TH11760B - Hydroxylamine purification - Google Patents

Abstract

DC60 (12/10/44) The invention provides a method for purifying hydroxylamine in order to reduce Important cations and anions The method must pass the hydroxylamine solution into an ion-exchange bed of at least one strong acid type and thereafter pass into the bed-exchange resin. At least one strong base anion, the strong acid ion exchange bed is pretreated before use. with diluted hydrochloric acid The invention provides a method for purification of hydroxylamine in order to reduce important cations and anions. The method must be passed through the hydroxylamine solution into an ion exchange bed. At least one strong acidic ion exchange bed and then passed through at least one strong base anion exchange bed resin. The strong acid ion exchange bed was pretreated with dilute hydrochloric acid.

Claims (9)

1. Method for purification of hydroxyl amine, which consists of steps: A. Passing a hydroxylamine anhydrous solution along a strong acid cation exchange resin bed. At least one bake of the macro-porous or gel type. It was treated with a solution of dilute hydrochloric acid to convert all acids to hydrogen form. And after that B. passes a solution from step A along at least one strong anion-exchange resin bed in hydroxyl form. 2. Method of claim 1 where approximately 5 to 20% hydrochloric acid solution is used in Step A in the resin process. 3. Method of claim 1 whereby sodium hydroxide solution is used. Or diluted potassium hydroxide in resin processing of B step in advance. 4. Method of claim 1 where the resin of procedure A is a strong acid polystyrene resin. 5. Method of claim 1 where the resin of the B step is mature polystyrene resinase cross-linked with diphenylbenzene. 6. Method of claim 1 whereby a hydroxylamine solution contains approximately 5 to 20% hydroxylamine by weight. 7. Method of claim 6 consists of a later step of passing approximately 50% by weight hydroxylamine solution through the resin. 8. Method of claim 1 whereby a hydroxylamine solution is passed along several layers of resin bed in step A. 9. Method of claim 1, whereby a hydroxylamine solution is passed from step A, several layers of resin bed in step B 1. 0. How to purify hydroxylamine This consists of steps a) Creating multiple strong acid ion exchange beds; b) Bed making and converting ion-base to multiple beds; c) Process of strong acid ion exchange bed with a high acid solution. Dilution of drochloric; d) Exchanging bed ion-base process. With a solution of sodium hydroxide Or potassium hydroxide; e) through an anhydrous solution containing approximately 5 to 20% hydroxylamine by weight along the ion exchange bed of the strong acid from the phase Part e) and after f) passing an anhydrous solution containing approximately 50% hydroxylamine by weight along the said strong acid ion exchange bed from step e) and after Following the ion-base exchange bed to the said from step d)