| Summary: | Copyright Pulp & Paper Canada. Reprinted with permission from Annex Business Media. Sootblowers in a kraft recovery boiler consume a large amount of high-pressure superheated steam. With properly designed nozzles and increased sootblowing steam flow rates, sootblowers can operate at a steam pressure as low as 10 bars (150 psig), without significantly compromising the deposit removal efficiency of the sootblower jet. Since low-pressure steam can be much less valuable than high-pressure steam, the increase in steam usage can be readily justified. The economic benefits of low-pressure sootblowing may vary from mill to mill, depending on the differential cost between high-pressure steam and low-pressure steam. This work was conducted as part of the research program on "Increasing Energy and Chemical Recovery Efficiency in the Kraft Process", jointly supported by the Natural Sciences and Engineering Research Council of Canada (NSERC) and a consortium of the following companies: Abitibi-Bowater Inc., Alstom Power, Andritz, Aracruz Celulose, Babcock & Wilcox, Boise Paper Solutions, Carter Holt Harvey, Celulose Nipo-Brasileira, Clyde-Bergemann, Diamond Power International, Domtar, DMI Peace River Pulp, Georgia Pacific, International Paper, Irving Pulp & Paper, Metso Power, Mead-Westvaco, Stora Enso Research, Tembec, and Votorantim Celulose e Papel
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