UOP lockhopper
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How does a closed hopper control the catalyst circulation rate? And how is the cycle rate calculated?
Personal opinion: During normal production, the cycle rate is set in advance, and the process specifications usually specify the volume per cycle at a 100% cycle rate. For example, in our facility, 100% corresponds to 907 kg/h. The current production cycle rate is set at 78%, with each cycle lasting 231 seconds; thus, the volume per cycle can be calculated as (907*78*231)/(100*3600)
After the closed hopper is installed, the material is loaded into it. During this process, foreign experts will come in to measure the dimensions of the closed hopper, after which it is filled and the nuclear material level is set
Then add the catalyst to the tank, check the liquid level, and determine the amount of catalyst to use. The volume per hop is determined by the lock hopper buffer trigger. The circulation time of one bucket’s volume of circulation is the controller that regulates the total amount