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Air Liquide in India Pulp & Paper- Chemical Recovery

Black Liquor Oxidation

Black liquors (weak or strong) can be treated with pure oxygen in adapted reactors in order to reduce emissions of sulfur containing compounds and to reduce calorific capacity. 

Gases : Oxygen

 

Inerting

Inerting involves the addition of nitrogen, an inert gas, to displace oxygen or moisture and prevent unwanted reactions associated with safety and purity concerns.

Gases : Nitrogen

 

Lignin Precipitation with Carbon DiOxide

Gases : Carbon Dioxide

 

Lime Kiln Boosting

If your lime kiln is overloaded, oxygen be the solution to help you debottleneck and reduce total reduced sulfur (TRS) emissions. We can help you implement this technology with specific audits, customized air enrichment methods or direct injection.

Gases : Oxygen

 

Oxygen Enrichment of Recovery Boilers

Pulp production is limited by recovery boiler capacity. Air Liquide and JANSSEN have developed an enrichment technology for combustion oxygen that allows you to safely increase capacity by 10 to 20 percent – and we conduct system audit as part of our gas offer. 

Gases : Oxygen

 

Tall Oil Neutralization

If your sodium/sulfur balance is high in sulfur, a simple solution is to replace part of the sulfuric acid in your tall oil recovery unit with carbon dioxide. This can be achieved with our Air Liquide patented system currently in operation on several industrial sites.

Gases : Carbon Dioxide

 

UV Curing

Nitrogen can be used to displace oxygen from the curing chamber during the UV curing process, resulting in a higher quality of treatment, reduced VOC emissions and lower photoinitiator costs.

Gases : Nitrogen

 

White Liquor Oxidation

Oxygen enables you to make high quality oxidized liquor while reducing costs.  Air Liquide has developed high-performance oxygen dissolution systems that can operate very efficiently with lower purity oxygen such as VSA oxygen, off-gas coming from an ozonation process, and others.

Gases : Oxygen