Ultra-supercritical coal-fired power generation technology is an advanced and efficient power generation technology. Its thermal efficiency is about 4 times higher than that of supercritical units, and its advantages are even more obvious compared with conventional coal-fired power generation units. However, in 2002, when the "Research and Development and Application of Ultra-Supercritical Coal-fired Power Generation Technology" project was established, my country had not even started construction of demonstration projects for supercritical units, and only five power plants in Germany, Denmark, and Japan were put into operation internationally. . Should we wait for the successful demonstration of domestic supercritical units and the maturity of international ultra-supercritical technology before considering my country's next-generation power technology, or should we conduct research ahead of time and use technology as the guide to promote the development of China's power industry?
Zhang Xiaolu, then director of the Science and Technology and Environmental Protection Department of the State Electric Power Company, and others secured the support of the Ministry of Science and Technology and decided to demonstrate the internationally advanced technology based on the high-temperature alloys that we can purchase and have mature commercial applications. Materials, researching the types and technical routes of ultra-supercritical technology in China, hoping to guide the research and development of new generation equipment in my country's power equipment industry and provide technical reserves for the industrial upgrading of my country's power industry.
More than 100 researchers from 23 units, including China Huaneng Group Corporation, China Power Investment Corporation, Harbin Boiler Factory, Dongfang Steam Turbine Co., Ltd., and National Power Station Combustion Engineering Technology Research Center, worked together to propose the first We have formulated the technical selection plan for the development of ultra-supercritical thermal power units in our country, completed the design and development of three different types of 1 million kilowatt ultra-supercritical boilers and steam turbines, the development of manufacturing software packages and research on material processing performance, and independently designed an ultra-supercritical power station. , independently commissioned 1 million kilowatt and 600,000 kilowatt units, applied for 17 national technology patents, and formed a complete foundation for the development of ultra-supercritical power stations in our country.
The technical reserves soon came in handy. Since 2003, my country's power industry has entered a period of rapid development. The annual installed capacity has rapidly increased from more than 10 million kilowatts per year in the past ten years to 50 million kilowatts and 60 million kilowatts, reaching about 100 million kilowatts in 2006 and 2007. By the end of 2007, the order quantity for domestically produced 600,000 kilowatt ultra-supercritical units reached more than 90 units, and the order quantity for 1 million kilowatt units also reached nearly 50 units. It is estimated that by 2010, my country will account for more than half of the world's million-kilowatt ultra-supercritical units.
Representatives from the World Bank found Zhang Xiaolu, who is already the deputy general manager of China Power Investment Corporation, and said that it seems that the most effective technology to reduce greenhouse gas and pollutant emissions from coal-fired power generation is ultra-supercritical technology, and plans to use a sum of money to support China in conducting research in this area. Zhang Xiaolu replied: "Thank you, we have crossed this stage."
On January 8, 2008, the Central Committee of the Communist Party of China and the State Council grandly held the National Science and Technology Awards Conference, sponsored by China Huaneng Group Corporation Undertaken, the ultra-supercritical coal-fired power generation technology jointly developed and applied in conjunction with relevant design, manufacturing, and application units won the first prize of the 2007 National Science and Technology Progress Award.
The energy-saving and environmental protection demonstration effect of this technology is very significant. As a demonstration project, the Huaneng Yuhuan Power Plant project was fully completed and put into operation in November 2007, becoming the world's largest ultra-supercritical thermal power plant with a capacity of one million kilowatts. . The project applies a large number of research results on this topic. Two 1 million kilowatt ultra-supercritical generator units (parameters 26.25MPa, 600℃/600℃) are the ultra-supercritical units with the highest parameters, largest capacity, and highest year-on-year efficiency in the world today. After actual operation, the efficiency is as high as 45.4, and the coal consumption for power supply is 283.2 g/kWh, which is 82.8 g/kWh lower than the national average coal consumption for power supply of 366 g/kWh in 2006. This greatly saves coal resources and reduces the emission of more than 500,000 tons of carbon dioxide every year. , more than 2,800 tons of sulfur dioxide, and about 2,000 tons of nitrogen oxides. It has internationally advanced energy consumption and environmental protection levels, and has huge prospects for corporate economic benefits and social and environmental benefits.
Coal currently used for power generation and heating accounts for about 50% of the country's total coal production, and the amount of pollutant emissions is also large. According to statistics, 90% of the national sulfur dioxide emissions are produced by coal power.
The research and development and application of million-kilowatt ultra-supercritical units are of great significance to the adjustment of my country's thermal power structure, energy conservation and consumption reduction, the construction of a resource-saving and environment-friendly society, and the sustainable development of the electric power industry.