基于绿电转氨的综合能源生产单元经济性与碳足迹评估  

Evaluation of Economy and Carbon Footprint of Integrated Energy Production Unit Based on Green Power to Ammonia

作　　者：孙立 余潜跃 张玉琼 赵强 郝勇生[1] SUN Li;YU Qianyue;ZHANG Yuqiong;ZHAO Qiang;HAO Yongsheng(National Engineering Research Center of Power Generation Control and Safety(School of Energy and Environment,Southeast University),Nanjing 210096,Jiangsu Province,China;China Electric Power Research Institute,Haidian District,Beijing 100192,China)

机构地区：[1]大型发电装备安全运行与智能测控国家工程研究中心(东南大学能源与环境学院),江苏省南京市210096 [2]中国电力科学研究院有限公司,北京市海淀区100192

出　　处：《中国电机工程学报》2025年第7期2567-2578,I0010,共13页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家电网有限公司科技项目(1400-202235243A-1-1-ZN)。

摘　　要：基于电转氨(power to ammonia,P2A)的综合能源生产单元(integrated energy production unit,IEPU)通过耦合绿电制氢和哈伯反应合成氨工艺,为农业、工业和制造业等行业提供绿氨,对促进可再生能源消纳及氢能储运等行业发展具有重要的意义。为定量评价IEPU的能效、技术经济性和降碳潜力,该文基于Aspen Plus建立碱性电解水制氢、合成氨及换热网络等关键过程模型,对IEPU进行系统仿真,定量评价各设备全流程之间的能量流、(火用)流、碳足迹及绿氨的平准化成本。热经济性能效评估表明,IEPU系统的设计工况整体能量效率为39.47%,(火用)效率为26.51%。技术经济性评估表明,当可再生能源电价为0.204元/(kW·h),年利用小时数达到6000时,IEPU系统的绿氨成本约为传统煤制氨生产工艺的1.5倍。基于全生命周期碳足迹评价的结果表明,水、核、风和光伏4种能源驱动的IEPU系统碳足迹在0.20~2.39 kg CO_(2.eq)/kg NH3间波动。结果可用于指导氨基IEPU的规划与设计。The integrated energy production unit(IEPU)based on power to ammonia(P2A)technology couples green hydrogen production from renewable electricity and the Haber-Bosch ammonia synthesis process.This system provides green ammonia for various sectors,including agriculture,industry,and manufacturing.Its significance lies in advancing the integration of renewable energy sources and the storage and transportation of hydrogen.To quantitatively assess the energy efficiency,techno-economic feasibility,and carbon reduction potential of the IEPU,this study employs Aspen Plus to establish process models for key operations such as electrolytic hydrogen production,ammonia synthesis,and heat exchange networks.The IEPU is subject to comprehensive system simulation,facilitating quantitative evaluations of energy flows,exergy flows,carbon footprints,and the levelized cost of green ammonia production among various equipment components.Thermal-economic performance evaluation reveals that the overall energy efficiency of the IEPU system under design conditions is 39.47%,with an exergy efficiency of 26.51%.Techno-economic assessment indicates that with a renewable energy electricity price of 0.204 RMB/kWh and an annual utilization of 6000 hours,the cost of green ammonia produced by the IEPU system is approximately 1.5 times that of the traditional coal-based ammonia production process.Results from the life cycle carbon footprint assessment,based on water,nuclear,wind,and photovoltaic energy-driven IEPU systems,demonstrate carbon footprints ranging from 0.20 to 2.39 kg CO_(2.eq)/kg NH3.These findings provide valuable insights for the planning and design of ammonia-based IEPU systems.

关 键 词：电转氨 综合能源生产单元 能效分析 技术经济性评估 全生命周期评估 

分 类 号：TK9[动力工程及工程热物理]