Catalytic cracking unit
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What is the design velocity value for oil and gas pipeline design? What are the advantages and disadvantages of cold walls and hot walls?
I have a suggestion for the poster: it would be better to clarify the question you want to ask in your topic, otherwise it might be easily mistaken for a duplicate post. Answering your question: The answer can be found in the three books on catalytic cracking.
It is generally 35–45 M/S, but in practice this speed cannot be achieved; the coking rate of the cold wall is lower than that of the hot wall