PROCESS FOR LIQUEFYING A NATURAL GAS WITH REFRIGERANT MIXTURES CONTAINING AT LEAST ONE UNSATURATED HYDROCARBON
    3.
    发明申请
    PROCESS FOR LIQUEFYING A NATURAL GAS WITH REFRIGERANT MIXTURES CONTAINING AT LEAST ONE UNSATURATED HYDROCARBON 审中-公开
    利用含有至少一个不饱和烃的制冷剂混合物来调节天然气的方法

    公开(公告)号:WO2011114012A3

    公开(公告)日:2015-06-04

    申请号:PCT/FR2011000111

    申请日:2011-02-25

    IPC分类号: F25J1/02

    摘要: The invention relates to a process for liquefying natural gas, in which the natural gas is cooled, condensed and subcooled by indirect heat exchange with two refrigerant mixtures circulating in the circuits (I) and (II). A first refrigerant mixture is compressed, cooled and at least partially condensed by heat exchange in C1 with an external fluid. The first refrigerant mixture is then subcooled by heat exchange in C2 before being partially or completely expanded so as to cool the natural gas and a second refrigerant mixture by heat exchange. The second refrigerant mixture is compressed, cooled and at least partially condensed by heat exchange in C3 with an external fluid before being cooled in the first circuit (I) by heat exchange with the first refrigerant mixture so as to be subsequently expanded and to allow the natural gas to be cooled, by heat exchange, until it is liquefied. The first and second refrigerant mixtures comprise at least ethylene.

    摘要翻译: 本发明涉及一种液化天然气的方法,其中天然气通过与在电路(I)和(II)中循环的两种制冷剂混合物进行间接热交换而被冷却,冷却和过冷。 第一制冷剂混合物被压缩,冷却并且通过C1中的外部流体的热交换而至少部分地冷凝。 然后在部分或完全膨胀之前,通过在C2中的热交换将第一制冷剂混合物过冷,以便通过热交换来冷却天然气和第二制冷剂混合物。 在第一制冷剂混合物中通过与第一制冷剂混合物的热交换在第一回路(I)中冷却之前,将第二制冷剂混合物压缩,冷却并至少部分地在C3中与外部流体进行热交换冷凝,从而随后膨胀 天然气被冷却,通过热交换,直到液化。 第一和第二制冷剂混合物至少包含乙烯。

    APPARATUS AND METHOD FOR COOLING AND LIQUEFYING A FLUID
    4.
    发明申请
    APPARATUS AND METHOD FOR COOLING AND LIQUEFYING A FLUID 审中-公开
    用于冷却和液化流体的装置和方法

    公开(公告)号:WO2011051226A3

    公开(公告)日:2014-05-15

    申请号:PCT/EP2010066065

    申请日:2010-10-25

    摘要: A fluid is cooled and liquefied in an apparatus with a heat exchanger (5) having a shell side (78) within its walls (85) and a plurality of flow passages extending through the shell side (78). The plurality of flow passages comprises two or more primary groups (40a, 40b) of one or more primary flow passages, each said primary group for carrying a part of the fluid stream through the heat exchanger (5) and to indirectly cool said part against a refrigerant in the shell side (78) of the heat exchanger (5) to provide a liquefied fluid stream (50, 70). A primary inlet header (6,6') connects the two or more primary groups (40a, 40b) of primary flow passages to a source of the fluid (10), and arranged to split the fluid stream between the two or more primary groups (40a, 40b) of primary flow passages. Means (25a, 25b) are provided for selectively blocking at least one of the two or more primary groups (40a, 40b) of primary flow passages whilst allowing the fluid stream to flow through the remaining unblocked primary groups of primary flow passages.

    摘要翻译: 流体在具有在其壁(85)内具有壳侧(78)的热交换器(5)的装置中冷却和液化,以及延伸穿过壳侧(78)的多个流动通道。 多个流动通道包括一个或多个主要流动通道的两个或更多个初级组(40a,40b),每个所述主要组用于承载通过热交换器(5)的一部分流体流,并间接地冷却所述部件以抵抗 在热交换器(5)的壳侧(78)中的制冷剂,以提供液化流体流(50,70)。 主入口集管(6,6')将主要流动通道的两个或更多个主组(40a,40b)连接到流体源(10),并且布置成在两个或多个主要组之间分离流体流 (40a,40b)的主流路。 提供装置(25a,25b)用于选择性地阻塞主要流动通道的两个或更多个初级基团(40a,40b)中的至少一个,同时允许流体流量流过剩余的未阻塞的初级流动通道的主要组。

    METHOD AND APPARATUS FOR COOLING A HYDROCARBON STREAM
    7.
    发明申请
    METHOD AND APPARATUS FOR COOLING A HYDROCARBON STREAM 审中-公开
    用于冷却油气流的方法和装置

    公开(公告)号:WO2012057626A8

    公开(公告)日:2012-12-20

    申请号:PCT/NL2011050736

    申请日:2011-10-31

    发明人: ZUURHOUT LOUIS

    IPC分类号: F25J1/02 F25J1/00

    摘要: A hydrocarbon stream (3) is cooled by passing the hydrocarbon stream through at least one heat exchanger (1, 2) by a method, which comprises the steps of: (a) compressing a refrigerant (32, 15) in a compressor unit to yield compressed refrigerant (30,10); (b) expanding (46, 13) the compressed refrigerant (47, 14), to yield cold refrigerant; (c) passing the hydrocarbon stream (3) against the cold refrigerant in the heat exchanger (1, 2) designed for a maximum inlet flow of the refrigerant, to yield a cooled hydrocarbon stream (4, 7) and at least partly evaporated refrigerant; (d) recovering the cold hydrocarbon stream (8, 9); and (e) recycling (32, 15) at least part of the at least partly evaporated refrigerant to the compressor unit, wherein the compressor unit comprises at least two compressors (36, 38, 40, 17, 21, 23) that all operate simultaneously in parallel and wherein the compressor unit has a design capacity in excess of the maximum inlet flow of refrigerant to the heat exchanger. The invention also provides an apparatus for this method.

    摘要翻译: 通过使烃流通过至少一个热交换器(1,2)的方法来冷却烃流(3),该方法包括以下步骤:(a)将压缩机单元中的制冷剂(32,15)压缩到 产生压缩制冷剂(30,10); (b)使压缩的制冷剂(47,14)膨胀(46,13),以产生冷的制冷剂; (c)使烃流(3)抵靠设计用于制冷剂最大入口流量的热交换器(1,2)中的冷制冷剂,以产生冷却的烃流(4,7)和至少部分蒸发的制冷剂 ; (d)回收冷烃流(8,9); 和(e)将所述至少部分蒸发的制冷剂的至少一部分再循环(32,15)到所述压缩机单元,其中所述压缩机单元包括至少两个全部操作的压缩机(36,38,40,17,21,23) 同时并联,并且其中压缩机单元的设计能力超过制冷剂到热交换器的最大入口流量。 本发明还提供了一种用于该方法的装置。

    METHOD AND APPARATUS FOR PRODUCING A COOLED HYDROCARBON STREAM
    10.
    发明申请
    METHOD AND APPARATUS FOR PRODUCING A COOLED HYDROCARBON STREAM 审中-公开
    生产冷却的烃流的方法和设备

    公开(公告)号:WO2011000900A3

    公开(公告)日:2011-04-14

    申请号:PCT/EP2010059341

    申请日:2010-07-01

    IPC分类号: F25J1/02 G05B13/04 G05B15/02

    摘要: Method and apparatus for producing a cooled hydrocarbon stream (60). The method employs cooling, at at least two consecutive pressure levels, a first stream and a first mixed refrigerant stream, using portions of the first mixed refrigerant from the first mixed refrigerant stream in first and second heat exchangers (125, 145); first and second expansion devices (135, 165); and a first compressor (105) to provide the first mixed refrigerant stream. The cooling process is controlled using an advanced process controller based on model predictive control to determine simultaneously control actions for a set of manipulated variables in order to optimise at least one of a set of parameters whilst controlling at least one of a set of controlled variables. The set of manipulated variables comprises: the composition of the mixed first refrigerant, the setting of the first expansion device (135), and the setting of the second expansion device (165).

    摘要翻译: 生产冷却的烃物流(60)的方法和设备。 该方法采用在第一和第二换热器(125,145)中使用来自第一混合制冷剂流的第一混合制冷剂的一部分在至少两个连续压力水平下冷却第一流和第一混合制冷剂流; 第一和第二膨胀装置(135,165); 和提供第一混合制冷剂流的第一压缩机(105)。 使用基于模型预测控制的高级过程控制器来控制冷却过程,以同时确定一组操纵变量的控制动作,以便在控制一组受控变量中的至少一个的同时优化一组参数中的至少一个参数。 该组操作变量包括:混合的第一制冷剂的组成,第一膨胀装置(135)的设定以及第二膨胀装置(165)的设定。