NOVELTY - Producing pulp from biomass comprises: (a) providing lignocellulosic biomass comprising cellulose, hemicellulose, and lignin; (b) digesting the biomass to extract the hemicellulose into a liquid phase; (c) optionally separating the liquid phase from the solids; (d) washing the extracted solids with water, to generate a liquid wash filtrate and washed solids; (e) separating the liquid wash filtrate from the solids; (f) refining the washed solids, to generate pulp; and (g) recovering or further processing the pulp.    USE - The process is useful for producing pulp and hemicellulosic sugars from biomass (all claimed) including hardwoods, softwoods, forest residues, industrial wastes and consumer wastes.    ADVANTAGE - The process provides pulp and hemicellulosic sugars with high yield (75-95 wt.%) in an economical manner.    DETAILED DESCRIPTION - Producing pulp from biomass comprises: (a) providing lignocellulosic biomass comprising cellulose, hemicellulose, and lignin; (b) digesting the biomass in the presence of steam and/or hot water to extract at least a portion of the hemicellulose into a liquid phase to generate extracted solids; (c) optionally separating at least some of the liquid phase from the extracted solids; (d) washing the extracted solids with water at a washing pH of 7 or less, to generate a liquid wash filtrate and washed solids; (e) separating at least some of the liquid wash filtrate from the washed solids; (f) refining the washed solids at a refining pH of 4 or higher, to generate pulp; and (g) recovering or further processing the pulp. An INDEPENDENT CLAIM is included for process for producing hemicellulosic sugars from biomass, comprising the steps of (a)-(d) as above per se, and (e1) hydrolyzing the hemicellulose contained in the liquid phase and/or in the liquid wash filtrate, in the presence of a hydrolysis catalyst to generate hemicellulosic sugars, where the process includes integration of mass and/or energy involving at least two steps of the process.