ENERGY RECOVERY DEVICE FOR WATER DESALINATION PLANTS (D-A-C)

WIPO Patent Application WO/2017/071720

A8

The DAC shown in Figures (5,6&7) consists mainly of double acting hydraulic cylinders consists of four chambers, all the pistons are of same surface area and are attached to the same shaft or axe, while it moves in two strokes "right and left" controlled by two limit switches, four check valves and directional control valve. The energy recovery device ERD (D-A-C) was designed manufactured and tested in reverse osmosis desalination plant and was compared with the performance of other energy recovery device {PX30S with booster pump). And the new ERD succeeded to omit the booster pump from the system and make the feed pump to play both roles of {feed and booster pump}. Also the new ERD leads to zero% of mix through it which improve the specific energy consumption of the desalination plant. In addition the new ERD removed the throttle valve (12) from the system in which avoiding energy pressure losses through this throttle valve (nearly 50% of feed pump energy).

WO/2014/163018	SEAWATER DESALINATION SYSTEM AND ENERGY RECOVERY APPARATUS
WO/2013/041547	ACTIVE PRESSURE INTENSIFIER, REVERSE OSMOSIS SYSTEM AND USE THEREOF
JPS5850763	[Title of the Invention] Fresh-water-generation device

SWIDAN MOHAMED ABDELWAHAB WAHBY ABDELFATTAH (EG)
SWIDAN AHMED ABDELWAHAB WAHBY ABDELFATTAH (EG)

PCT/EG2016/000034

October 12, 2017

October 25, 2016

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SWIDAN MOHAMED ABDELWAHAB WAHBY ABDELFATTAH (EG)
SWIDAN AHMED ABDELWAHAB WAHBY ABDELFATTAH (EG)

B01D61/06; F04B9/115; F04F13/00

Administrative Affairs Officer (EG)

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