Method of producing kraft pulp using an acid prehydrolysis and pre-extraction

摘要: A method for produce both kraft pulp and alcohol from hardwood chips or the like. The are subjected to mild acid prehydrolysis following by caustic pre-extraction. withdrawn hydrolysate has insufficient furfural inhibit microorganism growth, hexose pentose sugars in fermented ultimately ethanol, butanol, - after pre-extraction a sulphate cook, wash, resultant is even viscosity tear strength characteristics more desirable than that of conventional pulp. can be oxygen delignification, achieve higher K number fewer subsequent bleaching stages