The present invention pertains to a method for manufacturing alkylate oil using a composite
ionic liquid as catalyst. A mixture of
isobutane and C4 olefins is used as the
raw material, and a composite
ionic liquid is used as catalyst to carry out an
alkylation reaction. The
alkane / olefin ratio in the
raw material is higher than 1:1. In the composition of the aforementioned composite
ionic liquid catalyst, the cations come from a hydrohalide of an
alkyl-containing amine or
pyridine, while the anions are composite coordinate anions coming from two or more
metal compounds. One of the
metal compounds is an aluminum compound, while other
metal compounds are compounds of Group IB and Group IIB elements of the
Periodic Table and the transition metals. The present invention also provides a design of
static mixer reaction apparatus that can realize the aforementioned manufacturing method. The method of the present invention increases the selectivity of the
alkylation reaction to give the
alkylation product a relatively high
octane number and further increase the product yield. Also, the manufacturing operation is simplified, and the cost can be reduced. This method is an
environmentally friendly method that will not pollute the environment.