Abstract
The aim of this work is to study the performance of nanoporous carbon membrane for hydrogen recovery from off-gas streams. The study is based on a rigorous mathematical model which can predict the performance of nanoporous selective surface flow (SSF) carbon membrane. Basically, the developed model is based on two transport mechanisms: the dusty gas flow through porous media and the surface adsorption-diffusion. The model was employed to simulate the hydrogen recovery from off-gas stream using SSF carbon membrane at different operating conditions. The separation performance of hydrogen-hydrocarbon mixture by nanoporous carbon membrane was evaluated and described. A comparison between the model simulation and the experimental data related to hydrogen recovery from off-gas streams shows good agreement. A parametric study is further carried out to show the effects of pressure at the membrane feed and permeate sides. The effects of flow-rate and type of sweep gas at the membrane permeate side on hydrogen recovery are also shown. SSF membrane illustrates a significant potential to be used for hydrogen recovery from refinery off-gas streams.
| Original language | English |
|---|---|
| Pages (from-to) | 43-51 |
| Number of pages | 9 |
| Journal | Journal of the Chemical Society of Pakistan |
| Volume | 40 |
| Issue number | 1 |
| Publication status | Published - 2018 Jan 1 |
Subject classification (UKÄ)
- Other Chemical Engineering
Free keywords
- Dusty gas model
- Hydrogen gas transport
- Hydrogen production
- Hydrogen-hydrocarbon separation
- Membranes
- Selective surface flow
