Analysis of alkali, carbonate, hydroxide and sulfide in pulping liquors

This Process Application Note illustrates the straightforward online analysis of alkali (active, effective, total titratable alkali (TTA)), carbonate, hydroxide, sulfide and the causticizing degree in percent (CE%). The analyzer determines white, green, black, and wash liquor with multiple sample lines and outputting results for closed-loop control. The method complies with the pulp and paper industry standard SCAN-N 30:85. Additionally, the sulfate concentration can be measured with thermometric titration.