On January 24, the national energy group held a technical conference in Beijing to officially release the mixed ammonia combustion technology of coal-fired boilers. The technology has successfully passed the technical review organized by China Electrical Engineering Society, Petrochina Company Limited(601857) and Chemical Industry Federation.
Experts agreed that it is the first time in the world that the technology has achieved 35% of the heat of mixed ammonia combustion in 40 MW coal-fired boilers. The project provides a feasible technical development direction for China’s coal-fired units to reduce carbon dioxide emission, and plays a significant role in promoting China’s goal of carbon peak and carbon neutralization. It is suggested to carry out industrial demonstration on coal-fired boilers with larger capacity.
Carbon dioxide emissions from coal-fired power generation are huge, accounting for about 34% of China’s total carbon dioxide emissions. Therefore, reducing carbon dioxide emissions from coal-fired power generation is the key to China’s successful realization of the goal of carbon peak and carbon neutralization.
Compared with hydrogen, ammonia has high volumetric energy density, low storage cost per unit energy, mature and perfect infrastructure and technology for large-scale storage and transportation. It is a clean energy carrier and low-carbon fuel with great development potential.
The relevant person in charge of Yantai Longyuan Power Technology Co.Ltd(300105) (hereinafter referred to as Yantai Longyuan Power Technology Co.Ltd(300105) ) under the national energy group said that considering the limited capacity of renewable energy to produce ammonia and can not completely replace coal in the short term, it is a more feasible technical development direction to reduce the carbon dioxide emission of coal-fired units by using the mixed combustion of ammonia and coal in boilers.
However, at present, the global research on ammonia as a low-carbon fuel is still in its infancy, and all of them focus on small-scale research in the laboratory, and the feasibility of large-scale use of ammonia as a low-carbon fuel has not been verified at the industrial scale.
Through the experimental research on the mechanism of ammonia coal mixed combustion and the industrial experimental research on mixed ammonia combustion of 40mW coal-fired boiler, the national energy group has verified the feasibility of mixed ammonia combustion of coal-fired boiler, developed the mixed ammonia combustion technology of coal-fired boiler, and explored an effective technical path for China’s coal-fired units to achieve significant carbon emission reduction in the future, It will strongly support the smooth implementation of the national carbon peak and carbon neutralization goal.
\u3000\u3000 “This technical achievement has realized the industrial application of mixed ammonia combustion on 40 MW coal-fired boiler with a 35% mixed combustion ratio for the first time, developed a flexibly adjustable mixed ammonia low nitrogen pulverized coal burner, equipped with a multivariable adjustable ammonia supply system, completed the overall research on the mixed ammonia coal combustion technology, and provided basic data and technology for the industrial application of mixed ammonia combustion system of higher-grade coal-fired boiler Scheme. ” The relevant person in charge of Yantai Longyuan Power Technology Co.Ltd(300105) said.
The research has preliminarily shown that the mixed ammonia combustion of coal-fired boiler has little impact on the operation of the unit, and the fuel burnout and NOx emission are better than the coal-fired working conditions, indicating that the existing coal-fired unit only needs to carry out the transformation of the mixed ammonia combustion system, while the main structure and heating surface of the boiler do not need to be greatly modified to realize the mixed ammonia combustion and achieve the goal of greatly reducing carbon dioxide emission.
The expert group believes that this technical achievement will change the traditional coal-fired power generation mode with high carbon emissions, gradually realize the substitution of fossil fuels, significantly reduce the carbon emissions of coal-fired units, explore an effective technical path for China’s coal-fired units to achieve significant carbon emission reduction in the future, and promote the efficient, clean and efficient utilization of fossil energy in China, The realization of the national “double carbon” goal provides strong technical support.
Huang Qili, academician of the Chinese Academy of engineering, said that the plasma ignition and stable combustion technology independently developed by the first completion unit Yantai Longyuan Power Technology Co.Ltd(300105) of the project 20 years ago was rapidly popularized across the country after passing the technical appraisal, which saved a lot of boiler ignition and low load stable combustion oil, and made a great contribution to the oil saving of coal-fired units in China. The national energy group has bravely assumed social responsibility and led the way of strengthening enterprises through scientific and technological innovation. It has developed a high proportion of mixed ammonia combustion technology for the first time in the world and is in the forefront of the world.
