Shell Oil Comapny

Other

Sivakumar Sadasivan Vijayakumari

Jeroen Van Westrenen

Antonius Gijsbertus Johannes Kloth

Arjan Allert Jonckers

Hubert Willem Schenck

Julie Hélène Emond Duncan

Eduardo Jorge Festa Pereira Ribeiro

Parag Kotak

The present invention relates to a process for processing a gas mixture comprising methane, carbon dioxide, carbon monoxide, hydrogen, nitrogen, argon and traces of olefins and oxygenates. Methane, carbon dioxide and carbon monoxide, and optionally hydrogen, can be recovered from the gas mixture in a very efficient way.

Method for processing a gas mixture

The invention relates to process for the preparation of an olefinic product comprising ethylene and/or propylene from an oxygenate, the process comprising the following steps: a) an oxygenate conversion step wherein a gaseous effluent comprising olefins and a water-soluble oxygenate is obtained; b) separation of water from the effluent; c) compression of the effluent; d) acid gas removal from the compressed gaseous effluent obtained in step c), wherein the compressed gaseous effluent is treated with a caustic solution in a caustic tower; and e) separating the olefinic product from the gaseous effluent treated in step d), wherein, in a final stage in the caustic tower, water-depleted compressed gaseous effluent is treated with a water stream that is essentially free of water-soluble oxygenate and a spent water stream comprising caustic and water-soluble oxygenate is obtained, which spent water stream is withdrawn from the process.

Process for the preparation of an olefinic product from an oxygenate

The invention removes oxygenate from an olefin rich gas stream, the process comprising:

Process for removing oxygenates from an olefin stream

The invention provides a process for the preparation of an olefinic product, comprising:

Processes for the preparation of an olefinic product

The invention provides a process for preparing an olefin, comprising:

The invention provides a process for the preparation of an olefinic product comprising ethylene and/or propylene comprising: a) steam cracking a paraffinic feedstock to obtain an effluent comprising olefins; b) converting an oxygenate to obtain a gaseous effluent comprising olefins; c) subjecting both effluents to water removal and compression steps, wherein the effluents are combined before the water removal step, between the water removal and the compression steps or after the compression step to obtain a combined gaseous effluent; d) removing acid gas from the combined gaseous effluent obtained in step c), wherein the combined gaseous effluent is treated with a caustic solution in a caustic tower and a non-aqueous liquid stream comprising one or more aromatic C7hydrocarbons is added to the caustic solution to control the formation of red oil, to obtain a treated gaseous effluent; and e) separating the olefinic product from the treated gaseous effluent.

Process for the preparation of an olefinic product comprising ethylene and/or propylene

The invention relates to a process for the preparation of an olefinic product comprising ethylene and/or propylene from an oxygenate comprising: a) an oxygenate conversion step wherein a gaseous effluent comprising olefins is obtained; b) separation of water from the effluent; c) compression of the effluent; d) acid gas removal from the effluent wherein the water-depleted compressed gaseous effluent is treated with a caustic solution in a caustic tower and a non-aqueous liquid stream comprising one or more aromatic C7hydrocarbons is added to the caustic solution to control the formation of red oil; and e) separating the olefinic product from the gaseous effluent treated in step d).

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Gonzales, LA, United States of America

Sivakumar Sadasivan Vijayakumari