Increase production and lower costs
Air Liquide serves producers of pulp and paper with industrial gases and industry expertise to help you increase production, lower operating costs, enhance the safety of your operations and comply with stringent environmental regulations.
We supply oxygen as well as carbon dioxide, ozone and nitrogen solutions for a range of applications that assist you in reducing the environmental impact of your pulp and paper operations and increase your capacity in chemical recovery operations.
To help ensure safe and reliable gas supply, Air Liquide delivers gases to your facilities in bulk, FLOXAL™ on-site production systems, and supplies, installs and monitors storage vessels and related equipment.
Air Liquide provides cost effective solutions to improve the mill bleaching cost and yield while reducing the use of chemicals.
Air Liquide provides environmentally friendly solutions to recover chemicals from the Kraft pulp process.
Air Liquide Canada provides chloride-free solutions for Kraft pulp bleaching.
Now used in more than 150 sites worldwide, this process allows you to increase the quality of your pulp and reduce production costs, decrease your bleaching chemical requirements for elements like chlorine dioxide, as well as reduce your effluent chemical oxygen demand.
Polysulfide cooking enables you to increase the pulp yield by 1 to 3 percent and thus reduce your wood supply. Oxygen is used to convert classic kraft cooking liquor into a polysulfide liquor through controlled oxidation of sodium sulfide
Black liquors (weak or strong) can be treated with pure oxygen in pressurized reactors in order to oxidize sodium sulfide and reduce emissions of total reduced sulfur ("TRS") in the recovery boiler or to reduce the liquor heating value and increase the recovery boiler capacity
Inerting involves the addition of nitrogen, an inert gas, to displace oxygen or moisture and prevent unwanted reactions associated with safety and purity concerns during fly ash transport, sulfur dioxide SO2, methanol and liquid chlorine unloading.
If your lime kiln capacity is limited, oxygen is 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.
Pulp production is limited by recovery boiler capacity. Air Liquide has developed an air enrichment technology with oxygen using Jansen combustion high velocity air nozzle that allows you to safely increase capacity and reduce particule carryover. System audits is integral part of our gas offer.
Air Liquide supplies industrial gases, custom gas calibration standards and carrier gases including hydrogen, helium and nitrogen. Air Liquide also supplies EPA protocol gas mixtures to meet the most demanding needs.
The first ever specialty gas range for analytical applications designed to meet your needs to the fullest extent, from the most common to the most high end requirements.
If your sodium/sulfur balance is high in sulfur, one solution is to replace part of the sulfuric acid in your tall oil recovery unit with carbon dioxide. This can be achieved with Air Liquide patented technology currently in operation on several industrial sites.
Oxygen enables you to make high quality oxidized white liquor while reducing costs. Air Liquide Canada has developed high-performance oxygen dissolution technologies that can operate very efficiently with lower purity oxygen and off-gas coming from an ozonation process.
Our on-site production offer
Carbon dioxide can be used to buffer and lower the pulp pH into the D1 or D2 stage using FPInnovations near neutral bleaching technology. Advantages compared with traditional solutions is a reduction in chlorine dioxide usage and a more stable final brigthness.
Carbon dioxide can be used to regulate the pH of recycled, mechanical or chemical pulps after an alkaline bleaching stage, particularly when hydrogen peroxide is used. Advantages compared with traditional acids are ease of use, increased pH control stability, installation safety, reduction in sulfur containing products.
This process use oxygen in the extraction statge and reduces chlorinated reagents during the bleaching process, especially chlorine dioxide. Oxygen can be used in conjunction with hydrogen peroxide to ensure a greater reduction in chemical usage and resulting organochlorinated discharge (AOX).
Air Liquide supplies a range of products, equipment and services for water and wastewater treatment for processes like oxygen enrichment of aeration system, oxygen assisting device and carbon dioxide for pH control. To explore all of our water treatment offers, visit our environment page.
Ozone bleaching is an efficient method for decreasing your bleaching costs, eliminating chlorine dioxide (ClO2) generator upgrade and reducing AOX (adsorbable organic halide) emissions. Ozone can be produced from FLOXAL™ Oxygen and on site ozone generators. You can rely on our expertise in bleaching steps, recovery, and reuse of the oxygen rich off-gas from ozone bleaching stage to help achieve efficiency throughout your operations.
Our on-site production offer
Ozone can be used to bleach recycled papers, decolorize the pulp and reduce the residual fluorescence coming from optical whiteners.
Carbon dioxide can safely replace acids such as sulfuric acid or phosphoric acid in paper machines and sulfur dioxide (SO2) after an alkaline bleaching souring stage. The use of carbon dioxide enables better pH control, increase white water alkalinity, can reduce corrosion and is very safe to use.
Nitrogen is used with UV cured ink to improve curing time, reduce photoinitiators and with EB systems to eliminate oxygen and ensure ink curing
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