TH29927B - Preparation of free hydroxylamine activates solution - Google Patents

Abstract

DC60 (06/11/49) Free acquis hydroxylamine solution is prepared by salt processing. Hydroxyl ammonium with ammonia by the countercurrent method in the elimination column by means of which Hydroxylamine is freed. and at the same time the resulting solution is separated. By distillation into a solution of acquis hydroxylamine with a fraction of the salt. The new method can was made possible in a simple and non-violent way. and on a large scale the danger of Degradation is minimized due to low thermal load. The concentration of hydroxylamine at low and the duration within the process is short; A free aqueous solution of hydroxylamine is prepared by processing the hydroxylamine salt with ammonium. by the countercurrent method in the elimination column by means of which hydroxylamine is freed. At the same time, the resulting solution is separated by distillation into a hydroxylamine solution containing water as a solvent with a fraction of the salt. New methods can be implemented in a very simple and non-violent way. and on a large scale The decomposition hazard is minimized due to the low thermal load. The low hydroxylamine concentration and the short intravenous time were

Claims (1)

1. Process of preparation of aqueous free hydroxylamine solution by performing alkali hydroxylamine salt solution and separation of the obtained solution by distillation. Water-based hydroxyl amines With a portion of salt Where the solution is processed with alkaline ammonia By the countercurrent method, at the same time the separation is carried out by a water or steam operation. 2. The process holds the right to claim 1, where the countercurrent operation and the separation by distillation. It is made possible with the help of the elimination column 3. The process holds the right to claim 2, where the resulting solution is executed in the counter-flow step. By passing water or steam and ammonia or ammonia water into the bottom of the column 4. The process holds the rights to claim 2 or 3, where a water-based hydroxylamine solution. The solvent will be brought out at the top of the Elimination Column 5. Method As for any of Claims 2 through 4, where the Elimination column is performed from 5 to 300, Popular are from 10 to 110 kPa 6. The process, as in any of the preceding clauses, where a water-based hydroxylamine solution is 7. The process, as in claim 6, where the distillation column is performed from 1 to 200, popular is from 10 to 100 kPa. Holds claim 6 or 7, where the water that is brought out to the top of the distillation column is recycled. If desired, in gaseous form at the bottom of the elimination column 9. The process holds the right to claim 6, where the removal of free hydroxyl amine from the salt solution. And a more concentrated hydroxylamine solution is produced in the distillation / elimination column of 1 0. The process holds the right to claim 9, where the separation of the hydroxyl A concentrated amine is produced from 1 to 3 trays above the feed solution, salt and water are taken out of the top and a portion of the salt is taken out of the bottom of column 1. 1. The process holds the right in any of the preceding claims. Where a decomposition stabilizer is added to all solutions containing hydroxylamine.