Minimize MEG deterioration and losses, reduce operating and environmental costs
MEG is one of the most commonly used reagents for hydrate inhibition in production pipelines. It is recovered and reinjected to minimize the operating and environmental costs associated with MEG replacement and disposal.
PUREMEG MEG reclamation and regeneration units not only regenerate the MEG by boiling off the pipeline water, they also remove salts and other solids to achieve the required outlet glycol purity. Dissolved salts in formation water, pipeline production chemicals, and pipe scale all have the potential to scale or foul both subsea and topside processing equipment. This MEG recovery system is therefore an essential component of pipeline flow assurance.
The cost of MEG replacement can surpass millions of dollars per year. Our proprietary brine displacement and divalent salt removal systems minimize both MEG deterioration and losses, significantly reducing MEG replacement requirements compared with competing systems.
Improve operational efficiency, increase plant availability, and maintain asset integrity
In addition to our reclamation technology, we can provide customized site support contracts covering training, installation, commissioning and startup to long-term operational assistance, data acquisition, conditional monitoring, and predictive maintenance services.
Our dedicated MEG Reclamation R&D facilities at the University of Manchester in England and at our Technology Center in Houston support product development and provide testing of your process fluids as part of our life-of-field program.
The unit provides effective and proven salt removal. Low solids levels in the recycle loop protect the most expensive and vulnerable parts of the system from abrasion, erosion, and fouling, which reduces maintenance and increases plant availability. Salt separation at ambient temperatures improves safety and avoids the need for specialized equipment.
The technology significantly reduces MEG losses and produces a waste stream suitable for marine disposal, by separating salt from brine. Solids removal is achieved without the use of centrifuges, unlike other systems on the market. This avoids use of expensive, high-maintenance equipment and prevents oxygen contamination of the MEG. (Oxygen is a main contributor to MEG degradation and material corrosion within reclamation systems, impacting both opex and the life of the plant.)
The MEG reboiler is designed to avoid hydrocarbon foaming and the fouling of packing associated with conventional systems. The proprietary divalent salt removal system is capable of handling a diverse range of water chemistries, solids loadings, and particle-size distributions.
The dedicated reaction vessel optimizes crystal growth in the precipitation of divalent salts. Crystal size and shape directly influence the performance of downstream separation and drying processes. A wash step is included as part of the divalent salt removal system, enabling MEG recovery and reducing opex; the salt discharge can be dried for easier handling and disposal.