Detection of dynamic fluidized bed level in a fluidized bed polymerization reactor using ultrasonic waves or microwaves
US6460412B1 · kind B1 · utility
21Cited by
24References
20Claims
0Family size
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Key dates
| Filing date | Oct 27, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Dec 2, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02854
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The dynamic fluidized-bed level in an olefin polymerization reactor is determined by radar or ultrasound waves. Echoes are processed to take into account the turbulence caused by bubbles, which can be as large as four meters in diameter, bursting on the surface, expelling resin particles into the freeboard above the dynamic fluidized-bed level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.