Academician Ni Weidou: Coal-based polygeneration is a development direction of energy in line with national conditions

"Coal is now and will continue to be China's main energy source. The proportion of coal used for power generation will increase in the future. Solving the problem of clean and efficient use of coal is the key to China's development of a low-carbon economy." December 18, in " Jiufeng-2010 National Low-carbon Technology Innovation Forum, the Chinese Academy of Engineering academician Ni Weidou said that the development of clean and efficient use of coal should be enhanced. Coal-based polygeneration is a direction of energy development in line with China's national conditions.

Ni Weidou said that from now until 2050, China’s coal use accounted for about 40% of all energy, and in the 40 years China will use at least 100 billion tons. How to use 100 billion tons of coal and how to reduce emissions is a major problem faced by energy workers in China. There must be a very careful plan and arrangement.

The polygeneration energy system with coal gasification as the core (coal-based polygeneration) uses coal, residual oil or petroleum coke as raw materials, and then becomes syngas (CO+H2) after gasification. After purification, it can be used to realize electricity, chemicals, Cogeneration of heat and gas, that is, simultaneous generation of electricity, co-production of a variety of high-value-added chemical products, such as liquid fuels, city gas and so on. Clean coal power generation technology is called integrated gasification combined cycle power generation and is a combination of clean coal gasification technology and efficient combined cycle technology.

Ni Weidou believes that coal-based polygeneration breaks the boundary between different industries, and fully integrates and optimizes the material flow and energy flow in production such as power generation, chemical industry, and metallurgy according to the principle of system optimization, changes the traditional process, and realizes Step-by-step utilization of hydrogen-carbon ratio, pressure, temperature, material, and fuel "quality", etc., to achieve the optimal energy, environmental, and economic benefits of the system. Coal-based polygeneration is one of the energy development directions in line with China's national conditions. It is a combination of coal-based special conditions and an important road for new industrialization. It is an important strategic direction to solve the problems of China's energy, environment, liquid fuel shortage and other issues. Academician Ni Weidou said that coal-based polygeneration is a sustainable, technologically successful inheritance and feasibility, and has good economic and environmental performance. It is a way to achieve CO2 capture and burial in the future. It is for China and even the world. Both have very important strategic significance.

At the “Jiufeng-2010 National Low-carbon Technology Innovation Forum” co-sponsored by China Low-carbon Economic Development Promotion Association and Guangdong Jiufeng Group, officials, experts, and entrepreneurs responded to low-carbon industries, green buildings, and transportation energy-saving technologies. , Green Finance promotes the development and utilization of low-carbon technologies such as technological innovation, new energy, electric vehicles, and smart grids, participation in technological innovation of low-carbon technologies in energy conservation and emission reduction, low-carbon agricultural development strategies and agricultural environmental technologies, and low-carbon technologies. Ecological cities and other topics were discussed.