Oxidation of sulphide in kraft black liquor and green liquor by residual oxygen in flue gas during precarbonation

✍ Scribed by Veeramani, Hariharan ;Johanson, Lennart N.

• Book ID: 102330163
• Publisher: Blackwell Publishing
• Year: 2010
• Tongue: English
• Weight: 175 KB
• Volume: 28
• Category: Article
• ISSN: 0142-0356
• DOI: 10.1002/jctb.5700281005

✦ Synopsis

Abstract

Kraft black liquor/green liquor was continuously recirculated in a column (diameter 100 mm, height 450 mm) packed with 16‐mm polypropylene Pall rings countercurrent to a gas stream containing N2 and O2 (O2–3.7%). The concentration of sulphide in the green liquor was not affected by oxygen in the gas; the latter, however, completely oxidised the sulphide in kraft black liquor over an 8 h recirculation period.