Method and apparatus for detecting agglomerates

Abstract

Agglomerates 20 in a mixed phase container 1 are detected by measuring strain in a detecting rod 50 disposed in the mixed phase container 1 in which a mixed phase of gas and powders is formed. The detecting rod 50 is disposed at an insertion angle θ in the range from 20 degrees to 70 degrees with relation to the flow of gas and powders.

What is claimed is:  
     
         1 . A method for detecting agglomerates in a mixed phase container by measuring strain in a detecting rod disposed in said mixed phase container in which a mixed phase of gas and powders such as products of the olefin polymer and/or catalysts is formed, wherein said detecting rod is disposed at an insertion angle in the range from 20 degrees to 70 degrees with relation to the flow of gas and powders.  
     
     
         2 . A method for detecting agglomerates according to  claim 1 , wherein the detecting rod is disposed horizontally at an insertion angle in the range from 20 degrees to 70 degrees with relation to the flow of gas and powders.  
     
     
         3 . A method for detecting agglomerates according to  claim 1 , wherein a distributor plate is disposed on the bottom of said mixed phase container for diffusing the gas in a horizontal direction, and said detecting rod is positioned at a predetermined height above said distributor plate.  
     
     
         4 . An apparatus for detecting agglomerates in a mixed phase container by strain detecting means in a detecting rod disposed in the mixed phase container in which a mixed phase of gas and powders is formed, wherein said detecting rod is disposed at an insertion angle in the range from 20 degrees to 70 degrees with relation to the flow of gas and powders.  
     
     
         5 . An apparatus for detecting agglomerates according to  claim 4 , wherein said detecting rod is disposed horizontally at an insertion angle in the range from 20 degrees to 70 degrees with relation to the flow of gas and powders.  
     
     
         6 . An apparatus for detecting agglomerates according to  claim 4 , wherein a distributor plate is disposed on the bottom of said mixed phase container for diffusing the gas in a horizontal direction, and said detecting rod is positioned at a predetermined height above said distributor plate.  
     
     
         7 . A fluidized-bed olefin polymerization reactor wherein a mixed phase of gas and powders is formed, said reactor comprising an apparatus for detecting agglomerates in said mixed phase, said apparatus having a detecting rod for measuring strain when said agglomerates collide thereto, wherein said detecting rod is disposed at an insertion angle in the range from 20 degrees to 70 degrees with relation to the flow of gas and powders.  
     
     
         8 . A fluidized-bed olefin polymerization reactor according to  claim 7 , wherein the detecting rod is disposed horizontally at an insertion angle in the range from 20 degrees to 70 degrees with relation to the flow of gas and powders.  
     
     
         9 . A fluidized-bed olefin polymerization reactor according to  claim 7 , wherein a distributor plate is disposed on the bottom of said mixed phase container for diffusing the gas in a horizontal direction, and said detecting rod is positioned at a predetermined height above said distributor plate.  
     
     
         10 . An olefin polymerization method, comprising: 
 detecting agglomerates in a mixed phase container by measuring strain in a detecting rod disposed in said mixed phase container in which a mixed phase of gas and powders is formed, wherein said detecting rod is disposed at an insertion angle in the range from 20 degrees to 70 degrees with relation to the flow of gas and powders; and    removing said agglomerates from said mixed phase container.    
     
     
         11 . An olefin polymerization method according to  claim 10 , wherein the detecting rod is disposed horizontally at an insertion angle in the range from  20  degrees to  70  degrees with relation to the flow of gas and powders.  
     
     
         12 . An olefin polymerization method, according to  claim 10 , wherein a distributor plate is disposed on the bottom of said mixed phase container for diffusing the gas in a horizontal direction, and said detecting rod is positioned at a predetermined height above said distributor plate.  
     
     
         13 . A method for manufacturing an olefin polymer, said method comprising: 
 detecting agglomerates in a mixed phase container by measuring strain in a detecting rod disposed in said mixed phase container in which a mixed phase of gas and powders is formed, wherein said detecting rod is disposed at an insertion angle in the range from  20  degrees to  70  degrees with relation to the flow of the gas and powders; and    removing said agglomerates from said mixed phase container.    
     
     
         14 . A method for manufacturing an olefin polymer according to  claim 13 , wherein the detecting rod is disposed horizontally at an insertion angle in the range from 20 degrees to 70 degrees with relation to the flow of gas and powders.  
     
     
         15 . A method for manufacturing an olefin polymer according to  claim 13 , wherein a distributor plate is disposed on the bottom of said mixed phase container for diffusing the gas in a horizontal direction, and said detecting rod is positioned at a predetermined height above said distributor plate.