Process and installation for the production of ultra-pure nitrogen by
distillation of air
    2.
    发明授权
    Process and installation for the production of ultra-pure nitrogen by distillation of air 失效
    通过蒸馏蒸馏生产超纯氮的工艺和安装

    公开(公告)号:US5440885A

    公开(公告)日:1995-08-15

    申请号:US182331

    申请日:1994-01-18

    Inventor: Pascal Arriulou

    Abstract: Process and installation for the production of ultrapure nitrogen by distillation of air, wherein the air to be treated is separated in a first column (6) into nitrogen at the head and liquid at the bottom rich in oxygen. The nitrogen in the head is used to circulate in a refrigeration cycle, a flow of high pressure cycle nitrogen being purified from hydrogen in a second column (7) comprising a bottom vaporizer (11) which ensures the condensation of this nitrogen before its introduction into this second column, and a head condenser (10) cooled by the bottom liquid of the first column (6). The ultra-pure production nitrogen is withdrawn (at 24) from the bottom of the second column (7), and a second high pressure cycle nitrogen flow is condensed (in 10; 10A) by vaporization of the bottom liquid of the first column (6). At least a portion of the nitrogen condensed by vaporization of bottom liquid of the first column (6) is purified of hydrogen in the second column (7), and at least a portion of the nitrogen condensed by vaporization of bottom liquid in the first column (6) is introduced as reflux into the head of the first column (6).

    Abstract translation: 用于通过蒸馏空气生产超纯氮的方法和装置,其中待处理的空气在第一塔(6)中分离成头部的氮气和富含氧的底部的液体。 头部中的氮气用于在制冷循环中循环,在包括底部蒸发器(11)的第二塔(7)中从氢气中纯化氢气循环的氮气流,其确保在将氮气引入之前将其冷凝 该第二塔和由第一塔(6)的底部液体冷却的头部冷凝器(10)。 从第二塔(7)的底部排出超纯生产氮(在24℃),第二高压循环氮气通过第一塔底部液体的蒸发(在10; 10A)中冷凝 6)。 通过蒸发第一塔(6)的底部液体而冷凝的至少一部分氮被净化为第二塔(7)中的氢气,并且至少一部分氮气通过第一塔底部液体的蒸发而冷凝 (6)作为回流引入第一塔(6)的头部。

    Process and installation for the production of oxygen and/or nitrogen
under pressure
    3.
    发明授权
    Process and installation for the production of oxygen and/or nitrogen under pressure 失效
    在压力下生产氧气和/或氮气的过程和安装

    公开(公告)号:US5515687A

    公开(公告)日:1996-05-14

    申请号:US329321

    申请日:1994-10-26

    Inventor: Pascal Arriulou

    Abstract: In this process for the distillation of air, of the type with a liquid oxygen pump (14) and with the vaporization of liquid oxygen under pressure, there are used, in addition to a principal compressor (1), at least three further compressors (9 to 11 ), of which two (9, 10) are mounted in series and supply the heat exchange line with air at a high pressure of the vaporization of oxygen. Air is withdrawn between these two further compressors, expanded to the medium pressure and introduced at the base of the medium pressure column (5), and at least one (11) of the three further compressors consumes the mechanical energy developed by the turbine (12).

    Abstract translation: 在该蒸馏空气的方法中,使用液氧泵(14)进行蒸馏,并且在压力下蒸发液氧,除主要压缩机(1)之外还使用至少三个其它的压缩机 9〜11),其中两个(9,10)串联安装,并在氧气蒸发的高压下向空气提供热交换管线。 空气在这两个另外的压缩机之间被抽出,膨胀到中压并被引入中压塔(5)的底部,并且三个另外的压缩机中的至少一个(11)消耗由涡轮机(12)产生的机械能 )。

    Process and installation for producing nitrogen and oxygen
    4.
    发明授权
    Process and installation for producing nitrogen and oxygen 失效
    生产氮气和氧气的工艺和安装

    公开(公告)号:US5404725A

    公开(公告)日:1995-04-11

    申请号:US134545

    申请日:1993-10-12

    Inventor: Pascal Arriulou

    Abstract: A column (4) for producing nitrogen comprises, below the air introduction point, a section (17, 18) enriched in oxygen and a sump reboiler (9) supplied by recycled high pressure nitrogen. The expanded liquid (at 19) for supplying the overhead condenser (8) is withdrawn at an intermediate level between the level of air introduction and the reboiler, and the liquid in the sump of the column, after vaporization, constitutes a minority product of the installation consisting essentially of oxygen.

    Abstract translation: 用于生产氮气的塔(4)在空气引入点下面包含富氧的部分(17,18)和通过再循环的高压氮提供的贮槽再沸器(9)。 用于供应塔顶冷凝器(8)的膨胀液体(19)在空气引入和再沸器的水平之间的中间水平被抽出,并且在汽化后的塔的集水槽中的液体构成了 安装基本上由氧气组成。

    Indirect heat exchanger
    5.
    发明授权
    Indirect heat exchanger 失效
    间接换热器

    公开(公告)号:US5333683A

    公开(公告)日:1994-08-02

    申请号:US989387

    申请日:1992-12-11

    Abstract: Indirect heat exchanger, of the type comprising a series of parallel plates (7) delimiting between themselves passages (8A, 8B; 28, 42, 60) of generally plate form containing undulant spacers (9; 32, 34, 36, 37, 44, 47, 48, 53 to 56). A first assembly (8A; 28, 60) of these passages constitutes thermal exchange passages having structure (3 to 5; 39 to 41, 51) for inlet and outlet of fluids adapted to exchange heat with each other. Over at least a portion of its length and of its width, the exchanger has added passages (8B; 42), in reduced or no heat exchange relation with the thermal exchange passages (8A; 28, 60) and provided to fulfill at least one function in addition to the exchange of heat, namely a function of storing liquid and/or recirculation of liquid and/or liquid-vapor separation.

    Abstract translation: 间接热交换器,其类型包括一系列平行板(7),所述平行板(7)在其自身通道(8A,8B; 28,42,60)之间界定,所述通道具有包含起伏间隔件(9; 32,34,36,37,44 ,47,48,53至56)。 这些通道的第一组件(8A; 28,60)构成具有结构(3至5; 39至41,51)的热交换通道,用于适于彼此交换热量的流体的入口和出口。 在其长度和宽度的至少一部分上,交换器具有与热交换通道(8A; 28,60)减少或不与热交换关系的通道(8B; 42),并且被设置成满足至少一个 功能除了交换热量,即存储液体和/或液体和/或液体 - 气体分离的再循环的功能。

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