Process and apparatus for the polymerisation of olefins
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United States of America Patent
Stats
-
Jul 18, 2017
Issued Date -
N/A
app pub date -
Jun 16, 2016
filing date -
Dec 20, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Process for the gas-phase polymerization of olefins in a fluidized bed reactor, by a) passing a fluidizing gas containing an olefin monomer through a fluidized bed of polymer particles in the presence of a polymerization catalyst, b) withdrawing a first gaseous stream containing solid particles from the reactor, c) passing the first gaseous stream to a gas/solids separator, separating solid particles, and forming a second gaseous stream containing residual solid particles, d) passing a portion of the second gaseous stream to a heat exchanger(s) to remove heat and e) recycling a portion of the cooled stream from (d) as the fluidizing gas in (a). The fouling rate of the heat exchanger (s) is such that i) the increase in pressure drop across the heat exchanger is equivalent to less than 5%/year, and/or ii) the decrease in heat transfer of the heat exchanger is equivalent to less than 5%/year.
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International Classification(s)
- 2016 Application Filing Year
- C08F Class
- 2412 Applications Filed
- 1861 Patents Issued To-Date
- 77.16 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C08F Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 18, 2029 |
