Preliminary study on products distribution in alcohol pulping of Eucalyptus globulus

The aim of the present work was to study the fractionation of Eucalyptus gl obulus wood into pulp and by-products by alcohol-water pulping. Under the c ooking conditions employed low lignin content pulp and a high yield of by-p roducts were attained. The laboratory-scale alcohol and by-products recover y system studied consisted of three stages: black liquor flashing, lignin p recipitation from black liquor, and distillation of precipitation mother li quor. The mass balance for the process enabled the amount of pulp and by-pr oducts produced and the consumption of chemicals to be estimated. (C) 1999 Society of Chemical Industry.