| 摘要 |
<p>PROBLEM TO BE SOLVED: To cut down an amount of energy consumption for production of a straight chainα-olefin.SOLUTION: A mixed butene stream including 1-butene and 2-butene is separated into an overhead 1-butene stream and a bottom 2-butene stream in a butene distillation column; a portion of the 2-butene stream is separated so as to form a butene reboiler stream, is heated and vaporized in the reboiler, and is returned to the butene distillation column; from at least a portion of the 1-butene stream, a mixed hexene stream including 1-hexene, 2-hexene and 3-hexene is produced; the mixed hexene stream is separated in a hexene rectification column so as to form an overhead stream of 1-hexene (this is condensed in a cooler) and a bottom stream including 2-hexene and 3-hexene; and a butene reboiler stream is heated by using heat obtained by condensing the overhead stream of 1-hexene.</p> |
