| 摘要 |
1/1 resumo método para a recuperação de hidrolisado a method for producing pulp is disclosed. more particularly, the invention concerns a displacement batch cooking process comprising recovery of a first treatment liquid by draining of the digester, preferably not using a displacement liquid. the inventive method may preferably be used in a prehydrolysis step, wherein the recovery of the by-products is improved. in the recovery step of the present invention, after the target p-factor in the prehydrolysis stage is reached, the hydrolysate is withdrawn by draining in at least one phase obtaining a strong first liquid and thereafter any residual hydrolysate may be displaced. fig. (8) |
