(542e) Optimization of the NOx Reduction Condition in the Combustion Furnace for the Combustion of "Heavy-Oil - NH3 System" Using CFD

In late years the discharge of the CO₂ became the very big problem. The combustion of the fossil fuel in particular exhausts much CO₂. Our project team (SIP) is intended to reduce CO₂ by using NH₃ (10%~30%) in substitution for heavy oil. The 'SIP energy carriers' was launched in 2014 (SIP: Strategic Innovation Promotion Program). Ammonia direct combustion team was formed. We conducted a co-research program with Osaka University in this project. We performed experiment of heavy oil - NH₃ mixed combustion in the 10kW furnace. As the results, we obtained much experimental data. When we were combusted NH₃ and heavy-oil, a large quantity of NOx is exhausted. We need to conduct that out under many different conditions for NOx reduction (for example, temperature, flow rate and so on.). However, it is impossible to perform it in limited time. Therefore I found some conditions to reduce NOx using CFD. Furthermore, we introduce some conditions to optimize NOx reduction. The combustion mechanism compared the model using the detailed chemical reaction and the simplification reaction mechanism with the experiment. As a result, we became able to be combusted NH₃ (30%) under a NOx condition same as heavy-oil (100%).