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Defoamer in papermaking pulping black liquor


Invely-620D in papermaking pulping black liquor trial application:

Costomer introduction:

A paper mill in Shandong Province has an annual output of 600,000 tons. The raw material is hardwood. The foaming in the black liquor of papermaking is serious. Lead into efficiency of vacuum washing is greatly reduced, which seriously affects the stability of production and the quality of paper products, and even causes the machine to stop. . After Learned our defoamer, sent 20 kg of black liquor to our company for testing and selection, recommended the Invely-620D, the foam was effectively controlled.


Date sheet

Product Name: Defoamer Invely-620D
Key property:
·   Good compatibility, silicone grease does not precipitate and float after moderate dispersion in the system;
·   Easy to disperse in water, good compatibility within the addition;
·   Acid and alkali resistant
Appearance
White Emulsion
Ionic Type
of Emulsion
Weak anion
PH
6.0-7.5
Viscosity (cps)
1000-2000

How to add?

Add method
Metering pump stock solution
Add point
washer, one section, five sections
Total consumption of tons of paper
200-400g/ton

Conclusion

Ø  Effective control of foam in the pulping black liquor system, the thickness of the pulp in the washer is increased, and the sizing rate is effectively improved.
Ø  The cleaning of the pulp is improved, the water filtration is improved
Ø  The concentration of black liquor is reduced, which contributes to the recovery of residual alkali
Ø  The paper index is stable

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