Re: controlling fisheyes in pulp drying

Probably to act as a dispersant, in an attempt to reduce the size of
contaminants.  The alternative is to take the opposite approach, cause the
contaminants to collect making your existing cleaning system more efficient
and operate the way it was designed originally. check web site:
http://www.in2tec.net (look for Enessco).

I check the board only occasionally, write back if you need help from a
chemical engineer.
Steve R.

---------orig-----------
We operate an old pulp flash drying plant. In the past the mill
had problems with fisheyes in the pulp and added SO2 to deal with
problem. The mill continues to use SO2, however the reason for this
solution is unknown and the SO2 is causing severe corrosion damage
to the surrounding buildings. Does anyone know what the SO2 does to
stop fisheyes and is there an alternative?