Pengaruh Konsentasi Total Titratable Alkali terhadap Persen Causticizing Efficiency dan Persen Sulfidity di dalam White Liquor Storage pada proses Recausticizing di PT. Toba Pulp Lestari, Tbk.

Abstract

White liquor is a liquor obtained from the reaction of green liquor with calcium oxide (CaO), through a process that occurs in causticizer recausticizing. The content is primarily Sodium hydroxide (NaOH), Sodium sulphide (Na2S), and Sodium Carbonate (Na2CO3) bit, where the total of the amount of the compound represented by the Total Titratable Alkali. White liquor is to be used as the main ingredient in the cooking wood in digester unit. Before the white liquor, should be used to control the quality of the white liquor. The parameters analyzed in the white liquor is Total Active Alkali (TAA), percent of Causticizing Efficiency (% CE), andpercent of Sulfidity (% S). In this case the Total Aktive Alkali desired target is 93 g / l - 113 g / l, percent Causticizing Efficiency is 72-83%, and percent Sulfidity is 20-29%, if the white liquor has met the expected target, then the white liquor can be used as a cooking ingredient in the units in the production process of pulp digester