Questions regarding reactor modification
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What are the key operating points for changing the riser outlet from a distribution pipe to a T-type quick separator? Please give your advice
It’s best to consult the renovator, as he is the most authoritative. For reference.
Why make such a change? Ask about the design
The riser outlet has been changed from a distribution tube to a T-shaped one, reducing pressure drop; this improves the selectivity of primary cracking and lowers the amount of coke produced.
There are no special precautions needed; the material level in the stripping section should not be too high