Technip France

Technip Energies France

Technip-Coflexip

Yvon Simon

Jean-Paul Laugier

Bruno Destour

Victor Kaiser

Aurélia Dadou

David Chazallet

Marco Valente

Walkiria Braga

This method comprises passing a residual stream into a flash drum to form a gaseous overhead flow and liquid bottom flow, and feeding the bottom flow into a distillation column, It comprises cooling the overhead flow in a heat exchanger to form a cooled overhead flow. It comprises the extraction of a gaseous overhead stream at the head of the distillation column, and the formation of at least one effluent stream from the overhead stream and/or from the top stream. The separation of the cooled overhead flow comprises passing the cooled overhead flow into an absorber, and injecting a methane-rich stream into the absorber to place the cooled overhead flow in contact with the methane-rich stream.

Method for recovering a stream of C2+ hydrocarbons in a residual refinery gas and associated installation

This method includes introducing a downstream stream () of cracked gas from a downstream heat exchanger () in a downstream separator () and recovering, at the head of the downstream separator (), a high-pressure fuel gas stream (). The method includes the passage of the stream () of fuel through the downstream exchanger () and an intermediate exchanger () to form a reheated high-pressure fuel stream (), the expansion of the reheated high-pressure fuel stream () in at least a first dynamic expander () and the passage of the partially expanded fuel stream () from the intermediate exchanger () in a second dynamic expander () to form an expanded fuel stream (). The expanded fuel stream () from the second dynamic expander () is reheated in the downstream heat exchanger () and in the intermediate heat exchanger ().

Method for fractionating a stream of cracked gas to obtain an ethylene-rich cut and a stream of fuel, and related installation

This method comprises: The upstream, intermediate and downstream cooling steps is carried out without a heat exchanger respectively of an upstream stream of cracked gas (), an intermediate stream of cracked gas () and a downstream stream of cracked gas () with an external refrigeration cycle.

Method for fractionating a stream of cracked gas, using an intermediate recirculation current, and related plant

This method includes the separation of an upstream partly condensed cracked gas stream in an intermediate separator (B) in order to recover an intermediate liquid (), and an intermediate cracked gas stream () and the introduction of the intermediate liquid () into an intermediate demethanization column (). The method comprises the sampling of a portion of the intermediate liquid () and the expansion of at least one first fraction () obtained from the sampled portion (). It comprises the putting of the first expanded fraction in a heat exchange relationship with the intermediate head stream () from the column () for at least partly condensing the intermediate head stream (). The method includes the separation of the intermediate partly condensed head stream in a first reflux separator () in order to form a liquid stream () introduced into the intermediate column () and a combustible gas stream ().

Method for treating a cracked gas stream from a hydrocarbon pyrolysis installation and installation associated therewith

A process for the high-yield recovery of ethylene and heavier hydrocarbons from the gas produced by pyrolysis of hydrocarbons in which the liquid products resulting from the fractionated condensation of a cracking gas for the recovery of almost all the ethylene, are supplied to a distillation column, called a de-ethanizer, at different intermediate levels. At the top of the de-ethanizer the vapor of the column distillate is treated directly in an acetylene hydrogenation reactor, the effluent containing virtually no acetylene being separated by a distillation column called a de-methanizer, into an ethylene- and ethane-enriched tail product, while the head product is recycled by compression or treated for subsequent recovery of ethylene.

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Andresy, France

Yvon Simon