Simulation of the Production of Liquefied Petroleum Gas (Lpg) from Flare Gas System

Abstract

Edeh Ifeanyichukwu and Ikedi Chinaza Stella

Gas flaring is associated with economic loss, health and environmental challenges, resulting from waste of valuable products, blood abnormalities and depletion of ozone layer, respectively. Therefore, there is a need for the recovery of these valuable products from gas flaring system. One of such products is the Liquefied Petroleum Gas [LPG] produced from the liquefaction of the natural gas which could be used as a source of energy. In this work, the maximization of LPG production from flare gas generated from a pretreated natural gas stream was carried out using HYSYS V8.6. Other products obtained from the process include C1, C2 and natural gasoline [C5+]. The results obtained show that the plant can recover 98.5 % LPG from the component of gas feed. This is a huge improvement on the 92 % recovery in a typical conventional plant. The result of the economic analysis show that the plant is economical and profitable. The LPG recovered can be used as a source of energy, and the process could help to mitigate climate change, minimize economic loss and health challenges.

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