New Process for Pulping with High Initial Hydrosulfide Concentrations, 1996 Engineering Conference Proceedings
A novel process has been developed to improve both conventional and modified kraft cooking by producing two (or more) white liquors of chemical concentrations optimized for the different phases of the cook. The process results in feeding the chips a hydrosulfide-rich liquor early in the cook, followed by an alkali-rich liquor, or liquors, later in the cook. The results of previous analytical and experimental work aimed at verifying process benefits are presented, the proposed liquor making process is described in conceptual terms, and practical process options, for integrating the new process with both conventional and modified pulping and liquor recovery processes and with possible future closed-cycle mill concepts, are outlined.
New Process for Pulping with High Initial Hydrosulfide Concentrations, 1996 Engineering Conference P
