A removable gas separation cartridge includes a housing having an inlet port, an outlet port, and a bed of adsorbent material. The cartridge is removable from an oxygen concentrator which separates oxygen from ambient air by using an absorption process.

Some embodiments of the disclosure provide a nano-catalyst composite for decomposing formaldehyde at room temperature and a preparation method. According to an embodiment, a nano-catalyst composite includes an alumina carrier of a nano dual-via structure. An inner part and a surface of the nano-alumina dual-via structure are loaded with a non-stoichiometric nano-metal manganese dioxide (MnO.sub.2-x) catalyst. According to another embodiment, a preparation method of a nano-catalyst composite for decomposing formaldehyde at room temperature includes the following steps. (1) Loading manganese dioxide onto the nano-alumina carrier by an electron beam thermal evaporation technology. (2) Conducting hydrogenation treatment on the manganese dioxide catalyst on the nano-alumina carrier under a condition of specific hydrogen pressure, specific temperature, and a specific hydrogenation time, to obtain the non-stoichiometric nano manganese dioxide (MnO.sub.2-x) catalyst.

An air dryer cartridge, in particular for a compressed air treatment system of a commercial vehicle, includes a cartridge housing having a closed housing cover, an inner housing arranged in the cartridge housing, a desiccant accommodated in a space between the cartridge housing and the inner housing, a filter arrangement arranged inside the cartridge housing and positioned in the compressed air stream upstream of the desiccant in relation to normal operation of the air dryer cartridge, and a bypass for bypassing the filter device. A non-return valve, which blocks a compressed air stream in the direction towards the desiccant and allows a compressed air stream in the direction away from the desiccant, is arranged in the bypass. The non-return valve is formed in one piece together with the inner housing.

A dynamic air intake (A, A) for vehicle, helmet or safety clothing and the like, including a rigid casing (1, 5; 1, 5) having an air inlet opening (A1, A1), an air outlet opening (A2, A2) and a closed channel (1.4, 1.5, 3, 5; 1, 1.4, 25, 3, 5) for the passage of an air flow passing between said inlet opening (A1, A1) and said outlet opening (A2, A2), comprising air/water filter separation means including at least one layer (3, 3) of material which absorbs rainwater and/or nebulised water, water vapour, arranged along said channel (1.4. 1.5, 3, 5; 1, 1.4, 25, 3, 5), without obstructing the cross section of the same channel, in direct contact with said passing air flow and in which water and water vapour, which are transported by said passing air flow, are gradually collected and released to be dispersed towards the outside of said rigid casing.

The present invention relates to a novel integrated system for providing nitrogen (N2) to a variety of industrial service applications such as, for example, process unit drying, pipeline purging, reactor cooling, vessel inerting, pipeline displacement.

The invention discloses a method for adsorbing ethylene gas using amorphous granular starch. The method firstly prepares amorphous granular starch, wherein starch slurry is prepared from starch with a ethanol aqueous solution and NaOH solution is added dropwise so as to react at 30 to 35 C. for 20 to 50 minutes; Then the slurry is centrifuged, neutralized with an ethanol hydrochloride solution, washed and dried to obtain the amorphous granular starch. The amorphous granular starch is placed in a high-pressure reactor and ethylene gas is introduced after the reactor is vacuumized to react at 0.8 to 1.5 Mpa and 20 to 30 C. for 15 to 25 h so that starch powder product adsorbing with ethylene is obtained. The test result shows that the content of ethylene in the obtained product can reach more than 30%. The method is simple, highly efficient and cheap for the adsorption process of ethylene, and the product is expected to be widely applied in the field of fruit and vegetable modified atmosphere preservation.

Embodiments of gas concentrating systems and methods are provided. These systems and methods comprise configuration of hardware and software components to monitor various sensors associated the systems and methods of concentrating gas as described herein. These hardware and software components are further configured to utilize information obtained from sensors throughout the system to perform certain data analysis tasks. Through analysis, the system may, for example, calculate a time to failure for one or more system components, generate alarms to warn a user of pending component failure, modify system settings to improve functionality in differing environmental conditions, modify system operation to conserve energy, and/or determine optimal setting configurations based on sensor feedback.

The present disclosure provides a method for a mobile pressure swing adsorption oxygen production device, comprising a first PSA section, a second PSA section and a third PSA section which are operated in series; the first PSA section adsorbs oxygen in raw air by a velocity-selective adsorbent; the second PSA section adsorbs nitrogen etc. in desorption gas of the first PSA section by a nitrogen balance-selective adsorbent; the third PSA section removes nitrogen from oxygen-rich gas flowing out of the second PSA section; the first PSA section sequentially undergoes at least adsorption A and vacuumizing VC in one cycle; the second PSA section sequentially undergoes at least adsorption A, pressure-equalizing drop ED, backward discharge BD and pressure-equalizing rise ER; and the third PSA section sequentially undergoes at least adsorption A, pressure-equalizing drop ED, backward discharge BD and pressure-equalizing rise ER.

Disclosed is a skin care device using plasma. The skin care device may include a first plasma generating device; and a main body configured to supply power to the first plasma generating device and to control the first plasma generating device based on an input from a user.

An air treatment system for at least partially removing at least one gaseous contaminant contained in indoor air of a room structured for human occupants. The system may comprise an air treatment assembly having an indoor air inlet configured to receive indoor airflow directly from a room, a regenerable adsorbent material configured to adsorb at least one gaseous contaminant contained in the indoor airflow, at least one airflow element for directing the indoor airflow to flow through the air treatment assembly, an indoor air outlet for expelling the indoor air, from the air treatment assembly back into the room, a purge air inlet configured to receive and direct purge air over and/or through the adsorbent material for removal of at least a portion of the at least one gaseous contaminant, and a purge air outlet for expelling the purge air out of the air treatment assembly.