Processed lignin and process to prepare such

Abstract

Processed lignin comprising the elements carbon (C), hydrogen (H) and oxygen (O) in the following amounts: C in an amount of between 60 and 85% by weight, H in an amount of between 3.0 and 6.0% by weight, O in an amount of between 10 and 29% by weight, wherein the weight ratio C/H is at least 12.5, the ratio C/O is at least 2.5, the processed lignin comprises less than 0.1% by weight of total Cl, a sulphur content below 1 g/kg, and a moisture content less than 3% by weight. A process to prepare the processed lignin comprising subjecting particles comprising lignin and cellulose and optionally hemicellulose to acidic hydrolysis using hydrochloric acid of at least 35%, subjecting the obtained residue to a high temperature treatment of between 300 and 500° C. under inert gaseous atmosphere to a total Cl level of below 0.1% by weight, after drying.

Dependencies are inferred from the claim text.