Close-up foam bubbles texture from soap, shampoo or cleanser on © Adobe Stock

CHALLENGE FOAM FORMATION AND GAS INTRAPMENT IN PULP & PAPER INDUSTRY

Surface foam.
Carrier foam.
Cavitation.

We solve foam-related production problems

Excessive levels of dispersed gas and increased foaming in the pulp and paper production process have a major impact on the performance of the machine and the quality of the end products:

  • Pinholes and stains in the paper
  • Reduced drainage speed
  • Problems with deposits
  • Pump cavitation
  • Increased energy consumption

Controlling and stabilizing the foam content by using defoamers in the wet end is crucial, especially for high-speed paper machines.

Our application experts will be happy to advise you on the selection and use of the right product for your application.

Causes of excessive foaming and air intrapment

Foam is a colloidal system formed by the dispersion of gases in a liquid. In pulp and paper production, the main causes of this are:

  • Entry of gas or formation of gas in the liquid medium:
  • Dissolved surface-active substances in the liquid medium:
    • Fatty acid and colophony soaps
    • Lignin derivates
    • Residues of sulphuric acid and sulphates in the pulp
  • Solid particles that can adsorb at the gas-liquid interface and form a stable film between the gas bubbles:

ProduCTS AND SYSTEMS

Efficient solution for foam supression and de-gassing:

Product


PETROFOAM©

Deafoamers and De-Gassing Agents

Product


FIBREDIS®

Biopolymer for pulp production to decrease demand of foam forming masking agents

purity water splashing wave © Fotolia.com

Clear thinking.

Sustainable actions.