engleski

Dividing wall columns for NGL fractionation

The development of Floating LNG plants (FLNG) has resulted in a focus on reducing the weight and size of the topside processing facilities for these units. The conventional fractionation of NGL in LNG plants implies a direct sequence of three or more conventional distillation columns requiring different levels of refrigeration. The results of a feasibility study are described, indicating that a packed three-product dividing wall column (DWC) could replace conventional deethanizer and depropanizer columns. This could provide energy, hardware and footprint benefits, with consequent savings in weight and cold utilities on the topside processing plant onboard FLNGunits.

Distillation, Dividing Wall Column, DWC, NGL recovery, Floating LNG

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