Abstract
Abstract Sulfur was added to alkaline pulping liquor and the time to passivation measured in two 3260 cu ft kraft digesters. The first digester was made of carbon steel partially coated with a stainless steel overlay while the second was of carbon steel only. With a sulfur addition of 0.32 lb per cu ft of liquor, complete passivation was obtained in both digesters. Without sulfur, passivation was delayed for 72 minutes in the carbon steel digester. The overall results showed that sulfur addition, either as such or combined with anodic protection, is another method of preventing corrosion in alkaline pulping digesters. 5.8.2, 6.2.3, 4.3.3
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