Can HEDP•Na2 be used in papermaking assistance?

Yes, HEDP•Na2, or 1-Hydroxyethylidene-1,1-Diphosphonic Acid Disodium Salt, can be used in papermaking assistance. This chemical compound offers several benefits and functions in the papermaking process, including:

1.Scale and Corrosion Inhibition: HEDP•Na2 is effective in controlling the formation of scale deposits, particularly calcium carbonate and calcium sulfate, in the papermaking process. It prevents scale buildup on the surfaces of equipment, such as pulp digester, pulp washing systems, and paper machine, which helps maintain operational efficiency and prolong the lifespan of the machinery.

2.Metal Ion Sequestration: HEDP•Na2 acts as a chelating agent for various metal ions, such as calcium, magnesium, and iron. By sequestering these metal ions, it prevents their interference with other chemicals used in the papermaking process, such as sizing agents and retention aids.

3.Corrosion Protection: In addition to scale inhibition, HEDP•Na2 provides corrosion protection for the metal surfaces of the papermaking equipment by forming a protective film that helps prevent rust and corrosion.

4.pH Buffering: HEDP•Na2 can contribute to pH buffering in the papermaking system, helping to stabilize the pH levels and maintain suitable conditions for the overall process.

5.Pulp Bleaching Support: HEDP•Na2 can also be used in pulp bleaching processes to stabilize bleaching agents and prevent metal ion-mediated degradation, thereby contributing to the overall efficiency of bleaching operations.

The specific dosage and application of HEDP•Na2 would depend on various factors such as water quality, process conditions, and the specific requirements of the papermaking operation. Like other chemicals used in papermaking, the use of HEDP•Na2 requires careful evaluation, optimization, and possibly trials to determine the most effective dosage and application strategy for a particular paper mill.

Consulting with experts in paper chemistry or chemical suppliers can provide detailed guidance on the appropriate use of HEDP•Na2 or alternative chemicals in papermaking assistance.