Modelling Flare Gas Recovery System for Recovery and Utilization of Stranded Associated Gas in the Niger Delta

In this paper, the modeling of a flare gas recovery system (FRGRS) for and utilization stranded associated in Niger Delta region Nigeria was investigated. The is novel modular plant with several integrated units operational features. FGRS modeled recovery, treatment, processing gas. Two cases were considered, one compression treated from to pipeline as sales while other conversion premium transport liquids by gas-to-liquids technology. 25 MMScfd recovered used feedstock it yielded 23.22 MMscfd natural 1.77 Mscfd acid met all specifications. GTL plant, an autothermal reforming method synthesis production H2/CO ratio 2.33 which acceptable Fisher-Tropsch reaction downstream. entire simulation Honeywell Unisim Peng-Robinson fluid property package. Gas-to-liquids (GTL) product produced fed 2350 b/d liquid fuels comprising 1100 diesel 1250 gasoline. Economic analyses revealed thata net present value (NPV) US$ 109.9 million realized NPV US$58.5 quality Thus, products represent increase 87.8% when compared that However, Pay-out time (POT) gaswas 1.16 years, internal rate return (IRR) 86% profit-per-dollar invested 16.18. Furthermore, pay-out sale 5.29 18.3% 2.78. project showed may be sold outright (as gas) if market available absence ready gas, could converted are easier store have greater potentials long run.