| 摘要 |
An etherification process for reacting a hydrocarbon mixture containing C4-C7 iso-olefins with excess methanol to produce tertiary alkyl methyl ethers. The improved technique comprises operations for separating etherification reaction effluent to recover a liquid fraction rich in gasoline range unreacted hydrocarbons in mixture with liquid ether product, recovering from the reaction effluent a vapor fraction rich in unreacted light olefin including C4-C5 olefins and unreacted methanol, and converting or interconverting a major portion of the light olefin to C4+ olefins and/or oligomerization products while substantially completely converting the unreacted methanol to an acid zeolite catalysis conversion product comprising olefins and normally liquid hydrocarbon product. A portion of the conversion product is recycled to the etherification process. |
