Pending riser fluidization
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The raw material riser in our unit never achieves proper fluidization; the inventory level in the stripping section fluctuates greatly. Since plug valves tend to malfunction frequently, it’s risky to use automatic control, which makes it very difficult to manage the inventory level. Please share your suggestions, dear experts
Adjust the air flow for loosening of key points; check that the catalyst particle size distribution remains stable
Is it a coaxial device? Did you provide too few parameters? Have you ruled out each possible cause one by one? Reaction pressure, temperature, and vulcanization influence each other; let’s take some photos of the fluctuations so that I can diagnose the parameters for you
If this occurs at the beginning of operation, one can try adjusting anything that is loose on the standpipe; otherwise, contact *the instrumentation team to check the volume stored in the settler. This situation occurs in the later stages of the installation, likely because the coke from the settler has entered the vertical pipe!
There are many factors that prevent large pieces of coke from falling out of the settler; it’s impossible to determine the cause without relevant parameters. The key is to maintain stable pressure differences, and then identify the reasons for any fluctuations in these pressures – try adjusting the flow rate of the fluidizing air