Methods for processing and interpreting signals from static and acoustic probes in fluidized bed reactors

Abstract

Provided is a method for operating a gas-phase, fluidized-bed reactor. The method has the steps of (a) receiving a signal from a probe in contact with the interior of the reactor or a process component in communication with the reactor, wherein the signal is derived from a physical property or condition within the reactor or the process component; (b) modifying the signal to create a modified signal; and (c) adjusting one or more operating parameters of the reactor in response to the modified signal if the physical property or condition is different than a desired value. There is also a method for reducing fouling in a distributor plate of a gas-phase, fluidized-bed reactor with a recycle line.

1 - 10 . (canceled) 
     
     
         11 . A method for reducing fouling in a distributor plate of a gas-phase, fluidized-bed reactor with a recycle line, comprising:
 (a) receiving a signal from a probe in contact with the interior of the reactor or the recycle line in communication with the reactor, wherein the signal is derived from a physical property or condition within the reactor or the recycle line;   (b) modifying the signal to create a modified signal; and   (c) adjusting one or more operating parameters of the reactor in response to the modified signal if the physical property or condition is different than a desired value.   
     
     
         12 . A method for operating a gas-phase, fluidized-bed reactor system, comprising: cross-correlating between the signal of one or more acoustic probes and the signal of one or more static probes in a recycle line of a reactor to determine velocity and amount of entrained particles. 
     
     
         13 . The method of  claim 12 , wherein the recycle line of the reactor includes an enhanced fill line. 
     
     
         14 . (canceled) 
     
     
         15 . The method of  claim 12 , wherein fluctuations or variations in each of the signal of one or more acoustic probes and the signal of one or more static probes are recorded at frequencies up to 1 MHz. 
     
     
         16 . The method of  claim 12 , wherein fluctuations or variations in each of the signal of one or more acoustic probes and the signal of one or more static probes are recorded at frequencies up to 100 MHz. 
     
     
         17 . The method of  claim 12 , wherein fluctuations or variations in each of the signal of the one or more acoustic probes and the signal of the one or more static probes are filtered at a roll-off frequency of 10 MHz. 
     
     
         18 . The method of  claim 12 , wherein the fluctuations or variations in each of the signal of one or more acoustic probes and the signal of one or more static probes are recorded at frequencies up to 1 GHz. 
     
     
         19 - 30 . (canceled) 
     
     
         31 . A method for operating a gas-phase, fluidized-bed reactor system, comprising: using one or more static probes to measure charge on a resin in a fluidized-bed of a reactor in the reactor system. 
     
     
         32 . The method of  claim 31 , wherein a signal generated by the one or more static probes is integrated to determine and average charge on the resin. 
     
     
         33 . (canceled) 
     
     
         34 . The method of  claim 31 , wherein the signal of the one or more static probes are recorded at frequencies up to 1 MHz. 
     
     
         35 . The method of  claim 31 , wherein the signal of the one or more static probes are recorded at frequencies up to 100 MHz. 
     
     
         36 . The method of  claim 31 , wherein the signal of the one or more static probes is filtered at a roll-off frequency of 10 MHz. 
     
     
         37 . The method of  claim 31 , wherein fluctuations or variations in each of the signal of the one or more static probes are recorded at frequencies up to 1 GHz. 
     
     
         38 . A method for operating a gas-phase, fluidized-bed reactor system, comprising: measuring direct current from a signal from one or more static probes to determine tribocharging components of the signal. 
     
     
         39 . The method of  claim 38 , further comprising determining the average direct current. 
     
     
         40 . A method for operating a gas-phase, fluidized-bed reactor system, comprising: cross-correlating between the signal of one or more acoustic probes and the signal of one or more static probes in a recycle line of a reactor to determine velocity and amount of entrained particles.