| abstract |
The present invention relates to a preparation method of acrylonitrile dimer, the preparation method comprising: feeding acrylonitrile monomer, non-polar solvent, alcohol solvent and phosphorus-based catalyst into a dimerization reactor to carry out dimerization reaction, and The reaction product is fed into a distillation column; acrylonitrile monomer, the non-polar solvent and the alcohol solvent are fed from the distillation column into the dimerization reactor, and the acrylonitrile dimer is and feeding the phosphorus-based catalyst into an extraction device; deactivating the phosphorus-based catalyst by oxidizing the phosphorus-based catalyst by feeding water containing an acid component into the extraction device; and separating the deactivation The latter phosphorus-based catalyst and the acrylonitrile dimer. |