Process for removing oxygen dissolved in water, in particular in water-bearing closed systems

摘要

The invention relates to a process for removing oxygen dissolved in water by means of a reducing agent, using an activator, in particular for inhibiting corrosion processes, due to oxygen, in water-bearing closed systems. In order to avoid corrosive effects resulting from oxygen dissolved in the water, the oxygen dissolved in the water should be removed. To this end, it is known to use hydrazine and sodium sulphite, and also ascorbic acid, hydroxylamine, methyl ethyl ketoxime, hydroquinones and other substances as binders for oxygen. Each of these known agents has specific advantages and disadvantages. It is the object of the invention to indicate a process which considerably accelerates the binding of oxygen in aqueous media and which has a far lower toxicity than known activators, for example heavy metal salts. The invention comprises using at least one boron-containing compound, namely preferably an oxygen-containg boron compound, for example sodium metaborate, sodium metaborate-tetrahydrate, boric acid, boric acid esters and the like, as an activator in the process mentioned.