CD Tugas Akhir
Pengaruh Jumlah Soda Loss Dalam Pulp Terhadap Pemakaian Clo2 Di Delignification 0 Stage Pada Unit Bleaching Fiberline #2 Di Pt Riau Andalan Pulp And Paper
ABSTRACT
Soda losses was the amount of sodium that still in pulp out from system. This sodium come from white liquor that used as cooking liquor in digester plant. Sodium was one of active substance in white liquor soak into pulp to dissolve the other component in wood except cellulose in cooking stage. Sodium and other component that dissolved in cooking liquor will be wash at washing stage. However, in washing stage filtrate that used can not very much because it will cause the problem in filtrate process to result back white liquor. This was cause there are still sodium in pulp. This sodium will influence amount of consumpt bleaching substances in bleaching plant. Bleaching. The purpose of this report was to determine the effect of the amount of soda loss in the pulp on the use of chlorine dioxide in the D0 tower in the bleaching unit. Chlorine dioxide (ClO2) used in pulping was very expensive, with the most use in the D0 stage bleaching process, which was ±70% of the ClO2 used; so that its use was optimized by controlling the use of ClO2. Observations in this final project were carried out by collecting operational data for stage D0 stage bleaching process. Then the data was classified based on the high level of soda loss and then, the data was reclassified based on the results of using ClO2. Furthermore, the data were analyzed using a pareto chart. The results of the analysis show that the amount of sodium remaining in the pulp can affect the amount of ClO2 used in the bleaching process. From the results of calculations with a approach of least squares, the value of R2 = 0.99 is obtained. For data, the highest soda loss was 6.7 kg/ton, the lowest is 5.5 kg/ton and the highest ClO2 was 163.62, the lowest is 134.30. This shows that the relationship between the amount of soda loss and the total use of ClO2 is directly proportional. the greater the amount of soda loss in the pulp, the greater the amount of ClO2 used and vice versa.
Keywords: ClO2 , D0 stage, soda loss, white liquor
Tidak tersedia versi lain