A PROCESS FOR REDUCING SCALING IN THE PULP AND PAPER INDUSTRY AND USE OF CARBON DIOXIDE THEREFOR

摘要

The present invention relates to a process for reducing scaling by calcium carbonate precipitation on equipment in the pulp and paper industry. The process is especially advantageous in the production of paper and board. The process relates to an alkaline aqueous process fluid, which contains calcium ions and carbonate ions with a tendency for calcium carbonate scaling. The fluid is passed through equipment, wherein the fluid is subjected to a change in energy. Precipitation of calcium carbonate an d scaling on the equipment is prevented by introducing carbon dioxide into the fluid prior to its passage through the equipment. The invention also relates to the use of carbon dioxide for reducing scaling on equipment used in the pulp and paper industry.