摘要
用热重分析法和热解气相色谱质谱联用技术（Py-GC／MS）对蔗渣及经亚临界CO2处理和纤维素酶预处理后的残渣热解行为进行了研究，分析了原料及预处理残渣在不同升温速率下的热化学特性及在600℃下热裂解产物。结果表明，蔗渣原料的热失重区间在200～400℃，预处理残渣的热失重区间在200～600℃。亚临界C02处理和复合纤维素酶预处理很好地除去了蔗渣原料中碳水化合物成分，其热解产物中，源于碳水化合物的乙酸、糠醛、D-阿洛糖含量大大降低，有利于提升蔗渣预处理残渣热解生物油的品质。预处理残渣的热解产物中4-乙烯基苯酚达到23．38％，可以用做香精制作原料。
By thermogravimetric analysis and pyrolysis-gas chromatography/mass spectrometry technology （Py-GC/ MS） for bagasse and after subcritical CO2 treatment and cellulase pretreatment, the waste pyrolysis behavior was studied, the raw materials and preprocessing residue under different heating rate, the thermal chemical characteristics and thermal cracking product under 600 ℃ were analyzed. The results showed that bagasse material thermal weightlessness interval was at 200 ℃ to 400 ℃, the pretreated residue thermal weightlessness range was at 200℃ to 600℃. Subcritical C02treatment and compound cellulase pretreatment well removed the carbohydrate composition of the bagasse material in the pyrolysis. In the pyrolysis products, acetic acid, furfural, D-arlo sugar contents greatly reduced,which is beneficial to improve the quality of bio-oil obtained from bagasse the pyrolysis products of pretreated residue ,d-vinyl phenol reached 23.38%, which flavoring production. pretreated residue pyrolysis. In can be used as raw material of
出处
《造纸科学与技术》
北大核心
2013年第6期6-8,30,共4页
Paper Science & Technology
基金
国家"973"计划课题(2013CB228101)
"863"计划课题(2012AA101806)资助
关键词
蔗渣
预处理
热解
bagasse
pretreatment
pyrolysis
