摘要 |
A method of introducing anthraquinone into the kraft pulping process for the delignification of lignocellulosic material by dissolving or homogeneously dispersing the anthraquinone in a mixture of from about 10% to about 50% white kraft pulping liquor and, correspondingly, from about 90% to about 50% black kraft pulping liquor and then blending this solution with the white liquor feed into the pulping digesters.
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