Corrosion Analysis of Stainless Steel
Summary:
Ten years ago with the increase of fuel prices, upper
combustion burners of solid fuel were being replaced by
lower combustion burners due to a longer burning cycle
of loading and higher coefficient of efficiency. The temperature
of smoke, released from these types of burners is lower
than 200 0C. When the products of combustion cool down
on the top of a chimney, water steam condenses [1, 2].
The condensate is made of various compounds, including
sulfur as well. The saturated condensate erodes the chimney
and the soot that sticks in the place, where the condensate
forms, blocks the chimney. The saturated place of the
chimney becomes more transcalent and the fume is cooled
more intensively; thus, the process speeds up and lower
parts of the chimney saturate with the condensate as well.
These types of troubles could be avoided by fitting in
a steel insert that weighs several kilograms. The insert
heats up very fast and the due point is passed over the
period of 10-20 minutes as the air-gap between the chimney
and the insert contains quite a high resistance. However,
the majority of stainless steel is acid nonresistant;
and the products of corrosion can include poisonous compounds
of chromium and nickel. In this article, we analyze the
corrosion of chimney parts made of stainless steel under
the conditions of acid environment. Several types of stainless
steel were examined.
Format:
Pages :19
Size: 176 kb
Author :Seifedine Kadry
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