초록 ▼

A liquid distillation apparatus provides recirculating flow of unevaporated liquid and recovery of energy from the liquid circulation. Liquid columns in communication with each other are provided differing liquid levels to enhance circulation of the liquid, and to provide efficient operation of the

A liquid distillation apparatus provides recirculating flow of unevaporated liquid and recovery of energy from the liquid circulation. Liquid columns in communication with each other are provided differing liquid levels to enhance circulation of the liquid, and to provide efficient operation of the apparatus. Aeration is used to raise the level of the liquid in one of the liquid columns as well as to improve vapor generation for use in a condenser. The two liquid columns are separated from one another except for a connection at the tops and bottoms thereof to permit recirculation of the liquid. The aeration system may be operated by energy recovered from the circulating liquid.

대표청구항 ▼

Apparatus for distilling a liquid supplied thereto comprising: (a) fifst column forming means for forming a first column of the liquid having a first liquid level and receiving the supplied liquid therein, (b) a second column forming means for forming a second column of the liquid having a second li

Apparatus for distilling a liquid supplied thereto comprising: (a) fifst column forming means for forming a first column of the liquid having a first liquid level and receiving the supplied liquid therein, (b) a second column forming means for forming a second column of the liquid having a second liquid level, (c) level changing means for providing a differential between the liquid levels of said first and second columns and further for causing said second liquid level to be higher than said first liquid level, said level changing means comprising aerating means for supplying a gas to one of said first and second columns for aerating the liquid therein, (d) first connecting means for connecting bottom portions of said first and second columns, (e) condensing means for condensing liquid vapor generated in said second column and for providing a distillate thereof, (f) second connecting means for connecting top portions of said first and second columns and for returning unevaporated liquid from said second column to said first column, (g) said second column forming means including an aeration tank for aerating the liquid therein, (h) said aerating means of said level changing means comprising supply means for supplying the gas to said second column and for aerating the liquid therein, (i) pressurizing means for pressurizing the gas supplied by said supply means, (j) said pressurizing means comprising gas pumping means comprising compressor means and blower means for rapidly pressurizing gas in a storage tank and for maintaining pressure within said storage tank, respectively, and (k) each of said compressor means and said blower means comprising driving motor means and heat exchange means for heating the gas by waste heat of said driving motor means. A method for distilling a liquid comprising the steps of: (a) supplying the liquid to a first conduit having a vertica. displacement between its two ends; (b) providing the liquid from the lower one of the two ends of said conduit to a lower one of two ends in a second conduit having a vertical displacement between its two ends; (c) causing the liquid in said second conduit to rise to a level higher than the liquid in said first conduit by aerating the liquid in said second conduit with a pressurized gas; heating the gas with waste heat of a motor used for pressurizing the gas; (d) evaporating and condensing a portion of the liquid in said second conduit to obtain a distillate thereof, and (e) returning unevaporated liquid from the high level of said second conduit to said first conduit.