China Has Built the World's Largest Clean Coal Power Supply System 20 Nov 2018
In order to further improve the clean and efficient development level of coal power, China's coal power industry has vigorously promoted ultra-low emission and energy-saving renovation in recent years. As of the end of 2017, the coal-fired generating units that have reached the ultra-low emission limit have reached 700 million kilowatts, accounting for 71% of all coal-fired power plants; the cumulative energy-saving transformation of coal-fired power units has reached 604 million kilowatts. China has built the world's largest clean coal power supply system.
Over the past decades, China has eliminated and shut down more than 110 million kilowatts of small thermal power units with high pollution and high energy consumption. The installed capacity of coal power has been greatly optimized, and the proportion of clean, efficient and advanced coal-fired power units has increased significantly. The coal-fired power units newly put into production in recent years are basically advanced units with large capacity, high parameters, high efficiency, high water saving and ultra-low emission.
The world's first 600,000-kilowatt supercritical coal-fired unit, 1 million-kilowatt ultra-supercritical unit, and 600,000-kilowatt supercritical circulating fluidized bed unit were all put into commercial operation in China. According to the National Energy Administration, as of the end of 2017, the proportion of China's 600,000 kW and above coal-fired power units has increased to about 45%.
According to the statistics of the China Electricity Council, the total emissions of sulfur dioxide, nitrogen oxides and soot from China's power industry have dropped from a peak of 29.5 million tons to 2.6 million tons in 2017, a drop of 92%. Coal consumption for power supply fell to 312 grams of standard coal / kWh in 2017.
At present, there are still 150 million kilowatts of coal-fired power units below 300,000 kilowatts. These units are responsible for heating or power grid support, and more powerful measures are needed to promote the phase-out of non-standard coal-fired power units.
In the next step, China will continue to phase out the backward coal-fired units below 300,000 kilowatts that are not up to standard such as environmental protection, energy consumption and safety. The ultra-low emission conversion of coal-fired power units with conditions in the central region will be completed in 2018, and the western region will be completed in 2020.