| abstract |
The invention relates to a clean production method for improving the reaction yield of 2, 4-dichloroacetophenone, which comprises the following steps: step 1: separating and extracting m-dichlorobenzene by using chlorinated aromatic hydrocarbon waste; step 2: preparing a crude product of 2, 4-dichloroacetophenone; and step 3: separating and purifying the 2, 4-dichloroacetophenone crude product to obtain the dichloroacetophenone product. The invention has the advantages that: the invention adopts the technical proposal that the material charging ratio, the reaction temperature, the reaction time, different Lewis acids and AlCl are adopted 3 The influence of the dosage on the product yield finds out the optimal reaction condition to ensure the purity of the productThe degree and the yield are ensured, the product purity can reach more than 99.5 percent, and the product yield can reach more than 65 percent. |