Producing cellulose product, hemicellulose product and lignin product, comprises treating lignocellulosic starting material with liquid treatment medium, solubilizing starting material and subjecting for fractional precipitation

摘要

Producing a cellulose product, a hemicellulose product and a lignin product, comprises treating lignocellulosic starting material with a liquid treatment medium comprising an ionic liquid, solubilizing the starting material at least partially in treatment medium and subjecting the solubilizate for fractional precipitation, which includes at least three precipitation steps.