Divalent cation removal from rich monoethylene glycol (meg) feed streams by ion exchange

A system, comprising:

• an ion exchange unit with at least one ion exchange bed containing a cation exchange resin that absorbs divalent cations;
• a source of rich MEG coupled to the ion exchange unit;
• a flash separator coupled to the ion exchange unit;
• and
• a source of regeneration brine coupled to the flash separator to receive salt from the flash separator and to the ion exchange unit to provide regeneration brine to the ion exchange unit.

A system, comprising:

• an ion exchange unit with at least two ion exchange beds, each containing a cation exchange resin that absorbs divalent cations;
• a source of rich MEG coupled to the ion exchange unit;
• a distillation column to the ion exchange unit;
• a source of regeneration brine coupled to to the ion exchange unit to provide regeneration brine to the ion exchange unit;
• and
• a distillation column arranged to receive a stream depleted of divalent ions by the ion exchange unit, with an overhead of the distillation column coupled to the source of regeneration brine;
• and
• a salt source coupled to the source of regeneration brine.