The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 1986
Filed:
Oct. 20, 1983
Donald R Cutler, Bolingbrook, IL (US);
Alan R Blankshain, Murray, UT (US);
Chicago Bridge & Iron Company, Oak Brook, IL (US);
Abstract
Apparatus comprising a freeze exchanger in which an aqueous mixture is indirectly cooled by a cooling fluid to produce an aqueous mixture containing ice; a centrifuge; a conduit for feeding an ice slurry from the freeze exchanger to the centrifuge; a heater; a conduit for feeding ice from the centrifuge to the heater to melt the ice; a water treatment apparatus; a conduit for feeding the water from the heater to the water treatment apparatus to condition the water for contact with a reverse osmosis membrane; a reverse osmosis apparatus; and a conduit for feeding the conditioned water to the reverse osmosis apparatus in which the water is purified by reverse osmosis. A method comprising feeding an aqueous mixture into indirect heat exchange with a cooling fluid to produce ice particles in the aqueous mixture and thus to form an ice slurry; centrifuging the ice slurry to separate the ice and form an aqueous effluent; melting the separated ice and treating the resulting water to remove components which damage a reverse osmosis membrane; and subjecting the treated water to reverse osmosis using a reverse osmosis membrane to produce potable water and an impure water stream.