The present invention relates to a conjugated diene production apparatus and method, more particularly to a reactor for the oxidative dehydrogenation reaction of a raw material gas containing mono-olefin having a carbon number of 4 or more; After the conversion of the high boiling point material of the product gas produced from the reactor to COx (x is 1 or 2), - a reactor (post-reactor); The after-cooling tower to cool the generated gas discharged from the reactor; Absorb the cooled product gas to the absorption tower absorption solvent for preparing the solution absorption; And distilled to remove the absorbing solution separation column to obtain a crude (crude) conjugated diene; characterized in that it comprises a conjugated diene relates to a production apparatus and production method.
According to the invention, the product gas (product gas) the by-products (heavies) of the treated water (water treatment) The hard high boiling cooling (quenching) and the cleaning of reducing the concentration of point material to product gas (scrubbing) when, the scrubber comprises a reduce the load on the (scrubber) and this has the effect of increasing the operating time duration and provides a conjugated diene production apparatus and a production method of reducing wastewater treatment costs.