Test and performance optimization of nozzle inclination angle and swirl combustor in a low-tar biomass gasifier: a biomass power generation system perspective

A nozzle inclination angle and swirl combustor inside the low-tar biomass (LTB) gasifier reactor were tested optimized to evaluate these effects on tar reduction design tar-free producer gas. The process is mainly based concept of a swirling flow created by angle, with 55° radial line, allowing good mixing between pyrolysis gases gasifying agents. separate has large internal annular reverses zones help flow, resulting in homogenized temperature providing longer residence time; both have positive effect combustion mixed air-pyrolysis thermal cracking partial oxidation zone. Recircling ratio (RR) degree volatiles are two optimization parameters for evaluating performance NIA combustor. result observed that outstanding occurred this novel system. About 86.5 12.8% compounds broken down zone using NIA, respectively; gas outlet having concentration less than 1%. results reveal lower recycling (recycle gas/gasifying air) higher perform better gasification. Finally, system generated at an extremely low level 7.4 mg/Nm3 moisture content 9% appeared heating value 4.6–5.1 MJ/Nm3. This might be directly coupled engine or turbine power generation.