| 摘要 |
A process for producing propylene, which including feeding at least one of dimethyl ether and methanol to a reactor to be reacted in the presence of a catalyst; supplying an obtained reaction product to a separator by which low-boiling compounds having a boiling point of −50° C. or lower at atmospheric pressure among the reaction product are separated; and recycling a proportion of at least 70% of a total amount of the separated low-boiling compounds to said reactor.
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