Discussions on the heat transfer performance of the indirect pyrolysis plant using CFD modeling

Abstract Pyrolysis is a pathway for hydrogen reproduction from sewage sludge. The critical problem in the indirect pyrolysis process lower heat transfer performance furnace. circulation of media controls pyrolizer (e.g., carriers (HCs) form alumina balls), which essential determining and ultimately yield. temperature HCs amount yield are low because required vessel not satisfied. This study investigated relationship between operating conditions HC profile to determine optimum sufficient heating. We discuss aspects achieve more effective operation using inputs. Using computational fluid dynamics simulation, we assessed effect inlet gas temperature, flow rate, furnace structure on performance. validated our model test results demonstration plant. observed that by increasing hot 51 °C, loss was reduced 2,170 MJ/h, thermal efficiency entire plant improved 5.46%. When number hot-gas inlets split, did change, but dispersion small. implied tar generation, including liquid substances, prevented. At 600°C, cold 81.2 LHV%.