METHOD AND APPARATUS FOR DETECTING AGGLOMERATES

摘要

PURPOSE: A method and apparatus is provided to detect agglomerates formed in a mixed phase container such as a fluidized-bed olefin polymerization reactor container, and for fluidized-bed olefin polymerization. CONSTITUTION: A protecting tube(51) is disposed inside the mixed phase container with one end fixed to the inside of the mixed phase container and the other end projecting freely into the mixed phase container. A detecting rod(60) is inserted into the free end of protecting tube(51) and fixed to the protecting tube(51) with a part of the detecting rod(60). Magnets(61) are mounted in a uniform magnetic flux on the free end of the detecting rod(60) and is movable about a point F1 of the detecting rod(60) as a fulcrum. Agglomerates in the mixed phase container are detected by measuring magnetic flux fluctuations produced by movement of the magnets(61).