Catalytic cracking unit
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Gentle masters! I have a question: What material is used for the stripping steam pipeline in the stripping section of the catalytic cracking unit? Will erosion occur as the catalyst flows downstream? Will the catalyst fluidization state resulting from the counter-current contact with the stripping steam accelerate wear and erosion? ? What materials are everyone using? Has wearing out occurred? ?
Is there no answer? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
0Cr18Ni9TI. The old devices used to wear through it. Basically at the stripping steam loop and its nozzles.
The outer part of our two components is made of CR5MO, while the inner part is made of carbon steel; lining protection is added in areas prone to erosion
Yes, the original design was carbon steel. This is also why problems arose with the previous small catalytic cracking units; hence questions were raised regarding the construction of new units. Thank you
Yes, the original design was carbon steel. This is also why problems arose with the previous small catalytic cracking units; hence questions were raised regarding the construction of new units. Thank you
Yes, the original design was carbon steel. This is also why problems arose with the previous small catalytic cracking units; hence questions were raised regarding the construction of new units. Thank you
I have another question: Why is the material outside the two components Cr5Mo, while the material inside them is carbon steel? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?
Our catalytic unit uses 0cr18ni10ti for the stripping steam. The catalyst and steam pipes are frequently flushed during operation. There must be times when it wears out.
I think it was 0cr18ni9; it was also ground through. Preplans were also made for this, to prevent oil and gas from the gas section from entering the regenerator due to steam fluctuations.