Pulp & Paper processes  [ Return to  Pulp & Paper  ]

Lime Kiln:
Your lime kiln is saturated? Oxygen may help you debottlenecking it and reducing sulfur compounds emission. Air Liquide can help you to implement this technology by offering specific audits and customized methods for air enrichment.

Ozone bleaching:

You aim to decrease your bleaching costs and move away from chlorine: ozone is the most efficient method, already adopted by more than 30 sites worlwide. Air Liquide brings its unique expertise for the bleaching steps and help you in recovering oxygen-rich-off-gas from the ozone generator.

Oxygen Delignification:

This process, now used in more than 150 sites worldwide, allows you to reduce production costs, dramatically decrease your chlorine dioxide and/or hydrogen peroxide needs, and increase the quality of the pulp while reducing considerably the wastes.

White Liquor Oxidation:

Utilization of a white liquor in an oxygen delignification step involves a prior oxidation reaction: Oxygen enables to get a high quality oxidized liquor while minimizing the necessary investment and cutting your chlorine costs. Thanks to our research teams, highly efficient O2 dissolution systems have been designed with outstanding flexibility: they can operate very effciently with oxygen containing impurities (impure oxygen, off-gas coming out of an ozone generator, etc...). Air liquide patented system has set a new standard in the industry.