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Glycol Regeneration

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Mono Ethyl Glycol (MEG) and Tri Ethyl Glycol (TEG) are widely used for hydrate inhibition in production lines and well shut-ins. However, its effectiveness can deteriorate over time due to contamination with water, scale, rust and break down products from biological activity. Contamination often consists of divalent ions such as Calcium, Magnesium and Iron along with Glycolic and Oxalic acids that inhibit the normal action of the MEG or TEG.

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Waste Minimisation Services (WMS) has developed a patented system for the regeneration of MEG and TEG. The systems saves expenditure and the logistics involved in the disposal and replacement of the contaminated product.

How it Works
 

The Glycol regeneration process comprises of the following stages:
 

  • Initial Filtration to remove any suspended solids down to 25 microns

  • The acids are then absorbed onto a fixed bed media. The acids are absorbed as a magnesium silicate salt on the media bed.

  • The next step is the chelation of the divalent ions onto the fixed bed media.

  • At this point the only contaminate left is water which can either stay in the mixture or can be distilled off according to end customer requirement.

  • There is also an option to remove Radionuclides and Lead if these are present.

Key Advantages
 

  • Allows MEG and TEG to be regenerated and reused without removal from site.

  • Saves on further purchase of MEG and TEG and disposal costs.

  • Fully automated with minimal manpower requirement

  • Small footprint.

  • High throughput (up to 80m3 per hour)

  • Option to remove water

  • Additional options for the removal of mono-valent ions such as Sodium (Na), Chlorine (Cl) and Potassium (K)

  • Additional options for the removal of NORM and Mercury (Hg)

  • The WMS system has proven commercial benefits over other available systems.

Additional Contaminants that can be removed

 

WMS can treat or remove various chemicals and contaminants including:

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  • Hexavalent Chrome (Chrome vi)

  • Oils

  • Cyanide

  • Iron (and Iron Cyanide)

  • Zinc

  • Nickel

  • Copper

  • Magnesium

  • Potassium

  • Lead

  • Radioactive Material

  • Mercury

  • Ammonia

  • Phosphate

  • PAHs

  • PCBs

  • BTEX

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