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    HYBRID GAS LIQUEFACTION CYCLE WITH MULTIPLE EXPANDERS
    5.
    发明公开
    HYBRID GAS LIQUEFACTION CYCLE WITH MULTIPLE EXPANDERS 有权
    带有多个扩展设备混合式气体液化循环

    公开(公告)号：EP1668300A1

    公开(公告)日：2006-06-14

    申请号：EP04768455.0

    申请日：2004-09-14

    申请人： AIR PRODUCTS AND CHEMICALS, INC.

    发明人： ROBERTS, Mark, Julian ,  SPILSBURY, Christopher, Geoffrey ,  BROSTOW, Adam, Adrian

    IPC分类号： F25J1/02

    CPC分类号： F25J1/0072 ,  F25J1/0022 ,  F25J1/005 ,  F25J1/0052 ,  F25J1/0097 ,  F25J1/0217 ,  F25J1/0218 ,  F25J1/0267 ,  F25J1/0268 ,  F25J1/0274 ,  F25J1/0291 ,  F25J1/0292 ,  F25J2220/62 ,  F25J2220/64 ,  F25J2245/02 ,  F25J2270/16

    摘要： Gas is liquefied by a method comprising cooling a feed gas (1) by a first refrigeration system (45, 47, 49, 51, 53, 21, 55, 57, 23, 21) in a first heat exchange zone (21) and withdrawing a substantially liquefied feed stream (25) therefrom, further cooling the substantially liquefied feed stream in a second heat exchange zone (27) by indirect heat exchange with one or more work-expanded refrigerant streams (29) provided by a second refrigeration system (81, 83, 59, (i) 61, 63, 65, 31, 29, 27, 67 & (ii) 69, 71, 73, 75, 77, & 79, 63), and withdrawing therefrom a further cooled, substantially liquefied feed stream (33). At least one (29) of the one or more work-expanded refrigerant streams is provided by compressing (83) one or more refrigerant gases (81) to provide a compressed refrigerant stream (59), cooling all or a portion (61) of the compressed refrigerant stream (59) in a third heat exchange zone (63) to provide a cooled, compressed refrigerant stream (65), and work expanding (31) the cooled, compressed refrigerant stream (65) to provide one of the one or more work-expanded refrigerant streams (29). The flow rate of a work-expanded refrigerant stream (29) in the second heat exchange zone (27) is less than the total flow rate of one or more work-expanded refrigerant streams (67 + 77 = 79) in the third heat exchange zone (63) or additional refrigeration duty is provided to the third heat exchange zone by a third refrigeration system (Fig. 9; 911, 913, 905, 903, 907, 909, 903).

    Dual mixed refrigerant cycle for gas liquefaction
    9.
    发明授权
    Dual mixed refrigerant cycle for gas liquefaction 有权
    使用两种混合制冷剂循环的天然气液化

    公开(公告)号：EP1008823B1

    公开(公告)日：2004-09-15

    申请号：EP99309813.6

    申请日：1999-12-07

    申请人： AIR PRODUCTS AND CHEMICALS, INC.

    发明人： Roberts, Mark Julian ,  Agrawal, Rakesh

    IPC分类号： F25J1/02 ,  F25J3/02 ,  F25J3/06 ,  F25J3/08

    CPC分类号： F25J1/0022 ,  F25J1/0052 ,  F25J1/0055 ,  F25J1/0097 ,  F25J1/0214 ,  F25J1/0231 ,  F25J1/0267 ,  F25J1/0278 ,  F25J1/0291 ,  F25J1/0292 ,  F25J2220/62 ,  F25J2220/64 ,  F25J2240/40 ,  F25J2245/02

    摘要： A pressurised gas (102), especially natural gas is liquefied using high and low level heat exchangers (104, 122) in each of which is provided by a respective mixed refrigerant (110, 124) which is vaporised at a respective essentially constant pressure. The mixed refrigerant vapour (140) from the high level heat exchanger (404) is compressed in at least two stages of compression which generates an interstage compressed refrigerant. The interstage compressed refrigerant is cooled, partially condensed, and separated into an interstage refrigerant vapour and an interstage refrigerant liquid (144). The interstage refrigerant vapour is compressed to yield a further compressed refrigerant (146) which is cooled, condensed, optionally subcooled, and flashed (450) to provide the first vaporising mixed refrigerant (410) and the interstage liquid refrigerant (144) is subcooled and flashed (468) at the first essentially constant pressure to yield additional refrigeration in the first heat exchange zone (404). The process and apparatus of the invention are especially well-suited for installation on ships (including barges) and offshore platforms.

    Dual mixed refrigerant cycle for gas liquefaction
    10.
    发明公开
    Dual mixed refrigerant cycle for gas liquefaction 有权
    用于气体液化的双混合制冷剂循环

    公开(公告)号：EP1008823A2

    公开(公告)日：2000-06-14

    申请号：EP99309813.6

    申请日：1999-12-07

    申请人： AIR PRODUCTS AND CHEMICALS, INC.

    发明人： Roberts, Mark Julian ,  Agrawal, Rakesh

    IPC分类号： F25J1/02

    CPC分类号： F25J1/0022 ,  F25J1/0052 ,  F25J1/0055 ,  F25J1/0097 ,  F25J1/0214 ,  F25J1/0231 ,  F25J1/0267 ,  F25J1/0278 ,  F25J1/0291 ,  F25J1/0292 ,  F25J2220/62 ,  F25J2220/64 ,  F25J2240/40 ,  F25J2245/02

    摘要： A pressurised gas (102), especially natural gas is liquefied using two heat exchangers (104, 122) in each of which is provided by a mixed refrigerant (110, 124) which is vaporised at a respective essentially constant pressure. Feed precooling and high level liquid refrigerant subcooling and, preferably also low level refrigerant precooling are effected in the first heat exchanger (104) against vaporising low level refrigerant. Preferably, hydrocarbons of more than 3 or more than 4 carbon atoms are removed (116) by distillation (106) and subsequent fractionation (114) of natural gas cooled in the first heat exchanger (104). The process and apparatus of the invention are especially well-suited for installation on ships(including barges) and offshore platforms.

    摘要翻译： 使用两个热交换器（104,122）将加压气体（102），特别是天然气液化，每个热交换器由混合制冷剂（110,124）提供，所述混合制冷剂在各自基本恒定的压力下汽化。 在第一热交换器（104）中进行预冷却和高位液体制冷剂过冷并且优选还有低位制冷剂预冷却以防止汽化低位制冷剂。 优选地，通过在第一热交换器（104）中冷却的天然气的蒸馏（106）和随后的分馏（114）将大于3或大于4个碳原子的烃去除（116）。 本发明的方法和设备特别适合安装在船舶（包括驳船）和海上平台上。