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发明名称
造纸黑液湿法碱回收
摘要
本发明披露了一种黑液湿法碱回收的方法,包括:用二氧化硫作酸化剂,将碱法造纸制浆黑液酸化分离出木质素,含糖液厌氧发酵生成沼气或水解成糠醛,用石灰粉沉淀分离得到亚硫酸钙和碱溶液回用于制浆。既实现了木质素等资源回收又以湿法化学反应实现了造纸黑液的碱回收。
申请公布号
CN1141441C
申请公布日期
2004.03.10
申请号
CN00100645.2
申请日期
2000.01.26
申请人
孙连超
发明人
孙连超;许玮
分类号
D21C11/04
主分类号
D21C11/04
代理机构
代理人
主权项
1.一种将造纸制浆黑液转化成木质素和碱液的方法,其特征在于用二氧化硫酸化法分离木质素,水解去除黑液中的糖类,用石灰粉沉淀分离出亚硫酸钙并得到碱溶液回用于制浆,从而以湿法化学反应实现造纸黑液的碱回收。
地址
100085北京市海淀区双清路18号
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