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FUNDABAC® Candle Filters for Divalent Salt Removal in MEG Reclamation

Q: How does the FUNDABAC® candle filter address divalent salt removal from rich MEG?

An oil and gas operator in India selected three FUNDABAC® candle filters for this service, configured as a Divalent Salt Removal Unit within the MEG reclamation loop. The system filters calcium and magnesium salts from concentrated rich MEG ahead of vacuum distillation, then washes the cake to recover maximum MEG and water content before dry cake discharge. The gas blow-back regeneration mechanism ensures reliable, repeatable cake release without mechanical assistance.

30.06.2026

In offshore and onshore gas production, monoethylene glycol is injected into pipelines to suppress hydrate formation. When MEG returns from the field loaded with process water and divalent salts, it must be reclaimed before re-injection. The divalent salt removal step is critical: calcium and magnesium salts concentrated in the rich MEG stream will foul downstream vacuum distillation columns if not removed to specification.

Project at a glance

Customer	Oil and gas operator, India
Application	Divalent salt removal in MEG reclamation
Scope	Three FUNDABAC® candle filters
Process challenge	Continuous automated salt removal ahead of vacuum distillation, with dry cake discharge and no manual intervention

Why is divalent salt removal challenging in MEG reclamation systems?

Conventional filtration equipment struggles with the combination of a viscous MEG matrix, fine crystalline salt solids, and the requirement for high MEG recovery from the filter cake. Incomplete washing leaves product in the cake, increasing operating costs. Poor cake discharge in continuous-duty systems creates bottlenecks and requires manual intervention, neither of which is acceptable in unmanned or remotely operated facilities.

How does the FUNDABAC® candle filter address divalent salt removal from rich MEG?

An oil and gas operator in India selected three FUNDABAC® candle filters for this service, configured as a Divalent Salt Removal Unit within the MEG reclamation loop. The system filters calcium and magnesium salts from concentrated rich MEG ahead of vacuum distillation, then washes the cake to recover maximum MEG and water content before dry cake discharge. The gas blow-back regeneration mechanism ensures reliable, repeatable cake release without mechanical assistance.

What operational requirements does the DSRU need to meet in continuous gas production?

The unit operates fully automatically under PLC control, running 24 hours a day, 365 days a year with no operator required at discharge. Cycle control, cake washing, and discharge are all handled automatically, making the system suited to continuous-duty service in production environments where manual intervention is not practical.

This project adds to DrM’s reference base in oil and gas processing, demonstrating FUNDABAC® candle filter suitability for MEG reclamation duty across continuous, unmanned production environments.

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