Regarding the hydrogen-to-oil ratio
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In hydrorefining of gasoline and diesel, a portion of the wax oil at the bottom of the distillation tower is returned to the feed tank as long-cycle oil; rapid cooling hydrogen is injected between the reactor beds. Should rapid cooling hydrogen and long-cycle oil be taken into account when calculating the hydrogen-to-oil ratio? Should it be the volume of recycled hydrogen compared to the volume of fresh feed, or the volume of recycled hydrogen compared to the volume of oil at the outlet of the feed pump, or should recycled hydrogen and cooled hydrogen be considered together?
The circulating hydrogen ratio is the volume of oil at the outlet of the feed pump. The hydrogen-to-oil ratio is calculated based on the conditions at the inlet to the reactor
Agree with the opinion above; calculate based on the feeding conditions
Distribution of feed oil and hydrogen over the catalyst before entering the reactor； The circulating oil you mentioned is actually considered part of the feedstock ；