The production of hydrogen through steam reforming of bio-oil model compounds recovering waste heat from blast furnace slag
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A novel strategy that combines steam reforming of bio-oil and recovering waste heat from blast furnace (BF) slag was proposed, and the thermodynamic characterizations of steam reforming of bio-oil model compounds recovering waste heat from BF slag for hydrogen production were investigated. When temperature ranged from 600 to 700 °C, hydrogen yield and its component reached maximum, about 100 mol kg−1 bio-oil model compounds and 70%, respectively. The higher mole ratio of steam to carbon in bio-oil (S/C), the higher hydrogen yield and its component were obtained, but according to the practical process, the most suitable S/C was 4. The ordinary pressure (1 bar) was considered as the optimum pressure for steam reforming of bio-oil model compounds recovering waste heat from BF slag. At lower temperatures (below 500 °C), BF slag could promote hydrogen yield, but it slightly decreased equilibrium yield of hydrogen at the optimal conditions. Besides, BF slag could promote hydrogen component at lower temperatures (below 600 °C), but it had little effect at the optimal conditions. Solid carbon should be reduced during steam reforming of bio-oil compounds recovering waste heat from BF slag.
KeywordsThermodynamics Steam reforming Bio-oil model compounds Hydrogen Waste heat recovery Blast furnace slag
This research was supported by the Major State Research Development Program of China (2017YFB0603603), the National Natural Science Foundation of China (51576035), the National Postdoctoral Program for Innovative Talents (BX201600028), the National Natural Science Foundation of China (51604077), the Fundamental Research Funds for the Central Universities (N150203006) and the Doctoral Scientific Research Foundation of Liaoning Province (201601004).
- 14.World steel association http://www.worldsteel.org/statistics/statisticsarchive/iron-archive.html.