A method and device for regeneration of an adsorption air dryer having at least two desiccant-filled drying vessels connected in parallel, wherein a humid compressed-air stream generated by a compressor flows through one of the drying vessels in a drying phase and a dry compressed-air stream flows through the other drying vessel, for the purpose of dewatering the desiccant, in a simultaneous regeneration phase, wherein a valve arrangement is provided for switching the drying vessels alternately between drying phase and regeneration phase during normal operation, wherein the control mechanism are provided for implementing a post-regeneration phase, which control mechanism initiates a further flow through the drying vessel with dry compressed air for complete regeneration and also a flow through the other drying vessel; with dry compressed air for complete regeneration, so that, upon the next start of operation of the adsorption air dryer, operation commences with fully regenerated drying vessels.

Disclosed is a mutual switching type compressed air purification apparatus, comprising a main intake pipe, a main exhaust pipe, two vent valve assemblies, two drying cylinders and a solenoid valve. The main intake pipe is connected to the two vent valve assemblies of which inlet holes are communicated with the corresponding drying cylinders respectively, and air outlets of the drying cylinders are respectively connected to the main exhaust pipe. The solenoid valve is connected to a first pilot air hole of the first vent valve assembly, and also connected to a second pilot air hole of the second vent valve assembly to control the opening and closing of the vent valves, and valve cores of the solenoid valve are switched between a first valve position and a second valve position.

Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve performing a startup mode process prior to beginning a normal operation mode process to remove contaminants from a gaseous feed stream. The startup mode process may be utilized for swing adsorption processes, such as TSA and/or PSA, which are utilized to remove one or more contaminants from a gaseous feed stream.

Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve performing a startup mode process prior to beginning a normal operation mode process to remove contaminants from a gaseous feed stream. The startup mode process may be utilized for swing adsorption processes, such as TSA and/or PSA, which are utilized to remove one or more contaminants from a gaseous feed stream.

A vehicle includes a fuel tank, a primary canister, a secondary canister, a first valve, a second valve, a third valve, a heater, and a controller. The primary and secondary canisters are in fluid communication with the fuel tank and are configured to receive and store evaporated fuel from the fuel tank. The first valve is disposed between the fuel tank and the primary canister. The second valve is disposed between the secondary canister and ambient surroundings. The third valve is disposed between the primary canister and an engine. The heater is configured to heat the primary and secondary canisters. The controller is programmed to (i) activate the heater to heat the primary and secondary canisters and (ii) purge the evaporated fuel from the primary and secondary canisters after heating the primary and secondary canisters.

Some implementations can include a desiccant breather having an inner pipe having a top portion with a lip extending radially from the inner pipe, the inner pipe having a threaded portion and a top connector. The desiccant breather can also include an outer pipe having a diameter sufficient to accommodate the inner pipe, the outer pipe having a bottom connector and a cap. The desiccant breather can further include a desiccant breather body portion having a cavity configured to hold desiccant material. The lip of the inner pipe can have a diameter equal to or greater than a diameter of the outer pipe.

An air dryer having a heater element associated with its valves to prevent freezing at cold temperatures. The air dryer includes a temperature sensor and an electronic controller that reads the temperature sensor during normal operations and selectively opens and closes certain of the valves when the temperature falls below a predetermined threshold to enter a safe mode that avoids freezing of the valves during operation. If an exhaust valve is open when safe mode is entered, the corresponding inlet valve is closed, both of the exhaust valves are closed, and the other inlet valve if opened. If an exhaust valve is not open, both inlet valves are opened and both exhaust valves are closed.

Climate module (1A, 1B) of a battery housing (3) includes an adsorber unit (25) for adsorbing humidity during an adsorption mode (M1) of the climate module (1A, 1B), a heater unit (22) for regenerating the adsorber unit (25) during a regeneration mode (M2) of the climate module (1A, 1B), an outlet (6) that is fluidly connectable to an inlet (7) of the battery housing (3), an airflow generator (19), and a valve system (V1, V2) for switching the climate module (1A, 1B) from the adsorption mode (M1) into the regeneration mode (M2) and vice versa. The climate module (1A, 1B) takes in ambient air (A) during the adsorption mode (M1), and the airflow generator (19) forces the intaken ambient air (A) through the adsorber unit (25) for dehumidifying the ambient air (A) and guides the dehumidified ambient air (A) via the outlet (6) and the inlet (7) of the battery housing (3) into the battery housing (3) during the adsorption mode (M1). The climate module (1A, 1B) is an external device attachable to the battery housing (3).

A sorbent bed assembly of a fuel cell system, including a first sorbent bed, a second sorbent bed and at least one third sorbent bed, the second sorbent bed disposed between the first sorbent bed and the at least one third sorbent bed, a cover plate on the plurality of sorbent beds and configured to connect the sorbent beds to one another, a fuel inlet connector on the cover plate and configured to receive a fuel, a manifold having a first fluid conduit configured to transport fuel between the first sorbent bed and at least one third sorbent bed, and a second fluid conduit configured to transport fuel between at least one third sorbent bed and the second sorbent bed, and a fuel outlet connector on the cover plate and configured to receive fuel that has passed through each of the sorbent beds.

Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve passing streams through adsorbent bed units to remove contaminants, such as water, from the stream. As part of the process, the adsorbent bed unit may provide access to the adsorbent material within the adsorbent bed unit without having to remove one or more of valves, conduits and manifolds.