Technip France

Technip France S.a.s.

Sandra Thiebault

Julie Anne Gouriou

Vanessa Gahier

Loic Barthe

Henri Paradowski

Loïc Barthe

Vanessa Marie Stéphanie Gahier

Loïc Pierre Roger Barthe

Julie Gouriou

This method comprises a separation of a feed stream () into a first fraction (A) and a second fraction (B). It comprises injecting the first cooled feed fraction () into a first separating flask () to produce a light head stream (). The method comprises expanding a turbine feed fraction () resulting from the light head stream () in a first turbine () up to a first pressure and injecting the first expanded fraction () into a distillation column (). The method comprises expanding the second fraction of the feed stream (B) in a second turbine () up to a second pressure substantially equal to the first pressure. The second expanded fraction (A) from the second dynamic expansion turbine () is used to form a cooled reflux stream (B) injected into the column ().

Method for producing a methane-rich stream and a Chydrocarbon-rich stream, and associated equipment

A method comprising the cooling of the feed natural-gas () in a first heat exchanger () and the introduction of the cooled feed natural-gas () in separator flask (). The method further comprising dynamic expansion of a turbine input flow () in a first expansion turbine () and the introduction of the expanded flow () into a splitter column (). This method includes sampling at the head of the splitter column () a methane-rich head stream () and sampling in the compressed methane-rich head stream () a first recirculation stream (). The method comprises the formation of at least one second recirculation stream () obtained from the methane-rich head stream () downstream from the splitter column () and the formation of a dynamic expansion stream () from the second recirculation stream ().

[object Object]

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.

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.

The method according to the invention comprises the separation of a feed stream () into a first fraction () and a second fraction () and the injection of at least part of the second fraction () into a second dynamic expansion turbine () to form a second expanded fraction (). It comprises the cooling of the second expanded fraction () through heat exchange with at least part of the first headstream () coming from a first column () and the formation of a second feed stream () of the first column () from the second cooled expanded fraction.

This method comprises 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. The method comprises forming a cooled reflux flow 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. It comprises introducing the cooled reflux flow from the heat exchanger into the first distillation column.

Method for producing a flow which is rich in methane and a cut which is rich in C2+ hydrocarbons from a flow of feed natural gas and an associated installation

Growing community of inventors

Coye-la-Foret, France

Sandra Thiebault