ADVANCED EXTRACTION TECHNOLOGIES, INC.

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Technology

Liquids Recovery / Nitrogen Rejection

The AET nitrogen rejection technology utilizes non-cryogenic absorption to separate methane and heavier hydrocarbons from nitrogen containing natural gases.  If desired, propane plus NGL product can be produced.  The absorbed methane and heavier hydrocarbons are flashed off from the solvent by reducing the pressure of the absorbed bottoms stream in multiple steps to minimize gas compression.

The separated gases leave as the sales gas product. The liquid from the proven heatless flash regeneration step is returned to the top of the methane absorber as lean solvent.

If helium is present, the overhead stream from the methane absorber is further processed in a membrane/PSA unit to produce Grade A helium and nitrogen product is available at high pressure. If desired, the AET Process^® NRU may be cost-effectively integrated with C3+ NGL and helium recovery. For most applications there are no solvent makeup requirements.
 

Madisonville, Texas - An AET NRU (in center of photo below; amine plant is at right) 15 MMscfd Start-Up: August 2003