THE MANUFACTURE OF KRAFT PULP BY SODIUM HYDROXIDE PROCESS
1949 Volume 3 Issue 3 Pages 17-22,53a
Details
1949 Volume 3 Issue 3 Pages 17-22,53a
It is pointed out that the pulp made by this process is quite suitable for making wrapping and bag paper as well as vulcanized fiber substitute, paper container etc. The preparation of cooking liquor is described and particularly, cooking operation and gas recovery are explained with experimental data. The following points are made clear
1) Composition of cooking liquor is limited to the proportion of CaO : S=1 : 1 with 3% concentration respectively.
2) In cooking, the liquor is charged so as to leave air space in the upper part of the digester.
3) Cooking pressure is 120 lbs per sq. in. while cooking time, 1012 hours.
