Carboxylic acid salt removal during hydrate inhibitor recovery

Method for precipitation and separation of carboxylic acid salts from a hydrate inhibitor fluid stream comprising lowering the solubility of the carboxylic acid salts to force precipitation of carboxylic acid salts and separation of the precipitated carboxylic acid salts by separation of the solid precipitated salts from the hydrate inhibitor solution, wherein the hydrate inhibitor comprises at least one glycol based inhibitor, and wherein the lowering of the solubility is performed by adding an antisolvent to the hydrate inhibitor fluid stream.

Hydrate inhibitor reclamation system comprising a reclaimer for evaporation of hydrate inhibitor and up-concentration and precipitation of inorganic salts comprising a rich hydrate inhibitor fluid stream inlet, a vapour outlet in fluid communication with a condenser for condensation and recovery of the hydrate inhibitor, the reclaimer further comprises a bottom fluid outlet and a return liquid inlet wherein the bottom fluid outlet is in fluid communication with a solid separation unit comprising a return liquid outlet and a solid outlet, wherein the return liquid outlet is in fluid communication with the return liquid inlet of the reclaimer via a liquid return line, wherein the bottom fluid outlet is in fluid communication with a precipitation tank upstream the solid separation unit and the precipitation tank comprises an antisolvent inlet, wherein an antisolvent separation unit comprising an antisolvent outlet is arranged on the liquid return line downstream the solid separation unit and the antisolvent outlet is in fluid communication with the antisolvent inlet.