Talc-free Pitch Control Achieved via Advanced Chemistry and Real-time Monitoring

GoalMove to a talc-free process without any negative operational impact.

<h6>Customer Challenge</h6> <p>A North American pulp mill producing 1000 tons per day of NBSK/NBHK was interested in eliminating talc due to customer requests related to health and safety issues.</p> <h6>Recommended Solution</h6> <p>After a system audit, the Solenis team recommended replacing talc with Infinity PK7825 pitch control agent applied after the post-bleach thickener.&nbsp; They also recommended our revolutionary OnGuard 3S analyzer that provides accurate scale measurement in real time and provides advanced warning of potential upset conditions.</p> <p>In this case, the OnGuard 3S was used to monitor deposition rates and program feed rates to control deposits so that adjustments could be made before they negatively impacted dirt counts.&nbsp; The deposition rates were extremely well correlated with dirt counts at the pulp machine and provided a 12&ndash;18-hour advance warning.</p> <h6>Results Achieved</h6> <p>The Infinity PK7825 program successfully replaced talc with no negative impact on dirt counts, deposition or runnability.&nbsp; Additional benefits included a reduction in machine turbidity as a result of eliminating talc.&nbsp;</p> <p>The OnGuard 3S provided extremely good correlation with deposition rates as indicated by a period of lost chemistry feed rates that was identified and resolved before it could impact machine dirt counts.</p> <p><img style="max-width: 100%; width: auto; height: auto;" src="/link/47e319b0d6d1466f91515f4052312cbc.aspx" alt="" width="850" height="342" /></p>