摘要
在双碳背景下,电解水制氢行业迎来了新一轮发展机遇。质子交换膜(PEM)电解水制氢是一种新兴的制氢技术,其能耗是氢能行业关心的重要问题。基于中国石化中原油田500 m^(3)/h的PEM制氢及增压系统,构建了制氢及增压系统数值仿真模型,仿真结果与实际运行数据相比,平均相对误差为-0.16%,具有较好准确度;分析系统中各工艺单元、主要设备的能耗特征,发现PEM电解槽、隔膜压缩机是主要能耗设备,分别约占整体系统能耗91.1%、6.4%;PEM电解槽、制氢及增压系统能耗,随着运行电流增大而分别呈现出近似二次非线性单调上升、“U”字型特征。采用“集中冷却+液驱压缩”综合工艺改进措施后,较原工艺平均可降低功耗33.9 kW、节约能耗3.7%。因此,加强低成本高效长寿命PEM电解槽、氢气压缩机研制,强化PEM制氢项目整体集成工艺优化设计等是降低PEM制氢能耗的重要途径。
Under the dual carbon background,the water electrolysis hydrogen production industry has ushered in a new round of development opportunities.Proton exchange membrane water electrolysis hydrogen production is an emerging hydrogen production technology,and its energy consumption is a concern for the hydrogen industry.Based on the 500 m^(3)/h PEM hydrogen production and pressurization system of Sinopec Zhongyuan Oilfield,a numerical simulation model of the hydrogen production and pressurization system is constructed.The average relative error of the simulation results compared to the actual operating data is-0.16%,indicating good accuracy.The energy consumption characteristics of various process units and main equipment within the system are analyzed.It is found that the PEM electrolyzer and the diaphragm compressor are the primary energy-consuming devices,accounting for approximately 91.1%and 6.4%of the overall system energy consumption,respectively.As the operating current increases,the PEM electrolyzer and the pressurization system exhibit near-quadratic nonlinear monotonic increases and a"U"-shaped characteristic,respectively.After the application of the"centralized cooling+liquid-driven compression"integrated process improvement measure,the power consumption is reduced by an average of 33.9 kW and energy consumption is saved by 3.7%compared to the original process.Therefore,strengthening the development of low-cost,efficient,and long-life PEM electrolyzers and hydrogen compressors,as well as enhancing the optimization of the overall integrated process design for PEM hydrogen production projects,are important approaches to reducing the energy consumption of PEM hydrogen production.
作者
李桂亮
张文昌
焦玉清
刘家敏
李智慧
张盈宁
王贺佳
LI Guiliang;ZHANG Wenchang;JIAO Yuqing;LIU Jiamin;LI Zhihui;ZHANG Yingning;WANG Hejia(Zhongyuan Oilfield Branch,Sinopec;Henan Hydrogen Energy and Storage Engineering Technology Research Center;Henan Green Hydrogen Production,Storage,Transportation and Equipment Pilot Base;Puyang Hydrogen Energy Industry Research Institute;Puyang Zhongyuan Laboratory;Puyang Key Laboratory of Hydrogen Energy and Carbon Neutrality)
出处
《油气田地面工程》
2025年第12期1-8,共8页
Oil-Gas Field Surface Engineering
基金
河南省产业研发联合基金项目“大型质子交换膜电解水制氢示范及规模化应用”、中国石化氢能重大专项“兆瓦级可再生电力电解水制氢示范”(121026)。
关键词
氢能
PEM制氢
能耗特征
工艺优化
节能降耗
hydrogen energy
PEM hydrogen production
energy consumption characteristics
process optimization
energy conservation and consumption reduction
