Excess foam can create a variety of challenges, all detrimental to pulp processing, paper making white water, sizing&coating: increased maintenance costs, lost capacity, reduced efficiency and longer processing time.

Pulp preparation or pulp washing is one of the main process which forms foaming in paper making industry.Anionic

surfactants are formed by chemical reaction between alkali and wood or Straw grass during cooking process.

Silicone defoamer or non-silicone defoamer are usually used for pulp preparation.Silicone and non-silicone defoamer has it’s own focus according to different raw materials.Silicone defoamer series are more efficient in pulp washing with hard wood and soft wood as raw material, such as:

https://www.rickmanchemical.com/high-antifoaming-performance-pulp-antifoam_p47.html