Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
권호 표지
DOI QR코드

DOI QR Code

A Design for Natural Gas Reforming Reactor

천연가스 개질기 설계

  • Received : 2012.10.10
  • Accepted : 2012.10.26
  • Published : 2012.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

This work is for the design study of natural gas reformer (40 $m^3/hr$ over). We used experimental kinetic data from literature. After that, we set up theoretical model based on experimental reaction kinetic data. The shape of reactor is 1.7 m long and 200 mm dia. with cylinder geometry. Volume of reactor is 53.4 liter. Average flow velocity of gases in the reactor has been determined 0.272 m/sec and residence time is 9.26 sec. Reaction temperature is $850^{\circ}C$, with pressure 9.3 Bar. Used natural gas volume is about 9.21 $m^3/hr$. Produced hydrogen is 43.7 $m^3/hr$ with no change of pressure. Unreacted natural gas is 0.09 $m^3/hr$ and the amount of steam is 26.9 $m^3/hr$. Steam to $CH_4$ (s/c ratio) is 2.91. Reforming reaction take place from the reactor entrance to 120 cm region of cylinder type reactor. After the entrance of reacting gases to 120 cm region, the reaction reaches equilibrium which is close to products. This study can be applicable to design various reactors. Output data is in good agreements with the data in literatures1).

Keywords

References

  1. S. H. Chan, D. L. Hoang, and O. L. Ding, "Transient performance of an autothermal reformer", Int. Journal of Heat and Mass Transfer 48, 2005, p. 4205. https://doi.org/10.1016/j.ijheatmasstransfer.2005.02.042
  2. Korean Institute of chemical engineers, reformer system and monitoring technology, 2006, pp. 4229- 4284
  3. Korean Institute of chemical engineers, reformer for hydrogen production, 2008, p. 1229.
  4. Gas Journal, Lee sanggon, "fire safety for semiconductor gases", korean fire protection symposium and seminar, 1994, pp. 37-51.
  5. D. L. Hoang, S. H. Chan, and O. L. Ding, "kinetic and modelling study of methane steam reforming over sulfide nickel catalyst on a gamma alumina support", Chemical Engineering Journal 112, 2005, pp. 1-11. https://doi.org/10.1016/j.cej.2005.06.004
  6. S. H. Chan, D. L. Hoang, and O. L. Ding, "Transient performance of an autothermal reformer", Int. Journal of Heat and Mass Transfer 48, 2005, p. 4205. https://doi.org/10.1016/j.ijheatmasstransfer.2005.02.042
  7. Ascher, Uri M.; Petzold, Linda R. 1998, Computer Methods for Ordinary Differential Equations and Differential-Algebraic Equations, Philadelphia: Society for Industrial and Applied Mathematics, ISBN 978-0-89871-412-8.
  8. http://www.wisegeek.com/what-is-space-velocity.htm. Written by C.H. Seman (adopted with some minor modifications). http://www.wisegeek.com/what-is-space-velocity. htm. Retrieved 2011-01-09.