首页>
外国专利>
A METHOD FOR SEPARATING LIGNIN FROM BLACK LIQUOR, A LIGNIN PRODUCT, AND USE OF A LIGNIN PRODUCT FOR THE PRODUCTION OF FUELS OR MATERIALS
A METHOD FOR SEPARATING LIGNIN FROM BLACK LIQUOR, A LIGNIN PRODUCT, AND USE OF A LIGNIN PRODUCT FOR THE PRODUCTION OF FUELS OR MATERIALS
展开▼
机译:从黑液中分离木质素的方法,木质素产品以及木质素产品在燃料或材料生产中的用途
展开▼
页面导航
摘要
著录项
相似文献
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.
展开▼