阿拉伯聚糖)和木质素。本方法把纤维素、半纤维素和木质素模拟成聚合物,通过聚合物中每一个链段的物性参数和组成计算其热力学性质。每一个链段的物性参数通过对纤维素、半纤维素、木质素及其对应单体的物性数据进行回归而获得。通过本方法计算的生物质的热力学性质与实验数据具有良好的一致性。A novel approach is presented to calculate the thermophysical properties of lignocellulosic biomass. In contrast to the conventional approach by means of the proximate, ultimate and sulfur analysis of biomass, the new approach calculates the thermophysical properties of biomass from the compositions of the chemical constituents and the properties of the constituents. Lignocellulosic biomass is mainly composed of cellulose, hemi-cellulose(including galactan, mannan,xylan and arabinan) and lignin. This approach models the cellulose, hemi-cellulose and lignin as polymers and their properties are calculated by the parameters of segments and the segment composition. The parameters of segments are obtained from regressing against the data for cellulose, hemi-cellulose, lignin and their corresponding monomers. The properties of biomass calculated by this approach are in a qualitative agreement with the experimental data.

关 键 词：木质素 纤维素 生物质 热力学性质 聚合物 链段 PC-SAFT 

分 类 号：TQ[化学工程]