| 摘要 |
<p>A process for recovering lower carbon olefins from a product gas, wherein said product gas is a mixed gas obtainable from the methanol and/or dimethyl ether to olefin conversion (MTO and/or DTO), said process comprising deethanizing said product gas to obtain C2 and light components at the top of the column and C3 and heavy components at the bottom of the column, and demethanizing C2 and light components to obtain a tail gas and liquid phase C2 component, condensing said tail gas and recovering the condensed liquid phase back to said demethanizing step.</p> |
