Abstract
With the incorporation of membranes with better permeance and the integration of heat supply to the reactor through its wall, radial gradients in membrane separators or reactors may become important. We review approximations for radial gradients in a membrane reactor or a separator, based on mass transfer coefficients (k c), and show that they are equivalent to more rigorous methods when the Sh=k cR/D H is known (where D H is hydrogen diffusivity). Concentration polarization is important when the ratio of k c to permeance velocity is around unity or smaller. Results are tested against experimental results and 2D simulations of two such cases.
Original language | English |
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Title of host publication | Membrane Reactor Engineering |
Subtitle of host publication | Applications for a Greener Process Industry |
Publisher | wiley |
Pages | 22-36 |
Number of pages | 15 |
ISBN (Electronic) | 9781118906842 |
ISBN (Print) | 9781118906804 |
DOIs | |
State | Published - 8 Aug 2016 |
Externally published | Yes |
Keywords
- Hydrogen production
- Membrane reactors
- Methane steam reforming
- Pd membrane reactor
- Propane dehydrogenation