APPARATUS AND METHOD FOR HYDROLYSIS OF LIGNOCELLULOSIC MATERIALS

The invention relates to a method for extraction of saccharides from a lignocellulosic material and comprises the steps of mixing the lignocellulosicmaterial with afluid; dewatering the mixture of lignocellulosic material and fluid; and introducing the dewatered mixture into an apparatus for performing hydrolysis of the dewatered mixture in the apparatus， wherein at least parts of the apparatus that come into contact with the dewatered mixture are made of a material that comprises iron in an amount of at least 50% by weight and nickel in an amount of at least 1.5% by weight. The method comprises further the steps of measuring the moisture content of the dewatered mixture， comparing the measured moisture content with a predefined value and， if the measured moisture content is above said predefined value， preventing the dewatered mixture from entering the apparatus. The invention relates also to a systemfor performing said method. The invention relates to a method for extraction of saccharides from a lignocellulosic material and comprises the steps of mixing the lignocellulosicmaterial with afluid; dewatering the mixture of lignocellulosic material and fluid; and introducing the dewatered mixture into an apparatus for performing hydrolysis of the dewatered mixture in the apparatus， wherein at least parts of the apparatus that come into contact with the dewatered mixture are made of a material that comprises iron in an amount of at least 50% by weight and nickel in an amount of at least 1.5% by weight. The method comprises further the steps of measuring the moisture content of the dewatered mixture， comparing the measured moisture content with a predefined value and， if the measured moisture content is above said predefined value， preventing the dewatered mixture from entering the apparatus. The invention relates also to a systemfor performing said method.