The invention discloses a method for producing 1,1,3-trichloroacetone, belonging to the technical field of chemical product preparation. The method comprises the following steps: with
acetone as a
raw material, synthesizing 1,1,3-trichloroacetone in an
inert solvent through photocatalytic chlorination, recovering a
solvent,
acetone, monochloroacetone, 1,1-dichloroacetone and other light components from a chlorination solution in a rectification manner, separating the intermediate component 1,3-dichloroacetone from 1,1,3-trichloroacetone in a
simulated moving bed filled with an adsorbent to obtain 1,1,3-trichloroacetone, conducting eluting with a
desorption agent to obtain a
desorption solution containing 1,3-dichloroacetone and 1,1,3-trichloroacetone, distilling the
desorption solution to remove the
solvent, and then returning the desorption solution to a chlorination kettle for indiscriminate application. The method has the characteristics of mild
reaction conditions, high
reaction rate,
high selectivity of 1,1,3-trichloroacetone, low
wastewater discharge amount, environment-friendly process and the like.