Influence of composition on the formation of melt near the floor tubing of kraft recovery boilers

R Backman, Mikko Hupa, Berndt Södergård, M Pulliainen, C Svensson

    Research output: Chapter in Book/Conference proceedingConference contributionScientificpeer-review


    Smelt bed samples from kraft recovery boilers were taken and chem. anal. was made at different depths in the smelt bed.  Lab. measurements with synthetic salt mixts. were done as well as measurements of elec. cond. of Li2CO3 and Na2CO3 melting salt mixts.  The results show that sulfur, chlorine and potassium can enrich in the lowest layer of the smelt bed.  The change in compn. can lead to formation of molten phase at temps. near floor tube metal temps.  Already a small amt. of melt causes the elec. cond. to increase with several orders of magnitude.  Theor. calcns. support the exptl. findings.
    Original languageUndefined/Unknown
    Title of host publication10th International Symposium on Corrosion in the Pulp and Paper Industry
    EditorsT Hakkarainen
    ISBN (Print)951-38-5724-7
    Publication statusPublished - 2001
    MoE publication typeA4 Article in a conference publication
    Eventconference; 2001-08-21; 2001-08-24 - Marina Congress Center, Helsinki, Finland
    Duration: 21 Aug 200124 Aug 2001


    Conferenceconference; 2001-08-21; 2001-08-24

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