| 摘要 |
In the method for nitrite-nitrate salts obtaining a condensate of secondary steam, which is formed after the stage of steaming of nitrite-nitrate alkalis in evaporating apparatuses, is purified through membranes of reverse-osmosis plant with pore size of 0.0001-0.001 mum at pressure up to 2.5 MPa, received permeate is directed to feed of boilers for vapor production by pressure of 4.0 MPa, and in concentrate flow received from reverse-osmosis plant salt content is controlled, at salt content up to 6 g/l a concentrate is recycled to an input of reverse-osmosis plant, and at salt content more than 6-20 g/l a concentrate should be returned to the stage of steaming of nitrite-nitrate alkalis. |
