METHOD OF PROCESSING PRODUCT STREAM Russian patent published in 2011 - IPC C10G11/22 C10G70/04 C10G27/04 B01D53/02 B01D53/14 B01D53/72 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of processing a product stream from an autothermal cracking process, said product stream containing one or more olefins, hydrogen, carbon monoxide, carbon dioxide and one or more oxygenates, and in which oxygenates are present in the product stream before processing with overall concentration from 100 to 5000 parts per million by weight. Said method involves: (a) contacting the product stream with an aqueous stream containing at least one compound selected from substances which can have the following formulae: (1) H₂N-OR₁, (2) H₂N-NR₂R₃, in which R₁ is selected from H and carbon-containing substitutes; R₂ is H; R₃ is a ketyl group of formula C(O)NR₄R₅, in which R₄ is H or alkyl and R₅ is H, alkyl, or NH₂; for selective removal of oxygenates in the presence of carbon dioxide, and (b) subsequently passing the processed stream from step (a) in order to remove oxygenates in a system for removing carbon dioxide based on an amine in order to remove carbon dioxide from the stream. The invention also relates to a method of producing olefins via autothermal cracking of hydrocarbon raw material involving the method described above.

EFFECT: present methods provide an alternative to the current process of removing oxygenates.

5 cl, 5 ex, 5 dwg