The oxy-fuel process is a promising way to reduce carbon dioxide emissions in power plants. Researchers are studying how to optimize this process for better performance. They found that oxy-fuel combustion can significantly reduce nitrogen oxide emissions compared to traditional methods. By burning at high temperatures, they can further reduce emissions and improve efficiency. Additionally, using oxygen lean combustion can increase efficiency and benefit synthesis gas production. This research shows that oxy-fuel technology has the potential to make power plants more environmentally friendly and efficient.