Process for Separating Off Nitrogen from Natural Gas
    1.
    发明申请
    Process for Separating Off Nitrogen from Natural Gas 审中-公开
    从天然气中分离出氮气的过程

    公开(公告)号:US20110041389A1

    公开(公告)日:2011-02-24

    申请号:US12860126

    申请日:2010-08-20

    IPC分类号: C10L1/12

    摘要: The invention relates to a process for liquefying a hydrocarbon-rich, nitrogen-containing feed fraction, preferably natural gas, wherein: a) the feed fraction (1) is liquefied (E1, E2), b) is separated by rectification (T1) into a nitrogen-enriched fraction (9), the methane content of which is a max. of 1% by volume, and a hydrocarbon-rich, nitrogen-depleted fraction (4), c) the hydrocarbon-rich, nitrogen-depleted fraction (4) is subcooled (E3) and expanded (b), d) the expanded hydrocarbon-rich, nitrogen-depleted fraction (5) is separated (D1) into a hydrocarbon-rich fraction (6), the nitrogen content of which is a max. of 1% by volume, and a nitrogen-rich fraction (7), and e) the nitrogen-rich fraction (7) is added to the feed fraction (1).

    摘要翻译: 本发明涉及一种用于液化富含烃的含氮进料馏分,优选天然气的方法,其中:a)进料馏分(1)被液化(E1,E2),b)通过精馏(T1)分离, 进入富氮馏分(9),甲烷含量最大。 1%(体积)和富含烃的贫氮馏分(4),c)富烃贫氮馏分(4)被过冷(E3)和膨胀(b),d)膨胀烃 将富含氮的馏分(5)分离(D1)成富含烃的级分(6),其氮含量为最大。 为1体积%,富氮馏分(7),以及e)将富氮馏分(7)加入到进料馏分(1)中。

    Blast tuyere for shaft furnaces, in particular blast furnaces or hot-blast cupola furnaces
    2.
    发明授权
    Blast tuyere for shaft furnaces, in particular blast furnaces or hot-blast cupola furnaces 失效
    用于竖炉的吹风口,特别是高炉或热风冲天炉

    公开(公告)号:US06446565B2

    公开(公告)日:2002-09-10

    申请号:US09915948

    申请日:2001-07-26

    IPC分类号: F23L500

    CPC分类号: F27B1/16 C21B7/16

    摘要: A blast tuyere for shaft furnaces, includes a conical hollow main body having inner and outer casings defining a hollow space and interconnected by a tuyere nose. The outer casing is formed by a single-piece base body terminating smoothly in the tuyere nose, and the inner casing is formed by a conical weld-in part. The hollow space is divided in antechamber, adjacent the tuyere nose, and main chamber, completely separated hydraulically and including separate coolant circuits. The coolant circuit for the antechamber includes two parallel passages for supply and return of coolant. The passages terminate in a ring channel, arranged in the tuyere nose in a direction transversely to the passages, and are located in an area of an upper apex of the main body radially outside the main chamber. The coolant circuit for the main chamber includes a helical cooling passageway whose inner wall is formed by the weld-in part.

    摘要翻译: 用于竖炉的鼓风风口包括一个圆锥形的中空主体,其具有限定中空空间并通过风口鼻连接的内壳和外壳。 外壳由在风口鼻部平滑地终止的单件基体形成,内壳由锥形焊接部形成。 中空空间被划分为与前风口相邻的前厅和主室,液压完全分离并且包括单独的冷却剂回路。 用于前厅的冷却剂回路包括用于供应和返回冷却剂的两个平行通道。 通道终止在环形通道中,其布置在风口鼻部中的横向于通道的方向上,并且位于主体的上顶点的位于主室的径向外侧的区域中。 用于主室的冷却剂回路包括螺旋形冷却通道,其内壁由焊接部分形成。