EDUCTOR SENSOR SYSTEM
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United States of America
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Issued Date -
Jan 6, 2022
app pub date -
Jun 9, 2021
filing date -
Jun 9, 2021
priority date (Note) -
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Abstract
An automatic variable speed eductor recirculation system for metal recycling furnaces having a delacquering chamber and a separate heating chamber. The system includes a recirculation duct between the two chambers, an eductor in the duct, a variable speed blower forcing motive gases into the eductor creating a Venturi that draws VOC's from the delaquering chamber through the eductor, and an infrared opacity sensor proximate the eductor that measures the transparency level of the gases in the eductor. An electronic controller automatically adjusts the blower speed to control the eductor Venturi based upon the transparency level measurements of the opacity sensor.
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