The Study On Cl~- Ion Removing From Triethylene Glycol By Resin

Using triethylene glycol to dehydrate chloromethane,in this process the hydrochloric acid in chloromethane will transfer into triethylene glycol, which causes the pH of triethylene glycol lower and the Cl^- and Fe²⁺ concentrations in triethylene glycol higher.The systems would be eroded in this case and would not be running on an even keel.This paper discusses the feasibility of removing the Cl and Fe²⁺ contained in triethylenex glycol by resin.Constituting the methods to evaluate resin exchange capability,resin regeneration capability and easily detect resin invalidation.Weak base resin is more suitable for this case compared with strong base resin,for it has better exchange,regeneration & endure capability.The resin cell will increase the flow capacity and mositure content of triethylene glycol,frequent regeneration of resin will bring a mass of alkaline waste water,consume a lot of acid & alkali and that triethylene glycol would suffer loss in each regeneration course.