LIQUEFACTION PROCESS
    2.
    发明公开
    LIQUEFACTION PROCESS 失效
    液化过程

    公开(公告)号:EP0862717A1

    公开(公告)日:1998-09-09

    申请号:EP96932725.0

    申请日:1996-10-04

    IPC分类号: F25J1 F25J3

    摘要: A natural gas liquefaction process comprises passing natural gas through a series of heat exchangers (150, 151, 153) in countercurrent relationship with a gaseous refrigerant circulated through work expansion cycle. The work expansion cycle comprises compressing the refrigerant, dividing and cooling the refrigerant to produce at least first and second cooled refrigerant streams (126, 128), substantially isentropically expanding the first refrigerant stream (126) to a coolest refrigerant temperature, substantially isentropically expanding the second refrigerant stream (128) to an intermediate refrigerant temperature warmer than said coolest refrigerant temperature, and delivering the refrigerant in the first and second refrigerant streams (126, 128) to a respective heat exchanger (153, 151) for cooling the natural gas through corresponding temperature ranges. The refrigerant in the first stream (126) is isentropically expanded to a pressure at least 10 times greater than the total pressure drop of the first refrigerant stream across said series of heat exchangers (150, 151, 153), said pressure being in the range of 1.2 to 2.5 MPa.

    摘要翻译: 天然气液化方法包括使天然气通过与在工作膨胀循环中循环的气体制冷剂成逆流关系的一系列热交换器(150,151,153)。 作功膨胀循环包括压缩制冷剂,分开和冷却制冷剂以产生至少第一和第二经冷却的制冷剂流(126,128),基本等熵膨胀第一制冷剂流(126)至最冷的制冷剂温度,基本上等熵膨胀 将第二制冷剂物流(128)冷却到比所述最冷的制冷剂温度高的中间制冷剂温度,并且将第一和第二制冷剂物流(126,128)中的制冷剂输送到相应的热交换器(153,151) 相应的温度范围。 第一物流(126)中的制冷剂等熵膨胀至至少比通过所述一系列热交换器(150,151,153)的第一制冷剂物流的总压降大10倍的压力,所述压力在所述范围 为1.2至2.5MPa。

    Hydrogen liquefaction using a dense fluid expander and neon as a precoolant refrigerant
    4.
    发明公开
    Hydrogen liquefaction using a dense fluid expander and neon as a precoolant refrigerant 失效
    Wasserstoffverflüssigungmit Hilfe einer Expansionsmaschinefürdichte Fluide und Neon alsVorkühlmittel。

    公开(公告)号:EP0342250A1

    公开(公告)日:1989-11-23

    申请号:EP88107846.3

    申请日:1988-05-16

    IPC分类号: F25J1/02

    摘要: The present invention is a process for the liquefaction of hydrogen which utilizes a dense fluid expander 34 and neon as a precoolant refrigerant. In the process, a two phase mixture containing about 85-90% liquid of greater than 95% para-hydrogen is produced in a dense fluid expander. Most of the refrigeration for liquefaction is supplied by a neon refrigeration system, consisting of a centrifugal compressor 94 heat exchangers (18, 22, 26, 30) and one or more stages (76, 84) of neon expansion. As an option, further refrigeration may be supplied utilizing liquid nitrogen as another precoolant.

    摘要翻译: 本发明是用于液化氢的方法,其利用致密流体膨胀器34和氖作为预冷却剂制冷剂。 在该方法中,在致密的流体膨胀器中产生含有大约95%对氢的约85-90%液体的两相混合物。 用于液化的大部分制冷是由氖气制冷系统提供的,该制冷系统包括离心式压缩机94热交换器(18,22,26,30)和氖气膨胀的一个或多个阶段(76,84)。 作为选择,可以使用液氮作为另一预冷器来进一步制冷。

    Nitrogen generation method and apparatus
    6.
    发明公开
    Nitrogen generation method and apparatus 失效
    Verfahren und Vorrichtung zur Stickstofferzeugung

    公开(公告)号:EP0780648A2

    公开(公告)日:1997-06-25

    申请号:EP96309185.5

    申请日:1996-12-17

    IPC分类号: F25J3/04

    摘要: Compressed and purified air is separated in a distillation column 12 into a nitrogen-rich vapour and an oxygen-rich liquid. Nitrogen-rich vapour is condensed in a condenser 18 in indirect heat exchange with a stream of the oxygen-rich liquid. A part of the condensate is employed s reflux in the column 12 and another part taken as liquid nitrogen product. The condenser 10 is also cooled by a supplemental liquid nitrogen stream. Both the oxygen-rich stream and the supplemental liquid nitrogen stream are vaporised. One part of the oxygen rich vapour is compressed in a compressor 38 which drives a turboexpander 42 coupled thereto through a heat dissipative brake 46. The other part of the oxygen-rich vapour is expanded in the turboexpander 42. The vaporised supplemental nitrogen stream is rewarmed and reliquefied in a nitrogen liquefier.

    摘要翻译: 通过在塔(12)中精馏冷却的压缩纯化进料空气(10)来纯化氮气,得到富含O的塔底液体(28)和与所用的部分(22)冷凝的高纯度富氮塔顶馏出物(14) 作为塔回流,部分作为产物流(23)。 循环流被压缩,冷却并返回到塔中,制冷剂流(44)膨胀(42),其工作性能与进料空气和再循环流间接热交换,该工作用于再循环流压缩 。 第二制冷剂流(48)在冷凝塔顶蒸发,并在再液化之前与进料空气和再循环流间接热交换。 还要求一种氮气发生器。

    Verfahren zum Verflüssigen einer unter Druck stehenden kohlenwasserstoffreichen Fraktion
    7.
    发明公开
    Verfahren zum Verflüssigen einer unter Druck stehenden kohlenwasserstoffreichen Fraktion 失效
    Verfahren zumVerflüssigeneiner unter Druck stehenden kohlenwasserstoffreichen Fraktion

    公开(公告)号:EP0711967A2

    公开(公告)日:1996-05-15

    申请号:EP95117284.0

    申请日:1995-11-02

    IPC分类号: F25J1/02

    摘要: Verfahren zum Verflüssigen einer unter Druck stehenden kohlenwasserstoffreichen Fraktion, bei dem diese im Wärmetausch mit anzuwärmenden Verfahrensströmen abgekühlt und verflüssigt wird und anschließend mittels eines Entspannungsventils (b) in einen Speicherbehälter (S) entspannt wird und wobei das aus dem Speicherbehälter (S) austretende Boiloff-Gas, das gegebenenfalls einen der anzuwärmenden Verfahrensströme bildet, ein- oder mehrstufig verdichtet wird, wobei der Durchsatz des Boiloff-Gas-Verdichters (V) über die Stellung des Entspannungsventils (b) mittels eines dieses Entspannungsventil regelnden FIC-Reglers (F) konstant auf Vollast gehalten wird, wobei der Druck nach dem Entspannungsventil (b) konstant gehalten wird.

    摘要翻译: 加压富烃级分(1)通过热交换(E1,E2,E3)与待加热的工艺物流冷却和液化,并通过膨胀阀(b)膨胀成储存容器(S) 而来自储存容器的蒸发气体(7)在一个或多个阶段被压缩。 压缩机(V)的生产量始终保持在最大值。 通过流量控制器(F)调节膨胀阀的开度。 膨胀阀下游的压力保持恒定。