Removal of dinitrogen difluoride from nitrogen trifluoride
    6.
    发明授权
    Removal of dinitrogen difluoride from nitrogen trifluoride 失效
    从三氟化氮中去除二氟化氮

    公开(公告)号:US4193976A

    公开(公告)日:1980-03-18

    申请号:US894114

    申请日:1978-04-06

    IPC分类号: C01B21/083 C01B21/52

    CPC分类号: C01B21/0832

    摘要: This invention relates to a process for purifying a nitrogen trifluoride containing atmosphere contaminated with dinitrogen difluoride. The atmosphere is purified by heating the nitrogen trifluoride atmosphere in the presence of a particulate metal capable of defluorinating dinitrogen difluoride, but inert to nitrogen trifluoride, preferably the metal being selected from the group consisting of iron, cobalt, and nickel, to a temperature of from about 300.degree.-1000.degree. F. for a time sufficient to effect defluorination of the dinitrogen difluoride.

    摘要翻译: 本发明涉及一种净化含有二氟化氮的三氟化氮气氛的方法。 在能够对二氟化二氟化物进行氟化的颗粒状金属的存在下,通过加热三氟化氮气氛,但对三氟化氮,优选选自铁,钴和镍的金属,优选为铁,钴和镍的金属, 约300°-1000°F,足以使二氟化二氮脱氟。

    Method and apparatus for perforating or cutting with a solid fueled gas
mixture
    9.
    发明授权
    Method and apparatus for perforating or cutting with a solid fueled gas mixture 失效
    用固体燃料气体混合物穿孔或切割的方法和装置

    公开(公告)号:US4446920A

    公开(公告)日:1984-05-08

    申请号:US457815

    申请日:1983-01-13

    IPC分类号: E21B29/02 E21B43/114

    摘要: A method for cutting pipe casings and concrete liners or perforating the same and localized portions of surrounding strata in an earth bore is set forth wherein a gas phase cutting or perforating jet mixture of fluorine and nitrogen trifluoride is delivered to the cutting or perforation site from the decomposition of a solid, normally stable, perfluoroammonium salt. An appropriate apparatus for delivering the gas mixture of fluorine and nitrogen trifluoride from the salt is also disclosed.

    摘要翻译: 阐述了一种用于切割管壳和混凝土衬垫或对其进行穿孔及其周围地层的局部部分的方法,其中将氟和三氟化氮的气相切割或射孔喷射混合物从所述切割或穿孔部位输送到 分解固体,通常稳定的全氟铵盐。 还公开了用于从盐中输送氟和三氟化氮的气体混合物的适当装置。