Raw Material Efficiency Method and Process
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United States of America Patent
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Issued Date -
Aug 27, 2009
app pub date -
Feb 27, 2008
filing date -
Feb 27, 2008
priority date (Note) -
Abandoned
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Abstract
A method and apparatus are disclosed for controlling product discharge from a fluidized bed reactor and for minimizing the loss of the unreacted monomer in the fluidizing gas upon removing the solid polymer product from the reactor. The method and apparatus utilize at least one detector in the product tank or its vent line and a control system in communication with the detector and the product tank fill valve, along with certain algorithms, to adjust by an iterative process, the product discharge time, thereby maximizing resin fill in the product tank and minimizing the lost reactor gas volume.
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