公开(公告)号：EP0580276B1

公开(公告)日：1997-09-17

申请号：EP93301751.9

申请日：1993-03-08

申请人： CHIYODA CORPORATION

发明人： Kikkawa, Yoshitsugi, Chiyoda Corporation ,  Yamamoto, Osamu, Chiyoda Corporation ,  Ohmori, Kenrou, Chiyoda Corporation ,  Ohmori, Motohiro, Chiyoda Corporation ,  Nozawa, Noriyoshi, Chiyoda Corporation

IPC分类号： F25J3/06 ,  F28D9/00

CPC分类号： F25J1/0055 ,  F25J1/0022 ,  F25J1/0052 ,  F25J1/0087 ,  F25J1/0216 ,  F25J1/0262 ,  F25J1/0265 ,  F25J1/0267 ,  F25J1/0272 ,  F25J1/0282 ,  F25J1/0292 ,  F25J5/002 ,  F25J5/005 ,  F25J2205/02 ,  F25J2220/62 ,  F25J2220/64 ,  F25J2230/60 ,  F25J2245/02 ,  F25J2250/02 ,  F25J2290/32 ,  F25J2290/50 ,  Y10S62/903

摘要： Provided is an improved refrigeration system for pre-cooling natural gas or cooling a mixed refrigerant for natural gas liquefaction in a propane refrigeration process widely used for the liquefaction of natural gas. The system comprises a plurality of plate-fin heat exchangers (31) preferably arranged in a parallel relationship for passing a propane refrigerant as a vertical flow and pre-cooling natural gas or cooling a mixed refrigerant for liquefying natural gas, and a thermo siphon drum (33,35,37,39) for the propane refrigerant consisting of a horizontally disposed, laterally elongated tank. Because the passages of the heat exchanger for the natural gas or the mixed refrigerant extend over their entire length in mutually separate relationship, even when the propane refrigerant, the natural gas or the mixed refrigerant is in both gas and liquid phases, a high efficiency of heat transfer can be attained, and the size of the heat exchanger can be reduced. In particular, from an economic view point, it is preferable if the thermo siphon drum serves also as a flash tank.

公开(公告)号：EP0580276A1

公开(公告)日：1994-01-26

申请号：EP93301751.9

申请日：1993-03-08

申请人： CHIYODA CORPORATION

发明人： Kikkawa, Yoshitsugi, Chiyoda Corporation ,  Yamamoto, Osamu, Chiyoda Corporation ,  Ohmori, Kenrou, Chiyoda Corporation ,  Ohmori, Motohiro, Chiyoda Corporation ,  Nozawa, Noriyoshi, Chiyoda Corporation

IPC分类号： F25J3/06 ,  F28D9/00

CPC分类号： F25J1/0055 ,  F25J1/0022 ,  F25J1/0052 ,  F25J1/0087 ,  F25J1/0216 ,  F25J1/0262 ,  F25J1/0265 ,  F25J1/0267 ,  F25J1/0272 ,  F25J1/0282 ,  F25J1/0292 ,  F25J5/002 ,  F25J5/005 ,  F25J2205/02 ,  F25J2220/62 ,  F25J2220/64 ,  F25J2230/60 ,  F25J2245/02 ,  F25J2250/02 ,  F25J2290/32 ,  F25J2290/50 ,  Y10S62/903

摘要： Provided is an improved refrigeration system for pre-cooling natural gas or cooling a mixed refrigerant for natural gas liquefaction in a propane refrigeration process widely used for the liquefaction of natural gas. The system comprises a plurality of plate-fin heat exchangers (31) preferably arranged in a parallel relationship for passing a propane refrigerant as a vertical flow and pre-cooling natural gas or cooling a mixed refrigerant for liquefying natural gas, and a thermo siphon drum (33,35,37,39) for the propane refrigerant consisting of a horizontally disposed, laterally elongated tank. Because the passages of the heat exchanger for the natural gas or the mixed refrigerant extend over their entire length in mutually separate relationship, even when the propane refrigerant, the natural gas or the mixed refrigerant is in both gas and liquid phases, a high efficiency of heat transfer can be attained, and the size of the heat exchanger can be reduced. In particular, from an economic view point, it is preferable if the thermo siphon drum serves also as a flash tank.

摘要翻译： 提供了一种改进的用于在天然气液化中的丙烷制冷过程中预冷天然气或用于天然气液化的混合制冷剂的制冷系统。 该系统包括多个板翅式热交换器（31），优选以平行关系布置，用于使作为垂直流的丙烷制冷剂和预冷天然气或冷却用于液化天然气的混合制冷剂，以及热虹吸鼓 （33,35,37,39），用于由水平布置的横向细长的罐组成的丙烷制冷剂。 由于用于天然气或混合制冷剂的热交换器的通道以相互分离的关系在其全长上延伸，所以即使丙烷制冷剂，天然气或混合制冷剂都处于气相和液相两者，高效率 可以实现热传递，并且可以减小热交换器的尺寸。 特别地，从经济的观点来看，优选的是，热虹吸鼓也用作闪蒸罐。