CPVC is degraded by both strong acids and strong bases at elevated temperatures; acids corrode process units unless very expensive corrosion-resistant construction materials are used; and aqueous slurries with high solids content are difficult to pump. Use these facts to explain why the wetcake from the centrifuge is not sent directly to the dryer instead of going through the resin neutralizer, why sodium bicarbonate is used to achieve the neutralization, and why additional water is fed to the neutralizer.