Process Optimization with gas applications in the manufacturing of pulp and paper
Many forest industry companies rely on Linde gas applications to optimize their processes. Carbon dioxide is used in pulp washing to increase capacity or improve washing results, especially in factories producing brown pulp. With the ACTICO application, pH is adjusted with carbon dioxide to the desired level in the wet end of the paper/board machine, which improves the functioning of chemicals such as adhesives. The ADALKA application is based on on-site sodium bicarbonate production and its use to increase alkalinity and stabilize the process.
Improving efficiency and sustainability
Many key players in the industry trust us to help increase capacity without the requirement for investment in new and larger equipment. We also help reduce dependence on hazardous chemicals, improve pulp washing efficiency, and stabilize pH, alkalinity, and calcium levels in papermaking. Our ACTICO® CO2 pulp washing solution can facilitate the transition from bleached pulp to unbleached pulp and help mills transition from paper to board. We also offer support for pulp and paper customers' water treatment, including cost-effective wastewater treatment solutions such as SOLVOCARB® and SOLVOX® oxygenation solutions, which keep treated wastewater contamination levels safe and avoid non-compliance.
Related topics
In paper and cardboard manufacturing, process stability reduces the number of production problems and improves machine drivability. In Linden's patented ADALKA application, on-site manufactured sodium bicarbonate is used to increase alkalinity, manage hardness, stabilize the manufacturing process, and enhance the performance of various chemicals such as adhesives. ADALKA is suitable for both pulp and mechanical pulp production processes.
The ACU (Alkalinity Control Unit) system is used in connection with the ADALKA application for the production of sodium bicarbonate. The unit automatically produces liquid sodium bicarbonate from diluted lye and carbon dioxide. The concentration of bicarbonate produced can be adjusted to the desired level, typically 4-6%.
In the ACTICO application, carbon dioxide is used to adjust the pH to the desired level in a controlled manner. The level can be selected and maintained according to customer-specific needs, for example, to improve adhesion or the efficiency of other chemicals.
Carbon dioxide can be used to lower the pH in pulp washing and enhance water removal and washing yield. If there are production bottlenecks in the washing phase, it is possible to increase production capacity with carbon dioxide, or conversely, reduce the amount of washing water used at current capacity. By reducing Na wash losses, it is also possible to save on chemical costs.
ADALKA® Process stabilizer
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