Fractionation and gasification of black liquor derived from kraft pulping

By combining hydrolysis, it was observed that the maximum concentration of xylose + mannose + galactose (xmg) was 10.7 g/L at a CS of 1.72. The aliphatic acid, aromatic acid and aldehydes were released 29.8, 0.45 and 0.90 from the black liquor at CS of 1.19, 1.72, and 2.19, respectively. In the gasification using bench-scale bubbling fluidized bed (BFB) reactor, high-quality syngas (H-2/CO: 1.47) was obtained from the steam of acid-insoluble lignin (AIL), suitable for conventional energy systems such as gas engines, turbines, and boilers. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.