TY - GEN
T1 - Current understanding of cracking of recovery boiler primary air port composite tubes
AU - Keiser, James R.
AU - Singbeil, Douglas L.
AU - Sarma, Gorti B.
AU - Kish, Joseph R.
AU - Choudhury, Kimberly A.
AU - Frederick, Laurie A.
AU - Yuan, Jerry
AU - Hubbard, Camden R.
AU - Swindeman, Robert W.
AU - Singh, Preet M.
PY - 2003
Y1 - 2003
N2 - Co-extruded 304L stainless steel/SA210 carbon steel tubes have found widespread use in the floors and lower walls of black liquor recovery boilers. However, cracking has been found in the stainless steel layer of these tubes, and the cracks in the tubes that form primary air port openings have been found, in some cases, to advance into the carbon steel portion of the tubes. This causes serious concern about the potential for a tube leak with the possibility of an ensuing boiler explosion. This research has been conducted so as to address possible ways to avoid this cracking: changes in operating procedures, use of alternate tube cladding materials, and modification of the airport design. Results have provided guidance on reducing the likelihood of tube cracking through selection of materials and air port design and operational changes.
AB - Co-extruded 304L stainless steel/SA210 carbon steel tubes have found widespread use in the floors and lower walls of black liquor recovery boilers. However, cracking has been found in the stainless steel layer of these tubes, and the cracks in the tubes that form primary air port openings have been found, in some cases, to advance into the carbon steel portion of the tubes. This causes serious concern about the potential for a tube leak with the possibility of an ensuing boiler explosion. This research has been conducted so as to address possible ways to avoid this cracking: changes in operating procedures, use of alternate tube cladding materials, and modification of the airport design. Results have provided guidance on reducing the likelihood of tube cracking through selection of materials and air port design and operational changes.
UR - http://www.scopus.com/inward/record.url?scp=22144466557&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:22144466557
SN - 1930657307
T3 - TAPPI Fall Technical Conference
SP - 255
EP - 272
BT - 2003 TAPPI Fall Technical Conference
T2 - 2003 TAPPI Fall Technical Conference: Engineering, Pulping and PCE and I
Y2 - 26 October 2003 through 30 October 2003
ER -