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Survey of Recent Years Corrosion Damage Development in the Swedish Pulp and PaperIndustry

机译：瑞典制浆造纸工业近年来腐蚀损伤发展概况

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Pressure vessels and piping in the pulp and paper industry are subject toinspections with intervals of one year or more. The damage observed during inspections is evaluated and recorded, which makes comparisons over the years possible. During recent years a rapid corrosion damage development of various process components has been noticed. The reasons for this accelerating corrosion rate and typical equipment attacked are discussed in the paper. One important factor is the rapid development of new and refined processes to achieve higher quality products. Existing equipment is sometimes used under service conditions deviating considerably from design data. Another important factor is the strong tendency to closing up the systems for minimizing wastage to the surroundings caused by increased environmentals demands. Closing up the systems affects the compostions of process chemicals and causes accumulation of detrimental species.

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