发明名称 |
METHOD FOR RECOVERING A LOW SODIUM CONTENT LIGNIN FUEL FROM BLACK LIQUOR |
摘要 |
<p>There is disclosed a method for recovering a low sodium content lignin from spent kraft cooking liquor without the use a of strong mineral acid for acidulation comprising the steps of acidulating a spent kraft cooking liquor with carbon dioxide gas to a pH below about 10.5, precipitating at least a portion of the lignin forming lignin agglomerates and lignin particles in the spent kraft cooking liquor and recovering a low water and low sodium content lignin product comprising calcium or magnesium compounds bound to said lignin.</p> |
申请公布号 |
WO2008079072(A1) |
申请公布日期 |
2008.07.03 |
申请号 |
WO2007SE01113 |
申请日期 |
2007.12.17 |
申请人 |
KIRAM AB;STIGSSON, LARS;LINDSTROM, CURT |
发明人 |
STIGSSON, LARS;LINDSTROM, CURT |
分类号 |
C08H7/00;C08L97/00;D21C11/00;D21C11/04;D21C11/12 |
主分类号 |
C08H7/00 |
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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