面向电网互动的绿电转氨单元变工况特性和互动能力评估研究  

Research on Variable Condition Characteristics and Interaction Capability of Power-to-ammonia Unit in the Electricity-hydrogen Interaction Context

作　　者：杨馥源 田雪沁 余潜跃 郑彤 戈阳阳 孙立 YANG Fuyuan;TIAN Xueqin;YU Qianyue;ZHENG Tong;GE Yangyang;Sun LI(Sate Grid Economic and Technological Research Institute Co.,Ltd.,Changping District,Beijing 102209,China;National Engineering Research Center of Power Generation Control and Safety(School of Energy and Environment,Southeast University),Nanjing 210096,Jiangsu Province,China;Electric Power Research Institute of State Grid Liaoning Electric Power Supply Co.,Ltd.,Shenyang 110003,Liaoning Province,China)

机构地区：[1]国网经济技术研究院有限公司,北京市昌平区102209 [2]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 [3]国网辽宁省电力有限公司电力科学研究院,辽宁省沈阳市110003

出　　处：《中国电机工程学报》2024年第S01期180-190,共11页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家电网公司科技项目(5400-202328240A-1-1-ZN)。

摘　　要：电氢可逆技术能够有效利用现有的氢能储备实现能源之间的互济互补,是电力应急保供中不可缺少的环节。该文以绿电转氨单元为研究对象,从反应平衡移动和设备工况波动两维度研究电氢可逆应用场景下,工厂中氢源逆向分流对绿电转氨单元的产量产率、换热器面积和压缩机功率等重要技术指标的影响。研究表明:反应平衡方面,当氢源逆向分流率增至5%时,反应器中的氨产率下降为基础工况下的95.99%,氮元素的转化率由33.81%下降为9.82%,反应平衡产生一定程度的逆向移动;设备工况方面,氢源波动将改变工艺流程中的合成气循环流量,需对工艺流程中的设备采取针对性的调控以维持生产稳定。以年产7.5万t的绿电转氨单元为例,可承担的最大氢源分流率为5%,该单元可支撑电网的最大发电功率为1418.39 kW。若能在氢源分流时,按需增加提纯设备的冷却剂用量,单元可承担更多的氢源分流量。The reversible technology of electric hydrogen can effectively utilize the existing hydrogen energy reserves to realize the mutual complementing of energy sources,which is an indispensable link in the emergency power supply.In this paper,power to ammonia unit is chosen as the research object,from the two dimensions of reaction balance movement and equipment operating condition fluctuation.The reversible application scenario of hydrogen source in the factory on the yield of power to ammonia unit,heat exchanger area and compressor power and other important technical indicators are studied.The results show that in terms of reaction equilibrium,when the reverse flow rate of hydrogen source increases to 5%,the ammonia yield in the reactor decreases to 95.99%and the nitrogen conversion rate decreases from 33.81%to 9.82%.The reaction equilibrium produces a certain degree of reverse movement.In terms of equipment conditions,hydrogen source fluctuation will change the syngas circulation flow in the process flow,and it is necessary to adopt targeted regulation on the equipment in the process flow to maintain the stability of production.Taking power to ammonia unit with an annual output of 75000 tons as an example,the maximum hydrogen source diversion rate that can be borne is 5%,and the maximum power generation power of the unit can support the grid is 1418.39 kW.If the coolant amount of the purification equipment can be increased as needed when the hydrogen source is divided,the unit can bear more hydrogen source flow.

关 键 词：电氢可逆 绿电转氨 氢源波动 电力保供 变工况特性 

分 类 号：TK91[动力工程及工程热物理]