The present invention relates to the CO.sub.2 and O.sub.2 remover. The CO.sub.2 and O.sub.2 remover comprises 65 to 85 weight percent (wt. %) of a nickel oxide (NiO), 5 to 20 wt. % of a magnesium oxide (MgO), wherein the weight ratio of the nickel oxide and the magnesium oxide (NiO/MgO) is 4 to 11, and wherein the wt. % is based on the weight of the CO.sub.2 and O.sub.2 remover.

A concentration device includes a substrate that has a flow path formed therein extending from an inlet-side opening into which a liquid to be concentrated is introduced to an outlet-side opening, and a desiccant that is disposed in containing spaces in the substrate to face a liquid in the flow path across air layers.

The present disclosure concerns systems and sorbents for the removal of carbon dioxide from ambient air. In some aspects, the system includes a wind collector, a body and an outlet. The body has a monolith or platforms dispersed therein, surfaces of which are at least partially coated in a sorbent, such that passing ambient air that contacts the sorbent, thereby allowing for the removal of carbon dioxide therefrom. Sorbents of the present disclosure include substrates that are hybrids of a silica, optionally with a carbonaceous material, and an epoxy-modified aminopolymer.

A portable pressure swing adsorption method and system for fuel gas conditioning. A fuel gas conditioning system includes a pressure swing adsorption (PSA) system fluidly coupled to a rich gas stream, the PSA system including a plurality of adsorbent beds and configured to condition the rich natural gas stream and produce therefrom a high-quality fuel gas and gaseous separated heavier hydrocarbons, a product end of the adsorbent beds fluidly coupled to a fuel gas line, wherein the high-quality fuel gas is discharged from the product end and supplied to the fuel gas line, and a feed end of the adsorbent beds configured to be fluidly coupled to the rich natural gas stream or a raw natural gas stream, wherein the produced gaseous separated heavier hydrocarbons are recirculated into the rich natural gas stream or the raw natural gas stream.

Provided is a method for desulphurizating and denitrating a flue gas in an integrated manner based on low-temperature adsorption. The method includes: decreasing a temperature of the flue gas below a room temperature by using a flue gas cooling system; removing moisture in the flue gas by using a dehumidification system; sending the flue gas to a SO.sub.2 and NO.sub.x adsorbing column system; and simultaneously adsorbing SO.sub.2 and NO.sub.x of the flue gas with a material of activated coke, activated carbon, a molecular sieve or diatom mud in the SO.sub.2 and NO.sub.x adsorbing column system to implement an integration of desulphurization and denitration of the flue gas based on the low-temperature adsorption. With the present method, SO.sub.2 and NO.sub.x of the flue gas can be adsorbed simultaneously in an environment having a temperature below the room temperature.

The present invention provides a heat-driven adsorption vacuum dehumidification system including a vapor adsorption apparatus having a water permeable hydrophilic membrane separating the apparatus into at least a feed section and a low-pressure or vacuum section (evaporator), and providing a water vapor pressure difference to extract moisture from the air flowing through the apparatus into the evaporator, followed by adsorption in an adsorption chamber, and subsequently desorbed when acted as a desorption chamber to form water vapor which is condensed in a condenser. Adsorption and desorption chambers inter-change periodically to form a complete system cycle. Heating of chamber/compartment can be from waste heat or a renewable source in the absence of any electricity supplied externally. Related method for using a heat-driven adsorption vacuum dehumidification system to remove moisture from the air is also provided. The present invention is superior to the adsorption chiller over a wide range of operating conditions.

A sieve bed assembly monitoring system is disclosed. The system includes a sieve bed assembly including a canister having an intake; adsorbent material to produce oxygen enriched air from compressed air in a swing adsorption process; and an identification device including identification data for the sieve bed assembly, wherein the identification data is capable of uniquely identifying the sieve bed assembly. The system includes an oxygen concentrator having a retention mechanism to retain the sieve bed assembly, a compressor supplying compressed air to the intake of the canister, a controller, a transceiver and a reader operable to read the identification data from the identification device. The controller reads the identification data and transmits the read identification data via the transceiver. A remote external device receives the read identification data from transceiver.

This disclosure is related to systems, methods, apparatuses, and techniques for generating water using waste heat. In certain embodiments, a system includes a water generating unit and a waste-heat-generating-system. The water generating unit can be configured to generate the water and comprises a desiccation device and a condenser coupled to the desiccation device. The waste-heat-generating-system can generate the waste heat when operating or is use. The water generating unit can be configured to use waste heat generated by the waste-heat-generating-system to generate the water.

A stable, solid, externally dry particulate system for controlling humidity to a selected range comprising a hydrophobic silica component and a hydrophilic silica component where the hydrophobic component comprises about 4 to 10 wt. % hydrophobic nano silica particles and from about 96 to 90 wt. % of a mixture of a saturated solution of at least one soluble solid and undissolved at least one soluble solid, and the hydrophilic micro silica component comprises from about 20 to 40 wt. % hydrophilic silica particles and about 80 to 60 wt.% of the mixture of the saturated solution of at least one soluble solid and the undissolved at least one soluble solid. The saturated solution is made of at least one soluble solid dissolved into a polar liquid and has an equilibrium relative humidity when a saturated solution in the polar liquid.

A multi-functional composition of matter that is useful for injection into a flue gas stream to rapidly and efficiently remove mercury from the flue gas stream. The multi-functional composition of matter may include a fixed carbon sorbent and minerals, halogens in the form of halide salts, as well as other physical and chemical properties to enhance (1) the oxidation reaction kinetics for the oxidation of mercury species and (2) the mass diffusion kinetics of the mercury species.