摘要
蔗渣浆黑液在蒸发和碱炉中有其独特的热性质。对蔗渣浆黑液的加热过程表明 :在 180～ 190℃前 ,黑液主要以蒸发水分为主 ,考虑到高温下黑液易于流动和翻腾搅拌的特点 ,蔗渣浆黑液高浓蒸发的温度建议设在180℃ ;升温至 2 5 5℃ ,黑液的部分固形物会热解产生液体的油状物及气化苯酚和乙烯苯 ;2 5 5～ 5 90℃黑液继续裂解 ,产生了木素大分子的碎解产物和小分子有机物 ;加热到 6 5 0℃时 。
The pyrolysis behaviour of bagasse pulping black liquor was studied in this paper. Water in the black liquor was evaporated when it was heated at blow 180～190℃,some of the bagasse black liquor was pyrolysised into oiled liquid and gas material such as phenol,2-methoxy-phenol when the temperature rose to 590℃,the macromolecules of lignin were pyrolysised quickly into the smaller molecule material. The mineral substances of the black liquor were pyrolysised at 600～650℃.
出处
《中国造纸学报》
CAS
CSCD
北大核心
2000年第B12期112-115,共4页
Transactions of China Pulp and Paper
基金
国家轻工局轻工资金及华南理工大学制浆造纸工程国家重点实验室研究资金资助项目
