CONTINUOUS PROCESS AND EQUIPMENT FOR THE PRODUCTION OF OXIDIZING GAS CONTAINING 39 O₂ AND 61 N₂ BY WEIGHT, WITH N₂ HAVING A PURITY LEVEL BETWEEN 95 AND 98

摘要

The object of this patent is aimed at the production of OXIDIZING GAS CONTAINING 39% O₂ AND 61 % N₂ BY WEIGHT, WITH N₂ HAVING A PURITY LEVEL BETWEEN 95% AND 98%, whereby the water that will be deaerated is previously aerated at temperatures ranging from ambient down to 0°C, under pressures between 20,6 and 31 atm, only enough to dissolve all the volume of O₂ in the air that is compressed upon it, along with the portion of N2 of the air, whose capture cannot be dissociated from the process. Afterwards, part of the air is recovered at the top of the deaeration tank, in the form of oxidizing gas, containing 39% O₂ and 61 % N₂ by weight, with N₂, which was originally part of the compressed air and was not solubilized in the water, being collected at the top of the aeration or gasification tank showing a purity level between 95% and 98%. 2nd - unlike the State of the Art, which mandatorily requires high water temperature, up to its boiling point, the process degasification, object of the present invention, may be conducted by the preferred embodiment of its pieces of equipment simply by reducing degasification pressure in the degasification tank down to a little bit less than the atmospheric pressure to obtain the same oxidizing gas, and, following degasification, the process water keeps about 20 mg of air, per liter of water, dissolved in itself and, therefore, cannot be used as totally deaerated water. 3 - degasification may also be carried out by equipment as formed in the first construction variant of the object of this patent by reducing pressure and, at the same time, increasing the temperature, or sending it, in both embodiments, to the equipment, pre-existing in certain industries, which is used to fully deaerate water and, in these cases, produce the oxidizing gas and fully deaerated water.