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Defoamer for paper making is designed according to the foaming characteristics of paper making process in paper making industry. It can effectively control pulp, foam overflow and improve paper making quality. Widely used in papermaking system defoaming, can also be used for papermaking sewage treatment, antifreeze, distillation system defoaming.
This product can quickly eliminate the wheat straw, rice straw, pine, waste paper, reed, bamboo and other surfactants and the foam produced in the paper industry, in the pulping, washing pulp, the effect is obvious, foam inhibition lasting, non-toxic odorless, no later pollution. can effectively control the pulp overflow and improve the papermaking quality.
Many harmful foams are produced in the process of industrial production, and defoamers need to be added. Widely used in latex, textile sizing, food fermentation, biomedicine, coatings, petrochemical, paper, industrial cleaning and other industries in the production process of harmful foam. Silicone emulsion defoamer use note: The emulsion needs to be thoroughly mixed before use or sampling. Oil-in-water emulsions can be diluted at will, but at the same time the stability of the emulsion will be drastically reduced, such as delamination. To dilute, add water to the antifoam and stir slowly. Since the emulsion is most stable at the original concentration, the diluted emulsion must be used up in a short time. The emulsion is sensitive to frost and temperatures above 40°C and is easily damaged. Avoid frost! Already frozen emulsions can be carefully defrosted, but must be tested before further use. Prolonged strong shaking or strong shearing (e.g., using mechanical pumps, homogenizers, etc.) or stirring can destabilize the emulsion. Increasing the viscosity of the emulsion or adding a thickener can improve the stability of the emulsion.
1 can be diluted with clean water 1-3 times the addition of pulp pool, head box, net slot and other bubble parts;(2) the usage amount is 0.01 -0.2% of the foaming system; ③ This product should be used as soon as possible after being diluted.
Defoaming addition point in pulping
in pulp mill antifoam agents are typically adde in that bleaching and washing sections, typically in the wash, thickener and chest. Defoamers in the papermaking section are generally added to the headbox, chest, coating and size press of the paper machine.
addition amount
Generally, it is more economical and effective to use two defoamers than to use a higher content of a defoamer, which is added separately at a distance. For example, one defoamer is added before the beater and the other is added at the headbox.
Transportation and storage
This product is non-toxic, non-flammable and explosive, stored in a cool, sheltered place, sealed preservation. The storage period is 6 months, and there is no obvious delamination. Storage beyond the best use period indicated on the label does not mean that the product cannot be used any longer. However, in order to ensure the quality of the product in this case, it is necessary to re-examine the relevant properties of the product.
