Behavior of Oxygen Gas in Industrial Medium Consistency Oxygen Delignification Systems, 2004 Engineering, Pulping, and PCE&I Conference

The commercial success of oxygen delignification systems relies on effective application of oxygen gas to a medium consistency, brownstock pulp slurry.

The system design relies on a range of published delignification kinetics data, primarily focused on optimizing selectivity at maximum delignification levels. The effects of solids carryover on selectivity and delignification are also studied.

The physical behavior of the oxygen (O2) gas in the system, and how this relates to the reaction kinetics and commercial performance of the oxygen delignification systems, is a process design area that is not fully understood.

Recent publications have begun to investigate the physical behavior of the oxygen gas. It is the purpose of this paper to tie these publications into kinetics data and commercial performance to clarify the interaction of the process equipment with the oxygen gas in medium consistency oxygen delignification system design.