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Addressing SO2/SO3/Hg/Corrosion Issues in Oxyfuel Combustion Boiler and Flue Gas Processing Units

Technical Report

1 December 2011

Capture

Stanley Santos

Citation: IEAGHG, "Addressing SO2/SO3/Hg/Corrosion Issues in Oxyfuel Combustion Boiler and Flue Gas Processing Units", 2011-18, December 2011.

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Publication Overview

The workshop consisted of two full days, with 3 keynote addresses presented by Prof. Terry Wall (Newcastle University), John Pavlish (EERC) and Prof. Axel Kranzmann (BAM) which review the current understanding on the fate of sulphur and Hg, and corrosion issues during oxyfuel combustion. The keynote addresses were followed by 24 presentations covering the following topics:

Publication Summary

  • Discussion about the reliability of SO3 measurements and previously published data on this area of work should be reviewed. It is essential that all SO3 measurements and published should also include temperature data to be able to established a more consistent database.
  • Measurements of SO3 using “Controlled Condensation Technique” and “Isopropanol” Technique are all acceptable methods that could be used during oxyfuel combustion. However, care should be taken in the control of temperature and ash filtration during any experimental work.  Furthermore, biased with the use of the Isopropanol technique should require more evaluation when operating under oxyfuel combustion condition.
  • Continuous measurements techniques in a real power plant setting should be develop to address the needs of oxyfuel combustion power plant to monitor SO3 emissions in all critical areas of operation (i.e. recycled flue gas duct, ESP, etc…).

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