| 摘要 |
A process is disclosed for converting a light hydrocarbon feedstock that contains a mixture of linear and branched olefins to ether-rich high octane gasoline streams that include tertiary alkyl and isoalkyl ethers such as MTBE, TAME, methyl isopropyl ether (MIPE), and methyl sec-butylether (MSBE). Further, it has been discovered that, following etherification unreacted paraffins in the process can be dehydrogenated to produce C3-C4 olefins which can be recycled to the etherification process. The conversion is achieved by utilizing the differing reactivity of tertiary olefins under selected conditions compared to linear olefins in the catalyzed etherification processes. The process integrates a first stage tertiary olefin etherification, separation of ether-rich gasoline and a second stage linear olefin etherification to produce a second ether rich gasoline stream.
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