Defoaming Agent for Pulp

Foaming reason in pulp making, harmful to paper products

During pulping cooking processing need add alkaline,after alkaline's chemical reaction with pulp raw materials such as the wood, wheat-straw, anionic surfactant will be created in the pulp black water ,and that will lead to foam foramtion, The foams will lead to circular holes or pin holes on paper. It also results in reduced dewatering rates and deposit problems from foam buildup. Overflow of foam in paper manufacturing stock from tanks can result in the loss of solid material.

According to different raw materials ,need use different kinds of defoamers,for wood material normally use Silicone antifoam agent,for straw pulp need non silicone defoamer, higher dosage but no silica residual.

Silicone defoaming agent for Pulp making

is a kind of emulsion type modified silicone antifoam agent, it is composed of polysiloxane, modified polysiloxane, silica, dispersing agent and stabilizing agent It can be used in paper pulp production to prevent the foam problem in the production process. It also applied to Industrial Sewage (water treatment), Oil Drilling and Fracturing Fluid etc.

a kind of silicone base defoamerIt offer quick bubble break performance, excellent persistency. It shows excellent defoaming performance through a wide temperature range (25°C-100°C) and stable effects in strong alkaline (pH 10.0-12.0) condition, good foam control performance can be achieved by small dosage.

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Effect of foam on the papermaking process

Influence of foam on pulp engineering

For pulp engineering, the production and presence of foam will seriously affect the normal operation of pulp washing, sieving, bleaching and beating, making these procedures and equipment unable to function effectively and thus delaying the production cycle.

Influence of foam on paper making engineering

For paper engineering, the impact of foam is greater

Such as:

1. The foam in the paper material will affect the concentration of the slurry tank, making the flow state of the paper material unstable;

2. Foam will block the microholes on the surface of wet paper width, making the mesh difficult to be dehydrated. The fibers and dispersed packing will gather on the mesh cloth, affecting the uniformity of the paper width;

3. Too much foam will form scum, so that the paper online mesh blockage, when serious may lead to rupture;

4. When making cardboard, when the foam between the cardboard is stable, it will affect the cardboard combination, so as to reduce.

Silicone based defoaming agent special designed for pulp making

WHY CHOOSE US:

◆18Years R&D and manufacturer experience with more than one hundred products for different industries and applications.

◆ ISO certified Manufacture and National Award high-tech enterprise.

◆ With own laboratory and R&D team, keep developing and innovating new products to satisfy the customers' demands.

◆ Annual output more than 10,000MT and regular stock warehouse, stable supply and delivery in time.

◆Independent Shanghai sales office and shanghai warehouse convenient to our customer communication and cargo shipment.

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