FIELD: paper-and-pulp industry.
SUBSTANCE: invention provides cellulose production process that can be used in pulping carried out by alkaline, neutral, and neutral sulfite methods. Cellulose-containing stock is pulped in presence of catalyst, in particular waste produced in production of anthraquinone via catalytic vapor-phase oxidation of anthracene. In this case, anthraquinone production waste is preliminarily exposed for 3-10 min to ultrasonic field and simultaneously treated with white lye at lye-to-anthraquinone production waste (1-4):1.
EFFECT: improved pulping characteristics for cellulose-containing vegetable stock.
2 cl, 1 tbl, 22 ex
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