主要是关于Bioethers，是以ETBE作为调和组分加入汽油里面 With a slight investment/revamp, existing MTBE units can start producing ETBE. These ETBE units have been using dry ethanol with 0.1% water 。As ETBE kinetics are still favourable from an industry perspective, the conversions/yields are good even with wet recycle ethanol. If one can meet the TBA (tertiary butyl alcohol)specification in ETBE, there is no significant obstacle preventing the revamping of existing MTBE units. 这是上一段，发的是下一段的开头。开头之后剩下的就很好理解了。
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in producing etbe, the rht-etbe process can enhance yields from existing mtbe units with bulk catalyst utilisation, resulting in a 12-18-month payout against any packaged catalyst cost. 在生产乙基叔丁基醚方面，现有的mtbe应用散装催化剂能提高rht-etbe 工艺的 产量，而散装催化剂的成本是包装催化剂成本的1-1.5倍。
in producing etbe, the rht-etbe process can enhance yields from existing mtbe units with bulk catalyst utilisation, resulting in a 12-18-month payout against any packaged catalyst cost. 其中：rht： refinery hydrogenation technology etbe：乙基叔丁基醚
the rht-etbe process can enhance yields from existing mtbe units with bulk catalyst utilisation, resulting in a 12-18-month payout against any packaged catalyst cost. rht-etbe工艺能从现存的,使用了大量催化剂的mtbe单元提高产量, 其结果是可以支付12--18个月的催化剂成本。
in producing etbe,the rht-etbe process can enhance yields from existing mtbe units with bulk catalyst utilisation , resulting in a 12-18-month payout against any packaged catalyst cost. 这句话之所以费解，是因为标红处难理解，楼主能不能提供更多的上下文呢？欢迎大家继续讨论。
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