The issue of reaction depth
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When the reaction depth increases, how should the distillation tower be adjusted to ensure that the quality of diesel products remains satisfactory? Should the diesel extraction temperature be controlled higher or lower compared to before?
A greater reaction depth will increase the dry point of gasoline; the temperature at the top of the distillation tower will rise, and the gasoline yield will increase. When using cooling reflux, attention should be paid to diesel – the extraction temperature for diesel should be reduced appropriately
With a greater reaction depth, more light components are produced. When the distillation process remains unchanged, the amount of diesel component increases, the extraction volume rises, and the dry point goes up as well. Accordingly, the reflux rate is increased and the reflux temperature is lowered to maintain the extraction temperature; this way, there are fewer issues with product quality
The oil and gas partial pressures are high, so the diesel extraction temperature is set high.