Eli O Oklejas

US Patent:

20070181473, Aug 9, 2007

Filed:

May 23, 2003

Appl. No.:

10/587009

Inventors:

Thomas Manth - Aachen, DE
Eli Oklejas - Monroe MI, US
Michael Gabor - Kaarst, DE

International Classification:

B01D 63/00

US Classification:

210137000, 210321650, 210637000, 210652000

Abstract:

The invention relates to a water desalination installation for the desalination of seawater according to the reverse osmosis method. This installation comprises at least one membrane module that is connected with a raw water feed line, via which raw water is supplied by means of a high-pressure pump; with a permeate line, via which the desalinated water is discharged; and with a concentrate line, via which concentrated salt water is discharged. For permitting the pressure to be adapted in the raw water feed line to the salt content and the temperature of the water to be desalinated, and for increasing at the same time the energy efficiency of such a water desalination installation, the invention proposes that provision is made for an energy recovery unit that comprises a motor-driven pressure booster pump arranged in the raw water feed line either before the high-pressure pump or between the high-pressure pump and them membrane module; and a turbine that is arranged in the concentrate line and mechanically coupled with the pressure booster pump.

US Patent:

20070289904, Dec 20, 2007

Filed:

Jun 11, 2007

Appl. No.:

11/811622

Inventors:

Eli Oklejas - Monroe MI, US

International Classification:

B01D 35/14

US Classification:

210 87, 210137, 21032165, 21032166

Abstract:

A reverse osmosis system includes a membrane chamber having a feed line. The chamber generates a permeate stream and a brine stream from the feed line . A feed pump pressurizes the feed line . A first flow meter generates a first flow signal corresponding to a flow of fluid in the permeate stream . A booster device has a turbine in fluid communication with the brine stream and a pump in fluid communication with the feed line . A motor is coupled to the turbine device and a variable frequency drive is attached to the turbine device operating in response to the first flow signal. A second flow meter generates a second flow signal corresponding to a flow of fluid in the brine stream and a variable size nozzle operates an opening in response to the second flow meter.

US Patent:

20070292283, Dec 20, 2007

Filed:

Jun 11, 2007

Appl. No.:

11/811621

Inventors:

Eli Oklejas - Monroe MI, US

International Classification:

F04B 49/00

US Classification:

417309

Abstract:

A centrifugal pump includes a casing having an impeller chamber, an inlet, an outlet, and a bearing chamber. A shaft disposed within the casing has an impeller end and a motor end. The impeller is coupled to the impeller end of the shaft and is disposed within the impeller chamber. A bearing is disposed within the bearing portion. The bearing has an inboard end with an inboard-bearing surface and an outboard end with an outboard-bearing surface. The bearing and the shaft have a bearing clearance therebetween. A disc is coupled to the shaft on the impeller end which is spaced apart from the inboard-bearing surface. A seal ring is disposed between the disc and the inboard-bearing surface. The shaft, the seal ring, the disc, and the inboard-bearing surface define a thrust chamber therebetween. The thrust chamber is in fluid communication with the impeller chamber through the bearing clearance so that an axial thrust in an inboard direction is generated by the thrust chamber.

US Patent:

20080105617, May 8, 2008

Filed:

Jun 11, 2007

Appl. No.:

11/811607

Inventors:

Eli Oklejas - Monroe MI, US

International Classification:

B01D 61/02
B01D 61/08
B01D 61/12

US Classification:

210637, 210137, 210 87

Abstract:

A reverse osmosis system includes a first membrane chamber having a first feed line and generating a first permeate stream and a first brine stream. The reverse osmosis also includes a feed pump pressurizing the first feed line and a first booster device include communication with the first feed line. A flow balance line is also included in the reverse osmosis system, a second booster device, in fluid communication with the first permeate stream and the flow balance line. The reverse osmosis system also includes a second membrane chamber having a second feed line and fluid communication with the second booster device. The second membrane includes a second permeate stream in fluid communication with the flow balance line.

US Patent:

20080190848, Aug 14, 2008

Filed:

Jan 31, 2008

Appl. No.:

12/023194

Inventors:

Eli Oklejas - Monroe MI, US

International Classification:

B01D 61/02
B01D 61/08

US Classification:

210652, 210205

Abstract:

A reverse osmosis system includes a plurality of feed pumps each having a feed pump input and a feed pump output, an input manifold in fluid communication with the feed pump inputs and a membrane feed manifold in fluid communication with the feed pump output. The system also includes a plurality of membrane chambers each in fluid communication with the membrane feed manifold and generating a permeate output and a brine output, each brine output in fluid communication with a brine manifold. The system further includes a plurality of booster devices each having a turbine portion with a turbine input in fluid communication with the brine manifold and a pump portion having a booster device pump input and a booster device pump output, each booster device pump output in fluid communication with the membrane feed manifold. The system includes a pump input manifold in fluid communication with the booster device pump input. The system also includes a medium pressure pump in fluid communication with the input manifold and the pump input manifold.

US Patent:

51062623, Apr 21, 1992

Filed:

May 12, 1989

Appl. No.:

7/351859

Inventors:

Robert A. Oklejas - Monroe MI
Eli Oklejas - Monroe MI

International Classification:

F01D 500

US Classification:

4151711

Abstract:

An idler disk for reducing fluid drag forces in a machine having a rotating component is disclosed. An outer housing is provided for the machine and a cavity is defined in the outer housing. The cavity has opposed side walls. A rotatable component is positioned in the cavity and the rotatable component is spaced apart from the side walls of the cavity. At least one freely rotatable idler disk is positioned in the cavity and the idler disk is in spaced apart relationship with the rotatable component and the side walls of the cavity. The idler disk extends in the cavity along at least a portion of the length of the rotatable component. The idler disk is caused to rotate in the same direction as the rotatable component by the rotating fluid in the cavity. The fluid is caused to rotate by the rotation of the rotatable component. The rotating idler disk increases the speed of the fluid rotating adjacent the rotatable component and thereby reduces the fluid drag on the rotatable component.

US Patent:

50490451, Sep 17, 1991

Filed:

Dec 4, 1990

Appl. No.:

7/622358

Inventors:

Robert A. Oklejas - Monroe MI
Eli Oklejas - Monroe MI

International Classification:

F04B 1700
F04B 3500

US Classification:

417365

Abstract:

The invention is directed to an energy recovery pump turbine for use in industrial processes where a fluid is pumped at a high pressure to the process and at least a portion of the fluid is discharged from the process at a high pressure. A turbine is positioned to receive the high pressure discharge from the process. The turbine has an impeller positioned on a shaft and the discharged fluid engages the impeller and causes the impeller and shaft to rotate. A pump is position adjacent to the turbine to receive the fluid being pumped to the process. The pump has an impeller mounted on a shaft and the shaft of the pump is operatively connected to the shaft of the turbine. Rotation of the turbine shaft causes the impeller and the shaft of the pump to rotate whereby the pump assists in supplying the fluid under pressure to the process and to recover energy from the high pressure fluid discharged from the process. Also disclosed is a method for recovering energy from an industrial process where a fluid is pumped at a high pressure into the process and at least a portion of the fluid is discharged from the process at a high pressure. The high pressure discharged fluid is directed into the inlet of a turbine.

US Patent:

49667084, Oct 30, 1990

Filed:

Nov 30, 1989

Appl. No.:

7/443736

Inventors:

Robert A. Oklejas - Monroe MI
Eli Oklejas - Monroe MI

International Classification:

B01D 6112

US Classification:

210637

Abstract:

The invention is directed to an energy recovery pump turbine for use in industrial processes where a fluid is pumped at a high pressure to the process and at least a portion of the fluid is discharged from the process at a high pressure. A turbine is positioned to receive the high pressure discharge from the process. The turbine has an impeller positioned on a shaft and the discharged fluid engages the impeller and causes the impeller and shaft to rotate. A pump is position adjacent to the turbine to receive the fluid being pumped to the process. The pump has an impeller mounted on a shaft and the shaft of the pump is operatively connected to the shaft of the turbine. Rotation of the turbine shaft causes the impeller and the shaft of the pump to rotate whereby the pump assists in supplying the fluid under pressure to the process and to recover energy from the high pressure fluid discharged from the process. Also disclosed is a method for recovering energy from an industrial process where a fluid is pumped at a high pressure into the process and at least a portion of the fluid is discharged from the process at a high pressure. The high pressure discharged fluid is directed into the inlet of a turbine.