Abstract: The application of the first set of FCC light gasoline etherification device with capacity of 500kt/a in CNPC Guangxi Petrochemical Company was introduced, which adopted an independent catalytic distillation module technology. The results showed that the C5= conversion in the etherification reactor reaches to 73.37%, higher than the design guarantee value 60%. The total C5= conversion of the whole unit is up to 93.42%, close to the design guarantee value 93%. The C6= conversion is 65.65%. The RON of the etherified light gasoline increases by 2.6 units with a decrease of olefin from 68.2% (v) to 29.2% (v). The saturation vapor pressure of the light gasoline is reduced by 35.3 kPa, indicating that the etherification process is conducive to improve the proportion of high-grade gasoline. The 60 kt/a methanol can be converted into gasoline component and the economic benefit is remarkable.

Key words: light gasoline etherification, catalytic distillation module, isoamylene, TAME