2013 Volume 8 Issue 1 Pages 190-208
Gasification has played an important role in the development of clean coal technology. To seek appropriate operations for synthesis gas (syngas) formation, the present study developed an optimization analysis procedure of the gasification process in an entrained-flow gasifier through the application of the Taguchi method in conjunction with a simulation method. The effects of the wall temperature, O/F ratio, feed type and pressure on the performance of cold gas efficiency (CGE) were investigated. An orthogonal array was used to arrange the CFD experimental plan for the above factors. Analysis of the signal-to-noise ratio (S/N ratio) was used to evaluate the calculation results. Results suggest that the optimum conditions are a wall temperature of 1500 K, an O/F ratio of 0.6, coal feed type and a gasifier pressure of 3 MPa. The influence strength order of each control condition is feed type>O/F ratio>wall temperature>pressure. The value of the S/N ratio for the optimum case is 13.40, which is the highest value compared to other cases. Findings show that the Taguchi method is able to investigate the gasification process well and can therefore be applied in future studies conducted in various fields.
