I’ve been thinking about writing a paper on the hot spot analysis of two types of components in catalytic devices; could anyone give me some suggestions?
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Our catalytic unit has a capacity of 1.2 million tons per year; it was put into operation in 1988 and is of the coaxial catalytic type. Perhaps due to the long passage of time, hot spots may also appear on these two devices. However, this time, just 9 months after it was put into operation following maintenance, several hot spots emerged, such as on the external circulation pipe, the regeneration inclined tube, and the settler. Regarding these issues, I have recently thought about writing a paper on the hot spot analysis of two components in catalytic devices. Could everyone give me some suggestions? It would be even better if you could provide me with some relevant materials Thank you, all the masters! ! !
The device where hot spots occur most frequently here is the external heat exchanger; the inclined tubes of the external heat exchanger and the flue gas return pipes of it are prone to liner detachment
I have an idea: generally, the combination of the supplementary lining material with the existing lining material is not very good. If possible, it’s best to take the time to manufacture everything from scratch; if that’s not feasible, more effort must be invested. When heating the lift pipes, it’s necessary to follow the specified temperature rise curve carefully and conduct thorough inspections. During operation, large adjustments should be avoided to prevent the lining from coming loose. Areas where the lining is likely to detach are those with significant structural changes, such as the Y-shaped sections and inclined tubes. The lining inside the regenerator is more durable than that in areas like inclined tubes, and experience has confirmed this.
I remember that once, in an effort to meet a deadline, we didn’t replace the lining that needed to be replaced, nor did we reinforce the areas that required reinforcement. As a result, in less than three months, we were forced to halt work to address these issues! As a result, huge costs were incurred, and the device ended up having the longest operational cycle in history! What problem does this illustrate?