Method for purifying water and water treatment system therefor
AssigneePratt & Whitney Rocketdyne, Inc.
InventorJeffrey A. Mays
Life of this patent
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Abstract
A method for purifying water involves heating impure water in a first reboiler, a second reboiler and a combustion steam generator to ultimately produce about 3 parts by weight of clean water and about 1 part by weight of clean steam for every 4 parts by weight of the impure water. A water treatment system includes a gas-fired combustion steam generator that is operable to produce a hot steam stream. A reboiler is connected in receiving communication with the gas-fired combustion steam generator to receive the hot steam stream. A separator is connected with the reboiler and is operable to separate an output stream from the reboiler.
Claims21
A method of purifying water, the method comprising:
- (a) heating impure water in a first reboiler to produce clean water and a first concentrated impure water stream;
- (b) providing the first concentrated impure water stream into a second, different reboiler to produce additional clean water and a second concentrated impure water stream;
- (c) providing the second concentrated impure water stream into a gas-fired combustion steam generator to produce a steam stream including particulate matter precipitated from the second concentrated impure water stream;
- (d) separating the particulate matter from the steam stream to produce clean steam;
- and
- (e) providing the clean stream into the first reboiler and the second reboiler to transfer heat to, respectively, the impure water and the first concentrated impure water stream, said steps (a)-(e) producing about 3 parts by weight of the clean water and about 1 part by weight of the clean steam for every 4 parts by weight of the impure water.
A water treatment system comprising:
- a gas-fired combustion steam generator operable to produce a hot steam stream;
- a reboiler including an inlet connected in receiving communication with the gas-fired combustion steam generator to receive the hot steam stream;
- and
- a separator connected with an outlet of the reboiler and operable to separate an output stream from the reboiler into a steam stream and a liquid water stream.
A water treatment system comprising:
- a gas-fired combustion steam generator operable to produce a hot steam stream;
- a plurality of reboilers serially connected in receiving communication with the gas-fired combustion steam generator to receive the hot steam stream;
- and
- a plurality of separators connected in receiving communication with the plurality of reboilers and operable to separate product streams from the plurality of reboilers into steam streams and liquid water streams.
Dependencies are inferred from the claim text.