양방향수전해 기반 수소제조용 초고온스팀 생산시스템의 엑서지 분석

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 29; no. 3; pp. 235 - 242
• Main Authors: 한단비(Danbee Han), 박성룡(Sengryong Park), 조종표(Chongpyo Cho), 백영순(Youngsoon Baek)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2018
• Subjects: 기계공학; 공정 최적화; 초고온스팀; Super-heated steam; H; Hydrogen procduction; 양방향 수전해; 엑서지; Exergy; 수소; Reversible electrolysis; 수소생산; Optimization process
• DOI: 10.7316/KHNES.2018.29.3.235
• ISSN: 1738-7264

Hydrogen can be produced by reforming reaction of natural gas (NG) and biogas, or by water electrolysis. In this study, hydrogen production through water-electrolysis needs superheated steam above $700^{\circ}C$ for high efficiency. The production method of hydrogen like this was recommended for the 4-type processes for superheated steam ($700^{\circ}C$, 3 atm) by Bio-SRF combustion furnace. The 4-type processes to produce superheated steam at $700^{\circ}C$ from the heat source of SRF combustion furnace was simulated using PRO II. The optimum process was selected through exergy analysis. The difference of process 1 and 2 is to the order of depressure and heating process to change $180^{\circ}C$ and 7 atm to $700^{\circ}C$ and 3 atm. Process 3 and 4 is to utilize 25% of steam to generate superheated steam and remaining to use for the power generation by steam generator.