How to calculate the reduced-pressure extraction rate
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I would like to ask everyone: what exactly is the decompression extraction rate – is it the amount of decompressed product divided by the amount fed into the decompression furnace, or is it the amount of decompressed product divided by the total amount processed by the atmospheric and vacuum distillation unit?
Calculating based on the latter is the current practice.
The vacuum distillation yield refers to the amount of vacuum-distilled products divided by the total amount of crude oil processed by the atmospheric and vacuum distillation unit, that is, the total amount of crude oil treated. The yield is the proportion of the total amount of products from the tops of the fractionating columns, as well as the side streams, to the amount of crude oil processed. The primary extraction rate of crude oil is one of the key indicators used to evaluate atmospheric and vacuum distillation units. An increase in this extraction rate improves the utilization rate of crude oil, reduces the load on downstream units, and lowers the energy consumption associated with the reprocessing and transportation of oil products throughout the refinery. This post was last edited by bingyu252 on 2008-1-7 12:37.]
The reduced-pressure withdrawal rate should be the ratio of the reduced-pressure withdrawal amount to the amount of raw material fed into the device.