Hydrocarbon Conversion Process

摘要

The invention relates to methods and equipment for converting C3+ olefin to, e.g., one or more of di-C3+ olefin, oligomers and polymers of C3+ olefin, branched C4+-aldehydes, C4+-carboxylic acids, and C4+ oxygenates. The invention encompasses producing methyl tert-butyl ether and diisobutylene, and converting methyl tert-butyl ether to isobutylene.

主权项

1. An olefin upgrading method comprising:
(a) providing a first portion of a first olefin mixture and a first process fluid, the first olefin mixture comprising ≧1.0 wt. % of C3+ iso-olefins based on the weight of the first olefin mixture, and the first process fluid comprising ≧10.0 wt. % alcohol based on the weight of the first process fluid; (b) reacting the first portion of the first olefin mixture and the first process fluid to produce a first reaction mixture, the first reaction mixture comprising ether and di-C3+ olefin and having a di-C3+ olefin:ether molar ratio ≧1.0; (c) separating from the first reaction mixture a second olefin mixture and a first product, wherein (A) the second olefin mixture comprises ≧0.1 wt. % of oligomers of order ≧3 of C3+ olefins based on the weight of the second olefin mixture and (B) the first product (i) comprises at least a portion of the first reaction mixture's di-C3+ olefin and at least a portion of the first reaction product's ether and (ii) has a di-C3+ olefin:ether molar ratio ≧1.0; (d) providing a third olefin mixture and a second process fluid, wherein the third olefin mixture comprises (i) a second portion of the first olefin mixture or a fourth olefin mixture, the fourth olefin mixture comprising ≧1.0 wt. % of C3+ iso-olefins based on the weight of the fourth olefin mixture, and (ii) at least a portion of the second olefin mixture, and wherein the second process fluid comprises ≧10.0 wt. % alcohol based on the weight of the second process fluid; and (e) reacting the third olefin mixture and the second process fluid to produce a second reaction mixture, the second reaction mixture comprising ether and having di-C3+ olefin:ether molar ratio <1.0.