초록 ▼

A process for the continuous production of boiler feed water from process waters in the oil extraction industry during which salts and hydrocarbons are removed from the water, without Fe++precipitating. The heavy hydrocarbons are mechanically separated, the volatile hydrocarbons are separated from t

A process for the continuous production of boiler feed water from process waters in the oil extraction industry during which salts and hydrocarbons are removed from the water, without Fe++precipitating. The heavy hydrocarbons are mechanically separated, the volatile hydrocarbons are separated from the water, by means of a thermal degassing, and the low boiling and the non-condensable hydrocarbons are separated in a shower evaporation step with downstream vapor compression, wherein the low boiling non-condensable hydrocarbons are evaporated with the waste water within the shower evaporator and the non-condensable hydrocarbons then are drawn off from a downstream separator. A salt-free oxygen-free pure water is removed from a separator.

대표청구항 ▼

Process for the continuous production of pure water for boiler feed from waste waters containing salt, hydrocarbon and Fe++, comprising: mechanically purifying the waters, subjecting the mechanically purified waters to a thermal degassing in a degasser under vacuum in the absence of air, subjecting

Process for the continuous production of pure water for boiler feed from waste waters containing salt, hydrocarbon and Fe++, comprising: mechanically purifying the waters, subjecting the mechanically purified waters to a thermal degassing in a degasser under vacuum in the absence of air, subjecting the resulting thermally degassed waters to spray film evaporation in a spray film tube evaporator by spraying the waters onto the outside surfaces of a heat exchanger to produce vapor, subjecting the resulting produced vapor to a mechanical vapor compression, passing the resulting compressed vapor inside the heating surfaces of the spray film evaporator to condense the vapor inside the heating surfaces, while maintaining the temperature on the outside of the heating surfaces at a lower temperature than the temperature inside the heating surfaces, feeding the condensed water from inside the heating surfaces of the evaporator in the presence of a water vapor- and non-condensable hydrocarbons, removing the condensed water from the separator, and drawing off the non-condensable hydrocarbons from the top of the separator.