An oxygen supplying apparatus includes: an oxygen enriching module including a plurality of oxygen enriching units; a pressure boosting module which receives the oxygen-enriched gas from the oxygen enriching module and boosts pressure of the oxygen-enriched gas; and a controller controlling operations of the oxygen enriching module and the pressure boosting module. The pressure boosting module includes: a low-pressure tank which receives and stores the oxygen-enriched gas from the oxygen enriching module; a pressure booster which boosts pressure of the oxygen-enriched gas discharged from the low-pressure tank; a high-pressure tank stores the oxygen-enriched gas pressure-boosted by the pressure booster; and at least one bypass valve which is provided to a bypass passage for bypassing a portion of the pressure-boosted oxygen-enriched gas stored in the high-pressure tank to the low-pressure tank to regulate bypassing of the oxygen-enriched gas from the high-pressure tank to the low-pressure tank.

An evaporative emissions isolation module system configured to manage venting on a fuel tank system is disclosed. The isolation module system includes a carbon canister, a multi-valve assembly and a controller. The carbon canister is adapted to collect fuel vapor emitted by the fuel tank and to subsequently release the fuel vapor to the engine. The multi-valve assembly includes a motor drive that rotates a camshaft having at least a first cam and a second cam housed in a manifold. The multi-valve assembly has a first valve and a second valve. The first valve selectively fluidly connects the fuel tank and the carbon canister. The second valve fluidly connects the carbon canister with a vent port defined in the manifold that vents to atmosphere. The controller sends signals to the multi-valve assembly based on operating conditions to open and close at least one of the first and second valves.

A valve arrangement in particular four-way switch, for an adsorber station of an air separation plant, having a first valve device comprising a first gas inlet/gas outlet, a second valve device, comprising a second gas inlet/gas outlet, and a first connecting piece, which fluidically connects a first housing section of the first device to a second housing section of the second valve device, the first connecting piece has a third gas inlet/gas outlet. A second connecting piece, fluidically connects the first housing section to the second housing section, wherein the second connecting piece has a fourth gas inlet/gas outlet. The valve arrangement is selectively switchable into a first switching state, in which the first gas inlet/gas outlet is fluidically connected to the fourth gas inlet/gas outlet and the second gas inlet/gas outlet is simultaneously fluidically connected to the third gas inlet/gas outlet, or into a second switching state, in which the first gas inlet/gas outlet is fluidically connected to the third gas inlet/gas outlet and the second gas inlet/gas outlet is simultaneously fluidically connected to the fourth gas inlet/gas outlet.

Presented invention relates to a compact oxygen generator having a reduced size and reduced noise. The oxygen generator includes an upper heat sink, a lower heat sink, an air filter for filtering air introduced inside the oxygen generator, a solenoid valve for receiving the filtered air from the air filter, a zeolite module bed for separating nitrogen and oxygen from the filtered air received from the solenoid valve, and a vacuum pump supplied with the oxygen from the zeolite module bed through one discharge pipe, and supplied with the nitrogen through another discharge pipe via a vacuum chamber. The vacuum chamber ensures a specific amount of the nitrogen is supplied in a regular manner to the vacuum pump to block noise which would otherwise be generated due to the pressure change in the vacuum pump. The oxygen generator includes an internal sound insulating box for mounting the vacuum pump therein.

The invention relates to a method for managing a PSA unit having at least N adsorbers arranged in pairs, where each pair is designed to be able to be selectively isolated, a control device, and a plurality of interfaces for accessing the instrumentation of each adsorber. When a first pair is fluidically isolated, the first pair having a first and a second adsorber, the isolating of a third adsorber includes setting the control device to control N-4 adsorbers, fluidically isolating a second pair having the third and a fourth adsorber, isolating one of the first and second adsorbers and the third adsorber, configuring the interfaces so as to swap over the instrumentation of the other of the first and second adsorbers and the instrumentation of the fourth adsorber, placing the first and second pairs in fluidic communication, and setting the control device to control N-2 adsorbers.

A system and method for separating and/or purification of CO.sub.2 gas from a CO.sub.2 feed stream is described. The system and method include a plurality of fixed sorbent beds, adsorption zones and desorption zones, where the sorbent beds are connected via valve and lines to create a simulated moving bed system, where the sorbent beds move from one adsorption position to another adsorption position, and then into one regeneration position to another regeneration position, and optionally back to an adsorption position. The system and method operate by concentration swing adsorption/desorption and by adsorptive/desorptive displacement.

A compact desiccant air breather with unidirectional air flow comprises a housing with a plurality of air inlets adjacent an upper end for air intake. A desiccant bed of water absorbing material is within the intake flow path of air and an air chamber is within the intake flow path of air downstream of the desiccant bed. A one-way inflow check valve is adjacent the desiccant bed between the desiccant bed and the air chamber and is configured to allow airflow from the desiccant bed material to the air chamber and to prevent reverse airflow. A coupling member has an air flow conduit there-through which is in fluid communication with the air chamber and forms an air intake flow path exit. A one-way exhaust check valve in fluid communication with the air chamber is configured to allow airflow from the air chamber to the exterior and to prevent reverse flow.

A method and system for manufacturing and using a self-supporting structure in processing unit for adsorption or catalytic processes. The self-supporting structure has greater than 50% by weight of the active material in the self-supporting structure to provide an open-celled structure providing access to the active material. The self-supporting structures, which may be disposed in a processing unit, may be used in swing adsorption processes and other processes to enhance the recovery of hydrocarbons.

An adsorption system for the production of demineralized water aboard a motor vehicle comprising: a condenser, an evaporator, a first and a second adsorbent bed, each containing adsorbent material. Each adsorbent bed is selectively connectable to the condenser and/or the evaporator by pipes provided with at least one control valve. Each adsorbent bed is selectively and alternately connectable to a supply circuit of a heating source and to a supply circuit of a cooling source via supply valves. The condenser is directly and selectively connectable to the evaporator by a direct branch provided with a relative throttle valve, An inlet valve is arranged along an air inlet branch, and selectively establishes a fluid connection between the air of the environment outside the system and the adsorbent beds, so as to capture water from the external air through an adsorption phenomenon performed by the adsorbent beds and to produce water.

An evaporative emissions isolation module system configured to manage venting on a fuel tank system is disclosed. The isolation module system includes a carbon canister, a multi-valve assembly and a controller. The carbon canister is adapted to collect fuel vapor emitted by the fuel tank and to subsequently release the fuel vapor to the engine. The multi-valve assembly includes a motor drive that rotates a camshaft having at least a first cam and a second cam housed in a manifold. The multi-valve assembly has a first valve and a second valve. The first valve selectively fluidly connects the fuel tank and the carbon canister. The second valve fluidly connects the carbon canister with a vent port defined in the manifold that vents to atmosphere. The controller sends signals to the multi-valve assembly based on operating conditions to open and close at least one of the first and second valves.