TY - RPRT
T1 - High Temperature Corrosion of Superheater Materials for Power Production through Biomass
AU - Montgomery, Melanie
AU - Maahn, Ernst emanuel
AU - Nielsen, Karsten agersted
AU - Gotthjælp, K.
AU - Brøndsted, Povl
AU - Jansen, Piet
N1 - EPF94 Project
PY - 1996
Y1 - 1996
N2 - The aim of the present study has been to establish a fundamental
knowledge of the corrosion mechanisms acting on materials for use
in biomass fired power plants. The knowledge is created based on
laboratory exposures on selected materials in well-defined
corrosive gas environments. An experimental facility has been
established wherein the planned exposures are completed. Specimens
were exposed in combined synthetic flue gas at temperatures up to
900C. The specimens could be cooled to 300C below the gas
temperature. Gas flow and gas mixture can be varied according to
the conditions found in a power plant boiler. The experiments
using this facility includes corrosion studies of two types of
high temperature resistant steels, Sandvik 8LR30 (18Cr 10Ni Ti)
and Sanicro 28 (27Cr 31Ni 4Mo)investigated at 600Cin time
intervals up to 300 hours. The influence of HCl (200ppm) and of
SO2 (300 ppm) on the corrosion progress has been investigated.In
addition the corrosion behaviour of the same materials was
investigated after having been exposed under a cover of ash in air
in a furnace at temperatures of 525C, 600C and 700C. The ashes
utilised are from a straw-fired power plant and a synthetic ash
composed of potassium chloride and potassium sulphate.
AB - The aim of the present study has been to establish a fundamental
knowledge of the corrosion mechanisms acting on materials for use
in biomass fired power plants. The knowledge is created based on
laboratory exposures on selected materials in well-defined
corrosive gas environments. An experimental facility has been
established wherein the planned exposures are completed. Specimens
were exposed in combined synthetic flue gas at temperatures up to
900C. The specimens could be cooled to 300C below the gas
temperature. Gas flow and gas mixture can be varied according to
the conditions found in a power plant boiler. The experiments
using this facility includes corrosion studies of two types of
high temperature resistant steels, Sandvik 8LR30 (18Cr 10Ni Ti)
and Sanicro 28 (27Cr 31Ni 4Mo)investigated at 600Cin time
intervals up to 300 hours. The influence of HCl (200ppm) and of
SO2 (300 ppm) on the corrosion progress has been investigated.In
addition the corrosion behaviour of the same materials was
investigated after having been exposed under a cover of ash in air
in a furnace at temperatures of 525C, 600C and 700C. The ashes
utilised are from a straw-fired power plant and a synthetic ash
composed of potassium chloride and potassium sulphate.
KW - Industrielle materialer
M3 - Report
SN - 87-550-2205-7
T3 - Energiministeriets Forskningsudvalg for produktion og fordeling af el og varme. Brændsler og forbrændingsteknik
BT - High Temperature Corrosion of Superheater Materials for Power Production through Biomass
PB - Risø National Laboratory, Roskilde. Force Institute, Copenhagen
CY - Technical University of Denmark, Lyngby
ER -