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    SUPERIOR CARBON ADSORBENTS
    2.
    发明申请
    SUPERIOR CARBON ADSORBENTS 审中-公开

    公开(公告)号：US20200368724A1

    公开(公告)日：2020-11-26

    申请号：US16966292

    申请日：2019-02-14

    申请人： PRAXAIR TECHNOLOGY, INC.

    发明人： Neil A. Stephenson ,  Philip A. Barrett ,  Steven J. Pontonio ,  Nicholas R. Stuckert ,  Garrett R. Swindlehurst

    IPC分类号： B01J20/28 ,  B01D53/047 ,  B01J20/20 ,  B01J20/32 ,  B01J20/30

    摘要： The present invention relates to a superior carbon adsorbent with or without a core. In one embodiment the carbon adsorbent of the present invention employs carbon adsorbent powder and an organic binding agent which are combined together with an appropriate solvent in an agglomeration step. In another embodiment the invention contemplates a core-in-shell adsorbent comprising an outer shell composed of a carbon and a non-adsorbing inert inner core. Low temperature processing of these agglomerates substantially preserves the binding agent within the final composition and allows one to prepare adsorbent products of high sphericity. The adsorbents of the invention possess superior characteristics such as higher mass transfer rate and CO2 working capacity for use in a H2PSA process.

    LARGE CRYSTAL TUNABLE ADSORBENTS
    6.
    发明申请
    LARGE CRYSTAL TUNABLE ADSORBENTS 有权

    公开(公告)号：US20210252482A1

    公开(公告)日：2021-08-19

    申请号：US16973107

    申请日：2019-07-01

    申请人： PRAXAIR TECHNOLOGY, INC.

    发明人： Steven J. Pontonio ,  Philip A. Barrett ,  Neil A. Stephenson ,  Katie Held

    IPC分类号： B01J20/32 ,  B01J20/28 ,  B01J20/18 ,  B01D53/04

    摘要： The present invention relates to a surface modified zeolite adsorbent wherein the surface of said zeolite is modified with a coating comprised of a silicone derived species, said zeolite having a mean crystal size from about 5 to about 10 μm and a skeletal density of ≥1.10 gr./cc. The invention is based on the discovery that larger crystals tend to have higher particle density, and the packing of the larger crystals in agglomeration processes leads to more idealized packing to provide a larger mean-pore diameter. The surface modified adsorbent provides rate selectivity for one gas over others is described. The superior adsorbent has the added convenience of bead forming simultaneously with pore modification as well as having the treatment result in the yielding of high crush strength products.