PROCESS FOR PRODUCTION OF PRECIPITATED LIGNIN FROM BLACK LIQUOR AND PRECIPITATED LIGNIN PRODUCED BY THE PROCESS

摘要

The present invention relates to a process tor the production of precipitated lignin from black liquor wherein the process comprises the steps of providing a black liquor stream treating the black liquor at an increased temperature and precipitating the lignin from the heat treated black liquor. The present invention further relates to precipitated lignin produced according to the process and use of the precipitated lignin produced.