Boiler water blowdown control system
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United States of America Patent
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Dec 2, 2003
Grant Date -
N/A
app pub date -
Aug 16, 2002
filing date -
Aug 16, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a method for automatically maintaining the concentration of scale forming minerals in boiler water for boiler systems utilizing bimodal feedwater pumps that deliver a substantially constant feedwater flow to the boiler drum when activated. According to the present invention, the feedwater supply pump and blowdown rate control valve are synchronized to remove boiler water at a predetermined rate when the feedwater pump is activated. The present invention thereby provides a simplified and less expensive method for controlling the concentration of dissolved solids in boiler water despite variations in the steam loads and/or other boiler operation parameters.
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