Total Research & Technology Feluy

Ifp Energies Nouvelles

Axens

Catherine Boutrot

Manuela Arratia

Babua Das

Walter Vermeiren

Lionel Magna

Jean-Francois Le Coz

Jerome Pigourier

Jérôme Pigourier

Jean-François Le Coz

Frederic Favre

Nicolas Janot

Xavier Liege

Etienne Niderkorn

Daniel Jean Vinel

Daniel-Jean Vinel

Frédéric Favre

The invention relates to a device (D) for distributing a fluid, which is able to be arranged in a fixed catalytic bed (C, C) of a reactor (R), said device comprising

Device for dispensing a fluid, which device can be arranged in a reactor comprising a fixed catalytic bed

A process for removing light components from an ethylene stream may include providing a dried ethylene stream containing ethylene, ethane, CO, CO, H, CH, and Chydrocarbons. The process may include sending the dried ethylene stream to a stripper to produce an overhead stream containing ethylene, CO, Hand CH, and a bottom stream containing ethylene, ethane, CO, and Chydrocarbons. The gaseous phase on top of the stripper may be condensed in a heat exchanger cooled by a refrigerant stream to get a first gaseous phase and a first liquid phase. The first gaseous phase may be condensed in a heat exchanger cooled by liquid ethane or liquid ethylene to get a second gaseous phase containing ethylene CO, Hand CHand a second liquid phase. The first and second liquid phases may be the reflux of the stripper.

Process for removing light components from an ethylene stream

The invention concerns a process for the oligomerization of ethylene into alpha-olefins, comprising a step for the oligomerization of ethylene, a step for deactivation of the catalyst, a and step for separation of the products, the reactor being provided with a cooling loop () by means of which at least a portion of the reaction effluent is moved through at least two switchable heat exchangers, said heat exchangers being cleaned alternately by means of an integrated cleaning device.

Process for the oligomerization of olefins employing a cleaning device

The present invention is, in a first embodiment, a process for removing oxygenated contaminants from an ethylene stream comprising: a) providing a dried ethylene stream (A) comprising essentially ethylene, up to 1 w % oxygenates, ethane, CO, CO2, H2, CH4 and C3+ hydrocarbons, b) sending said stream (A) to a stripper (also referred to as a demethanizer) to produce an overhead stream comprising essentially CO, H2 and CH4, a bottom stream comprising essentially ethylene, oxygenates, ethane, CO2 and C3+ hydrocarbons, c) sending said bottom stream of step b) to a deethanizer to produce a bottom stream comprising essentially ethane, oxygenates and C3+ hydrocarbons, an overhead stream consisting essentially of ethylene and CO2, d) sending said overhead of step c) to a fixed bed CO2 adsorption zone to recover an ethylene stream essentially free of CO2. In another embodiment the CO2 adsorption zone can be located at the inlet of the deethanizer. In another embodiment the demethanizer is replaced by two demethanizers. In another embodiment the deethanizer is replaced by two C2 splitters.

Process for removing oxygenated contaminates from an ethylene stream

The present invention is, in a first embodiment, a process for removing oxygenated contaminants from an ethylene stream comprising: a) providing a dried ethylene stream (A) comprising essentially ethylene, up to 1 w % oxygenates, ethane, CO, CO2, H2, CH4 and C3+ hydrocarbons, b) sending said stream (A) to a stripper (also referred to as a demethanizer) to produce an overhead stream comprising essentially CO, H2 and CH4, a bottom stream comprising essentially ethylene, oxygenates, ethane, CO2 and C3+ hydrocarbons, c) sending said bottom stream of step b) to a deethanizer to produce a bottom stream comprising essentially ethane, oxygenates and C3+ hydrocarbons, an overhead stream consisting essentially of ethylene and CO2, d) sending said overhead of step c) to a fixed bed CO2 adsorption zone to recover an ethylene stream essentially free of CO2. In another embodiment the CO2 adsorption zone can be located at the inlet of the deethanizer. In another embodiment the demethanizer is replaced by two demethanizers. In another embodiment the the deethanizer is replaced by two C2 splitters.

The present invention is a process for removing oxygenated contaminants from an ethylene stream comprising: a) providing a dried ethylene stream (A) comprising essentially ethylene, up to 1 w % oxygenates, ethane, CO, CO2, H2, CH4 and C3+ hydrocarbons, b) sending said stream (A) to a C2 splitter/deethanizer to produce a bottom stream comprising essentially ethane, oxygenates and C3+ hydrocarbons, an overhead comprising the remaining components, c) sending said overhead to a fixed bed CO2 adsorption zone to recover a stream essentially free of CO2, d) sending said stream essentially free of CO2 to a demethanizer/CO stripper to recover an overhead comprising H2, CH4 and CO, liquid ethylene at the bottoms. In another embodiment the CO2 removal step can be made on the recovered ethylene.

The present invention is, in a first embodiment, a process for removing oxygenated contaminants from an ethylene stream comprising: In another embodiment the CO2 adsorption zone can be located at the inlet of the deethanizer. In another embodiment the demethanizer is replaced by two demethanizers. In another embodiment the deethanizer is replaced by two C2 splitters.

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Chatou, France

Catherine Boutrot