On the basis of demonstrating the disadvantages
of a slow bromination process of IIR, this work systemically
investigated the effects of assistant solvents
and mixing intensity on the bromination reaction
process. It was found that higher dosage and polarity
of assistant solvent were both beneficial to obtain
faster bromination process with the premise of a nice
solubility of IIR in the solvent. In STR, the significant
effect of mixing intensity on the accelerated bromination
process was observed as that ts reduced remarkably
with increasing N. Hex. with 30% (by volume) DCM
as assistant solvent and N of 1100 r·min−1
were respectively
found as the suitable solvent combination and
mixing intensity in the STR, where xA1s of 80.2% and
Ss of 91.2% could be obtained in 5 min. In a RPB with
higher-intensity and higher-efficiency mixing than those
in STR, xA1s of 82.6% and Ss of 91.9% could be obtained
in 2 min. The usage of assistant solvent and RPB reactor
can be concluded as a promising approach to
intensify the industrial bromination process of IIR