Search Axens.net

MEG Recovery

Natural gas production leads more and more to the development of deep offshore gas projects under stringent conditions, with the associated risks of hydrate formation, leading to blocked flowlines and potential plant shutdowns.

Different solutions exist to avoid hydrate formation:
• MonoEthylene Glycol (MEG) injection
• Methanol (MeOH) injection
• Low Dosage Hydrate Inhibitor (LDHI) injection
• Heating and insulation of the flowlines

video thumbnail
This content is hosted by a third-party (www.youtube.com).
To view this content, please consent to the use of cookies.

Axens Offer

Injection of MonoEthylene Glycol (MEG) at the wellhead is a widely spread solution for hydrate inhibition and guarantees continuous gas production.
The installation of a MEG regeneration and reclamation system is crucial to recover MEG suitable for re-use.

AdvaMEG®, Axens MEG Regeneration and Reclamation solution, proposes the most reliable response for this purpose. It uses a vacuum distillation and purification system protected by several patents, allowing the removal of water from the rich MEG but also all types of salts (monovalent & divalent salts) coming from reservoir and subsea system. The technology removes contaminants and enables high MEG recovery while minimizing waste effluents.

For each project, AdvaMEG® offers a tailor-made solution with high flexibility, optimizing scheme with specific features adapted to each feedstock. Thanks to its deep experience and knowledge in the field of MEG reclamation, Axens is able to advise on the most relevant scheme depending on project constraints such as compact modular units when space is limited, staged investment approach to reduce initial CAPEX and CO2 emission reduction.

For Each Constraint, an Adapted Scheme

Thanks to the integrated scheme, water and salts are removed in the same unit operating under vaccum to produce a salt free lean MEG. Both monovalent and divalent salts are removed from the MEG without any additional divalent removal unit.

Axens AdvaMEG Integrated scheme

Conditioning

Contaminants removal from the entering rich MEG: 
- Hydrocarbons
- Acid gases
- Corrosion products
-...

Reclamation

Vaporization of both MEG and water under vacuum to produce a concentrated slurry of salts.

Salts Removal

Monovalent and divalent salts removal from the concentrated slurry of salts using vertical basket type centrifuge to achieve high solids cake dryness with low MEG losses.

Overhead Regeneration

Water and MEG separation under vacuum to produce lean MEG at the required concentration and water with low MEG content.

This type of scheme is well adapted when no salts are present in the feedstock, for example during early life of a reservoir.
If a limited quantity of salts is expected, Axens can propose salt-robust regeneration design to handle them even if they are not removed.

Axens MEG recovery Conventional

Conditioning

Contaminants removal from the entering rich MEG: 
- Hydrocarbons
- Acid gases
- Corrosion products
-...

Regeneration

Water and MEG separation slightly under pressure to produce a salty lean MEG at the required concentration and water with low MEG content.

For moderate salt content and large rich MEG capacity applications a slip-stream configuration can be proposed.
This scheme allows a partial removal of salts to produce a salty lean MEG, typically at 2% wt of salts.
It is also well adapted to a staged investment approach or for retrofit of conventional regeneration (pretreatment and reclamation sections are added when salts production starts).

Axens AdvaMEG Slip-stream scheme

Conditioning

Contaminants removal from the entering rich MEG :
- Hydrocarbons
- Acid gases
- Corrosion products
-...

Chemical Pretreatment

Dedicated section designed to precipitate the divalent salts thanks to chemical injection. Then they are concentrated as a salt cake while minimizing the MEG losses.

Regeneration

Water and MEG separation slightly under pressure to produce a salty lean MEG at the required concentration and water with low MEG content.

Reclamation

MEG vaporization under vacuum to produce a concentrated slurry of salts.

Salts Removal

Monovalent salts removal using vertical basket type centrifuge to achieve high solids cake dryness with low MEG losses.

AdvaMEG®

History:
Originally developed by CCR Ltd, now exclusively licensed by Axens. AdvaMEG® is a pioneer technology with the 1st worldwide reference (1999, Gulf of Mexico, offshore).

Highlights:
AdvaMEG® benefits are supported by:

  • The experience of Axens as a process licensor as well as an engineering company delivering complete skid-mounted processing units, for both onshore and offshore applications.
  • Continuous improvement of its current know-how based on operating feedback results from its long-term R&D with IFPEN and close collaboration with key partners.
  • Selection of equipment and materials which have proven their reliability and high efficiency and are suitable for motions on floating support.

Industrially         
Proven Solution

> 99.5 %         
Highest MEG recovery

Patented         
Technology

Long-Term         
Operability & Reliability

Onshore and Offshore Project Approach:

  • Feasibility Stage
    Analysis of flow assurance study outputs, feasibility, scheme definition and conceptual study to optimize MEG regeneration and reclamation sizing.
  • Project Execution
    License supply, basic design, process engineering, detailed engineering, revamping studies, procurement, supply of complete processing units/modular turn-key units.
  • Start-up
    Assistance in pre-com/commissioning and start-up phases to secure unit performances. Experts on site to allow smooth transition from licensor to operators.
  • Operation
    After sales services and continuous end user support such as training, supply of spare parts, analysis and technical assistance.
Commercial Bulletin
Movie - Focus on integrated scheme

Modular Units

A modularization strategy offers superior benefits versus on-site manufacturing. During the last 40 years, Axens has supplied over 500 modular units, both onshore and offshore, providing tailor-made designs according to client project specifications.

Read more

Customer Training

Designed for all Axens technologies, dedicated to operators & engineers, Axens offers customized training solutions to all our licensees, covering the whole range of Axens technologies.

Read more

Technical Support & Performance Management

Axens is fully committed to be your partner and provide assistance and support during your project lifecycle, from conception to start-up & running operations.

Read more

Digital Applications

Innovative approach leveraging digital solutions leading to improved asset operation and performance.

Read more

Events

All events
Event passed
-
Singapore - UTC+8
4 days
Conference
picto Carbon Capture & Storage + 15
Low Carbon Hydrogen picto Natural Gas Syngas CO₂ Capture CO₂ Gas Drying Adsorbents Gas Sweetening MEG Recovery NGL Recovery & Treatment Syngas Production & Upgrading / Hydrogen Production Sulfur Recovery Process Technologies Drying Series Adsorbent Sulfur Removal for Oil, Gas & Petrochemicals Adsorbent Asia & Oceania

Gastech 2023

Gastech, taking place at Singapore EXPO from 5 - 8 September, will look ahead to the future amidst an industry-wide transformation to drive progress to net zero. Industry thought leaders and innovators will gauge the outlook for the entire energy value chain during an unparalleled industry experience, over a four-day period.
Learn more

Resources you might be interested in

Insight

Purifying Low-Carbon Hydrogen: Techniques for Impurity Removal Across Applications

Written by Richard Truong
Technical article

Technical Article - Guiding the crude-to-chemicals complex towards a net-zero future

Technical article

Technical Article - Isomerisation: opportunities for a more sustainable refining industry

Renewable Fuels & Bio-Based Chemicals

Case Study - Producing Renewable Liquid Products From Different Lipid Feedstocks Through a Revamp

Natural Gas

Case Study - Successful start-up of a Sub-dewpointing Sulfur Removal Technology

White Paper - Carbon Capture & Storage

Insight

A South East Asia Offshore Showcase: MEG Reclaiming on a Floating Production Unit

Written by Audrey Jouan
Insight

Modules: the Solution for a Successful Offshore Natural Gas Project

Written by Audrey Jouan
Technical article

Technical Article - Minimizing Flow-Assurance Issues With Cost-Effective MEG Regeneration And Reclamation Technology

Natural Gas

Video Axens AdvaMEG®️ Technology - A safe, cost-effective and environmentally-friendly approach for MEG recovery applications.

Contact Us

Please fill in the form below to get in touch with us