Experimental Investigation of the Effects of Helical Roof on the Performance of Stairmand High Efficiency Cyclone

Abstract

Cost-effectiveness of a standard and a modified Stairmand high-efficiency type cyclone was compared at various inlet gas velocities. The modified design was obtained by replacing the roof of the standard design with a helical roof. Experiments were conducted by both standard and helical roof designs at the same operating conditions. Results showed that helical roof leads to reduced pressure drop in cyclones while having a negative impact on particle collection efficiency. Reductions in pressure drop can reach up to 30%, while particle collection efficiency is reduced by up to 8% simultaneously. Overall, the treatment cost of a cyclone separator can be reduced by 14.1–20.8%. Results indicated that helical roof design cyclones can be used to reduce overall treatment cost by cyclone separators.

Multiobjective Optimization of Spiral Guide Vanes for Boosting Separation Performance of Cyclone Separators

“…Geometric Structure. The cyclone separator used in this study is based on the flat-roof (FR) cyclone separator 25 and the spiral-roof (SR) cyclone separator, 18 with a main body diameter of 300 mm, as shown in Figure 1. At the same time, 3D printing technology was used to print the spiral guide vanes according to the model structure size, and tests were conducted in the D300 cyclone separator.…”

“…The tangential speed of the spiral-roof separator is reduced, and the radial speed is increased, which is not conducive to particle separation. Karadeniz and Demir also conducted experimental studies on flat-roof and spiral-roof separators. It was found that the efficiency of the spiral-roof separator was reduced, but the pressure drop was reduced by more than 30%.…”