Regarding the hot hydrogen stripping temperature for diesel hydrogenation protection tanks, what temperature do you think is appropriate? Can 100°C meet the demolding requirements?
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In diesel hydrogenation (with a high pressure of 3.5 MPa and a reactor temperature of 330°C at the end of the process), two protection tanks are installed at the reactor inlet, and the contents of these tanks are periodically removed. However, it is necessary to ensure the appropriate temperature for hydrogen stripping during this process. Currently, the cycle hydrogen, with a temperature of 110°C (the design value), is fed through a purge line to the inlet of the protection tanks in order to carry out hydrogen stripping; the estimated temperature in this case is 100°C. Is this sufficient to meet the requirements for removing the contents from the tanks? Does anyone have similar experience? It’s about whether the oil can be cleaned thoroughly at 100°C and how long it takes
What is the basis, experience or calculation?
What temperature is required for oil in the reactor cycle hydrogen?
When switching the protection tank, the circulating hydrogen temperature is only around 110 degrees. Personal opinion: Use hot hydrogen to fill the protective tank; monitor the outlet temperature until it reaches around 100 degrees. Then shut off the inlet hydrogen flow and use high-pressure nitrogen for purging, directing the outlet to the vent tank. Check whether the liquid level in the vent tank rises… If it doesn’t rise, it means the protective tank contains oil, and enough oil has been introduced. The above are purely personal opinions; they haven’t been put into practice... I’m afraid they might mislead others
The temperature for diesel thermal hydrogen with oil is generally around 290°C; it is difficult to handle in low-temperature catalysts.
Is this the temperature of the paraffin oil? The normal reaction inlet temperature for diesel is around 300-330
350? Won’t such high temperatures reduce the catalyst?