Method And A System For Producing One Or More Olefins

Abstract: The present invention relates to a method (100, 200) for producing one or more olefins (103), wherein one or more paraffins are reacted to obtain a product mixture (102) in one or more reaction steps (10), wherein the reaction step or steps (10) are carried out using heat of combustion, wherein the product mixture (102) contains the one or more olefins, hydrogen and methane, wherein an endgas (112) is formed using the product mixture (102) or a part thereof in one or more separation steps (20, 21), wherein the endgas (112) is substantially free of the one or more olefins and contains the hydrogen and methane from the product mixture (102) or a portion thereof, wherein the endgas (112) or a portion thereof is permanently discharged from the method (100), wherein the heat of combustion is provided using a fuel gas (111), wherein a molar ratio of hydrogen to methane in the endgas (112) is at least as high as in the product mixture (102) and is lower in the fuel gas (111) than in the endgas (112), wherein a flue gas (121) containing carbon dioxide is formed when the heat of combustion is provided, and wherein the flue gas (121) or a part thereof is subjected to carbon dioxide capture (30). The present invention also relates to a corresponding system.

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