Regarding the translation of Rundown in sentences (hydrocracking)
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1) Set the unit in closed-loop short circulation at reduced capacity by using the recirculation line that runs from the rundown circuit to the feed surge drum. 2) Ensure that H2S does not reach the fractionator and end up in the rundown products. I would like to ask everyone: what does “rundown” mean in this context?
1) Set the unit in closed-loop short circulation at reduced capacity by using the recirculation line that runs from the rundown circuit to the feed surge drum. 2) Ensure that H2S does not enter the fractionator or end up in the rundown products. It’s easier to understand with a flowchart. 1. Since it is a circuit, it should be understood as: an overflow circuit leading to the raw material buffer tank. 2. Downstream products, right?
1. Typically, the start-up circulation line from the unqualified line to the feed buffer tank is used to put the plant into a closed-loop short-circulation state at the lowest load. 2. Ensure that hydrogen sulfide does not enter the distillation tower or end up in the defective products. \"Downstream\" indeed means the lower part of a flow; it seems to imply something that is \"unqualified\".
rundown = distillate receiving tank rundown tank = tank for receiving distillate rundown circuit = circuit for receiving distillate