Advantage of type defoamers for pulp and paper Type of defoamer Advantage Grease Breaking foam quickly Silicone Fast antifoaming performance Fatty ALohol Strong degassing performance, low unit price, minimal impact on sizing Polyether (ester) Fast defoaming and excellent foam inhibiting performance Harm of excessive foam in pulping process: 1. The generation of foam leads to the decrease of ...
Hazard of bubbling in circulating water treatment (1) Excessive foam leads to thorough sewage treatment, which cannot meet the detection standards of environmental Protection Bureau, and can not be discharged, slowing down the process; (2) Too much foam spills over from the surface, causing serious pollution of the external environment; (3) too much foam, water treatment appearance is too ugly; (4...
No matter pulp process or paper making process, many surfactants are essential for the during production. Surfactants used as cooking AIDS can promote the penetration of cooking liquid to fiber raw materials, enhance the removal of lignin and resin from wood or non-wood, and play the role of dispersing resin. The anionic surfactants used as resin remover include sodium dodecyl benzene s...
Before selecting the type defoamer, let's learn the principle of antifoaming agents Principle of defoaming agent Antifoam, also known as defoaming agent, has the following principles: 1. Decrease of local surface tension of foam leads to bubble burst The origin of this mechanism is that high alcohol or vegetable oil is sprinkled on the foam. When it dissolves into th...
With the development of modern science and technology, high quality and high efficiency are required for pesticide industry.That is, the formulation of pesticides should use a variety of additives, including additives to help the active drug wetting and dispersion;There are additives to improve the storage stability of pesticide products;There are also auxiliaries that achieve specific functions. ...
More and More companies who are traders , know how to choose the type of defoamers in papermaking process. However , how to evaluate defoamer’s performance in papermaking process, they just do some lab in simple test by eye observing the foam. It works but is not comprehensive. In order to evaluate comprehensively, you need to know the air content measure, which is mainly used to detect the ...
