An anaesthetic halocarbon capture system is provided. The system includes a pressure-intolerant sleeve containing filter material for capturing one or more types of anaesthetic halocarbon prior to supercritical fluid extraction, and a pressure-tolerant housing into which the sleeve can be inserted so as to permit exposure of the sleeve contents to pressures required for supercritical fluid extraction.

Air filtration apparatuses, systems and methods for nitrous oxide and volatile organic compound (VOC) removal and non-VOC particle removal enable the removal of particulates, nitrous oxide-containing compounds, and volatile organic compounds from large volume enclosed environments. Systems incorporate HEPA filtration upstream from UV LED-assisted photo reaction chamber comprising a plurality of baffles having air flow-through airflow spaces are spaced apart along a duct, with a porous and permeable nitrous oxide-adsorbing filter oriented downstream from the UV-assisted photo reaction chamber further filtering the airflow in the system to remove nitrous oxide-containing compounds.

An air filtration system which pulls air into and through the air filtration system filter where the air is exposed to a UV lamp that provides UV light, the UV lamp surrounded by an internally polished aluminum shield or other device made of a material that reflects or enhances kill ability of micro-organisms when exposed to UV light.

Some embodiments of the present disclosure present closed-loop heating, temperature-swing adsorption regenerative scrubbing systems and methods. In some embodiments, such embodiments include providing a scrubbing system including a sorbent material, a plurality of dampers for controlling airflow over and/or through the sorbent according to an absorption mode, a closed-loop heating mode and a flushing mode, first controlling of the plurality of dampers so as to establish flowing an indoor airflow over and/or through the adsorbent during the adsorption mode, second controlling of the plurality of dampers so as to establish a closed loop airflow during the closed-loop heating mode, and third controlling of the plurality of dampers so as to establish a purging airflow during the flushing mode.

A process and an apparatus for dehumidifying a moist gas mixture are provided. The apparatus for dehumidifying a moist gas mixture can be used and in the process. The absorption medium used in the process and the apparatus is also provided.

A dehumidifier comprises a main body and a main tank. The main body has a water collector, a secondary tank, a filtering assembly, and a water pump. The water collector has an exhaust hole. The secondary tank is located under the water collector and has a receiving hole aligned to the exhaust hole. The filtering assembly has a filter located between the exhaust hole and the receiving hole, and aligned to the exhaust hole. An area of the filter is bigger than an area of the exhaust hole. The water pump has a drawing opening communicating with the secondary tank and a draining opening communicating with the main tank. Thus, the water flowing out the exhaust hole will definitely pass through the filter before flowing into the secondary tank. Therefore, the filtering assembly prevents the water pump from drawing water with dusts and impurities and being damaged.

The dehumidifier has a rotary bed 6 containing a thermally regenerable desiccant material, including a process segment 7 and a regeneration segment 8, and an air-to-air heat exchanger A having first and second heat-exchange channels A1 and A2. A process air channel 20 conducts process air through the process segment 7 of the rotary bed, through heat-exchange channel A1 of heat exchanger, to outlet 3. A cooling air channel 22 conducts cooling air from an external cooling air inlet 4a, through heat-exchange channel A2 of heat exchanger A to an exhaust air outlet 5a without passing through the rotary bed. The temperature of the return process air is controllable by a variable speed fan 12. A regeneration air channel 26 conducts air via heater box 9 through the regeneration segment 8 of the rotary bed, to exhaust air outlet 5b.

A gas compression system includes a system inlet to receive a gas stream containing a first component and a second component, a vapor system outlet to discharge the gas stream, and a plurality of compression stages coupled in series between the system inlet and the vapor system outlet. Each of the plurality of compression stages includes a compressor, a condenser coupled to the compressor, and a gravity-independent phase separator coupled to the condenser. The compressor is configured to receive the gas stream from either the system inlet or another of the plurality of compression stages and compress the gas stream. The condenser is configured to condense the second component from the gas stream. The gravity-independent phase separator is configured to remove the second component from the gas stream and discharge the gas stream to either the system outlet or another of the plurality of compression stages.

Disclosed in certain embodiments are catalyst-adsorbent compositions that include a metal oxide catalyst adapted for converting gaseous pollutants into chemically-benign species, and an adsorbent adapted for adsorbing the chemically-benign species together with other gaseous species and volatile organic compounds.

A plasma air purifying device includes a container and at least one plasma-generating element. The container includes a container body, a plurality of first partition plates and a plurality of second partition plates. The container body has an air inlet, an air outlet, and an accommodating space between the air inlet and the air outlet, and the accommodating space includes a plasma zone and a reaction zone. The first partition plates and the second partition plates are staggered in the reaction zone to separate a plurality of reaction chambers. The reaction chambers integrate spatially first through channels of the corresponding first partition plates and second through channels of the corresponding second partition plates so as to form a repetitive bending reaction channel, such that the plasma can purify the air flowing through the air inlet, the plasma zone, the repetitive bending reaction channel and the air outlet.