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    Air separation
    3.
    发明公开
    Air separation 失效
    空气分离

    公开(公告)号：EP0260002A2

    公开(公告)日：1988-03-16

    申请号：EP87307388.6

    申请日：1987-08-21

    申请人： The BOC Group plc

    发明人： Gladman, David Charles Fletcher ,  Oakey, John Douglas

    IPC分类号： F25J3/04

    CPC分类号： F25J3/0429 ,  F25J3/04193 ,  F25J3/04303 ,  F25J3/04393 ,  F25J3/04412 ,  F25J3/04678 ,  F25J3/0469 ,  F25J2200/52 ,  F25J2200/54 ,  F25J2245/40 ,  F25J2290/10 ,  Y10S62/924

    摘要： Air is fractionated in a double distillation column 4 comprising lower pressure and higher pressure columns 8 and 6 respectively. Condenser-reboiler 42 provides reboiled oxygen to the bottom of the column 8. Liquid nitrogen reflux is introduced into the top of the column 8 through an inlet 50. Oxygen, nitrogen and argon-enriched streams are withdrawn from the column 8 through outlets 52, 54 and 58 respectively. The argon-enriched stream is separated in a further distillation column 40 and a product argon stream is withdrawn through outlet 62. A liquid stream is withdrawn through outlet 70 from an intermediate level of the column 8 is at least partially reboiled in heat exchanger 72, and is returned to the column 8 through inlet 74 at a level where the composition of the vapour corresponds approximately to that of the reboiled liquid. Heating for the heat exchanger 72 is provided by a vapour stream withdrawn through outlet 76 from the column 40, which vapour stream condenses and is returned to the column 40 through inlet 75. The aforesaid reboiling of the stream from the intermediate level of the column 8 makes possible more efficient air separation.

    摘要翻译： 空气分别在包括低压塔8和高压塔6的双蒸馏塔4中分馏。 冷凝器 - 再沸器42向塔8的底部提供再沸的氧气。液氮回流通过入口50引入塔8的顶部。氧气，氮气和富氩流通过出口52从塔8中排出， 分别为54和58。 富氩流在另外的蒸馏塔40中分离，产物氩流通过出口62排出。液体流通过出口70从塔8的中间高度在热交换器72中至少部分再沸腾， 并通过入口74返回到塔8，其中蒸气的组成大致对应于再沸腾液体的组成。 热交换器72的加热由通过出口76从塔40抽出的蒸气流提供，该蒸气流冷凝并通过入口75返回到塔40.上述从塔8的中间水平重新沸腾物流 使空气分离更有效。

    NACHRÜSTBARE VORRICHTUNG ZUR TIEFTEMPERATURZERLEGUNG VON LUFT, NACHRÜSTANLAGE UND VERFAHREN ZUM NACHRÜSTEN EINER TIEFTEMPERATUR-LUFTZERLEGUNGSANLAGE
    4.
    发明公开
    NACHRÜSTBARE VORRICHTUNG ZUR TIEFTEMPERATURZERLEGUNG VON LUFT, NACHRÜSTANLAGE UND VERFAHREN ZUM NACHRÜSTEN EINER TIEFTEMPERATUR-LUFTZERLEGUNGSANLAGE 有权
    改型翻新装置低温空分，翻新的系统和方法用于改进低温空气分离系统

    公开(公告)号：EP2986924A1

    公开(公告)日：2016-02-24

    申请号：EP14715547.7

    申请日：2014-04-03

    申请人： Linde Aktiengesellschaft

    发明人： LAUTENSCHLAGER, Tobias

    IPC分类号： F25J3/04

    CPC分类号： F25J3/04678 ,  F25J3/0409 ,  F25J3/04412 ,  F25J3/0469 ,  F25J3/04703 ,  F25J3/04727 ,  F25J3/04878 ,  F25J3/0489 ,  F25J3/04969 ,  F25J2245/58

    摘要： The retrofittable device for low-temperature separation of air comprises a distillation column system, which has a high-pressure column (3), a low-pressure column (4), and a first raw argon column (6). Said device comprises supply lines (101, 102) for connecting the first raw argon column (6) to a second raw argon column (41), wherein the supply lines pass through the outer wall of the first cold box (1), which encloses the high-pressure column (3), the low-pressure column (4), and the first raw argon column (6). The invention further relates to a retrofitting system, which comprises a second cold box (40), a second raw argon column (41), and corresponding supply lines (201 to 205), and to a method for retrofitting the device mentioned first.

    摘要翻译： 用于空气的低温分离的改装设备包括蒸馏塔系统，该系统具有高压塔（3），一个低压塔（4），和一个第一粗氩塔（6）。 所述装置包括电源线（101，102），用于在第一粗氩塔（6）连接到第二粗氩塔（41），worin供给线穿过所述第一冷箱的外壁（1），其包围 高压塔（3）中，低压塔（4），并且所述第一粗氩塔（6）。 本发明还涉及到一个改型的系统，它包括一个第二冷箱（40），第二粗氩塔（41），和相应的供应线（201〜205），以及用于改装第一提及的装置的方法。

    Enhanced recovery of argon from cryogenic air separation cycles
    6.
    发明公开
    Enhanced recovery of argon from cryogenic air separation cycles 无效
    ErhöhteArgongewinnung mittels kryogener Lufttrennungszyklen。

    公开(公告)号：EP0473078A1

    公开(公告)日：1992-03-04

    申请号：EP91114178.6

    申请日：1991-08-23

    申请人： AIR PRODUCTS AND CHEMICALS, INC.

    发明人： Agrawal, Rakesh ,  Woodward, Donald Winston

    IPC分类号： F25J3/02 ,  F25J3/04

    CPC分类号： F25J3/04672 ,  F25J3/04303 ,  F25J3/04412 ,  F25J3/0469 ,  F25J2200/54 ,  F25J2200/90 ,  F25J2205/02 ,  F25J2235/58 ,  F25J2290/10 ,  Y10S62/924 ,  Y10S62/939

    摘要： The present invention relates to an improvement for the production of argon from cryogenic air separation processes. In particular, the improvement provides a better method of thermally linking the top of the crude argon column (135) with the low pressure column (119). In the improvement, the argon-rich, overhead vapor (245) from the top of the crude argon column (247) is condensed in a boiler/condenser by indirect heat exchange against liquid descending the low pressure column; a portion (250) of the condensed argon-rich, overhead vapor is returned to the top of the crude argon column to provide reflux. The most suitable location for such boiler/condenser is as an intermediate boiler/condenser in the low pressure column, particularly, the section of the low pressure column bounded by the feed point of the crude liquid oxygen from the bottom of the high pressure column and the vapor feed draw line for the crude argon column wherein an adequate temperature difference exists between the descending liquid and the condensing argon.

    摘要翻译： 本发明涉及从低温空气分离方法生产氩气的改进。 特别地，改进提供了将粗氩塔（135）的顶部与低压塔（119）热连接的更好的方法。 在改进中，来自粗氩塔（247）顶部的富氩塔顶蒸气（245）通过与降低低压塔的液体的间接热交换在锅炉/冷凝器中冷凝; 将冷凝的富氩塔顶蒸气的一部分（250）返回到粗氩塔的顶部以提供回流。 这种锅炉/冷凝器的最适合的位置是作为低压塔中的中间锅炉/冷凝器，特别是由低压塔的底部的粗液氧的供给点限定的低压塔段，以及 用于粗氩塔的蒸气进料抽出管线，其中在下降液体和冷凝氩气之间存在足够的温度差。

    METHOD AND APPARATUS FOR SEPARATING ARGON
    10.
    发明公开
    METHOD AND APPARATUS FOR SEPARATING ARGON 失效
    方法和装置分离氩

    公开(公告)号：EP0786633A4

    公开(公告)日：1998-12-09

    申请号：EP96918840

    申请日：1996-06-19

    申请人： NIPPON OXYGEN CO LTD

    发明人： NOJIMA TOSHIYUKI ,  KURA TOMIO ,  HONDA HIDEYUKI

    IPC分类号： F25J3/04

    CPC分类号： F25J3/04703 ,  F25J3/04412 ,  F25J3/04672 ,  F25J3/04678 ,  F25J3/0469 ,  F25J3/04727 ,  F25J2200/90 ,  F25J2230/58 ,  F25J2235/58 ,  F25J2250/02 ,  F25J2250/04 ,  Y10S62/924

    摘要： A dry condenser which permits heat exchange even in a small temperature difference is used in each condenser for a crude argon column, a deoxidation column, and a high-purity argon column in an argon separator utilizing air liquefaction and rectification. An oxygen-enriched liquefied air withdrawn from the plate located above the bottom of a lower column in a multi-rectifying column is used as a coolant for each condenser. Thus it is possible to widen the temperature difference between the condensation side and the evaporation side in the condensers for respective columns, to dispense with a blower for pressurizing crude argon even when the total number of theoretical plates of the crude argon column and the deoxidation column exceeds 100 and, consequently, to reduce apparatus and operation costs. Further, it is possible to render the condenser in each column small and compact, thus shortening the time taken for starting. Furthermore, the adoption of the liquefied air withdrawn from plates located above the bottom can eliminate a fear of hydrocarbon precipitation.