The purpose of this study is to analyze the overall aspects of sulfur dioxide (SO2) and nitrogen oxides (NOx) removal from thermal power plants by the application of the Mitsui-BF process. For the first time, the research evaluates the efficiency and feasibility of the Mitsui-BF process in a 350 MW fuel oil-fired thermal power plant in comparison to the traditional SO2 and NOx removal process.

The analysis takes into account factors like process complexity, waste production, space requirements, feasibility of local production, the impact on the environment, and process efficiency.

Results show that for simultaneous removal of SO2 and NOx, the capital cost of the Mitsui-BF process is less than that of wet lime and limestone scrubbers and SCR-KHI. The problem is that the cost of the consumable sorbent and extra utility costs required for sulfur production add up to an increased LCO for the Mitsui-BF process. However, the MITSUI-BF process is more complex, but it has a lower requirement for water, which is an important consideration in areas where water resources are scarce. The Mitsui-BF process holds promise of efficiency, with 70% NOx removal, 90-98% SO2 removal for simultaneous mode and >85% NOx removal, 90-98% SO2 removal for separate mode. The process also generates solid waste, which can be reused or sold, thus offering a sustainable solution. This process offers potential for power plant operators interested in reducing emissions and improving environmental sustainability, and additional R&D in this area could optimize the process and help overcome any implementation challenges.