Method for operating a gas-phase reactor at or near maximum production rates while controlling polymer stickiness
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United States of America Patent
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May 24, 2011
Grant Date -
Mar 15, 2007
app pub date -
Sep 14, 2005
filing date -
Sep 14, 2005
priority date (Note) -
Expired
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Abstract
Embodiments of the present invention relate to operating a gas-phase reactor at or near maximum production rates and to measuring and controlling polymer stickiness in a gas phase reactor polymerization. In particular, embodiments relate to monitoring acoustic emissions in a reactor during gas phase polymerization to determine the onset of reactor stickiness and possibly discontinuity events such as chunking and sheeting resulting from that stickiness. Embodiments also relate to monitoring acoustic emissions to determine the need for effective control of parameters that minimize reactor stickiness and thereby preventing discontinuity events. The emissions are processed by arithmetic averaging.
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