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METHOD OF PRODUCING DISSOLVING PULP, DISSOLVING PULP AND USE OF METHOD
METHOD OF PRODUCING DISSOLVING PULP, DISSOLVING PULP AND USE OF METHOD
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机译:生产溶解浆的方法,溶解浆及其使用方法
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摘要
A method of producing dissolving pulp from a recycled fibrous feedstock. The method comprises providing a fibrous material comprising cellulose, lignin and hemicellulose, said fibre source further having a lignin content of 0.1 to 7% lignin and an ash content of up to 3%; subjecting the fibrous material to an alkaline extraction at a temperature of about 0 to 25° C., to produce fibres having a reduced content of hemicellulose; subjecting the fibres thus obtained to a bleaching treatment carried out with oxidative chemical reagents in order to reduce the lignin content of the fibres; and recovering the fibres thus obtained. By means of the method, dissolving pulp can be produced from recycled paper and cardboard products.
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