公开(公告)号：US20190310013A1

公开(公告)日：2019-10-10

申请号：US16315115

申请日：2017-06-20

Applicant: SAIPEM S.P.A.

Inventor： Eric ZIELINSKI ,  Nathalie TRICHARD ,  Julien BELLANDE ,  Benjamin RODIER

IPC: F25J1/00 ,  F25J1/02

Abstract: A process for liquefying a natural gas comprising a mixture of hydrocarbons predominating in methane, the process comprising a first semi-open refrigerant cycle with natural gas in which any natural gas liquids that have condensed are separated from the natural gas feed stream, which stream then passes through a main cryogenic heat exchanger (4) in order to contribute by heat exchange to pre-cooling a main natural gas stream (F-P) and to cooling an initial refrigerant gas stream (G-0), a second semi-open refrigerant cycle with natural gas for contributing to pre-cooling the natural gas and the refrigerant and also to liquefying the natural gas, and a closed refrigerant cycle with refrigerant gas for subcooling the liquefied natural gas and for delivering refrigeration power in addition to the other two cycles. The invention also provides a natural gas liquefaction installation for performing such a process.

公开(公告)号：US20200155960A1

公开(公告)日：2020-05-21

申请号：US16604621

申请日：2018-03-29

Applicant: SAIPEM S.P.A.

Inventor： Bertrand DUPARC ,  Benjamin RODIER ,  Boris BOLOSIER

IPC: B01D3/00 ,  B01D53/18

Abstract: A double liquid distribution device is suitable for a fractionating or wash column comprising a high collector tray connected to a manifold support via at least two longitudinal liquid downflow ducts. The manifold support supports at least two series of transverse tubular manifolds and feeds liquid respectively to the first series of manifolds via a first longitudinal duct and to the second series of manifolds via a second longitudinal duct. Each manifold includes distribution orifices in its under face suitable for distributing the liquid onto the top face of the packing bed. The two longitudinal liquid downflow ducts are connected together in a low portion by a communication device fitted with a valve having controlled opening suitable for allowing the liquid to be transferred between the two longitudinal ducts in controlled manner.