Low-cost evaporator, upgrades boost performance, reduce scaling

From: Pulp & Paper | Date: February 1, 1999| Author: | Copyright information

TO REDUCE CALCIUM SCALING IN BLACK liquor evaporation systems, many mills resort to chemical additives, redesign of existing evaporation equipment, or the purchase of a new system. However, a less costly way to address this problem is possible with a crystal growth system that effectively alters the black liquor before scaling occurs. In addition, unlike its more costly alternatives, this system remains effective in cases where liquor chemistry changes after the scaling solution is implemented.

Black liquor evaporation systems are inherently prone to scale deposition in an evaporation region ...

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