Excellent Antifoaming Performance Defoamer in Pulp and Paper

• Color: White
• Appearance: Liquid
• Kind: Antifoam
• Producing Flow: Defoamer Chemical
• Transport Package: 200kg/1000kg/Drum
• Origin: Mde in China
• Model NO.: RK-DT502
• Production Capacity: 30000ton/Year

Product Description

RK-DT502 is a type of silicone antifoam emulsion designed to control foam in aggressive foaming environments. It has better acid and alkali resistance and excellent defoaming and antifoaming persistence. It's widely used in all kinds of pulping process, wastewater treatment, cleaning industry, oild field chemical industry.

Product property:

Strong alkali resistance and high temperature resistance

Excellent foam control performance

item	Range
Appearance	White to light yellow liquid
pH	6.5~9.0

Application Process:

RK-DT502 could be added directly or diluted to be a low content.

RK-DT502 could be directly diluted with water, but should be used up immediately. If storage will be a certain period of time after dilution, please consult our company, and a professional dilution methods will be provided. Due to the temperature and stirring of different wastewater system, the ideal effect can be achieved by10-500ppm(10ppm as the unit). Optimized dosage is depended on site.
When the temperature is above 60ºC, please add defoamer before 60ºC.

The addition point is generally selected in areas where defoamers are easily dispersed, and can be continuously added by using metering pump.

Key Applications

Pulp JMills

Wastewater treatment
Storage condition:

Room Temperature Storage(5ºC-40ºC),Avoid direct sun light,shelf life is 6 months.
Package:25kg/200kg/1000kg/Drum

Defoamers And Antifoams For Pulp And Paper Industry

 

The foam appears during pulp production, due to the black liquor that is comprised of NaOH, Na25, tall oil soap, rosin soap, lignin, cellulose and other organic compounds. And paper machines are very sensitive to foam generation through chemical interactions on the machine such as sizing, fines, dry strength, wet strength.  Foaming can reduce pulp and final paper quality and quantity.

Antifoam for pulp process:

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 materials. Silicone based defoamer series are usually continuously added to the filtered black liquor during pulp washing process.
 

Antifoam for papermaking white water wet end

Paper making process is an important process for paper forming. A lot of additives, such as sizing agent, retention agent, filter aid,wet strength agent,dry strength agent etc are to be used to form paper with certain performance. These additives are added in different dosing points. And it's easy to form foaming during white water circulation in closed system.

Paper machine defoamer is usually added in the points with a lot foam, for instance, underwire white water chest or white water tank. Defoamer will be added continuously in several dosing points to give full play of defoamer performance.It will not only achieve good performance but also save cost.
 

Foam Control Agents For Water treatment:

In water and wastewater treatment industries, the fluids contain bacteria, chemicals, and other compounds hazardous to human health. The causes of foam in different water treatment plants are varied. Foam can be caused by biological activity, mechanical action, chemical contamination, surfactants or some polymer. Regardless of the cause, excessive foams are unacceptable and often interfere with operations.