| 摘要 |
<p>Process for separating the organic constituents of "black liquor" formed by chemical pulping of cellulose-containing materials. The black liquor is heated in a reactor (6) with CO and/or H<u2>u under pressure which results in the conversion of said organic constituents into a water-in-soluble liquid or oil which can be separated from the water phase by usual means, for example by decantation in a setting tank (9). Said conversion can be effected in one or more separate stages, the conversion conditions being different from stage to stage.</p> |
