蒸汽重整
制氢
甲烷转化炉
甲醇
氢
水溶液
废物管理
生产(经济)
化学
化学工程
材料科学
热力学
环境科学
工艺工程
经济
工程类
有机化学
物理
宏观经济学
作者
Changsong Hu,Chao Xu,Xiaojun Xi,Yao He,Tiejun Wang
出处
期刊:Energies
[Multidisciplinary Digital Publishing Institute]
日期:2024-12-28
卷期号:18 (1): 81-81
摘要
Methanol, which can be derived from sustainable energy sources such as biomass, solar power, and wind power, is widely considered an ideal hydrogen carrier for distributed and mobile hydrogen production. In this study, a comprehensive comparison of the thermodynamic and techno-economic performance of the aqueous phase reforming (APR) and steam reforming (SR) of methanol was conducted using Aspen Plus and CAPCOST software to evaluate the commercial feasibility of the APR process. Thermodynamic analysis, based on the Gibbs free energy minimization method, reveals that while APR and SR have similar energy demands, APR achieves higher energy efficiency by avoiding losses from evaporation and compression. APR typically operates at higher pressures and lower temperatures compared to SR, suppressing CO formation and increasing hydrogen fraction but reducing methanol single-pass conversion. A techno-economic comparison of APR and SR for a distributed hydrogen production system with a 50 kg/h hydrogen output shows that although APR requires higher fixed operating costs and annual capital charges, it benefits from lower variable operating costs. The minimum hydrogen selling price for APR was calculated to be 7.07 USD/kg, compared to 7.20 USD/kg for SR. These results suggest that APR is a more economically viable alternative to SR for hydrogen production.
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