玉米芯产糠醛残渣的热解利用分析

Pyrolysis Analysis of Furfural Residue from Corncob

在极低水固比的稀硫酸/甲苯体系(简称ELW体系)中,玉米芯半纤维素可快速高产糠醛。为了构建经济高效的生物炼制体系,玉米芯ELW残渣的利用亟待研究。以真实糠醛厂渣为对照,本文综合比较了ELW渣和糠醛厂渣作为固体燃料进行热解(常规热解和快速热解)并高值化利用的潜力。研究发现,ELW渣和糠醛厂渣均有一定的碳化;ELW渣的常规热解产物与糠醛厂渣类似;而其快速热解的左旋葡聚糖产率明显优于玉米芯和糠醛厂渣。

In the dilute sulfuric acid/toluene system with extremely low water/solid ratio(short in ELW system),hemicellulose from corncob was converted into furfural with high yields in a short time.In order to establish an economic and effective biorefinery system,the use of ELW residues needed to study.Taking the residues from furfural plant(short in plant residue)as contrast,the potential of ELW residue and plant residue as solid fuels for pyrolysis(conventional pyrolysis and rapid pyrolysis)and high value utilization were comprehensively compared.It was found that both the ELW residue and plant residue had a certain degree of carbonization.In addition,the high calorific value and conventional pyrolysis products of ELW residue were similar to plant residue;while levoglucosan yields from ELW residue by rapid pyrolysis were much higher than corncob and plant residue.