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Recently, the raw materials used in the pretreatment stage of our unit’s reforming facility started to contain water after the change of storage tanks for the naphtha used in that process. This issue was not detected until abnormal levels were observed at the pre-hydrogenation stage as well as in terms of liquid level. Half an hour later, the hydrogen production rate from the reforming process dropped significantly; the temperature there decreased from 130 degrees to 90 degrees, before returning to 105 degrees after six hours. As a result, the hydrogenation unit had to operate at reduced capacity. I would like to ask whether this situation could lead to water entering the reforming reactor Is an accident like this serious? Will it be able to return to normal levels in the future? Thank you!
The temperature drop during the reaction has decreased significantly – why isn’t this taken into account in the reactor? Generally, when the raw material water level is high, short-term hydrocracking reactions increase; over time, as the catalyst loses chlorine, the temperature gradually rises again, but the specific surface area of the catalyst decreases significantly.
The reforming reactor definitely contains water; under such conditions, the catalyst’s activity is bound to be impaired, and the production cycle will inevitably be shortened. It will take at least 14–20 days to resume production of 93# gasoline!
The temperature drop in your system is only 130 – it’s a fixed-bed system with high water flow rates, so of course there’s an impact, just as mentioned on the second floor.
Check the water content in the oil at the bottom of the fractionation tower; only after it meets the specifications should it proceed to the reforming process
Water in the reforming feedstock generally does not enter the reforming reaction system. Unless there are operational errors in the stripping tower or distillation tower. There is an abnormality in the level gauge of the pre-hydrogenation high-pressure tank; could it be that there are no fluctuations in the pressure, temperature, or liquid level of the stripping tower or distillation tower at this time?