National Science and Technology Project ‘Pulverized Coal Combustion with Ultra-low NOx Emissions Technology” Launched

Recently, Guodian Inner Mongolia Dongsheng Thermal Power Co., Ltd. under China Energy launched a pilot project for 330MW power plant boiler with ultra-low NOx emissions as part of the national key research and development (R&D) program “pulverized coal combustion with ultra-low NOx emissions technology.”

With China Guodian Corporation playing the lead role, China Energy’s “pulverized coal combustion with ultra-low NOx emissions technology” R&D project is jointly undertaken by 17 research institutes including Guodian Technology and Environment Group, and implemented by Guodian Inner Mongolia Dongsheng Thermal Power Co., Ltd. The project is of great significance to promoting the industrial application of clean and efficient coal utilization technology, achieving near-zero emissions of boilers, and lifting China’s pulverized coal-fired boiler denitrification technology and equipment to world-advanced level.

The project creatively integrates the controllable high temperature preheating and high-efficiency combustion technology with ultra-low NOx emissions and the ammonia injection technology for high temperature main combustion zone of furnace to reduce NOx by forming a reductive atmosphere in the high temperature main combustion zone through reductive products resulting from high temperature preheating as well as deep air classification technology. Embodying the design concept of “staged combustion of air and fuel, rapid ignition, and deep reduction of NOx,” the project is aimed at restraining the formation of NOx and strengthening the ignition and burnout of pulverized coal by deeply reducing nitrogen oxides and improving combustion efficiency, so as to achieve both boiler energy saving and NOx emission reduction.