US 12,221,360 B2
Low energy ejector desalination system
Jorge T. Aguinaldo, Tampa, FL (US); Joseph P. Kanzleiter, Houston, TX (US); David Ladd, Sugar Land, TX (US); Saurabh S. Tonapi, Katy, TX (US); Baki E. Goktepe, Houston, TX (US); and Mukesh K. Shah, Houston, TX (US)
Assigned to Bechtel Energy Technologies & Solutions, Inc., Houston, TX (US)
Appl. No. 18/694,795
Filed by Bechtel Energy Technologies & Solutions, Inc., Houston, TX (US)
PCT Filed Sep. 23, 2022, PCT No. PCT/US2022/044590
§ 371(c)(1), (2) Date Mar. 22, 2024,
PCT Pub. No. WO2023/049386, PCT Pub. Date Mar. 30, 2023.
Claims priority of provisional application 63/248,175, filed on Sep. 24, 2021.
Prior Publication US 2024/0270607 A1, Aug. 15, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C02F 1/04 (2023.01); B01D 1/28 (2006.01); B01D 3/00 (2006.01); B01D 5/00 (2006.01); C02F 103/08 (2006.01); C02F 103/10 (2006.01)
CPC C02F 1/041 (2013.01) [B01D 1/2853 (2013.01); B01D 3/007 (2013.01); B01D 5/0039 (2013.01); C02F 2103/08 (2013.01); C02F 2103/10 (2013.01); C02F 2301/046 (2013.01); C02F 2303/10 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system for treating a raw wastewater feed stream, comprising:
a heat exchanger to heat a wastewater stream and create a two-phase stream;
a column in fluid communication with the heat exchanger for separating the two-phase stream into a vapor distillate stream and a concentrated liquid wastewater stream;
an ejector in fluid communication with the column for combining the vapor distillate stream from the column and a liquid distillate stream to produce an ejector two-phase stream;
a separator in fluid communication with the ejector that separates the ejector two-phase stream into another vapor distillate stream and the liquid distillate stream, wherein the vapor distillate stream and the another vapor distillate stream are in fluid communication;
a pump in fluid communication with the ejector to send the liquid distillate stream as a motive fluid to the ejector; and
another pump in fluid communication with and positioned downstream from the column for pumping at least a portion of the concentrated liquid wastewater stream to the heat exchanger.