PENGARUH PERBANDINGAN CAIRAN PEMASAK DENGAN
CHIP TERHADAP PROSES PEMASAKAN DI DIGESTER
PLANT PT. TOBA PULP LESTARI, Tbk PORSEA
ABSTRAK
Pada proses pemasakan serpihan kayu digunakan liquor yang terdiri dari white liquor dan black liquor sebagai cairan pemasak. Pada proses pemasakan harus digunakan perbandingan yang sesuai antara liquor dengan serpihan kayu yang disebut liquor to wood ratio. Liquor to wood ratio menyatakan perbandingan antara liquor dengan serpihan kayu. Liquor to wood ratio berhubungan dengan kualitas pulp yang dihasilkan ditunjukkan oleh nilai kappa number. Semakin tinggi liquor to wood ratio maka nilai kappa number akan semakin tinggi karena liquor to wood yang semakin tinggi menyebabkan volume liquor khususnya black liquor menjadi semakin tinggi. Volume black liquor yang semakin tinggi tersebut menyebabkan kappa number tinggi karena komposisi black liquor yang sebagian besar mengandung lignin. Berdasarkan hasil pengamatan maka liquor to wood yang baik digunakan untuk mencapai target kappa number 6 adalah 3,88.
Kata Kunci : liquor to wood, black liquor, kappa number
THE EFFECT OF LIQUOR TO WOOD (L/W) RATIO TO THE
CHIP COOKING PROCESS ON DIGESTER PLANT
PT. TOBA PULP LESTARI, Tbk
ABSTRACT
In the process of cooking wood chips used liquor comprising white liquor and black liquor as the cooking liquid. In the cooking process should be used appropriate comparison between liquor with wood chips called liquor to wood ratio. Liquor to wood ratio states the ratio between liquor with wood chips. Liquor to wood ratio relates to the quality of the pulp produced is indicated by the value of kappa number. The higher the liquor to wood ratio of the value of kappa number will be higher because the liquor to wood higher lead volume, especially black liquor liquor becomes higher. The volume of black liquor that causes the higher kappa number is high because the composition of the black liquor that mostly contains lignin. Based on observations of the liquor to wood that is well used to achieve the target kappa number 6 is 3.88.
Keyword: liquor to wood, black liquor, kappa number
