Objective Guangdong Province is one of the earliest provinces in China to build and develop nuclear power, with the largest operational nuclear power capacity in China, but the utilization mode is mainly for power generation, and the comprehensive utilization of nuclear energy are relatively few. This article conducts research on the paths and typical scenarios of the comprehensive utilization of nuclear energy in Guangdong Province, providing development ideas and suggestions for the comprehensive utilization of nuclear energy in Guangdong.

Method Focusing on the three main ways of comprehensive utilization of nuclear energy, namely industrial heating, hydrogen production, and seawater desalination, the advantages and disadvantages of each technical path were analyzed and compared. Based on the current situation and planning of nuclear power development in Guangdong Province, considering the nuclear power plants that are currently in operation, under construction or planned, combined with the application scenarios around the power plants, and appropriate comprehensive utilization schemes of nuclear energy were proposed. The economic and environmental benefits of the schemes were also analyzed.

Result In terms of industrial heating, the distance from Huizhou Taipingling Nuclear Power Plant and Shanwei Lufeng Nuclear Power Plant to the local large-scale petrochemical industrial parks both exceed 40 km, making it difficult and uneconomical to adopt combined heat and power generation technology. It is recommended to adopt small reactor heating solutions, with a heating cost of approximately 45 yuan/GJ. Regarding hydrogen production, the levelized cost of nuclear heat hydrogen production is lower than that of nuclear power hydrogen production but slightly higher than that of coal gasification and methane reforming hydrogen production. In terms of seawater desalination, the cost of desalinated water by reverse osmosis method is about 3.86yuan /m³, of which depreciation of initial investment accounts for the highest proportion of water production cost, about 30%, followed by electricity cost, about 27%.

Conclusion It is recommended that in the long term, Huizhou or Shanwei adopt the small reactor heating scheme to provide heat for the local petrochemical industrial parks. It is recommended that when promoting the preliminary work of the fourth-generation high - temperature gas - cooled reactor project of Maoming Green Energy Project, a hydrogen - production coupling scheme be considered to create a demonstration of the coupling between the high - temperature gas - cooled reactor and the petrochemical industry. After all units of the Lufeng Nuclear Power Plant are fully operational, reverse osmosis seawater desalination technology can be used to provide production and domestic water for the power plant.