Method for producing an aqueous hydroxylamine solution devoid of salt
AssigneeBASF SE
InventorsKarl-Heinz Wostbrock, Joachim Thiel, Heinz Krüger, Eckhard Ströfer, Markus Weber, Bernd Gerber, Bernd Rumpf, Bernd Sachweh, Steffen Kerth
Life of this patent
Estimating the term…
Abstract
The invention relates to a method for producing a highly pure, aqueous hydroxylamine solution by distilling an aqueous solution, devoid of salt, of a hydroxyl ammonium salt in a plate column comprising at least two mechanical plates. Said method is characterised in that packing bodies are arranged between at least two plates of the plate column over the cross-section of said column.
Claims11
A process for the preparation of a highly pure, aqueous hydroxylamine solution by distillation of a salt-free, aqueous hydroxylamine solution in a plate-type column having at least two mechanical plates, wherein, above at least one plate of the plate-type column, packing materials are situated over the cross section of the column, and wherein the packings are arranged at a distance of from 100 to 600 mm above the tray.
Dependencies are inferred from the claim text.