| 摘要 |
<p>A method of utilising the lignin in black liquor, according to which method the Iignin is precipitated from the black liquor, the Iignin thus generated is carbonated to carbon and at least part of the carbon is fed into a recovery boiler, where it is burnt. When carbonating according to the present invention, it is possible to produce Iignin carbon from the black liquor either only for the needs of a lime reburning kiln or a similar recovery boiler, or for the needs of a lime reburning kiln (or a similar recovery boiler) and also to be used as a filler, for example for the rubber market.</p> |
