CORNER STRUCTURE OF LIQUEFIED GAS STORAGE TANK

    公开(公告)号:US20220390069A1

    公开(公告)日:2022-12-08

    申请号:US17783646

    申请日:2020-09-02

    IPC分类号: F17C3/02 B63B25/12

    摘要: Disclosed is a corner structure of a liquefied gas storage tank, wherein the corner structure is installed at a corner of the storage tank for storing liquefied gas to support sealing walls. The corner structure includes: a stationary member secured to an inner surface of a hull structure wall; a movable member disposed on the stationary member such that the sealing walls are joined thereto; and an insulating member interposed between the sealing walls and the hull structure wall. The stationary member includes a stationary member body bent at a curved portion thereof in an opposite direction to the movable member, and the movable member includes a movable member body bent at a bent portion thereof in an opposite direction to the stationary member. The stationary member and the movable member are coupled to each other by a fastening member that penetrates the curved portion and the bent portion.

    Method for calculating tortuous hydraulic diameter of porous medium and method for analyzing flow in porous medium using same

    公开(公告)号:US11193873B2

    公开(公告)日:2021-12-07

    申请号:US16336920

    申请日:2017-09-29

    发明人: Chang Hoon Shin

    IPC分类号: G01N15/08

    摘要: Provided is a method of calculating a tortuous hydraulic diameter of a porous medium for laminar flow and turbulent flow considering a geometric feature and a friction loss feature. A method of calculating a tortuous hydraulic diameter of a porous medium, according to an embodiment of the present invention, includes providing porosity and a specific surface area of a porous medium, calculating a hydraulic diameter of the porous medium by using the porosity and the specific surface area, calculating tortuosity of the porous medium, and calculating a tortuous hydraulic diameter corresponding to a function of tortuosity, by using the hydraulic diameter and the tortuosity of the porous medium.

    PREPARING PHOSPHORUS CONTAINING ALUMINA SUPPORT BY SOL-GEL METHOD FOR FISCHER-TROPSCH SYNTHESIS AND CATALYST PREPARATION THEREOF
    9.
    发明申请
    PREPARING PHOSPHORUS CONTAINING ALUMINA SUPPORT BY SOL-GEL METHOD FOR FISCHER-TROPSCH SYNTHESIS AND CATALYST PREPARATION THEREOF 有权
    通过溶胶凝胶法制备含有氧化铝的磷化合物,用于FISCHER-TROPSCH合成及其催化剂的制备

    公开(公告)号:US20140057780A1

    公开(公告)日:2014-02-27

    申请号:US14069446

    申请日:2013-11-01

    IPC分类号: B01J27/185

    摘要: The present invention relates to a process of preparing of a phosphorus-containing phosphorus-alumina support by a sol-gel method and a cobalt/phosphorus-alumina catalyst where cobalt is supported onto the phosphorus-alumina support as an active ingredient. The phosphorus-alumina support is prepared by a sol-gel method and has wide specific surface area with bimodal pore size distribution and high cobalt dispersion, thereby enabling to increase heat and mass transfer, stabilize the structure by modifying the surface property of alumina and decrease the deactivation rate due to the reduced oxidation of cobalt component during the F-T reaction. When Fischer-Tropsch reaction (F-T) is conducted on the catalyst, the catalyst maintains a superior thermal stability, inhibits the deactivation due to water generation during the F-T reaction and also causes relatively high conversion of carbon monoxide and stable selectivity of liquid hydrocarbons.

    摘要翻译: 本发明涉及一种通过溶胶 - 凝胶法制备含磷磷 - 氧化铝载体的方法和一种钴/磷 - 氧化铝催化剂,其中钴作为活性成分负载在磷 - 氧化铝载体上。 磷 - 氧化铝载体通过溶胶 - 凝胶法制备,具有宽的比表面积,具有双峰孔径分布和高钴分散性,从而能够增加热和质量传递,通过改变氧化铝的表面性能来稳定结构,并减少 由于在FT反应期间钴组分的氧化降低导致的失活速率。 当在催化剂上进行费 - 托反应(F-T)时,催化剂保持优异的热稳定性,抑制在F-T反应期间由于水的产生而失活,并且还导致一氧化碳相对较高的转化率和液体烃的稳定选择性。