Optimization of the NOx Reduction Condition in the Combustion Furnace for the Combustion of “Heavy-Oil – NH3 System” Using CFD

Yuya Yoshizuru*, Takeshi Suemasu, Masayuki Nishio, UBE Industries, Japan; Ryuichi Murai, Fumiteru Akamatsu, Osaka University, Japan

15th Annual NH3 Fuel Conference, Pittsburgh, PA, October 31, 2018
NH3 Energy+ Topical Conference at the AIChE Annual Meeting

ABSTRACT

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%).

Read the abstract at the AIChE website.

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RELATED NH3 FUEL CONFERENCE PAPERS

2018: Simulation Analysis of NH3 Mixed Combustion in Clinker Manufacturing Process
2018: Evaluation of the Cement Clinker Fired in the Combustion Furnace of Heavy-Oil and NH3

LINKS

UBE Industries
Combustion Engineering Laboratory, Osaka University
Learn more about the 2018 NH3 Fuel Conference

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