Low-temperature cobalt-molybdenum catalyst shutdown!
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Are there any temperature requirements for shutting down low-volatility cobalt-molybdenum catalyst systems? Is maintaining heat and pressure sufficient?
1# For gentle airflow and flow of liquid, it depends on the duration of the shutdown. In the case of a short-term shutdown, it is sufficient to keep the temperature 100 degrees below the hot spot while maintaining pressure. For a long-term shutdown, the transformer and the system need to be disconnected; before doing so, the temperature should be reduced to room temperature