公开(公告)号：US09823015B2

公开(公告)日：2017-11-21

申请号：US14747417

申请日：2015-06-23

Applicant: TECHNIP FRANCE

Inventor： Vanessa Gahier ,  Julie Gouriou ,  Loic Barthe ,  Sandra Thiebault

IPC: F25J3/02

CPC classification number: F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J2200/02 ,  F25J2200/30 ,  F25J2200/50 ,  F25J2200/76 ,  F25J2205/04 ,  F25J2210/06 ,  F25J2230/24 ,  F25J2230/60 ,  F25J2240/02 ,  F25J2245/02 ,  F25J2270/02 ,  F25J2270/04 ,  F25J2270/06 ,  F25J2270/88 ,  F25J2290/80

Abstract: This method envisions cooling the supply flow in a first heat exchanger, separation in a first separation flask in order to produce a light upper flow and a heavy lower flow and dividing the light upper flow into a supply fraction of a dynamic pressure reduction turbine and a supply fraction of a first distillation column. A cooled reflux flow is formed from an effluent from a dynamic pressure reduction turbine, the portion of the effluent being cooled and at least partially liquefied in a heat exchanger. The cooled reflux flow is introduced from the heat exchanger into the first distillation column.

公开(公告)号：US20200208911A1

公开(公告)日：2020-07-02

申请号：US16811953

申请日：2020-03-06

Applicant: TECHNIP FRANCE

Inventor： Vanessa Gahier ,  Julie Gouriou ,  Sandra Thiebault ,  Loic Barthe

IPC: F25J3/02

Abstract: This method comprises a separation of a feed stream (16) into a first fraction (41A) and a second fraction (41B). It comprises injecting the first cooled feed fraction (42) into a first separating flask (22) to produce a light head stream (44).The method comprises expanding a turbine feed fraction (48) resulting from the light head stream (44) in a first turbine (26) up to a first pressure and injecting the first expanded fraction (54) into a distillation column (30).The method comprises expanding the second fraction of the feed stream (41B) in a second turbine (40) up to a second pressure substantially equal to the first pressure.The second expanded fraction (91A) from the second dynamic expansion turbine (40) is used to form a cooled reflux stream (91B) injected into the column (30).

公开(公告)号：US09759481B2

公开(公告)日：2017-09-12

申请号：US14269656

申请日：2014-05-05

Applicant: TECHNIP FRANCE

Inventor： Henri Paradowski ,  Sandra Thiebault ,  Loic Barthe

IPC: F25J3/02

CPC classification number: F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J2200/02 ,  F25J2200/70 ,  F25J2200/76 ,  F25J2205/04 ,  F25J2210/04 ,  F25J2210/06 ,  F25J2230/24 ,  F25J2230/60 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2245/02 ,  F25J2270/04 ,  F25J2270/06 ,  F25J2270/88 ,  F25J2290/80

Abstract: This method comprises cooling the feed natural gas in a first heat exchanger and introducing the cooled, feed natural gas into a first separation flask.It comprises the dynamic expansion of a turbine supply flow in a first expansion turbine and introducing the expanded flow into a separation column. This method comprises removing, at the head of the separation column, a head flow rich in methane and removing a first recirculation flow from the compressed head flow rich in methane.The method comprises forming at least a second recirculation flow obtained from the head flow rich in methane downstream of the separation column and forming a dynamic expansion flow from the second recirculation flow.