Method and plant for producing olefin

Abstract

The invention relates to a method for producing an olefin. In the method, a reaction feedstock stream is formed that contains at least one paraffin, oxygen and water, and a part of the paraffin and ofthe oxygen is converted into the olefin in the reaction feedstock stream, wherein a process gas is obtained through oxidative dehydrogenation using a catalyst, the process gas contains at least the non-converted part of the paraffin and of the oxygen, the olefin and the water from the reaction feedstock stream. According to the invention, at least one characteristic value is determined that displays an activity of the catalyst, and an amount of water in the reaction feedstock stream is set based on the at least one determined characteristic value. The invention also relates to a correspondingplant (100).

Description

technical field [0001] The invention relates to a process for the production of olefins and a corresponding plant according to the preambles of the independent claims. Background technique [0002] The oxidative dehydrogenation (ODH) of paraffins having 2 to 4 carbon atoms is known in principle. In ODH, the paraffins are reacted with oxygen, inter alia to give the respective olefins and water. [0003] ODH may be advantageous compared to established methods for producing olefins, such as steam cracking or catalytic dehydrogenation. For example, due to the exothermic nature of the reactions involved, there are no thermodynamic equilibrium constraints. ODH can be performed at relatively low reaction temperatures. Since the presence of oxygen allows regeneration in situ, regeneration of the catalysts used is in principle not necessary. Finally, less valuable by-products such as coke are formed compared to steam cracking. [0004] For further details on ODH refer to relevan...

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Problems solved by technology

[0009] Therefore, a major challenge in these methods is to control the exothermic reaction

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