Trial production of FCC light gasoline etherification unit with large processing capacity

In order to solve the problem that the FCC light gasoline from FCC gasoline hydrogenation unit was not refined completely by FCC light gasoline etherification unit, the trial production of FCC light gasoline etherification unit with large processing capacity was presented to increase the economic benefit of refinery and gain more benefits to our company. The processing capacity of FCC light gasoline etherification unit was raised from 60 t/h to over 70 t/h, through one month trial production, compared with the calibration data, the results showed that molar ratio of methanol/tert-olefins decreased by 0.17, space velocity increased by 0.24 h^-1, inlet temperature of first and second etherification reactor increased by 10.9 ℃ and 13.2 ℃ respectively, column bottom temperature of etherification fractionator decreased by 3.4 ℃, and other process parameters were almost the same with calibration data; the RON for etherifying gasoline reached 99.2, the unit energy consumption decreased 3.24×10⁵ kJ/t, and the yield of etherifying gasoline increased by 3.53%. The unit is stable in operation, the etherifying gasoline quality meet the blending requirement, and the economic benefit increase 26.88 million yuan annually.