Abstract:
Based on analysing mixing mechanism, the authors have proposed the fundamental approaches of improving micromixing performance in tubular reactors. They are reduction in the initial scale of aggregates of the feeding fluid and increase in the rate of local turbulent energy dissipation by inserting some elements. And by using azo-coupling chemical reactions the authors have conducted test on micromixing characteristics in empty tube, ribbed tube and jet mixers. The experimental investigation is also made in tube filled with Kenics static mixer, ball tubulent promotor, perforated plate. It is discovered that tube inserts and jet mixers can remarkably improve micromixing performance. In particular, Kenics static mixer, perforated plate and jet mixer with contracted mouth in mixing tube are recommended for industrial use.