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.

An apparatus for supplying oxygen includes: a compressor assembly configured to compress air and supply compressed air; an adsorption bed assembly comprising a plurality of adsorption beds configured to adsorb nitrogen from the compressed air supplied by the compressor assembly through a pressure swing adsorption process to produce concentrated oxygen; a cover formed to surround the compressor assembly and the adsorption bed assembly; and a cover configured to accommodate the cover and having an air inlet through which air supplied to the compressor assembly flows. The cover is configured to allow the air supplied through the air inlet to pass through a space where the compressor assembly is disposed and then be discharged to an outside.

In various aspects, methods are provided for hydrogen production while reducing and/or mitigating emissions during various refinery processes that produce syngas, such as power generation. Syngas can be effectively separated to generate high purity carbon dioxide and hydrogen streams, while reducing and/or minimizing the energy required for the separation, and without needing to reduce the temperature of the flue gas. In various aspects, the operating conditions, such as high temperature, mixed metal oxide adsorbents, and cycle variations, for a pressure swing adsorption reactor can be selected to minimize energy penalties while still effectively capturing the CO.sub.2 present in syngas.

A method for hydrogen production by pressure swing adsorption that can increase the recovery efficiency of an adsorption target component while enabling an off-gas to be appropriately supplied to a combustion device is provided that can achieve a cost reduction and an increase in the efficiency of the combustion operation.

An oxygen concentrating apparatus includes: at least one adsorption bed which is filled with absorbent capable of selectively adsorbing nitrogen relative to oxygen; an air supplier which supplies pressurized air to the adsorption bed; a flow channel regulating valve unit which regulates flow channels by allowing the pressurized air to be supplied to the adsorption bed from the air supplier and by allowing the air to be discharged from the adsorption bed to be depressurized such that a nitrogen adsorption process and a nitrogen desorption process are alternately performed; and a water removing unit which separates water from the pressurized air supplied from the air supplier and removes the separated water. The flow channel regulating unit and the water removing unit are at least partially housed within a single housing.

One embodiment of the present invention sets forth a technique for operating an oxygen concentrator. The technique includes measuring a product gas within an oxygen concentrator to produce a product gas measurement, and determining that an output of the oxygen concentrator is fluidly connected to a respiratory ventilation device based on the product gas measurement. The technique further includes, in response to determining that the oxygen concentrator is fluidly connected to the respiratory ventilation device, determining that the output of the oxygen concentrator does not meet a supply gas requirement of the respiratory ventilation device and, in response to determining that the output of the oxygen concentrator does not meet the supply gas requirement, adjusting a control output in the oxygen concentrator to modify operation of the oxygen concentrator.

An oxygen concentrating apparatus includes: at least one adsorption bed which is filled with absorbent capable of selectively adsorbing nitrogen relative to oxygen; an air supplier which supplies pressurized air to the adsorption bed; a flow channel regulating valve unit which regulates flow channels by allowing the pressurized air to be supplied to the adsorption bed from the air supplier and by allowing the air to be discharged from the adsorption bed to be depressurized such that a nitrogen adsorption process and a nitrogen desorption process are alternately performed; and a water removing unit which separates water from the pressurized air supplied from the air supplier and removes the separated water. The flow channel regulating unit and the water removing unit are at least partially housed within a single housing.

A pressure swing adsorption (PSA) system for purifying a feed gas is provided. The PSA system may have a first adsorber bed and a second adsorber bed, each having a feed port, a product port, and adsorbent material designed to adsorb one or more impurities from the feed gas to produce a product gas. The PSA system may also have a network of piping configured to direct the feed gas to the feed ports of the adsorber beds and direct the product gas to and from the product ports of the adsorber beds. The network of piping may also be configured to transfer gas between the first adsorber bed and the second adsorber bed during a pressure equalization step and a purge step. The PSA system may also have a first valve configured to direct flows of the feed gas and the product gas through the network of piping. The PSA system may further have a first orifice configured to regulate a flow rate of gas between the first adsorber bed and the second adsorber bed during at least one of the pressure equalization step and the purge step.

This disclosure relates to the adsorption and separation of fluid components, such as oxygen, in a feed stream, such as air, using zeolite ITQ-55 as the adsorbent. A process is disclosed for adsorbing oxygen from a feed stream containing oxygen, nitrogen and argon. The process comprises passing the feed stream through a bed of an adsorbent comprising zeolite ITQ-55 to adsorb oxygen from the feed stream, carrying out an equalization step to improve recovery, thereby producing a nitrogen product stream depleted in oxygen as well as a waste stream can be collected to have enriched oxygen. The feed stream is exposed to the zeolite ITQ-55 at effective conditions for performing a rapid cycle of kinetic separation, in which oxygen exhibits greater kinetic selectivity than nitrogen and argon.

The present disclosure relates to a pressure swing adsorption apparatus for hydrogen purification from decomposed ammonia gas and a hydrogen purification method using the same, and more particularly, the pressure swing adsorption apparatus of the present disclosure includes a plurality of adsorption towers including a pretreatment unit and a hydrogen purification unit wherein the adsorption towers of the pretreatment unit and the hydrogen purification unit are packed with different adsorbents, thereby achieving high purity hydrogen purification from mixed hydrogen gas produced after ammonia decomposition, making it easy to replace the adsorbent for ammonia removal, minimizing the likelihood that the lifetime of the adsorbent in the hydrogen purification unit is drastically reduced by a very small amount of ammonia, and actively responding to a large change in ammonia concentration in the raw material. Additionally, a hydrogen purification method using the pressure swing adsorption apparatus of the present disclosure physically adsorbs and removes impurities such as moisture (H.sub.2O), ammonia (NH.sub.3) and nitrogen (N.sub.2) included in mixed hydrogen gas produced after ammonia decomposition below extremely small amounts, thereby achieving high purity hydrogen purification with improved selective adsorption of moisture, ammonia and nitrogen and maximized hydrogen recovery rate and productivity. In addition, since the temperature swing adsorption process is not introduced, there is no need for a heat source for regeneration, thereby reducing the driving cost.