Systems and methods for producing water from process gas are provided herein. The systems include a water generating system that adjusts the pressure and temperature conditions surrounding a hygroscopic material in order to release water vapor generated by exposure of the hygroscopic material to the process gas.

An apparatus for capturing a water content from a water containing gas, the apparatus comprising: a housing having an inlet into which the water containing gas can flow; a water adsorbent located in the housing, the water adsorbent comprising at least one water adsorbent metal organic framework composite capable of adsorbing a water content from the water containing gas; and a water desorption arrangement in contact with and/or surrounding the water adsorbent, the water desorption arrangement being selectively operable between (i) a deactivated state, and (ii) an activated state in which the arrangement is configured to apply heat, a reduced pressure or a combination thereof to the water adsorbent to desorb a water content from the water adsorbent.

The present invention relates to a smart dehumidification apparatus and dehumidification method of a flow rate-dependent switching method. The present invention provides an adsorption-type dehumidification apparatus and a dehumidification method using same, the adsorption-type dehumidification apparatus comprising: a first adsorption tower (A) and a second adsorption tower (B) which are two adsorption towers filled with adsorbents and which alternately perform a dehumidification process and a regeneration process; an inflow line (10) for introducing a humidified gas into the first adsorption tower (A) and the second adsorption tower (B); a discharge line (20) for discharging a dried gas dehumidified in the first adsorption tower (A) and the second adsorption tower (B); a regeneration line (30) for introducing a regeneration gas into the first adsorption tower (A) and the second adsorption tower (B); a heater (40) for heating the regeneration gas; a flow meter (F) for measuring the flow rate of the humidified gas flowing into the first adsorption tower (A) and the second adsorption tower (B); and a control unit (C). According to the present invention, the moisture contained in compressed air, etc., is dried through adsorption and regeneration, and the dehumidification process (adsorption process) and the regeneration process are switched depending on the flow rate of the humidified gas flowing into the adsorption towers (A, B) such that at least the renewable energy consumed in the regeneration process can be reduced.

The direct air capture (DAC) systems and methods efficiently and economically regenerate a desiccant bed without adding any thermal energy and without requiring any pressurization or depressurization of the desiccant reactors. The methods leverage water concentration differences in stream flows, the water concentration profile across a desiccant bed, and, optionally, exothermic water adsorption. These three elements, working in combination, are referred to as “reverse dry flow regeneration” or a “reverse dry air swing” regeneration process. Systems and methods for reverse flow regeneration include those for CO.sub.2 DAC applications, but they are also applicable to point source carbon capture and other similar technologies that require initial gas dehydration before exposure to a hydrophilic material.

The present invention is based on the use of surface adsorption to capture CO.sub.2 molecules from air, without requiring the need for bulk absorption within the bulk of the sorbent. Since surface adsorption is a much faster process than bulk absorption, the present invention offers a greatly increased CO.sub.2 capture rate, as well as a greatly improved energy efficiency, over conventional systems. The invention involves the use of a molecular monolayer of CO.sub.2 sorbent, a process and a system for capturing CO.sub.2 from air employing such a molecular monolayer of CO.sub.2 sorbent.

A device for mass and/or heat transfer includes a mass and/or heat transfer (MHX) plate having a thickness in a range from 0.5 mm to 5 mm and including a supporting matrix that is thermally conductive, and a functional material in the supporting matrix, wherein a volume fraction of the functional material in the MHX plate is in a range from 0.2 to 0.8, and a heat exchange tube configured to transport a thermal fluid and disposed on the MHX plate so that heat is transferred between the thermal fluid and the MHX plate, wherein a surface of the MHX plate includes a process flow channel of hydraulic diameter in a range from 0.3 mm to 3 mm and a process fluid in the process flow channel exchanges mass and/or heat with the MHX plate.

An apparatus for collecting a gaseous pollutant from air within a poultry or other concentrated animal feeding enclosure may comprise multiple vertical panel-beds each containing a solid sorbent; a fan to pass the air within the poultry enclosure through the multiple vertical panel-beds and over the solid sorbent; an outlet gate configured to release the solid sorbent from the multiple vertical panel-beds after the fan passes the air over the solid sorbent; a regeneration vessel configured to regenerate the released solid sorbent by recovering the gaseous pollutant from the released solid sorbent; and a conveyor configured to return the regenerated solid sorbent to the multiple vertical panel-beds.

A method for separating mixed xylene includes steps that the mixed xylene is subjected to adsorption separation by means of an adsorbent having a metal organic framework material, so that one or more of xylene isomers are separated out. An organic ligand in the metal organic framework material is 2,5-dihydroxy-1,4-benzoquinone. Xylene isomers can be effectively separated using this method.

A Brayton cycle adsorption desalination system includes an adsorption desalination system including an evaporator for evaporating saline water to obtain water vapor, an adsorbent bed for adsorbing and desorbing the water vapor, and a condenser for condensing the water vapor to obtain distilled water. The Brayton cycle adsorption desalination system further includes a Brayton cycle system including a primary heat exchanger (PHE) and a cooler configured to cool an exhaust from the PHE. The Brayton cycle system and the adsorption desalination system are connected at the PHE so that the PHE is configured to function as a heat source for the adsorbent bed. The Brayton cycle system and the adsorption desalination system are connected at the cooler so that the evaporator is configured to absorb heat rejected from the cooler.

A process for the production of at least one of amorphous carbon or graphite, preferably of carbon black, from atmospheric air, biogas or flue gas CO2 is given, including at least the following steps: a) isolation of concentrated CO2 of a concentration of at least 50% v/v from atmospheric air, green house air or flue gas preferably by means of a cyclic adsorption/desorption process on amine-functionalized adsorbents; b) conversion of said captured CO2 into a gaseous or liquid saturated or unsaturated hydrocarbon by hydrogenation: c) cracking of said saturated or unsaturated hydrocarbon to at least one of amorphous carbon or graphite, preferably carbon black, wherein the H2 resulting from step c) is at least partially used in the hydrogenation of step b).