Verfahren zur Regenerierung einer Salze enthaltenden wässrigen Lösung von Glykol

摘要

The process of regeneration of a used glycol solution comprises stages of elimination of hydrocarbons, water and salts by distillation and separation of precipitated salt. The re-generation process comprises stages of (a) expansion of the solution to liberate hydrocarbons to produce a solution depleted in hydrocarbons; (b) distillation of the depleted solution to obtain a glycol-enriched solution and vapor containing water and hydrocarbons; (c) the solution obtained at (b) is subjected to a vacuum at a pressure less than 90000 Pa absolute to vaporize the water and obtain a glycol solution with precipitated salts; (d) separation of the salts to obtain a salt-free glycol solution.