liquid reactant i e water in line 113 pump 105 is operated to pump the liquid reactant water through line 121 and to build pressure and feed hsd 140 providing a controlled flow throughout high shear hsd 140 and high shear system 100 optionally a gaseous chlorinating agent such as chlorine gas may be fed into line 121 through line 111 in such an embodiment an additional high shear device may be incorporated to dissolve the gaseous chlorinating agent into solution in a preferred embodiment olefin gas 122 may continuously be fed into the liquid stream 112 to form high shear feed stream 113 e g gas liquid stream in high shear device 140 liquid i e water chlorinating agent and the olefin vapor are highly dispersed such that nanobubbles and or microbubbles of olefin are formed for superior dissolution of olefin vapor into solution once dispersed the dispersion may exit high shear device 140 at high shear outlet line 118 stream 118 may optionally enter fluidized or fixed bed 142 in lieu of a slurry catalyst process however in a slurry catalyst embodiment high shear outlet stream 118 may directly enter hydration reactor 110 for hydration the reaction stream may be maintained at the specified reaction temperature using cooling coils in the reactor 110 to maintain reaction temperature chlorination products e g chlorohydrins may be withdrawn at product stream 116 in an exemplary embodiment the high shear device comprises a commercial disperser such as ika u00ae model dr 2000 4.