On March 16, at the "2023 China Cement Industry Summit" hosted by China Cement Network, Zhu Weiyuan, a researcher of Xiamen University, gave a brilliant speech on "Carbon Reduction Application Case of Hydrogen (Ammonia) Fuel in Cement Industry".
Zhu Weiyuan said that the substitution of pure hydrogen for coal has limitations. Currently, the difficulty in the application of hydrogen energy lies in the storage and transportation links, mainly due to the low density of hydrogen; the low boiling point, the liquefaction temperature of 250 degrees below zero, and the huge energy consumption; the fast combustion speed of hydrogen, the high temperature, flammable and explosive, etc. Carbon emissions from cement manufacturing can be replaced by carbon-free synthetic fuel green ammonia NH3 ; carbon emissions from cement raw materials can be stored and neutralized by CCUS technology.
Zhu Weiyuan said that ammonia can be used to store hydrogen, because ammonia does not contain carbon, and ammonia is easy to liquefy; ammonia contains many hydrogen elements and has high energy density; ammonia storage and transportation technology is very mature, human beings have used ammonia for more than 100 years, in terms of equipment, regulations, operational norms and hazard disposal methods are mature. What is the economy of
green ammonia replacing coal? Zhu Weiyuan said that it can be seen from three aspects: the increased cost, the reduced cost and the compensation mechanism. As the cost of green electricity gradually declines, the cost of green ammonia is also declining. At the same time, the state's support for green hydrogen, synthetic ammonia and other industries is also growing, and China is expected to introduce a subsidy policy this year. Zhu Weiyuan believes that within 10 years, the price of green ammonia is likely to be close to coal.
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