One Question per Day, September 6, 2015
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When the chimney manhole was opened, it was found that there were many impurities. The possible reasons for this are: A. High H2S content in the exhaust gases; B. Poor insulation of the chimney, resulting in dew point corrosion; C. High CO levels in the flue gas; D. Low exhaust gas temperature
Option B, I guess; dew point corrosion has occurred. Not quite sure.
When the chimney manhole was opened, it was found that there were many impurities. The possible reasons are (ABD): A. High H2S content in the exhaust gases; B. Poor insulation of the chimney, resulting in dew point corrosion; C. High CO levels in the flue gas; D. Low exhaust gas temperature
When the chimney manhole was opened, it was found to contain a large amount of impurities. The possible reasons are (A)
When the chimney manhole was opened, it was found that there were many impurities. The possible reasons are as follows: (B) A. High H2S content in the exhaust gases; B. Poor insulation of the chimney, resulting in dew point corrosion; C. High CO levels in the flue gas; D. Low exhaust gas temperature
A: High H2S content in the exhaust gases. --------
When the manhole of the chimney was opened, it was found that there were many impurities. The possible reasons for this are ( ) A. High H2S content in the exhaust gases-------------------A high level of hydrogen sulfide in the exhaust gases leads to the formation of substances such as elemental sulfur during combustion in the afterburner, which then accumulate in the chimney; therefore, option A is a possible reason. B. Poor insulation of the chimney leads to dew point corrosion – Due to poor insulation, the temperature drops rapidly, causing dew point corrosion in the upper parts of the chimney where there is no lining; therefore, B is possible. C. High flue gas CO------------------------------No impact. D. Low exhaust gas temperature --------------------------- The impact is the same as in B; D is also a possibility. The answers should be: A, B, D.