| 摘要 |
A method for production of diaryl carbonate comprising: (a) introducing reactants to a first reactive distillation column (C21); (b) recovering a first top stream (stream 5), a first bottom stream (stream 6), and a first side stream (stream 13); (c) introducing the first bottom stream (stream 6) into a second reactive distillation column (C32) without passing through another reactive distillation column; (c1) recovering from the second reactive distillation column (C32) a second bottom stream (stream 15), and a second top stream (stream 16); (d) introducing the first side stream (stream 13) to a first rectification column (C81); (d1) recovering from the first rectification column (C81) a third bottom stream (stream 12) and a third top stream (stream 14); (e) introducing the first top stream (stream 5) into a second rectification column (C41); and (e1) recovering from the second rectification column (C41) a fourth top stream (stream 7) and a fourth bottom stream (stream 8). The apparatus comprising a first reactive distillation column (C21), a second reactive distillation column (C32), a first rectification column (C81), a second rectification column (C41), and a plurality of lines for transporting reactant and product streams is also claimed. |
