Closed-Circuit Combined Unit Respirator System

    公开(公告)号:US20240066329A1

    公开(公告)日:2024-02-29

    申请号:US18268298

    申请日:2021-12-20

    摘要: A method and system for closed-circuit combined unit respiration, is disclosed. More specifically, an enriched air, multi-use closed-circuit self-contained breathing apparatus for on-demand transition between a powered air purifying respirator (PAPR) mode and a closed-circuit rebreather mode, is disclosed. The system may comprise a carbon dioxide scrubbing canister configured to receive an exhaled gas and scrub carbon dioxide from the exhaled gas when in a closed-circuit mode. A breathing bag may receive the scrubbed gas when in the closed-circuit mode. The scrubbed gas may be infused with oxygen, resulting in an enriched gas when in the closed-circuit mode. A cooler comprising a plurality of heatsink fins may cool the enriched gas and a breathing hose may transmit the enriched gas for inhalation when in the closed-circuit mode. The system may further comprise a PAPR to intake and filter external air for inhalation when in the PAPR mode.

    SYSTEM AND METHOD OF CO2 THERMAL SWING ADSORPTION WITH WET REGENERATION AND HOT DRYING

    公开(公告)号:US20240058741A1

    公开(公告)日:2024-02-22

    申请号:US18361203

    申请日:2023-07-28

    发明人: Paul M. DUNN

    IPC分类号: B01D53/04 B01D53/14 B01D53/26

    摘要: A capture vessel is provided that is configured to capture carbon dioxide (CO2) according to a thermal swing adsorption (TSA) process. The capture vessel includes capture media that are configured to adsorb CO2 from an exhaust gas during a CO2 capture stage to produce a first N2 gas that exits the capture vessel, receive a mixed stream of CO2 and water vapor during a wet regeneration stage, adsorb water from the mixed stream of CO2 and water vapor and release adsorbed CO2 during the wet regeneration stage to produce a CO2 stream, receive a first heated N2 gas and release adsorbed water due to evaporation caused by the first heated N2 gas during a drying stage, and receive a cooled gas during a cooling stage such that an absorption capacity of the capture media for CO2 capture is increased for a next CO2 capture stage.

    Odor filtering lid assembly
    59.
    发明授权

    公开(公告)号:US11883773B2

    公开(公告)日:2024-01-30

    申请号:US17676294

    申请日:2022-02-21

    申请人: Oscar Galan

    发明人: Oscar Galan

    摘要: An odor filtering lid assembly includes a lid that is positionable on a cooking pot and that has female threads which are integrated into a perimeter of the lid. A first disk has a plurality of first air holes each extending through the first disk to pass air through the first disk. The first disk has male threads integrated into the first disk which threadably engaging the female threads in the lid for removably attaching the first disk to the lid. An air filter is positioned against the first disk to filter odors from air passing through the air filter. A second disk has a plurality of second air holes each extending through the second disk to pass air through the second disk. The second disk is positionable against the first disk such that the air filter is positioned between the first disk and the second disk.

    Product for metal adsorption
    60.
    发明授权

    公开(公告)号:US11883772B2

    公开(公告)日:2024-01-30

    申请号:US17396016

    申请日:2021-08-06

    发明人: Bo Wang Dennis Parker

    IPC分类号: B01D53/04 C09D183/08

    摘要: A product for adsorbing one or more heavy metals from a liquid is disclosed. The product may comprise attapulgite that has been surface functionalized with a surface coating agent that includes one or more mercury affinity functional groups that chemically bond to the attapulgite surface, wherein the weight percentage of components of the product includes: 91-99 wt. % attapulgite and 1-9 wt. % surface coating agent that includes the one or more mercury affinity functional groups. The product has a surface area in the range of 115-145 m2/g as measured using the BET method. The heavy metal includes mercury and/or lead. Also disclosed is a method of producing the product and a method of adsorbing at least one heavy metal in a liquid using the product.