This disclosure relates to techniques for producing liquid water from ambient air. In certain embodiments, a system includes a regeneration fluid pathway configured to receive a regeneration fluid and a thermal unit configured to heat the regeneration fluid. The system can further include a continuous desiccant unit that comprises an adsorption zone and a desorption zone, as well as a batch desiccant unit that includes a regeneration inlet and a batch desiccant housing. The batch desiccant housing can include a batch desiccant inlet configured to input the ambient air, a batch desiccant outlet configured to output a batch output fluid, and a batch desiccant material. A condenser unit can be configured to produce liquid water from the regeneration fluid, and the system can maximize a water production rate of the condenser unit based on an amount of heat carried by the regeneration fluid.

Disclosed are embodiments of a filter unit containing a water adsorbent material in the form of water adsorbent particles in a packed bed and a gas adsorbent material in the form of gas adsorbent particles in a packed bed. In embodiments, the gas adsorbent material is downstream from the water adsorbent material in a direction of operation. Further disclosed are methods of preparing and using the filter units.

A dryer for compressed gas includes a pressure vessel containing a drying zone and a regeneration zone, a drum within the rotation symmetrical part, equipped with a regenerable drying agent; driving means for rotating the aforementioned drum so that the drying agent is successively moved through the drying zone and the regeneration zone, an inlet for the supply of the compressed air to be dried to the drying zone, an outlet for the removal of the dried compressed gas, and a first connection line for branching off of a partial stream of the dried compressed gas and transfer of this partial stream to the regeneration zone. The drying zone is on outlet side is subdivided using a divider into a first outlet zone with which the outlet is connected for the dried compressed gas, and a second outlet zone with which the first connection line is connected.

A dryer for compressed gas, including a pressure vessel containing a drying zone and a regeneration zone, a drum within the rotation symmetrical part, equipped with a regenerable drying agent; propulsion unit for rotating the aforementioned drum so that the drying agent is successively conducted through the drying zone and the regeneration zone, an inlet for the supply of the compressed air to be dried to the drying zone, an outlet for the removal of the dried compressed gas, and a first connection line for branching off of a partial stream of the dried compressed gas and transfer of this partial stream to the regeneration zone. The first connection line is equipped with a heating unit for the heating of the partial stream branched off for the regeneration. The first connection line and the heating unit are located within the pressure vessel.

A rotary sorption bed system includes a rotating sorbent mass of a regenerable sorbent material, in a cycle of operation, a given volume of the sorbent mass sequentially passing through first, second, third, fourth, and fifth zones, before returning to the first zone; a process fluid stream directed through the first zone; a regeneration fluid stream directed through the third zone; and an isolation fluid stream that recirculates in a closed loop independent of the process fluid stream and the regeneration fluid stream through the second and fourth zones. The regeneration fluid stream passes through the fifth zone before passing through the third zone.

A contaminant scrubber of a heating, ventilation, and air conditioning (HVAC) system includes a sorption cavity, a sorption inlet damper configured to receive return air from a conditioned space and into the sorption cavity, and a sorption outlet damper configured to output the return air from the sorption cavity and toward the conditioned space. The contaminant scrubber also includes an outer housing about the sorption cavity, the outer housing having a mount-facing side wall along which the sorption inlet damper and the sorption outlet damper are disposed.

A dehumidification rotor 1, a desiccant air conditioner 2, a first post-regeneration exhaust pipeline 3 supplying post-regeneration exhaust from a regeneration zone 1b of the dehumidification rotor, a purge air supply pipeline 4 supplying purge air from the desiccant air conditioner to a purge zone of the dehumidification rotor, and a regeneration air supply pipeline 7 supplying regeneration air from the purge zone to the regeneration zone are provided. The desiccant air conditioner comprises a second post-regeneration exhaust pipeline 5 and an outdoor air intake pipeline 6. An indoor air intake pipeline supplying air of a dry room 9 to an absorption zone 1a of the dehumidification rotor 10, a first dry air supply pipeline 11 supplying dry air from the absorption zone to the dry room, and a second dry air supply pipeline 14 supplying dry air from the desiccant air conditioner to the indoor air intake pipeline are provided.

Systems and methods for an atmospheric carbon dioxide removal system that includes a plurality of carbon capture containers, a plurality of fans, an air diverter, and a velocity stack. Each of the carbon capture containers has an outwardly facing side and an inwardly facing side with the inwardly facing side facing an enclosed space. The fans are disposed adjacent to the carbon capture containers. The fans are arranged to move air through the carbon capture containers in a first direction from the outwardly facing side into the enclosed space. The air diverter is disposed within the enclosed space and receives the air flowing in the first direction and redirects the air to flow in a second direction that is angled upwardly from the first direction. The velocity stack is disposed on top of the enclosed space and is configured to accelerate the flow of the air in the second direction.

A filter for a sorbent regeneration process includes a base, a central rod, support frames, and a filter screen. The central rod is coupled to the base and defines a longitudinal axis of the filter. Each of the support frames are coupled to and protrude radially from the central rod. Each of the support frames are coupled to the base. For each pair of neighboring support frames, the filter includes a triangular support member disposed between the pair of neighboring support frames. Each triangular member is coupled to the central rod and to each of the neighboring support frames. The filter screen surrounds the support frames and is coupled to the support frames and to the base.

A system and method for sulfur recovery, including hydrogenating Claus tail gas, quenching the hydrogenated gas, adsorbing water and hydrogen sulfide from the quenched gas, and regenerating adsorbent with carbon dioxide and/or nitrogen and heating the adsorbent in a regeneration temperature ramp to desorb primarily hydrogen sulfide in a first part of the temperature ramp.