Abstract: A heat pump dryer includes a main casing, a compressor, a first heat exchanger having a first portion and a second portion, and a second heat exchanger. The main casing has an air inlet, a first outlet conduit, a second outlet conduit, a first air outlet, and a second air outlet. Air is arranged to enter the main casing through the air inlet, and is arranged to be bifurcated to pass through the first outlet conduit and the second outlet conduit. The air in the first outlet conduit is arranged to sequentially flow through the second heat exchanger and the first portion of the first heat exchanger, whereas the air in the second outlet conduit is arranged to flow through the second portion of the second heat exchanger.

Abstract: A desiccant member is disclosed that comprises a polymer material and a bentonite material. The desiccant member is capable of absorbing moisture from an atmosphere containing siloxanes, organic compounds having a boiling point greater than 60 C, or mixtures thereof. The desiccant member is contamination resistant and may be regenerable. The desiccant member may have a high working moisture capacity that is suited for demanding environments.

Abstract: An air purification device includes an adsorption block, a housing, an introduction port for indoor air, an introduction port for heated air, a return port for indoor air, and a discharge port for used regeneration air. The adsorption block adsorbs purification target substances in indoor air, and is regenerated by dispersing the adsorbed purification target substances by circulating heated air. The housing accommodates the adsorption block therein. The introduction port for indoor air and the introduction port for heated air are provided on one end side of the housing. The return port for indoor air and the discharge port for used regeneration air are provided on the other end side of the housing. An insulating layer is provided between the housing and an outer surface of the adsorption block.

Abstract: The present disclosure is directed to a dryer system for drying compressed gas discharged from a compressor. The dryer system includes a refrigeration drying system operable for removing moisture from the compressed gas and a desiccant drying system with a desiccant wheel located in series downstream of the refrigeration drying system operable for removing additional moisture from the compressed gas.

Abstract: To manufacture a device by picking and placing semiconductor devices from a carrier substrate to a target substrate using suction force, a subset of pick-up heads of an array of pick-up heads is selectively operated to attach a subset of the semiconductor devices to the subset of pick-up heads by a suction force. The subset of semiconductor devices attached with the pick-up heads are placed over or on a target substrate, and releasing onto the target substrate. The semiconductor devices may be detached from the pick-up heads by releasing or reversing the suction force. The suction force may be created by controllable membranes in the pick-up heads, such as piezoelectric benders.

Abstract: The present disclosure is directed to a dryer system for drying compressed gas discharged from a compressor. The dryer system includes a refrigeration drying system operable for removing moisture from the compressed gas and a desiccant drying system with a desiccant wheel located in series downstream of the refrigeration drying system operable for removing additional moisture from the compressed gas.

Abstract: A compressed air supply system for supplying compressed air to a pneumatic system is disclosed. The compressed air supply system comprises a compressed air input port, a compressed air output port and a vent port, a pneumatic main pipe arranged between the compressed air input port and the compressed air output port, a pneumatic vent pipe arranged between the compressed air output port and the vent port and connected to the pneumatic main pipe, a purge valve arranged in the pneumatic vent pipe for venting the compressed air supply system, a regeneration valve for controlling a regeneration flow of compressed air through an air dryer arranged in the main pipe, a governor valve for generating a pressure signal, and a first and a second pneumatic control pipe.

Abstract: An oxygen separator for generating an oxygen-enriched gas from an oxygen comprising gas, said oxygen separator comprising: a) an oxygen separator device comprising i) a sorbent material for sorbing at least one component of the oxygen comprising gas; and ii) at least two controllable interfaces, comprising a first controllable interface and a second controllable interface, for controlling the communication of gas between the inside and the outside of the oxygen separator device, b) a processor for controlling the oxygen separator such that a plurality of phases are sequentially carried, amongst them a purging phase; wherein the processor is configured to control the at least two controllable interfaces such that a flow of gas is generated between the first controllable interface and the second controllable interface during at least the purging phase, wherein the second controllable interface is located and/or controlled such that it controls the fluidic coupling between the inside of the oxygen separator devi

Abstract: A device and method for measuring concentration of etchant, the device comprises a concentration measuring mechanism and an acid mist elimination mechanism connected with the concentration measuring mechanism, the acid mist elimination mechanism is configured to eliminate acid mist inside the concentration measuring mechanism, and the concentration measuring mechanism is configured to receive etchant in real time, measure absorbance of each kind of acid of the etchant in a non-acid mist environment, and calculate concentration of each kind of acid of the etchant according to the absorbance. It can overcome the interference of the acid mist on concentration measurement of the acid of the acid mixture etchant. In this way, the concentration of each kind of acid of the acid mixture etchant can be online measured rapidly and accurately, and the desiccative gas can be recycled, which achieves the effect of resource conservation.

Abstract: An air dryer includes a supporting base, a drying agent container, and an outer cover. The supporting base includes an inlet for receiving compressed air to be subject to a drying process and an outlet for delivering the processed compressed air that has undergone the drying process. The drying agent container is a container supported on the supporting base, contains a drying agent in the interior, and enables the drying process to be performed by passing the compressed air from the inlet through the drying agent. The outer cover surrounds the outer side of the drying agent container on the supporting base and defines a chamber for storing the compressed air between itself and the drying agent container. The supporting base includes first and second mounting surfaces, which are oriented in different directions, and a plurality of inlets, which are oriented in different directions and receive the compressed air.

Abstract: Systems, equipment and methods suitable for drying a gas, for example a compressed gas, that utilize a drying cycle during which the gas flows through one or more dryer tanks and a desiccant material therein adsorbs a liquid entrained in the compressed gas to produce a dried compressed gas. A regeneration cycle is employed during which a purge gas flows through a purge gas dryer tank. During one or more phases of the regeneration cycle, a desiccant material within the purge gas dryer tank is employed to adsorb water vapor entrained in the purge gas to produce a dried purge gas, which is then directed through the dryer tank as part of the regeneration cycle performed on the desiccant materials within the dryer tanks.

Abstract: A oxygen concentrating system comprising an adsorption column having a first end and a second end, a shell enclosing the column and defining a product gas storage space between the column and the shell, a product conduit connecting the product gas storage space to a product output point, a first conduit comprising at least one first valve having at least a first and second configuration, in the first configuration, compressed air flows from the feed point to the first end, and, in the second configuration, waste gas flows from the first end to the waste point, and a second conduit comprising at least one second valve having at least a first and second configuration, in the first configuration, the product gas flows from the product gas storage space to the second end, and, in the second configuration, the product gas flows from the second end to the storage space.

Abstract: A compressed air drying device includes a support case, a drying container installed in the support case, and a cover installed on the support case while covering the drying container. In load operation, compressed air that flows from an inlet of the support case is dried by a desiccant, and the dried compressed air is discharged. In unload operation, the compressed air inside the cover is passed through the inside of the drying container and oil and water is drained from a drain outlet. The compressed air drying device further includes an inlet opening/closing device that opens the inlet in the load operation, and closes the inlet in the unload operation.

Abstract: A heat and mass exchanger including a plurality of vertical plates that are spaced apart from one another by gaps so as to allow a first gas to flow between the plates. Each plate includes a front wall that defines a front surface of the plate, a back wall that defines a back surface of the plate, and separate, parallel channels disposed between the front and back walls. The parallel channels include a first set of parallel channels, a first liquid flowing within the first set of channels and over one of the front or back surfaces of the plate, the first liquid having a bulk composition comprising one or more constituents, the first gas having at least one constituent in common with the first liquid, and a second set of parallel channels, a first fluid flowing within the second set of channels.

Abstract: An air dryer with a rotor and desiccant positioned within an interior chamber of the rotor. The desiccant is positioned within the interior chamber of the rotor between the inlet and the outlet. The desiccant is configured to adsorb at least some of the water contained within air flowing from an inlet to an outlet of the rotor. As the rotor is rotated at a regeneration speed at least some of the water adsorbed by the desiccant moves to the outer surface of the desiccant and at least some of the water is separated from the outer surface of the desiccant. The rotor directs water separated from the outer surface of the desiccant to at least one opening in the rotor. A method for drying air by sending the air through desiccant and rotating the desiccant at a regeneration speed to separate water from the desiccant.

Abstract: The present disclosure relates to an apparatus and a method of drying the interior of solar modules. The apparatus and the method are particularly suitable for use with concentrator photovoltaic (CPV) modules. The drying apparatus comprises an absorber for drying and a heating device for heating a gas flowing therethrough and is connected to a solar cell via a connection, so that the dried gas is conducted into the solar cell.

Abstract: Systems and methods for removing hydrogen sulfide from biogas resulting from anaerobic digestion of biodegradable waste utilize scrubbing vessels with pressure release devices to vent biogas when necessary to avoid over pressurization of the digesters. Use of iron containing sulfide scavengers in the digesters is avoided which avoids the disposal costs associated with iron containing sludge and the regular need to shut down the digesters to remove scale.

Abstract: A vapor recovery system includes a product handling circuit and a control circuit. The control circuit maintains a negative pressure in the product handling circuit in order to prevent undesirable fugitive vapor emissions.

Abstract: A combustible gas enrichment system includes an adsorption unit charged therein with an adsorbent for selectively adsorbing a combustible gas, a source gas feeding means capable of feeding source gas containing the combustible gas into the adsorption unit from the outside, a suctioning means capable of suctioning the gas from the inside of the adsorption unit and a controlling means for executing an adsorption process for feeding the source gas into the adsorption unit for adsorption of the combustible gas to the adsorbent and a desorption process for desorbing the combustible gas from the adsorbent under the suction force of the suctioning means after the adsorption process and taking the desorbed combustible gas to the outside. The controlling means operates the suctioning means such that the suction force of the suctioning means when no desorption process is effected is smaller than the suction force when the desorption process is effected.

Abstract: This invention relates to a portable odor scrubber system that is inserted into a sewer manhole or lift station where vaporous odors are prone to escape into the external environment. The invention controls such odors which may be caused by hydrogen sulfide, ammonia, mercaptan and other vapors which smell bad and can pose a severe health hazard. The invention has an automatic gas sensor trigger mechanism to control a fan to pull the noxious fumes through a series of scrubbers and to discharge treated air into the environment. Scrubber units may be easily replaced as well as designated to treat different environmental conditions. The invention can also store and transmit gas data information to an offsite location to monitor conditions where the portable odor scrubber system is located.

Abstract: A vapor recovery system includes a product handling circuit and a control circuit. The control circuit maintains a negative pressure in the product handling circuit in order to prevent undesirable fugitive vapor emissions.

Abstract: The present disclosure is directed to the introduction of an additive to a contaminated gas stream. An additive introduction system uses a compressor and carbon dioxide separator to provide a treated carrier gas for introduction of an alkaline additive to a contaminated gas stream.

Abstract: A method is provided for estimating the degree of saturation (S) of a reversible solid ammonia storage material (3) in a storage unit (1). The storage unit (1) is equipped with a heater (2) to release ammonia and a connected tube (4) for ammonia flow. The initial temperature (TINIT) is measured with a sensor (9) in or around the storage unit (1) before any heating is initiated. Heating is initiated while recording the active time of heating (t) or the amount of energy (Q) released by the heater. The desorption pressure created by solid storage material in the storage unit (1) is measured via a pressure sensor (8) in fluid communication with the storage unit (1). The time (tTARGET), or the heat (QTARGET) where the pressure reaches a certain target pressure (PTARGET) is recorded. The values of the target-pressure time (tTARGET), or the target-pressure heat (QTARGET), and the initial temperature (TINIT) are used to compute an approximate degree of saturation (S).

Abstract: A regeneration controller for an air dryer on a vehicle includes a location identifier that determines a current location, a regeneration profile identifier that selects a regeneration profile based on the current location, and a regeneration initiator that initiates regenerations of the air dryer based on the regeneration profile.

Abstract: A Pressure Swing Adsorption filtration that separates a first set of particles and a second set of particles to produce a purified gas output can be monitored in real-time. A sentinel component can provide real-time in situ tracking of a parameter associated with the PSA filtration and dynamically adjusts the PSA filtration based upon the real-time tracked parameter. The real-time monitoring of the parameter further enables maintenance of equipment utilized with the PSA filtration as well as equipment down-the-line that utilize the purified gas output.

Abstract: A dehydrator for dehydrating air supplied to a power related or mechanical device includes a first container configured to hold a desiccant, a first heater arranged with the first container configured to heat the desiccant in the first container, a second container configured to hold a desiccant, and a second heater arranged with the second container configured to heat the desiccant in the second container. The dehydrator further includes a conduit configured to selectively connect one of the first container and the second container to the power related or mechanical device and a controller configured to selectively operate one of the first heater and the second heater.

Abstract: A fluidized reactor system for removing impurities from a gas and an associated process are provided. The system includes a fluidized absorber for contacting a feed gas with a sorbent stream to reduce the impurity content of the feed gas; a fluidized solids regenerator for contacting an impurity loaded sorbent stream with a regeneration gas to reduce the impurity content of the sorbent stream; a first non-mechanical gas seal forming solids transfer device adapted to receive an impurity loaded sorbent stream from the absorber and transport the impurity loaded sorbent stream to the regenerator at a controllable flow rate in response to an aeration gas; and a second non-mechanical gas seal forming solids transfer device adapted to receive a sorbent stream of reduced impurity content from the regenerator and transfer the sorbent stream of reduced impurity content to the absorber without changing the flow rate of the sorbent stream.

Abstract: Various equipment and methods associated with providing a concentrated product gas are provided. In one embodiment, the equipment includes an input device first and second sieve tanks, a variable restrictor, and a controller. In one embodiment, the method includes: a) selecting a desired output setting for the concentrated product gas from a plurality of output settings, b) separating one or more adsorbable components from a pressurized source gaseous mixture via first and second sieve tanks in alternating and opposing pressurization and purging cycles to form the concentrated product gas, and c) selectively controlling a variable restrictor based at least in part on the desired output setting to selectively provide flow between the first and second sieve tanks such that the flow for at least one output setting is different from the flow for at least one other output setting in relation to corresponding pressurization cycles.

Abstract: A moisture separator/heater, including a cylindrical main shell, a moisture separator that removes moisture in steam to be heated that flows in through the bottom of the main shell, a heater disposed above the moisture separator in the main shell, and restricting members disposed in a heating space to sandwich a tube bundle side plate with an outer rail to restrict rounded-back deformation thereof and satisfy an expression of 0.2?L1/L and L2/L?0.4, L represents total length of a straight tube portion, L1 represents distance from one of the pad members closest to a steam heating header to an end of the straight tube portion on the side where the steam heating header is present, and L2 represents distance from one of the pad members closest to a curved tube portion to an end of the straight tube portion on the side where the curved tube portion is present.

Abstract: An oxygen-enricher oxygen tank unit includes a single oxygen tank body, to which a pair of nitrogen absorption containers, which alternately receive a supply of compressed air, are connected; a check valve provided between each of the pair of nitrogen absorption containers and the oxygen tank body, wherein each check valve allows gas to flow from an associated nitrogen absorption container to the oxygen tank body, and does not allow gas to flow in a reverse direction thereto; and a pressure-reducing valve, having an oxygen outlet, which is connected to the oxygen tank body. At least one of the pressure-reducing valve and a pair of nitrogen absorption container connector-cylinders, which is provided with the check valve, is directly attached to a body-wall surface of the oxygen tank body. Hence, the structure around the oxygen tank body is simplified and unitized.

Abstract: A swing adsorption process for removing contaminants from a gaseous feed stream through a combination of a selective adsorbent material containing an effective amount of a non-adsorbent filler, adsorbent contactor design, and adsorption cycle design.

Abstract: Various equipment and methods associated with providing a concentrated product gas are provided. In one embodiment, the equipment includes an input device first and second sieve tanks, a variable restrictor, and a controller. In one embodiment, the method includes: a) selecting a desired output setting for the concentrated product gas from a plurality of output settings, b) separating one or more adsorbable components from a pressurized source gaseous mixture via first and second sieve tanks in alternating and opposing pressurization and purging cycles to form the concentrated product gas, and c) selectively controlling a variable restrictor based at least in part on the desired output setting to selectively provide flow between the first and second sieve tanks such that the flow for at least one output setting is different from the flow for at least one other output setting in relation to corresponding pressurization cycles.

Abstract: Embodiments of the invention are directed towards a trap canister for adsorbing fuel vapor contained in breakthrough gas discharged from a main adsorbent canister. The main adsorbent canister is connected to a fuel tank has a case defining an adsorption chamber therein and an adsorbent filled in the adsorption chamber. The case has a first end open to the atmosphere and a second end for introducing breakthrough gas into the adsorption chamber. The adsorbent filled in the adsorption chamber adsorbs the fuel vapor contained in the breakthrough gas. The trap canister further has a bypass path for bypassing the adsorption chamber and a valve configured to block the bypass path and to allow for opening during refueling. This prevents the fuel vapor from flowing into the atmosphere during normal operation while also decreasing pressure loss during refueling.

Abstract: Systems and methods for producing a product gas are provided. In one embodiment, a system includes at least one separation bed to separate adsorbable components from a gas source, a valving means to selectively direct gas from the gas source to the at least one separation bed, at least one sensing device associated with the at least one separation bed to sense the progress of an adsorption zone within the separation bed, and a controller. The controller includes logic to read the output of the at least one sensing device and control the gas separation process based on the progress of the adsorption zone.

Abstract: A gas concentrating system is provided. The system includes, for example, a gas separation system having at least one separation space, at least one sensor connected to the separation space and providing at least one output signal indicative of the progress of gas separation, at least one pump system associated with gas separation system; and a controller. The controller includes, for example, logic reading the sensor output signal and logic controlling at least one parameter of the pump system based on the sensor output signal. The parameter of the pump system can be any parameter affecting the characteristics or operation of the pump system. Examples are disclosed but are not intended to be limiting.

Abstract: A carbon canister as utilized relative to underground fuel storage tank vapor recovery, including for the capture and purging of hydrocarbon vapors as air is introduced into and released from an underground storage tank, and wherein, in one form intended primarily for use in Stage II Vapor Recovery systems, the carbon canister includes a valve activated by weight of saturated carbon and wherein, in another form intended primarily for use in Stage I Vapor Recovery systems, the carbon canister is a free breathing carbon canister with a surge protection device.

Abstract: A control device for a compressed air preparation device of a vehicle outputs output signals for adjusting feed phases and regeneration phases of the compressed air preparation device. A compressor feeds compressed air via an air dryer having a desiccant into a compressed air reservoir in a feed phase, and compressed air is passed out of the compressed air reservoir through the air dryer for drying the desiccant in a regeneration phase. The control device adjusts the regeneration phases depending on a current or future engine load and/or a current or future consumption of compressed air by the vehicle. In overrun phases, the desiccant can be excessively dried to a low moisture level in order to save fuel in later travel segments. Route-optimized regeneration of the desiccant as a function of engine load and/or utilization phases can also be effected.

Abstract: Lightweight, small, portable devices and methods are disclosed that provide oxygen-enriched air using an ultra rapid adsorption cycle based on advanced molecular sieve materials.

Abstract: The present invention provides oxygen concentrators which achieve reliable pressure control in the oxygen columns with reduced number of components for pressure control in the oxygen columns, and also easy maintenance and reduced power consumption. PSA, PVSA, or VSA oxygen concentrator consisting of oxygen concentration columns BF1 and BF2, pressure control means for adjusting pressure in the oxygen concentration columns, and oxygen tank T for storing concentrated oxygen, comprises mechanical flow control means SC1 which regulates flow from the oxygen tank to the oxygen concentration columns. Pressures in the oxygen concentration columns BF1 and BF2 are kept within a predetermined range by the function of mechanical flow control means SC1 placed in between the oxygen concentration columns and the oxygen tank.

Abstract: A breathing gas supply system for an aircraft includes a plurality of oxygen concentrating apparatus, each of which in use, is operable to supply oxygen enriched gas to a breathing gas supply. Each oxygen concentrating apparatus includes at least two active molecular sieve beds which are operable so that while one sieve bed is adsorbing non-oxygen gas from a pressurized gas supply, the or another bed is being purged of non-oxygen gas by subjecting the bed to lower pressure. Each oxygen concentrating apparatus includes an oxygen enriched gas flow control device which permits the flow of oxygen enriched gas produced by the oxygen concentrating apparatus to the breathing gas supply and permits a restricted flow of oxygen enriched gas from the breathing gas supply to the oxygen concentrating apparatus. Oxygen enriched gas produced by the adsorbing sieve bed flows direct to the bed being purged.

Abstract: A gasoline vapor treating system includes a single hydrocarbon filter apparatus interconnected to a fuel tank having a range of vapor pressures therein, said filter apparatus receiving hydrocarbon vapors from said tank for one vapor pressure in said fuel tank and said filter apparatus delivering air and hydrocarbon vapor to said tank from said filter responsive to another vapor pressure in said tank lower than said one vapor pressure, said filter operated serially between hydrocarbon loading and hydrocarbon unloading cycles without reference to any other hydrocarbon removal apparatus. A balance nozzle includes a mechanism to mechanically operate a vapor valve therein before the fuel valve is opened.

Abstract: The invention relates to an air cleaner, and more particularly to an air cleaner which includes a regenerative deodorizing filter to purify and treat gaseous substances contained in air, thus enabling efficient regeneration of the regenerative deodorizing filter, and a method of regenerating the filter of the air cleaner.

Abstract: An adsorption drying apparatus, in particular for drying a compressed gas, includes an adsorption chamber (11) having a plurality of adsorption conduits (101) containing an adsorption material (123), a first feeding line (106) and a first discharging line (109) disposed at a first end (111) of the adsorption chamber (11), and a second feeding line (108) and a second discharging line (107) disposed at a second end (112) of the adsorption chamber (11). The adsorption chamber (11) is rotatable with respect to the feeding and discharging lines (106, 107, 108, 109) so that the adsorption conduits may be fluidically connected in temporal alternation, wherein the gas is dried in a drying sector (102), and the adsorption material (123) is regenerated in the regeneration sector (103). The first feeding line (106) is configured such that the gas stream to be dried may be fed to the regeneration sector (103) as a full flow.

Abstract: A method and apparatus for supplying oxygen to meet a user demand in which oxygen is separated from air by an electrically driven oxygen separation device to supply oxygen to meet the user demand and to charge an adsorbent bed with all or part of the separated oxygen. When a user demand exists, oxygen can be supplied from both the electrically driven oxygen separation device and from oxygen desorbed from the adsorbent bed.

Abstract: An exemplary embodiment of the present invention provides an induced-draft injection system comprising an injection line in fluid communication with a duct under negative pressure, a particulate storage containing particulate, and a feeder receiving the particulate from the particulate storage and feeding the particulate to the injection line. The negative pressure in the duct supports the transportation of at least a portion of the particulate through the injection line and into the duct. Inside the duct, a binding portion of the particulate is bound to a portion of mercury in a flue gas passing through the duct, thus enabling a portion of the mercury to be filtered out of the flue gas.

Abstract: In a compressed air preparation device (1), a drying device (4) is arranged in a pressure line (2) that conducts compressed air. In order to control the supply of compressed air, a governor valve (19) is provided, wherein said governor valve can be actuated by pressure and in an electrical control operation is pilot controlled at a high pressure level by a solenoid valve that can be electrically actuated and which responds at a second, lower pressure level when the electrical signal at the solenoid valve is discontinued. In order to ensure that a motor vehicle equipped with the compressed air preparation device (1) can continue to travel in a nearly unlimited manner when the electrical control of the valves fails, means for carrying out the regeneration of the drying device (4) are provided according to the invention. Said means can be controlled by the governor valve (19) at the second, lower pressure level when the electrical supply fails.

Abstract: An oxygen generator (10) similar to a suitcase includes a compressor unit (24) and an oxygen separating unit (38). These two units have, together with auxiliary components, substantially the same axial dimensions as one another and are arranged next to one another in the interior of a suitcase-shaped housing (68).

Abstract: The present invention provides oxygen concentrators which achieve reliable pressure control in the oxygen columns with reduced number of components for pressure control in the oxygen columns, and also easy maintenance and reduced power consumption. PSA, PVSA, or VSA oxygen concentrator consisting of oxygen concentration columns BF1 and BF2, pressure control means for adjusting pressure in the oxygen concentration columns, and oxygen tank T for storing concentrated oxygen, comprises mechanical flow control means SC1 which regulates flow from the oxygen tank to the oxygen concentration columns. Pressures in the oxygen concentration columns BF1 and BF2 are kept within a predetermined range by the function of mechanical flow control means SC1 placed in between the oxygen concentration columns and the oxygen tank.

Abstract: A vacuum-pressure swing absorption concentrator includes a motor driven compressor having pressure and vacuum heads that are connected to a pressure reservoir and a vacuum reservoir respectively. The pressure and vacuum reservoirs are selectively and alternately interconnected in sequence through a main valve to a pair of nitrogen filtering sieve beds. A controller operates the valve to alternately and cyclically interconnect the sieve beds to the pressure and vacuum reservoirs respectively. During each cycle, a respective bed is pressurized and enriched oxygen is produced and delivered to a tank for use by a patient. At the same time, the other bed is evacuated through the vacuum reservoir. A crossover valve delivers oxygen from a pressurized bed to an evacuated bed to facilitate purging of impurities previously collected in the evacuated bed.

Abstract: An oxidizing gas purification apparatus (1) for a fuel cell (7) has a compressor (2) that compresses oxidizing gas and sends the oxidizing gas; a cooling apparatus (4), disposed downstream from the compressor (2), that cools the oxidizing gas passing therethrough; an adsorbent unit (5b), disposed downstream from the cooling apparatus (4), that houses an adsorbent (5a) that adsorbs impurities included in the oxidizing gas sent from the cooling apparatus (4) at a prescribed adsorption temperature and releases the adsorbed impurities at a prescribed thermal regeneration temperature that is above the prescribed adsorption temperature by control of the operation of the cooling apparatus (4) to cool the oxidizing gas that has a temperature above the prescribed adsorption temperature and that is sent from the compressor (2).