02 / Operations

Precision cryogenics, engineered for uptime

The plant is built around a single deep-cut cryogenic train using turbo-expander refrigeration — the reference technology for high-recovery NGL extraction from associated gas.

DWG-IMN-PFD-001 / Rev. BSimplified Process Flow — 50 MMSCFD Train
  1. 01

    Inlet Slug Catcher

    V-101
  2. 02

    Amine + TEG Dehydration

    U-201
  3. 03

    Molecular Sieve & Hg Guard

    U-301
  4. 04

    Turbo-Expander Cold Box

    K-401
  5. 05

    De-ethanizer / Fractionation

    T-501
  6. 06

    LPG · NGL Storage

    S-601
Inlet: 50.0 MMSCFD @ 1,050 psigCold box duty: −95 °CResidue gas: 44 MMSCFD

Unit Operations

01

Inlet Reception & Compression

Slug catching, filtration and multi-stage centrifugal compression stabilise raw associated gas before treatment.

02

Acid Gas & Dehydration

Amine sweetening followed by TEG and molecular-sieve drying takes water content below 0.1 ppmv to protect the cold box.

03

Turbo-Expander Cold Box

Isentropic expansion drops the stream to −95 °C, condensing C3+ components for deep liquid recovery.

04

Fractionation & Storage

De-ethaniser and de-butaniser columns split the liquids into on-spec LPG and condensate held in pressurised storage.

Close-up of cryogenic valves and flanged process piping with frost
Logistics

LPG is trucked from an on-site loading gantry to depots across Edo, Delta and Ondo States. Residue gas is metered into the regional pipeline network under long-term off-take.