دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: an attachment to a natural gas line for a burner head that forms a burner port modified for a specific application. The burner tip represents the end of the transportation of natural gas from the wellhead and includes its consumption. By definition, it also includes its consumption as a feedstock (an ingredient in manufactured products) and its use in pipeline operations and other overhead activities.

n: the vapour stream leaving the top of a tower, column, or vessel.

n: in distillation, the product that condenses above the fractionation column.

n: in distillation, the stream of products that condense above the fractionating column.

n: in the distillation process, that part of the condensed overhead stream that is returned to the fractionating column as a source of cooling. v: in distillation extraction of fluids from a core, to use a solvent to flow over a core sample a second time to clean it.

n: a relative measurement of the volume of reflux in the distillation process. The ratio is commonly expressed as the quantity of reflux divided by the quantity of net overhead product.