公开(公告)号：US10107549B2

公开(公告)日：2018-10-23

申请号：US14415109

申请日：2013-07-04

Applicant: SAIPEM S.A.

Inventor： Marc Bonnissel ,  Bertrand Du Parc ,  Boris Bolosier

IPC: F25J1/02 ,  F25J1/00 ,  F17C13/08

Abstract: Process for liquefying natural gas in a cryogenic heat exchanger by flowing in indirect contact with refrigerant fluid entering heat exchanger at a first inlet at temperature T0 and pressure P1, and flowing through the exchanger as co-current with the natural gas stream, leaving the heat exchanger in the liquid state, then being expanded at the cold end of the exchanger to return to gaseous state at a pressure P′1 P1 and temperature T1 T0, before leaving the hot end of exchanger by outlet orifice in gaseous state T0. The fluid is then reliquefied to the inlet of the exchanger via compression followed by partial condensation and phase separation, a first liquid phase taken to the first inlet, a first gaseous portion compressed by a second compressor and cooled in desuperheater by contact with portion of the first liquid phase, prior to condensing in a second condenser.

公开(公告)号：US20150184930A1

公开(公告)日：2015-07-02

申请号：US14415109

申请日：2013-07-04

Applicant: SAIPEM S.A.

Inventor： Marc Bonnissel ,  Bertrand Du Parc ,  Boris Bolosier

IPC: F25J1/00 ,  F17C13/08

CPC classification number: F25J1/0022 ,  F17C13/082 ,  F25J1/0055 ,  F25J1/0214 ,  F25J1/0278 ,  F25J1/0291 ,  F25J1/0292 ,  F25J1/0296 ,  F25J2205/90 ,  F25J2240/60

Abstract: Process for liquefying natural gas in a cryogenic heat exchanger by flowing in indirect contact with refrigerant fluid entering heat exchanger at a first inlet at temperature T0 and pressure P1, and flowing through the exchanger as co-current with the natural gas stream, leaving the heat exchanger in the liquid state, then being expanded at the cold end of the exchanger to return to gaseous state at a pressure P′1 P1 and temperature T1 T0, before leaving the hot end of exchanger by outlet orifice in gaseous state T0. The fluid is then reliquefied to the inlet of the exchanger via compression followed by partial condensation and phase separation, a first liquid phase taken to the first inlet, a first gaseous portion compressed by a second compressor and cooled in desuperheater by contact with portion of the first liquid phase, prior to condensing in a second condenser.

Abstract translation: 在低温热交换器中液化天然气的方法，该方法是在温度为T0和压力P1的第一入口处与进入热交换器的制冷剂流体间接接触流动，并与天然气流并流流过交换器，留下热量 交换器处于液态，然后在交换器的冷端膨胀，在压力P'1 P1和温度T1 T0下返回气态，然后在气态T0下通过出口孔离开交换器的热端。 然后通过压缩将流体再液化到交换器的入口，随后部分冷凝和相分离，取出到第一入口的第一液相，由第二压缩机压缩的第一气态部分，并在过热降温器中通过与部分 在第二冷凝器中冷凝之前的第一液相。

公开(公告)号：US20140116084A1

公开(公告)日：2014-05-01

申请号：US14126735

申请日：2012-06-22

Applicant: SAIPEM S.A.

Inventor： Marc Bonnissel ,  Bertrand Du Parc ,  Eric Zielinski

IPC: F25J1/00

CPC classification number: F25J1/0022 ,  C09K5/041 ,  C09K5/042 ,  C09K2205/13 ,  C09K2205/132 ,  F25B9/06 ,  F25J1/005 ,  F25J1/0072 ,  F25J1/0097 ,  F25J1/0204 ,  F25J1/0212 ,  F25J1/0254 ,  F25J1/0283 ,  F25J1/0287 ,  F25J1/0288 ,  F25J2270/16

Abstract: A method for liquefying a natural gas primarily including methane, preferably at least 85% of methane, the other components essentially including nitrogen and C2-C4 alkanes, in which the natural gas to be liquefied is liquefied by circulating at a pressure P0 no lower than the atmospheric pressure (Patm), P0 preferably being higher than the atmospheric pressure, in at least one cryogenic heat-exchanger (EC1, EC2, EC3) by a counter-current closed-circuit circulation in indirect contact with at least one stream of coolant gas remaining in the compressed gaseous state at a pressure P1 that is entering the cryogenic heat-exchanger at a temperature T3′ that is lower than T3, T3 being the liquefaction temperature of the liquefied natural gas at the pressure P0 at the output of said cryogenic exchanger, characterised in that the coolant gas includes a mixture of nitrogen and at least one other component selected from among neon and hydrogen.

Abstract translation: 液化天然气的方法，主要包括甲烷，优选至少85％的甲烷，其他组分基本上包括氮和C 2 -C 4烷烃，其中待液化的天然气通过以不低于 在至少一个低温热交换器（EC1，EC2，EC3）中，通过与至少一个冷却剂流间接接触的逆流闭路循环，大气压力（Patm），P0优选高于大气压力 气体以处于低于T3的温度T3'进入低温热交换器的压力P1保持在压缩气态，T3是液化天然气在所述低温输出处的压力P0下的液化温度 交换器，其特征在于，所述冷却剂气体包括氮和选自氖和氢中的至少一种其它组分的混合物。