Bleed and feed device and method
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United States of America Patent
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Sep 10, 2013
Grant Date -
Jul 21, 2011
app pub date -
Jan 18, 2011
filing date -
Jan 18, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
Method for carrying out a bleed and feed of process solutions in a process tank. The feed solution is pumped out of a first tank into a first receiving space. The first receiving space is subsequently emptied into the process tank of with a pump. The volume of delivered feed solution in the process tank is measured. The bleed solution is pumped from the process tank with a pump into a second receiving space. The volume of delivered bleed solution in the second receiving space is measured. The bleed solution in the second receiving space is subsequently emptied into the second tank. The first receiving space differs from the second receiving space. A correction factor is calculated by comparing the measured and calculated volumes of the bleed and feed solution delivered by the pumps, with which correction factor the nominal delivery volume of the pumps are corrected in the next cycle.
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