Disclosed herein are a pressure swing adsorption (PSA) separation-purification system and process integrated with a water gas shift reaction process. According to the invention, the adsorption/desorption heat of a PSA separation-purification device is controlled using a reaction effluent and a refrigerant of a water gas shift reaction process without using additional components such as a heat exchanger or a heating means or without changing the structure of a PSA separation-purification device, thus achieving the best separation-purification performance of the PSA separation-purification device.

A system and method of regenerating a pre-purification vessel is provided that is particularly suitable for pre-purification of a feed air stream in cryogenic air separation unit that uses an oxygen-enriched purge gas stream for regeneration of the pre-purification unit. The disclosed pre-purification systems and methods are configured to remove substantially all of the water, carbon dioxide and other impurities from a feed air stream, optionally including hydrogen and carbon monoxide impurities. The method of regenerating a pre-purification vessel preferably involves regenerating the pre-purification vessel with an oxygen-enriched purge gas after depressurization of the vessel and thereafter partially repressurizing the pre-purification vessel with an auxiliary purge gas thereby diluting the oxygen concentration of the gases contained in the pre-purification vessel and optionally depressurizing the partially repressurized vessel.

A system and method of regenerating a pre-purification vessel is provided that is particularly suitable for pre-purification of a feed air stream in cryogenic air separation unit that uses an oxygen-enriched purge gas stream for regeneration of the pre-purification unit. The disclosed pre-purification systems and methods are configured to remove substantially all of the water, carbon dioxide and other impurities from a feed air stream, optionally including hydrogen and carbon monoxide impurities. The method of regenerating a pre-purification vessel preferably involves regenerating the pre-purification vessel with an oxygen-enriched purge gas after depressurization of the vessel and thereafter partially repressurizing the pre-purification vessel with an auxiliary purge gas thereby diluting the oxygen concentration of the gases contained in the pre-purification vessel and optionally depressurizing the partially repressurized vessel.

The present invention relates to novel sulfur-doped carbonaceous porous materials. The present invention also relates to processes for the preparation of these materials and to the use of these materials in applications such as gas adsorption, mercury and gold capture, gas storage and as catalysts or catalyst supports.

A process for separating components of a fluid mixture using membranes comprising a selective layer made from copolymers of perfluorinated dioxolanes. The resulting membranes have superior selectivity performance for fluid pairs of interest while maintaining fast fluid permeance compared to membranes prepared using conventional perfluoropolymers, such as Teflon® AF, Hyfion® AD, and Cytop®.

The present disclosure provides an exhaust system for discharging from semiconductor manufacturing equipment a hazardous gas. The exhaust system includes: a main exhaust pipe having a top surface and a bottom surface; a first branch pipe including an upstream end coupled to a source of a gas mixture containing the hazardous gas and a downstream end connected to the main exhaust pipe through the top surface; a second branch pipe including a downstream end connected to the main exhaust pipe through the bottom surface; and a detector configured to detect presence of the hazardous gas in the second branch pipe.

Provided is an electromechanical hydrogen pump, including: (i) an electrolyte membrane; (ii) an anode electrode layer and an anode diffusion layer that are provided at one side of the electrolyte membrane; (iii) a cathode electrode layer and a cathode diffusion layer that are provided at the other side of the electrolyte membrane; (iv) an anode seal that has openings each surrounding the anode diffusion layer; (v) a cathode seal that has openings each surrounding the cathode diffusion layer; (vi) an anode separator that is placed on an outer side of the anode diffusion layer; and (vii) a cathode separator that is placed on an outer side of the cathode diffusion layer, wherein no spaces are provided between the anode diffusion layer and the anode seal or between the cathode diffusion layer and the cathode seal.

A gas adsorbing material particle includes an additive material particle having a moisture adsorption property; and a layer of a gas adsorbing metal disposed on a surface of the additive material particle, wherein the gas adsorbing metal is inactivated by moisture and adsorbs a target gas, wherein an average thickness of the layer of the metal is less than or equal to about 37 micrometers.

The present invention concerns a method (100) for the production of a propylene product (9) in which a component mixture (2) containing propane, propylene and hydrogen is provided using a propane dehydrogenation (10) to which a reaction feed (1) containing propane and hydrogen is subjected, the component mixture (2) or a part thereof being subjected as a first separation feed to a first membrane separation (40), by means of which a first permeate (3) enriched in hydrogen with respect to the first separation feed and a first retentate (4) depleted in hydrogen with respect to the first separation feed and containing hydrogen, propane and propylene are formed, the first retentate (4) or part thereof being subjected to a second membrane separation (50) as a second separation feed, in which a second permeate (6) containing at least the predominant part of the hydrogen of the second separation feed and a second retentate containing at least the predominant part of the propane and the propylene of the second separation feed are formed, wherein the first membrane separation (40) is carried out using a sweep gas (5) containing propane and the first permeate (3) is obtained as a permeate (3) charged with propane of the sweep gas (5) and/or the second membrane separation (50) is carried out using the sweep gas (5) containing propane and the second permeate (6) is obtained as a permeate (6) charged with propane of the sweep gas (5), and wherein the first permeate (3) charged with propane of the sweep gas (5) and/or the second permeate (3) charged with propane of the sweep gas or one or more parts thereof is used in the formation of the reaction feed (1). A corresponding plant is also the subject of this invention.

An adsorption storage tank for a natural gas includes a pressurizable tank disposed on a vehicle to contain the natural gas. A natural gas adsorbent is disposed in the tank. The natural gas is a mixture of constituents having a constituent statistical distribution of molecule lengths and kinetic diameters. The adsorbent has a pore size statistical distribution of pore sizes to adsorb and desorb the mixture of constituents.