A columnar regular-porous stainless steel reaction support with high superficial area for hydrogen production

Tianqing Zheng, Wei Zhou, Xuyang Chu, Yunsong Lian, Xiang Huang, Kwan San Hui, Kwun Nam Hui

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

To improve hydrogen production (HP) performance of regular-porous structure (RPS), a columnar RPS with small specific surface area and high superficial area is developed. A numerical simulation model of regular-porous stainless steel structure (RPSSS) is established. Subsequently, heat transfer performance, pressure loss, temperature, methanol concentration, H2 concentration distributions and HP performance of the columnar RPSSS with small specific surface area and high superficial area and the body-centered cubic RPSSS with high specific surface area and small superficial area are compared. Then, temperature, methanol concentration, H2 concentration distributions and HP performance of axial and longitudinal size-enlarged columnar RPSSSs are studied. The results show that compared to the body-centered cubic RPSSS, the columnar RPSSS has higher methanol conversion, larger H2 flow rate and higher CO selectivity. Especially in the condition of 300 °C wall temperature and 12 mL/h methanol-water mixture injection rate (MWMIR), the methanol conversion, H2 flow rate and CO selectivity of the columnar RPSSS are increased by 12.3%, 9.24% and 30%, respectively, indicating that the superficial area of RPSSS is more important for its HP performance compared to its specific surface area. Compared to the longitudinal size-enlarged columnar RPSSS, the axial size-enlarged columnar RPSSS has higher methanol conversion, larger H2 flow rate and higher CO selectivity. This research work provides a new method for the optimization of hydrogen production reaction support (HPRS).
Original languageEnglish
Pages (from-to)10204-10216
Number of pages13
JournalInternational Journal of Hydrogen Energy
Volume47
Issue number18
Early online date18 Feb 2022
DOIs
Publication statusPublished - 28 Feb 2022

Keywords

  • Hydrogen production
  • Regular-porous structure
  • Specific surface area
  • Superficial area

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