COMPLEX WASTELESS TREATMENT OF TOXIC WASTES Russian patent published in 2013 - IPC A62D3/00 C08J11/00 B09B3/00 B09B5/00 B01D53/34 F23J99/00 

FIELD: process engineering.

SUBSTANCE: invention relates to complex wasteless treatment of toxic wastes. Hydrochloric acid formed in pyrolysis is fed into intake tanks and processed by (2HCl₂+2FeCl₂+3MgO+O) to obtain bischofite (MgCl₂*6H₂O) and iron oxide pigments (Fe₂O₃). Fire gas formed in pyrolysis is fed, after dry and wet treatment, to thermal electric station for combustion to form off-gases. Said gases are directed for complex treatment. Slags, salts and silicon-bearing dust trapped in complex treatment system are combusted at 1100-1250°C to form hydrochloric acid. Said components are fed into intake tanks for production of construction materials and treated by (2FeSO₄+H₂SO₄+3MgO) to obrain magnesium sulfate (MgSO₄*7H₂O) and iron oxide pigments (Fe₂O₃). Aforesaid ground and separated slag and silicon-bearing dust are processed by (SiO₂+2NaOH) to obtain liquid glass (Na₂SiO₃) to be fed to dispensers to make binders for production of solid-propellant pellets.

EFFECT: ruled out harmful emissions.

1 cl, 3 dwg