Abstract:

For the CDQ demineralized water system for No.3 and No.4 coke ovens of Jiu-steel, reverse osmosis system and mixing bed system are taken as the key equipment,  the fully automatic filter and ultrafiltration system are used as pre-treatment unit; the water making mode of macromolecule separation film and mixing bed is adopted and the produced demineralized water is high in quality; the pressure before the film is kept at low level ranging from 0.02~0.06MPa and ultrafiltration incoming water flow rate can be stabilized at about 70t/h. The problems occurring in the actual application of the demineralized water system and various kinds of improving measures taken are described.