摘要
操作参数对由槽式太阳能集热器驱动的甲烷重整膜反应器的性能具有显著影响,本文采用响应曲面法对操作参数进行了优化。建立了反应器内多物理场耦合数值模型,分析了反应器内的物质传递和反应过程,探讨了关键参数对反应器性能的影响;采用中心复合表面设计方法设计了数值实验工况,拟合了甲烷转化率X_(CH4)、氢气产率Y_(H2)、氢气回收比R_(H2)、储能效率η等与进口温度T_(in)、进口流量q_(m)、反应侧与渗透侧压差△p、以及渗透侧压力p_(per)的二次回归方程,R^(2)均高于0.97;得到了各因子对响应值的贡献率和交互影响规律;以X_(CH4)、Y_(H2)、R_(H2)、η最大为优化目标,以反应器内最高温度不超过873 K为约束条件,获得最优的参数为T_(in)=673.1 K、q_(m)=0.005 kg·s^(-1)、△p=0.42 MPa、p_(per)=0.02 MPa。
The operating parameters have significant effect on the performance of the methane reforming membrane reactor driven by the trough solar collector,and the present paper optimized the operating parameters by the response surface methodology(RSM).The multi-physics coupled numerical model of the reactor was established,the species transfer and reaction process inside the reactor was analyzed,and the influence of key parameters on the reactor performance was explored.The central composite face-centered design(CCF)method was used to design numerical experiment cases,and the quadratic regression equations of the methane conversion rate X_(CH4),hydrogen yield Y_(H2),hydrogen recovery ratio R_(H2) and the energy storage eficiency n were fitted with the variations of the inlet temperature Tin,the inlet mass fow rate qm,the pressure difference △p between the reaction side and the permeate side,and the pressure in the permeate side P_(per).All R^(2) values were higher than 0.97 in RSM models.The contribution rate and interaction infuence of each factor on the response values were then obtained through the RSM models.Finally,multi-objective optimization was carried out by taking X_(CH4),Y_(H2),R_(H2) and η as optimization objectives,and with the maximum temperature inside the reactor not exceeding 873 K as a constraint,the optimal parameters obtained were T_(in)=673.1 K,q_(m)=0.005 kg·s^(-1),△p=0.42 MPa,P_(per)=0.02 MPa.
作者
王晶钰
王磊
沈雷雷
WANG Jingyu;WANG Lei;SHEN Leilei(College of Energy Engineering,Xi'an University of Science and Technology,Xi'an 710054,China;College of Architecture and Civil Engineering,Xi'an University of Science and Technology,Xi'an 710054,China)
出处
《工程热物理学报》
北大核心
2025年第6期2012-2020,共9页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.52206115)
中国博士后科学基金(No.2023MD744240)
陕西省自然科学基础研究计划(No.2022JQ-401)
陕西省教育厅一般专项科研计划项目(No.21JK0768)。
关键词
甲烷重整
膜反应器
太阳能制氢
响应曲面法
多目标优化
methane steam reforming
membrane reactor
hydrogen production from solar energy
response surface methodology
multi-objective optimization
