| abstract |
[Problem] The present invention provides a process for producing a conjugated diolefin capable of suppressing the high-boiling reaction by-product from remaining in a post-quenching step of a quenching tower, and an industrial grade mixed hydrocarbon that is not necessarily highly pure. An object of the present invention is to provide a method for producing a conjugated diolefin (for example, 1,3-butadiene) that can be used as a raw material for synthetic rubber, resin, etc. even when a conjugated diolefin (for example, butadiene) is produced from the raw material. To do. [Solution] In the method for producing a conjugated diolefin of the present invention, a hydrocarbon containing a monoolefin having 4 or more carbon atoms and oxygen are supplied to a reactor containing a catalyst containing a metal oxide and a carrier and conjugated. A step of generating a reaction product gas containing diolefin, and a step of feeding the reaction product gas into a quenching tower and washing with a quenching agent, wherein an organic amine aqueous solution is used as the quenching agent. |