Patent · US Expired

Static measurement and detection in a gas phase polyethylene reactor

US6831140B2 · kind B2 · utility

14Cited by
9References
12Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 20, 2003
Grant dateDec 14, 2004
Priority date
Expiry dateNov 20, 2023

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S526/901
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

The invention relates to a method for evaluating the condition of a fluidized bed reactor by examining the condition of the reactor wall. Specifically, the invention relates to a method for measuring static in the reactor using a static probe that is located at the distributor plate and comprises a distributor plate cap. The invention also relates to methods of determining a static level using a radio frequency (rf). The static measurements are provided to indicate or predict major continuity disturbances in the fluidized bed gas phase reactor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.