A piece of equipment commonly used in many petrochemical and refinery processes is a pressure swing adsorption (PSA) unit. A PSA unit may be used to recover and purify hydrogen process streams, such as from hydrocracking and hydrotreating process streams. Aspects of the present disclosure are directed to monitoring PSA unit processes for potential and existing issues, providing alerts, and/or adjusting operating conditions to optimize PSA unit life. There are many process performance indicators that may be monitored including, but not limited to, flow rates, chemical analyzers, temperature, and/or pressure. In addition, valve operation may be monitored, including opening speed, closing speed, and performance. The system may adjust one or more operating characteristics to decrease the difference between the actual operating performance in the recent and the optimal operating performance.

Disclosed in the present invention are a pressure equalizing system for air separation purification, and a control method. The system comprises: a first air main pipe; a pressurizing gas pipeline, which is connected to the first air main pipe and used for receiving a pressurizing gas and delivering same to the first air main pipe; and a control valve, located on the pressurizing gas pipeline, and having a degree of opening regulated by the flow regulator, thereby regulating an air intake amount of the pressurizing gas pipeline. The present invention solves the problem of an air separation rectification process being affected when dry nitrogen is used for pressure equalization of an adsorber; in the switching process of entering an adsorption stage from a regeneration stage, pressurizing dry nitrogen used in a pressure equalizing step previously mixes with damp air from a main air compressor before entering the adsorber, such that the gas components flowing towards an air separation cold box remain substantially unchanged, in order to reduce disturbance in conditions of gas entering a rectification column to take part in rectification due to a gas component gradually changing from dry nitrogen to dry air in the prior art, thus stabilizing the process conditions of the air separation cold box.

A method for managing a pressure swing adsorption gas treatment unit, the unit having at least N adsorbers, N being a number greater than or equal to 6. Wherein, when a first group and a second group each comprise at least one operational adsorber and at least one defective adsorber. A method including a) shutting down the unit, b) isolating the defective adsorbers from the unit, c) configuring the connections to swap the instrumentation means of the defective adsorber of the first group with the instrumentation means of the operational adsorber of the second group, so that the first group once again, so far as the control device is concerned, comprises n operational adsorbers, and d) setting the control device so that it controls the unit by running the downgraded cycle, excluding the second group.

An aspect of the disclosure is a diagnostic system. The diagnostic system includes a communications interface, an output gas interface, one or more sensors, and a controller that is configured to execute a diagnostic procedure. The diagnostic procedure causes the controller to transmit one or more commands to the oxygen concentrator using the communications interface, to obtain the one or more gas property measurements from the one or more sensors during operation of the oxygen concentrator, and to determine a diagnostic result by comparing the one or more gas property measurements obtained from the one or more sensors during operation of the oxygen concentrator to a testing standard described by the diagnostic procedure. The diagnostic procedure also causes the controller to output information regarding the diagnostic result for display to a user.

Provided herein are metal organic frameworks comprising metal nodes and N-donor organic ligands which have high selectivity and stability in the present of gases and vapors including H.sub.2S, H.sub.2O, and CO.sub.2. Methods include capturing one or more of H.sub.2S, H.sub.2O, and CO.sub.2 from fluid compositions, such as natural gas.

This invention uses a fixed-bed adsorber, interchangeably called a capacitor herein, to process the product stream coming out of a regenerable adsorption system such as a temperature swing adsorption system (TSA) or pressure swing adsorption system (PSA). The fluid stream coming out of this fixed-bed capacitor will have a more uniform composition than the one entering the adsorption system or the capacitor. The fixed-bed adsorber operates in a once-through non-cyclic manner, similar to a conventional fixed bed reactor or adsorber.

A system for pressure swing adsorption including: a plurality of beds each performing at least one of an adsorbing process, a pressure equalizing process, a vacuum process, or a pressurizing process; a supply valve provided in each of the beds and connected to a mixed gas supply unit to supply a mixed gas to the bed; a discharge valve provided in each of the beds and connected to a hydrogen gas discharge unit to discharge hydrogen generated in the bed; a vacuum valve provided in each of the beds and connected to a vacuum pump so as to be open to the vacuum pump during the vacuum process of the bed; and a control unit that controls the supply valve, the discharge valve, and the vacuum valve to allow each of the beds to perform the adsorbing process, the pressure equalizing process, the vacuum process, or the pressurizing process.

Systems and methods of separating components of a multi-component gas mixture are described herein. The systems include one or more packed bed columns packed with a biosorbent material. Upon passing the multi-component gas mixture through the packed bed column, substantially all of a polar component of the multi-component gas mixture is adsorbed by the biosorbent material and a non-polar component of the multi-component gas mixture is not substantially adsorbed by the biosorbent material.

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 information management system provided with a plurality of external devices able to send and receive information and a server configured to be able to communicate with the external devices. The external devices are configured to send to the server the amounts of CO.sub.2 recovery recovered by the vehicles provided with the CO.sub.2 recovery devices. The server is configured to add up and manage the amounts of CO.sub.2 recovery sent from the external device.