发明名称 |
METHOD FOR SEPARATING LIGNIN FROM BLACK LIQUOR, A LIGNIN PRODUCT, AND USE OF A LIGNIN PRODUCT FOR THE PRODUCTION OF FUELS OR MATERIALS |
摘要 |
The method is for controlling a sodium and sulphur balance of a pulp mill while separating lignin from black liquor. Lignin is precipitated by using an acid followed by filtration. The lignin filter cake thus obtained is re-suspended in acidic liquid and dewatered to form a second cake. The filtrate obtained after dewatering of the second cake is returned for washing and suspension of the first cake. Sodium sulphate-rich ESP (electrostatic precipitator) dust produced in the recovery boiler is used in the washing of the precipitated lignin cake.
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申请公布号 |
US2010325947(A1) |
申请公布日期 |
2010.12.30 |
申请号 |
US20080918497 |
申请日期 |
2008.02.21 |
申请人 |
LIGNOBOOST AB |
发明人 |
OHMAN FREDRIK;THELIANDER HANS;TOMANI PER;AXEGARD PETER |
分类号 |
C10L5/00 |
主分类号 |
C10L5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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