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Detailed investigation of Cl-corrosion initiated by deposits formed in biomass-fired boilers. Final report

Abstract

The aim was to investigate deposit-induced Cl-corrosion under well-controlled laboratory conditions, simulating the conditions in biomass-fired boilers. This has been done by exposing pieces of superheater tubes, covered by synthetic salts, at temperatures and gas mixtures simulating biomass-fired conditions. The corroded specimens have been studied in detail using a Scanning Electron Microscope (SEM), in order to determine the corrosion rate, and to investigate the chemistry and morphology of the corrosive attack. The project has been divided into four activities: A1: Relationship between the Cl-concentration in the deposit, and the corrosion rate. A2: Influence of cation type (K+ and Na+) on the mobility of Cl in the deposit. A3: Influence of metal temperature on the corrosion rate. A4: Critical evaluation of the existing experience for minimizing corrosion in full-scale boilers firing totally or partly with biomass. (LN)
Publication Date:
Oct 15, 2009
Product Type:
Technical Report
Report Number:
NEI-DK-5460
Resource Relation:
Other Information: PSO-2005; 58 refs., 40 figs., 10 tabs.
Subject:
09 BIOMASS FUELS; 20 FOSSIL-FUELED POWER PLANTS; BIOMASS; BOILERS; CHLORIDES; CORROSION; SUPERHEATERS; DUAL-PURPOSE POWER PLANTS; STRAW
OSTI ID:
1011549
Research Organizations:
Technical Univ. of Denmark. DTU Chemical and BioChemical Engineering, Kgs. Lyngby (Denmark)
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Other: Contract FORSKEL-5820; TRN: DK1101055
Availability:
Also available at http://www.risoe.dtu.dk/rispubl/NEI/NEI-DK-5460.pdf; OSTI as DE01011549
Submitting Site:
DK
Size:
88 p. pages
Announcement Date:
Apr 25, 2011

Citation Formats

Frandsen, Flemming J, and Lith, S van. Detailed investigation of Cl-corrosion initiated by deposits formed in biomass-fired boilers. Final report. Denmark: N. p., 2009. Web.
Frandsen, Flemming J, & Lith, S van. Detailed investigation of Cl-corrosion initiated by deposits formed in biomass-fired boilers. Final report. Denmark.
Frandsen, Flemming J, and Lith, S van. 2009. "Detailed investigation of Cl-corrosion initiated by deposits formed in biomass-fired boilers. Final report." Denmark.
@misc{etde_1011549,
title = {Detailed investigation of Cl-corrosion initiated by deposits formed in biomass-fired boilers. Final report}
author = {Frandsen, Flemming J, and Lith, S van}
abstractNote = {The aim was to investigate deposit-induced Cl-corrosion under well-controlled laboratory conditions, simulating the conditions in biomass-fired boilers. This has been done by exposing pieces of superheater tubes, covered by synthetic salts, at temperatures and gas mixtures simulating biomass-fired conditions. The corroded specimens have been studied in detail using a Scanning Electron Microscope (SEM), in order to determine the corrosion rate, and to investigate the chemistry and morphology of the corrosive attack. The project has been divided into four activities: A1: Relationship between the Cl-concentration in the deposit, and the corrosion rate. A2: Influence of cation type (K+ and Na+) on the mobility of Cl in the deposit. A3: Influence of metal temperature on the corrosion rate. A4: Critical evaluation of the existing experience for minimizing corrosion in full-scale boilers firing totally or partly with biomass. (LN)}
place = {Denmark}
year = {2009}
month = {Oct}
}