A pressure exchanger includes a rotor configured to exchange pressure between a first fluid at a first pressure and a second fluid at a second pressure. The rotor forms ducts that are routed from a first distal end to a second distal end. The pressure exchanger further includes a first end cover that forms a high pressure in (HPIN) port configured to provide the first fluid at the first pressure into the ducts. The first end cover forms a low pressure out (LPOUT) port configured to receive the first fluid from the ducts at a third pressure. One or more sidewalls of the first end cover that form the HPIN port or the LPOUT port are substantially planar. The pressure exchanger further includes a second end cover that forms a low pressure in (LPIN) port configured to provide the second fluid at the second pressure into the ducts and forms a high pressure out (HPOUT) port configured to receive the second fluid from the ducts at a fourth pressure.

A pressure exchanger includes a rotor configured to exchange pressure between a first fluid at a first pressure and a second fluid at a second pressure. The rotor forms ducts that are routed from a first distal end to a second distal end. The pressure exchanger further includes a first end cover that forms a high pressure in (HPIN) port configured to provide the first fluid at the first pressure into the ducts. The first end cover forms a low pressure out (LPOUT) port configured to receive the first fluid from the ducts at a third pressure. One or more sidewalls of the first end cover that form the HPIN port or the LPOUT port are substantially planar. The pressure exchanger further includes a second end cover that forms a low pressure in (LPIN) port configured to provide the second fluid at the second pressure into the ducts and forms a high pressure out (HPOUT) port configured to receive the second fluid from the ducts at a fourth pressure.

A system includes a rotary liquid piston compressor configured to exchange pressure between a liquid and a supercritical fluid. The rotary liquid piston compressor includes a rotor configured to exchange pressure between the liquid and the supercritical fluid as the rotor rotates. The rotor defines channels that extend through the rotor. The rotary liquid piston compressor further includes barriers configured to block mixing between the liquid and the supercritical fluid. The barriers rest within the rotor. Each channel of the channels is configured to receive a barrier of the barriers.

A system includes a rotary liquid piston compressor configured to exchange pressure between a liquid and a supercritical fluid. The rotary liquid piston compressor includes a rotor configured to exchange pressure between the liquid and the supercritical fluid as the rotor rotates. The rotor defines channels that extend through the rotor. The rotary liquid piston compressor further includes barriers configured to block mixing between the liquid and the supercritical fluid. The barriers rest within the rotor. Each channel of the channels is configured to receive a barrier of the barriers.

At least one pressure exchange unit with a hollow cylindrical body, a piston sliding in the body, the piston including a piston head separating the interior of the cylindrical body into a downstream chamber and an upstream chamber, the downstream chamber being provided with a device for the admission and discharge of water to be treated, the upstream chamber being provided with a five-way distributor linkage including, for hydraulic balancing, two pressurized liquid supply orifices, two orifices for the evacuation of the liquid and an opening in communication with the upstream chamber.

At least one pressure exchange unit with a hollow cylindrical body, a piston sliding in the body, the piston including a piston head separating the interior of the cylindrical body into a downstream chamber and an upstream chamber, the downstream chamber being provided with a device for the admission and discharge of water to be treated, the upstream chamber being provided with a five-way distributor linkage including, for hydraulic balancing, two pressurized liquid supply orifices, two orifices for the evacuation of the liquid and an opening in communication with the upstream chamber.

A pressure exchanger includes a rotor, a seal plate, and a seal structure. The rotor is configured to exchange pressure between a first fluid and a second fluid. The seal plate has a first substantially planar seal plate surface and a second substantially planar seal plate surface disposed opposite the first substantially planar seal plate surface. A piston structure extends from the first substantially planar seal plate surface to form a substantially planar piston surface that has a surface area and is substantially parallel to the first substantially planar seal plate surface. The seal plate and the piston structure form a hydraulic chamber routed from a first opening formed by the substantially planar piston surface to a second opening formed by the second substantially planar seal plate surface. The seal structure is configured to couple the second substantially planar seal plate surface to a corresponding surface of the pressure exchanger.

A pressure exchanger includes a rotor, a seal plate, and a seal structure. The rotor is configured to exchange pressure between a first fluid and a second fluid. The seal plate has a first substantially planar seal plate surface and a second substantially planar seal plate surface disposed opposite the first substantially planar seal plate surface. A piston structure extends from the first substantially planar seal plate surface to form a substantially planar piston surface that has a surface area and is substantially parallel to the first substantially planar seal plate surface. The seal plate and the piston structure form a hydraulic chamber routed from a first opening formed by the substantially planar piston surface to a second opening formed by the second substantially planar seal plate surface. The seal structure is configured to couple the second substantially planar seal plate surface to a corresponding surface of the pressure exchanger.

A pressure exchanger includes a rotor configured to exchange pressure between a first fluid at a first pressure and a second fluid at a second pressure. The rotor forms ducts that are routed from a first distal end to a second distal end. The pressure exchanger further includes a first end cover that forms a high pressure in (HPIN) port configured to provide the first fluid at the first pressure in a substantially axial direction into the ducts. The first end cover forms a low pressure out (LPOUT) port configured to receive the first fluid from the ducts at a third pressure. The pressure exchanger further includes a second end cover that forms a low pressure in (LPIN) port configured to provide the second fluid at the second pressure into the ducts and forms a high pressure out (HPOUT) port configured to receive the second fluid from the ducts at a fourth pressure.

A pressure exchanger includes a rotor configured to exchange pressure between a first fluid at a first pressure and a second fluid at a second pressure. The rotor forms ducts that are routed from a first distal end to a second distal end. The pressure exchanger further includes a first end cover that forms a high pressure in (HPIN) port configured to provide the first fluid at the first pressure in a substantially axial direction into the ducts. The first end cover forms a low pressure out (LPOUT) port configured to receive the first fluid from the ducts at a third pressure. The pressure exchanger further includes a second end cover that forms a low pressure in (LPIN) port configured to provide the second fluid at the second pressure into the ducts and forms a high pressure out (HPOUT) port configured to receive the second fluid from the ducts at a fourth pressure.